Special-shaped workpiece machining, positioning and clamping device

Abstract

The utility model discloses a special-shaped workpiece machining, positioning and clamping device, which belongs to the technical field of workpiece machining and comprises a base, and a positioning, supporting and clamping device for positioning, supporting and primary clamping and a bearing and clamping device for bearing and secondary clamping are mounted on the base. The bearing clamping device comprises a driving bearing assembly and a clamping assembly, the driving bearing assembly is connected with the base, and the clamping assembly is located at the upper end of the driving bearing assembly and connected with the driving bearing assembly and the base. By means of the mode, through the arrangement of the driving bearing assembly and the clamping assembly, the middle of the special-shaped part is borne, meanwhile, the special-shaped part can be clamped and fixed, and the stability in the machining process is ensured; the special-shaped part is positioned through the positioning base, it is ensured that the position of the special-shaped part is accurate, the inclined pulling block is driven by the pressing block to move, clamping and fixing are conducted through the self weight of the special-shaped part, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece processing, and particularly relates to a positioning and clamping device for machining special-shaped workpieces. Background Technique

[0002] In industrial production, there are many parts with irregular or special shapes that need secondary processing. For the convenience of processing, it is generally necessary to position, clamp and fix special-shaped parts. According to different special-shaped parts, special fixtures, welding and other methods will be selected for fixation.

[0003] For example, Chinese Patent Application CN216000191U discloses a quick positioning and calibration fixture for polyhedron special-shaped parts, including a bottom plate; a limit support body is fixed on the bottom plate, and a side pressing plate that forms an L shape and is detachable from the limit support body is arranged on the limit support body, and a third adjusting bolt and a first adjusting bolt for positioning the workpiece are respectively screwed on the side pressing plate and the limit support body; a support positioning block is detachably installed on the bottom plate, and the support positioning block is located diagonally opposite to the limit support body, and an L-shaped boss for positioning the workpiece in cooperation with the third adjusting bolt and the first adjusting bolt is arranged on the upper surface of the support positioning block; a leveling mechanism is detachably installed on the bottom plate and is used to support and level the workpiece; a pressing mechanism is detachably installed on the bottom plate and is used to press the workpiece to prevent the workpiece from moving.

[0004] However, when using this quick positioning and calibration fixture for polyhedron special-shaped parts, a large number of clamping components are required for fixation after positioning with a positioning pin, the operation is cumbersome, and it is not suitable for special-shaped parts without enough space on the bottom surface for support.

[0005] Based on this, the utility model designs a positioning and clamping device for machining special-shaped workpieces to solve the above problems. Content of the Utility Model

[0006] In view of the above-mentioned shortcomings of the prior art, the utility model provides a positioning and clamping device for machining special-shaped workpieces.

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

[0008] A positioning and clamping device for machining special-shaped workpieces includes a base,

[0009] A positioning, supporting and first clamping device and a load-bearing and second clamping device for positioning, supporting and first clamping are installed on the base;

[0010] The load-bearing and clamping device includes a driving and load-bearing component for providing power and sharing the weight of the special-shaped part and a second clamping component for clamping and fixing the special-shaped part. The driving and load-bearing component is connected to the base, and the second clamping component is located at the upper end of the driving and load-bearing component and is connected to the driving and load-bearing component and the base.

[0011] Further, the base includes a bracket and a tabletop. The tabletop is fixedly installed at the upper end of the bracket. The upper end of the tabletop is connected to the positioning support clamping device, the driving and load-bearing component, and the second clamping component, and the bottom end of the tabletop is connected to the driving and load-bearing component.

[0012] Further, the positioning support clamping device includes two positioning components and two first clamping components. The positioning components and the first clamping components are installed at the upper end of the tabletop. The positioning components are located on the right side of the driving and load-bearing component, and the first clamping components are located on the left side of the driving and load-bearing component.

[0013] Further, the two positioning components are respectively installed at the front and rear sides of the right end of the tabletop. The positioning component includes a first support seat and a positioning seat. The first support seat is fixedly installed at the upper end of the tabletop, the positioning seat is fixedly installed at the upper end of the first support seat, and an L-shaped convex block for cooperating with the right end of the special-shaped part to be fixed is arranged at the upper end of the positioning seat.

