Jig for grinding flatness of special-shaped part

Abstract

The utility model discloses a special-shaped piece flatness grinding jig which structurally comprises a ring body, and the ring body is provided with a first water channel opening, a second water channel opening and a plurality of connecting openings used for installing screws. The lower end face of the ring body is provided with a first connecting column, a second connecting column and a third connecting column which are communicated with the first water channel opening, the second water channel opening and the connecting opening respectively. The jig comprises a base, an annular convex edge is arranged on the base, and a first positioning groove corresponding to the first connecting column, a second positioning groove corresponding to the second connecting column and a plurality of third positioning grooves corresponding to the third connecting columns are formed in the annular convex edge. According to the special-shaped part grinding device, each connecting column of a special-shaped part can be correspondingly placed in each positioning groove of the base, and the base is matched with the lower end of the special-shaped part, so that the special-shaped part is stably placed, and higher precision can be obtained after grinding; and the clamp is wound outside the annular convex edge, so that the special-shaped part is more stable during surface grinding, and the grinding precision is higher.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixture development, and particularly relates to a fixture for grinding the flatness of special-shaped parts. Background Art

[0002] There is a current special-shaped part 1, whose structure is shown in Attachment Figure 1 and Attachment Figure 2 and includes an annular body 101. The annular body 101 is provided with a first waterway port, a second waterway port and several connection ports for installing screws. The lower end surface of the annular body 101 is provided with a first connection column 102, a second connection column 103 and a third connection column 104 that are respectively communicated with the first waterway port, the second waterway port and the connection ports. The first connection column 102 and the second connection column 103 are located on different sides of the annular body 101, and the heights of the first connection column 102, the second connection column 103 and the third connection column 104 are not completely equal.

[0003] Currently, it is necessary to grind the surface flatness of the special-shaped part 1. The traditional method usually uses screws to fix the special-shaped part to an assembly fixture, and then uses a turntable grinder to process and grind its surface. After completion, the screws are disassembled, and the measured surface flatness is usually about 20 μm, and the flatness is too large to meet the precision requirement of the flatness < 10 μm required by the process.

[0004] Therefore, a fixture for grinding the flatness of special-shaped parts is designed to solve the above problems.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely explaining the technical solution of the present utility model and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well-known to those skilled in the art just because these solutions are described in the background art part of the present utility model. Summary of the Utility Model

[0006] To overcome the above deficiencies in the prior art, the purpose of the present utility model is to provide a fixture for grinding the flatness of special-shaped parts.

[0007] To achieve the above purpose and other related purposes, the technical solution provided by the present utility model is:

[0008] A fixture for grinding the flatness of a special-shaped part. The structure of the special-shaped part includes a ring body. The ring body is provided with a first water channel port, a second water channel port, and a plurality of connection ports for installing screws. The lower end surface of the ring body is provided with a first connection column, a second connection column, and a third connection column that are respectively communicated with the first water channel port, the second water channel port, and the connection ports. The first connection column and the second connection column are located on different sides of the ring body, and the heights of the first connection column, the second connection column, and the third connection column are not completely equal. The fixture includes:

[0009] A base, on which a circular convex edge is provided. The circular convex edge is provided with a first positioning groove corresponding to the first connection column, a second positioning groove corresponding to the second connection column, and a plurality of third positioning grooves corresponding to each of the third connection columns.

[0010] In this solution, each connection column of the special-shaped part is respectively placed in each positioning groove of the base. The base is matched with the lower end of the special-shaped part, so that the special-shaped part can be placed stably, and the surface of the special-shaped part can be kept stable during grinding, and higher precision can be obtained after grinding.

[0011] Further, the depths of the first positioning groove, the second positioning groove, and the third positioning groove are respectively and correspondingly matched with the heights of the first connection column, the second connection column, and the third connection column, so that each position of the lower end surface of the ring body is in contact with the upper end surface of the circular convex edge. In this solution, the connection column and the positioning groove are correspondingly and matched, which can make the special-shaped part and the base perfectly matched and more stable.

[0012] Further, the base is disc-shaped, and the circular convex edge is arranged on the edge of the base. In this solution, the disc-shaped base is correspondingly arranged with the ring body structure of the special-shaped part, which is convenient for matching.

