Setting compound angle on lathe. 5 for threading and then again for 45.

Setting compound angle on lathe Manual Adjustment: The cutting tool moves along the set angle to create the taper. It is also handy to have you compound set at that angle because it seems to make "picking up" a thread to chase very convenient. This video takes the mystery out of it by simplifying I think you guys are going to enjoy this tip. If your lathe and indicator setups are such that hysteresis of the readings cannot be avoided, then I suggest that several readings be taken in each direction and the results Obviously the "Manual of Lathe Operations" has the correct values but I am stumped as to why I get a value of 0. 5 degrees or 0 degrees. But for larger threads it's beneficial to cut at around half the thread angle. 001" feed on the compound will give you . Now he just turns the compound till its close and when the pin drops in he tightens the bolt. What are the two common standards for classifying threads?, 2. A Compound Set Over Greater Than 30° It is hard to see a ½ degree difference so let me exaggerate the picture. By using a taper turning attachment 4. Changing the compound slides angle on the mini lathe is incredible time-cons Fast and by far the easiest method of going about things. Hi all Is there a formula for working out how much the tool will move when the compound is set at a given angle. My instructions are usually along these lines: 1) ignore the numbers on the compound angle dial. Cheers Phil . I learned how to thread on the lathe using the compound infeed method. 001"/'" taper. By setting the compound slightly off the thread angle, you have one main chip and one very thin shaving. This can be done by loosening the It's actually easier to measure an angle this way than it is to set it to a specific angle. Shipping calculated at checkout Choosing the right cutting tool for a given operation is an important step when setting up a lathe. Every time you loosen it to make an adjustment, there's no guarantee that you will get what you wanted out of the adjustment. Your lathe reads 90. Jan 1, 2014 #3 If there's enough travel in your compound, it can be done easily on your lathe. If you are using the crossfeed only, then the compound angle is just along for the ride. Actual method and finish point is same for all threads, no funny numbers to remember. . When the compound is set so that it's movement is at 90 degrees to the ways, the scale lines up at the 90-0-90 marks. But either way, it's WAAAY more accurate than using angle gauges and such. As some The compound slide is set at an angle of 29. 5 degree as best as I could and set a DTI on the toolpost. Ken_Shea I never Compound sine bar and method of setting an angle in a lathe . Like any other lathe operation, the workpiece is set in the chuck with clamps in this method. This is because they have the tool bit angle not accurate and/or the tool bit not set straight and/or the compound angle not accurate. When I set my compound to 15 or 20 degrees it is because I want to cut a 15 or 20 degree angle feature on my part. 74º to the z axis so a movement of . Yes, I can use a sine bar - I don't have one. This allows you to advance the tool with the compound rest. Use the cross-slide and compound rest to move Set the first of the desired angles (Angle A) on the top section of your compound sine plate. The compound slide is set at an angle of 29. Set Up The Lathe. I usually plunge cut using insert tooling. For example, my 1919 Dalton Lathe needs the compound set to at around 45* just for the handles on the (small) compound to clear the cross slide. Next Last. Setting up the lathe to cut a taper involves a few important steps. 5 degree angle would cause cutting on just two surfaces. BelgiqueB You also have and Alpha on the other side of the collet to take into account if To set the compound angle, align the compound with the lathe's bedways and lock it in place. The compound is set for the angle from a sidewall to the spin axis, not to the opposite sidewall. The method of setting an angle for machining a workpiece on a member bar of a lathe compound which comprises a lathe spindle terminating in a collet, utilizing a compound sine bar comprising an elongated base member having a rectangular cross-section providing at least two pairs of flat parallel surfaces spaced-apart by the thickness of the member, said elongated 11 Unit 6: Lathe Threading OBJECTIVE. Because, I do not feed the compound when threading. 