CN108421996B

CN108421996B - Power chuck for manually adjusting eccentricity

Info

Publication number: CN108421996B
Application number: CN201710080055.1A
Authority: CN
Inventors: 吴亚爵
Original assignee: Shanghai Ruiqimei Trading Co ltd
Current assignee: Shanghai Ruiqimei Trading Co ltd
Priority date: 2017-02-15
Filing date: 2017-02-15
Publication date: 2020-07-24
Anticipated expiration: 2037-02-15
Also published as: CN108421996A

Abstract

The invention provides a power type chuck for manually adjusting eccentricity, which comprises: a main body rotatable about a rotation axis, a gripping device reciprocally disposed on the main body, a weight movably disposed on the main body, and a pad disposed between the gripping device and the main body so that the gripping device is eccentrically displaced with respect to the rotation axis of the main body; therefore, the eccentric displacement of the clamping device can be changed by only selecting a proper cushion block, so that a user can conveniently and effectively displace the clamping device to process an eccentric workpiece, and meanwhile, the counterweight piece can be automatically and elastically adjusted, so that the integral gravity center of the integral eccentric chuck and the integral gravity center of the workpiece are kept at a stable position.

Description

Power chuck for manually adjusting eccentricity

Technical Field

The invention relates to a machining device, in particular to a power type chuck for manually adjusting the eccentricity of the machining device.

Background

In order to facilitate the operation of machining and to comply with versatile and flexible machining procedures, the construction of various machining devices and fixtures has been improved and their functions have been enhanced.

Taking a general workpiece needing to be processed eccentrically as an example, the conventional method is to clamp the workpiece on a chuck of a machine tool in a manner of deviating from the axis of a rotating spindle of the machine tool for processing, the clamping method needs to manually adjust the position of each clamping jaw step by step, and then the clamping jaws are used to fix the workpiece to be processed, so that the whole processing is slow and inefficient, and related disadvantages need to be overcome on the premise of maintaining the processing efficiency.

Disclosure of Invention

Therefore, the main object of the present invention is to provide a power chuck with an eccentric amount manually adjusted, which is convenient to operate and use.

In order to achieve the above object, the power chuck for manually adjusting the eccentric amount provided by the present invention comprises a main body, a clamping device, a weight member and a pad; the main body can rotate around a rotating shaft; the clamping device is arranged on the main body in a reciprocating way along an action path; the weight part is movably arranged on the main body; the cushion block is arranged between the clamping device and the main body, so that the clamping device eccentrically displaces relative to a rotating shaft of the main body. Therefore, the eccentric displacement of the clamping device can be changed by only selecting a cushion block with proper height, so that a user can conveniently and effectively displace the clamping device to process an eccentric workpiece, and meanwhile, the counterweight piece can be automatically and elastically adjusted, so that the integral gravity center of the integral eccentric chuck and the integral gravity center of the workpiece are kept at a stable position.

Drawings

The present invention will now be described in detail by way of examples of preferred embodiments with reference to the following drawings. In the following figures:

FIG. 1 is a perspective assembly view of a preferred embodiment of the present invention.

Fig. 2 is an exploded perspective view of a preferred embodiment of the present invention.

Fig. 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.

Fig. 5 is a cross-sectional view taken along line 5-5 of fig. 3.

Fig. 6 is another sectional plan view of the operation.

Fig. 7 is another sectional plan view of the operation.

(symbol description)

10 main body

11 side wall

12 front end face

13 guide groove

14 grooves

15 first location plane

16 first T-shaped groove

18 second T-shaped groove

19T-shaped block

20 clamping device

22 base

24 main claw

25 second location plane

26 plunger

28 stop plate

29 cutting groove

30 weight member

40 bolt

41 head part

42 adjusting nut

46 positioning piece

60 cushion block

Detailed Description

Referring to fig. 1 to 6, a power chuck for manually adjusting an eccentricity according to a preferred embodiment of the present invention includes a main body 10, a clamping device 20, and a weight member 30, wherein the main body 10 is substantially disc-shaped, and the main body 10 can be disposed on a rotating spindle of a machine tool, such that the main body 10 rotates in situ around a rotating shaft. The main body 10 is provided with a groove 14 at the center of the front end surface 12, the two sides of the groove 14 are respectively provided with a first T-shaped groove 16 which is parallel to each other, and the outer peripheral wall of the main body 10 is concavely provided with a second T-shaped groove 18. The weight member 30 moves along the outer circumference of the main body 10 by a plurality of T-blocks 19 provided to the second T-shaped groove 18, and the T-blocks 19 are locked as required, thereby positioning the weight member 30 on the main body 10. The front end surface 12 of the body 10 is provided with a side wall 11, the side wall 11 extends along a part of the edge of the body 10 to form a guide groove 13 which is open to the side, and the inner peripheral surface of the side wall 11 corresponding to the guide groove 13 is provided with a first positioning plane 15.

