Groove milling clamp of numerical control milling machine

Abstract

The utility model relates to the field of numerical control milling machines, in particular to a numerical control milling machine groove milling clamp. Comprising a machine body, a working table is installed on the surface of the machine body, a workpiece abuts against the upper surface of the working table, an adjusting structure is arranged on the upper surface of the working table and comprises two adjusting grooves, the two adjusting grooves are formed in the working table, and the inner walls of the two adjusting grooves are rotationally connected with two-way screw rods; a servo motor is fixedly connected to one side of the workbench, the output end of the servo motor is fixedly connected with a two-way screw, two adjusting plates are in threaded connection with the arc surface of the two-way screw, the adjusting plates are in sliding connection with the inner wall of the adjusting groove, and supporting rods are inserted into the surfaces of the adjusting plates in a threaded mode. The groove milling clamp of the numerical control milling machine has the advantages that the servo motor is used for driving, the two clamping plates are used for limiting a workpiece, the clamping plates can be conveniently disassembled, the adjusting flexibility is high, and workpieces with different shapes and sizes can be conveniently clamped.

Description

Technical Field

[0001] This utility model relates to the field of CNC milling machines, and in particular to a milling fixture for CNC milling machines. Background Technology

[0002] A CNC milling machine is a machine tool that performs automatic machining using computer numerical control technology. A CNC milling machine slotting fixture is a device used to fix the workpiece on the CNC milling machine and ensure that it maintains a stable and precise position during the slotting process.

[0003] Existing technologies, such as the utility model patent with publication number CN208496408U, disclose a CNC milling machine slotting fixture. This patent employs a fixed plate with two symmetrically distributed slide rails on its upper surface. A connecting plate is fixedly connected to the slide rails on the left side of the fixed plate's upper surface. A first ejector pin is rotatably connected to the upper side surface of the connecting plate. A sliding plate is slidably fitted between the two slide rails. A first bearing is located in the center of the sliding plate's interior. An angle value is provided around the first bearing on the right side of the sliding plate. A second ejector pin is fitted inside the first bearing, and a pointer is provided on the right end face of the second ejector pin, with the pointer pointing to the angle value. This CNC milling machine slotting fixture has a simple structure and is easy to operate. It can clamp circular workpieces of different lengths and sizes, has a wide range of applications, and can rotate circular workpieces to perform slotting at different angles on their surfaces. It eliminates the need for repeated clamping steps, improving slotting efficiency.

[0004] The inventors discovered the following problems in their daily work when using milling machine slotting fixtures: manual operation of the clamping plate for movement is inefficient, the clamping plate has poor adjustment flexibility, and it is not suitable for clamping workpieces of different shapes and sizes. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as low work efficiency and low flexibility in clamp adjustment.

[0006] To solve the above technical problems, this utility model provides a CNC milling machine slotting fixture, comprising: a machine body, a worktable mounted on the surface of the machine body, a workpiece abutting against the upper surface of the worktable, an adjustment structure provided on the upper surface of the worktable, the adjustment structure including two adjustment slots, the two adjustment slots being formed on the worktable, a bidirectional screw rotatably connected to the inner wall of the two adjustment slots, a servo motor fixedly connected to one side of the worktable, the output end of the servo motor being fixedly connected to the bidirectional screw, two adjustment plates threadedly connected to the arc surface of the bidirectional screw, the adjustment plates being slidably connected to the inner wall of the adjustment slots, a support rod threadedly inserted into the surface of the adjustment plate, a support frame rotatably connected to the end of the support rod near the workpiece, the surface of the support frame being slidably connected to the adjustment plate, an installation rod slidably connected to one side of the support frame, a spring sleeved on the arc surface of the installation rod, the two ends of the spring being fixedly connected to the installation rod and the support frame respectively, an installation block slidably connected to the inner wall of the support frame, the installation block being slidably connected to the arc surface of the installation rod, and a clamping plate fixedly connected to the side of the installation block away from the support frame.

