Fixture combining the pin-raising positioning and floating centering mechanism

Abstract

The utility model discloses a tooling fixture for combined use of a pin-raising positioning and a floating centering mechanism, belonging to the field of mechanical processing technology, comprising a rotating assembly, on which a positioning clamping assembly is installed; the positioning clamping assembly comprises two groups of positioning assemblies and two groups of clamping assemblies, and a detection assembly is installed on the rotating assembly. In the above manner, the utility model can process three sides of a blank, saving time.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing, in particular to a tooling fixture using a combination of a rising pin positioning mechanism and a floating centering mechanism. Background Art

[0002] The expansion valve is the main component and one of the four major parts of the refrigeration system. It is installed between the condenser and the evaporator, and its outlet is connected to the inlet of the evaporator.

[0003] Chinese patent CN214643024U discloses a special-shaped parts processing positioning tool, including a tooling plate, and clamping bodies are symmetrically provided on the left and right sides of the top of the tooling plate, and the clamping bodies include a first clamp, a second clamp and a third clamp; the first clamp includes a positioning cylinder, a pressure plate and a fixing pin, the piston rod end of the positioning cylinder is provided with a pressure plate, and the bottom of the pressure plate is provided with a fixing pin; the second clamp includes an L-shaped seat, a balancing shaft, a balancing plate and a spring pin, the top front side of the tooling plate is provided with a balancing shaft, the rear side is provided with an L-shaped seat, the balancing shaft is rotatably sleeved with a balancing plate, and the balancing plate and the L-shaped seat are provided with spring pins.

[0004] However, this patent can only process the flat surface of the part.

[0005] Based on this, the utility model designs a tooling fixture which combines a pin-rising positioning mechanism with a floating centering mechanism to solve the above-mentioned problem. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a tooling fixture which combines a pin-rising positioning mechanism with a floating centering mechanism.

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A fixture that combines the pin-raising positioning and floating centering mechanisms, including a rotating assembly;

[0009] A positioning and clamping assembly is installed on the rotating assembly;

[0010] The positioning and clamping assembly comprises two groups of positioning assemblies and two groups of clamping assemblies, and both the positioning assemblies and the clamping assemblies are connected to the rotating assembly;

[0011] A detection component is installed on the rotating component.

[0012] Furthermore, the rotating assembly includes a four-axis turntable, an L-shaped plate, a bottom plate, a fixture base, a pad block and a mounting block. The upper end of the bottom plate is fixedly connected to the four-axis turntable, the inner walls of the left and right ends of the four-axis turntable are fixedly connected to the L-shaped plate, and the lower end of the L-shaped plate is fixedly connected to the fixture base. There are two pad blocks and two mounting blocks, and the upper end of the fixture base is fixedly connected to the pad block, the mounting block, the pad block and the mounting block from left to right.

[0013] Furthermore, two sets of positioning components are respectively connected to the left and right ends of the fixture base, the raising block is connected to the positioning component, two sets of clamping components are respectively connected to the left and right ends of the fixture base, the mounting block is connected to the clamping component, and the fixture base and the raising block are both connected to the detection component.

[0014] Furthermore, the positioning assembly includes a positioning block, a three-point positioning block, a first hydraulic cylinder, a lateral positioning block, a first corner oil cylinder and a second corner oil cylinder, the two positioning blocks are respectively fixedly connected to the front and rear sides of the upper end of the clamp base, the three-point positioning block is fixedly connected to the upper end of the clamp base, and the positioning block and the three-point positioning block are both located between the clamp base and the raising block, the front side of the lower end of the clamp base is fixedly connected to the first hydraulic cylinder, the output end of the first hydraulic cylinder is fixedly connected to the lateral positioning block, the rear end of the raising block is fixedly connected to the first corner oil cylinder, and the upper end of the raising block is fixedly connected to the second corner oil cylinder.