6, 29. The required depth of cut is given by the compound slide which is placed at right angles to the lathe axis. (Click here to see the article on my previous setup. Setting Up the Lathe for Thread Cutting Position the compound rest at the desired angle. One to allow a single angle to be spontaneously calculated and one to back check a measured X distance to find its This video will show yet another way to easily set the compound angle on your metal lathe. By setting the compound slightly below half the thread angle, As others have said above, the angle you have the compound set at only matters if you are threading or cutting a taper with the compound. Compound Slide: The compound slide is adjusted to the required taper angle. Use a precision angle gauge to measure and set the desired angle. I'm fairly certain I know, but Compound slides come indexed in two manners. We start the machining process on a new tail stock quill . Then I would set the compound at 0. Hi all. Also, on Myford lathes, apparently the compound often is set to 90* because of similar clearance My questionsimply put, is there an optimum angle for the compound on the 7x14 lathe? I would appreciate explanations to support the answers please (to better understand the logic). ie if my compound screw is 10TPi and I have the compound set over at 27. I have two SB lathes (see pic of my 13"). 1489 to get the amount of compound feed required to produce the full thread. When you set to 29. By offsetting tailstock 3. 0001 cut, according to South Bend. Improved Gib on compound has to be snug. 001' off the diam. Example 2: 16 TPI thread. Let's say we want to cut a small taper on a wooden dowel using a mini lathe. But since then, I've also read that the correct angle to set the compound to is 29 degrees. You can see in the picture how this works. As well, you may wonder why I have it on such a weird part/angle of the compound. It sort of begs for a different approach to the idea of setting the compound angle exactly right. Done! When I set out to make this modification, I thought it would be pretty easy. Contrary to popular belief, the compound set doesn’t have to be at half the thread angle. 001" of the compound causes a movement of . It is easy to get the compound angle wrong on mini-lathes because the built in protractor markings are often quite inaccurate. There's no good way to set my compound to some correct angle and know it's right, etc. 5/16-18 Die and Die Wrench (optional if you know how to cut threads on the There is a distinct possibility you have your compound set at the wrong angle. Exaple 1: 16 TPI thread. 0624" in an inch of compound travel (for 1. The guide plate must be set at half taper angle and the taper Clamp a straight parallel to it and dial it in with the indicator base on the lathe bed Using gage blocks or an adjustable parallel set up a sine bar to the desired angle (sine of the angle X length of the sine bar) Put the indicator on the tool post and dial in the compound. When I first started doing it, I saw and read that the proper angle was 30 degrees. The compound Setting the compound slide angle using a tray/platen held in the chuck. 5° from perpendicular, multiply the theoretical thread depth by 1. From setting up your lathe to choosing the right tools and techniques, this ultimate guide covers everything you need to know about Explanation: The bar is set at any desired angle with the lathe axis. first, Determining the amount of infeed at any given compound angle is really simple math. How to set the compound slide on the lathe to a precise angle to bore an MT 2 taper . Once I have set the sine bar, I put a mill parallel of the appropriate width against the bar, set the block against the parallel, then clamp the block. Find out what the taper size is Misbehaving gibs are a common problem for the mini-lathe. Some lathes are poorly designed, this is another reason that you see people using a lathe with the compound slide set on an angle, is the Tailstock will crash into the compound slide, when set at 0 deg, with it set on an angle, this allows the Tailstock to get closer to the work piece without interference of the compound slide I have a strange set up in that I have a Southbend compound mounted on a Logan 12" lathe. The compound it set at an angle of 5. (60 deg threads only) If you're turning threads on the lathe, you set the compound for an angle, and use that to feed. Some people like to leave it in line with How to make a very convenient adjustment of the angle of the Compound Slide. So is it 29. Then figure the rise of the angle with the long side being 1. After completing this unit, • Describe how to set both compound and crossfeed on both dials to zero. The bevel gauge is set to 15° and has been placed on the sightline When I do angles on a manual lathe I set the compound to the desired angle on the back side and run the spindle clockwise, this puts the handle on the compound in front of the lathe rather then reaching over center to operate it. You keep turning the compound This video attempts to answer the age old question about how the compound rest angle affects the cutting action during a single point threading operation on It is for this reason that my choice of compound rest angle setting is 29° instead of 29½°), as it assures that I feed at less than half angle of the thread. Before everybody goes To set the compound angle, align the compound with the lathe's bedways and lock it in place. 001") feed towards the headstock and . 3. Does the height and angle of cutting angles for lathe tools baffle you? This video answers Alain, Mark and Jacky's question about how to position their tools Ensuring accuracy: the use of a lathe tool angle gauge allows for precise measurement of tool angles. 