Lathe cross slide backlash adjustment. The manual gives no instructions on how one would do so.

Lathe cross slide backlash adjustment. Retighten outside screws. Sherline has done a good job with the adjustment star wheels on the threads, but where I had problems has always been where the ends attach to the hand Oct 7, 2012 · One problem is that the cross slide has a LOT of slop in it. Removing the Lathe from the Box After removing the bubble pack that fills excess spaces, turn the lathe tailstock Apr 16, 2016 · I went ahead and ordered a new cross slide screw and nut from Miller Fabrication. Exploded view is not much help. As for adjusting the nut, I like the way it is done on the Bridgeport table feed. But be aware that there has to be some backlash or you will not be able to move the cross-slide at all. At this point you tighten the slightly loose lead screw nut. I want to be able to single point thread various things so have been learning that. Figure 26 - Half nut gib adjustment 14. Step 1: Clean the Lathe Jan 26, 2019 · Backlash in the cross slide screw is normal. Feb 8, 2024 · The mini lathe's cross slide nut is designed to be tilted to reduce backlash so it has three adjusting screws. I've removed the oil screw on the cross slide and made a spanner wrench to remove the bolt holding the handle on. . Nov 4, 2022 · From the exploded view you might be able to interpolate an adjustment (if there is one) without disassembly. My machine had about 0. How to check backlash. Locate the backlash by moving the carriage or cross slide to one extreme position and then measuring the movement required for the carriage or cross slide to reverse direction. Now turn the cross-slide handle until the cross-slide disengages from the leadscrew, then slide it by hand the rest of the way off of the dovetails. Thanks for watching shop life. Mar 15, 2017 · Reduce cross slide backlash by making a new nut. Alternatively, google "moglice leadscrew nut" for another alternative (diy epoxy lead screw nut insert to give you a zero backlash solution). The articles cover both compound and cross slide dials, And will work on the 405 and 415. It is sloppiness that exceeds our level of psychological tolerance, which is in the tenths. I’ll be turning the hand wheel in when the resistance suddenly increases. There are two sources of backlash in either the compound or cross slide feed screws. May 17, 2013 · The cross slide has that play or backlash,so it can be move by hand . In advance of receiving that later this week I decided to remove the existing one. it will also work on the workshop lathe as well. Sort of a jack screw setup. The lower one is the power feed shaft - used to drive the surfacing and sliding feeds. Most lathes I have used had about . 010(record reading) U-. Page 9 PM-1236 SPECIFICATIONS Including stand: Width 61-1/2 in. So, after initial commissioning, your machine requires a quick check to ensure all movements are functioning correctly. Page 22 ADJUSTMENT — GIB SCREWS ADJUSTMENT — CROSS-SLIDE BACKLASH When alternating between clockwise and counter clockwise rotation, the cross-slide handwheel may move freely a few de- grees but the cross-slide table stays put. The center one acts as a pivot point and the outer ones rotate the nut around the pivot. 4mm) when I saw the free play in the leadscrew in the saddle. Mar 24, 2014 · Understanding backlash is one of the first things a machinist must understand in order to achieve accurate results. So far I've adjsuted the gib on the compound and on the cross-slide, and it behaves better. The cross slide does have an adjustment for backlash. 92695A307 1/4" Nov 15, 2017 · Adjusting the backlash and the gib on the Sherline lathe saddleGetting rid of the mechanical backlash in the handwheel assembly - 11:37Adjusting the anti-bac Jul 6, 2022 · In this video I tackle the excessive back lash the cross slide has. 020" to . Feb 20, 2018 · My frustration is with the backlash in my cross slide. Jul 3, 2020 · Having re-scraped the lathe cross slide, thus changing the screw and nut alignment, we have to make the necessary adjustments to compensate and bring everyth Figure 114. Every lathe has it, the amount is an indication of how worn the screw and/or nut is. Now you can access the two 6mm hex head bolts that hold lock the cross slide at a specific angle. -----_ May 31, 2018 · Adjusting the gibs doesn’t do anything nether does adjusting the backlash nut (as it is I’ve got it set up with a large amount of backlash just now as I figured loosening the adjustment would eliminate any possibility of binding here!). Nov 2, 