A thin-walled part positioning tool

Abstract

The utility model discloses a kind of thin-walled part positioning tool, belong to positioning tool field, including base, the top of base is fixedly connected with support, support is fixedly connected with mounting plate at one end away from base, clamping mechanism is provided on base, clamping mechanism includes a group of annularly distributed No.1 hydraulic cylinder and No.2 hydraulic cylinder, No.1 hydraulic cylinder is fixedly connected in the top of base. Advantageous effect lies in: clamping mechanism, positioning mechanism and docking mechanism are set, the rotation of rotating plate can make the size of two groups of positioning columns on translation seat cooperate with the thin-walled part to be processed, conveniently position the part to be processed, and the part to be processed is not deformed when positioning, the clamping action of No.1 hydraulic cylinder and No.2 hydraulic cylinder is set simultaneously inside and outside the part to be processed, and the limiting of docking plate, fixed effect is played while effectively preventing the deformation of the part to be processed.

Description

Technical Field

[0001] This utility model relates to the field of positioning fixtures, and in particular to a positioning fixture for thin-walled parts. Background Technology

[0002] For ring-shaped and thin-walled parts, the workpiece needs to be clamped onto the positioning and clamping mechanism of the machine tool before subsequent processing.

[0003] A search revealed a Chinese patent publication number CN218192632U, which discloses a positioning and clamping fixture for thin-walled parts. This patent includes a base with a positioning mechanism in the middle and a clamping device around the positioning mechanism. The positioning mechanism includes a positioning disk with an outer positioning ring fixed on it. An elastic positioning sleeve is provided on the inner wall of the outer positioning ring, and a gap between the outer ring of the elastic positioning sleeve and the inner ring of the outer positioning ring is provided. A bottom cylinder is fixed at the bottom of the base, and the piston rod of the bottom cylinder is connected to one end of an inner pull shaft that passes through the positioning disk and the elastic positioning sleeve. The other end of the inner pull shaft is equipped with an inner cone that wedges with the inner wall of the upper end of the elastic positioning sleeve. In existing positioning fixtures for thin-walled parts, the operation steps for centering and positioning annular thin-walled parts are complicated. Furthermore, when the device performs clamping action, uneven force on the inner and outer sides can cause deformation of the thin-walled parts, affecting production efficiency and reducing the yield rate. Utility Model Content

[0004] The purpose of this invention is to provide a positioning fixture for thin-walled parts in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A positioning fixture for thin-walled parts includes a base, a bracket fixedly connected to the top of the base, a mounting plate fixedly connected to the end of the bracket away from the base, a clamping mechanism on the base, the clamping mechanism including a set of first hydraulic cylinders and second hydraulic cylinders arranged in a ring, the first hydraulic cylinder being fixedly connected to the top of the base, the second hydraulic cylinder being fixedly connected to the top of the mounting plate, the first hydraulic cylinders and second hydraulic cylinders being arranged opposite to each other, the output ends of the first hydraulic cylinders and second hydraulic cylinders being fixedly connected to clamping components, a rotating mechanism inside the base, the rotating mechanism including a rotating plate, the rotating plate being rotatably connected inside the base, the rotating plate having two symmetrically arranged first sliding grooves, and several second sliding grooves arranged in a ring on the first sliding grooves;

[0007] A set of symmetrically arranged positioning mechanisms are movably arranged on the first slide of the rotating plate. The positioning mechanisms are used to position thin-walled parts. A docking mechanism is movably arranged in the second slide of the rotating plate. The docking mechanism is used to position the clamping assembly.

[0008] Preferably, the positioning mechanism includes a sliding rod, which is slidably disposed in a first slide groove. A translation seat is fixedly connected to the top of the sliding rod, and guide rods are slidably connected to the two translation seats. The guide rods are fixedly connected to the base. Two symmetrically arranged connecting seats are slidably connected to the top of the translation seats. Mounting bolts are fixedly connected to the connecting seats, and positioning pins are detachably connected to the mounting bolts.

[0009] Preferably, a bidirectional lead screw is rotatably connected to the translation seat, and the bidirectional lead screw is threadedly connected to two connecting seats respectively.

