TW201711787A - A clamping device for a tool - Google Patents

Abstract

The present invention relates to a clamping device for a tool, and includes at least three pivoting members and a drive member drivingly connected to the pivoting members. The three pivoting members are used to clamp an object to be processed, then the drive member rotates the pivoting members, so that the object to be processed can be rotated while being clamped. Since the clamping device is provided with at least three pivoting members, the object to be processed can be clamped and processed without vibrating.

Description

Tooling device

The invention relates to a machine tool, in particular to a clamping device for a machine tool.

The machine tool is an indispensable driving force for the development of the modern social industry. The general machine tool is usually used to precisely cut metal to produce other machines or machined metal parts. In order to machine the workpiece, the machine tool moves between the workpiece and the tool. Machine tools have generally been used for forming, cutting and joining.

Most of the machine tools are equipped with a chuck for the workpiece to be machined. The chuck of the conventional machine tool is mostly a three-jaw or four-jaw type chuck, as shown in Figure 1. The chuck body 41 and the three-claw portion 41 are disposed, and the claw portions 41 are displaceably disposed on the body 40. A clamping space 42 is formed between each of the claw portions 40, and the claw portions 41 are displaced by the claw portions 41. Position to control the size of the clamping space 42, thereby clamping workpieces of various sizes;

When the machine tool is used for machining, the grinding machine is taken as an example, and the workpiece to be processed is clamped by the claw portion 41, and the chuck body 40 is driven to rotate to drive the workpiece to rotate, and then the workpiece to be processed by one grinding wheel of the grinding machine is used. The processing is performed. However, while the conventional chuck is used to clamp the workpiece and rotate, since only the workpiece is sandwiched by the claw portions 41 at a single point, it is inevitable that fine sway and deviation will be generated, thereby reducing the quality of the processing. Therefore, there is a need for a clamping device for a machine tool that can reduce sloshing and reduce machining errors to increase the value of the processed product.

The invention provides a clamping device for a machine tool, the main purpose of which is to provide a clamping device for a machine tool capable of reducing sloshing and reducing machining errors to increase the value of the processed product.

In order to achieve the above object, the clamping device of the machine tool of the invention comprises:

a body having a fixed seat and a sliding seat, the sliding seat facing the fixing seat, the sliding seat is spaced apart from the fixing seat, and defining a direction in which the fixing seat extends to the sliding seat is Radially, the fixed seat is fixed, and the sliding seat can be displaced along the radial direction;

At least three pivoting members are pivotally disposed on the seat body, the pivoting members are configured to clamp a workpiece, the workpiece is disposed between the pivoting members, and at least one of the pivoting members is disposed At the sliding seat, at least one of the pivoting members is disposed on the fixing base;

A driving device is coupled to at least one of the pivoting members for driving the pivoting member to rotate.

It can be seen from the foregoing that the clamping device of the machine tool of the present invention mainly drives the workpiece to be processed by the pivoting member, and then the pivoting member is driven by the driving device to rotate the workpiece to enable the workpiece to be Simultaneously rotating by the pivoting members, since the clamping device of the machine tool of the present invention is configured to hold the workpiece by at least three pivoting members, it is possible to offset the shaking to achieve balance. The workpiece is better stabilized during processing, thereby achieving the purpose of providing a clamping device for a machine tool capable of reducing sloshing and reducing machining errors to increase the value of the workpiece.

In order to enable your review committee to have a better understanding and understanding of the purpose, characteristics and efficacy of the invention, please follow the brief description of the following:

The clamping device of the machine tool of the present invention, as shown in FIGS. 1 to 7, includes:

The body 10 has a fixing base 11 and a sliding seat 12 facing the fixing base 11. The sliding seat 12 is spaced apart from the fixing seat 11 to define the fixing seat 11 to extend to The sliding seat 12 has a radial direction X. The fixing base 11 is fixed. The sliding seat 12 is displaceable along a radial direction X. The fixing base 11 has a first end 111 and a second end. 112, the first end 111 extends to the second end 112 is a vertical direction Y;

At least three pivoting members 20 are pivotally disposed on the base body 10. The pivoting members 20 are cylindrical, and the pivoting members 20 are configured to hold a workpiece S to be processed, the workpiece S The system has a center point S1, and the workpiece S is disposed between the pivoting members 20, at least one of the pivoting members 20 is disposed on the sliding seat 12, and at least one of the pivoting members 20 is disposed on the fixed portion In the first embodiment of the present invention, as shown in FIG. 5 and FIG. 6, the pivoting members 20 are respectively inserted through a pivot shaft 21, and the pivot shaft 21 is pivotally disposed on the base body 10. The number of the rotating members 20 is three, and the sliding seat 12 has one pivoting member 20, and the fixing base 11 has two pivoting members 20, preferably two of the pivoting members of the fixing base 11 The pivot 21 of the spring 20 is disposed along the vertical direction Y. The pivot 21 of the pivoting member 20 of the sliding seat 12 is located in the same radial direction X as the center point S1 of the workpiece S. In the second embodiment of the present invention, as shown in FIG. 7, the number of the pivoting members 20 is four, and the sliding seat 12 has two pivoting members 20, and the fixing base 11 has two pivoting members 20 In the sliding seat 12 The pivot member 20 is provided along the line Y in the vertical direction, the fixing base 11 to the two lines of the pivot member 20 disposed along the vertical Y direction;

A driving device 30 is connected to at least one of the pivoting members 20, and in the first embodiment of the present invention, the driving device 30 is dynamically connected to the pivoting member 20 pivotally mounted on the sliding seat 12, the driving device The 30 series is used to drive the pivoting member 20 to rotate.

