Pressure-controllable machine tool clamp

Abstract

The utility model discloses a pressure controllable type machine tool clamp, belongs to the technical field of machine tool clamps, and aims to solve the problems that a workpiece cannot be clamped stably and cannot be protected. The pressure controllable type machine tool clamp comprises a concave frame, a disc is fixedly connected to the top of the concave frame, and a rotating shaft penetrating through the disc is rotationally connected to the upper surface of the bottom of the concave frame; the worm wheel is matched with the worm, the rotating wheel is rotated to enable the worm to rotate, and the worm wheel meshed with the worm drives the rotating shaft to rotate, so that the disc rotates, the disc rotates to drive the arc-shaped guide groove to push the guide wheel to move, and the guide wheel drives the sliding rod to move. The multiple sliding rods are driven to move towards the inner side, the multiple arc-shaped chucks are driven to clamp and fix a workpiece, the workpiece is clamped from four directions at the same time, the workpiece can be stably fixed, production errors caused by deviation of the workpiece in the machining process are avoided, and the production precision and stability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of machine tool fixtures, and in particular relates to a pressure-controllable machine tool fixture. Background Art

[0002] A fixture is a device used to fix the processing object in the mechanical manufacturing process so that it occupies the correct position for construction or inspection. The fixture can be divided into welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc. Among them, machine tool fixtures are the most common. Machine tool fixtures are tools or equipment used to clamp workpieces on machine tools for processing. They are designed to maintain the stability of the workpiece during the processing process and ensure processing accuracy and safety. They can have different designs and structures according to the shape of the workpiece and processing requirements.

[0003] The patent announcement number of the prior art is CN203509600U, which is a pressure-controllable machine tool fixture. The above patent includes a fixture seat, a slide rail, an adjusting screw, a moving block and a clamping block. The lower end of the slide rail is connected to the fixture seat, the upper end of the slide rail is clamped on the concave edge of the lower end of the moving block, the lower end of the clamping block is pressed on the concave edge of the upper end of the moving block, the adjusting screw is meshed with the moving block, and a scale is provided on the adjusting screw. The device solves the problem that the clamping pressure caused by the existing machine tool fixture is difficult to control, and has the advantages of simple structure and easy manufacturing; but in actual use, there are still the following deficiencies: from a practical point of view, the device can only clamp the workpiece in two directions through two clamping blocks, and the position is prone to deviation during processing, thereby causing production errors; at the same time, the device has no buffering protection measures for the workpiece. If the force is not well controlled, it will leave indentations on the surface of the workpiece, and even cause product damage.

[0004] Therefore, a pressure-controllable machine tool fixture is needed to solve the problems of unstable workpiece clamping and lack of protection measures for the workpiece in the prior art. Utility Model Content

[0005] The purpose of the utility model is to provide a pressure-controllable machine tool fixture to solve the problems raised in the above background technology.

[0006] The top of the rotary shaft is fixedly connected with a rotary table, and the top of the rotary table is provided with a plurality of arc guide grooves, and the top of the rotary table is fixedly connected with a plurality of limiting slide grooves, and the tops of the plurality of limiting slide grooves are slidably connected with slide rods, and the tops of the plurality of slide rods are fixedly connected with guide wheels corresponding to the arc guide grooves, and the tops of the plurality of slide rods are fixedly connected with support rods, and the tops of the plurality of support rods are provided with buffer mechanisms.

[0007] It should be noted in the solution that a plurality of mounting positioning holes are provided at the bottom of the concave frame.

[0008] It is further worth noting that the worm wheel is meshed with the worm.

[0009] It should be further explained that a rocker is fixedly connected to the outer side of the rotating wheel.

[0010] As a preferred implementation, the plurality of arc-shaped guide grooves and the plurality of limit sliding grooves are distributed in a circle with the center of the turntable as the center.

[0011] As a preferred embodiment, the buffer mechanism includes a storage plate fixedly connected to the top of the support rod, a baffle plate fixedly connected to the top of the storage plate, two buffer tube sleeves fixedly connected to the inner side of the baffle plate, damping rods are installed on the inner walls of the two buffer tube sleeves, springs are sleeved on the outer walls of the two damping rods, and arc-shaped clamps are fixedly connected to the inner sides of the two damping rods.

[0012] As a preferred implementation, the spring is fixedly connected between the inner side of the buffer tube sleeve and the outer side of the arc-shaped clamp.

