Auxiliary positioning device for large workpiece

Abstract

The utility model relates to the technical field of workpiece clamping, in particular to a large workpiece auxiliary positioning device which comprises a working platform with an annular outline, a plurality of guide grooves and installation clamping grooves are formed in the side wall of the working platform, and a plurality of auxiliary idler wheels used for reducing the difficulty of moving a workpiece are further arranged at the top end of the working platform. A plurality of positioning assemblies are detachably arranged above the working platform, guide sliding blocks sliding in the guide grooves are arranged at the bottom ends of the positioning assemblies, and adjusting pull rods used for fixing the positioning assemblies are arranged on the upper surfaces, located on the working platform, of the positioning assemblies. The positioning assembly achieves the purpose of being attached to a large workpiece under the action that the upper clamping block surrounds the lower guide block, the tooth block at the top end of the locking block is connected with the tooth-shaped groove in the top end of the installation clamping groove in a clamped mode, the two side faces of the locking block abut against the inclined end faces, the workpiece locking and fixing effects are achieved, stable supporting and positioning are provided for the large workpiece, and the workpiece clamping device is simple in structure and convenient to use. Movement and deformation can be reduced, and the stability of the machining process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamping, in particular to an auxiliary positioning device for large workpieces. Background Art

[0002] During the processing of large workpieces, due to their large size and heavy weight, it is often difficult to achieve precise positioning. Large workpieces are prone to deformation or movement under the influence of factors such as cutting force and gravity during processing, resulting in a decline in processing quality.

[0003] Existing auxiliary positioning devices may have problems with poor processing stability. When facing large parts with irregular surfaces, traditional positioning devices may not be able to ensure the clamping force. Insufficient clamping force will lead to unstable workpiece positions, increasing processing errors, and may even cause the workpiece to fall off or the tool to break. Insufficient clamping force may also cause the workpiece to suddenly fall off or fly out during processing, posing safety hazards to operators and equipment.

[0004] Therefore, it is necessary to invent an auxiliary positioning device for large workpieces to solve the above problems. Content of the Utility Model

[0005] To solve the deficiencies of the prior art, the purpose of the present utility model is to provide an auxiliary positioning device for large workpieces, which solves the problem that the auxiliary positioning device may have poor processing stability during actual use. When facing large parts with irregular surfaces, traditional positioning devices may not be able to ensure the clamping force. Insufficient clamping force will lead to unstable workpiece positions, increasing processing errors, and may even cause the workpiece to fall off or the tool to break. Insufficient clamping force may also cause the workpiece to suddenly fall off or fly out during processing, posing safety hazards to operators and equipment.

[0006] To achieve the above objectives, the present utility model adopts the following technical solutions:

[0007] An auxiliary positioning device for large workpieces includes a working platform with an annular contour. A plurality of guiding grooves and installation chucks are provided on the side wall of the working platform. A plurality of auxiliary rollers for reducing the difficulty of moving the workpiece are further provided at the top of the working platform. A plurality of positioning components that can slide towards the center of the working platform are detachably arranged above the working platform. A guiding slider that slides inside the guiding groove is provided at the bottom of the positioning component. An adjusting pull rod for fixing the positioning component is provided on the upper surface of the working platform where the positioning component is located. A locking block that can slide longitudinally is provided inside the positioning component for locking the positioning component.

[0008] As a preferred embodiment of the present utility model, the installation slot is used for the locking block to slide. A plurality of tooth-shaped grooves are opened at the top of the installation slot. A plurality of tooth blocks that can be engaged with the tooth-shaped grooves are provided at the top of the locking block. Inclined end faces for increasing the locking friction are further provided on both side walls of the installation slot. The inclination angle of the inclined end face is adapted to the two end faces of the locking block. When the upper surface of the locking block fits with the top of the installation slot, the inclined end face fits with both side walls of the locking block.

[0009] As a preferred embodiment of the present utility model, a connecting column is connected to the top of the locking block. The top of the connecting column penetrates through the positioning assembly. A positioning ring is sleeved on the part of the connecting column located inside the positioning assembly. The positioning assembly includes an upper clamping block and a lower guiding block. A limiting sliding groove for the connecting column and the positioning ring to slide longitudinally is provided inside the upper clamping block.

[0010] As a preferred embodiment of the present utility model, a guiding slider is provided at the bottom of the lower guiding block. An annular sliding groove for the upper clamping block to rotate is opened at the top of the lower guiding block. A guiding clamping block located inside the annular sliding groove is provided at the bottom of the upper clamping block.

