Quick workpiece clamping fixture for numerical control thread turning machine

Abstract

The utility model provides a quick clamping workpiece fixture for numerical control thread machine tool relates to numerical control thread machine tool technical field, including numerical control thread machine tool, the inside of numerical control thread machine tool is provided with moving platform, the inside of moving platform is provided with quick clamping subassembly, quick clamping subassembly includes motor, the output of motor is connected with gear wheel. In the utility model, the clamping intensity of moving plate can be adjusted through controller, the pressure sensor can play the role of monitoring, the gear wheel can be driven to rotate through the opening motor, through the meshing connection of two groups of racks, drive two groups of moving plate to move and clamping inside, realize the clamping fixation of workpiece, when the pressure of pressure sensor reaches the required pressure, the motor will be automatically closed under the action of controller. Avoided the adjusting range of relative limitedness of the clamping force of existing device, the problem that the flexibility is not high when using in the machining scene of accurate control clamping force.

Description

Technical Field

[0001] This utility model relates to the field of CNC threading machine tool technology, and in particular to a quick-clamping workpiece fixture for CNC threading machine tools. Background Technology

[0002] CNC threading machines are widely used in industries such as construction, automotive, shipbuilding, aerospace, machinery manufacturing, petroleum, chemical, coal, geological exploration, and urban water supply and drainage. They enable precision and batch processing of threaded mechanical parts, improving overall part quality, reducing production costs, and increasing production efficiency.

[0003] As described in announcement number CN215880804U, a CNC machine tool fixture that is easy to disassemble and replace includes a fixture body, a sliding adjustment device, and a clamping and fixing device. A support column is fixedly mounted on the bottom of the fixture body, and the bottom of the support column is connected to the interior of the sliding adjustment device. The clamping and fixing device is welded to the bottom of the sliding adjustment device. Positioning bolts are threaded through the top and bottom of the clamping and fixing device, and rubber pads are fixed to the inner ends of the positioning bolts. A slider is connected to the bottom of the support column, and a lead screw is slidably connected inside the slider. A drive motor is connected to the left end of the lead screw. The inner end of the fixture body has an arc-shaped structure, and the clamping and fixing device has a U-shaped structure. This easily disassembled and replaced CNC machine tool fixture facilitates automated control of telescopic clamping of workpieces, improves the clamping and positioning effect, and provides quick and stable clamping and disassembly, ensuring stability and reliability.

[0004] This patent enables automated control of telescopic clamping of workpieces, improving the clamping and positioning effect of the fixture. However, when the existing device clamps the tool, the fixture mainly relies on positioning bolts and rubber pads for clamping, and the adjustment range of clamping force is relatively limited. It is not flexible enough for processing scenarios that require precise control of clamping force, and its practicality needs to be improved. Utility Model Content

[0005] The purpose of this invention is to solve the problem that existing devices rely mainly on positioning bolts and rubber pads for clamping tools, resulting in a relatively limited range of clamping force adjustment. This makes them inflexible for processing scenarios requiring precise control of clamping force, and their practicality needs to be improved.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a quick-clamping workpiece fixture for a CNC threading machine tool, comprising a CNC threading machine tool, wherein a movable stage is provided inside the CNC threading machine tool, a quick-clamping assembly is provided inside the movable stage, the quick-clamping assembly includes a motor, a gear is connected to the output end of the motor, a front cover is connected to the front end surface of the movable stage, a set of racks is connected to both the front and rear end surfaces of the gears, a movable plate is connected to the top of the racks, a fixed block is connected to the bottom of one side of the movable plate, a guide block is connected to the bottom of the fixed block, and a controller is provided on the surface of the CNC threading machine tool.

[0007] Furthermore, the position and size of the gear match the position and size of the rack, and the gear and rack form a meshing connection.

[0008] Furthermore, the controller is electrically connected to the motor, and the output end of the motor is fixedly connected to the gear.

[0009] Furthermore, a guide hole is provided at the position where the moving stage matches the guide block.

[0010] Furthermore, the movable plate is provided with a protective clamping assembly, which includes a support rod, a first spring sleeved on the outer surface of the support rod, and sliders connected to both sides of the support rod.

[0011] Furthermore, a sliding hole is provided through the interior of the slider, a first rotating shaft is connected to the front end surface of the slider, and a connecting rod is connected to the surface of the first rotating shaft.

[0012] Furthermore, a second rotating shaft is connected to one side of the connecting rod, a push plate is connected to the outer surface of the second rotating shaft, and a pressure sensor is connected to the outer side of the push plate.

[0013] Furthermore, a clamping plate is connected to the outside of the pressure sensor, and holes are opened inside the four corners of the movable plate. A second spring is installed inside the hole, and a push rod is connected to the front end of the second spring.

[0014] Furthermore, dampers are connected to both the upper and lower surfaces of the movable plate, the slider is slidably connected to the support rod through the sliding hole, and the connecting rod is rotatably connected to the push plate through the second rotating shaft.

