Rotary body single-pin positioning clamp

Abstract

The utility model discloses a rotary body single-pin positioning clamp, which belongs to the technical field of clamps and comprises a carrier. An oil cylinder is fixedly installed in the middle of the carrier, and a sliding block is fixedly installed at the output end of the oil cylinder. Appearance positioning assemblies are symmetrically arranged on the front side and the rear side of the carrier at equal intervals; an arc-shaped pressing face is arranged on the side, aligned with the appearance positioning assembly, of the sliding block. The pressing face and the appearance positioning assembly form a containing groove for conducting appearance positioning on the rotary body. A first positioning assembly for machining a machining hole is arranged in the appearance positioning assembly on the rear side, and a second positioning assembly for keeping the machining hole concentric is arranged in the appearance positioning assembly on the front side. By means of the mode, the rotary body is positioned and clamped through the appearance positioning assembly and the first positioning assembly, and then the rotary body with the machining hole machined is taken out and placed in the appearance positioning assembly on the front side; and a machining hole in the rotary body is accurately positioned through the second positioning assembly in the process that the rotary body is clamped through the sliding block.

Description

Technical Field

[0001] The utility model relates to the technical field of fixtures, in particular to a rotary body single-pin positioning fixture. Background Technique

[0002] When processing a rotary body workpiece, the workpiece is usually clamped and positioned according to its outer shape to avoid the workpiece from shifting, shaking, etc. during the processing, thereby improving the processing accuracy and the finished product rate.

[0003] For example, Chinese Patent CN217890209U discloses a fixture for processing a rotary body. The fixture cooperates an active clamping block and a fixed clamping block to perform outer shape positioning and clamping on the workpiece through an end face conforming to the workpiece.

[0004] However, it is difficult to accurately position a circular workpiece only through outer shape positioning. There are multiple processing points on the upper and lower end faces of some circular workpieces, and it is difficult to accurately judge the positions of multiple processing points during processing only through outer shape positioning.

[0005] Based on this, the utility model designs a rotary body single-pin positioning fixture to solve the above problems. Content of the Utility Model

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a rotary body single-pin positioning fixture.

[0007] To achieve the above objectives, the utility model is realized through the following technical solutions:

[0008] A rotary body single-pin positioning fixture, comprising a carrier;

[0009] An oil cylinder is fixedly installed in the middle of the carrier. The oil cylinder is a multi-action hydraulic cylinder with multiple output ends; a slider is fixedly installed on the output end of the oil cylinder; outer shape positioning components are symmetrically and equidistantly arranged on the front and rear sides of the carrier, and the slider is aligned with the outer shape positioning components; and on one side of the slider aligned with the outer shape positioning components, there is an arc-shaped pressing surface for pressing and positioning the outer shape of the rotary body; the pressing surface and the outer shape positioning components form a receiving groove for positioning the outer shape of the rotary body.

[0010] A first positioning component for machining a machining hole is arranged in the outer shape positioning component at the rear side, and a second positioning component for keeping the machining holes concentric is arranged in the outer shape positioning component at the front side.

[0011] Furthermore, the outer shape positioning component includes a positioning groove and a moving groove. The carrier is provided with the moving groove and the positioning groove. The side wall of the positioning groove is arc-shaped; the length of the moving groove is greater than the diameter of the positioning groove; the moving groove is in limit sliding connection with the slider; the positioning groove and the pressing surface form a receiving groove for positioning the outer shape of the rotary body.

[0012] Further, the outer shape positioning component further includes a first limiting groove, and the first limiting groove is opened on one side of the moving groove close to the oil cylinder.

[0013] Further, a blocking block is fixedly installed on one side of the bottom of the slider close to the oil cylinder, and the blocking block abuts against the side wall of the first limiting groove.

[0014] Further, the first positioning component includes a first alignment hole and a second alignment hole. A circular first alignment hole and a second alignment hole are opened at the bottom of the rear positioning groove. The first alignment hole is aligned with the processing hole, and the second alignment hole is aligned with the first through hole; the centers of the first alignment hole and the second alignment hole do not coincide with the center of the positioning groove.