[0011] As a preferred embodiment of the present utility model, a through groove for the adjusting pull rod to slide is opened at the center of the bottom of the upper clamping block. An upper end face is provided at the top of the adjusting pull rod. End faces inclined downward are provided at both ends of the upper end face. The adjusting pull rod can slide horizontally. During the sliding process of the adjusting pull rod, it can push the positioning ring to slide up and down. A lower end face is provided at the bottom end of the positioning ring.

[0012] As a preferred embodiment of the present utility model, an end face two is provided on the side of the adjusting pull rod facing the large workpiece. An end face one is provided on the side of the upper clamping block facing the large workpiece. Damping blocks can be detachably installed on both the end face two and the end face one. When the end face two is squeezed by the workpiece and is flush with the end face one, the top of the upper end face fits with the lower end face of the positioning ring, driving the locking block to be clamped with the installation slot.

[0013] As a preferred embodiment of the present utility model, a plurality of ejecting springs are provided on the side of the adjusting pull rod facing the connecting column. One end of the ejecting spring is provided with a spring connecting block. A pulling block is provided on the side of the adjusting pull rod away from the large workpiece.

[0014] In the above technical solution, the technical effects and advantages provided by the present utility model:

[0015] In the present utility model, during use, when facing irregular large workpieces, by abutting a plurality of positioning components against the large workpiece, under the action of the upper clamping block around the lower guiding block, the purpose of fitting with the large workpiece is achieved. During the contact with the large workpiece, its side surface squeezes the adjusting pull rod, making end face two flush with end face one. At this time, the upper end face pushes out the lower end face of the positioning ring, and the positioning ring drives the connecting column and the locking block to slide upward. The tooth block at the top of the locking block is engaged with the tooth-shaped groove at the top of the installation card slot, and the two side surfaces of the locking block are abutted against the inclined end face, achieving the effect of locking and fixing the workpiece, providing stable support and positioning for the large workpiece, reducing movement and deformation, and improving the stability of the processing process. After the workpiece is processed, by pulling the pulling block, the adjusting pull rod slides toward the side away from the workpiece, realizing the descent of the positioning ring, thereby making the positioning component away from the workpiece, achieving the disassembly of the positioning device. The operation is simple. Each group of positioning components is independently arranged, facilitating the replacement of a single component, and effectively reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the partial sectional structure of the whole of the present utility model;

[0018] Figure 3 is a schematic diagram of the structure of the adjusting pull rod of the present utility model;

[0019] Figure 4 is a schematic diagram of the partial sectional structure of the positioning component of the present utility model;

[0020] Figure 5 is a schematic diagram of the top view of the present utility model with the upper clamping block removed.

[0021] Description of the reference numerals: 1, working platform; 101, guiding groove; 102, installation card slot; 103, auxiliary roller; 104, tooth-shaped groove; 105, inclined end face; 2, positioning component; 201, upper clamping block; 202, lower guiding block; 203, guiding slider; 204, limiting sliding groove; 205, guiding clamping block; 206, end face one; 207, annular sliding groove; 3, locking block; 301, tooth block; 4, adjusting pull rod; 401, damping block; 402, end face two; 403, upper end face; 404, pulling block; 405, ejecting spring; 406, spring connecting block; 5, connecting column; 6, positioning ring; 601, lower end face. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following further describes the present utility model with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present utility model and cannot be used to limit the protection scope of the present utility model.

[0023] The present utility model provides an auxiliary positioning device for large workpieces as shown in Figures 1-5 , which includes a working platform 1 with an annular contour. A plurality of guiding grooves 101 and mounting clamping grooves 102 are formed in the side wall of the working platform 1. A plurality of auxiliary rollers 103 for reducing the difficulty of moving the workpiece are further arranged at the top end of the working platform 1. A plurality of positioning components 2 that can slide towards the center of the working platform 1 are detachably arranged above the working platform 1. A guiding slider 203 that slides inside the guiding groove 101 is arranged at the bottom end of the positioning component 2. An adjusting pull rod 4 for fixing the positioning component 2 is arranged on the upper surface of the working platform 1 where the positioning component 2 is located. A locking block 3 that can slide longitudinally is arranged inside the positioning component 2 for locking the positioning component 2. The arrangement of the auxiliary rollers 103 is used to reduce the difficulty of moving large workpieces, and can more easily rotate the angle of the workpiece, thereby ensuring the clamping stability of the positioning component 2.