2010 · I'm slowly trying to "square" my Sieg C4 lathe. My solution for the annoying mini lathe compound slide angle adjustment problem. After adjusting the gib on the cross-slide, I've noticed some backlash in the handle, maybe . I removed the handles, and worked the dials off both the compound and the cross slide. Here, you can view videos of How-to Instructions that detail the assembly, installation, upgrading, repair, and operation of Sherline machines and accessories. The middle one is a set screw the pushes down on it acting as a fulcrum, while the other two pull up on it. Feb 20, 2024 · What are the main steps to adjust an Atlas lathe? Adjusting an Atlas lathe is a crucial task in ensuring the machine operates correctly and produces accurate results. Cross-slide lost motion is due to two factors: 1. I started out by this method and was not making any progress. The difference is your backlash. 060" backlash at the front end of travel, step 7. Dimensions, approximate overall Depth 19 in. If you did it properly there is only about . 015" to get it to align with the underside of the cross slide, and the new cross slide screw was not drilled for a cotter pin (broke two Dec 8, 2020 · This video shows how our guy Mike repaired our lathes with its backlash. On a machine such as a lathe the movements need to be set, so that the slideways can move freely but show no undue slackness. Adjusting the Gibs. 06 range is irrelevant. FIGURE 1—The red arrow is pointing to the gap between the Check backlash every inch or two across the length of the axis, repeating steps 9-12 to loosen the nut as needed, clamping the cross-slide at each adjustment. The second is mechanical lost motion in the feed screw assembly. A couple of questions. Feb 13, 2012 · there you will find a permanent fix for the problem as well as a Upgrade to that small Cross slide dial, which by the way will probably become unreadable when turning large diameter items. 004" before feeling the handle stiffening. for cross slide Weight (approximate numbers) Lathe 960 lb net, 1020 lb shipping Cabinet, left hand, incl. 003 backlash and no drag. The procedure is to first loosen the similar gib screw on the rear face of the cross slide (Figure 6a), then re-tighten the front screw to lock or adjust the gib in its new position. Figure 114. The discovery ends up being a easy fix which is nice. 3mm to 0. Adjusting the Anti-Backlash Components of a Sherline Lathe Troubleshooting anti-backlash problems on a Sherline lathe crosslide. A lathe that faces convex is a worthless reject that cannot be sold. You should notice three screws on top of the back of the cross slide towards the back. Dec 22, 2003 · I worked on the 1940 lathe most of the week, including replacing the cross slide screw and the compound screw and scraping the compound slide. The cross slide knob also has a bit of backlash, but the thinnest sheets are a bit too thick. Remove plate exposing 3 socket head screws. Jun 2, 2018 · Then you start adjusting the set screw as you rotate the cross slide handle one way and then the other until you can feel all the backlash disappear without binding the cross slide. Only thing I'm a bit disappointed in is a bit more turning resistance than I'd like and I think that's probably because I put "Moly-slip" grease on the leadscrew rather than oil - maybe just oil next time. Cross slide backlash adjustment screws. To adjust the backlash, remove the compound rest and loosen the four cap screws. I was surprised to find that the cross slide nut needed to be cut . 125" worth of backlash in the table and crossfeed on mills. I'm getting to know my first lathe and it's a nice 1940 South Bend 9A. Similar in design to the anti-backlash adjusters on the mill X- and Y-axis, the crosslide backlash can now be adjusted to a range of . 005". , Height 55 in. Backlash is the play between two interfa Jan 24, 2005 · It may also be the mounting for the screw allowing play, or even a loose nut. 007" and now I can move the cross-slide from max in to max out with no change in backlash. The feed screw nuts wear fairly quickly, easy to take it out, fit it to the feed screw and check for wear. The manual gives no instructions on how one would do so. I have a lathe that had 70 thou of backlash due mostly to the poor adjustment of the taper attachment, which on that machine, anchors the crossfeed screw. Backlash adjustment wasadded to the lathe crosslide in 2013. Cleaning and adjusting brought it down well under 10 thou, a lot better than I expected. I am not sure how to take apart saddle to get inside,in order to adjust-adjust what and how. Something seriously wrong with cross slide nut not secured to the cross slide or movement on the screw being able to move back and forward against the cross slide thrust bearings. Daryl MN Mar 26, 2018 · The cross slide nut adjustment said to, loosen the back nut, tighten the wedge in small increments, tighten up the back nut and try it out. You could always make a new one that is like that. Feb 20, 2024 · Characteristics Values; Type of machine: Lathe: Type of backlash: Gib type or adjustable nut type: Adjustment method: 1. May 30, 2021 · Hello,In this video i will show you how to fix backlash if your lathe doesn't have adjustment screw. 