[0010] Preferably, the docking mechanism includes several annularly distributed docking plates, which are movably disposed inside the base. A connecting shaft is fixedly connected to the bottom of the docking plates, and the connecting shaft is slidably disposed in the second slide groove. The first slide groove and the second slide groove are located in the same annular area. A slider is fixedly connected to the bottom of the connecting shaft, and a base plate is fixedly connected inside the base. Several annularly distributed straight grooves are opened on the top of the base plate, and the slider is slidably disposed in the straight grooves.

[0011] Preferably, a rotating handle is fixedly connected to the side of the rotating plate, and a mounting groove is provided on the side of the base, with the rotating handle movably disposed in the mounting groove.

[0012] Preferably, the clamping assembly includes a connecting plate, which is fixedly connected to the output ends of hydraulic cylinder No. 1 and hydraulic cylinder No. 2. An abutment block is fixedly connected to the bottom of the connecting plate, a clamping plate is fixedly connected to one side of the connecting plate, and an anti-slip pad is fixedly connected to the side of the clamping plate away from the connecting plate.

[0013] The beneficial effects are as follows: a clamping mechanism, a positioning mechanism, and a docking mechanism are set up. By rotating the rotating plate, the two sets of positioning pins on the translation seat can match the size of the thin-walled part to be processed, which can easily position the part to be processed without deforming it. The No. 1 and No. 2 hydraulic cylinders simultaneously clamp the part to be processed from the inside and outside, and the docking plate limits the movement, which can fix the part and effectively prevent it from deforming.

[0014] The additional technical features and advantages of this utility model will become more apparent from the following description, or may be learned through specific practice of this utility model. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of a thin-walled part positioning fixture according to the present invention;

[0017] Figure 2This is a top view of a thin-walled part positioning fixture according to the present invention;

[0018] Figure 3 This is a schematic diagram of the interior of the base of a thin-walled part positioning fixture according to the present invention;

[0019] Figure 4 This is a schematic diagram showing the relative positions of the positioning mechanism and the docking mechanism of a thin-walled part positioning fixture as described in this utility model;

[0020] Figure 5 This is a schematic diagram of the positioning mechanism of a thin-walled part positioning fixture according to the present invention;

[0021] Figure 6 This is a schematic diagram of the positioning mechanism of a thin-walled part positioning fixture according to the present invention;

[0022] Figure 7 This utility model describes a positioning fixture for thin-walled parts. Figure 1 Enlarged view of point A in the middle.

[0023] The reference numerals in the attached drawings are explained as follows: 101, base; 102, mounting groove; 103, bracket; 104, mounting plate; 201, hydraulic cylinder No. 1; 202, hydraulic cylinder No. 2; 203, connecting plate; 204, abutment block; 205, clamping plate; 206, anti-slip pad; 301, rotating plate; 302, slide groove No. 1; 303, slide groove No. 2; 304, rotating handle; 305, base plate; 306, straight groove; 401, sliding rod; 402, translation seat; 403, guide rod; 404, connecting seat; 405, double-acting screw; 406, mounting bolt; 407, positioning post; 501, mating plate; 502, connecting shaft; 503, slider. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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, they should not be construed as limitations on this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings:

[0027] like Figure 1 — Figure 7 As shown, a thin-walled part positioning fixture includes a base 101. A bracket 103 is bolted to the top of the base 101, and a mounting plate 104 is bolted to the end of the bracket 103 away from the base 101. A clamping mechanism is provided on the base 101, which includes a set of hydraulic cylinders 201 and 202 arranged in a ring. The center of the ring arrangement of the hydraulic cylinders 201 and 202 is located at the center of the base 101. The hydraulic cylinders 201 and 202 are connected to the same cylinder, so that the output of the hydraulic cylinders 201 and 202 is controlled by the same cylinder. The output shaft can be pushed out synchronously. The first hydraulic cylinder 201 is bolted to the top of the base 101, and the second hydraulic cylinder 202 is bolted to the top of the mounting plate 104. The first hydraulic cylinder 201 and the second hydraulic cylinder 202 are arranged opposite to each other. The output ends of the first hydraulic cylinder 201 and the second hydraulic cylinder 202 are bolted to a clamping assembly. A rotating mechanism is provided in the base 101. The rotating mechanism includes a rotating plate 301. The rotating plate 301 is rotatably connected in the base 101. Two symmetrically arranged first slide grooves 302 are opened on the rotating plate 301. Several annularly evenly distributed second slide grooves 303 are opened on the first slide grooves 302.