[0007] The above components achieve the following effects: driven by a servo motor, the workpiece is limited by two clamps, the clamps can be easily disassembled, and the adjustment is highly flexible, making it easy to clamp workpieces of different shapes and sizes.

[0008] Preferably, a slide rod is fixedly connected to the inner wall of the adjusting groove, and the arc surface of the slide rod is slidably connected to the adjusting plate.

[0009] The effect achieved by the above components is to further limit the adjustment plate by means of the slide bar, so that the adjustment plate is more stable when moving along the adjustment groove.

[0010] Preferably, the lower surface of the adjusting plate is rotatably connected to two pulleys, and the two pulleys are slidably connected to the inner wall of the adjusting groove.

[0011] The effect achieved by the above components is to reduce the friction between the adjusting plate and the inner wall of the adjusting groove by using pulleys, so that the adjusting plate moves more smoothly along the adjusting groove.

[0012] Preferably, the upper surface of the support frame is provided with a scale.

[0013] The effect achieved by the above components is: by referring to the scale, users can easily and intuitively judge the moving distance of the support frame.

[0014] Preferably, the end of the mounting rod near the support frame is arc-shaped.

[0015] The effect achieved by the above components is that the end of the mounting rod near the support frame is arc-shaped, which makes it easier for the mounting rod to slide into the mounting block.

[0016] Preferably, a pull ring is fixedly connected to the end of the mounting rod away from the support frame.

[0017] The effect achieved by the above components is that the operating pull ring moves the mounting rod, making it convenient for the user to move the mounting rod.

[0018] Preferably, a protective plate is fixedly connected to the side of the clamp away from the mounting block.

[0019] The effect achieved by the above components is to reduce damage to the workpiece caused by the clamping plate through the protective plate.

[0020] Compared with related technologies, the CNC milling machine slotting fixture provided by this utility model has the following beneficial effects:

[0021] This utility model provides a milling fixture for CNC milling machines. By setting an adjustment structure, a servo motor and a bidirectional screw work together to quickly move two clamping plates to limit the workpiece, improving the degree of automation. The distance between the clamping plates and the adjustment plate is adjustable, which is convenient for limiting irregularly shaped workpieces. The clamping plates and the support frame can be easily disassembled and assembled, allowing users to replace the clamping plates that fit the workpiece better according to the production needs of the same batch, without the need to manufacture the entire fixture. Attached Figure Description

[0022] Figure 1 This utility model provides a structural schematic diagram of a CNC milling machine slotting fixture;

[0023] Figure 2 for Figure 1 The diagram shows the structural schematic of the adjustment structure.

[0024] Figure 3 for Figure 2 A partial structural diagram of the adjustment structure shown;

[0025] Figure 4 for Figure 2 A partial structural diagram of the adjustment structure is shown.

[0026] Numbered in the diagram: 1. Machine body; 2. Worktable; 3. Workpiece; 4. Adjustment structure; 401. Adjustment groove; 402. Bidirectional screw; 403. Servo motor; 404. Adjustment plate; 405. Slide rod; 406. Pulley; 407. Support rod; 408. Support frame; 409. Scale; 410. Mounting rod; 411. Spring; 412. Pull ring; 413. Mounting block; 414. Clamping plate; 415. Protective plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0029] Please see Figures 1 to 4 The present invention provides a CNC milling machine slotting fixture, comprising: a machine body 1, a worktable 2 mounted on the surface of the machine body 1, a workpiece 3 abutting the upper surface of the worktable 2, and an adjustment structure 4 provided on the upper surface of the worktable 2.