[0013] Compared with the prior art, the pressure-controllable machine tool fixture provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting a worm wheel and a worm gear to cooperate, the rotating wheel rotates to make the worm gear rotate, so that the worm wheel meshing with it drives the rotating shaft to rotate, thereby causing the disc to rotate. The rotation of the disc drives the arc guide groove to push the guide wheel to move, and the guide wheel drives the slide bar to move, so that multiple slide bars move inward, driving multiple arc chucks to clamp and fix the workpiece, and clamping the workpiece from four directions at the same time, so that the workpiece can be stably fixed, avoiding the workpiece from being offset during the processing process to cause production errors, thereby improving the production accuracy and stability.

[0015] (2) By setting up a buffer mechanism, the damping rod and the spring cooperate to buffer the clamping force on the workpiece, thereby avoiding indentations on the workpiece surface during the clamping process and effectively protecting the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model from a first perspective;

[0017] Figure 2 This is a schematic diagram of the structure of the utility model from a second viewing angle;

[0018] Figure 3 This is a schematic diagram of the structure of the utility model from a third viewing angle;

[0019] Figure 4 It is a structural schematic diagram of the buffer mechanism of the utility model.

[0020] In the figure: 1, concave frame; 2, disc; 3, rotating shaft; 4, worm gear; 5, rotating rod; 6, worm; 7, rotating wheel; 8, rotating disk; 9, arc guide groove; 10, limiting slide groove; 11, sliding rod; 12, guide wheel; 13, supporting rod; 14, buffer mechanism; 1401, storage plate; 1402, baffle; 1403, buffer sleeve; 1404, damping rod; 1405, spring; 1406, arc chuck. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] See also Figure 1-4 The utility model provides a pressure-controllable machine tool fixture, including a concave frame 1, a disc 2 is fixedly connected to the top of the concave frame 1, a rotating shaft 3 penetrating the disc 2 is rotatably connected to the upper surface of the bottom of the concave frame 1, a worm wheel 4 is fixedly connected to the outer wall of the rotating shaft 3, a rotating rod 5 is rotatably connected between the two sides of the concave frame 1, a worm 6 corresponding to the worm wheel 4 is installed at the center of the rotating rod 5, a rotating wheel 7 is fixedly connected to one side of the rotating rod 5, a rotating disk 8 is fixedly connected to the top of the rotating shaft 3, a plurality of arc-shaped guide grooves 9 are penetrated through the top of the rotating disk 8, a plurality of limiting slide grooves 10 are fixedly connected to the top of the rotating disk 8, a plurality of limiting slide grooves 10 are slidably connected to the tops of slide rods 11, a plurality of slide rods 11 are fixedly connected to the tops of guide wheels 12 corresponding to the arc-shaped guide grooves 9, a plurality of slide rods 11 are fixedly connected to the tops of the support rods 13, and a plurality of support rods 13 are provided with buffer mechanisms 14 on the tops.

[0023] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that a plurality of mounting positioning holes are arranged at the bottom of the concave frame 1. With the help of the positioning holes, the concave frame 1 can be stably mounted on the surface of the machine tool, and it is convenient for later maintenance and disassembly.

[0024] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the worm wheel 4 is meshed with the worm 6, and the transmission of the worm wheel 4 and the worm 6 is characterized by good stability, low noise and vibration during the transmission process, which is beneficial to improving the working stability and reliability of the processing. At the same time, the transmission of the worm wheel 4 and the worm 6 has a self-locking function to prevent the transmission parts from being pushed in the opposite direction, which helps to improve the safety of the device.

[0025] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that a rocker is fixedly connected to the outer side of the rotating wheel 7, and the rocker makes the rotation of the rotating wheel 7 more convenient, which greatly reduces the labor intensity of the staff and improves the work efficiency.

[0026] Further as Figure 1 , Figure 2 and Figure 3 As shown, it is worth explaining in detail that the multiple arc guide grooves 9 and the multiple limit slide grooves 10 are distributed in a circle with the center of the turntable 8 as the center, so that the multiple slide rods 11 can move synchronously at the same time to clamp the workpiece, and the clamping effect is more stable.

[0027] According to the above working process, it can be known that: by setting the worm wheel 4 and the worm 6 to cooperate, multiple sliding rods 11 are moved inward, driving multiple arc-shaped chucks 1406 to clamp and fix the workpiece, and clamp the workpiece from four directions at the same time, so that the workpiece can be stably fixed, avoiding the deviation of the workpiece during the processing process to cause production errors, thereby improving the production accuracy and stability.

[0028] Further as Figure 4 As shown, it is worth explaining in detail that the buffer mechanism 14 includes a storage plate 1401 fixedly connected to the top of the support rod 13, a baffle 1402 is fixedly connected to the top of the storage plate 1401, two buffer sleeves 1403 are fixedly connected to the inner side of the baffle 1402, damping rods 1404 are installed on the inner walls of the two buffer sleeves 1403, springs 1405 are sleeved on the outer walls of the two damping rods 1404, and arc-shaped clamps 1406 are fixedly connected to the inner sides of the two damping rods 1404. By setting the buffer mechanism 14, a buffering effect is played on the clamping force exerted on the workpiece, thereby avoiding indentations on the workpiece surface during the clamping process.