[0028] A set of symmetrically arranged positioning mechanisms are movably arranged on the first slide groove 302 of the rotating plate 301. The positioning mechanisms are used to position thin-walled parts. A docking mechanism is movably arranged in the second slide groove 303 of the rotating plate 301. The docking mechanism is used to position the clamping assembly.

[0029] In this embodiment, the positioning mechanism includes a sliding rod 401, which is slidably disposed in the first slide groove 302. A translation seat 402 is bolted to the top of the sliding rod 401. Guide rods 403 are slidably connected to the two translation seats 402. The guide rods 403 are bolted to the base 101. Two symmetrically arranged connecting seats 404 are slidably connected to the top of the translation seats 402. Mounting bolts 406 are bolted to the connecting seats 404. A positioning pin 407 is detachably connected to the mounting bolt 406. The positioning pin 407 and the mounting bolt 406 are threaded together. The positioning pin 407 can be installed and removed by rotating on the mounting bolt 406. After the first hydraulic cylinder 201 and the second hydraulic cylinder 202 clamp and fix the workpiece to be processed, the positioning pin 407 can be rotated off the mounting bolt 406 to prevent the positioning pin 407 from obstructing the processing operation.

[0030] In this embodiment, a bidirectional lead screw 405 is rotatably connected to the translation seat 402. The bidirectional lead screw 405 is threadedly connected to two connecting seats 404 respectively. The setting of the second bidirectional lead screw 405 can change the distance between the two positioning posts 407 to adapt to the positioning of parts to be processed with different thicknesses.

[0031] In this embodiment, the docking mechanism includes several annularly distributed docking plates 501. The docking plates 501 are movably disposed inside the base 101. A connecting shaft 502 is bolted to the bottom of the docking plates 501. The connecting shaft 502 is slidably disposed in the second slide groove 303. The first slide groove 302 and the second slide groove 303 are located in the same annular area. When the rotating plate 301 rotates, due to the arrangement of the first slide groove 302 and the second slide groove 303, the sliding rod 401 in the first slide groove 302 and the connecting shaft 502 in the second slide groove 303 can move synchronously and are equidistant from the center of the base 101. A slider 503 is bolted to the bottom of the connecting shaft 502. A base plate 305 is bolted to the inside of the base 101. Several annularly distributed straight grooves 306 are opened on the top of the base plate 305. The slider 503 is slidably disposed in the straight grooves 306.

[0032] In this embodiment, a rotating handle 304 is bolted to the side of the rotating plate 301, and a mounting groove 102 is provided on the side of the base 101, with the rotating handle 304 movably disposed in the mounting groove 102.

[0033] In this embodiment, the clamping assembly includes a connecting plate 203. The connecting plate 203 is bolted to the output ends of the first hydraulic cylinder 201 and the second hydraulic cylinder 202. An abutment block 204 is bolted to the bottom of the connecting plate 203. A clamping plate 205 is bolted to one side of the connecting plate 203. An anti-slip pad 206 is adhered to the side of the clamping plate 205 away from the connecting plate 203. The anti-slip pad 206 has a certain elasticity and can fit against the surface of the part to be processed.