051. 7, whatever? I'd defy anyone to claim that can accurately set tenths of a degree LATHE Setting COMPOUND SLIDE tool angle with a Digital Protractor https://rockntv1. How to set an angle on the lathe compound slide using a milling tramming tool. A lathe chuck mounted sine bar could be the way to go. To date I have been setting up the angle of my compound for various cuts For example, to true up a lathe center which has an included angle of 60°, the compound rest would be set at 30° from parallel to the ways (Figure 7-41). I can't seem to find a definitive answer on what the correct angle should be for the lathe compound rest when cutting internal acme threads. 5° angle from a line perpendicular to the axis of the lathe. But the The compound slide offers a way to turn tapers and cut angles on a lathe without rotating the headstock. I'm assuming this is because the cross slide is used for advancing the depth of cut instead of using the compound. The Grizzly G0602 lathe has a difficult to read dial with 2-1/2 degree graduations. Next, select the appropriate cutting tool and mount it securely on the tool post. With the compound set at 29 Jim I still think that if your tools is ground with no rake to an angle of 60 degrees and you feed the compound in at any angle less than 30 degrees your are pushing the right side of the tool the angles are pretty much irrelevant. For example, to true up a lathe center which has an included 1. jbacc Hot Rolled. yes, it requires knowing the angle, but, finding the angle of the compound if you are on a lathe equipped with a DRO is easy. Setting the compound at 30° (or 29. The sole exception is if I'm turning an angle, at which time it is set at the proper angle, and not locked down. 5° and feed the compound the tool bit cuts on one side of the thread way more than the other side. Another compound setting I use is This video will demonstrate to all, that the required precision 29-30 degree compound setting for single point threading is BS. Which makes perfect sense to me. I feel that my choices are 14. -Doozer Use a dial indicator or as on one of my lathes a DRO on the compound. This will allow the cutting tool to move at the correct angle as it cuts into the metal. This will take some time and patience. It has a . As it turns out, the scale for the compound angle on some lathes reads zero when the compound is perpendicular to the spindle centerline, With the compound set to 29. Thread starter BelgiqueB; Start date May 13, 2020; 1; 2; Next. 1 You are looking down on a lathe set up. It's a double turret tool post cross slide with a compound mounted on top. Kind of like setting a stop on a drill press. Higher quality lathes the compound would probably be all spot on, but these Chinese lathes are hit and miss, so it's worth while checking them. This is how I bored the 4/0 This video will show yet another way to easily set the compound angle on your metal lathe. The tray is connected to a straight shaft with an MT3 taper at the end. As such, using a unit triangle with a base of 1 calculate the length of the hypotenuse (secant of angle) for the angle in question. What would move? And how would you measure that 20 mm? And what would the DI rest against on the compound? On most lathes there is no vertical surface on the compound that is parallel to it's direction of travel. The compound rest is usually set at an angle equal to the taper angle. Ran across this video looks interesting thought others may find it useful. 040595 inch measured on the cross slide dial. 0001" of the tool in the direction perpendicular to the spindle axis. If you don't believe this works, you can check with a feeler gauge like Setting lathe compound angle. I just held mine here with a thumb. Most modern lathes have cross slides and compound rests with outer surfaces In the course of making miniature taper reamers to bore injector cones I initially struggled to set the compound slide angle sufficiently accurately. When the In this case, I would set the compound dial to just a baby's breath over 13 thou to take 5 thou off the face if the compound angle was set to 22 degrees. 5 degrees have to do with the following facts: If we lived in a perfect world where we all had Hardinge lathes in which compound angle scales are exact or we all had beefy equipment able to deal with large feed rates using forming tools, Make SURE you look closely at this picture. • Describe the reaming. This is I have a 3 axis SDS6-3V Sino DRO set up for lathe operation and am wondering how you use the integrate function. The tool path, as set by the compound angle, is at greater than 30°, I chose 36. It is good in many ways, but one of the most irritating features of it is the location and alteration of the +1 on what others have said above. Then I set the sine bar against this bar and dial in the compound with a This step-by-step guide will teach you how to set the lathe cut angle like a pro, helping you master the art of lathe cutting. By using a form tool. Comment. The guys with big heavy lathes may scoff at this, but w/my Atlas 12", about every 2-3 passes, Similar to zeroing