[0014] Further, the two first clamping components are respectively installed at the front and rear sides of the left end of the tabletop. The first clamping component includes a second support seat, a sliding table, two clamping parts, a pressing block, an adaptive load-bearing block, and a first spring. The second support seat is fixedly installed at the upper end of the tabletop, the sliding table is fixedly installed at the upper end of the second support seat. A chute for cooperating with the clamping part is arranged at the upper end of the sliding table. The lower end of the first spring is fixedly connected to the upper end of the sliding table, the upper end of the first spring is fixedly connected to the pressing block, an adaptive load-bearing block is fixedly installed at the upper end of the pressing block, and the upper end of the adaptive load-bearing block is inclined to cooperate with the left end of the special-shaped part. The two clamping parts are symmetrically arranged on the front and rear sides of the first spring, and the clamping parts are connected to the sliding table and the pressing block.

[0015] Further, the clamping part includes a slider, an inclined pulling block, and a clamping block. The lower end of the slider is in limiting sliding connection with the sliding table, the upper end of the slider is fixedly connected to the inclined pulling block, the inclined pulling block is in sliding connection with the pressing block, the upper end of the inclined pulling block is fixedly connected to the clamping block, and the inclined pulling block gradually approaches and inclines towards the first spring from bottom to top.

[0016] Further, the driving and load-bearing component includes a cylinder, a sliding seat, a push plate, two limiting frames, two sliding rods, two second springs, and two nuts. The cylinder is fixedly installed at the lower end of the tabletop, and the output end of the cylinder passes through the tabletop and is fixedly connected to the sliding seat. The two limiting frames are respectively fixedly installed at the front and rear sides of the upper end of the tabletop. The limiting frames are arranged as U-shaped frames. The front and rear ends of the sliding seat are respectively in limiting sliding connection with the inner sides of the two limiting frames. The lower ends of the two sliding rods are provided with threads, the lower ends of the sliding rods pass through the sliding seat and are in threaded connection with the nuts, the upper ends of the sliding rods are fixedly connected to the push plate, the two second springs are respectively sleeved on the two sliding rods, and the two ends of the second springs are respectively fixedly connected to the push plate and the sliding seat. Two through holes for cooperating with the second clamping component are arranged on the sliding seat, and the upper end of the sliding seat is connected to the second clamping component.

[0017] Further, there are two second clamping components, which are symmetrically arranged at the front and rear ends of the sliding seat. The second clamping component includes a clamping frame, a connecting rod and a pressing block. One end of the clamping frame is rotatably connected to the sliding seat, the inner side of the other end of the clamping frame is fixedly connected to the pressing block, the inner side of the middle part of the clamping frame is rotatably connected to one end of the connecting rod, the other end of the connecting rod passes through the through hole of the sliding seat and is rotatably connected to the table top, and the clamping frame is a Z-shaped frame.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows: 1. By the arrangement of the driving load-bearing component and the clamping component, the middle part of the special-shaped part can be loaded while the special-shaped part can be clamped and fixed, ensuring the stability during the processing;

[0019] 2. By the arrangement of the positioning seat, the special-shaped part is positioned to ensure the accurate position of the special-shaped part. The lower pressing block drives the inclined pulling block to move, and the special-shaped part is clamped and fixed by using its own weight, which is convenient and fast to operate;

[0020] 3. The cylinder drives the sliding seat to move, so that the special-shaped part is simultaneously subjected to the upward force of the push plate and the downward force of the pressing block 323, ensuring the stability of the special-shaped part while loading the middle part of the special-shaped part, which is convenient for the subsequent processing. Description of the Drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0022] Figure 1 Is a three-dimensional view of a positioning and clamping device for machining special-shaped workpieces of the present utility model Figure 1 ;

[0023] Figure 2 Is a front view of a positioning and clamping device for machining special-shaped workpieces of the present utility model;

[0024] Figure 3 Is a left view of a positioning and clamping device for machining special-shaped workpieces of the present utility model;

[0025] Figure 4 Is a three-dimensional view of a positioning and clamping device for machining special-shaped workpieces of the present utility model Figure 2 ;

[0026] Figure 5 Is a sectional view taken along the A-A direction of Figure 2 ;

[0027] Figure 6 IsFigure 4 Enlarged view at position B in the figure.

[0028] The reference numerals in the figure respectively represent:

[0029] 1. Base; 11. Bracket; 12. Tabletop; 2. Positioning support clamping device; 21. Positioning component; 211. First support seat; 212. Positioning seat; 22. First clamping component; 221. Second support seat; 222. Slide; 223. Slide block; 224. Diagonal tension block; 225. Clamping block; 226. Pressing block; 227. Adapted load-bearing block; 228. First spring; 3. Load-bearing clamping device; 31. Driving load-bearing component; 311. Cylinder; 312. Sliding seat; 313. Pushing plate; 314. Limiting frame; 315. Slide bar; 316. Second spring; 317. Nut; 32. Second clamping component; 321. Clamping frame; 322. Connecting rod; 323. Pressing block. Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0031] The "left", "right", "front", "rear", "upper", and "lower" mentioned in the following description are oriented in the perspective direction of the front view.