The clamping device of the machine tool of the present invention is described in detail as follows. First, the workpiece S to be processed is placed between the pivoting members 20, and then the sliding seat 12 is driven to be fixed along the radial direction X. The seat 11 is moved until each of the pivoting members 20 grips the workpiece S, and the driving device 30 is activated, and the driving device 30 drives at least one of the pivoting members 20 to rotate, by the pivoting member being driven 20 drives the workpiece S and the other pivoting members 20 to rotate at the same time, so that the workpiece S can be stably rotated while being clamped by the pivoting members 20, and finally the workpiece S is processed by a grinding wheel L.

It can be seen from the foregoing that the clamping device of the machine tool of the present invention mainly drives the workpiece S to be processed by the pivoting members 20, and then drives the pivoting member 20 by the driving device 30 to drive the workpiece S to rotate. The workpiece S can be stably rotated while being clamped by the pivoting members 20, since the clamping device of the machine tool of the present invention is configured to hold the workpiece S by at least three pivoting members 20, and three The pivoting member 20 is configured to dynamically rotate the workpiece S so as to be able to offset the shaking to achieve a balance, so that the workpiece S is better stabilized during processing, thereby providing a method for reducing sway and reducing machining error. The purpose of the clamping device of the machine tool for improving the value of the processed product.

"Knowledge Technology"
40‧‧‧ chuck body
41‧‧‧ claws
42‧‧‧Clamping space "The invention"
10‧‧‧ body
11‧‧‧ Fixed seat
111‧‧‧ first end
112‧‧‧ second end
12‧‧‧Slip seat
20‧‧‧ pivoting parts
21‧‧‧ pivot
30‧‧‧ drive
L‧‧‧ grinding wheel
S‧‧‧Workpiece
S1‧‧‧ Center Point
X‧‧‧ radial
Y‧‧‧Vertical direction

Figure 1 is a three-jaw chuck of a conventional machine tool. Figure 2 is a perspective view of the holding device of the machine tool of the present invention. Figure 3 is a schematic view showing the operation of the holding device of the machine tool of the present invention. Figure 4 is a front elevational view of the clamping device of the machine tool of the present invention. Figure 5 is a partial enlarged view of the holding device of the machine tool of the present invention. Figure 6 is a partial enlarged view of another embodiment of the clamping device of the machine tool of the present invention. Figure 7 is a partial enlarged view of another embodiment of the clamping device of the machine tool of the present invention.

10‧‧‧ body

11‧‧‧ Fixed seat

111‧‧‧ first end

112‧‧‧ second end

12‧‧‧Slip seat

20‧‧‧ pivoting parts

21‧‧‧ pivot

L‧‧‧ grinding wheel

S‧‧‧Workpiece

Claims (7)

A clamping device for a machine tool, comprising: a body having a fixing seat and a sliding seat, the sliding seat facing the fixing seat, the sliding seat being spaced apart from the fixing seat, the fixing seat is defined a direction extending to the sliding seat is a radial direction, the fixing seat is fixed, the sliding seat can be displaced along a radial direction; at least three pivoting members are pivotally disposed on the seat body, The pivoting members respectively extend through a pivot shaft, the pivoting shaft is pivotally disposed on the base body, the pivoting members are cylindrical, and the pivoting members are configured to clamp a workpiece, and the workpiece is disposed on the plurality of pivoting members Between the pivoting members, at least one of the pivoting members is disposed on the sliding seat, at least one of the pivoting members is disposed on the fixing base; and a driving device is electrically connected to the at least one pivoting member, the driving The device is used to drive the pivoting member to rotate. The holding device of the machine tool according to claim 1, wherein the number of the pivoting members is three, the sliding seat has one pivoting member, and the fixing seat has two pivoting members. The clamping device of the machine tool of claim 2, wherein the fixing base has a first end and a second end, the first end extending to the second end is a vertical direction, The pivoting of the two pivot members of the mount is disposed along the vertical direction. The clamping device of the machine tool of claim 2, wherein the workpiece has a center point, and the pivoting line of the pivoting member of the sliding seat is identical to the center point of the workpiece Radially. The clamping device of the machine tool according to claim 1, wherein the number of the pivoting members is four, the sliding seat has two pivoting members, and the fixing seat has two pivoting members. . The clamping device of the machine tool of claim 5, wherein the fixing base has a first end and a second end, the first end extending to the second end is a vertical direction, The pivoting of the two pivoting members of the sliding seat is disposed along the vertical direction, and the pivoting of the two pivoting members of the fixing seat is disposed along the vertical direction. The clamping device of the machine tool according to claim 1, wherein the driving device is dynamically connected to the pivoting member pivoted to the sliding seat.