Universal high-precision positioning clamp

Abstract

The utility model discloses a universal high-precision positioning clamp, and relates to the technical field of positioning clamps. The device comprises a clamping adjusting assembly and limiting fixing assemblies which are symmetrically arranged, the clamping adjusting assembly is provided with two transmission adjusting blocks which are symmetrically arranged in a sliding mode, and the limiting fixing assemblies are fixedly installed on the upper surfaces of the corresponding transmission adjusting blocks. The limiting and fixing assembly comprises a plurality of limiting and fixing columns capable of horizontally moving and a plurality of limiting and adjusting plates rotationally arranged. The two transmission adjusting blocks synchronously move to drive one side face of the limiting and fixing assembly to be attached to the surface of an object to be clamped for clamping, the limiting adjusting plate moves to drive the limiting and fixing column to horizontally move, and the limiting and fixing column horizontally moves to be attached to the object to be clamped. And the limiting adjusting plate rotates to drive other limiting fixing columns which are not tightly attached to the limiting adjusting plate to continue to horizontally move till all the limiting fixing columns are tightly attached to the surface of the to-be-clamped object, clamping and fixing of the object with the uneven surface are achieved, and the object is prevented from moving during machining.

Description

Technical Field

[0001] The utility model belongs to the technical field related to positioning fixtures, and particularly relates to a universal high-precision positioning fixture. Background Art

[0002] Positioning fixtures are widely used in various production links such as mechanical manufacturing, processing and assembly. Its main task is to accurately position and fix the workpiece during the production process to ensure the processing accuracy and product quality of the workpiece and prevent the workpiece from moving or deforming during the processing or assembly process. Its design, manufacturing and use can improve processing accuracy, ensure product quality, and improve production efficiency.

[0003] Common positioning fixtures use two clamping blocks that move horizontally and move close to each other at the same time, until they fit tightly with both sides of the object to be clamped to complete the clamping and fixing. However, when the surface of the object is uneven, the clamping block fits with the most convex point, and the contact area is small, which can easily cause unstable clamping and easy movement during subsequent processing, affecting the processing operation. To this end, we provide a universal high-precision positioning fixture to solve the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a universal high-precision positioning fixture, which solves the problems in the above-mentioned background technology through the specific structural design of the clamping adjustment component and the limit fixing component.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model discloses a universal high-precision positioning fixture, comprising a clamping adjustment component and a symmetrically arranged limit fixing component, wherein the clamping adjustment component comprises two symmetrically slidably arranged transmission adjustment blocks, the two transmission adjustment blocks synchronously move to drive the two limit fixing components to clamp; the limit fixing component is fixedly mounted on the upper surface of the corresponding transmission adjustment block, and moves synchronously with the movement of the transmission adjustment block to clamp, the limit fixing component comprises a plurality of horizontally movable limit fixing columns and a plurality of rotatably arranged limit adjustment plates, the two ends of the limit adjustment plate are respectively tightly attached to the corresponding two limit fixing columns, the limit adjustment plate rotates to drive the limit fixing column to move horizontally, and the limit fixing column moves horizontally until it is tightly attached to the side of the object to be clamped.

[0007] The utility model is further configured as follows: the clamping adjustment component also includes a clamping support platform, a clamping guide slot is provided inside the clamping support platform, and a transmission guide slot connected to the clamping guide slot is provided on the upper surface of the clamping support platform; the transmission adjustment block is slidably arranged inside the clamping guide slot, and a bidirectional screw is rotatably connected between the two inner side walls of the clamping guide slot, the transmission adjustment block and the bidirectional screw are threadedly matched, and a first drive motor is fixedly installed on one side of the clamping support platform, and the output shaft of the first drive motor is fixedly connected to the bidirectional screw.

[0008] The utility model is further configured as follows: the limit fixing assembly includes a hollow support block fixedly connected to the upper surface of the transmission adjustment block, and the limit fixing column slides through one side of the hollow support block; the hollow support block is provided with adjustment grooves on two inner side walls relative to each other, and a transmission slider is slidably arranged inside the adjustment groove, and a transmission support column is fixedly connected between the two transmission sliders.

[0009] The utility model is further configured as follows: a transmission support block is symmetrically arranged on the peripheral side surface of the transmission support column, a first return spring is fixedly connected between the two transmission support blocks, a first adjusting link is rotatably connected to the peripheral side surface of the transmission support block, and the first adjusting link is rotatably connected to an inner side wall of the hollow support block through a first ear plate; a second adjusting link is symmetrically rotatably connected to the peripheral side surface of the transmission support block, and the second adjusting link is rotatably connected to a U-shaped transmission plate through a second ear plate, and U-shaped adjustment plates are rotatably connected at both ends of the U-shaped transmission plate; a second drive motor is fixedly installed on the upper surface of the hollow support block, and the output shaft of the second drive motor is fixedly connected to the corresponding second adjusting link.