[0030] In the embodiments of this utility model, please refer to Figure 1 and Figure 4The adjustment structure 4 includes two adjustment slots 401, which are formed on the worktable 2. A bidirectional screw 402 is rotatably connected to the inner wall of each adjustment slot 401. A servo motor 403 is fixedly connected to one side of the worktable 2. The output end of the servo motor 403 is fixedly connected to the bidirectional screw 402. Two adjustment plates 404 are threadedly connected to the arc surface of the bidirectional screw 402. The adjustment plates 404 are slidably connected to the inner wall of the adjustment slots 401. A support rod 407 is threadedly inserted into the surface of the adjustment plates 404. A support frame 408 is rotatably connected to the end of the support rod 407 near the workpiece 3. The surface of the support frame 408 is flush with the inner wall of the workpiece 3. The adjusting plate 404 is slidably connected. A mounting rod 410 is slidably connected to one side of the support frame 408. A spring 411 is fitted onto the arc surface of the mounting rod 410. The two ends of the spring 411 are fixedly connected to the mounting rod 410 and the support frame 408, respectively. A mounting block 413 is slidably connected to the inner wall of the support frame 408. The mounting block 413 is slidably connected to the arc surface of the mounting rod 410. A clamping plate 414 is fixedly connected to the side of the mounting block 413 away from the support frame 408. Driven by a servo motor 403, the two clamping plates 414 limit the movement of the workpiece 3. The clamping plates 414 are easily disassembled, offering high adjustment flexibility and facilitating the clamping of workpieces of varying shapes and sizes. For the same workpiece 3, a slide rod 405 is fixedly connected to the inner wall of the adjusting groove 401. The arc surface of the slide rod 405 is slidably connected to the adjusting plate 404. The slide rod 405 further limits the adjusting plate 404, making the adjusting plate 404 more stable when moving along the adjusting groove 401. Two pulleys 406 are rotatably connected to the lower surface of the adjusting plate 404. The two pulleys 406 are slidably connected to the inner wall of the adjusting groove 401. The pulleys 406 reduce the friction between the adjusting plate 404 and the inner wall of the adjusting groove 401, making the adjusting plate 404 move more smoothly along the adjusting groove 401. A scale 40 is provided on the upper surface of the support frame 408. 9. Refer to the scale 409 to help the user intuitively judge the moving distance of the support frame 408. The end of the mounting rod 410 near the support frame 408 is arc-shaped, which makes it easy for the mounting rod 410 to slide into the mounting block 413. The end of the mounting rod 410 away from the support frame 408 is fixedly connected to a pull ring 412. Operating the pull ring 412 drives the mounting rod 410 to move, which makes it easy for the user to move the mounting rod 410. The side of the clamping plate 414 away from the mounting block 413 is fixedly connected to a protective plate 415, which reduces the damage of the clamping plate 414 to the workpiece 3.

[0031] The working principle of the CNC milling machine slotting fixture provided by this utility model is as follows: By setting the adjustment structure 4, the support rods 407 on the two adjustment plates 404 are first rotated. The support rods 407 move along the adjustment plates 404 by means of threads. The support rods 407 drive the support frame 408 to move. The support frame 408 then drives the clamping plate 414 to move through the mounting block 413. The distance between the two clamping plates 414 and the adjustment plate 404 is adjusted according to the shape of the workpiece 3 to be processed. If the workpiece 3 is a symmetrical part, the distance between the two clamping plates 414 and the adjustment plate 404 is adjusted to be the same. If the workpiece 3 is an irregularly shaped part, the distance is adjusted according to the shape of the workpiece. Adjust the distance between the center and both sides, and position the corresponding clamping plates 414. Then place the workpiece 3 at a suitable position on the worktable 2. The servo motor 403 drives the bidirectional screw 402 to rotate. The bidirectional screw 402 drives the two adjusting plates 404 to move towards each other simultaneously via the thread. The adjusting plates 404 then drive the clamping plates 414 on the support frame 408 to move, so that the two clamping plates 414 abut against the sides of the workpiece 3, fixing the workpiece 3 at the center position of the worktable 2. When it is necessary to replace the clamping plates 414 according to the shape of the workpiece 3 in the same batch, first move them away from the support frame 408. Pull the mounting rod 410 in the direction of the movement. The mounting rod 410 slides away from the inner wall of the mounting block 413 and the support frame 408. The spring 411 is in a stretched state, releasing the restriction on the mounting block 413. Remove the clamping plate 414 and the mounting block 413 in the direction away from the support frame 408. Then, take a new clamping plate 414 and the mounting block 413 and move them into the support frame 408. Release the mounting rod 410. Under the action of the spring force of the spring 411, the mounting rod 410 moves into the support frame 408 and the mounting block 413, fixing the position of the new clamping plate 414. The adjusting plate 404 is further restricted by the sliding rod 405. The adjusting plate 404 moves more stably along the adjusting groove 401. The pulley 406 reduces the friction between the adjusting plate 404 and the inner wall of the adjusting groove 401, making the adjusting plate 404 move more smoothly along the adjusting groove 401. Referring to the scale 409, the user can intuitively judge the moving distance of the support frame 408. The end of the mounting rod 410 near the support frame 408 is arc-shaped, which makes it easy for the mounting rod 410 to slide into the mounting block 413. The operating pull ring 412 drives the mounting rod 410 to move, which makes it easy for the user to move the mounting rod 410. The protective plate 415 reduces the damage of the clamping plate 414 to the workpiece 3.