[0029] Further as Figure 4As shown, it is worth explaining in detail that the spring 1405 is fixedly connected between the inner side of the buffer sleeve 1403 and the outer side of the arc-shaped clamp 1406 to ensure that the spring 1405 and the damping rod 1404 are matched, so that the arc-shaped clamp 1406 can be flexibly extended and retracted according to actual conditions to effectively protect the workpiece.

[0030] This solution has the following working process: in actual use, the rotating wheel 7 is rotated to rotate the worm 6, so that the worm wheel 4 meshing with it drives the rotating shaft 3 to rotate, thereby causing the disc 2 to rotate. The rotation of the disc 2 drives the arc guide groove 9 to push the guide wheel 12 to move, and the guide wheel 12 drives the slide bar 11 to move, so that multiple slide bars 11 move inward, driving multiple arc chucks 1406 to clamp and fix the workpiece, and clamp the workpiece from four directions at the same time. At the same time, the spring 1405 and the damping rod 1404 cooperate, so that the arc chuck 1406 can be flexibly extended and retracted according to actual conditions, so as to effectively protect the workpiece.

[0031] In summary: by setting the worm wheel 4 and the worm 6 to cooperate, the multiple sliding rods 11 are moved inward, driving the multiple arc-shaped chucks 1406 to clamp and fix the workpiece, and the workpiece is clamped from four directions at the same time, so that the workpiece can be stably fixed, avoiding the deviation of the workpiece during the processing and causing production errors, thereby improving the production accuracy and stability; by setting the buffer mechanism 14, a buffering effect is played on the clamping force on the workpiece, avoiding leaving indentations on the workpiece surface during the clamping process.

Claims

1. A pressure-controllable machine tool fixture, comprising a recessed frame (1), characterized in that: The top of the concave frame (1) is fixedly connected to a disc (2); the upper surface of the bottom of the concave frame (1) is rotatably connected to a rotating shaft (3) that penetrates the disc (2); the outer wall of the rotating shaft (3) is fixedly connected to a worm wheel (4); a rotating rod (5) is rotatably connected between the two sides of the concave frame (1); a worm (6) corresponding to the worm wheel (4) is installed at the center of the rotating rod (5); a rotating wheel (7) is fixedly connected to one side of the rotating rod (5); and a rotating disk (8) is fixedly connected to the top of the rotating shaft (3). A plurality of arc-shaped guide grooves (9) are formed through the top of the turntable (8), a plurality of limit slide grooves (10) are fixedly connected to the top of the turntable (8), a plurality of limit slide grooves (10) are slidably connected to the tops of slide rods (11), a plurality of slide rods (11) are fixedly connected to the tops of guide wheels (12) corresponding to the arc-shaped guide grooves (9), a plurality of slide rods (11) are fixedly connected to the tops of support rods (13), and a buffer mechanism (14) is arranged on the tops of the plurality of support rods (13).

2. A pressure-controllable machine tool fixture according to claim 1, characterized in that: The bottom of the concave frame (1) is provided with a plurality of installation positioning holes.

3. The pressure-controllable machine tool fixture according to claim 1, characterized in that: The worm wheel (4) is meshed with the worm (6).

4. The pressure-controllable machine tool fixture according to claim 1, characterized in that: A rocker is fixedly connected to the outer side of the rotating wheel (7).

5. The pressure-controllable machine tool fixture according to claim 1, characterized in that: The plurality of arc-shaped guide grooves (9) and the plurality of limit sliding grooves (10) are distributed in a circle with the center of the rotating disk (8) as the center.

6. The pressure-controllable machine tool fixture according to claim 1, characterized in that: The buffer mechanism (14) comprises a storage plate (1401) fixedly connected to the top of the support rod (13); a baffle (1402) is fixedly connected to the top of the storage plate (1401); two buffer sleeves (1403) are fixedly connected to the inner side of the baffle (1402); damping rods (1404) are installed on the inner walls of the two buffer sleeves (1403); springs (1405) are sleeved on the outer walls of the two damping rods (1404); and arc-shaped clamps (1406) are fixedly connected to the inner sides of the two damping rods (1404).

7. The pressure-controllable machine tool fixture according to claim 6, characterized in that: The spring (1405) is fixedly connected between the inner side of the buffer sleeve (1403) and the outer side of the arc-shaped clamp (1406).

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