[0010] The utility model is further configured such that the limit adjustment plates are rotatably connected to one end of the U-shaped adjustment plate, one end of the limit fixing column is fixedly connected to the limit disc, a second return spring is fixedly connected between the limit disc and the hollow support block, and the second return spring is sleeved on the outside of the limit fixing column.

[0011] The utility model has the following beneficial effects:

[0012] The utility model sets a clamping adjustment component and a limit fixing component, starts the first driving motor to drive the bidirectional screw to rotate, and under the cooperation of the threads of the bidirectional screw and the transmission adjustment block, the two transmission adjustment blocks are synchronously moved horizontally and approached to each other, driving the hollow support blocks to synchronously move horizontally and approach each other until the sides of the two hollow support blocks are in close contact with the surface of the object to be clamped, thereby achieving initial clamping of the object and avoiding movement during subsequent operations.

[0013] The U-shaped transmission plate can move horizontally to drive the U-shaped adjustment plate and the limit adjustment plate to move horizontally synchronously, and the limit adjustment plate can push the limit fixing column to move horizontally until the limit fixing column is in close contact with the surface of the object to be clamped. The U-shaped adjustment plate and the limit adjustment plate can rotate to drive other limit fixing columns to continue to move horizontally until all the limit fixing columns are in close contact with the surface of the object to be clamped, thereby achieving tight clamping of objects with uneven outer surfaces, stably clamping each part, and meeting the needs of clamping and fixing objects with different appearances.

[0014] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a structural schematic diagram of a universal high-precision positioning fixture.

[0017] Figure 2 It is a structural schematic diagram of the clamping and adjusting assembly in the utility model.

[0018] Figure 3 for Figure 2 Longitudinal structural section view.

[0019] Figure 4 It is a structural schematic diagram of the limit fixing component in the utility model.

[0020] Figure 5 for Figure 4 Horizontal structural section view.

[0021] Figure 6 for Figure 5 Schematic diagram of the structure from another angle.

[0022] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0023] 1-clamping adjustment component, 101-transmission adjustment block, 102-clamping support platform, 103-clamping guide slide, 104-bidirectional screw, 105-first drive motor, 2-limit fixing component, 201-limit fixing column, 202-limit adjustment plate, 203-hollow support block, 204-adjustment slide, 205-transmission support column, 206-first return spring, 207-first adjustment connecting rod, 208-second adjustment connecting rod, 209-U-shaped transmission plate, 210-U-shaped adjustment plate, 211-limiting disc, 212-second return spring. DETAILED DESCRIPTION

[0024] 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 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.

[0025] For specific embodiment 1, please refer to Figure 1-6 The utility model is a universal high-precision positioning fixture, including a clamping adjustment component 1 and a symmetrically arranged limit fixing component 2. Specifically, the clamping adjustment component 1 includes two symmetrically slidably arranged transmission adjustment blocks 101, and the two transmission adjustment blocks 101 move synchronously to drive the two limit fixing components 2 to clamp; the limit fixing component 2 is fixedly installed on the upper surface of the corresponding transmission adjustment block 101, and the movement of the transmission adjustment block 101 drives the limit fixing component 2 to move synchronously, and clamps synchronously with the movement of the transmission adjustment block 101. The limit fixing component 2 includes a plurality of horizontally movable limit fixing columns 201 and a plurality of rotatably arranged limit adjustment plates 202, the limit adjustment plates 202 correspond to the limit fixing columns 201 (that is, two limit fixing columns 201 correspond to one limit adjustment plate 202), and the two ends of the limit adjustment plate 202 are respectively close to the two corresponding limit fixing columns 201, and the limit adjustment plate 202 rotates to drive the limit fixing column 201 to move horizontally, and the limit fixing column 201 moves horizontally until it is close to the side of the object to be clamped.

[0026] The operation process of this embodiment is: placing the object to be clamped between the two limit fixing components 2, driving the two transmission adjustment blocks 101 to move horizontally synchronously and approach each other, driving the two limit fixing components 2 to move synchronously and approach each other, until one side of the limit fixing component 2 contacts the surface of the object to be clamped, and then driving the limit adjustment plate 202 to move. Since the limit adjustment plate 202 is in close contact with the limit fixing column 201, the corresponding limit fixing column 201 is pushed to move horizontally until the limit fixing column 201 contacts the surface box of the object to be clamped. The limit fixing column 201 limits the movement of the limit adjustment plate 202, causing the limit adjustment plate 202 to rotate, pushing another limit fixing column 201 to move horizontally until all the limit fixing columns 201 are in close contact with the surface of the object to be clamped, thereby achieving clamping and fixing of the object.