[0013] Further, the fixture further includes a clamp, and the clamp is wound around the outside of the circular convex edge. In this solution, by using the clamp to wind around the outside of the circular convex edge, a clamping effect can be achieved, so that the special-shaped part can be more stable during surface grinding and the grinding precision is higher.

[0014] Further, the clamp includes at least two clamping blocks. In this solution, each clamping block is evenly distributed around the base during clamping, ensuring uniform force on the base, improving the overall stability, and thus improving the grinding precision.

[0015] Further, the side surface of the clamping block relative to the circular convex edge is an arc surface. In this solution, the arc surface of the clamping block fits more closely with the circular convex edge, which can ensure a completely fitting state during clamping, and thus ensure the grinding precision.

[0016] Further, a retaining edge corresponding to the annular convex edge is provided on the inner edge of the clamping block. In this solution, the retaining plate is provided to better clamp the special-shaped part, improve the overall stability, and thus improve the grinding accuracy.

[0017] Further, the height of the retaining edge is greater than the height of the annular convex edge. In this solution, the height of the retaining edge being greater than the height of the annular convex edge can play a better clamping role, making the clamping more stable and improving the grinding accuracy.

[0018] Further, the retaining edge and the clamping block are integrally provided. In this solution, the retaining edge and the clamping block are integrally formed, with stable structure and convenient processing.

[0019] Further, the center of the fixture coincides with the center of the annular protrusion. In this solution, the coincidence of the center of the fixture and the center of the annular protrusion ensures the structural stability and also ensures that the fixture can be in a completely fitting state when clamping.

[0020] Due to the application of the above technical solution, the beneficial effects of the present utility model compared with the prior art are as follows:

[0021] The fixture for grinding the flatness of the special-shaped part designed by the present utility model can respectively place the respective connecting columns of the special-shaped part in the respective positioning grooves of the base. The base is provided in a matching manner with the lower end of the special-shaped part, enabling the special-shaped part to be placed stably, and higher precision can be obtained after grinding; by winding the fixture around the outside of the annular convex edge, a clamping effect can be achieved, making the special-shaped part more stable during surface grinding and having higher grinding accuracy, so as to meet the accuracy requirement of the flatness < 10 μm required by the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional schematic diagram of the structure of the special-shaped part of the present utility model;

[0023] Figure 2 is a front view schematic diagram of the structure of the special-shaped part of the present utility model;

[0024] Figure 3 is a schematic diagram of the structure of the base of the present utility model;

[0025] Figure 4 is a schematic diagram of the structure of the base and the fixture of the present utility model;

[0026] Figure 5 is a schematic diagram of the structure of the clamping block of the present utility model;

[0027] Figure 6 is a schematic diagram of the assembly structure of the special-shaped part and the fixture of the present utility model;

[0028] In the above drawings, 1 is a special-shaped part; 101 is an annular body; 102 is a first connecting column; 103 is a second connecting column; 104 is a third connecting column; 2 is a base; 201 is an annular convex edge; 202 is a first positioning groove; 203 is a second positioning groove; 204 is a third positioning groove; 3 is a fixture; 301 is a clamping block; 302 is a retaining edge. Detailed implementation manners

[0029] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0030] It should be noted that in the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is usually placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance. The terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0033] The following elaborates on the preferred embodiments of the present utility model in conjunction with the drawings, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model.

[0034] Embodiment 1: Refer to the attached Figure 1 and the attached Figure 3 As shown, this embodiment provides a fixture for grinding the flatness of a special-shaped part. The structure of the special-shaped part 1 includes an annular body 101. The annular body 101 is provided with a first water channel opening, a second water channel opening, and several connection openings for installing screws. The lower end surface of the annular body 101 is provided with a first connecting column 102, a second connecting column 103, and a third connecting column 104 that are respectively communicated with the first water channel opening, the second water channel opening, and the connection openings. The first connecting column 102 and the second connecting column 103 are located on different sides of the annular body 101, and the heights of the first connecting column 102, the second connecting column 103, and the third connecting column 104 are not completely equal. This fixture includes:

[0035] A base 2, on which a circular convex edge 201 is provided. The circular convex edge 201 is provided with a first positioning groove 202 corresponding to the first connecting column 102, a second positioning groove 203 corresponding to the second connecting column 103, and several third positioning grooves 204 corresponding to each third connecting column 104.

