Workpiece clamping tool for CNC machine tool

Abstract

The utility model discloses a workpiece clamping frock for CNC numerical control machine tool relates to CNC numerical control machine tool technical field, including the bottom plate, the bottom plate top is equipped with the clamping protection subassembly, clamping protection subassembly one side is equipped with cleaning assembly, clamping protection subassembly includes the servo motor of installation in the bottom plate one side. The utility model discloses the cooperation of telescopic board and protection board can prevent the workpiece when processing and the splinter of spatter adhesion to the two -way thread screw rod, lead to the two -way thread screw rod appears the situation of jam or damage, influence clamping frock's normal use, through brush board and multistage telescopic brush can be with the splinter of protection board and telescopic board clean and clean to the collection box inside, through setting the scraper will the splinter of brush board and multistage telescopic brush adhesion scrape off, drop into the collection box of right below, realize the automatic cleaning and collection of splinter, need not the manual cleaning of staff, has saved the time and the energy greatly, has improved the overall work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of CNC machine tool technology, specifically to a workpiece clamping fixture for CNC machine tools. Background Technology

[0002] CNC machine tools are important processing equipment that integrate multiple functions such as cutting, milling, drilling, etc. They are highly automated and can be connected to a central computer to accurately implement the instructions of the central computer. For CNC machine tools, clamping fixtures are an indispensable auxiliary tool in the machining process. Clamping fixtures mainly play the role of fixing and positioning the workpiece during the workpiece machining process.

[0003] A search of Chinese patent (publication number: CN223000131U) reveals a workpiece clamping fixture for CNC machine tools. It uses a first motor to drive a lead screw to rotate, and as the lead screw rotates, it drives a second clamping seat to move along a first slide groove, changing the distance between the first clamping seat and the first slide groove, thus meeting the clamping requirements of workpieces of different lengths.

[0004] However, the above technical solution still has certain defects. After the device clamps and fixes the workpiece, it needs to process the workpiece. However, during the processing, a large amount of debris will inevitably be generated and fall onto the surface of the threaded rod. Over time, it will gradually accumulate into layers, causing the threaded sleeve on the threaded rod to obstruct rotation. At the same time, the workers often need to spend a lot of time and effort to completely remove these stubborn debris in the subsequent cleaning work. This process is not only tedious and complicated, but also greatly affects the overall work efficiency. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a workpiece clamping fixture for CNC machine tools that can prevent debris from adhering to the lead screw and clean up the debris, thereby improving overall work efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a workpiece clamping fixture for a CNC machine tool, comprising a base plate, a clamping protection component on the top of the base plate, and a cleaning component on one side of the clamping protection component;

[0007] The clamping and protective assembly includes a servo motor mounted on one side of the base plate. A bidirectional threaded screw is fixed to the output end of the servo motor. Movable blocks are rotatably connected to both sides of the outer wall of the bidirectional threaded screw. Fixed shafts are provided on opposite sides of the two sets of movable blocks. A clamping plate for clamping and fixing the workpiece is provided on one side of the fixed shaft. A protective plate fixed to the base plate is provided directly above the bidirectional threaded screw. Telescopic plates are slidably connected to both sides of the protective plate. The ends of the two sets of telescopic plates are fixed to the two sets of movable blocks.

[0008] The cleaning assembly includes a hydraulic tank fixed to one side of the top of the base plate. A multi-stage telescopic tube is connected to one side of the hydraulic tank. A brush plate is fixed to the end of the multi-stage telescopic tube. Multi-stage telescopic brushes are slidably connected to both sides of the brush plate. Limiting strips are fixed to both the front and rear ends of the multi-stage telescopic brushes. Limiting grooves for the movement of the limiting strips are provided on both sides of the inner wall of the multi-stage telescopic brushes and the brush plate. A scraper fixed to the base plate is provided on one side of the bottom of the multi-stage telescopic brushes and the brush plate.

[0009] As a preferred technical solution, both ends of the two sets of moving blocks are fixed with sliding strips, and the bottom plate is provided with a sliding groove for the sliding strips to move.