[0032] Embodiment 1: In some embodiments, please refer to the Figures 1 - 6 of the accompanying drawings of the specification, a machining positioning and clamping device for special-shaped workpieces includes a base 1,

[0033] A positioning support clamping device 2 for positioning, supporting, and first clamping and a load-bearing clamping device 3 for load-bearing and secondary clamping are installed on the base 1;

[0034] The load-bearing clamping device 3 includes a driving load-bearing component 31 for providing power and sharing the weight of the special-shaped part and a second clamping component 32 for clamping and fixing the special-shaped part. The driving load-bearing component 31 is connected to the base 1, and the second clamping component 32 is located at the upper end of the driving load-bearing component 31 and is connected to the driving load-bearing component 31 and the base 1.

[0035] When the machining positioning and clamping device for the special-shaped workpiece is in normal use, the special-shaped part is placed on the positioning, supporting and clamping device 2 for positioning, supporting and first clamping and fixing. Then, the driving and load-bearing component 31 is started, and the driving and load-bearing component 31 moves upward to bear the weight of the middle bottom of the special-shaped part. At the same time, the driving and load-bearing component 31 drives the second clamping component 32 to clamp the front and rear sides of the special-shaped part. Through the settings of the driving and load-bearing component 31 and the second clamping component 32, the middle part of the special-shaped part can be borne while the special-shaped part can be secondarily clamped and fixed, ensuring the stability during the machining process.

[0036] The base 1 includes a bracket 11 and a tabletop 12. The tabletop 12 is fixedly installed at the upper end of the bracket 11. The upper end of the tabletop 12 is connected to the positioning, supporting and clamping device 2, the driving and load-bearing component 31, and the second clamping component 32, and the bottom end of the tabletop 12 is connected to the driving and load-bearing component 31.

[0037] The positioning, supporting and clamping device 2 includes two positioning components 21 and two first clamping components 22. The positioning components 21 and the first clamping components 22 are installed at the upper end of the tabletop 12. The positioning components 21 are located on the right side of the driving and load-bearing component 31, and the first clamping components 22 are located on the left side of the driving and load-bearing component 31.

[0038] The two positioning components 21 are respectively installed at the front and rear sides of the right end of the tabletop 12. The positioning component 21 includes a first support seat 211 and a positioning seat 212. The first support seat 211 is fixedly installed at the upper end of the tabletop 12, and the positioning seat 212 is fixedly installed at the upper end of the first support seat 211. An L-shaped convex block for cooperating with the right end of the special-shaped part to be fixed is arranged at the upper end of the positioning seat 212.

[0039] The two first clamping components 22 are respectively installed at the front and rear sides of the left end of the tabletop 12. The first clamping component 22 includes a second support seat 221, a sliding table 222, two clamping parts, a pressing block 226, an adaptive load-bearing block 227 and a first spring 228. The second support seat 221 is fixedly installed at the upper end of the tabletop 12, the sliding table 222 is fixedly installed at the upper end of the second support seat 221. A chute for cooperating with the clamping part is opened at the upper end of the sliding table 222. The lower end of the first spring 228 is fixedly connected to the upper end of the sliding table 222, and the upper end of the first spring 228 is fixedly connected to the pressing block 226. An adaptive load-bearing block 227 is fixedly installed at the upper end of the pressing block 226, and the upper end of the adaptive load-bearing block 227 is arranged to be inclined to cooperate with the left end of the special-shaped part. The two clamping parts are symmetrically arranged on the front and rear sides of the first spring 228, and the clamping parts are connected to the sliding table 222 and the pressing block 226.

[0040] The clamping component includes a slider 223, an inclined pulling block 224, and a clamping block 225. The lower end of the slider 223 is in limit sliding connection with the slide table 222. The upper end of the slider 223 is fixedly connected to the inclined pulling block 224. The inclined pulling block 224 is in sliding connection with the pressing block 226. The upper end of the inclined pulling block 224 is fixedly connected to the clamping block 225. The inclined pulling block 224 gradually inclines and approaches the first spring 228 from bottom to top.

