Clamp for workpiece polishing

Abstract

The utility model discloses a fixture for polishing a workpiece. The fixture comprises a placing table, four mounting parts and four positioning strips, a workpiece is placed in the placing area, the position of the end face corresponding to the second end in the placing area is adjusted by sliding along the kidney-shaped through groove and adjusting the fixing positions of the four positioning strips on the corresponding installation parts around the first connecting point, and the end face abuts against the workpiece. The end face and the workpiece can be in surface contact, line contact or point contact. The four end faces abut against the workpiece, the placing table supports the workpiece, the workpiece is fixed, and the grinding wheel can stably grind the workpiece. The device has the beneficial effects that the adjusting range is smaller, and the device can better adapt to different workpieces.

Description

Technical Field

[0001] The utility model relates to grinding processing, in particular to a fixture for grinding a workpiece. Background Art

[0002] Grinding the surface of a workpiece is a common process, generally to improve the accuracy of the workpiece surface. Grinding generally uses grinding wheels, grinding belts, etc. The workpiece needs to be fixed while grinding, and a clamp is generally used to fix the workpiece. Existing clamps are generally two pairs of limit blocks on the placement table, one pair of limit blocks slides longitudinally and can be relatively fixed to the placement table, and the other pair of limit blocks slides transversely and can be relatively fixed to the placement table. The workpiece is placed on the placement table, and the two sets of limit blocks are used to support and fix the workpiece longitudinally and transversely. However, because the two pairs of limit blocks can only adjust the position longitudinally and transversely respectively, the adjustment range is small, and the workpiece has a variety of external dimensions, resulting in the existing clamps being unable to adapt well, and the workpiece is prone to being unstable. Utility Model Content

[0003] The present application provides a fixture for grinding a workpiece, which can solve the problems raised in the background technology.

[0004] In this application, a fixture for grinding a workpiece is provided, comprising

[0005] Placement table, the middle position is the placement area;

[0006] Four mounting parts are all fixedly connected to the placement platform and are respectively located around the placement area;

[0007] The four positioning strips are each provided with a waist-shaped through groove at the first end, which is fixedly connected to the first connection points of the four mounting parts respectively. Each positioning strip can also slide along the waist-shaped through groove and rotate around the first connection point to adjust to the fixed position of the corresponding mounting part; the second end faces the placement area, and the end face is a plane.

[0008] Furthermore, it also includes a plurality of positioning columns with different diameters. The placement platform is provided with at least one second connection point on the placement area, and the plurality of positioning columns can be detachably fixedly connected to the second connection point.

[0009] Furthermore, it also includes a positioning block, and there are at least two second connection points. The positioning block is detachably fixedly connected to all the second connection points.

[0010] Furthermore, the bottom surface of the positioning block is provided with sockets having the same number as the second connection points, and these sockets can be matched with one of the plurality of positioning posts without duplication.

[0011] Furthermore, the four mounting parts can all be adjusted up and down to their fixed positions on the placement table.

[0012] Furthermore, the placement area of the placement table and the four mounting portions are raised relative to the remaining area of the placement table.

[0013] In summary, in the present application, a fixture for grinding a workpiece includes a placement table, four mounting parts and four positioning bars. The workpiece is placed in the placement area, and the fixed positions of the four positioning bars on the corresponding mounting parts are adjusted by sliding along the waist-shaped through groove and around the first connection point, thereby adjusting the position of the end face corresponding to the second end in the placement area so that the end face is against the workpiece. The end face and the workpiece can be in surface contact, line contact or point contact. The workpiece is fixed by the four end faces against the workpiece and supported by the placement table, so that the grinding wheel can grind the workpiece stably. The beneficial effects are: the adjustment range is smaller and it can better adapt to different workpieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0015] Figure 1 This is a schematic diagram of the structure of this utility;

[0016] Figure 2 This is a schematic diagram of the structure of the present invention after adding the positioning column;

[0017] Figure 3 is a schematic diagram of a nut as a second connection point;

[0018] Figure 4 This is a schematic diagram of the structure of the present invention after adding the positioning block;

[0019] Figure 5 This is a schematic diagram showing that the mounting portion can be adjusted up and down.