[0036] In this embodiment, each connecting column of the special-shaped part 1 is respectively placed in each positioning groove of the base 2. The base 2 is provided in a matching manner with the lower end of the special-shaped part 1, so that the special-shaped part 1 can be placed stably, ensuring that the surface of the special-shaped part 1 remains stable during grinding and obtaining higher precision after grinding.

[0037] Embodiment 2: Refer to the attached Figure 3 and the attached Figure 6As shown in the figure, this embodiment is a further improvement based on Embodiment 1, and the specific method is as follows: The depths of the first positioning groove 202, the second positioning groove 203, and the third positioning groove 204 are respectively corresponding and matched with the heights of the first connecting column 102, the second connecting column 103, and the third connecting column 104, so that the lower end surface of the ring body 101 is in contact with each position of the upper end surface of the annular convex edge 201. Among them, the corresponding and matching setting means that: if the height of the connecting column is large, it is matched with a positioning groove with a large depth; if the height of the connecting column is small, it is matched with a positioning groove with a small depth. In this embodiment, by correspondingly and matching the connecting column with the positioning groove, the special-shaped part 1 can be perfectly matched with the base 2, making it more stable.

[0038] Embodiment 3: Refer to the appendix Figure 3 As shown in the figure, this embodiment is a further improvement based on Embodiment 1, and the specific method is as follows: The base 2 is disc-shaped, and the annular convex edge 201 is arranged on the edge of the base 2. In this embodiment, the disc-shaped base 2 is correspondingly arranged with the ring body 101 structure of the special-shaped part 1, which is convenient for matching.

[0039] Embodiment 4: Refer to the appendix Figure 4 and the appendix Figure 6 As shown in the figure, this embodiment is a further improvement based on Embodiment 1, and the specific method is as follows: The jig further includes a fixture 3, and the fixture 3 is wound around the outside of the annular convex edge 201. In this embodiment, by using the fixture 3 to wind around the outside of the annular convex edge 201, a clamping effect can be achieved, making the special-shaped part 1 more stable during surface grinding and having a higher grinding accuracy.

[0040] Embodiment 5: Refer to the appendix Figure 4 As shown in the figure, this embodiment is a further improvement based on Embodiment 4, and the specific method is as follows: The fixture 3 includes at least two clamping blocks 301. The number of clamping blocks 301 can be two, three or more. In this embodiment, each clamping block 301 is evenly distributed around the base 2 during clamping, ensuring uniform force on the base 2, improving the overall stability, and thus improving the grinding accuracy.

[0041] Embodiment 6: Refer to the appendix Figure 5 As shown in the figure, this embodiment is a further improvement based on Embodiment 5, and the specific method is as follows: The side surface of the clamping block 301 relative to the annular convex edge 201 is an arc surface. In this embodiment, by setting the arc surface on the clamping block 301, it can fit more closely with the annular convex edge 201, ensuring a completely fitting state during clamping, and thus ensuring the grinding accuracy.

[0042] Embodiment 7: Refer to the appendix Figure 5As shown, this embodiment is a further improvement on the basis of the sixth embodiment, and its specific method is: the inner edge of the clamping block 301 is provided with a retaining edge 302 corresponding to the annular convex edge 201. In this embodiment, the baffle can better clamp the special-shaped part 1, improve the overall stability, and thus improve the grinding accuracy.

[0043] Embodiment 8: See attached Figure 5 and attached Figure 6 As shown, this embodiment is a further improvement on the basis of the seventh embodiment, and its specific manner is: the height of the rib 302 is greater than the height of the annular convex edge 201. Among them, the height of the rib 302 is less than the placement height of the special-shaped member 1 on the base 2. In this embodiment, the height of the rib 302 is greater than the height of the annular convex edge 201, which can play a better clamping role, make the clamping more stable, and improve the grinding accuracy.