[0041] When the special-shaped workpiece machining positioning and clamping device is in normal use, first place the right end of the special-shaped part on the positioning seat 212 and lean it tightly against the convex block to the right. Then place the left side of the special-shaped part downward. The left end of the special-shaped part presses down the matching load-bearing block 227. The matching load-bearing block 227 drives the pressing block 226 to move downward. Under the action of the pressing block 226, the inclined pulling block 224 moves respectively in the direction close to the first spring 228. The inclined pulling block 224 drives the slider 223 to slide on the slide table 222. The inclined pulling block 224 drives the clamping block 225 to clamp and fix the left end of the special-shaped part. Through the setting of the positioning seat 212, the special-shaped part is positioned to ensure the accurate position of the special-shaped part. By driving the inclined pulling block 224 to move through the pressing block 226, the special-shaped part is clamped and fixed by using its own weight, and the operation is convenient and fast.

[0042] The driving load-bearing assembly 31 includes a cylinder 311, a sliding seat 312, a push plate 313, two limit frames 314, two sliding rods 315, two second springs 316, and two nuts 317. The cylinder 311 is fixedly installed at the lower end of the table top 12. The output end of the cylinder 311 passes through the table top 12 and is fixedly connected to the sliding seat 312. The two limit frames 314 are respectively fixedly installed on the front and rear sides of the upper end of the table top 12. The limit frame 314 is set as a U-shaped frame. The front and rear ends of the sliding seat 312 are respectively in limit sliding connection with the inner sides of the two limit frames 314. The lower ends of the two sliding rods 315 are provided with threads. The lower ends of the sliding rods 315 pass through the sliding seat 312 and are threadedly connected to the nuts 317. The upper ends of the sliding rods 315 are fixedly connected to the push plate 313. The two second springs 316 are respectively sleeved on the two sliding rods 315. The two ends of the second spring 316 are respectively fixedly connected to the push plate 313 and the sliding seat 312. Two through holes for cooperating with the second clamping assembly 32 are formed in the sliding seat 312. The upper end of the sliding seat 312 is connected to the second clamping assembly 32.

[0043] There are two second clamping assemblies 32. The two second clamping assemblies 32 are symmetrically arranged at the front and rear ends of the sliding seat 3,. The second clamping assembly 32 includes a clamping frame 321, a connecting rod 322, and a pressing block 323. One end of the clamping frame 321 is rotatably connected to the sliding seat 312. The inner side of the other end of the clamping frame 321 is fixedly connected to the pressing block 323. The middle part of the clamping frame 321 is rotatably connected to one end of the connecting rod 322. The other end of the connecting rod 322 passes through the through hole of the sliding seat 312 and is rotatably connected to the table top 12. The clamping frame 321 is a Z-shaped frame.

[0044] When the positioning and clamping device for machining special-shaped workpieces is used normally, the cylinder 311 is started, and the cylinder 311 drives the sliding seat 312 to move upward along the limit frame 314, and the sliding seat 312 drives the second spring 316 to move, and the second spring 316 drives the push plate 313 to move, and the push plate 313 contacts the middle bottom of the special-shaped workpiece and continues to move upward. The second spring 316 compresses and applies an upward force to the special-shaped workpiece, and the sliding seat 312 moves while driving the clamping frame 321 to move, and the clamping frame 321 drives the connecting rod 322 to rotate, and the clamping frame 313 The cam 323 is pressed against the top of the cam 324 and the cam 326 is pressed against the top of the cam 324. The cam 326 is pressed against the top of the cam 324 and the cam 326 is pressed against the bottom of the cam 324.

[0045] 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 they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these 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 various embodiments of the present invention.

Claims

1. An irregular workpiece machining positioning and clamping device, comprising a base (1), characterized in that: A positioning, supporting and first clamping device (2) for positioning, supporting and first clamping and a load-bearing and second clamping device (3) for load-bearing and second clamping are installed on the base (1). The load-bearing clamping device (3) includes a driving and load-bearing component (31) for providing power and sharing the weight of the special-shaped part and a second clamping component (32) for clamping and fixing the special-shaped part. The driving and load-bearing component (31) is connected to the base (1), and the second clamping component (32) is located at the upper end of the driving and load-bearing component (31) and is connected to the driving and load-bearing component (31) and the base (1).

2. The special-shaped workpiece machining positioning and clamping device according to claim 1, characterized in that The base (1) includes a bracket (11) and a tabletop (12). The tabletop (12) is fixedly installed at the upper end of the bracket (11). The upper end of the tabletop (12) is connected to the positioning, supporting and clamping device (2), the driving and load-bearing component (31), and the second clamping component (32), and the bottom end of the tabletop (12) is connected to the driving and load-bearing component (31).

