TW201822922A - Power type chuck capable of adjusting eccentricity maintains overall center of gravity of the integral eccentric chuck and workpiece - Google Patents

Abstract

A power type chuck capable of adjusting eccentricity comprises a body which rotates around a rotating shaft as a center, a clamping device arranged on the body in a reciprocating mode, and a counterweight member movably arranged on the body. The clamping device can be relatively and eccentrically displaced on the rotating shaft of the body, so that the eccentric displacement of the clamping device can be changed, and at the same time the counterweight member can be automatically and elastically adjusted to the position of the body, as a result, the overall center of gravity of the integral eccentric chuck and workpiece is maintained at a stable position.

Description

Power chuck with adjustable eccentricity

The invention relates to a mechanical processing machine, and more particularly to a power chuck with adjustable eccentricity for a mechanical processing machine.

In order to make the operation of mechanical processing more convenient and more in line with the diverse and flexible processing programs, various different processing devices and fixtures have always been continuously improved and enhanced in their functions.

Taking the eccentric machining of a general workpiece as an example, the traditional method is to clamp the workpiece in a chuck of the machine tool for processing away from the axis of the rotating spindle of the machine tool. This clamping method requires manual stepwise adjustment of the chuck. The position of each clamping jaw, and then fixing the clamping jaw to the workpiece to be processed, the entire processing is slow and inefficient, so it is necessary to overcome the related disadvantages while maintaining the processing efficiency.

Therefore, the main object of the present invention is to provide a power-type chuck with adjustable eccentricity for convenient operation and use.

In order to achieve the foregoing object of the invention, a power-type chuck with adjustable eccentricity provided by the present invention includes a body, a clamping device, and a counterweight; the body can rotate around a rotation axis; the clamping device can The body is mounted on the body reciprocatingly along a moving path, so that the clamping device is relatively eccentrically located on the rotation axis of the body; the counterweight is movably disposed on the body; thereby providing convenience and convenience for users Efficient way to shift the clamping device to process eccentric workpieces. At the same time, it can also elastically adjust the weights to keep the overall eccentric chuck and the overall center of gravity of the workpiece in a stable position.

Please refer to FIG. 1 to FIG. 6, a power chuck with adjustable eccentricity provided by a preferred embodiment of the present invention includes a body 10, a clamping device 20, and a weight 30, the body 10 The shape of the disk is substantially circular. The main body 10 can be set on the rotating main shaft of the machine tool, so that the main body 10 can rotate in place according to the rotation axis. A groove 14 is formed in the center of the front surface 12 of the body 10. Two first T-shaped grooves 16 are parallel to each other on both sides of the groove 14, and a second T-shaped groove 18 is recessed on the outer peripheral wall of the body 10. The weight piece 30 is moved along the outer periphery of the body 10 by a plurality of T-shaped blocks 19 provided in the second T-slots 18, and the T-shaped blocks 19 can be locked as required to position the weight piece 30 on the body 10 . The front end surface 12 of the main body 10 is provided with a side wall 11. The side wall 11 extends along a part of the edge of the main body 10 to form a guide groove 13 that is open to the side. The side wall 11 is provided with a first corresponding to the inner peripheral surface of the guide groove 13.位置 平面 15。 Positioning plane 15.

The clamping device 20 includes a substantially cylindrical base 22. Three ends of the base 22 are embedded with three main claws 24 that can move in the radial direction. A plunger 26 and a stop plate are arranged inside the peripheral wall of the base 22. 28. A bolt 40 and an adjusting nut 42. The front end of the plunger 26 and the three main claws 24 are fitted to each other. A stop plate 28 is fixed to the rear end of the plunger 26. The stop plate 28 is provided with a radial cut groove 29, and a bolt 40 is passed through the cut groove 29. The cap 42 is screwed to the bolt 40 and abuts against the stop plate 28. When the adjustment nut 42 changes the relative position of the bolt 40, the stopper plate 28 and the plunger 26 can be pulled through the nut 42 and the head 41 of the bolt 40, thereby driving each main claw 24 to move and adjust the positionable size .

The clamping device 20 is coupled to the inside of the guide groove 13 of the main body 10 by a plurality of T-shaped blocks 19 provided in the first T-shaped groove 16, so that the clamping device 20 is movably disposed on the main body 10 and locks T as required. The block 19 is formed to position the clamping device 20 on the body 10. The base 22 is provided with two positioning members 46 embedded in the groove 14 of the main body 10, which can guide the clamping device 20 to be accurately displaced in a linear direction.

