TWI644741B - Powered chuck with adjustable eccentricity - Google Patents

Abstract

A power type collet capable of adjusting an eccentric amount, comprising rotating around a rotating shaft a rotating body, a clamping device is reciprocally disposed on the body, a weight member is movably disposed on the body, and the clamping device is eccentrically displaced on the rotating shaft of the body, thereby changing the eccentric displacement of the clamping device At the same time, the weight member can also be elastically adjusted to the position of the body, so that the overall power chuck and the overall center of gravity of the workpiece are maintained in a stable position.

Description

Powered chuck with adjustable eccentricity

The present invention relates to a machine tool, and more particularly to a power chuck for an adjustable eccentric amount of a machining machine.

In order to make the machining operation more convenient and more versatile and flexible, the processing of various processing devices and fixtures has been continuously improved and enhanced.

For example, if the eccentric machining of a general workpiece is required, the conventional method is to place the workpiece on the chuck of the machine tool in such a manner as to deviate from the axis of the rotating spindle of the machine tool, and the clamping method requires manual stepwise adjustment of the chuck. The position of each jaw, and then the jaws are fixed to the workpiece to be processed, the whole processing is slow and inefficient, so it is necessary to overcome the related shortcomings while maintaining the processing efficiency.

Accordingly, it is a primary object of the present invention to provide a power chuck that is easy to operate and use with an adjustable eccentric amount.

In order to achieve the foregoing object, the power chuck of the present invention provides an adjustable eccentric amount comprising a body, a clamping device, and a weight member; the body is rotatable about a rotation axis; the clamping device is Mounted on a moving path reciprocatingly The body is such that the clamping device is relatively eccentrically located on the rotating shaft of the body; the weight member is movably disposed on the body; thereby achieving a convenient and efficient manner for the user to shift the clamping device to process the eccentricity The workpiece can also be flexibly adjusted by the weight to keep the overall center of gravity of the overall power chuck and workpiece in a stable position.

10‧‧‧ Ontology

11‧‧‧ side wall

12‧‧‧ front end

13‧‧‧ Guide slot

14‧‧‧ trench

15‧‧‧First positioning plane

16‧‧‧First T-slot

18‧‧‧Second T-slot

19‧‧‧T-block

20‧‧‧Clamping device

22‧‧‧ pedestal

24‧‧‧Master claw

25‧‧‧Second positioning plane

26‧‧‧Plunger

28‧‧‧stop plate

29‧‧‧"

30‧‧‧With weights

40‧‧‧ bolt

41‧‧‧ head

42‧‧‧Adjusting nut

46‧‧‧ Positioning parts

60‧‧‧ pads

BRIEF DESCRIPTION OF THE DRAWINGS In the following, the present invention will be described in detail with reference to the accompanying drawings in which: FIG. 1 is a perspective view of a preferred embodiment of the present invention; 3 is a side view of a preferred embodiment of the present invention; FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 3; and FIG. 5 is a 5-5 of FIG. A cross-sectional view of the section line; Fig. 6 to Fig. 7 are diagrams showing the operation of another section plane.

Referring to FIGS. 1 to 6 , a power chuck with adjustable eccentricity according to a preferred embodiment of the present invention includes a body 10 , a clamping device 20 , and a weight member 30 . The disk 10 is substantially disk-shaped, and the body 10 can be disposed on the rotating main shaft of the machine tool such that the body 10 rotates in the center of the rotating shaft. A groove 14 is defined in the center of the front end surface 12 of the body 10. Two first T-shaped grooves 16 are formed on two sides of the groove 14. Two outer T-shaped grooves 18 are recessed in the outer peripheral wall of the body 10. The weight member 30 is moved along the outer circumference of the body 10 by a plurality of T-shaped blocks 19 disposed on the second T-shaped groove 18, and the T-shaped block 19 can be locked as needed to make the weight The piece 30 is positioned on the body 10. The front end surface 12 of the main body 10 is provided with a side wall 11 extending along a part of the edge of the main body 10 to form a laterally open guide groove 13. The side wall 11 is provided with a first inner peripheral surface corresponding to the guide groove 13 Positioning plane 15.

