How to process eccentric workpieces with four jaw chuck? Please explain the specific steps in detail

How to process eccentric workpieces with four-jaw chuck, a handful of workpiece surface to be processed, the upper line platform according to the requirements of the drawing, draw a cross line to find the center of the inner circle or outer circle to be processed, hit the foreign punch, and draw any circle with this center (the diameter of the circle is as large as possible). Second, the four jaws are clamped (according to the shape of the workpiece to determine which one is the positive claw and which is the reverse claw), let go. Install a live thimble on the tailstock, put the workpiece on the four-jaw chuck, and then use a live thimble to push against the center hole, and lock it all.

At this time, start and tighten the jaws, one side of the chuck, and one side of the chuck. If the four workpieces are not high, use the needle disc to calibrate, the needle of the needle disc is aligned with the circle just drawn, corrected according to the circle, and then force and tighten the four claws. If the workpiece has high requirements, use the dial gauge to hit the datum plane after the rough correction on the top, and calibrate the two directions and circles in both vertical and horizontal directions to the requirements.

Fifth, go back to the tailstock, turn it, open the slow gear to try it, you can go up at a speed of one gear, and you can process it.

Make an eccentric garden plate and the workpiece together and clamp it, and put it on the chuck together to align it.

The above answer is very useful to me, thank you.

The manual chuck is to manually tighten the table, and then loosen the batch processing, there is no skill, proficiency.

If you pursue fast, you can also use the hydraulic-pneumatic three-jaw chuck, which does not need to be manual, and the efficiency is significantly improved, but it is much more expensive than manual.

The three-jaw chuck is also known as the self-centering chuck, and the clamped part should be the positioning datum. When aligning, you can use a dial gauge to measure the circumferential runout of the clamped part, and you can use the scribing needle to approach the surface during rough machining, and rotate the chuck to see the gap between the scribing needle and the surface of the workpiece to judge its runout. If the runout is large and does not meet the accuracy requirements, the correct method is to check the coaxiality of the chuck itself and the spindle of the machine tool and reinstall the chuck or correct the jaw, and the second is to take the method of padding copper between the jaw and the workpiece to reduce the runout of the workpiece surface to the allowable range of the process.

If the workpiece is short or the part is a chuck, it is best to use the end face assist positioning at the same time.

Hello dear and happy to answer for you. Four-jaw single-action chuck, oh kiss. Eccentric workpieces can be turned by clamping fixtures such as three-jaw self-centering cascuum-sliding discs, four-jaw single-acting chucks and two sparrow cracks.

This article specifically introduces the use of four-jaw single-action chuck to install and turn eccentric workpieces. Small quantity, small eccentricity, short length, not convenient for two top dealers or more complex shape of eccentric workpiece, can be installed on the four-jaw Dandong chuck turning. Kissing the lead wax is all the answer to the Lord, I hope it can help you, I wish you a happy life

Summary. According to the three-jaw chuck you mentioned, it is recommended that when you adjust the wall thickness difference of the workpiece, you should first check the steel jaws built into the chuck to ensure that they have sufficient strength and grasp the workpiece firmly; Then adjust the distance between the jaws to the desired angle of rotation, so that the wall thickness difference of the workpiece can be effectively adjusted.

According to the three-jaw chuck you mentioned, it is recommended that when you adjust the wall thickness difference of the workpiece, you should first check the steel jaws built into the chuck to ensure that they have sufficient strength and are relatively firm for the workpiece; Then adjust the distance between the steel claws, and adjust the Chi Lingfu to the desired rotation angle, so that Wang Xin can effectively adjust the wall thickness difference of the workpiece.

Dear, can you describe your problem in detail.

I am this kind of manual chuck, how to adjust the wall thickness difference of the workpiece.

Machining of thin-walled cylinder liners.

For manual chucks, the steps to adjust the wall thickness difference of the workpiece are somewhat different. First of all, you need to detect if there is a problem between the chuck and the workpiece, such as loosening or twisting; After the bridge is picked, use the corresponding tools and wrenches to adjust the chuck, and move the bolt to complete the adjustment of the workpiece placement position; Finally, measure the wall thickness difference of the workpiece to see if you have achieved your desired goal.

Dear, can you describe your problem in detail.

With this chuck to process thin-walled cylinder liners, there is a wall thickness difference on the chuck, how to adjust.

For the machining of thin-walled cylinder liners, you need to consider many aspects. First of all, check whether the bayonet of the chuck is firm and evenly distributed to ensure accurate welding; Secondly, check whether the position of the chuck is correct to ensure that the part to be processed can be fixed correctly; Finally, there is the adjustment of the wall thickness difference of the workpiece you mentioned, when the workpiece is fastened to the chuck lifting leak, you can use a wrench to adjust the distance between the steel claws on the chuck, and then measure the wall thickness difference of the workpiece, so that you can achieve the result you want.