Clamping tool special for multi-axis machining

Abstract

The utility model relates to a special clamping tool for multi-shaft machining, which comprises a tool mounting frame, a plurality of fixed clamping blocks and sliding clamping block assemblies for clamping workpieces are mounted on the tool mounting frame, and a containing groove for containing the workpieces is formed between each fixed clamping block and the corresponding sliding clamping block assembly which are adjacent to each other; the fixed clamping block comprises a horizontal mounting surface, a partition plate is arranged in the middle of the mounting surface, and a containing groove is formed in each of the two sides of the partition plate; the sliding clamping block assembly comprises two oppositely-arranged sliding blocks, a telescopic block is installed between the two sliding blocks, and the telescopic block is driven by a driving rod and a driving device to do telescopic motion. The fixed clamping block and the sliding clamping block assembly are combined to form a plurality of containing grooves, multiple shafts can be machined at the same time according to the working amount, and the working efficiency is improved. The telescopic block is driven by a hydraulic element or a pneumatic element to push the sliding block outwards, automatic clamping of the workpiece is achieved, manual operation is not needed, and the workpiece installing and positioning efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a special clamping tooling for multi-axis machining. Background Art

[0002] Shaft parts are widely used in mechanical equipment, and their functions are crucial for the operation of mechanical equipment. Shaft parts generally have the following functions: one is the connection function, used to connect two components; the other is the transmission function, used to transmit torque. Since some shaft parts rotate with the power equipment during operation, shaft equipment is prone to wear during use; there are also some shaft parts that will operate under load in some working scenarios and will bear huge external forces, and after a long operation time, the shaft will be deformed or broken. Especially for shaft parts used in some precision equipment, the material, processing technology and precision of the shaft will all affect the performance and service life of the shaft.

[0003] In order to ensure the processing technology and production precision of shaft parts, various tools and toolings are needed during the production and manufacturing process. When machining shafts, such as drilling and milling slots, and when machining a single workpiece, the workpiece needs to be frequently picked up and placed, and the equipment also needs to be frequently started and calibrated, resulting in low production efficiency. If multiple shafts are machined simultaneously, the work efficiency will be greatly improved. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a special clamping tooling for multi-axis machining that is convenient for simultaneously machining multiple shafts to improve production efficiency.

[0005] To solve the above technical problem, the technical solution of the utility model is: a special clamping tooling for multi-axis machining, including a tooling mounting frame installed above the workbench of the machining equipment. A plurality of fixed clamping blocks and sliding clamping block assemblies for clamping workpieces are installed on the tooling mounting frame. The fixed clamping blocks and the sliding clamping block assemblies are arranged at intervals, and an accommodating groove for the workpiece is formed between adjacent fixed clamping blocks and sliding clamping block assemblies;

[0006] The fixed clamping block includes a horizontal mounting surface. A partition is provided in the middle of the mounting surface. An accommodating groove is formed on each side of the partition. Two parallel side surfaces of the partition respectively form a side wall of the accommodating groove on both sides, and the mounting surface forms the bottom wall of the accommodating groove;

[0007] The sliding clamping block assembly includes two relatively arranged sliders. A telescopic block is installed between the two sliders. Inclined surfaces combined with the sliders are provided on both sides of the telescopic block. The inclined surfaces gradually expand outward from top to bottom, and sliding surfaces adapted to the inclined surfaces of the telescopic block are provided on the sliders;

[0008] The telescopic block is installed at the top of the driving rod. The driving rod moves telescopically under the drive of a driving device. When the driving rod jacks upward, it drives the slider to move inward and approach, increasing the distance between the slider and the opposite fixed clamping block to facilitate the insertion of a workpiece. When the driving rod contracts downward, it drives the slider to expand outward, reducing the gap between the slider and the opposite fixed clamping block to facilitate clamping the workpiece in the accommodating groove.

[0009] As a preferred technical solution, there is a spacing between the tooling mounting frame and the workbench, and the driving device is installed between the tooling mounting frame and the workbench.

[0010] As a further improvement, the top of the partition is provided with retaining walls extending to both sides.

[0011] As a preferred technical solution, first limiting grooves are provided on both sides of the sliding surface, and second limiting grooves matching the first limiting grooves are provided on the inclined surface of the telescopic block.

[0012] As a further improvement, the shape of the first limiting groove is "L", and the first limiting groove is composed of a first inner side wall, a first outer retaining wall, and a first outer side wall. The second limiting groove is a groove formed by inward concavity on both sides of the telescopic block. The second limiting groove includes a second outer side wall. The first inner side wall is coplanar with the sliding surface of the slider. The first outer side wall is slidably installed in the second limiting groove, and the second outer side wall is slidably installed in the first limiting groove.

[0013] As a further improvement, two sets of clamping toolings composed of fixed clamping blocks and sliding clamping block assemblies are provided on the tooling mounting frame.

[0014] As a further improvement, the fixed clamping block includes end fixed clamping blocks at both ends of a set of clamping toolings. The inner half of the end fixed clamping block forms an accommodating groove with the adjacent sliding clamping block assembly, and the outer half is a regular cube structure.

