Clamp replacing mechanism for numerical control machine tool

Abstract

The clamp replacing mechanism for the numerical control machine tool comprises a mounting base, a mounting plate is arranged on the top face of the mounting base, a clamping mechanism is fixedly connected to the top of the mounting plate, a first screw rod is connected to a middle bearing of the left side of the inner wall of the mounting base, and a through hole is formed in the middle of the right side of the mounting base; through mutual cooperation of all the components, the two connecting plates can move away from each other to be pulled out of the first inserting holes, fixing of the mounting plate is relieved, or the two connecting plates move in the opposite directions to be inserted into the first inserting holes to fix the mounting plate, and therefore the mounting plate can be conveniently mounted and dismounted, and the mounting efficiency is improved. And after the mounting plate is fixed, part of upward movement limitation of the connecting plate is transferred to the lower fixing block from the first screw rod and the second screw rod, upward movement limitation of the mounting plate is more stable, and the clamping mechanism is mounted on the mounting base more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of machine tool fixtures, in particular to a fixture replacement mechanism for a numerically controlled machine tool. Background Art

[0002] With the development of the economy, most of the products produced in factories are produced automatically by machines, without the need for manual production. When producing products in factories, machine tools are needed to process the parts. When processing parts, fixtures are needed to clamp the parts. After the fixtures have been used for a period of time, they need to be replaced.

[0003] Existing clamps are generally fixed by multiple screws. When replacing, not only tools such as wrenches or screwdrivers are needed, but also each screw needs to be unscrewed. The process is relatively complicated and inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide a fixture replacement mechanism for a CNC machine tool to solve the problems mentioned in the above background technology.

[0005] The technical solution of the utility model is a fixture replacement mechanism for a CNC machine tool, comprising a mounting seat, a mounting plate is provided on the top surface of the mounting seat, a clamping mechanism is fixedly connected to the top of the mounting plate, a first screw is connected to a middle bearing on the left side of an inner wall of the mounting seat, a through hole is provided in the middle of the right side of the mounting seat, a second screw is sleeved on the bearing in the through hole, a connecting frame is fixedly connected to the right side of the mounting seat surface, the right end of the second screw is sleeved in the connecting frame, a motor is fixedly connected to the right side of the inner wall of the connecting frame, and the motor of the motor The shaft is fixedly connected to the right end face of the second screw rod, and the left and right sides of the bottom surface of the mounting plate are fixedly connected with upper fixing blocks, and the upper fixing blocks are inserted into the mounting plate, and the two upper fixing blocks are each provided with a first plug hole, and the middle parts of the surfaces of the first screw rod and the second screw rod are both threadedly sleeved with a connecting plate, and the two connecting plates are fixedly connected with a first plug rod on the separated surfaces and near the top, and the two first plug rods are respectively inserted into the first plug holes on the left and right sides, and the front side of the mounting seat is fixedly connected with a controller, and the motor and the controller are electrically connected.

[0006] In one embodiment, the right end face of the first screw is fixedly connected to the first bevel gear, the left end face of the second screw is fixedly connected to the second bevel gear, the middle bearing on the rear side of the inner wall of the mounting seat is connected to the rotating shaft, the front end face of the rotating shaft is fixedly connected to the third bevel gear, and the first bevel gear and the second bevel gear are both meshed with the third bevel gear.

[0007] In one embodiment, lower fixing blocks are fixedly connected to the left and right sides of the bottom surface of the inner wall of the mounting seat, and second insertion holes are opened on the two lower fixing blocks. Second insertion rods are fixedly connected to the separated surfaces of the two connecting plates and near the bottom, and the two second insertion rods are respectively inserted into the second insertion holes on the left and right sides.

[0008] In one embodiment, slide grooves are provided on the left and right sides of the bottom surface of the mounting seat, and sliders are fixedly connected to the bottom surfaces of the two connecting plates, and the bottoms of the two sliders are slidably connected in the slide grooves on the left and right sides, respectively.

[0009] In one embodiment, positioning holes are provided at the four corners of the top surface of the mounting seat, positioning blocks are fixedly connected to the four corners of the mounting plate, and the four positioning blocks are respectively inserted into the four positioning holes.

[0010] In one embodiment, mounting blocks are fixedly connected to the left and right sides of the surface of the mounting seat near the bottom, and assembly holes are provided on the front and rear sides of each mounting block.