[0032] The circuits and controls involved in this utility model are all existing technologies and will not be described in detail here.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A milling fixture for a CNC milling machine, characterized in that, include: A machine body (1) is provided with a worktable (2) mounted on its surface. A workpiece (3) abuts against the upper surface of the worktable (2). An adjustment structure (4) is provided on the upper surface of the worktable (2). The adjustment structure (4) includes two adjustment slots (401). The two adjustment slots (401) are opened on the worktable (2). A bidirectional screw (402) is rotatably connected to the inner wall of the two adjustment slots (401). A servo motor (403) is fixedly connected to one side of the worktable (2). The output end of the servo motor (403) is fixedly connected to the bidirectional screw (402). Two adjustment plates (404) are threadedly connected to the arc surface of the bidirectional screw (402). The adjustment plates (404) are slidably connected to the inner wall of the adjustment slots (401). A support rod (407) is threadedly inserted into the surface of the plate (404). A support frame (408) is rotatably connected to one end of the support rod (407) near the workpiece (3). The surface of the support frame (408) is slidably connected to the adjusting plate (404). An installation rod (410) is slidably connected to one side of the support frame (408). A spring (411) is sleeved on the arc surface of the installation rod (410). The two ends of the spring (411) are fixedly connected to the installation rod (410) and the support frame (408) respectively. An installation block (413) is slidably connected to the inner wall of the support frame (408). The installation block (413) is slidably connected to the arc surface of the installation rod (410). A clamping plate (414) is fixedly connected to the side of the installation block (413) away from the support frame (408).

2. A CNC milling machine slotting fixture according to claim 1, characterized in that, The inner wall of the adjustment groove (401) is fixedly connected to a slide rod (405), and the arc surface of the slide rod (405) is slidably connected to the adjustment plate (404).

3. A CNC milling machine slotting fixture according to claim 1, characterized in that, The lower surface of the adjusting plate (404) is rotatably connected to two pulleys (406), and the two pulleys (406) are slidably connected to the inner wall of the adjusting groove (401).

4. A CNC milling machine slotting fixture according to claim 1, characterized in that, The upper surface of the support frame (408) is provided with a scale (409).

5. A CNC milling machine slotting fixture according to claim 1, characterized in that, The end of the mounting rod (410) near the support frame (408) is arc-shaped.

6. A CNC milling machine slotting fixture according to claim 1, characterized in that, A pull ring (412) is fixedly connected to one end of the mounting rod (410) away from the support frame (408).

7. A CNC milling machine slotting fixture according to claim 1, characterized in that, A protective plate (415) is fixedly connected to the side of the clamp (414) away from the mounting block (413).

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