[0010] As a preferred technical solution, a first synchronous pulley is fixed on one side of the outer wall of the bidirectional threaded screw, and a meshing synchronous belt is provided on the outer wall of the first synchronous pulley. A second synchronous pulley is provided on the inner wall of the synchronous belt away from the first synchronous pulley. A threaded rod is horizontally fixed at the center of the second synchronous pulley, and a pressing rod is rotatably connected to the outer wall of the threaded rod. The pressing rod is slidably connected to the hydraulic box.

[0011] As a preferred technical solution, the top of the base plate is provided with a clearance groove for the extrusion rod to move, and a baffle fixed to the base plate is provided on one side of the clearance groove.

[0012] As a preferred technical solution, both the brush plate and the telescopic connection end of the multi-stage telescopic brush are provided with a slot for the cleaning brush to move in.

[0013] As a preferred technical solution, a collection box that is slidably connected to the base plate is provided directly below the brush plate, and guide strips are slidably connected to both ends of the two sets of multi-stage telescopic brushes, with the guide strips fixed to the moving block.

[0014] In summary, the present invention has the following main advantages:

[0015] This invention, through the cooperation of a telescopic plate and a protective plate, effectively prevents workpiece debris from splashing and adhering to the bidirectional threaded screw during processing, thus preventing jamming or damage to the screw and affecting the normal use and accuracy of the clamping fixture. After workpiece processing, the brush plate and multi-stage telescopic brush clean the debris from the protective plate and telescopic plate until it is swept into the collection box. The continuous movement of the brush plate and multi-stage telescopic brush contacts the scraper on the base plate, which then scrapes off the debris adhering to the brush plate and multi-stage telescopic brush, causing it to fall into the collection box directly below. This achieves automatic cleaning and collection of debris, eliminating the need for manual cleaning and greatly saving time and effort, thus improving overall work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall components of this utility model;

[0017] Figure 2 This is a schematic diagram of the clamping and protective assembly of this utility model;

[0018] Figure 3 This is a partial sectional view of the base plate of this utility model;

[0019] Figure 4 This is a schematic diagram of the cleaning component of this utility model;

[0020] Figure 5 This is a schematic diagram showing the connection between the brush plate and the multi-stage telescopic brush of this utility model.

[0021] In the diagram: 100, base plate;

[0022] 200. Clamping and protective assembly; 210. Servo motor; 220. Bidirectional threaded screw; 230. Moving block; 231. Sliding bar; 232. Slide groove; 240. Fixed shaft; 250. Clamping plate; 260. Protective plate; 270. Telescopic plate;

[0023] 300. Cleaning component; 310. First synchronous pulley; 320. Synchronous belt; 330. Second synchronous pulley; 340. Threaded rod; 350. Extrusion rod; 351. Baffle; 352. Clearance groove; 360. Hydraulic tank; 370. Multi-stage telescopic tube; 380. Scraper; 390. Brush plate; 391. Multi-stage telescopic brush; 392. Limiting strip; 393. Limiting groove; 394. Clearance groove; 3910. Guide strip; 3920. Collection box. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0025] The embodiments of this utility model will be described below based on its overall structure.

[0026] A workpiece clamping fixture for CNC machine tools, such as Figure 1-5 As shown, it includes a base plate 100, a clamping and protective assembly 200 on the top of the base plate 100, and a cleaning assembly 300 on one side of the clamping and protective assembly 200;

[0027] The clamping and protective assembly 200 includes a servo motor 210 installed on one side of the base plate 100. A bidirectional threaded screw 220 is fixed to the output end of the servo motor 210. Movable blocks 230 are rotatably connected to both sides of the outer wall of the bidirectional threaded screw 220. Fixed shafts 240 are provided on opposite sides of the two sets of movable blocks 230. A clamping plate 250 for clamping and fixing the workpiece is provided on one side of the fixed shaft 240. A protective plate 260 is fixed to the base plate 100 directly above the bidirectional threaded screw 220. Telescopic plates 270 are slidably connected to both sides of the protective plate 260. The ends of the two sets of telescopic plates 270 are fixed to the two sets of movable blocks 230.