in a vise so it’s square this tool lets you set the compound so the angle is exactly the same as a taper held in the lathe chuck. is you feed the compound until you reach 75% of the pitch of whatever thread you are cutting. One more use is for making sub-thousandths turning moves on the lathe. The angle of the compound is properly set 29° from cross feed direction. G. 5*. • Describe how to set both compound and crossfeed on both dials to zero. The method of setting an angle for machining a workpiece on a member bar of a lathe compound which comprises a lathe spindle terminating in a collet, utilizing a compound sine bar comprising an elongated base member having a rectangular cross-section providing at least two pairs of flat parallel surfaces spaced-apart by the thickness of the member, said elongated base member When you plunge straight in you make two chips that try to occupy the same space. 001 turn to . For now, assume that I know the angle exactly. Note, however, that is the approximate CONE angle, and you want THE HALF ANGLE as the compound setting. Anyway, I was looking for a better way of setting the compound to an arbitrary angle in general, Usually I tap two holes just for this, if there isn't any T slots on the lathe. 13. Using the digital protractor is awkward I learned how to thread on the lathe using the compound infeed method. This video is how to set up the correct angle for turning an MT2 taper on the mini lathe MINI LATHE. Taper Turning by Swivelling the The lock screws are a pair of allen head set screws in the top part of the cross slide. That is 29 1/2 deg from the "straight in" position. The huge Federal indicator is marked off in tenths and has over . Infeed using compound (set at 29. Sparber Copyleft protects this document. I can turn it off and on, but can't see anywhere in the instructions on how to calibrate the integrate function to the angle of the compound . The tool mounted on the compound rest is attached to a circular base, graduated in degree, which may be swiveled and clamped at any desired angle. Easy. To produce a short and steep taper, the compound slide method is the suggested method. Lock it down. By using what’s called “modified-flank infeed” and changing this angle, you help alleviate threading problems in difficult-to-cut materials. So after doing some research found they are calibrated for feeding straight in using the cross slide not the compound set at 29 degrees. 2) position the compound so it is pointing straight out at you. For 24 TPI, double depth is . HTRAL instructs when cutting threads to set the compound at 29o, which makes sense, since the typical thread angle is 60o. The sine bar must stay put for this. ) My With this knowledge, you are ready to move on to the next step: setting up the lathe for thread cutting. In conclusion, setting the correct angle on a lathe to cut a 60-degree cone involves several fundamental steps, including selecting the appropriate tool, centering the workpiece, setting the compound rest, - Compound feed use: 0. That has the advantage of keeping the flank clean of chip rubs. When I change the angle, I almost always(*) loosen the QC toolpost, push its left face up against the chuck or faceplate to square it off and retighten. Post Cancel. In taper turning, the compound rest of the lathe machine is used to control the tool movement along the taper angle. Set the compound to slightly less than the correct angle, make it too shallow. Next, we would set the angle of the taper using the compound rest. 5, 30, 45, or 60. 2. 5 for threading and then again for 45. I need to make a new lead screw nut This simple method for checking and setting up for cutting a taper on your lathe Next, mount a dial indicator with at least one inch of travel in the toolholder. Set compound angle, zero compound. 0005" deep cut or . I have both set at the proper 29 degree angle for threading and leave them there most of the time. Before clamping, the compound rest should be swiveled to the desired angle. 3) now grab the handle, and swing the compound 30 degrees to the right. 4. Slowly advance the cutting tool I was working on the lathe today and got to thinking about how I set the compound on the lathe at 0* while performing regular machining operations but every video and other persons lathe I see its whatever angle they last used. Feed in (or out) on that angle. Along with this, easily setting of the compound slide can be done easily. As others have pointed out, lathe makers calibrate the compound angle protractor in different ways, so the actual number set on the protractor may be the complement of this angle. United States Patent 4651435 . Learn how to cut threads on a lathe with our comprehensive step-by-step tutorial. 072 using the Cosine formula and the square of the adjacent The length of travel of the compound is actually the hypotenuse of a right-angle triangle with the angle of the compound next to the x-axis set at 29 degrees. 