[0015] Furthermore, the clamping assembly includes a second hydraulic cylinder, a connecting rod, a first inclined block, a second inclined block, a lateral clamping block and a spring. The front and rear sides of the lower end of the clamp base are fixedly connected to the second hydraulic cylinder, the output end of the second hydraulic cylinder is fixedly connected to the connecting rod, the connecting rod passes through the mounting block and is fixedly connected to the first inclined block, and two second inclined blocks matching the first inclined block are slidably connected in the front and rear side openings of the upper end of the mounting block, and the two second inclined blocks on the same side are respectively located on the left and right sides of the first inclined block and are slidably connected to the first inclined block, the left end of the left second inclined block is fixedly connected to the lateral clamping block, the lateral clamping block is slidably connected to the mounting block, one end of the two springs are respectively fixedly connected to the front and rear sides of the right end of the left second inclined block, and the other ends of the two springs are respectively fixedly connected to the front and rear sides of the left end of the right second inclined block.

[0016] Furthermore, the first inclined block is a hexagonal inclined block, and the lower end of the first inclined block is inclined inwards.

[0017] Furthermore, the detection component includes a first pressure sensor and a second pressure sensor. The first pressure sensor is fixedly connected to the left side of the upper end of the raising block, and two second pressure sensors are fixedly connected to the rear side of the upper end of the clamp base, and the two second pressure sensors are respectively located on the right side of the first corner cylinder on the same side.

[0018] Furthermore, the first corner oil cylinder is in close contact with the second pressure sensor, and the second corner oil cylinder is in close contact with the first pressure sensor.

[0019] The utility model has the following technical effects:

[0020] When the utility model rotates, the four-axis turntable drives the L-shaped plate to rotate, the L-shaped plate drives the fixture base to rotate, the fixture base drives the pad block, the mounting block, the positioning clamping assembly and the detection assembly to rotate, thereby driving the blank to rotate, realizing three-sided processing of the blank;

[0021] When the utility model is clamped, the first hydraulic cylinder drives the lateral positioning block to move upward, the second hydraulic cylinder drives the connecting rod to move upward, the connecting rod drives the first inclined block to move upward, the second inclined block moves inward under the elastic action of the spring, and the second inclined block drives the lateral pressing block to move rightward to make way for the blank, and the blank is placed on the positioning block and the three-point positioning block, and the six-point positioning of the blank is achieved through the lateral positioning block, the positioning block and the three-point positioning block, and the first corner oil cylinder drives the corner pressing plate to rotate and press the blank, and the front and rear directions of the blank are pre-positioned and pressed under the joint action of the corner pressing plate and the lateral positioning block. The second corner oil cylinder drives the upper pressure plate to rotate and press the blank. Under the joint action of the upper pressure plate, the positioning block and the three-point positioning block, the blank is pre-positioned and clamped in the upper and lower directions. Then the second hydraulic cylinder drives the connecting rod to move downward, and the connecting rod drives the first inclined block to move downward. The first inclined block drives the second inclined block to move outward to stretch the spring. The second inclined block drives the lateral pressing block to move left to press the blank. The first corner oil cylinder and the second corner oil cylinder rotate and reset, and the first hydraulic cylinder drives the lateral positioning block to move downward and reset. After the detection component detects that the first corner oil cylinder and the second corner oil cylinder have returned to their original positions, production and processing begins. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 The utility model is a three-dimensional tooling fixture combined with the rising pin positioning and floating centering mechanism Figure 1 ;

[0024] Figure 2 It is a front view of the tooling fixture used in combination with the pin-rising positioning and floating centering mechanisms of the utility model;

[0025] Figure 3 The utility model is a three-dimensional tooling fixture combined with the rising pin positioning and floating centering mechanism Figure 2 ;

[0026] Figure 4 The utility model is a three-dimensional tooling fixture combined with the rising pin positioning and floating centering mechanism Figure 3 ;

[0027] Figure 5 For along Figure 2 AA direction cross-sectional view;

[0028] Figure 6 for Figure 4 The enlarged view of point B in the middle;

[0029] Figure 7 for Figure 5 Enlarged view of point C in the middle.