[0044] Embodiment 9: See attached Figure 5 As shown, this embodiment is a further improvement on the basis of the eighth embodiment, and its specific method is: the retaining edge 302 and the clamping block 301 are integrally arranged. In this embodiment, the retaining edge 302 and the clamping block 301 are integrally formed, and the structure is stable and easy to process.

[0045] Embodiment 10: See attached Figure 4 As shown, this embodiment is a further improvement on the basis of the fourth embodiment, and its specific method is: the center of the clamp 3 is arranged to coincide with the center of the annular protrusion. In this embodiment, the center of the clamp 3 coincides with the center of the annular protrusion, which ensures the stability of the structure and also ensures that the clamp 3 can be in a completely fitted state when clamping.

[0046] The jig for flatness grinding of special-shaped parts designed by the utility model can place the various connecting columns of the special-shaped parts in the respective positioning grooves of the base respectively, and the base is matched with the lower end of the special-shaped parts so that the special-shaped parts can be placed stably and higher precision can be obtained after grinding; the clamp is arranged around the outside of the annular convex edge to play a clamping role, so that the special-shaped parts can be more stable during surface grinding and the grinding precision is higher, thereby achieving the precision requirement of flatness <10μm required in the process.

[0047] The above implementation modes are only for illustrating the technical concept and features of the utility model, and their purpose is to allow people familiar with this technology to understand the content of the utility model and implement it. It cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A fixture for grinding the flatness of a special-shaped part. The structure of the special-shaped part (1) includes an annular body (101). The annular body (101) is provided with a first water channel port, a second water channel port, and a plurality of connection ports for installing screws. The lower end surface of the annular body (101) is provided with a first connection column (102), a second connection column (103), and a third connection column (104) that are respectively communicated with the first water channel port, the second water channel port, and the connection ports. The first connection column (102) and the second connection column (103) are located on different sides of the annular body (101). The heights of the first connection column (102), the second connection column (103), and the third connection column (104) are not completely equal. It is characterized in that: The jig includes: A base (2), on which a ring-shaped convex edge (201) is provided. A first positioning groove (202) corresponding to the first connecting column (102), a second positioning groove (203) corresponding to the second connecting column (103), and a plurality of third positioning grooves (204) corresponding to each of the third connecting columns (104) are formed on the ring-shaped convex edge (201).

2. The fixture for grinding the flatness of a special-shaped part according to claim 1, characterized in that: The depths of the first positioning groove (202), the second positioning groove (203), and the third positioning groove (204) are respectively set to correspond and match the heights of the first connecting column (102), the second connecting column (103), and the third connecting column (104), so that the lower end surface of the ring body (101) is in contact with each position of the upper end surface of the ring-shaped convex edge (201).

3. A fixture for grinding the flatness of a special-shaped part according to claim 1, characterized in that: The base (2) is disc-shaped, and the ring-shaped convex edge (201) is provided at the edge of the base (2).

4. A fixture for grinding the flatness of a special-shaped part according to claim 1, characterized in that: The jig further includes a fixture (3) that is wound around the outside of the ring-shaped convex edge (201).

5. A fixture for grinding the flatness of a special-shaped part according to claim 4, characterized in that: The fixture (3) includes at least two clamping blocks (301).

6. The fixture for grinding the flatness of a special-shaped part according to claim 5, wherein: The side surface of the clamping block (301) relative to the ring-shaped convex edge (201) is an arc surface.

7. The fixture for grinding the flatness of a special-shaped part according to claim 6, characterized in that: A retaining edge (302) corresponding to the ring-shaped convex edge (201) is provided at the inner edge of the clamping block (301).

8. A fixture for grinding the flatness of a special-shaped part according to claim 7, characterized in that: The height of the retaining edge (302) is greater than the height of the ring-shaped convex edge (201).

9. The fixture for grinding the flatness of a special-shaped part according to claim 8, wherein: The retaining edge (302) is integrally provided with the clamping block (301).

10. A fixture for grinding the flatness of a special-shaped part according to claim 4, characterized in that: The center of the fixture (3) coincides with the center of the ring-shaped convex edge (201).

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