Centrifugal force overcoming milling machine fixture with balanced structure

Abstract

The utility model relates to the field of machining, and discloses a structurally balanced centrifugal force overcoming milling machine fixture which comprises a milling machine body, a clamping mechanism is arranged on a main shaft of the milling machine body, the clamping mechanism comprises a mounting seat, a control groove is formed in the inner wall of the mounting seat, a slide way is formed in the right end of the mounting seat, and the control groove is communicated with the slide way. The inner walls, located on the two sides of the sliding way, of the mounting base are provided with reset grooves, the inner walls of the sliding way are slidably connected with sliding blocks, the right ends of the sliding blocks are fixedly connected with clamping blocks, the ends, close to the center of the mounting base, of the clamping blocks are fixedly connected with air bags, and the clamping mechanism further comprises a moving plate. According to the utility model, through the arrangement of the clamping mechanism, when the clamping block clamps a workpiece, the sliding block is limited by the control block and cannot move, so that the effect of preventing the control block from generating displacement due to centrifugal force when the control block rotates along with the main shaft of the milling machine body and causing clamping deviation of the workpiece is achieved.

Description

Technical Field

[0001] The utility model relates to the field of machining, in particular to a centripetal force overcoming milling fixture with a balanced structure. Background Technique

[0002] A milling fixture is a device specifically used in milling machining to clamp and position workpieces. It can stably fix the workpiece to ensure that the workpiece does not move or deform during the machining process, thereby guaranteeing the accuracy and efficiency of milling machining.

[0003] When machining cylindrical or spherical workpieces on a milling machine, it is often necessary to fix the workpiece on the workpiece spindle of the milling machine through a fixture. When the workpiece rotates, the cutting tool remains stationary, and the cutting effect is achieved through the relative movement between the workpiece and the cutting tool.

[0004] When existing cylindrical or spherical workpieces are being machined, due to the need to rotate at high speed along with the workpiece spindle of the milling machine, there is a centripetal force during the rotation process. Therefore, the workpiece may have a horizontal displacement under the action of the centripetal force, resulting in a deviation between the machined finished product and the expected shape. For this reason, a centripetal force overcoming milling fixture with a balanced structure is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a centripetal force overcoming milling fixture with a balanced structure, aiming to improve the problem that the workpiece may be displaced due to the action of the centripetal force in the prior art, resulting in a deviation in the shape of the finished product.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a centripetal force overcoming milling fixture with a balanced structure, including a milling machine body, a clamping mechanism is arranged on the spindle of the milling machine body, the clamping mechanism includes a mounting seat, a control groove is opened on the inner wall of the mounting seat, a slideway is opened at the right end of the mounting seat, reset grooves are opened on the inner walls of the mounting seat on both sides of the slideway, a slider is slidably connected to the inner wall of the slideway, a clamping block is fixedly connected to the right end of the slider, an airbag is fixedly connected to one end of the clamping block close to the center of the mounting seat, the clamping mechanism further includes a moving plate, the outer wall of the moving plate is slidably connected to the inner wall of the control groove, and the mounting seat and the moving plate are connected through an anti-movement component, and the anti-movement component includes a mounting bin, and the mounting bin is opened on the inner wall of the mounting seat outside the control groove.

[0007] As a further description of the above technical solution:

[0008] A slide plate is fixedly connected to the outer wall of the slider, the slide plate is inside the reset groove and is slidably connected to the inner wall of the reset groove, and one end of the slide plate close to the middle of the mounting seat is elastically connected to the inner wall of the reset groove through a first spring.

[0009] As a further description of the above technical solution:

[0010] The right end of the moving plate is fixedly connected with a control block. The inner wall of the moving plate is penetrated and threadedly connected with a threaded rod. A working chamber is provided in the inner wall of the mounting seat at the left end of the threaded rod, and the outer wall of the left end of the threaded rod penetrates and is rotatably connected with the inner wall of the mounting seat.

[0011] As a further description of the above technical solution:

[0012] The left end of the threaded rod is fixedly connected with a first bevel gear. The inner wall of the mounting seat is penetrated and rotatably connected with a rotating rod. A second bevel gear is fixedly connected to the end of the rotating rod close to the threaded rod. A starting block is fixedly connected to the end of the rotating rod away from the second bevel gear. A connecting groove is provided at the end of the starting block away from the rotating rod.