[0030] The numbers in the figure represent:

[0031] 1. Rotating assembly; 11. Four-axis turntable; 12. L-shaped plate; 13. Bottom plate; 14. Clamp base; 15. Heightening block; 16. Mounting block; 2. Positioning and clamping assembly; 21. Positioning assembly; 211. Positioning block; 212. Three-point positioning block; 213. First hydraulic cylinder; 214. Lateral positioning block; 215. First corner oil cylinder; 216. Second corner oil cylinder; 22. Clamping assembly; 221. Second hydraulic cylinder; 222. Connecting rod; 223. First inclined block; 224. Second inclined block; 225. Lateral clamping block; 226. Spring; 3. Detection assembly; 31. First pressure sensor; 32. Second pressure sensor. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0033] The utility model is further described below in conjunction with embodiments.

[0034] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0035] Example 1

[0036] Please refer to the instruction manual Figure 1-7 , a fixture using a combination of a pin-raising positioning and a floating centering mechanism, including a rotating assembly 1;

[0037] A positioning and clamping assembly 2 is installed on the rotating assembly 1;

[0038] The positioning and clamping assembly 2 includes two groups of positioning assemblies 21 and two groups of clamping assemblies 22, and both the positioning assemblies 21 and the clamping assemblies 22 are connected to the rotating assembly 1;

[0039] The rotating component 1 is provided with a detection component 3 .

[0040] When in use, the expansion valve blank is placed on the rotating component 1, the positioning component 21 positions the blank, and the clamping component 22 clamps the blank. After clamping, the positioning component 21 retreats, and the detection component 3 detects whether the positioning component 21 retreats into place. After it is in place, the external processing device processes the blank, and the rotating component 1 drives the blank to rotate, so as to realize three-sided processing of the blank;

[0041] The rotating assembly 1 includes a four-axis turntable 11, an L-shaped plate 12, a bottom plate 13, a fixture base 14, a pad 15 and a mounting block 16. The upper end of the bottom plate 13 is fixedly connected to the four-axis turntable 11, the inner walls of the left and right ends of the four-axis turntable 11 are fixedly connected to the L-shaped plate 12, and the lower end of the L-shaped plate 12 is fixedly connected to the fixture base 14. There are two pads 15 and two mounting blocks 16. The upper end of the fixture base 14 is fixedly connected to the pad 15, the mounting block 16, the pad 15 and the mounting block 16 from left to right.

[0042] The two groups of positioning components 21 are respectively connected to the left and right ends of the fixture base 14, the pad block 15 is connected to the positioning component 21, the two groups of clamping components 22 are respectively connected to the left and right ends of the fixture base 14, the mounting block 16 is connected to the clamping component 22, and the fixture base 14 and the pad block 15 are both connected to the detection component 3.

[0043] During rotation, the four-axis turntable 11 drives the L-shaped plate 12 to rotate, the L-shaped plate 12 drives the fixture base 14 to rotate, the fixture base 14 drives the pad block 15, the mounting block 16, the positioning clamping assembly 2 and the detection assembly 3 to rotate, thereby driving the blank to rotate, realizing three-sided processing of the blank;

[0044] Taking the positioning component 21 at the left end as an example, the positioning component 21 includes a positioning block 211, a three-point positioning block 212, a first hydraulic cylinder 213, a lateral positioning block 214, a first corner cylinder 215 and a second corner cylinder 216. The two positioning blocks 211 are respectively fixedly connected to the front and rear sides of the upper end of the clamp base 14, the three-point positioning block 212 is fixedly connected to the upper end of the clamp base 14, and the positioning block 211 and the three-point positioning block 212 are both located between the clamp base 14 and the raising block 15. The first hydraulic cylinder 213 is fixedly connected to the front side of the lower end of the clamp base 14, and the output end of the first hydraulic cylinder 213 is fixedly connected to the lateral positioning block 214. The first corner cylinder 215 is fixedly connected to the rear end of the raising block 15, and the second corner cylinder 216 is fixedly connected to the upper end of the raising block 15.