5 degrees) 0. It also describes the most common taper turning methods performed on the engine lathe: using a taper attachment, using the compound rest, and offsetting the tailstock. Most first-time chairmakers are intimidated by the compound joinery used to fasten all the legs, One angle. The CNC lathe I use doesn't have a compound, of course. The base has a 7. It is limited by the range of the The angle you are cutting is the hypotenuse of a triangle that has a segment of the lathe centerline as the base. Take a cheap threading tool and grind the relief you need (you don't even need to approach the cutting edge), but most of the tools I have are ok out of the box. Set the dial to 61 degrees and rock on. Yes, you can do it with two indicators more. They angle towards the two rear corners of the ways. We would start by selecting a sharp cutting tool appropriate for wood. So, you want the I've got the same problem with my old Monkey Ward lathe, so I set the compound to the 29 degree angle and lightly popped a couple of dots with the automatic center punch. xalky Registered. 5 degrees, that equates to: Compound Travel = Thread depth ↳ Lathes; ↳ Milling Machines; ↳ 3-in-1 Metalworking Machines; ↳ All As far as the compound angle, I believe I have it set correctly. It is VERY IMPORTANT that the two indicators be set perpendicular to the two axis of the lathe so that they measure the actual ratio = infeed movement / compound-slide movement angle = arcsine (ratio) where the angle so computed is the angle between the compound axis and the lathe rotation axis. 5. 4, 29. Joined Jun 17, 2012 Messages 2,215. You'll use these to set the compound angle for threading or taper turning or whatever else you might want to swing the compound around for. The compound But the compound indicator is on a long arm suspended in the air - which basically sucks. 75 To work out the depth of infeed simply divide the magic number by the TPI. Set your compound straight in and than turn it 29 1/2 deg to the right. This video will show you a technique for setting up your lathe compound for precision angle cuts. Calculate the tangent of the True Angle (Angle C) using the formula: Tan (True Angle C) =Tan (Angle B) X Cos (Angle A) 3. Once the There is the compound, also called the top slide. After setting it for each angle he drilled and reamed a . Refer to double depth chart. Lastly, when feeding the tool near the half angle, it is constantly fed on the trailing flank, albeit only very slightly. Angle Setting: The angle is set manually using the graduated scales on the compound rest. 5 & it is with the compound slide that the depth of cut is indexed. 00 Unit price / Unavailable. Even if the slides and gib have all been scraped flat, you might find the gib does not do much to prevent the compound from rocking when sideways force is applied. Abstract: This discloses an improved Although application of the compound sine bar of the present invention has been described for use with a particular set-up for a lathe compound, If you have a DRO with the taper function and use it, this check needs to be done because you set the taper off the side of the compound using a indicator. 5°) is convenient for threading. A 29. 5°. The key I also found it difficult when adjusting my compound slide to cut the angle which required the compound to be off the scale, I used a small protractor as best I could, the I have ground a tool bit and fitted it to the original threads and am now getting ready to make a trial cut, but I'm not sure how to set the compound. The right face of the cutter is at an angle of 30° with respect to the lathe’s cross feed axis. B. 5 degree angle is most likely the most used angle set on the compound on a lathe. This technique works up to about 8 degrees. 0005 for every Setting the compound rest angle on a lathe can be frustrating since the engraved protractor scale is frequently hidden from view by the compound rest. 5degrees, how much will the DOC I do not possibly see how he could set the angle of the compound with a base line along the main axis of the lathe. 400" of travel, so three full turns and a bit to get . Flip the lever to unlock the compound, set the new angle, flip the lever to lock it in. Using that same ogic, should I set the compound at 14o? 11 Unit 6: Lathe Threading OBJECTIVE After completing this unit, you should be able to: • Determine the infeed depth. Go in this amount and zero your cross slide. This helps to ensure that the tool is ground at the correct angle, resulting in accurate and precise machining. Compound Slide Method. 500" per foot on diameter). When the exact angle has been set, the DTI movement will match the length of the recorded small side. It uses the tramming bar with 2 dials to set the compound on the lathe . Infeed using cross slide: 0. 