[0028] The cleaning assembly 300 includes a hydraulic tank 360 fixed to one side of the top of the base plate 100. A multi-stage telescopic tube 370 is connected to one side of the hydraulic tank 360. A brush plate 390 is fixed to the end of the multi-stage telescopic tube 370. Multi-stage telescopic brushes 391 are slidably connected to both sides of the brush plate 390. Limiting strips 392 are fixed to both the front and rear ends of the multi-stage telescopic brushes 391. Limiting grooves 393 for the movement of the limiting strips 392 are provided on both sides of the inner wall of the multi-stage telescopic brushes 391 and the brush plate 390. A scraper 380 is fixed to the base plate 100 on one side of the bottom of the brush plate 390. A first synchronous pulley 310 is fixed to one side of the outer wall of the bidirectional threaded screw 220. A synchronous belt 320 is provided on the outer wall of the first synchronous pulley 310. A second synchronous pulley 330 is provided on the inner wall of the synchronous belt 320 away from the first synchronous pulley 310. A threaded rod 340 is fixed horizontally to the center of the second synchronous pulley 330. A pressing rod 350 is rotatably connected to the outer wall of the threaded rod 340. The pressing rod 350 is slidably connected to the hydraulic box 360.

[0029] By activating the servo motor 210, the bidirectional threaded screw 220 is rotated, which in turn drives the two sets of moving blocks 230 to move towards the center. Simultaneously, the moving blocks 230 move, causing the telescopic plate 270 to move synchronously. Through the cooperation of the telescopic plate 270 and the protective plate 260, it effectively prevents workpiece debris from splashing and adhering to the bidirectional threaded screw 220 during processing, thus preventing jamming or damage to the screw and affecting the normal use and accuracy of the clamping fixture. Simultaneously, the rotation of the bidirectional threaded screw 220 also drives the first synchronous pulley 310, the synchronous belt 320, and the second synchronous pulley 330 to rotate, thereby driving the threaded rod 340 to move. This drives the pressing rod 350 to move, causing it to push the hydraulic oil in the hydraulic tank 360 into the multi-stage telescopic tube 370. Under pressure, the multi-stage telescopic tube 370 extends and pushes into the brush plate 390. The servo motor 210 moves to one side, causing the brush plate 390 and the multi-stage telescopic brush 391 to move to the appropriate position. Once the brush plate 390 and the multi-stage telescopic brush 391 are in the appropriate position, the workpiece is processed. After processing is completed, the servo motor 210 reverses to move the moving blocks 230 on both sides to the sides. At the same time, the brush plate 390 and the multi-stage telescopic brush 391 reset. During the reset, the debris on the protective plate 260 and the telescopic plate 270 is cleaned until the debris is swept into the collection box 3920. Meanwhile, the continuous movement of the brush plate 390 and the multi-stage telescopic brush 391 will contact the scraper 380 on the base plate 100. The scraper 380 will scrape off the debris adhering to the brush plate 390 and the multi-stage telescopic brush 391, which will fall into the collection box 3920 directly below. This achieves automatic cleaning and collection of debris, eliminating the need for manual cleaning by personnel, greatly saving time and effort, and improving overall work efficiency.

[0030] Please refer to this carefully. Figure 1 and Figure 3 Both ends of the two sets of moving blocks 230 are fixed with slide bars 231, and the bottom plate 100 is provided with a slide groove 232 for the slide bars 231 to move.

[0031] By cooperating with the slide bar 231 and the slide groove 232, the moving block 230 can be ensured to move smoothly under the drive of the bidirectional threaded screw 220, avoiding deviation or jamming, thereby improving the stability and reliability of the clamping fixture.

[0032] Please refer to this carefully. Figure 1 and Figure 4 The top of the base plate 100 is provided with a clearance groove 352 for the extrusion rod 350 to move. A baffle 351 fixed to the base plate 100 is provided on one side of the clearance groove 352. The telescopic connection ends of the brush plate 390 and the multi-stage telescopic brush 391 are provided with a clearance groove 394 for the cleaning brush to move into.

[0033] By setting the clearance groove 352, sufficient movement space is provided for the extrusion rod 350, ensuring that the extrusion rod 350 reciprocates with the rotation of the threaded rod 340. At the same time, the baffle 351 can effectively prevent the debris generated during the processing from falling into the clearance groove 352, thus avoiding the debris from hindering the movement of the extrusion rod 350.