[0045] The clamping assembly 22 at the left end is described as an example. The clamping assembly 22 includes a second hydraulic cylinder 221, a connecting rod 222, a first inclined block 223, a second inclined block 224, a lateral pressing block 225 and a spring 226. The front and rear sides of the lower end of the clamp base 14 are fixedly connected to the second hydraulic cylinder 221, and the output end of the second hydraulic cylinder 221 is fixedly connected to the connecting rod 222. The connecting rod 222 passes through the mounting block 16 and is fixedly connected to the first inclined block 223. The front and rear side openings of the upper end of the mounting block 16 are slidably connected to the mating The two second inclined blocks 224 of the first inclined block 223, and the two second inclined blocks 224 on the same side are respectively located on the left and right sides of the first inclined block 223 and are slidably connected with the first inclined block 223, the left end of the left second inclined block 224 is fixedly connected with a lateral clamping block 225, and the lateral clamping block 225 is slidably connected with the mounting block 16, one end of the two springs 226 is respectively fixedly connected to the front and rear sides of the right end of the left second inclined block 224, and the other ends of the two springs 226 are respectively fixedly connected to the front and rear sides of the left end of the right second inclined block 224.

[0046] The first inclined block 223 is a hexagonal inclined block, and the lower end of the first inclined block 223 is inclined inwardly.

[0047] During clamping, the first hydraulic cylinder 213 drives the lateral positioning block 214 to move upward, the second hydraulic cylinder 221 drives the connecting rod 222 to move upward, the connecting rod 222 drives the first inclined block 223 to move upward, the second inclined block 224 moves inward under the elastic action of the spring 226, and the second inclined block 224 drives the lateral clamping block 225 to move rightward to make way for the blank, and the blank is placed on the positioning block 211 and the three-point positioning block 212. The six-point positioning of the blank is achieved by the lateral positioning block 214, the positioning block 211 and the three-point positioning block 212. The first corner cylinder 215 drives the corner pressing plate to rotate and press the blank. Under the joint action of the corner pressing plate and the lateral positioning block 214, the pre-positioning and clamping of the blank in the front and rear directions are achieved. The oil cylinder 216 drives the upper pressure plate to rotate and press the blank. Under the joint action of the upper pressure plate, the positioning block 211 and the three-point positioning block 212, the blank is pre-positioned and clamped in the upper and lower directions. Then the second hydraulic cylinder 221 drives the connecting rod 222 to move downward, the connecting rod 222 drives the first inclined block 223 to move downward, the first inclined block 223 drives the second inclined block 224 to move outward to stretch the spring 226, and the second inclined block 224 drives the lateral clamping block 225 to move left to press the blank. The first corner oil cylinder 215 and the second corner oil cylinder 216 rotate and reset, the first hydraulic cylinder 213 drives the lateral positioning block 214 to move downward and reset, and after the detection component 3 detects that the first corner oil cylinder 215 and the second corner oil cylinder 216 have returned to their original positions, production and processing begins.

[0048] The detection component 3 includes a first pressure sensor 31 and a second pressure sensor 32. The first pressure sensor 31 is fixedly connected to the left side of the upper end of the raising block 15, and two second pressure sensors 32 are fixedly connected to the rear side of the upper end of the clamp base 14, and the two second pressure sensors 32 are respectively located on the right side of the first corner cylinder 215 on the same side.

[0049] During detection, the first corner oil cylinder 215 is in close contact with the second pressure sensor 32 , and the second corner oil cylinder 216 is in close contact with the first pressure sensor 31 .

[0050] 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 aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixture for combined use of a pin-raising positioning and a floating centering mechanism, comprising a rotating assembly (1), characterized in that: A positioning clamping assembly (2) is installed on the rotating assembly (1); The positioning and clamping assembly (2) comprises two groups of positioning assemblies (21) and two groups of clamping assemblies (22), and both the positioning assemblies (21) and the clamping assemblies (22) are connected to the rotating assembly (1); A detection component (3) is installed on the rotating component (1).

