CN206296700U - A kind of clamp for machining - Google Patents

Abstract

The utility model relates to a processing fixture. The processing fixture includes: a fixed seat, the fixed seat has an upper surface and a lower surface, and at least two positioning pins, at least three contour columns and at least one pop-up assembly are vertically arranged on the upper surface; A positioning hole is provided on the moving seat, and the positioning pin is configured to be inserted into the positioning hole; a pressing plate assembly is configured to be able to press down the moving seat until the moving seat is in contact with the contour column , the pop-up assembly is configured to be able to provide elastic force for upward movement of the moving seat. The processing fixture provided by the utility model ensures the consistency of the height of the moving seat in the Z-axis direction by setting contour columns and a positioning structure. The pick-and-place of the mobile seat is facilitated by setting a pop-up structure.

Description

A processing jig

technical field

The utility model relates to the field of mechanical manufacturing, in particular to a processing fixture.

Background technique

In the existing mechanical manufacturing field, smaller workpieces are generally clamped on moving fixtures for processing. The mobile jig is often in direct contact with the fixed seat, which is likely to cause wear and tear on the mobile jig and is difficult to maintain. Moreover, due to the wear of the moving jig, it will be difficult to ensure the consistency of the height of the moving jig in the Z-axis direction, thus causing errors to easily occur when the machine tool is used to perform precision machining on the workpiece. In addition, after the machining of a small workpiece is completed, it is difficult to quickly take it out for the next machining.

Therefore, it is necessary to improve the existing fixtures for processing smaller workpieces to effectively solve the problem of the consistency of the height of the moving fixture in the Z-axis direction and the problem of picking and placing the moving fixture.

Utility model content

One purpose of the present utility model is to provide a processing fixture.

According to one aspect of the present utility model, a processing fixture is provided. The processing fixture includes: a fixed seat, the fixed seat has an upper surface and a lower surface, and at least two positioning pins, at least three contour columns and at least one pop-up assembly are vertically arranged on the upper surface; A positioning hole is arranged on the moving seat, and the positioning pin is configured to be inserted into the positioning hole; a pressing plate assembly is configured to be able to press down the moving seat until the moving seat is in contact with the contour column , the pop-up assembly is configured to be able to provide elastic force for upward movement of the moving seat.

Optionally, the number of the contour columns is three, and the contour columns are arranged in a triangle.

Optionally, the number of the contour columns is four, and the contour columns are arranged in a rectangle.

Optionally, the number of the contour columns is five, wherein four of the contour columns are arranged in a rectangle, and one of the contour columns is located at the center of the rectangle.

Optionally, grooves are provided on the fixing seat, the number of the grooves is equal to that of the positioning pins, and the positioning pins are arranged in the grooves.

Optionally, the number of the positioning pins is two, and the pop-up assembly is arranged on the connecting line of the two positioning pins.

Optionally, the ejection assembly includes an ejector pin and a spring. When the movable seat is in contact with the contour column, the ejector pin is in contact with the movable seat, and the spring is compressed to provide the The elastic force of the ejector pin towards the moving seat.

Optionally, a first stepped through hole is vertically provided on the fixing seat, a stopper is provided at one end of the ejector pin, and the ejector pin and the spring penetrate through the first step from bottom to top in sequence. The step through hole, the stopper abuts against the step surface of the first step through hole, and a limit block is provided on the lower surface of the fixing seat to limit the position of the ejection assembly.

Optionally, the contour column is threadedly connected to the fixing base.

Optionally, a second stepped through hole is vertically provided on the fixing base, and the contour column is put into the second stepped through hole from top to bottom and abuts against the stepped surface of the second stepped through hole , the through hole of the second step is configured to fit with the contour column, and the bottom of the contour column is provided with a threaded hole.

A technical effect of the utility model is that the consistency of the Z-axis height of the moving seat is ensured by setting the contour column and the positioning structure. Efficiency is improved by setting a pop-up structure to facilitate the pick-and-place of the mobile seat.

Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings.

Description of drawings

The accompanying drawings, which constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

Fig. 1 is a three-dimensional schematic diagram of a processing fixture in an embodiment of the present invention.

Fig. 2 is a schematic diagram of the installation of medium-high columns in the embodiment of the utility model.

Fig. 3 is a schematic diagram of the installation of the pop-up assembly in the embodiment of the utility model.

Among them, 10: fixed seat; 100: through hole of the first step; 101: through hole of the second step; 11: plate assembly; 12: moving seat; 13: positioning pin; 14: contour column; 15: ejection assembly; : ejector pin; 151: spring; 16: limit block; 17: cylinder; 18: connecting rod; 19: support seat; 20: bolt; 21: positioning hole.

detailed description

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature, and in no way serves as any limitation of the invention and its application or use.

Techniques and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques and devices should be considered part of the description.

In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have different values.

It should be noted that like numerals and letters denote like items in the following figures, therefore, once an item is defined in one figure, it does not require further discussion in subsequent figures.