[0015] Due to the adoption of the above technical solution, the beneficial effects of the present utility model are as follows: Multiple accommodating grooves can be formed by combining the fixed clamping block and the sliding clamping block assembly in the present utility model, enabling multi-axis simultaneous processing according to the workload, thereby improving work efficiency.

[0016] Since the accommodating groove is formed by combining the fixed clamping block and the sliding clamping block assembly, it is convenient for the taking and placing of workpieces. The telescopic block of the sliding clamping block is driven by a hydraulic component or a pneumatic component to push the sliding block outward, realizing automatic clamping of the workpiece without manual operation, thus improving the efficiency of workpiece installation and positioning. Description of the Drawings

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0019] Figure 2 is Figure 1 the top view of

[0020] Figure 3 is a schematic diagram of the embodiment of the present invention in a clamped state;

[0021] Figure 4 is a schematic structural diagram of the fixed clamping block and the sliding clamping block assembly in the embodiment of the present invention;

[0022] In the figure: 100 - workbench; 200 - tooling mounting frame; 300 - fixed clamping block; 301 - mounting surface; 302 - partition; 303 - side; 304 - retaining wall; 310 - end fixed clamping block; 400 - sliding clamping block assembly; 410 - slider; 411 - sliding surface; 420 - telescopic block; 421 - inclined surface; 422 - driving rod; 423 - hydraulic cylinder; 430 - first limiting groove; 431 - first inner wall; 432 - first outer retaining wall; 433 - first outer wall; 440 - second limiting groove; 441 - second outer wall; 500 - receiving groove; workpiece - 600. Detailed implementation manners

[0023] As Figures 1 to 4 collectively shown, a special clamping tooling for multi-axis machining includes a tooling mounting frame 200 installed above the workbench 100 of the machining equipment. A plurality of fixed clamping blocks 300 and sliding clamping block assemblies 400 for clamping workpieces are installed on the tooling mounting frame 200. The workpiece refers to a shaft-like component to be machined. The fixed clamping blocks 300 and the sliding clamping block assemblies 400 are arranged at intervals, and a receiving groove 500 for accommodating the workpiece is formed between adjacent fixed clamping blocks and sliding clamping block assemblies. One workpiece can be placed in each receiving groove 500. In this embodiment, the clamping tooling composed of the fixed clamping blocks 300 and the sliding clamping block assemblies 400 can place a plurality of shafts to be machined, and the number of shafts machined simultaneously can be adjusted by increasing or decreasing the number of fixed blocks 300 and sliding clamping block assemblies 400.

[0024] The fixed clamping block 300 includes a horizontal mounting surface 301. In the middle of the mounting surface 301, there is a partition 302. On both sides of the partition 302, a receiving groove 500 is formed respectively. Two parallel side surfaces 303 of the partition 302 respectively form a side wall of the two receiving grooves 500 on both sides, and the mounting surface 301 forms the bottom wall of the receiving groove 500. At the top of the partition 302, there is a retaining wall 304 extending towards both sides. The retaining wall 304 is just located obliquely above the receiving groove 500 to limit the top of the workpiece.

[0025] The sliding clamping block assembly 400 includes two relatively arranged sliders 410. Between the two sliders 410, a telescopic block 420 is installed. On both sides of the telescopic block 420, there are smooth inclined surfaces 421 combined with the sliders 410. The inclined surfaces 421 gradually expand outwards from top to bottom. On the sliders 410, there are sliding surfaces 411 adapted to the inclined surfaces 421 of the telescopic block 420.

[0026] The telescopic block 420 is installed at the top end of the driving rod 422. The driving rod 422 performs telescopic movement driven by a driving device. When the driving rod 422 is pushed upwards, it drives the sliders 410 to move closer inward, reducing the distance between them and the opposite fixed clamping block 300. At this time, the width of the receiving groove 500 increases to facilitate the insertion of the workpiece. When the driving rod 422 contracts downwards, it drives the sliders 410 to expand outwards, reducing the gap between them and the opposite fixed clamping block 300, and the width of the receiving groove 500 decreases until the workpiece is clamped in the receiving groove 500.

[0027] There is a gap between the tooling mounting frame 200 and the workbench 100. The driving device is installed between the tooling mounting frame 200 and the workbench 100. Preferably, the driving device can be a hydraulic cylinder or a pneumatic cylinder. In this embodiment, the driving device uses a hydraulic cylinder 423.

[0028] To ensure the synchronization between the sliders 410 and the telescopic block 420, first limiting grooves 430 are provided on both sides of the sliding surfaces 411, and second limiting grooves 440 adapted to the first limiting grooves 430 are provided on the inclined surfaces 421 of the telescopic block 420.

[0029] The shape of the first limiting groove 430 is "L" - shaped. The first limiting groove 430 is composed of a first inner side wall 431, a first outer retaining wall 432, and a first outer side wall 433. The second limiting groove 440 is a groove body formed by inward concavity on both sides of the telescopic block 420. The second limiting groove includes a second outer side wall 441. The first inner side wall 431 is coplanar with the sliding surface 411 of the slider 410. The first outer side wall 433 is slidably installed in the second limiting groove 440, and the second outer side wall 441 is slidably installed in the first limiting groove 430.