The clamping device 20 includes a substantially cylindrical base 22, three end portions of the base 22 are radially movable, and a plunger 26 and a stopper plate are disposed inside the circumferential wall of the base 22. 28. A bolt 40 and an adjustment nut 42. The front end of the plunger 26 and the three main claws 24 are fitted to each other, the stopper plate 28 is fixed to the rear end of the plunger 26, and the stopper plate 28 is provided with a radial dissection groove 29 through which the bolt 40 is inserted. The cap 42 is screwed to the bolt 40 and abuts against the stop plate 28. When the adjusting nut 42 changes the relative position of the bolt 40, the nut 42 can be pulled together with the head 41 of the bolt 40 to pull the stopping plate 28 and the plunger 26, thereby driving the main claws 24 to move and adjust the positionable size. .

The clamping device 20 is coupled to the inside of the guiding groove 13 of the body 10 by a plurality of T-shaped blocks 19 disposed on the first T-shaped groove 16, so that the clamping device 20 is movably disposed on the body 10, and the T is locked as needed. The block 19 positions the clamping device 20 to the body 10. The base 22 is provided with two positioning members 46 embedded in the grooves 14 of the body 10, so as to guide the clamping device 20 to accurately displace in a linear direction.

The outer peripheral surface 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 spacer 60 can be provided, and the thickness of the spacer 60 can be used to offset the clamping device 20 by a predetermined distance along the guide groove 13, thereby producing an eccentric displacement. The user only needs to select the spacer 60 of the appropriate thickness according to the eccentric size of the processing, and the accurate displacement eccentricity can be obtained.

Please refer to FIG. 6 and FIG. 7 again. When the spacer 60 is disposed between the base 22 and the body 10, the clamping device 20 can be eccentrically displaced, and the user can The position of the weight member 30 is adjusted by itself, so that the weight member 30 is symmetrically distributed and the overall power chuck and the center of gravity of the workpiece are maintained at the position of the center of gravity of the rotation, so that the eccentric vibration phenomenon does not occur when the chuck is rotated at a high speed. .

It is worth mentioning that when the clamping device 20 is offset, since the bolt 40 is the grooving groove 29 passing through the stopping plate 28, the movement of the clamping device 20 does not interfere with the bolt 40 and the nut 42, just the right. Produces the effect of staggering and shifting each other.

By means of the above-mentioned constituent members, the invention only needs to select a spacer of a proper height to change the eccentric displacement of the clamping device, and provides a convenient and efficient way for the user to shift the clamping device to process the eccentric workpiece, and at the same time, can also flex itself. Adjusting the weights to maintain the overall center of gravity of the overall power chuck and workpiece in a stable position, improve machining accuracy and quality, the overall manufacturing cost of the case is relatively low.

Claims (6)

The utility model relates to a power type collet capable of adjusting an eccentric amount, comprising: a body rotating around a rotating shaft, the outer peripheral wall of the body is provided with a second T-shaped groove; and a clamping device reciprocating along a moving path Movably mounted on the body, the clamping device is provided with an eccentric workpiece to be processed; and a weight member is disposed along the outer peripheral wall 360 of the body by a T-shaped block disposed in the second T-shaped groove The weight is movably disposed on the body; wherein the weight member is located at a position where the center of gravity of the symmetrical and evenly distributed integral power chuck and the eccentric workpiece to be processed is maintained at a center of rotation. The power-type collet of the adjustable eccentric amount according to claim 1, wherein the body has two first T-shaped grooves, and the clamping device is divided into T shapes respectively disposed in each of the first T-shaped grooves. A block is coupled to the body to allow the clamping device to be movably disposed to the body. The power-type collet of the adjustable eccentricity according to claim 1, further comprising a spacer disposed between the clamping device and the body, such that the clamping device is relatively eccentric Located on the axis of rotation of the body. An adjustable eccentricity power chuck according to claim 1, wherein the body is provided with a side wall extending along a portion of the edge of the body to form a laterally open guide groove. The clamping device is movably disposed on the guide groove. The power-type collet of the adjustable eccentricity according to claim 4, wherein the side wall is provided with a first positioning plane, and the clamping device is provided with a second positioning plane, and the spacer is disposed at the first positioning Between the plane and the second positioning plane. The power-type collet of the adjustable eccentricity according to claim 1, wherein the clamping device comprises a base, the base is embedded with a plurality of movable main claws, and the base is provided with a plunger, a stopper plate, a bolt, and an adjusting nut, the plunger and the main claws are fitted to each other, the stopper plate is fixed to the plunger, and the stopper plate is provided with a radial groove, the bolt is worn The adjusting nut is screwed to the bolt and abuts against the stopping plate to move the stopping plate.