The utility model provides a processing fixture, which can precisely fix a workpiece. And it is convenient to pick and place the workpiece. This processing fixture is mainly for processing smaller workpieces. For example, the processing fixture can be applied to the cutting process of a machine tool, the workpiece is clamped on the processing fixture, and a relative movement is formed between the tool and the workpiece, so that the workpiece can obtain the required surface shape and size.

As shown in FIG. 1 , the processing fixture includes a fixed seat 10 , a moving seat 12 , a pressing plate assembly 11 and a transmission assembly. Wherein the moving base 12 is provided with a clamping device for fixing the workpiece, and the workpiece is clamped on the moving base 12 so as to process the workpiece. As shown in FIG. 1 , a positioning hole 21 is provided on the moving base 12 .

As shown in FIG. 1 , the fixing seat 10 has an upper surface and a lower surface, and at least two positioning pins 13 , at least three columns 14 of equal height and at least one pop-up component 15 are vertically arranged on the upper surface. The positioning pin 13 is configured to be able to be inserted into the positioning hole 21 to achieve a guiding function. Those skilled in the art should understand that the fixed base 10 can be installed and fixed on the support base 19 of the machine tool, the surface of the fixed base 10 close to the support base 19 is the lower surface, and the upper surface is the lower surface. The opposite surface of the surface.

As shown in FIG. 1 , the pressing plate assembly 11 is located above the upper surface of the fixing seat 10 . The transmission assembly is connected to the pressing plate assembly 11 , and the transmission assembly is configured to drive the pressing plate assembly 11 to move up or down. For example, as shown in FIG. 1 , the transmission assembly may include a cylinder 17 and a connecting rod 18 . One end of the connecting rod 18 is connected to the cylinder 17 , and the other end is connected to the pressing plate assembly 11 . The cylinder 17 is configured to drive the platen assembly 11 to move up and down through the connecting rod 18 . The cylinder 17 has a cylinder switch for controlling the upward or downward movement of the pressing plate assembly 11 . Those skilled in the art should understand that "upward" in the present invention refers to the direction from the fixed seat 10 to the movable seat 12, and correspondingly, "downward" in the present invention refers to the direction from the fixed seat 10 to the movable seat 12. The moving seat 12 faces the direction of the fixed seat 10 . The fixing base 10 is a plate structure, and the fixing base 10 has a major axis direction (x axis), a minor axis direction (y axis) and a longitudinal direction (z axis) as shown in FIG. 1 .

As shown in FIG. 1 , after the workpiece is clamped by the moving base 12 , the positioning hole 21 on the moving base 12 is matched with the positioning pin 13 . Afterwards, the moving seat 12 is supported on the ejection assembly 15 . Before processing the workpiece, the pressing plate assembly 11 presses and pushes the moving base 12 to move downward until the moving base 12 abuts against the contour column 14 . At this time, the pop-up assembly 15 is deformed and compressed to provide elastic force for the moving seat 12 to move upward. After the processing of the workpiece is completed, the pressing plate assembly 11 moves upward, the moving seat 12 is separated from the contour column 14 , and the ejection assembly 15 ejects the moving seat 12 upward.

Optionally, the number of the contour columns 14 is three, and the three contour columns are arranged in a triangular shape. In this way, the contour column forms a plane, and the moving seat 12 is offset against the contour column 14, which ensures the consistency of the height of the moving seat 12 on the Z-axis.

Optionally, the number of the contour columns 14 is four, and the contour columns 14 are arranged in a rectangle. In this way, the height consistency of the moving base 12 on the Z-axis is more accurately guaranteed.

Optionally, the number of the contour columns 14 is five, wherein four of the contour columns 14 are arranged in a rectangle, and the remaining one of the contour columns 14 is located at the center of the rectangle. In this way, the uniform stress on the contour columns 14 is ensured.

Optionally, grooves are provided on the fixing seat 10 . The number of the grooves is equal to that of the positioning pins 13 . The positioning pin 13 is arranged in the groove. The positioning pin 13 can be placed in the groove, and the positioning pin 13 is an interference fit with the groove. The positioning pin 13 can also be fixedly installed in the groove.

Optionally, the number of the positioning pins 13 is two. Correspondingly, in order to eject the moving seat 12 better, the ejection assembly 15 is arranged on the connecting line between the two positions. Those skilled in the art should understand that two positioning pins 13 can meet the positioning requirements, but the present invention does not limit the number of positioning pins to only two.

Preferably, as shown in FIG. 2 , the ejection assembly 15 includes an ejection pin 150 and a spring 151 . When the pressing plate assembly 11 presses down on the movable base 12 until the movable base 12 abuts against the contour column 14 , the ejector pin 150 directly abuts against the lower surface of the movable base 12 . At this time, the spring 151 is compressed and provides an elastic force for the ejector pin 150 toward the moving seat 12 . The ejector pin 150 is located between the movable base 12 and the spring 151 , and one end of the spring 151 can be connected to the ejector pin 150 , or just be against the ejector pin 150 . The other end of the spring 151 can be connected or limited on the fixing base 10 , and can also be connected or limited in a through hole or a groove of the fixing base 10 .