The outer peripheral wall of the base 22 of the clamping device 20 is also provided with a second positioning plane 25 corresponding to the first positioning plane 15. Between the first positioning plane 15 of the body 10 and the second positioning plane 25 of the clamping device 20. A cushion block 60 may be provided, and the thickness of the cushion block 60 is used to offset the clamping device 20 along the guide groove 13 by a predetermined distance, so as to produce an eccentric displacement effect. The user only needs to select a pad 60 with an appropriate thickness according to the eccentricity of the processing, so as to obtain an accurate displacement eccentricity.

Please refer to FIG. 6 and FIG. 7 again. When the pad 60 is disposed between the base 22 and the body 10, the clamping device 20 can produce an eccentric displacement effect, and the user can adjust the weight 30 by himself. The position of the counterweight 30 is symmetrical and the center of gravity of the overall eccentric chuck and the workpiece is evenly maintained at the center of rotation, so that the eccentric vibration does not occur when the chuck rotates at high speed.

It is worth mentioning that when the clamping device 20 is offset, since the bolt 40 passes through the cutout 29 of the stopper plate 28, the movement of the clamping device 20 will not interfere with the bolt 40 and the nut 42, which is just fine. The effect of shifting and shifting each other is produced.

With the above-mentioned constituent members, the present invention can change the eccentric displacement of the clamping device only by selecting a pad of an appropriate height, providing users with a convenient and efficient way to displace the clamping device to process eccentric workpieces, and at the same time, it can also be elastic. Adjust the weights to keep the overall eccentric chuck and the overall center of gravity of the workpiece in a stable position, improve the processing accuracy and quality, and the overall manufacturing cost of this case is relatively low.

10‧‧‧ Ontology

11‧‧‧ sidewall

12‧‧‧ front face

13‧‧‧Guide

14‧‧‧ Trench

15‧‧‧first positioning plane

16‧‧‧First T-slot

18‧‧‧Second T-slot

19‧‧‧T-shaped block

20‧‧‧ clamping device

22‧‧‧ base

24‧‧‧Master

25‧‧‧ second positioning plane

26‧‧‧ plunger

28‧‧‧ Stop plate

29‧‧‧ trench

30‧‧‧ Counterweight

40‧‧‧ Bolt

41‧‧‧Head

42‧‧‧ adjusting nut

46‧‧‧ Positioning piece

60‧‧‧ spacer

Hereinafter, the present invention will be described in detail with a preferred embodiment and the following diagrams; and in the following diagrams: FIG. 1 is a three-dimensional combined diagram of a preferred embodiment of the present invention; FIG. 2 is a comparative diagram of the present invention. An exploded perspective view of the preferred embodiment; Figure 3 is a side view of a preferred embodiment of the present invention; Figure 4 is a sectional view taken along the line 4-4 in Figure 3; Figure 5 is a figure 5-5 in Figure 3 Sectional sectional view; Figures 6 to 7 are schematic diagrams of the operation of another sectional plane.

Claims (6)

A power chuck with adjustable eccentricity includes: a body that can rotate around a rotation axis as a center; a second T-shaped groove is provided on the outer peripheral wall of the body; a clamping device can reciprocate along a moving path The weight is movably installed on the body; and a counterweight is provided on the body so as to be able to move 360 degrees along the outer peripheral wall of the body by a T-shaped block allocated to the second T-shaped groove. The adjustable eccentric amount of the power type chuck according to item 1 of the patent application scope, wherein the body has two first T-shaped grooves, and the clamping device is divided into T-shapes of the first T-shaped grooves. The block is coupled to the body, so that the clamping device is movably disposed on the body. As described in item 1 of the scope of patent application, the power-type chuck with adjustable eccentricity further includes a pad, which is disposed between the holding device and the body, so that the holding device is relatively eccentrically moved. Located on the axis of rotation of the body. The adjustable eccentricity type power chuck according to item 1 of the scope of patent application, wherein the body is provided with a side wall, and the side wall extends along a part of the edge of the body to form a guide groove which is open to the side, The clamping device is movably disposed in the guide groove. According to the power chuck with adjustable eccentricity described in item 4 of the scope of patent application, wherein the side wall is provided with a first positioning plane, the clamping device is provided with a second positioning plane, and the pad is provided at the first positioning Between the plane and the second positioning plane. As described in item 1 of the scope of the patent application, the power-type chuck with adjustable eccentricity, wherein the clamping device includes a base, the base is embedded with a plurality of movable main jaws, and the base is provided with a plunger, A stop plate, a bolt, and an adjusting nut. The plunger and each of the main claws are fitted to each other. The stop plate is fixed to the plunger. The stop plate is provided with a radial cut groove. The adjusting nut is provided in the cut groove, and the adjusting nut is screwed to the bolt, and abuts against the stop plate, thereby moving the stop plate.