[0034] Please refer to this carefully. Figure 1 , Figure 2 and Figure 5 A collection box 3920 is provided directly below the brush plate 390 and is slidably connected to the base plate 100. Guide strips 3910 are slidably connected to both ends of the two sets of multi-stage telescopic brushes 391, and the guide strips 3910 are fixed to the moving block 230.

[0035] By setting up the collection box 3920, the debris can be conveniently collected and processed, preventing it from scattering in the work area and keeping the work environment clean. The guide bar 3910 provides precise guidance for the movement of the multi-stage telescopic brush 391, ensuring that the multi-stage telescopic brush 391 can always maintain synchronization with the brush plate 390 during movement, thereby improving the cleaning effect.

[0036] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A workpiece clamping fixture for a CNC machine tool, comprising a base plate (100), characterized in that: The base plate (100) is provided with a clamping and protective assembly (200) on its top, and a cleaning assembly (300) is provided on one side of the clamping and protective assembly (200); The clamping and protective assembly (200) includes a servo motor (210) installed on one side of the base plate (100). The output end of the servo motor (210) is fixed with a bidirectional threaded screw (220). Movable blocks (230) are rotatably connected to both sides of the outer wall of the bidirectional threaded screw (220). Fixed shafts (240) are provided on opposite sides of the two sets of movable blocks (230). A clamping plate (250) for clamping and fixing the workpiece is provided on one side of the fixed shaft (240). A protective plate (260) fixed to the base plate (100) is provided directly above the bidirectional threaded screw (220). Telescopic plates (270) are slidably connected to both sides of the protective plate (260). The ends of the two sets of telescopic plates (270) are fixed to the two sets of movable blocks (230). The cleaning assembly (300) includes a hydraulic tank (360) fixed to one side of the top of the base plate (100). A multi-stage telescopic tube (370) is connected to one side of the hydraulic tank (360). A brush plate (390) is fixed to the end of the multi-stage telescopic tube (370). A multi-stage telescopic brush (391) is slidably connected to both sides of the brush plate (390). Limiting strips (392) are fixed to both the front and rear ends of the multi-stage telescopic brush (391). Limiting grooves (393) for the movement of the limiting strips (392) are provided on both sides of the inner wall of the multi-stage telescopic brush (391) and the brush plate (390). A scraper (380) fixed to the base plate (100) is provided on one side of the bottom of the multi-stage telescopic brush (391) and the brush plate (390).

2. The workpiece clamping fixture for a CNC machine tool according to claim 1, characterized in that: Both sets of movable blocks (230) are fixed with slide bars (231) at both ends, and the base plate (100) is provided with a slide groove (232) for the slide bars (231) to move.

3. The workpiece clamping fixture for a CNC machine tool according to claim 1, characterized in that: A first synchronous pulley (310) is fixed on one side of the outer wall of the bidirectional threaded screw (220). A synchronous belt (320) meshes with the outer wall of the first synchronous pulley (310). A second synchronous pulley (330) is provided on the inner wall of the synchronous belt (320) away from the first synchronous pulley (310). A threaded rod (340) is fixed laterally at the center of the second synchronous pulley (330). A pressing rod (350) is rotatably connected to the outer wall of the threaded rod (340). The pressing rod (350) is slidably connected to the hydraulic tank (360).

4. The workpiece clamping fixture for a CNC machine tool according to claim 3, characterized in that: The bottom plate (100) has a clearance groove (352) on the top for the extrusion rod (350) to move, and a baffle (351) fixed to the bottom plate (100) is provided on one side of the clearance groove (352).

5. A workpiece clamping fixture for a CNC machine tool according to claim 1, characterized in that: The telescopic connection ends of the brush plate (390) and the multi-stage telescopic brush (391) are both provided with slots (394) for the cleaning brush to move into.

6. The workpiece clamping fixture for a CNC machine tool according to claim 1, characterized in that: A collection box (3920) is provided directly below the brush plate (390) and is slidably connected to the base plate (100). Both ends of the two sets of multi-stage telescopic brushes (391) are slidably connected to guide strips (3910), and the guide strips (3910) are fixed to the moving block (230).

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