[0034] Working Principle: When using this device, first, rotate the handle 304 according to the wall thickness and dimensions of the part to be processed. The handle 304 drives the rotating plate 301 to rotate. When the rotating plate 301 rotates, the sliding rod 401 located in the first slide groove 302 and the second slide groove 303 moves synchronously with the connecting shaft 502. The sliding rod 401 drives the translation seat 402 to translate along the direction of the guide rod 403. The guide rod 403 drives the connecting seat 404, the mounting bolt 406, and the positioning pin 407 to move, so that the distance between the two sets of positioning pins 407 is the same as the diameter of the part to be processed. At this time, the part to be processed can be just locked between each set of positioning pins 407. Simultaneously, due to the cooperation of the straight groove 306 and the second slide groove 303, the connecting shaft 502 and the slider 503 can move along the direction of the straight groove 306, so that the connecting shaft 502 and the slider 503 can move together. The moving rod 401 is always located on the same circle, so the part to be processed will also be at the top position of the slider 503. At this time, the first hydraulic cylinder 201 and the second hydraulic cylinder 202 are activated. The output shafts of the first hydraulic cylinder 201 and the second hydraulic cylinder 202 push the clamping assembly, and the corresponding connecting plates 203 move closer to each other. The connecting plates 203 drive the abutment block 204 and the clamping plate 205 to move until the abutment block 204 abuts against the connecting shaft 502. The corresponding clamping plate 205 moves to the maximum distance. At this time, the anti-slip pad 206 on the clamping plate 205 will clamp the surface of the part to be processed from the inside and outside, and the force inside and outside is the same, which can play a stable clamping role and will not cause deformation of the part to be processed. After the clamping is stable, the positioning pin 407 can be removed from the mounting pin 406 for subsequent processing operations.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A thin-walled part positioning tool, comprising a base (101), a support (103) fixedly connected to the top of the base (101), and a mounting plate (104) fixedly connected to the end of the support (103) away from the base (101), characterized in that: A clamping mechanism is provided on the base (101). The clamping mechanism includes a set of hydraulic cylinders No. 1 (201) and No. 2 (202) arranged in a ring. The No. 1 hydraulic cylinder (201) is fixedly connected to the top of the base (101), and the No. 2 hydraulic cylinder (202) is fixedly connected to the top of the mounting plate (104). The No. 1 hydraulic cylinder (201) and the No. 2 hydraulic cylinder (202) are arranged opposite to each other. The output ends of the No. 1 hydraulic cylinder (201) and the No. 2 hydraulic cylinder (202) are fixedly connected to clamping components. A rotating mechanism is provided inside the base (101). The rotating mechanism includes a rotating plate (301). The rotating plate (301) is rotatably connected inside the base (101). Two symmetrically arranged No. 1 sliding grooves (302) are opened on the rotating plate (301), and several ring-arranged No. 2 sliding grooves (303) are opened on the No. 1 sliding grooves (302). A set of symmetrically arranged positioning mechanisms are movably arranged on the first slide groove (302) of the rotating plate (301). The positioning mechanisms are used to position thin-walled parts. A docking mechanism is movably arranged in the second slide groove (303) of the rotating plate (301). The docking mechanism is used to position the clamping assembly.

2. The thin-walled part positioning fixture of claim 1, wherein: The positioning mechanism includes a sliding rod (401), which is slidably disposed in the first slide groove (302). A translation seat (402) is fixedly connected to the top of the sliding rod (401). Guide rods (403) are slidably connected to the two translation seats (402). The guide rods (403) are fixedly connected to the base (101). Two symmetrically arranged connecting seats (404) are slidably connected to the top of the translation seats (402). Mounting bolts (406) are fixedly connected to the connecting seats (404). A positioning post (407) is detachably connected to the mounting bolts (406).

3. The thin-walled part positioning fixture of claim 2, wherein: A bidirectional lead screw (405) is rotatably connected to the translation seat (402), and the bidirectional lead screw (405) is threadedly connected to the two connecting seats (404) respectively.

4. The thin-walled part positioning fixture of claim 1, wherein: The docking mechanism includes several annularly distributed docking plates (501), which are movably disposed inside the base (101). A connecting shaft (502) is fixedly connected to the bottom of the docking plate (501), and the connecting shaft (502) is slidably disposed in the second slide groove (303). The first slide groove (302) and the second slide groove (303) are located in the same annular area. A slider (503) is fixedly connected to the bottom of the connecting shaft (502). A base plate (305) is fixedly connected inside the base (101). Several annularly distributed straight grooves (306) are opened on the top of the base plate (305), and the slider (503) is slidably disposed in the straight grooves (306).

5. The thin-walled part positioning fixture of claim 1, wherein: The rotating plate (301) is fixedly connected to a rotating handle (304) on its side, and the base (101) is provided with a mounting groove (102) on its side, and the rotating handle (304) is movably disposed in the mounting groove (102).

6. The thin-walled part positioning fixture of claim 1, wherein: The clamping assembly includes a connecting plate (203), which is fixedly connected to the output ends of the first hydraulic cylinder (201) and the second hydraulic cylinder (202). An abutment block (204) is fixedly connected to the bottom of the connecting plate (203), and a clamping plate (205) is fixedly connected to one side of the connecting plate (203). An anti-slip pad (206) is fixedly connected to the side of the clamping plate (205) away from the connecting plate (203).

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