[0015] Further, the second positioning component includes a rotating block, a positioning pin and a circular hole. The rotating block is rotatably installed at the bottom of the front positioning groove. A diamond-shaped positioning pin is fixedly installed on the upper side of the rotating block. The positioning pin is aligned with the processing hole, the center of the positioning pin coincides with the center of the processing hole, and the diameter of the circumscribed circle of the positioning pin is the same as the diameter of the processing hole; circular holes are symmetrically opened at the bottom of the front positioning groove; the circular holes are aligned with the second through hole.

[0016] Further, a limiting component for limiting the slider is also installed on the carrier and the slider.

[0017] Further, the limiting component includes a second limiting groove and a pressing block. Second limiting grooves are symmetrically opened on the upper side of the slider, and the pressing block is fixedly installed on the upper side of the carrier. The pressing block is in sliding connection with the second limiting groove in a fitting manner.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The oil cylinder drives the slider to move horizontally, and the rotating body is pressed against the rear outer shape positioning component through the pressing surface at the end of the slider; then the processing hole and the milling surface on the rotating body are processed, and the oil cylinder drives the slider to reset; the operator takes out the rotating body after the processing hole is processed and places it in the front outer shape positioning component, and at the same time aligns the processing hole and the second through hole with the second positioning component; the oil cylinder drives the slider to move horizontally, and the rotating body is pressed against the rear outer shape positioning component through the pressing surface at the end of the slider; during this process, the slider pushes the rotating body to move, and the rotating body rotates in the outer shape positioning component under the positioning action of the processed processing hole and the second positioning component. When the slider presses the rotating body in the outer shape positioning component, the processing holes on the rotating body in the front outer shape positioning component and the rotating body in the rear outer shape positioning component remain concentric; thus, rapid and accurate positioning of the rotating body is realized, while ensuring the processing accuracy and improving the processing efficiency. Description of the Drawings

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0021] Figure 1 is the three-dimensional view of the rotary body single-pin positioning fixture of the present invention Figure 1 ;

[0022] Figure 2 is the top view of the rotary body single-pin positioning fixture of the present invention;

[0023] Figure 3 is the structural schematic diagram of the rotary body;

[0024] Figure 4 is the three-dimensional view of the rotary body single-pin positioning fixture of the present invention Figure 2 ;

[0025] Figure 5 is the structural schematic diagram of the slider.

[0026] The reference numerals in the figure respectively represent:

[0027] 1, carrier; 2, oil cylinder; 21, slider; 211, pressing surface; 212, abutting block; 3, outer shape positioning component; 31, positioning groove; 32, moving groove; 33, first limiting groove; 4, first positioning component; 41, first alignment hole; 42, second alignment hole; 5, second positioning component; 51, rotating block; 52, positioning pin; 53, round hole; 6, limiting component; 61, second limiting groove; 62, pressing block; 7, rotary body; 71, machining hole; 72, first through hole; 73, second through hole. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0029] The "left", "right", "front", "rear", "upper", and "lower" mentioned in the following description are oriented in the perspective direction of the top view.

[0030] Embodiment 1

[0031] In some embodiments, please refer to the attached drawings of the specification Figures 1-3 , a single-pin positioning fixture for a rotating body, comprising a carrier 1;

[0032] A hydraulic cylinder 2 is fixedly installed in the middle of the carrier 1. The hydraulic cylinder 2 is a multi-action hydraulic cylinder with multiple output ends; a slider 21 is fixedly installed on the output end of the hydraulic cylinder 2; shape positioning components 3 are symmetrically and equidistantly arranged on the front and rear sides of the carrier 1, and the slider 21 is aligned with the shape positioning components 3; and on one side where the slider 21 is aligned with the shape positioning components 3, there is an arc-shaped pressing surface 211 for pressing and positioning the shape of the rotating body 7; the pressing surface 211 and the shape positioning components 3 form a receiving groove for shape positioning the rotating body 7.

[0033] A first positioning component 4 for machining a machining hole 71 is arranged in the shape positioning component 3 at the rear side, and a second positioning component 5 for keeping the machining hole 71 concentric is arranged in the shape positioning component 3 at the front side.