[0011] In one embodiment, the clamping mechanism includes a side plate and a fixed plate, and the side plate and the fixed plate are respectively fixedly connected to the left and right sides of the top surface of the mounting plate, an adjusting screw is threadedly sleeved on the middle part of the fixed plate, a clamping block is connected to the right end bearing of the adjusting screw, and the top and bottom of the fixed plate are movably sleeved with guide rods, and the right end surfaces of the two guide rods are respectively fixedly connected to the top and bottom of the left side of the clamping block.

[0012] The beneficial effects provided by the utility model are:

[0013] Through the cooperation between the various components, the two connecting plates can be moved away from each other and pulled out from the first plug hole to release the fixation of the mounting plate, or the two connecting plates can be moved toward each other and inserted into the first plug hole to fix the mounting plate, thereby facilitating the installation and disassembly of the mounting plate and the replacement of the clamping mechanism. After the mounting plate is fixed, part of the upward movement restriction of the connecting plate is transferred from the first screw and the second screw to the lower fixing block, so that the upward movement restriction of the mounting plate is more stable and the clamping mechanism is more stably installed on the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is the main cross-sectional view of the utility model;

[0016] Figure 3 is a top view of the mounting base;

[0017] Figure 4 It is a top sectional view of the mounting base and the connecting frame;

[0018] Figure 5 A side cross-sectional view of the mounting base.

[0019] In the accompanying drawings, 1, mounting seat; 2, mounting plate; 3, first screw; 4, second screw; 5, connecting frame; 6, motor; 7, upper fixed block; 8, first plug hole; 9, connecting plate; 10, first plug rod; 11, controller; 12, first bevel gear; 13, second bevel gear; 14, rotating shaft; 15, third bevel gear; 16, lower fixed block; 17, second plug hole; 18, second plug rod; 19, slide groove; 20, slider; 21, positioning plug hole; 22, positioning plug block; 23, mounting block; 24, assembly hole; 25, side panel; 26, fixing plate; 27, adjusting screw; 28, clamping block; 29, guide rod. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0021] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0022] In one embodiment, Figure 1-5As shown, a fixture replacement mechanism for a CNC machine tool comprises a mounting seat 1, a mounting plate 2 is provided on the top surface of the mounting seat 1, a clamping mechanism is fixedly connected to the top of the mounting plate 2, a first screw 3 is connected to the middle bearing on the left side of the inner wall of the mounting seat 1, a through hole is opened in the middle of the right side of the mounting seat 1, a second screw 4 is sleeved on the bearing in the through hole, a connecting frame 5 is fixedly connected to the right side of the surface of the mounting seat 1, the right end of the second screw 4 is sleeved in the connecting frame 5, a motor 6 is fixedly connected to the right side of the inner wall of the connecting frame 5, and the shaft of the motor 6 is connected to the right side of the second screw 4 The end faces are fixedly connected, and the left and right sides of the bottom surface of the mounting plate 2 are fixedly connected with upper fixing blocks 7, which are inserted into the inside of the mounting plate 2. A first plug hole 8 is opened on the two upper fixing blocks 7, and a connecting plate 9 is threadedly sleeved on the middle part of the surface of the first screw 3 and the second screw 4. The two connecting plates 9 are fixedly connected with first plug rods 10 on the separated surfaces and near the top, and the two first plug rods 10 are respectively inserted into the first plug holes 8 on the left and right sides. A controller 11 is fixedly connected to the front of the mounting base 1, and the motor 6 and the controller 11 are electrically connected.

[0023] In order to enable the first screw 3 and the second screw 4 to rotate in opposite directions, so that the two connecting plates 9 can move toward or away from each other, the right end face of the first screw 3 is fixedly connected to the first bevel gear 12, the left end face of the second screw 4 is fixedly connected to the second bevel gear 13, the middle bearing on the rear side of the inner wall of the mounting seat 1 is connected to the rotating shaft 14, the front end face of the rotating shaft 14 is fixedly connected to the third bevel gear 15, and the first bevel gear 12 and the second bevel gear 13 are both meshed with the third bevel gear 15.