2. The fixture for combined use of the pin-rising positioning and floating centering mechanisms according to claim 1 is characterized in that: The rotating assembly (1) comprises a four-axis turntable (11), an L-shaped plate (12), a bottom plate (13), a fixture base (14), a padding block (15) and a mounting block (16); the upper end of the bottom plate (13) is fixedly connected to the four-axis turntable (11); the inner walls of the left and right ends of the four-axis turntable (11) are fixedly connected to the L-shaped plate (12); the lower end of the L-shaped plate (12) is fixedly connected to the fixture base (14); there are two padding blocks (15) and two mounting blocks (16); the upper end of the fixture base (14) is fixedly connected to the padding block (15), the mounting block (16), the padding block (15) and the mounting block (16) in sequence from left to right.

3. The fixture for combined use of the pin-rising positioning and floating centering mechanisms according to claim 2 is characterized in that: Two groups of positioning components (21) are respectively connected to the left and right ends of the clamp base (14), the padding block (15) is connected to the positioning component (21), two groups of clamping components (22) are respectively connected to the left and right ends of the clamp base (14), the mounting block (16) is connected to the clamping component (22), and the clamp base (14) and the padding block (15) are both connected to the detection component (3).

4. The fixture for combined use of the pin-rising positioning and floating centering mechanisms according to claim 3 is characterized in that: The positioning assembly (21) comprises a positioning block (211), a three-point positioning block (212), a first hydraulic cylinder (213), a lateral positioning block (214), a first corner oil cylinder (215) and a second corner oil cylinder (216); the two positioning blocks (211) are respectively fixedly connected to the front and rear sides of the upper end of the clamp base (14); the three-point positioning block (212) is fixedly connected to the upper end of the clamp base (14); the positioning block (211) and the three-point positioning block (212) are both located between the clamp base (14) and the padding block (15); the front side of the lower end of the clamp base (14) is fixedly connected to the first hydraulic cylinder (213); the output end of the first hydraulic cylinder (213) is fixedly connected to the lateral positioning block (214); the rear end of the padding block (15) is fixedly connected to the first corner oil cylinder (215); and the upper end of the padding block (15) is fixedly connected to the second corner oil cylinder (216).

5. The fixture for combined use of the pin-rising positioning and floating centering mechanisms according to claim 4 is characterized in that: The clamping assembly (22) comprises a second hydraulic cylinder (221), a connecting rod (222), a first inclined block (223), a second inclined block (224), a lateral pressing block (225) and a spring (226); the front and rear sides of the lower end of the clamp base (14) are fixedly connected to the second hydraulic cylinder (221); the output end of the second hydraulic cylinder (221) is fixedly connected to the connecting rod (222); the connecting rod (222) passes through the mounting block (16) and is fixedly connected to the first inclined block (223); the front and rear side openings of the upper end of the mounting block (16) are slidably connected to the first inclined block (223); 3), and the two second inclined blocks (224) on the same side are respectively located on the left and right sides of the first inclined block (223) and are slidably connected to the first inclined block (223), the left end of the left second inclined block (224) is fixedly connected with a lateral pressing block (225), and the lateral pressing block (225) is slidably connected to the mounting block (16), one end of the two springs (226) is respectively fixedly connected to the front and rear sides of the right end of the left second inclined block (224), and the other ends of the two springs (226) are respectively fixedly connected to the front and rear sides of the left end of the right second inclined block (224).

6. The fixture for combined use of the pin-rising positioning and floating centering mechanisms according to claim 5 is characterized in that: The first inclined block (223) is a hexagonal inclined block, and the lower end of the first inclined block (223) is inclined inwards.

7. The jig for combined use of the pin-rising positioning and floating centering mechanisms according to claim 6 is characterized in that: The detection assembly (3) comprises a first pressure sensor (31) and a second pressure sensor (32), the first pressure sensor (31) being fixedly connected to the left side of the upper end of the padding block (15), and two second pressure sensors (32) being fixedly connected to the rear side of the upper end of the clamp base (14), and the two second pressure sensors (32) are respectively located on the right side of the first corner oil cylinder (215) on the same side.

8. The fixture for combined use of the pin-rising positioning and floating centering mechanisms according to claim 7 is characterized in that: The first turning angle oil cylinder (215) is in close contact with the second pressure sensor (32), and the second turning angle oil cylinder (216) is in close contact with the first pressure sensor (31).

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