[0013] As a further description of the above technical solution:

[0014] A connecting ring is slidably connected to the inner wall of the installation chamber. A reset strip is fixedly connected to the left end of the connecting ring. A pushing block is slidably connected to the inner wall of the installation chamber. The anti-movement component further includes a storage groove, which is opened on the outer wall of the moving plate. A clamping block is slidably connected to the inner wall of the storage groove. One end of the clamping block close to the center of the moving plate is elastically connected to the inner wall of the storage groove through a second spring.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the mounting seat is cylindrical in shape, and the material of the mounting seat is a non-magnetic metal that is not easily attracted by a magnet.

[0017] As a further description of the above technical solution:

[0018] The cross-section of the slider is approximately trapezoidal in shape with a right angle, and one end of the left end of the slider close to the outer wall of the mounting seat is provided with an inclined surface. The cross-section of the control block is approximately trapezoidal in shape with a right angle, and the surface of the control block in contact with the slider is set as an inclined surface with an inclination angle that fits the inclined surface of the slider.

[0019] As a further description of the above technical solution:

[0020] One end of the pushing block close to the edge of the mounting seat is made of a magnet, and one end of the rectangular groove at the left end of the installation chamber close to the edge of the mounting seat is also made of a magnet. Moreover, the magnetic pole of one end of the pushing block close to the edge of the mounting seat is different from the magnetic pole of the magnet on the side close to the pushing block inside the installation chamber.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present utility model, through the arrangement of the clamping mechanism, during the process of clamping the workpiece by the clamping block, the slider cannot move due to the limitation of the control block, thereby preventing the control block from shifting due to centrifugal force during the rotation of the spindle of the milling machine body, resulting in deviation in the clamping of the workpiece.

[0023] 2. In the present utility model, through the arrangement of the anti-movement component, after the moving plate moves along with the rotation of the threaded rod, it cannot move in the opposite direction when the clamping block is not squeezed, thereby preventing the threaded rod from rotating during the rotation of the workpiece and affecting the limiting effect of the moving plate and the control block on the clamping block. Brief Description of the Drawings

[0024] Figure 1 is a three-dimensional structural schematic diagram of the overall structure in the present utility model;

[0025] Figure 2 is a three-dimensional structural schematic diagram of the clamping mechanism in the present utility model;

[0026] Figure 3 is a sectional three-dimensional structural schematic diagram of the clamping mechanism in the present utility model;

[0027] Figure 4 In the present utility model Figure 3 is an enlarged three-dimensional structural schematic diagram of part A;

[0028] Figure 5 In the present utility model Figure 3 is an enlarged three-dimensional structural schematic diagram of part B;

[0029] Figure 6 is a sectional and disassembled three-dimensional structural schematic diagram of the clamping mechanism in the present utility model;

[0030] Figure 7 is a sectional three-dimensional structural schematic diagram of the clamping mechanism in the present utility model.

[0031] Legend Explanation:

[0032] 1. Milling machine body; 2. Clamping mechanism; 3. Anti-movement component; 21. Mounting seat; 22. Control groove; 23. Slideway; 24. Reset groove; 25. Slider; 26. Clamping block; 27. Airbag; 28. Slide plate; 29. First spring; 210. Moving plate; 211. Control block; 212. Threaded rod; 213. First bevel gear; 214. Rotating rod; 215. Second bevel gear; 216. Starting block; 217. Connecting groove; 218. Working chamber; 31. Installation chamber; 32. Connecting ring; 33. Reset strip; 34. Pushing block; 35. Storage groove; 36. Clamping block; 37. Second spring. Detailed Embodiment

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Referring to Figure 1 - Figure 3 , an embodiment provided by the present invention: a centrifugal force overcoming milling machine fixture with a balanced structure, including a milling machine body 1. A clamping mechanism 2 is arranged on the main shaft of the milling machine body 1. The main shaft of the milling machine body 1 can rotate, and this technology is the prior art and can be realized by those skilled in the art, so it will not be described in detail in this case. The clamping mechanism 2 includes a mounting seat 21. The outer wall of the mounting seat 21 is cylindrical in shape. The material of the mounting seat 21 is a non-magnetic metal that is not easily attracted by a magnet. Through the shape setting of the mounting seat 21, it is ensured that when the mounting seat 21 rotates with the main shaft of the milling machine body 1, the resistance received by the outer wall is small, so as to ensure that the centrifugal force generated when the mounting seat 21 rotates with the main shaft of the milling machine body 1 is small. A control groove 22 is opened on the inner wall of the mounting seat 21, and a slideway 23 is opened at the right end of the mounting seat 21. The number of the slideways 23 is set to be several, and the slideways 23 are arranged in a circumferential array around the center point of the mounting seat 21.