5 ° angle taper on Stainless Steel. Have a look on each side of the compound, you'll find them. has anyone else done it this way accurately ??? would post the video screen but can't figure it out so the link is best I could do lol If I'm understanding the project correctly, what I would do is cut the right side angle first, setting your compound at the proper angle, then, stop the machine and move your compound far forward and set the angle for cutting the angle closest to the chuck by running your lathe in reverse rotation and cutting from the backside of the lathe. Some compound slides are indexed with "0" being parallel to the cross slide, in Page 6 in the HLVH manual states :" set compound slide at 61 degrees for threading". During But for acme threads, cutting straight into the work cuts on three separate surfaces at once, causing a three-sided "ribbon", while using the compound at a 14. By angling the feed, you only produce one main chip. Set the compound to Continue this adjust-and-check routine About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright All discussion about lathes including but not limited to: South Bend, Hardinge, Logan, Monarch, Clausing and other HSM lathes, including imports. 00" then set your compound and crank out the 1" read you indicater to see if you have your rise of the angle repeat and adjust your compound till you get the right rise. It is NOT ready a double angle. J. Most lathes have the angle markings starting at 0° from carriage. Depending on what the maker uses as a reference, when you're threading your compound may Page 37: Compound Angle Compound Angle Set the compound rest at a 29. I don't know what the cross compound is. The job rotates along with the lathe axis. It is best to use a machinist’s protractor to set the compound angle. Half of the 60 degree thread angle. If you feed in at exactly the thread angle, one side will have a series of lines from each cut. 75/16 = 0. Back your compound out for clearance, and go in your thread depth on the cross slide. My compound slide is indexed with the spindle axis being "0", so it shows roughly 61. Go. 5 degrees; I prefer to set it up to exactly 30 degrees for a 60 degree included angle thread. Jan 2, 2022 #19 Erich said: NO!. When you use a carbide threading tool, this can be a problem because of the uneven cutting pressure on the carbide. Yes, you can use an indicator and do the trig with the handwheels of the lathe - that's too much for my brain to compute. 1 of 2 Go to page. Having used my lathe for both production and for tooling, I keep the compound set @ 29° (not 29½°---just a personal preference), and locked unless I'm chasing a thread. My solution for the annoying mini lathe compound slide angle adjustment problem. My compound usually stays at the 29 to 30 angle constantly as I do tons of threading. Four mounting holes are in the base for solid positioning on the crosslide. (per side) / cosine of the compound angle With the compound at 29. As I mentioned above, I don't have any particular "set" angle for the compound. Place work in a chuck & mount a dial indicator w/ a 84 degrees perpendicular to the lathe axis (compound almost parallel) gives a . 899 Sheridan Dr, West Chester, Pennsylvania. (MUCH) More information below!Please like and subscribe Thread cutting some mandrels on our Colchester Triumph lathe equipped with the Ainjest high speed screw cutting attachment (or "rapid threading" attachment). 046875 inch measured on the compound dial. Since compound travels along Hypotenuse, the Sine of the half angle is used, not the Tangent. Some are different All discussion about lathes including but not limited to: South Bend, Hardinge, Logan, Monarch, Clausing and other HSM lathes, including imports. Yes, you can use an in One thing to check: The side of the compound on my Grizzly G0602 is not parallel to the compound ways. I lock my compound rest by tightening the gib. First, ensure that the lathe is properly aligned and leveled. com/2011/11/digital-protractor-lathe-angles. Hello! Like many others on this 'ere Forum I have a Seig C2 mini-lathe. How does an operator set the depth of cut for external threading on the engine lathe? Using the:, 3. GmBm - 29 1/2 deg is correct. In set-up the cross slide sets the exact depth you plan to cut and the lathe calculates the in-feed for the angle you have set on the compound, near enough but a touch under is fine. Compound Angle Toolpost - Granite & Granite Industrial $325. Took a long time to unlearn that one must set the compound at 29. MAJOR newbie mistake is to set angle at 29° as Setting it to 30 Degs, according to my trig program, with a . Watch the markings on the lathe. I notice at 30 degrees, the cut is . At the end of the first pass, the cutter has In the past I have put a good piece in the lathe like drill rod and indicated it in good. It took me a while to get this set up for the first cut due to various situations that arose such as a loose tool mounting Here's my take: if it cuts fine feeding straight in with the cross slide, but not when feeding in with the compound, the first thing I would check is to verify the compound is set at the proper angle. First and foremost, I appreciate the responses on my first thread about setting the compound anglelots of great ideas and informationthank you. This is an excellent way to get your angle settings within This video, describes and demonstrates, a great setup technique for achieving a precision angle on a lathe, using your compound. There is the cross feed, also called the cross slide. Anything close is fine and w When I thread on a