Hole grinding clamp

Abstract

The utility model relates to a hole grinding clamp which is characterized in that the clamp is a Morse taper shank, external threads are arranged on the side face of one end of the clamp, and two threaded holes are symmetrically formed in one end of the clamp; a positioning hole is formed in the center position of the positioning plate, the positioning hole is used for placing a workpiece to be machined, two first through holes are symmetrically formed in the positioning plate, and bolts sequentially penetrate through the first through holes and the threaded holes and fixedly connect the positioning plate with the clamp; the locking nut is provided with a limiting hole corresponding to the machined part, the locking nut is in threaded connection with the external thread at one end of the clamp, and the machined part is limited in the positioning hole. For different special-shaped workpieces, the corresponding positioning plates can be replaced for placing the workpieces to be machined, and then hole grinding machining is carried out.

Description

Technical Field

[0001] The utility model relates to the technical field of processing equipment; specifically, the utility model relates to a hole grinding fixture. Background Art

[0002] In the hole grinding process of special-shaped products, the conventional fixture cannot be firmly fixed due to the irregular contour or special shape of the special-shaped products. This may cause instability and deformation during the processing, affecting the processing quality. Utility Model Content

[0003] The purpose of the utility model is to provide a hole grinding fixture, which can solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a hole grinding fixture, wherein the hole grinding fixture comprises:

[0005] A clamp, wherein the clamp is a Morse taper handle, an external thread is provided on the side surface of one end of the clamp, and two threaded holes are symmetrically provided on one end of the clamp;

[0006] A positioning plate, wherein a positioning hole is provided at the center of the positioning plate, the positioning hole is used to place the workpiece, and two first through holes are symmetrically provided on the positioning plate, and bolts pass through the first through holes and the threaded holes in sequence to fix the positioning plate and the fixture;

[0007] A locking nut, wherein a limiting hole is provided on the locking nut corresponding to the workpiece, and the locking nut is threadedly connected to the external thread at one end of the clamp, and limits the workpiece in the positioning hole.

[0008] In the hole grinding fixture as described above, optionally, a connecting hole is provided at the other end of the fixture, and a first internal thread is provided on the inner wall of the connecting hole for threaded connection with the output shaft of the machine tool.

[0009] In the aforementioned hole grinding fixture, optionally, a second through hole is provided at the center of the fixture.

[0010] In the hole grinding fixture as described above, optionally, two third through holes are symmetrically opened on the positioning plate, and two fourth through holes are symmetrically opened on the fixture, one end of the cylindrical locating pin is located in the third through hole, and the other end of the cylindrical locating pin is located in the fourth through hole, a counterweight push rod is arranged in the fourth through hole, and a second internal thread is opened on the inner wall of the fourth through hole away from the positioning plate end, and is used for threaded connection with the counterweight bolt.

[0011] In the hole grinding fixture as described above, optionally, a runout measurement groove is provided on the side wall of the fixture near the external thread.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] According to the hole grinding fixture of the utility model, the positioning plate is installed at one end of the fixture, the workpiece is placed in the positioning hole of the positioning plate, and the workpiece is fixed in the positioning hole by a locking nut. External processing equipment can perform hole grinding on the workpiece through the limiting hole of the locking nut. For different special-shaped workpieces, the corresponding positioning plate can be replaced to place the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the hole grinding fixture of the utility model;

[0015] Figure 2 It is a three-dimensional diagram of the hole grinding fixture of the utility model;

[0016] Figure 3 It is an exploded view of the hole grinding fixture of the utility model;

[0017] Figure 4 It is a cross-sectional view of the hole grinding fixture of the utility model.

[0018] In the figure: 1. clamp; 2. positioning plate; 3. locking nut; 4. threaded hole; 5. runout measurement groove; 6. workpiece; 7. first through hole; 8. bolt; 9. limit hole; 10. connecting hole; 11. second through hole; 12. third through hole; 13. cylindrical locating pin; 14. counterweight push rod; 15. counterweight bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside" and "outside" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. The terms "first", "second" and similar words used in the description of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components, and therefore cannot be understood as limitations on the present invention.

[0021] Furthermore, it should be understood that for the sake of ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0022] It should be noted that like reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not require further detailed discussion and description in the description of the subsequent drawings.

[0023] Figure 4 It is a cross-sectional view of the hole grinding fixture 1 of the utility model. The fixture 1, the positioning plate 2 and the locking nut 3 are shown in the figure.