[0024] In order to reduce the limiting pressure of the first screw 3 and the second screw 4 on the upward movement of the connecting plate 9 and make the first screw 3 and the second screw 4 more stable, lower fixing blocks 16 are fixedly connected to the left and right sides of the bottom surface of the inner wall of the mounting base 1, and second plug holes 17 are opened on the two lower fixing blocks 16. Second plug rods 18 are fixedly connected to the separated surfaces of the two connecting plates 9 and near the bottom, and the two second plug rods 18 are respectively inserted into the second plug holes 17 on the left and right sides.

[0025] In order to limit the connecting plate 9 so that the connecting plate 9 does not rotate with the first screw 3 and the second screw 4, sliding grooves 19 are opened on the left and right sides of the bottom surface of the mounting base 1, and the bottom surfaces of the two connecting plates 9 are fixedly connected with sliders 20, and the bottoms of the two sliders 20 are respectively slidably connected in the sliding grooves 19 on the left and right sides.

[0026] In order to facilitate the positioning of the mounting plate 2 so that the mounting plate 2 will not move in the front-to-back and left-to-right directions when placed on the mounting seat 1, the two first insertion rods 10 can be accurately inserted into the first insertion holes 8 on the two upper fixing blocks 7, positioning holes 21 are opened at the four corners of the top surface of the mounting seat 1, and positioning blocks 22 are fixedly connected to the four corners of the mounting plate 2, and the four positioning blocks 22 are respectively inserted into the four positioning holes 21.

[0027] In order to facilitate the installation of the device on the machine tool, mounting blocks 23 are fixedly connected to the left and right sides of the surface of the mounting seat 1 and near the bottom, and each mounting block 23 is provided with an assembly hole 24 on the front and rear sides.

[0028] In order to clamp the materials being processed on the machine tool, the clamping mechanism includes a side plate 25 and a fixed plate 26, which are respectively fixedly connected to the left and right sides of the top surface of the mounting plate 2, an adjusting screw 27 is threadedly sleeved on the middle part of the fixed plate 26, a clamping block 28 is connected to the right end bearing of the adjusting screw 27, and guide rods 29 are movably sleeved on the top and bottom of the fixed plate 26, and the right end faces of the two guide rods 29 are respectively fixedly connected to the top and bottom of the left side of the clamping block 28.

[0029] Working principle: When the utility model is used, the mounting base 1 can be installed on the machine tool by inserting the mounting bolt into the mounting hole 24. When the clamping mechanism is disassembled, the motor 6 is started by the controller 11, and the motor 6 drives the second screw 4 to rotate, the second screw 4 drives the second bevel gear 13 to rotate, the second bevel gear 13 drives the third bevel gear 15 to rotate, the third bevel gear 15 drives the first bevel gear 12 to rotate, and the first bevel gear 12 drives the first screw 3 to rotate. Since the first bevel gear 12 and the second bevel gear 13 rotate in opposite directions, the first screw 3 and the second screw 4 rotate. The directions of the first screw rod 3 and the second screw rod 4 are also opposite, and the first screw rod 3 and the second screw rod 4 rotate in opposite directions to make the two connecting plates 9 move toward each other, and the two connecting plates 9 move toward each other, so that the first plug rods 10 on the left and right sides are respectively moved out of the first plug holes 8 on the two upper fixing blocks 7, thereby releasing the fixation of the upper fixing blocks 7, and then the mounting plate 2 can be removed from the mounting seat 1, and the clamping mechanism can be dismantled. When installing the clamping mechanism, first set the mounting plate 2 at the bottom of the clamping mechanism downward, and align the four positioning plug blocks 22 at the bottom of the mounting plate 2 with the four positioning plug holes 21 at the top of the mounting seat 1 and insert them therein, completing the mounting. The initial installation of the mounting plate 2 makes it impossible for the mounting plate 2 to move in other directions on the mounting seat 1 except for moving upward, which is convenient for the subsequent locking of the mounting plate 2. Then, the controller 11 controls the motor 6 to reverse, and the motor 6 drives the second screw 4 to rotate, so that the second screw 4 and the two connecting plates 9 on the first screw 3 move away from each other, and the first plug rods 10 on the two connecting plates 9 are respectively inserted into the first plug holes 8 on the two upper fixing blocks 7, and the upper fixing blocks 7 are locked to limit the upward movement of the mounting plate 2, thereby completing the installation of the clamping mechanism. In the above manner, it is convenient to lock the mounting plate 2. The installation and disassembly make it easy to replace the clamping mechanism. The two connecting plates 9 move toward each other, and the two second plug rods 18 move toward each other, so that the two second plug rods 18 are respectively inserted into the second plug holes 17 on the two lower fixed blocks 16. The second plug rods 18 are inserted into the second plug holes 17 to restrict the connecting plate 9 so that the connecting plate 9 cannot move upward, thereby transferring part of the upward movement restriction of the connecting plate 9 from the first screw rod 3 and the second screw rod 4 to the lower fixed block 16, so that the upward movement restriction of the mounting plate 2 is more stable, and the clamping mechanism is more stably installed on the mounting seat 1.