[0015] Furthermore, the slider and the first spring form an elastic structure, and the push rod and the second spring form an elastic structure.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] 1. In this invention, the clamping force of the moving plates can be adjusted by a controller, and a pressure sensor can monitor this force. Turning on the motor drives the gears to rotate, and through the meshing of two sets of racks, the two moving plates move inward to clamp and fix the workpiece. When the pressure sensor reaches the required pressure, the motor automatically shuts off under the control of the controller. This avoids the problem of existing devices having a relatively limited range of clamping force adjustment and low flexibility in processing scenarios requiring precise clamping force control.

[0018] 2. In this utility model, when clamping the workpiece, the clamping plate will first contact the workpiece, and then the moving plate will push the connecting rod to rotate and push the slider to squeeze the first spring. At the same time, the push rod will also squeeze the second spring. With the help of the damper, it can play a shock absorption and buffering effect, avoiding the problem that the direct clamping impact on the workpiece is too large and easily damages the workpiece. Attached Figure Description

[0019] Figure 1 This utility model presents a three-dimensional structural diagram of a quick-clamping workpiece fixture for CNC threading machine tools.

[0020] Figure 2 This utility model presents a schematic diagram of a moving table structure for a quick-clamping workpiece fixture for a CNC threading machine tool.

[0021] Figure 3 An exploded view of the moving table structure of a quick-clamping workpiece fixture for a CNC threading machine tool is provided for this utility model.

[0022] Figure 4 An exploded view of the fixing block of a quick-clamping workpiece fixture for CNC threading machine tools is provided for this utility model.

[0023] Figure 5 This utility model presents a cross-sectional structural diagram of a fixing block for a quick-clamping workpiece fixture used in CNC threading machines.

[0024] Legend: 1. CNC threading machine; 2. Moving table; 3. Quick clamping assembly; 301. Motor; 302. Front cover; 303. Gear; 304. Rack; 305. Moving plate; 306. Fixing block; 307. Guide block; 4. Protective clamping assembly; 401. Support rod; 402. First spring; 403. Slider; 404. Sliding hole; 405. First rotating shaft; 406. Connecting rod; 407. Second rotating shaft; 408. Push plate; 409. Pressure sensor; 410. Clamping plate; 411. Hole; 412. Second spring; 413. Push rod; 414. Damper; 5. Controller. Detailed Implementation

[0025] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0026] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0027] Example 1, such as Figure 1 - Figure 3 As shown, this utility model provides a quick-clamping workpiece fixture for a CNC threading machine tool, including a CNC threading machine tool 1. A movable stage 2 is provided inside the CNC threading machine tool 1. A quick-clamping assembly 3 is provided inside the movable stage 2. The quick-clamping assembly 3 includes a motor 301. A gear 303 is connected to the output end of the motor 301. A front cover 302 is connected to the front surface of the movable stage 2. A set of racks 304 is connected to both the front and rear surfaces of the gear 303. A movable plate 305 is connected to the top of the rack 304. A fixing block 306 is connected to the bottom side of one side of the movable plate 305. A guide block 307 is connected to the bottom of the fixing block 306. A controller 5 is provided on the surface of the CNC threading machine tool 1. The position and size of the gear 303 match the position and size of the rack 304. The gear 303 and rack 304 form a meshing connection. The controller 5 is electrically connected to the motor 301. The output end of the motor 301 is fixedly connected to the gear 303. A guide hole is provided at the position where the movable stage 2 matches the guide block 307.

[0028] The effect achieved in Embodiment 1 is as follows: When it is necessary to clamp and fix the workpiece, the workpiece to be processed can be placed on the surface of the moving table 2. Then, the controller 5 activates the forward rotation function of the motor 301, at which time the output end of the motor 301 drives the gear 303 to rotate forward. While the gear 303 rotates forward, it engages with the two sets of racks 304 in the forward direction, thereby driving the two sets of racks 304 and the two sets of moving plates 305 to move inward. During this process, the guide block 307 slides in the guide groove to improve the stability of the moving plate 305 during movement. At the same time, the pressure sensor 409 monitors the clamping pressure in real time. When the clamping pressure reaches the preset value, the motor 301 will automatically shut off. After the workpiece is processed, the reverse rotation function of the motor 301 can be activated, causing the gear 303 at the output end of the motor 301 to push the two sets of racks 304 to move to both sides simultaneously, thereby releasing the fixation of the workpiece, which can then be removed. In addition, when clamping different workpieces, different pressure values ​​can be set through the controller 5 to adapt to the clamping requirements of different workpieces. This effectively avoids the problem of limited clamping force adjustment range of existing devices, resulting in insufficient flexibility in processing scenarios that require precise control of clamping force.