Further, as shown in FIG. 2 , a first stepped through hole 100 is vertically provided on the fixing seat. The first stepped through hole 100 has a stepped surface. The ejector pin 150 and the spring 151 pass through the first stepped through hole 100 sequentially from bottom to top. An end of the ejector pin 150 close to the spring 151 is provided with a stopper, and the stopper is against the stepped surface. In this way, the elastic force provided by the spring 151 is prevented from directly ejecting the ejector pin 150 . A limiting block 16 is provided on the lower surface of the fixing seat 10 to limit the ejection assembly 15 . The limiting block 16 can be threadedly connected to the lower surface of the fixing base 10 .

Preferably, the contour column 14 is installed on the fixing seat 10 through a threaded connection. In this way, the contour column 14 is detachably connected to the fixing base 10 , and if the contour column 14 wears out after a long period of use, only a single contour column can be replaced, which reduces the maintenance cost.

Further, as shown in FIG. 3 , a second stepped through hole 101 is vertically provided on the fixing seat. When the contour column 14 was put into the second step through hole 101 from top to bottom, the bottom of the contour column 14 could be against the step surface of the second step through hole 101, and the contour The post 14 can match the second stepped through hole 101 . Threaded holes are provided at the bottom of the contour column 14 , and matching bolts are provided below the contour column 14 to fix the contour column 14 . Those skilled in the art should understand that the second stepped through hole 101 may have two stepped surfaces, the bottom of the contour column 14 is against the upper stepped surface of the second stepped through hole 101 , the The screw rod of the bolt abuts against the lower surface of the step; the second stepped through hole 101 may also have only one stepped surface, and at this time, the screw rod of the bolt abuts against the lower surface of the fixing seat 10 .

Although some specific embodiments of the present utility model have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, rather than limiting the scope of the present utility model. Those skilled in the art will appreciate that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (10)

1. a kind of clamp for machining, it is characterised in that including：

Fixed seat (10), the fixed seat (10) is vertically installed with least two with upper and lower surface in the upper surface Individual alignment pin (13), at least three contour posts (14) and at least one ejection component (15)；

Mobile base (12), is provided with location hole (21) on the Mobile base (12), and the alignment pin (13) is configured to insert Enter the location hole (21)；

Anchor plate kit (11), the Anchor plate kit (11) is configured to push the Mobile base (12) to the Mobile base (12) Offseted with the contour post (14), ejection component (15) is configured to provide motion upwards for the Mobile base (12) Elastic force.

2. clamp for machining according to claim 1, it is characterised in that the quantity of the contour post (14) is three, described Contour post (14) arrangement triangularity.

3. clamp for machining according to claim 1, it is characterised in that the quantity of the contour post (14) is four, described Contour post (14) arrangement rectangularity.

4. clamp for machining according to claim 1, it is characterised in that the quantity of the contour post (14) is five, wherein Four contour post (14) arrangement rectangularities, a contour post (14) is positioned at the rectangular center.

5. clamp for machining according to claim 1, it is characterised in that the fixed seat (10) is provided with groove, described recessed Groove is equal with the quantity of the alignment pin (13), and the alignment pin (13) is arranged in the groove.

6. clamp for machining according to claim 1, it is characterised in that the quantity of the alignment pin (13) is two, described Ejection component (15) is arranged on two lines of the alignment pin (13).

7. clamp for machining according to claim 1, it is characterised in that the ejection component (15) includes playing ejector pin (150) With spring (151), when the Mobile base (12) offsets with the contour post (14), the bullet ejector pin (150) and the movement Seat (12) offsets, and the spring (151) is compressed to be supplied to elasticity of bullet ejector pin (150) towards the Mobile base (12) Power.

8. clamp for machining according to claim 7, it is characterised in that be vertically installed with first in the fixed seat (10) Step through-hole (100), described one end for playing ejector pin (150) is provided with block, the bullet ejector pin (150) and the spring (151) according to It is secondary to penetrate the first step through hole (100) from bottom to top, the step surface phase of the block and the first step through hole (100) Support, limited block (16) is provided with spacing to ejection component (15) in the lower surface of the fixed seat (10).

9. clamp for machining according to claim 1, it is characterised in that the contour post (14) is threaded in the fixation On seat (10).

10. clamp for machining according to claim 9, it is characterised in that second is vertically installed with the fixed seat Rank through hole (101), the contour post (14) is put into the second step through hole (101) and leads to the second step from top to bottom The step surface in hole (101) offsets, and the second step through hole (101) is configured to coordinate with the contour post (14), described etc. The bottom of Gao Zhu (14) is provided with screwed hole.