3 Tailstock off-set Follow the procedure below to off-set the tailstock to cut shallow tapers: 1. I replace the har 7x16 mini lathe cross slide backlash, in next video I hope to have this adjusted hopefully. The manual has one of those grainy drawings that says that there is cap screw on the nut to adjust backlash. Loosen tailstock in position by lowering locking handle (B, Figure 27) and loosening hexagon head eccentric shaft at back of tailstock. The top shaft you have in the pic is the screwcutting lead screw. 03mm-. Using the standard method of adjusting the nuts only resulted in the cross-slide handwheel becoming very tight, but no improvement in backlash. Sep 28, 2020 · Making a new nut for my cross slide to address the excessive backlash. loosen the 2 outside screws slightly,then tighten the middle one. The minimum amount of backlash on a lathe is barely tolerable. Aug 5, 2016 · The Boxford is an improved clone of the South Bend. I'm interested in hearing from those that have had a similar experience and got it corrected. Copying the thread form. foot brake linkage 100 lb shipping weight, each Cabinet, right hand, incl. Jan 7, 2016 · Usually the cross slide nut is a split nut with an adjustment screw through it to allow you to tighten up the two sides to get rid of backlash. This offset is quite large for cheap lathes, and pretty small on an expensive precision lathe, but there always is this offset in concave direction. The middle adjusts the h Just by the comments you can see how ignorant many are on how to adjust a mini lathe. 010 (record reading) M99. One is wear in the screw and nut, this can be addressed by replacement. Adjusting Leadscrew and Handwheel Backlash Nov 13, 2023 · If you want to actually reduce the amount of back lash on the cross-slide you can squeeze the brass lead-screw split nut. Based on a similar design used for years on the mill X- and Y-axes, it uses a round, knurled brass lock nut on the leadscrew that is tightened against the side of the saddle to pull Oct 16, 2019 · Backlash is just generally at odds with the perfectionist nature of machinists. May 12, 2022 · #machineshop #repair #shop #lathe May 27, 2020 · Backlash can be caused by wear in the acme thread or its nut, but is also commonly caused by a gap developing between the dial and the sleeve that supports i Oct 4, 2018 · If you have 2mm play that is nearly more than the pitch of your screw. Gibs are metal strips that sit on one side of a dovetail slide, such as the cross-slide and compound, and which are adjustable to take up any slack or slop so that the dovetail slide is very smooth and snug. Changing the compound slides angle on the mini lathe is incredible time-cons To adjust, use same method as for Cross Slide. Those screws hold the nut in position. at chip tray, add 8 in. The fact that quality, precision work is possible with backlash in the . 001" to . Jun 27, 2017 · This Video will Show You How to Fix Backlash on Lathe Cross-feed (Y Axis) - Adjusting Backlash on a Smithy Machine. Now that I have made the new tapered gib for the Monarch lathe, it is time to scrape it in to match the dovetails in the lathe cross slide using a Biax power Mar 26, 2022 · This reduced backlash to ~ . The tool slide also needs attention, but that's another issue. Jun 13, 2014 · My goal is to have the cross slide gib on my 7x14 mini lathe tight for rigidity and implement a bearing to make the slide smooth to operate, and maybe get rid of a little backlash in the process. The middle screw is pulling up a wedge between the 2 nuts that are held in place by the 2 outside screws,eliminating backlash. In addition, I provide Mar 9, 2010 · As a longtime Sherline owner (currently have a 4400 lathe and also a mill), one thing that I always had trouble with was keeping the backlash adjustment on the cross-slides in proper adjustment. Lathe Assembly and Backlash Adjustment Simple instructions on how to unpack and assemble your new lathe, including how to adjust the anti-backlash nut. I'll also address the problem with a screw that obstructs the compound angle while cutting internal threads. 