[0030] In this embodiment, there are two sets of clamping tools composed of fixed clamping blocks 300 and sliding clamping block assemblies 400 on the tooling installation rack 200. In the actual production process, considering the length of the shaft, a set of clamping tools can also be used to fix the short shaft.

[0031] End fixing clamping blocks 310 are installed at both ends of the clamping tool. The inner half of the end fixing clamping block 310 forms a receiving groove 500 with the adjacent sliding clamping block assembly 400, and the outer half is a regular cube structure.

[0032] When the present utility model is in use, first install the fixed clamping block 300 and the sliding clamping block assembly 400 on the tooling installation rack 200, measure the distance between the fixed clamping block 300 and the sliding clamping block assembly 400, determine the maximum distance when the expansion block 420 is pushed out and the minimum distance when the expansion block 40 contracts. The diameter range of the machinable shaft is greater than the minimum distance and less than the maximum distance.

[0033] Fix the tooling installation rack 200 above the workbench, and install the hydraulic cylinder on the workbench. Preferably, the distance between the tooling installation rack 200 and the workbench 100 is approximately equal to the height of the hydraulic cylinder, and fix the expansion block 420 to the driving rod 422 of the hydraulic cylinder.

[0034] Control the driving rod 422 of the hydraulic cylinder to push the expansion block 420 upward, the receiving groove 500 becomes larger, put the workpiece 600 in, then control the driving rod 422 to contract, the expansion block 420 pushes the slider 410 downward to both sides, the distance between the slider 410 and the workpiece 600 shrinks until the workpiece 600 in the receiving groove 500 is clamped. After the workpiece 600 is clamped and fixed, start the processing equipment to process the workpiece.

[0035] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A special clamping tool for multi-axis machining, characterized in that: It includes a tooling mounting bracket installed above the workbench of the processing equipment. A plurality of fixed clamping blocks and sliding clamping block assemblies for clamping workpieces are installed on the tooling mounting bracket. The fixed clamping blocks and the sliding clamping block assemblies are arranged at intervals, and a receiving groove for the workpiece is formed between adjacent fixed clamping blocks and sliding clamping block assemblies. The fixed clamping block includes a horizontal mounting surface. A partition is provided in the middle of the mounting surface. A receiving groove is formed on each side of the partition. Two parallel side surfaces of the partition respectively form a side wall of the receiving grooves on both sides, and the mounting surface forms the bottom wall of the receiving groove. The sliding clamping block assembly includes two relatively arranged sliders. A telescopic block is installed between the two sliders. Inclined surfaces combined with the sliders are provided on both sides of the telescopic block. The inclined surfaces gradually expand outwards from top to bottom, and sliding surfaces adapted to the inclined surfaces of the telescopic block are provided on the sliders. The telescopic block is installed at the top of the driving rod. The driving rod performs telescopic movement driven by a driving device. When the driving rod jacks upwards, it drives the sliders to move inwards and approach each other, increasing the distance between them and the opposite fixed clamping blocks to facilitate the insertion of the workpiece. When the driving rod contracts downwards, it drives the sliders to expand outwards, reducing the gap between them and the opposite fixed clamping blocks to clamp the workpiece in the receiving groove.

2. A multi-axis machining special clamping tool as claimed in claim 1, characterized in that: There is a spacing between the tooling mounting bracket and the workbench, and the driving device is installed between the tooling mounting bracket and the workbench.

3. A multi-axis machining special clamping tool as claimed in claim 1 or 2, characterized in that: A retaining wall extending towards both sides is provided at the top of the partition.

4. A multi-axis machining special clamping tool as claimed in claim 1 or 2, characterized in that: First limiting grooves are provided on both side edges of the sliding surface, and second limiting grooves matching the first limiting grooves are provided on the inclined surfaces of the telescopic block.

5. A multi-axis machining special clamping tool as claimed in claim 4, characterized in that: The shape of the first limiting groove is "L". The first limiting groove is composed of a first inner side wall, a first outer retaining wall and a first outer side wall. The second limiting groove is a groove formed by concave inward on both sides of the telescopic block. The second limiting groove includes a second outer side wall. The first inner side wall is coplanar with the sliding surface of the slider. The first outer side wall is slidably installed in the second limiting groove, and the second outer side wall is slidably installed in the first limiting groove.

6. A multi-axis machining special clamping tool as claimed in claim 1, characterized in that: Two sets of clamping toolings composed of fixed clamping blocks and sliding clamping block assemblies are provided on the tooling mounting bracket.

7. A multi-axis machining special clamping tool as claimed in claim 6, characterized in that: The fixed clamping block includes end fixed clamping blocks located at both ends of a set of clamping toolings. The inner half of the end fixed clamping block forms a receiving groove with the adjacent sliding clamping block assembly, and the outer half is a regular cube structure.

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