[0034] In this embodiment, when the single-pin positioning fixture for the rotating body works normally, the rotating body 7 is placed in the shape positioning component 3 at the rear side, and the hydraulic cylinder 2 drives the slider 21 to move horizontally. The rotating body 7 is pressed in the shape positioning component 3 at the rear side through the pressing surface 211 at the end of the slider 21; then, the machining hole 71 and the milling surface on the rotating body 7 are machined. At this time, the machining hole 71 and the first through hole 72 are aligned with the first positioning component 4; the hydraulic cylinder 2 drives the slider 21 to reset. Then, the operator takes out the rotating body 7 after machining the machining hole 71 and places it in the shape positioning component 3 at the front side, and at the same time aligns the machining hole 71 and the second through hole 73 with the second positioning component 5; the hydraulic cylinder 2 drives the slider 21 to move horizontally, and the rotating body 7 is pressed in the shape positioning component 3 at the rear side through the pressing surface 211 at the end of the slider 21; during this process, the slider 21 pushes the rotating body 7 to move, and the rotating body 7 rotates in the shape positioning component 3 under the positioning action of the machining hole 71 and the second positioning component 5 after machining. Thus, when the slider 21 presses the rotating body 7 in the shape positioning component 3, the machining holes 71 on the rotating body 7 in the shape positioning component 3 at the front side and the rotating body 7 in the shape positioning component 3 at the rear side are kept concentric; thereby realizing rapid and accurate positioning of the rotating body 7, ensuring the machining accuracy while improving the machining efficiency.

[0035] Embodiment Two

[0036] In some embodiments, such as Figures 1-5As shown, as a preferred embodiment of the present utility model, the outer shape positioning component 3 includes a positioning groove 31 and a moving groove 32. The carrier 1 is provided with a moving groove 32 and a positioning groove 31. The side wall of the positioning groove 31 is arc-shaped; the length of the moving groove 32 is greater than the diameter of the positioning groove 31; the moving groove 32 is in limiting sliding connection with the slider 21; a receiving groove for positioning the outer shape of the rotating body 7 is formed between the positioning groove 31 and the pressing surface 211;

[0037] The outer shape positioning component 3 further includes a first limiting groove 33. The first limiting groove 33 is opened on one side of the moving groove 32 close to the oil cylinder 2;

[0038] A blocking block 212 is fixedly installed on one side of the bottom of the slider 21 close to the oil cylinder 2. The blocking block 212 abuts against the side wall of the first limiting groove 33;

[0039] The first positioning component 4 includes a first alignment hole 41 and a second alignment hole 42. A circular first alignment hole 41 and a second alignment hole 42 are opened at the bottom of the rear positioning groove 31. The first alignment hole 41 is aligned with the processing hole 71, and the second alignment hole 42 is aligned with the first through hole 72; the centers of the first alignment hole 41 and the second alignment hole 42 do not coincide with the center of the positioning groove 31;

[0040] The second positioning component 5 includes a rotating block 51, a positioning pin 52 and a circular hole 53. The rotating block 51 is rotatably installed at the bottom of the front positioning groove 31. A diamond-shaped positioning pin 52 is fixedly installed on the upper side of the rotating block 51. The positioning pin 52 is aligned with the processing hole 71. The center of the positioning pin 52 coincides with the center of the processing hole 71, and the diameter of the circumscribed circle of the positioning pin 52 is the same as the diameter of the processing hole 71; circular holes 53 are symmetrically opened at the bottom of the front positioning groove 31; the circular holes 53 are aligned with the second through hole 73;

[0041] A limiting component 6 for limiting the slider 21 is further installed on the carrier 1 and the slider 21;

[0042] The limiting component 6 includes a second limiting groove 61 and a pressing block 62. Second limiting grooves 61 are symmetrically opened on the upper side of the slider 21. The pressing block 62 is fixedly installed on the upper side of the carrier 1. The pressing block 62 is in fitting sliding connection with the second limiting groove 61.

[0043] In this embodiment, when the outer shape positioning component 3, the first positioning component 4, the second positioning component 5 and the limiting component 6 are working properly, the rotating body 7 is placed in the rear positioning groove 31. The oil cylinder 2 drives the slider 21 to move horizontally under the limiting action of the second limiting groove 61 and the pressing block 62. The pressing surface 211 at the end of the slider 21 cooperates with the positioning groove 31 to perform outer shape positioning and clamping on the rotating body 7. At the same time, through the slider 21, the moving groove 32, the first limiting groove 33 and the abutting block 212, it is avoided that the rotating body 7 is over-extruded during the extrusion process. After the processing hole 71 is finely processed, the slider 21 is reset. The rotating body 7 after the processing hole 71 is processed is placed in the front positioning groove 31, and the positioning pin 52 is inserted into the processing hole 71. The oil cylinder 2 drives the slider 21 to move horizontally under the limiting action of the second limiting groove 61 and the pressing block 62. The pressing surface 211 at the end of the slider 21 cooperates with the positioning groove 31 to push the rotating body 7 to rotate. The rotating body 7 rotates with the center of the positioning pin 52 as the center of the circle under the cooperation of the processing hole 71 and the positioning pin 52 until the rotating body 7 is clamped. At this time, the second through hole 73 is aligned with the round hole 53, and the processing holes 71 of the rotating body 7 in the front and rear positioning grooves 31 are concentric.