[0024] like Figure 1-4 As shown, the fixture 1 is a Morse taper handle, and an external thread is provided on the side of one end of the fixture 1, and two threaded holes 4 are symmetrically provided on one end of the fixture 1. A positioning hole is provided at the center of the positioning plate 2, and the positioning hole is used to place the workpiece 6. Two first through holes 7 are symmetrically provided on the positioning plate 2, and bolts 8 pass through the first through holes 7 and the threaded holes 4 in sequence, and fix the positioning plate 2 and the fixture 1. A limiting hole 9 is provided on the locking nut 3 corresponding to the workpiece 6, and the locking nut 3 is threadedly connected to the external thread at one end of the fixture 1, and the workpiece 6 is limited in the positioning hole.

[0025] When in use, the positioning plate 2 is installed at one end of the fixture 1, the workpiece 6 is placed in the positioning hole of the positioning plate 2, and then the workpiece 6 is fixed in the positioning hole by the locking nut 3. External processing equipment can grind the workpiece 6 through the limiting hole 9 of the locking nut 3.

[0026] Specifically, for different special-shaped workpieces, the corresponding positioning plate 2 can be replaced to place the workpiece 6. In addition, the first through hole 7 is a countersunk hole, which can prevent the bolt 8 from protruding and ensure the flatness of the plane.

[0027] Furthermore, a connecting hole 10 is provided at the other end of the fixture 1, and a first internal thread is provided on the inner wall of the connecting hole 10 for threaded connection with the output shaft of the machine tool. A second through hole 11 is provided at the center of the fixture 1.

[0028] Furthermore, two third through holes 12 are symmetrically opened on the positioning plate 2, and two fourth through holes are symmetrically opened on the clamp 1. One end of the cylindrical positioning pin 13 is located in the third through hole 12, and the other end of the cylindrical positioning pin 13 is located in the fourth through hole. A counterweight push rod 14 is arranged in the fourth through hole. A second internal thread is opened on the inner wall of the fourth through hole away from the end of the positioning plate 2, and is used for threaded connection with the counterweight bolt 15.

[0029] The cylindrical positioning pin 13 limits the displacement of the positioning plate 2, and the counterweight mandrel 14 is used for counterweighting and limiting the cylindrical positioning pin 13. The counterweight bolt 15 is used for limiting the displacement of the counterweight mandrel 14.

[0030] Furthermore, a runout measurement groove 5 is provided on the side wall of the fixture 1 near the external thread.

[0031] Specifically, after the fixture 1 is connected to the output shaft of the machine tool, the output shaft of the machine tool drives the fixture 1 to rotate, and the accuracy of the fixture 1 after being connected to the machine tool can be detected by using a micrometer.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hole grinding fixture, characterized in that: The hole grinding fixture comprises: A clamp (1), wherein the clamp (1) is a Morse taper handle, an external thread is provided on the side surface of one end of the clamp (1), and two threaded holes (4) are symmetrically provided on one end of the clamp (1); A positioning plate (2), wherein a positioning hole is provided at the center of the positioning plate (2), wherein the positioning hole is used to place a workpiece (6), and wherein two first through holes (7) are symmetrically provided on the positioning plate (2), wherein a bolt (8) passes through the first through hole (7) and the threaded hole (4) in sequence, and the positioning plate (2) and the clamp (1) are fixedly connected; A locking nut (3), wherein a limiting hole (9) is provided on the locking nut (3) corresponding to the workpiece (6), and the locking nut (3) is threadedly connected to the external thread at one end of the clamp (1) and limits the workpiece (6) in the positioning hole.

2. The hole grinding fixture according to claim 1, characterized in that: The other end of the clamp (1) is provided with a connection hole (10), and the inner wall of the connection hole (10) is provided with a first internal thread for threaded connection with an output shaft of a machine tool.

3. The hole grinding fixture according to claim 1, characterized in that: A second through hole (11) is provided at the center of the clamp (1).

4. The hole grinding fixture according to claim 1, characterized in that: The positioning plate (2) is symmetrically provided with two third through holes (12), and the clamp (1) is symmetrically provided with two fourth through holes. One end of a cylindrical positioning pin (13) is located in the third through hole (12), and the other end of the cylindrical positioning pin (13) is located in the fourth through hole. A counterweight push rod (14) is provided in the fourth through hole. The inner wall of the fourth through hole away from the positioning plate (2) is provided with a second internal thread, and is used for threaded connection with a counterweight bolt (15).

5. The hole grinding fixture according to claim 1, characterized in that: A runout measurement groove (5) is provided on the side wall of the clamp (1) near the external thread.

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