[0029] Example 2, as Figure 4 and Figure 5 As shown, a protective clamping assembly 4 is provided inside the movable plate 305. The protective clamping assembly 4 includes a support rod 401, a first spring 402 sleeved on the outer surface of the support rod 401, and sliders 403 connected to both sides of the support rod 401. A sliding hole 404 is provided through the inside of the slider 403. A first rotating shaft 405 is connected to the front end surface of the slider 403. A connecting rod 406 is connected to the surface of the first rotating shaft 405. A second rotating shaft 407 is connected to one side of the connecting rod 406. A push plate 408 is connected to the outer surface of the second rotating shaft 407. A pressure sensor 409 is connected to the outer side of the push plate 408. A clamping plate 410 is connected to the outside of the sensor 409. Holes 411 are opened inside the four corners of the moving plate 305. A second spring 412 is installed inside the hole 411. A push rod 413 is connected to the front end of the second spring 412. A damper 414 is connected to the upper and lower surfaces of the moving plate 305. The slider 403 is slidably connected to the support rod 401 through the sliding hole 404. The connecting rod 406 is rotatably connected to the push plate 408 through the second rotating shaft 407. An elastic structure is formed between the slider 403 and the first spring 402. An elastic structure is formed between the push rod 413 and the second spring 412.

[0030] The effect achieved in Embodiment 2 is as follows: During the clamping operation, the clamping plate 410 will first contact both sides of the workpiece. As the moving plate 305 continues to move forward, the push plate 408 will rotate relative to the connecting rod 406 via the second rotating shaft 407 under the action of force. At the same time, the other side of the connecting rod 406 will also rotate around the first rotating shaft 405, thereby driving the first rotating shaft 405 to push the slider 403. The slider 403 then slides smoothly along the sliding hole 404 on the surface of the support rod 401, compressing the first spring 402. During this process, the second spring 412 will also be compressed by the push rod 413. With the buffering effect of the damper 414, the entire clamping process can achieve a good shock absorption and protection effect, effectively avoiding damage to the workpiece caused by the large impact force generated by direct clamping.

[0031] Working principle: The clamping force of the moving plate 305 can be adjusted by the controller 5, and the pressure sensor 409 can monitor it. When the motor 301 is turned on, it drives the gear 303 to rotate. Through the meshing connection of two sets of racks 304, the two sets of moving plates 305 move inward to clamp and fix the workpiece. When the pressure of the pressure sensor 409 reaches the required pressure, the motor 301 will automatically shut off under the action of the controller 5. This avoids the problem of the relatively limited adjustment range of the clamping force of existing devices and the lack of flexibility when used in processing scenarios with precise control of clamping force. When clamping the workpiece, the clamping plate 410 will first contact the workpiece. Then, the moving plate 305 will push the connecting rod 406 to rotate, pushing the slider 403 to compress the first spring 402. At the same time, the push rod 413 will also compress the second spring 412. With the help of the damper 414, a shock absorption and buffering effect can be achieved, avoiding the problem of large impact force on the workpiece and easy damage to the workpiece.

[0032] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A quick-clamping workpiece fixture for a CNC threading machine tool, comprising a CNC threading machine tool (1), characterized in that: The CNC threading machine tool (1) is equipped with a moving table (2) inside. The movable stage (2) is equipped with a quick clamping assembly (3), which includes a motor (301). The output end of the motor (301) is connected to a gear (303). The front end surface of the movable stage (2) is connected to a front cover (302). The front and rear ends of the gear (303) are connected to a set of racks (304). The top of the racks (304) is connected to a movable plate (305). The bottom side of the movable plate (305) is connected to a fixing block (306). The bottom of the fixing block (306) is connected to a guide block (307). The surface of the CNC threading machine (1) is equipped with a controller (5). The movable plate (305) is equipped with a protective clamping assembly (4). The protective clamping assembly (4) includes a support rod (401). The outer surface of the support rod (401) is fitted with a first spring. 402), both sides of the support rod (401) are connected to sliders (403), the sliders (403) have sliding holes (404) through them, the front end of the sliders (403) is connected to a first rotating shaft (405), the surface of the first rotating shaft (405) is connected to a connecting rod (406), one side of the connecting rod (406) is connected to a second rotating shaft (407), the outer surface of the second rotating shaft (407) is connected to a push plate (408), the outer side of the push plate (408) is connected to a pressure sensor (409), the outer side of the pressure sensor (409) is connected to a clamping plate (410), the four corners of the moving plate (305) are all provided with holes (411), the holes (411) are provided with a second spring (412), the front end of the second spring (412) is connected to a top rod (413).

2. The quick-clamping workpiece fixture for CNC threading machine tools according to claim 1, characterized in that: The position and size of the gear (303) match the position and size of the rack (304), and the gear (303) and the rack (304) form a meshing connection.

3. The quick-clamping workpiece fixture for CNC threading machine tools according to claim 2, characterized in that: The controller (5) is electrically connected to the motor (301), and the output end of the motor (301) is fixedly connected to the gear (303).

4. The quick-clamping workpiece fixture for CNC threading machine tools according to claim 1, characterized in that: The upper and lower surfaces of the movable plate (305) are both connected to dampers (414), the slider (403) is slidably connected to the support rod (401) through the sliding hole (404), and the connecting rod (406) is rotatably connected to the push plate (408) through the second rotating shaft (407).

5. The quick-clamping workpiece fixture for CNC threading machine tools according to claim 4, characterized in that: The slider (403) and the first spring (402) form an elastic structure, and the push rod (413) and the second spring (412) form an elastic structure.

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