[0020] In the figure,

[0021] 1. Placement table; 1a. Placement area; 1b. Groove; 1c. Optical axis; 1d. Connecting block;

[0022] 2. Mounting portion; 2a. Second threaded rod;

[0023] 3. Positioning strip; 3a. Waist-shaped through groove; 3b. End face;

[0024] 4. Positioning column;

[0025] 5. Positioning block; 5a. Socket;

[0026] 6. First bolt;

[0027] 7. Nut. DETAILED DESCRIPTION

[0028] The following is further explained in conjunction with the accompanying drawings. Unless otherwise defined, the technical terms or scientific terms used in this disclosure should have the usual meanings understood by people with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0029] See also Figure 1 A fixture for grinding a workpiece includes a placement table 1, four mounting parts 2 and four positioning bars 3.

[0030] The middle of the placement table 1 is a placement area 1a, which is used for placing a workpiece. When grinding the surface of the workpiece, the grinding wheel applies force to the workpiece to push down against the placement table 1.

[0031] The four mounting portions 2 are all fixedly connected to the placement table 1, for example, they can be integrally provided on the placement table 1. The four mounting portions 2 are also respectively located around the placement area 1a, for example, they can correspond to the four corners of the placement area 1a.

[0032] The first ends of the four positioning bars 3 are each provided with a waist-shaped through groove 3a. The first ends of the four positioning bars 3 are also fixedly connected to the first connection points of the four mounting parts 2, respectively. In addition, for each positioning bar 3, it can be slidably adjusted along the waist-shaped through groove 3a to a fixed position of the corresponding mounting part 2, and can also be rotated around the first connection point to adjust to a fixed position of the corresponding mounting part 2. Specifically, a first bolt 6 can be used to pass through the waist-shaped through groove 3a through the positioning bar 3 and be threadedly connected to the connection part. When the first bolt 6 is loosened, the positioning bar 3 can be slid along the waist-shaped through groove 3a, and the positioning bar 3 can also be rotated around the first connection point; when the first bolt 6 is tightened, the positioning bar 3 is relatively fixedly connected to the mounting part 2.

[0033] The second ends of the four positioning strips 3 face the placement area 1 a , and the end surfaces 3 b corresponding to the second ends are plane.

[0034] In this way, the workpiece is placed in the placement area 1a. By sliding along the waist-shaped through-slot 3a and adjusting the fixed position of the four positioning bars 3 on the corresponding mounting portion 2 around the first connection point, the position of the end surface 3b corresponding to the second end is adjusted within the placement area 1a, so that the end surface 3b contacts the workpiece. The contact between the end surface 3b and the workpiece can be surface contact, line contact, or point contact. With the four end surfaces 3b pressed against the workpiece and supported by the placement table 1, the workpiece is fixed, allowing the grinding wheel to grind the workpiece stably.

[0035] Optionally, the placement area 1a of the placement platform 1 and the four mounting portions 2 are raised relative to the remaining area of the placement platform 1. The portion of the positioning strip 3 between the placement platform 1 and the mounting portions 2 is relatively free, making it more convenient to adjust the placement.

[0036] See also Figure 2 Optionally, the workpiece grinding fixture further includes multiple positioning posts 4 of varying diameters. The placement platform 1 is provided with at least one second connection point on the placement area 1a, to which the multiple positioning posts 4 are removably fixedly connected. Specifically, the second connection point may be a threaded hole, and each positioning post 4 has a first threaded rod at the first end that matches the threaded hole.

[0037] Thus, for a workpiece with a hole, a suitable hole position can be selected, and a positioning post 4 of a matching diameter can be fixedly connected to the placement table 1. When the workpiece is placed on the placement table 1, the hole position and the positioning post 4 can be matched to improve the stability of the workpiece fixation. For a workpiece without a hole, the positioning post 4 can be removed without affecting its placement on the placement table 1.