The clamping device 20 includes a base 22 having a substantially cylindrical shape, three main claws 24 that are radially movable are fitted into an end portion of the base 22, and a plunger 26, a stopper plate 28, a bolt 40, and an adjusting nut 42 are provided inside an annular peripheral wall of the base 22. The front end of the plunger 26 is mutually embedded with the three main claws 24, the stop plate 28 is fixed at the rear end of the plunger 26, a radial cutting groove 29 is arranged on the stop plate 28, a bolt 40 is arranged in the cutting groove 29 in a penetrating way, and an adjusting nut 42 is screwed on the bolt 40 and abuts against the stop plate 28. When the relative position of the adjusting nut 42 on the bolt 40 is changed, the positioning dimension can be adjusted by the adjusting nut 42 pulling the stop plate 28 and the plunger 26 together with the head 41 of the bolt 40, thereby moving the main claws 24.

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

The outer surface of the annular 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, a spacer 60 can be arranged between the first positioning plane 15 of the main body 10 and the second positioning plane 25 of the clamping device 20, and the thickness of the spacer 60 is utilized to enable the clamping device 20 to deviate a preset distance along the guide groove 13, so that the eccentric displacement effect can be generated. The user only needs to select the cushion block 60 with proper thickness according to the machined eccentric size, and the accurate eccentric displacement can be obtained.

Referring to fig. 6 and 7, when the pad 60 is disposed between the base 22 and the body 10, the clamping device 20 can generate an eccentric displacement effect, and the user can adjust the position of the weight 30 by himself, so that the weight 30 is located at a position where the center of gravity of the entire eccentric chuck and the workpiece is symmetrically and evenly distributed to maintain the center of gravity of the workpiece at a rotating center, and thus the chuck can be rotated at a high speed without eccentric vibration.

It is worth mentioning that when the clamping device 20 is displaced, the movement of the clamping device 20 does not interfere with the bolt 40 and the nut 42, since the bolt 40 passes through the cut-out slot 29 of the stop plate 28, just to produce the mutual offset and displacement effect.

Through the components, the eccentric displacement of the clamping device can be changed by only selecting the cushion block with proper height, a user can conveniently and effectively displace the clamping device to machine an eccentric workpiece, and simultaneously, the balance weight piece can be automatically and elastically adjusted, so that the integral eccentric chuck and the integral gravity center of the workpiece are kept at a stable position, the machining precision and the machining quality are improved, and the integral manufacturing cost is relatively low.

Claims

1. A power chuck for manually adjusting the eccentricity, comprising:

a main body rotatable about a rotation axis, the main body having a guide groove;

a clamping device which is arranged on the guide groove of the main body in a reciprocating manner along an action path;

a weight member movably provided on the main body; and

a pad provided between the clamping device and the position of the clamping device corresponding to the guide groove of the body such that the clamping device is eccentrically displaced with respect to the rotational axis of the body;

wherein the peripheral wall of the main body is circular and is provided with a second T-shaped groove,

the weight member is provided to the main body to be movable 360 degrees along an outer circumferential wall of the main body by T-shaped blocks respectively provided in the second T-shaped grooves.

2. The power chuck for manually adjusting an eccentricity according to claim 1,

the main body has two first T-shaped slots,

the clamping device is coupled to the main body by T-shaped blocks respectively provided in the first T-shaped grooves, so that the clamping device is movably provided on the main body.

3. The power chuck for manually adjusting an eccentricity according to claim 1,

the body is provided with a side wall extending along a part of an edge of the body to form the guide groove opened toward a side, and the clamping device is movably provided in the guide groove.

4. The power chuck for manually adjusting an eccentricity according to claim 3,

the lateral wall is provided with a first positioning plane, the clamping device is provided with a second positioning plane, and the cushion block is arranged between the first positioning plane and the second positioning plane.

5. The power chuck for manually adjusting an eccentricity according to claim 1,

the clamping device comprises a base seat, a clamping device and a clamping device,

a plurality of movable main claws are embedded on the base, a plunger, a stop plate, a bolt and an adjusting nut are arranged in the base,

the plunger is mutually embedded with the main claws, the stop plate is fixed on the plunger, a radial cutting groove is formed in the stop plate, the bolt is arranged in the cutting groove in a penetrating mode, and the adjusting nut is screwed on the bolt and abuts against the stop plate, so that the stop plate can move.