3. The special-shaped workpiece machining positioning and clamping device according to claim 2, characterized in that, The positioning, supporting and clamping device (2) includes two positioning components (21) and two first clamping components (22). The positioning components (21) and the first clamping components (22) are installed at the upper end of the tabletop (12). The positioning components (21) are located on the right side of the driving and load-bearing component (31), and the first clamping components (22) are located on the left side of the driving and load-bearing component (31).

4. The special-shaped workpiece machining positioning and clamping device according to claim 3, characterized in that The two positioning components (21) are respectively installed on the front and rear sides of the right end of the tabletop (12). The positioning component (21) includes a first support seat (211) and a positioning seat (212). The first support seat (211) is fixedly installed at the upper end of the tabletop (12), the positioning seat (212) is fixedly installed at the upper end of the first support seat (211), and an L-shaped convex block for cooperating with the right end of the special-shaped part to be fixed is arranged at the upper end of the positioning seat (212).

5. The special-shaped workpiece machining positioning and clamping device according to claim 4, characterized in that, The two first clamping components (22) are respectively installed on the front and rear sides of the left end of the tabletop (12). The first clamping component (22) includes a second support seat (221), a sliding table (222), two clamping parts, a pressing block (226), an adaptive load-bearing block (227) and a first spring (228). The second support seat (221) is fixedly installed at the upper end of the tabletop (12), the sliding table (222) is fixedly installed at the upper end of the second support seat (221), a chute for cooperating with the clamping part is arranged at the upper end of the sliding table (222), the lower end of the first spring (228) is fixedly connected to the upper end of the sliding table (222), the upper end of the first spring (228) is fixedly connected to the pressing block (226), an adaptive load-bearing block (227) is fixedly installed at the upper end of the pressing block (226), the upper end of the adaptive load-bearing block (227) is inclined to cooperate with the left end of the special-shaped part, and the two clamping parts are symmetrically arranged on the front and rear sides of the first spring (228), and the clamping parts are connected to the sliding table (222) and the pressing block (226).

6. The special-shaped workpiece machining positioning and clamping device according to claim 5, characterized in that, The clamping component includes a slider (223), an inclined pulling block (224), and a clamping block (225). The lower end of the slider (223) is in limited sliding connection with the sliding table (222). The upper end of the slider (223) is fixedly connected to the inclined pulling block (224). The inclined pulling block (224) is in sliding connection with the downward pressing block (226). The upper end of the inclined pulling block (224) is fixedly connected to the clamping block (225). The inclined pulling block (224) gradually inclines and approaches the first spring (228) from bottom to top.

7. The special-shaped workpiece machining positioning and clamping device according to claim 6, characterized in that, The driving and load-bearing assembly (31) includes a cylinder (311), a sliding seat (312), a push plate (313), two limiting frames (314), two sliding rods (315), two second springs (316), and two nuts (317). The cylinder (311) is fixedly installed at the lower end of the tabletop (12). The output end of the cylinder (311) passes through the tabletop (12) and is fixedly connected to the sliding seat (312). The two limiting frames (314) are respectively fixedly installed on the front and rear sides of the upper end of the tabletop (12). The limiting frame (314) is arranged as a U-shaped frame. The front and rear ends of the sliding seat (312) are respectively in limited sliding connection with the inner sides of the two limiting frames (314). The lower ends of the two sliding rods (315) are provided with threads. The lower ends of the sliding rods (315) pass through the sliding seat (312) and are threadedly connected to the nuts (317). The upper ends of the sliding rods (315) are fixedly connected to the push plate (313). The two second springs (316) are respectively sleeved on the two sliding rods (315). The two ends of the second spring (316) are respectively fixedly connected to the push plate (313) and the sliding seat (312). Two through holes for cooperating with the second clamping assembly (32) are formed in the sliding seat (312). The upper end of the sliding seat (312) is connected to the second clamping assembly (32).

8. The special-shaped workpiece machining positioning and clamping device according to claim 7, characterized in that, There are two second clamping assemblies (32). The two second clamping assemblies (32) are symmetrically arranged at the front and rear ends of the sliding seat (312). The second clamping assembly (32) includes a clamping frame (321), a connecting rod (322), and a pressing block (323). One end of the clamping frame (321) is rotatably connected to the sliding seat (312). The inner side of the other end of the clamping frame (321) is fixedly connected to the pressing block (323). The inner side of the middle part of the clamping frame (321) is rotatably connected to one end of the connecting rod (322). The other end of the connecting rod (322) passes through the through hole of the sliding seat (312) and is rotatably connected to the tabletop (12). The clamping frame (321) is a Z-shaped frame.

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