[0035] Referring to Figure 2 、 Figure 6 And Figure 7, reset grooves 24 are provided on the inner walls on both sides of the slideway 23 of the mounting seat 21. The depth of the reset grooves 24 in the left-right direction is shallower than the depth of the slideway 23. A slider 25 is slidably connected to the inner wall of the slideway 23. The cross-sectional shape of the slider 25 is approximately a right trapezoid, and an inclined surface is provided at one end of the left end of the slider 25 close to the outer wall of the mounting seat 21. A clamping block 26 is fixedly connected to the right end of the slider 25. The clamping block 26 is made of metal. Through the material setting of the clamping block 26, it is ensured that the clamping block 26 can better fix the workpiece and will not deform due to force during the fixing process. A gasbag 27 is fixedly connected to one end of the clamping block 26 close to the center of the mounting seat 21. The gasbag 27 is made of rubber, and the inside of the gasbag 27 is filled with gas. Through the material of the gasbag 27 and the setting of the internal gas, it is ensured that the clamping block 26 can better fit the surface of the workpiece during the process of fixing the workpiece and is not easy to clamp the workpiece damaged. A slide plate 28 is fixedly connected to the outer wall of the slider 25. The slide plate 28 is inside the reset groove 24 and is slidably connected to the inner wall of the reset groove 24. One end of the slide plate 28 close to the middle of the mounting seat 21 is elastically connected to the inner wall of the reset groove 24 through a first spring 29. One end of the first spring 29 is fixedly connected to one end of the slide plate 28 close to the middle of the mounting seat 21, and the other end of the first spring 29 is fixedly connected to the inner wall of the reset groove 24.

[0036] Refer to Figure 3 , Figure 6 And Figure 7 , the clamping mechanism 2 further includes a moving plate 210. The outer wall of the moving plate 210 is slidably connected to the inner wall of the control groove 22. The shape of the moving plate 210 is approximately a cylinder, and the size of the outer wall of the moving plate 210 fits the size of the inner wall of the control groove 22. A control block 211 is fixedly connected to the right end of the moving plate 210. The cross-sectional shape of the control block 211 is approximately a right trapezoid, and the surface of the control block 211 in contact with the slider 25 is provided with an inclined surface whose inclination angle fits the inclined surface of the slider 25. Through the shape setting of the control block 211 and the slider 25, it is ensured that after a force is generated to the right on the control block 211, the slider 25 can be moved in the direction close to the middle of the mounting seat 21. A threaded rod 212 passes through and is threadedly connected to the inner wall of the moving plate 210.

[0037] Refer to Figure Figure 3 , Figure 4 And Figure 6, a working chamber 218 is provided in the inner wall of the mounting base 21 at the left end of the threaded rod 212. The outer wall of the left end of the threaded rod 212 penetrates and is rotatably connected to the inner wall of the mounting base 21. A first bevel gear 213 is fixedly connected to the left end of the threaded rod 212. A rotating rod 214 penetrates and is rotatably connected to the inner wall of the mounting base 21. A second bevel gear 215 is fixedly connected to one end of the rotating rod 214 close to the threaded rod 212. The first bevel gear 213 meshes with the second bevel gear 215. A starting block 216 is fixedly connected to the end of the rotating rod 214 away from the second bevel gear 215. The starting block 216 is located inside the mounting base 21, and there is a large frictional force between the outer wall of the starting block 216 and the inner wall of the mounting base 21. Through the setting of the frictional force, it is ensured that the starting block 216 is difficult to rotate when not subjected to external forces. A connecting groove 217 is provided at the end of the starting block 216 away from the rotating rod 214. Through the setting of the connecting groove 217, it is ensured that the staff can make the starting block 216 rotate with the cooperation of a fitting by inserting a fitting that fits the shape of the connecting groove 217.