[0027] For specific embodiment 2, please refer to Figure 1-6 On the basis of the specific embodiment 1, specifically, the clamping adjustment component 1 also includes a clamping support platform 102, a clamping guide slot 103 is provided inside the clamping support platform 102, and a transmission guide slot connected to the clamping guide slot 103 is provided on the upper surface of the clamping support platform 102.

[0028] Furthermore, the transmission adjustment block 101 is slidably arranged inside the clamping guide slot 103, and the transmission adjustment block 101 slides inside the clamping guide slot 103. The clamping guide slot 103 is rotatably connected with a bidirectional screw 104 between two inner side walls. The bidirectional screw 104 is a structure with a bidirectional thread groove stacked on the screw. The transmission adjustment block 101 and the bidirectional screw 104 are threadedly matched. The rotation of the bidirectional screw 104 drives the two transmission adjustment blocks 101 to move synchronously in opposite directions. A first driving motor 105 is fixedly installed on one side of the clamping support platform 102. The output shaft of the first driving motor 105 is fixedly connected to the bidirectional screw 104, and the first driving motor 105 is used to drive the bidirectional screw 104 to rotate.

[0029] The operation process of this embodiment is: the bidirectional screw 104 is driven to rotate by the first drive motor 105, and under the action of the threaded cooperation between the bidirectional screw 104 and the two transmission adjustment blocks 101, the two transmission adjustment blocks 101 move synchronously in opposite directions (that is, move closer to each other or move away from each other), thereby causing the two transmission adjustment blocks 101 to slide along the inside of the guide groove 103.

[0030] For specific embodiment 3, please refer to Figure 1-6On the basis of the first and second specific embodiments, specifically, the position limiting and fixing assembly 2 includes a hollow support block 203 fixedly connected to the upper surface of the transmission adjustment block 101, the hollow support block 203 moves horizontally synchronously with the transmission adjustment block 101, the position limiting and fixing column 201 slides through one side of the hollow support block 203, and in the initial state, one end face of the position limiting and fixing column 201 is flush with one side of the hollow support block 203; the hollow support block 203 is provided with adjustment grooves 204 on the two inner side walls relative to each other, and a transmission slider is slidably arranged inside the adjustment groove 204, and a transmission support column 205 is fixedly connected between the two transmission sliders.

[0031] Furthermore, transmission support blocks are symmetrically arranged on the side of the transmission support column 205, one transmission support block is fixedly connected to the side of the transmission support column 205, and the other transmission support block is slidably arranged on the side of the transmission support column 205, and a first return spring 206 is fixedly connected between the two transmission support blocks, and a first adjusting link 207 is rotatably connected to the side of the transmission support block, and the first adjusting link 207 is rotatably connected to an inner wall of the hollow support block 203 through a first ear plate. When the transmission support block moves, the first adjusting link 207 rotates, and the transmission support column 205 drives the transmission slider to slide horizontally along the corresponding adjusting slot 204; the side of the transmission support block faces It is rotatably connected with a second adjusting link 208, and the second adjusting link 208 is rotatably connected with a U-shaped transmission plate 209 through a second ear plate. The two second adjusting links 208 rotate, driving the transmission support block to move, and the transmission support column 205 drives the transmission slider to slide horizontally along the corresponding adjusting slide groove 204, and at the same time pushes the U-shaped transmission plate 209 to move horizontally. Both ends of the U-shaped transmission plate 209 are rotatably connected with U-shaped adjustment plates 210; a second driving motor is fixedly installed on the upper surface of the hollow support block 203, and the output shaft of the second driving motor is fixedly connected to the corresponding second adjusting link 208, and the second driving motor is used to drive the corresponding second adjusting link 208 to rotate.

[0032] Furthermore, the limit adjustment plate 202 is rotatably connected to one end of the U-shaped adjustment plate 210, and one end of the limit fixing column 201 is fixedly connected to the limit disk 211. A second return spring 212 is fixedly connected between the limit disk 211 and the hollow support block 203. The second return spring 212 is sleeved on the outside of the limit fixing column 201. The limit disk 211 is driven by an external force to move the limit fixing column 201 horizontally, compressing the second return spring 212. The external force disappears, and under the action of elastic recovery, the limit fixing column 201 moves horizontally in the opposite direction to return to its original position.