[0038] See also Figure 2 and Figure 3 In addition, the position of the second connection point on the placement platform 1 can be adjusted. Specifically, the placement platform 1 can be provided with a convex groove 1b. The grooves 1b can be one or more in the longitudinal direction, one or more in the transverse direction, or staggered in the longitudinal and transverse directions. A nut 7 slides in the groove 1b. The nut 7 is the second connection point for the first threaded rod of the positioning column 4 to be threadedly connected.

[0039] See also Figure 4 Furthermore, the workpiece grinding fixture further includes a positioning block 5, and the second connection points are at least two. The positioning block 5 is detachably fixedly connected to all of the second connection points. For example, a stepped through hole can be provided on the positioning block 5, and the positioning block 5 can be fixedly connected to the second connection point using a second bolt.

[0040] In this way, for some workpieces with recessed cavities, the shape of the positioning block 5 matches the shape of the recessed cavity, the positioning block 5 is fixedly connected to the placement table 1, and the workpiece is placed on the placement table 1 while the recessed cavity cover is attached to the positioning block 5.

[0041] Furthermore, the bottom surface of the positioning block 5 is provided with the same number of sockets 5a as the second connection point. Each of these sockets 5a can be uniquely matched to one of the multiple positioning posts 4. This allows the positioning posts 4 that can be selected and fixedly connected to the placement platform 1, and the positioning block 5 can be plugged into these positioning posts 4. Compared to using a second bolt, the connection between the positioning block 5 and the placement platform 1 is more convenient and quick.

[0042] See also Figure 5 Optionally, the mounting portion 2 can also be adjusted vertically relative to its fixed position on the placement platform 1. Specifically, each mounting portion 2 has a set of optical axes 1c fixedly connected to the bottom surface of the placement platform 1. The mounting portion 2 is slidably connected to this set of optical axes 1c. A connecting block 1d is also fixedly connected to the end of this set of optical axes 1c away from the placement platform 1. A second threaded rod 2a is rotatably connected to the bottom surface of the mounting portion 2, and a lead screw nut 7 that cooperates with the second threaded rod 2a is fixedly connected to the connecting block 1d. In this way, the position of the positioning bar 3 relative to the workpiece can be adjusted vertically.

Claims

1. A fixture for grinding a workpiece, characterized in that: include A placement table (1), wherein the middle position is a placement area (1a); Four mounting parts (2) are all fixedly connected to the placement platform (1) and are respectively located around the placement area (1a); The four positioning bars (3) are each provided with a waist-shaped through groove (3a) at the first end and are respectively fixedly connected to the first connection points of the four mounting parts (2); each positioning bar (3) can also slide along the waist-shaped through groove (3a) and rotate around the first connection point to be adjusted to a fixed position of the corresponding mounting part (2); the second end faces the placement area (1a), and the end surface (3b) is a plane.

2. A fixture for grinding a workpiece according to claim 1, characterized in that: It also includes a plurality of positioning columns (4) with different diameters. The placement platform (1) is provided with at least one second connection point on the placement area (1a), and the plurality of positioning columns (4) can be detachably fixedly connected to the second connection point.

3. A fixture for grinding a workpiece according to claim 2, characterized in that: It also includes a positioning block (5), and there are at least two second connection points. The positioning block (5) is detachably fixedly connected to all the second connection points.

4. A fixture for grinding a workpiece according to claim 3, characterized in that: The bottom surface of the positioning block (5) is provided with sockets (5a) having the same number as the second connection point, and these sockets (5a) can be matched with one of the plurality of positioning posts (4) without duplication.

5. A fixture for grinding a workpiece according to claim 1, characterized in that: The four mounting parts (2) can also be adjusted up and down to a fixed position on the placement platform (1).

6. A fixture for grinding a workpiece according to claim 1, characterized in that: The placement area (1a) of the placement platform (1) and the four mounting portions (2) are convex relative to the remaining area of the placement platform (1).

Images