010 U. This kit is available to retrofit any earlier Sherline lathe. 030" to about . Anywhere from 5 to 10 thousandths of backlash or more is not unusual. It binds so tightly that it is difficult to move even when not cutting. Backlash is the result of a gap between the handle and the Aug 4, 2016 · Slack in the feed screw to bracket is adjustable, you should be able to see if the gap between the micrometer dial and the bracket changes when you turn the handle back and forth. I've been using the lathe quite a bit lately, making a grinding wheel adaptor, and the backlash is annoying. Then, rock the cross slide handwheel back and forth, and tighten the set screw slowly until the backlash is at approximately 0. 060" on the cross feed and compound feed. Is there more to it than hogging out the bushing to house the bearing(s)? Apr 24, 2016 · All was well for a few months, but now I am experiencing difficulty turning the leadscrew to move the cross slide toward the head. My lathe is about 10 years old. My South Mar 2, 2015 · You adjust the backlash by using the 3 SCREWS. 003" as indicated on the graduated dial. Oct 5, 2018 · David Lindow demonstrates how to dismantle and adjust a Hardinge cross slide. Feb 16, 2021 · An quick way to make adjusting your compound and cross slide easier!All parts were from McMaster Carr (your lathe may have different threads). He did it by replacing cross slide nut and total cleaning of the cross slide and taper attachment. Starting in early 2014, Sherline added backlash adjustment on the lathe crosslide to all new lathes. I found that I couldnt adjust the dials to zero them out and didn't want to use a marker all the time. You do not check this measuring the angle between the cross slide dovetails on the saddle to the lathe bed. One of the simplest and most effective adjustments is adjusting the gib screws. 002"–0. Lathe G1 G98 G53 F10. Sometimes an axis must be jarred to make up excessive backlash and see more reliable results Understanding and adjusting for backlash are another key topic to getting the best results from your machines, here in this video we dive into this topic. 004", meaning that if I turn clockwise, I have to move counter clockwise . U. Note: the larger the distance between moments during this test the more accurate it will be. It's about 3/16". Jan 29, 2007 · It is quite common to have . Jul 18, 2016 · The final backlash ended up around 4 mils, with a bit of drag due to the slightly irregular metal washer on the left preventing anything tighter. 003" (. Sherline Instructional Videos Welcome to the Instructional-Video section of the Sherline Products website. 3/8 of turn (total) was required at step 9 to reduce the backlash at that position to 0. 07mm). Remove these two screws and lift the compound slide off of the cross slide. Turning the leadscrew to move the cross slide away from the head is perfectly free and normal. Presented at the 2018 Ornamental Turners International biennial symposium in S Subject: [Harrison Lathe] Cross-slide screw Since I bought my M300 a few weeks ago, there has been a large amount of backlash on the cross-slide dial (metric) - about 100 divisions. There are several steps involved in this process, which we will discuss in detail below. I've got the large dial. Unfortunately, my sd card buged while i was making threa Jul 26, 2020 · In this film I give an overview of the modifications I've made to improve the performance of the cross slide on my 7x14 Chinese mini lathe. It only says that it can be done with he caps crew. They cut the bronze nut crosswise, not lengthwise, and have an adjusting Aug 21, 2011 · There should be a cover plate on the cross slide table in front of the compound . After the adjustment, traverse the cross slide over its entire travel to be sure of smooth, even operation. Click the links below to … Continued diagnosing and adjusting the backlash if the anti-backlash nut (P/N 50130L/51130L) is coming out (see Figure 1). 010 U-. On the engineering lathe, there are three main slideway movements to maintain; The top slide; The I was trying to find out the cause of the excessive backlash in the cross slide (0. The problem is that I cannot figure out how to access it. Thank you. Read the description here - In this 20 minute video I make an improved cross slide nut to replace the broken one on my Optimum lathe. ujxuyk abxt gari okpy wbnea tpdr lztmy hvgtgaz ntsd dxeir