[0024] The mounting clamping groove 102 is used for the locking block 3 to slide. A plurality of tooth-shaped grooves 104 are formed at the top end of the mounting clamping groove 102. A plurality of tooth blocks 301 that can be engaged with the tooth-shaped grooves 104 are arranged at the top end of the locking block 3. Inclined end faces 105 for increasing the locking friction are further arranged on both side walls of the mounting clamping groove 102. The inclination angle of the inclined end face 105 is adapted to the two end faces of the locking block 3. When the upper surface of the locking block 3 is in contact with the top end of the mounting clamping groove 102, the inclined end face 105 is in contact with both side walls of the locking block 3. The combination of the tooth-shaped groove 104 and the tooth block 301 can effectively prevent the mounting and locking block 3 from sliding, thereby ensuring the locking effect.

[0025] A connecting column 5 is connected to the top end of the locking block 3. The top end of the connecting column 5 penetrates through the positioning component 2. A positioning ring 6 is sleeved on the part of the connecting column 5 located inside the positioning component 2. The positioning component 2 includes an upper clamping block 201 and a lower guiding block 202. A limiting sliding groove 204 for the connecting column 5 and the positioning ring 6 to slide longitudinally is arranged inside the upper clamping block 201. One end of the connecting column 5 located at the lower guiding block 202 has a non-circular contour, which avoids driving the connecting column 5 to rotate during the rotation of the upper clamping block 201, thereby causing the locking block 3 to deflect and affecting the clamping effect, and avoiding economic losses.

[0026] A guiding slider 203 is arranged at the bottom end of the lower guiding block 202. An annular sliding groove 207 for the upper clamping block 201 to rotate is formed at the top end of the lower guiding block 202. A guiding clamping block 205 that slides inside the annular sliding groove 207 is arranged at the bottom end of the upper clamping block 201.

[0027] A through groove for the adjusting pull rod 4 to slide is formed at the center of the bottom of the upper clamping block 201. An upper end face 403 is provided at the top end of the adjusting pull rod 4. Both ends of the upper end face 403 are provided with end faces inclined downward. The adjusting pull rod 4 can slide horizontally. During the sliding process of the adjusting pull rod 4, it can push the positioning ring 6 to slide up and down. The bottom end of the positioning ring 6 has a lower end face 601. A return spring can also be provided at the top end of the positioning ring 6. When the adjusting pull rod 4 moves away from the positioning ring 6, it can drive the locking block 3 to disengage more quickly, avoiding the situation that the connecting column 5 cannot descend in time and affecting the working efficiency.

[0028] An end face two 402 is provided on the side of the adjusting pull rod 4 facing the large workpiece. An end face one 206 is provided on the side of the upper clamping block 201 facing the large workpiece. Damping blocks 401 can be detachably installed on both the end face two 402 and the end face one 206. When the end face two 402 is squeezed by the workpiece and is flush with the end face one 206, the top end of the upper end face 403 is in contact with the lower end face 601 of the positioning ring 6, driving the locking block 3 to be clamped with the installation slot 102. The setting of the damping block 401 is used to avoid scratching the workpiece and can also compensate for the position error between the tooth block 301 and the tooth-shaped groove 104 to ensure a better locking effect.

[0029] A plurality of ejecting springs 405 are provided on the side of the adjusting pull rod 4 facing the connecting column 5. One end of each ejecting spring 405 is provided with a spring connecting block 406. A pulling block 404 is provided on the side of the adjusting pull rod 4 away from the large workpiece. One end of the spring connecting block 406 is adapted to the outer surface of the connecting column 5. The setting of the spring connecting block 406 can also achieve automatic reset and reduce the operation difficulty.