[0044] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. Rotary body single-pin positioning fixture, including a carrier (1), characterized in that: A hydraulic cylinder (2) is fixedly installed in the middle of the carrier (1), and the hydraulic cylinder (2) is a multi-acting hydraulic cylinder with multiple output ends; a slider (21) is fixedly installed on the output end of the hydraulic cylinder (2); on both the front and rear sides of the carrier (1), shape positioning components (3) are symmetrically arranged at equal intervals, and the slider (21) is aligned with the shape positioning components (3); and on one side where the slider (21) is aligned with the shape positioning components (3), there is an arc-shaped pressing surface (211) for pressing and positioning the shape of the rotary body (7); the pressing surface (211) and the shape positioning components (3) form a receiving groove for positioning the shape of the rotary body (7). A first positioning component (4) for machining a machining hole (71) is arranged in the shape positioning component (3) at the rear side, and a second positioning component (5) for keeping the machining hole (71) concentric is arranged in the shape positioning component (3) at the front side.

2. The single-pin positioning fixture for a rotating body according to claim 1, wherein The shape positioning component (3) includes a positioning groove (31) and a moving groove (32). The carrier (1) is provided with the moving groove (32) and the positioning groove (31), and the side wall of the positioning groove (31) is circular arc-shaped; the length of the moving groove (32) is greater than the diameter of the positioning groove (31); the moving groove (32) is in limit sliding connection with the slider (21); a receiving groove for positioning the shape of the rotary body (7) is formed between the positioning groove (31) and the pressing surface (211).

3. The rotary body single-pin positioning fixture according to claim 2, wherein The shape positioning component (3) further includes a first limiting groove (33), and the first limiting groove (33) is opened on one side of the moving groove (32) close to the hydraulic cylinder (2).

4. The rotary body single-pin positioning fixture according to claim 3, wherein A resisting block (212) is fixedly installed on one side of the bottom of the slider (21) close to the hydraulic cylinder (2), and the resisting block (212) abuts against the side wall of the first limiting groove (33).

5. The rotary body single-pin positioning fixture according to claim 4, characterized in that, The first positioning component (4) includes a first alignment hole (41) and a second alignment hole (42). A circular first alignment hole (41) and a second alignment hole (42) are opened at the bottom of the rear positioning groove (31). The first alignment hole (41) is aligned with the machining hole (71), and the second alignment hole (42) is aligned with the first through hole (72); the centers of the first alignment hole (41) and the second alignment hole (42) do not coincide with the center of the positioning groove (31).

6. The single-pin positioning fixture for a rotating body according to claim 5, characterized in that, The second positioning component (5) includes a rotating block (51), a positioning pin (52), and a round hole (53). The rotating block (51) is rotatably installed at the bottom of the front positioning groove (31). A diamond-shaped positioning pin (52) is fixedly installed on the upper side of the rotating block (51). The positioning pin (52) is aligned with the machining hole (71), the center of the positioning pin (52) coincides with the center of the machining hole (71), and the diameter of the circumscribed circle of the positioning pin (52) is the same as the diameter of the machining hole (71); round holes (53) are symmetrically opened at the bottom of the front positioning groove (31); the round holes (53) are aligned with the second through hole (73).

7. The rotary body single-pin positioning fixture according to claim 6, characterized in that, A limiting component (6) for limiting the slider (21) is further installed on the carrier (1) and the slider (21).

8. The single-pin positioning fixture for a rotating body according to claim 7, characterized in that, The limiting component (6) includes a second limiting groove (61) and a pressing block (62). The second limiting grooves (61) are symmetrically formed on the upper side of the slider (21), and the pressing block (62) is fixedly installed on the upper side of the carrier (1). The pressing block (62) is in sliding connection with the second limiting groove (61) in a fitting manner.

Images