[0033] The operation process of this embodiment is as follows: the hollow support block 203 moves horizontally synchronously with the transmission adjustment block 101 and approaches each other until one side of the two transmission adjustment blocks 101 is in close contact with the surface of the object to be clamped, the second drive motor is started to drive the corresponding second adjustment link 208 to rotate, and the second adjustment link 208 pushes the U-shaped transmission plate 209 to move horizontally. During this process, the second adjustment link 208 rotates and drives the corresponding transmission support block to slide along the side surface of the transmission support column 205, the first return spring 206 is squeezed, and at the same time the first adjustment link 207 rotates to push the transmission support column 205 to move horizontally, and the transmission slide block slides horizontally along the corresponding adjustment slot 204. When the U-shaped transmission plate 209 moves horizontally, it drives the U-shaped adjustment plate 210 and the limit adjustment plate 202 to move horizontally synchronously. At the same time, the limit adjustment plate 202 pushes the corresponding limit fixing column 201 to move horizontally through the limit disc 211, and the second return spring 212 is compressed until the limit fixing column 201 is in close contact with the surface of the object to be clamped. Since the other limit fixing columns 201 are not in close contact with the surface of the object to be clamped, as the U-shaped transmission plate 209 continues to move horizontally, the U-shaped adjustment plate 210 and the limit adjustment plate 202 rotate, driving the other limit fixing columns 201 to continue to move horizontally until all the limit fixing columns 201 are in close contact with the surface of the object to be clamped.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A universal high-precision positioning fixture, comprising a clamping and adjusting component (1) and a symmetrically arranged limiting and fixing component (2), characterized in that: The clamping adjustment component (1) comprises two transmission adjustment blocks (101) that are symmetrically slidably arranged, and the two transmission adjustment blocks (101) move synchronously to drive the two limit fixing components (2) to clamp; The limit fixing assembly (2) is fixedly mounted on the upper surface of the corresponding transmission adjustment block (101), and moves synchronously with the movement of the transmission adjustment block (101) to clamp. The limit fixing assembly (2) comprises a plurality of horizontally movable limit fixing columns (201) and a plurality of rotatably arranged limit adjustment plates (202). The two ends of the limit adjustment plates (202) are respectively in close contact with the corresponding two limit fixing columns (201). The limit adjustment plates (202) rotate to drive the limit fixing columns (201) to move horizontally. The limit fixing columns (201) move horizontally until they are in close contact with the side of the object to be clamped.

2. A universal high-precision positioning fixture according to claim 1, characterized in that: The clamping adjustment assembly (1) further comprises a clamping support platform (102), a clamping guide slot (103) being provided inside the clamping support platform (102), and a transmission guide slot being provided on the upper surface of the clamping support platform (102) and being connected to the clamping guide slot (103).

3. A universal high-precision positioning fixture according to claim 2, characterized in that: The transmission adjustment block (101) is slidably arranged inside the clamping guide slide groove (103); a bidirectional screw rod (104) is rotatably connected between two inner side walls of the clamping guide slide groove (103); the transmission adjustment block (101) and the bidirectional screw rod (104) are threadedly matched; a first driving motor (105) is fixedly mounted on one side of the clamping support platform (102); and an output shaft of the first driving motor (105) is fixedly connected to the bidirectional screw rod (104).

4. A universal high-precision positioning fixture according to claim 3, characterized in that: The position-limiting fixing assembly (2) comprises a hollow support block (203) fixedly connected to the upper surface of the transmission adjustment block (101), and the position-limiting fixing column (201) slides through a side surface of the hollow support block (203).

5. A universal high-precision positioning fixture according to claim 4, characterized in that: The hollow support block (203) is provided with adjustment slots (204) relative to the two inner side walls, a transmission slide block is slidably arranged inside the adjustment slot (204), and a transmission support column (205) is fixedly connected between the two transmission slide blocks.

6. A universal high-precision positioning fixture according to claim 5, characterized in that: Transmission support blocks are symmetrically arranged on the peripheral side of the transmission support column (205); a first return spring (206) is fixedly connected between the two transmission support blocks; a first adjustment link (207) is rotatably connected to the peripheral side of the transmission support block; the first adjustment link (207) is rotatably connected to an inner side wall of the hollow support block (203) via a first ear plate.

7. A universal high-precision positioning fixture according to claim 6, characterized in that: The transmission support block is symmetrically rotatably connected to a second adjustment link (208) on a peripheral side surface; the second adjustment link (208) is rotatably connected to a U-shaped transmission plate (209) via a second ear plate; and both ends of the U-shaped transmission plate (209) are rotatably connected to U-shaped adjustment plates (210); A second drive motor is fixedly mounted on the upper surface of the hollow support block (203), and an output shaft of the second drive motor is fixedly connected to a corresponding second adjustment connecting rod (208).

8. A universal high-precision positioning fixture according to claim 7, characterized in that: The limit adjustment plates (202) are rotatably connected to one end of the U-shaped adjustment plate (210), one end of the limit fixing column (201) is fixedly connected to the limit disc (211), a second return spring (212) is fixedly connected between the limit disc (211) and the hollow support block (203), and the second return spring (212) is sleeved on the outside of the limit fixing column (201).

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