[0030] In the process of using the present utility model, when facing an irregular large workpiece, by abutting a plurality of positioning components 2 against the large workpiece, under the action of the upper clamping block 201 around the lower guiding block 202, the purpose of fitting with the large workpiece is achieved. During the contact with the large workpiece, its side squeezes the adjusting pull rod 4, making the end face two 402 flush with the end face one 206. At this time, the upper end face 403 ejects the lower end face 601 of the positioning ring 6. The positioning ring 6 drives the connecting column 5 and the locking block 3 to slide upward. The tooth block 301 at the top end of the locking block 3 is clamped with the tooth-shaped groove 104 at the top end of the installation slot 102. The two side faces of the locking block 3 are in contact with the inclined end faces 105, achieving the effect of locking and fixing the workpiece, providing stable support and positioning for the large workpiece, reducing movement and deformation, and improving the stability of the processing process. After the workpiece is processed, by pulling the pulling block 404, the adjusting pull rod 4 slides toward the side away from the workpiece, realizing the descent of the positioning ring 6, thereby making the positioning components 2 away from the workpiece and realizing the disassembly of the positioning device. The operation is simple. Each group of positioning components 2 is independently arranged, facilitating the replacement of a single component and effectively reducing the maintenance cost.

[0031] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. An auxiliary positioning device for large workpieces, characterized in that: A working platform (1) including an annular profile, wherein a plurality of guide grooves (101) and installation clamping grooves (102) are provided on the side wall of the working platform (1), and a plurality of auxiliary rollers (103) for reducing the difficulty of moving workpieces are further provided at the top of the working platform (1). A plurality of positioning components (2) that can slide towards the center of the working platform (1) are detachably arranged above the working platform (1). A guide slider (203) that slides inside the guide groove (101) is provided at the bottom end of the positioning component (2). An adjusting pull rod (4) for fixing the positioning component (2) is provided on the upper surface of the working platform (1) where the positioning component (2) is located. A locking block (3) that can slide longitudinally is provided inside the positioning component (2) for locking the positioning component (2).

2. The auxiliary positioning device for large workpieces according to claim 1, wherein: The installation clamping groove (102) is used for the locking block (3) to slide. A plurality of tooth-shaped grooves (104) are provided at the top of the installation clamping groove (102). A plurality of tooth blocks (301) that can be engaged with the tooth-shaped grooves (104) are provided at the top of the locking block (3). Inclined end faces (105) for increasing the locking friction are further provided on both side walls of the installation clamping groove (102). The inclination angle of the inclined end face (105) is adapted to the end faces on both sides of the locking block (3). When the upper surface of the locking block (3) is in contact with the top of the installation clamping groove (102), the inclined end face (105) is in contact with the side walls of the locking block (3).

3. The auxiliary positioning device for large workpieces according to claim 2, wherein: A connecting column (5) is connected to the top of the locking block (3). The top of the connecting column (5) penetrates through the positioning component (2). A positioning ring (6) is sleeved on the part of the connecting column (5) inside the positioning component (2). The positioning component (2) includes an upper clamping block (201) and a lower guide block (202). A limiting chute (204) for the connecting column (5) and the positioning ring (6) to slide longitudinally is provided inside the upper clamping block (201).

4. The auxiliary positioning device for large workpieces according to claim 3, wherein: The bottom end of the lower guide block (202) is provided with a guide slider (203). An annular chute (207) for the upper clamping block (201) to rotate is provided at the top of the lower guide block (202). A guide clamping block (205) that slides inside the annular chute (207) is provided at the bottom end of the upper clamping block (201).

5. The auxiliary positioning device for large workpieces according to claim 4, wherein: A through groove for the adjusting pull rod (4) to slide is provided at the center of the bottom of the upper clamping block (201). An upper end face (403) is provided at the top of the adjusting pull rod (4). Both ends of the upper end face (403) are provided with downwardly inclined end faces. The adjusting pull rod (4) can slide horizontally. During the sliding process of the adjusting pull rod (4), it can push the positioning ring (6) to slide up and down. A lower end face (601) is provided at the bottom end of the positioning ring (6).

6. The auxiliary positioning device for large workpieces according to claim 5, characterized in that: One side of the adjusting pull rod (4) facing the large workpiece is provided with an end face two (402), one side of the upper clamping block (201) facing the large workpiece is provided with an end face one (206), damping blocks (401) can be detachably installed on both the end face two (402) and the end face one (206). When the end face two (402) is pressed by the workpiece and is flush with the end face one (206), the top end of the upper end face (403) is in contact with the lower end face (601) of the positioning ring (6), driving the locking block (3) to be clamped with the installation slot (102).

7. The auxiliary positioning device for large workpieces according to claim 6, wherein: One side of the adjusting pull rod (4) facing the connecting column (5) is provided with a plurality of ejecting springs (405). One end of the ejecting spring (405) is provided with a spring connecting block (406), and a pull block (404) is arranged on the side of the adjusting pull rod (4) away from the large workpiece.

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