[0030] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A fixture replacement mechanism for a CNC machine tool, characterized in that: The invention comprises a mounting seat, a mounting plate is provided on the top surface of the mounting seat, a clamping mechanism is fixedly connected to the top of the mounting plate, a first screw is connected to the middle bearing on the left side of the inner wall of the mounting seat, a through hole is provided in the middle part of the right side of the mounting seat, a second screw is sleeved in the bearing in the through hole, a connecting frame is fixedly connected to the right side of the surface of the mounting seat, the right end of the second screw is sleeved in the connecting frame, a motor is fixedly connected to the right side of the inner wall of the connecting frame, the shaft of the motor is fixedly connected to the right end face of the second screw, upper fixing blocks are fixedly connected to the left and right sides of the bottom surface of the mounting plate, the upper fixing blocks are plugged into the inside of the mounting plate, a first plug hole is provided on the two upper fixing blocks, a connecting plate is threadedly sleeved on the middle parts of the surfaces of the first screw and the second screw, first plug rods are fixedly connected to the separated surfaces of the two connecting plates and near the top, the two first plug rods are respectively inserted into the first plug holes on the left and right sides, a controller is fixedly connected to the front side of the mounting seat, and the motor and the controller are electrically connected.

2. A fixture replacement mechanism for a CNC machine tool as claimed in claim 1, characterized in that: The right end face of the first screw is fixedly connected to the first bevel gear, the left end face of the second screw is fixedly connected to the second bevel gear, the middle bearing on the rear side of the inner wall of the mounting seat is connected to the rotating shaft, the front end face of the rotating shaft is fixedly connected to the third bevel gear, and the first bevel gear and the second bevel gear are both meshed with the third bevel gear.

3. A fixture replacement mechanism for a CNC machine tool as claimed in claim 1, characterized in that: The left and right sides of the bottom surface of the inner wall of the mounting seat are fixedly connected with lower fixing blocks, and the two lower fixing blocks are provided with second plug holes. The separated surfaces of the two connecting plates and near the bottom are fixedly connected with second plug rods, and the two second plug rods are respectively inserted into the second plug holes on the left and right sides.

4. A fixture replacement mechanism for a CNC machine tool as claimed in claim 1, characterized in that: The left and right sides of the bottom surface of the mounting seat are provided with sliding grooves, the bottom surfaces of the two connecting plates are fixedly connected with sliding blocks, and the bottoms of the two sliding blocks are respectively slidably connected in the sliding grooves on the left and right sides.

5. A fixture replacement mechanism for a CNC machine tool as claimed in claim 1, characterized in that: Positioning holes are provided at the four corners of the top surface of the mounting seat, and positioning plugs are fixedly connected to the four corners of the mounting plate. The four positioning plugs are respectively plugged into the four positioning holes.

6. A fixture replacement mechanism for a CNC machine tool as claimed in claim 1, characterized in that: The left and right sides of the surface of the mounting seat and near the bottom are fixedly connected with mounting blocks, and the front and rear sides of each mounting block are provided with assembly holes.

7. A fixture replacement mechanism for a CNC machine tool as claimed in claim 1, characterized in that: The clamping mechanism includes a side plate and a fixed plate, and the side plate and the fixed plate are respectively fixedly connected to the left and right sides of the top surface of the mounting plate, an adjusting screw is threadedly sleeved on the middle part of the fixed plate, a clamping block is connected to the right end bearing of the adjusting screw, and guide rods are movably sleeved on the top and bottom of the fixed plate, and the right end surfaces of the two guide rods are respectively fixedly connected to the top and bottom of the left side of the clamping block.

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