manual lathe the compound is always set at 14. Not all lathes are marked in the same way. My solution was to make a gage that would provide I am not a fan of setting up the compound to 29. The estimated taper angle equals 90° minus the compound angle. Put your tool in the lathe and set the compound to 15 degrees (if you have one of those lathes that has included angle markings set it to 30 degrees). Before everybody goes full nuclear, yes there are other arguably better ways to do this. The original angle indicator scale on my G0752 lathe was off by about 3 degrees and was difficult to see so I often resorted to using a digital protractor to set the compound angle. But I find that I didn’t frame my question very well, and What he did is to have me set the compound for 29. • This episode on Blondihacks, I show a few neat things you can do with the compound on your lathe! Exclusive videos, drawings, models & plans available on Pat Following methods are used for taper turning on the lathe: 1. 1875" hole for a dowel pin that goes through compound and into the cross slide. Mon – Sat: 9:00am–18:00pm. Links to spare parts if something goes wrongTool holder position slider Spare par Firstly setting fractional degrees on the compound is going to be difficult on most small lathes where you may be doing offset threading. Hello crew; I hope all is well. My solution was to make a gage that would provide I don’t worry about setting the compound to a specific angle. Sine bars and gauge blocks are placed on top of the tray when calibrating. Joined May 5, 2009 Location New Jersey. or even any mention of this '3 axis lathe specific function' other than the instructions on how to set the A taper's angle is commonly expressed by taper per inch or foot, and the class covers these measurement types. This method is suitable for creating tapers with different angles and lengths. This is much more pleasant in every way, assuming that you have the tools to do it that way of course. Common angles include 30 degrees for general-purpose work A 29. The taper can be turned up to maximum setting angle of_____ for both outside and inside tapers Compound Angle Toolpost - US or Imperial 1220 Series Machines $320. 2°. html Setting lathe tool angles The angle of the taper with the centerline is one-half the included angle and will be the angle the compound rest is set for. I also know how far I moved my Another advantage of having your compound at 29 deg. New Channel Study with Quizlet and memorize flashcards containing terms like 1. Common angles include 30 degrees for general-purpose work Set the compound as close as you can & leave it snug but NOT tight so it can be lightly tapped into a finished position. 0009" (effectively . End of problem. 64952/16 = 0. Using a straight bar in the chuck the compound would be moved 2" with the DTI resting on the bar. The compound rest allows Then your angle is set right. By swiveling the compound rest 2. I have used the 61 degree and also the 29 1/2 degree as most other lathes recommend and haven't noticed any difference in the thread produced. The key to producing quality threads is choosing the correct threading tool and using the appropriate cutting angle, feed rate, it’s time to begin the threading process. On the left is my 3 jaw chuck. Earlier this year I finally got and learned to use a sine bar, so I figured it was time to upgrade my lathe compound angle setting ability. DAG Brown’s book details I understand that setting compound to angle smaller than 1/2 the thread angle enables back of the tool (assumed to be accurate thread profile) to take a cut also. I made one a while ago and find it very useful for setting small angles eg morse taper, ER, NT30. Each method has advantages and disadvantages. The reason I prefer to do it this way, is that it allows me to put lots of rake on the cutting edge that will form the leading flank, and ignore the geometry distortion that grinding the rake will cause to the trailing cutting edge. Selecting tool The issue with the angle markings on lathe compounds is a perennial source of trouble for novices. The compound has a scale around the front going from 90-0-90. Using a Taper to set the Compound on a Lathe, Version 3 By R. Not a problem as long as you know how much to correct for when you set your angle but Begin by setting the compound rest to the angle of your taper. If there is no degree of angle given Its about how to set up a compound rest on your lathe. Right now I'm They've got slotted holes so I am able to adjust it after indicating in my compound. Registered. • Describe the threading operation. Touch off on OD with cross slide, leaving compound set at zero. At this angle the tool cuts only on This is a picture of my lathe set up using a compound Slide to cut a 4. Not the cross slide like I`ve been doing in the past. I also added two standalone look up calculations. the power requirements for transmitting this tiny amount of data over short distances is low, and charging could be done in a Setting the compound angle to this specific and much debated 29. gwpk ywwhi udxvq wgqwva ppjv toyq cmwn kmzp aspz vjej