[0038] Refer to Figure 3 , Figure 5 and Figure 6 , the mounting base 21 and the moving plate 210 are connected by an anti-movement component 3. The anti-movement component 3 includes a mounting chamber 31, which is formed by connecting a circular groove at the right end and a rectangular groove at the left end. And a plurality of partitions with small spacing are provided in the middle of the rectangular groove at the left end of the mounting chamber 31. The mounting chamber 31 is provided in the inner wall of the mounting base 21 outside the control groove 22. A connecting ring 32 is slidably connected to the inner wall of the mounting chamber 31. The shape of the connecting ring 32 is circular, and the shape of the connecting ring 32 fits the size of the circular groove at the right end of the mounting chamber 31. A reset strip 33 is fixedly connected to the left end of the connecting ring 32. A push block 34 is slidably connected to the inner wall of the mounting chamber 31. The material of the end of the push block 34 close to the edge of the mounting base 21 is set as a magnet. The material of the end of the rectangular groove at the left end of the mounting chamber 31 close to the edge of the mounting base 21 is also set as a magnet, and the magnetic pole of the end of the push block 34 close to the edge of the mounting base 21 is different from the magnetic pole of the magnet on the side close to the push block 34 inside the mounting chamber 31. The anti-movement component 3 further includes a storage groove 35, which is provided on the outer wall of the moving plate 210. A clamping block 36 is slidably connected to the inner wall of the storage groove 35. The cross-sectional shape of the clamping block 36 is approximately a rectangle with a triangle cut off. One end of the clamping block 36 close to the center of the moving plate 210 is elastically connected to the inner wall of the storage groove 35 through a second spring 37. One end of the second spring 37 is fixedly connected to the end of the clamping block 36 close to the moving plate 210, and the other end of the second spring 37 is fixedly connected to the inner wall of the storage groove 35.

[0039] Working principle: During use, the operator first places the workpiece in the middle of the clamping block 26. Subsequently, the operator inserts an object whose shape fits that of the connecting groove 217 into the connecting groove 217 and rotates the object, causing the object to drive the starting block 216 to rotate. Thereby, the starting block 216 drives the rotating rod 214 to rotate, causing the bevel gear II 215 to rotate. The bevel gear II 215 drives the bevel gear I 213 to rotate, causing the threaded rod 212 to rotate. Thereby, the threaded rod 212 drives the moving plate 210 to slide towards the right end.

[0040] During the process of the moving plate 210 sliding towards the right end, the moving plate 210 drives the control block 211 to move to the right, causing the control block 211 to push the inclined surface of the slider 25 through the inclined surface, causing the slider 25 to move towards one end close to the middle of the mounting seat 21, causing the clamping block 26 to move towards one side close to the middle of the mounting seat 21. When the clamping block 26 is almost close to the surface of the workpiece, the airbag 27 is in close contact with the surface of the workpiece and deforms, achieving the fixation of the workpiece and ensuring that the surface of the workpiece is not easily deformed due to extrusion.

[0041] At the same time, when the moving plate 210 moves to the right, the inclined surface of the clamping block 36 can be squeezed by the baffle in the rectangular area of the installation bin 31 as the moving plate 210 moves, and thus enters the storage groove 35. When the position of the moving plate 210 is fixed, the clamping block 36 moves towards the direction of entering the interior of the installation bin 31 under the elastic force of the spring II 37. Since the horizontal plane of the clamping block 36 will contact the baffle in the rectangular area of the installation bin 31 when moving towards the left end, the clamping block 36 cannot move in the reverse direction, thus achieving the effect of further preventing the equipment from displacing due to centrifugal force.

[0042] When the workpiece needs to be taken out after processing, the operator first presses the connecting ring 32 through the hole at the right end of the mounting seat 21, causing the connecting ring 32 to drive the reset strip 33 to move towards the left end, causing the reset strip 33 to push the push block 34, causing the push block 34 to push out the clamping block 36. At this time, the operator then rotates the starting block 216 in the reverse direction to release the limit on the clamping block 26. When the limit on the clamping block 26 is released, the sliding plate 28 moves away from the workpiece under the drive of the spring I 29, causing the clamping block 26 to move away from the workpiece, enabling the operator to smoothly take out the workpiece.

[0043] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A structurally balanced centrifugal force overcoming milling machine fixture, comprising a milling machine body (1), characterized in that: A clamping mechanism (2) is arranged on the spindle of the milling machine body (1), and the clamping mechanism (2) comprises a mounting seat (21), the inner wall of the mounting seat (21) is provided with a control groove (22), the right end of the mounting seat (21) is provided with a slideway (23), the inner wall of the mounting seat (21) on both sides of the slideway (23) is provided with a reset groove (24), the inner wall of the slideway (23) is slidably connected with a slider (25), the right end of the slider (25) is fixedly connected with a clamping block (26), and the An end of the clamping block (26) close to the center of the mounting seat (21) is fixedly connected to an airbag (27); the clamping mechanism (2) further comprises a movable plate (210); an outer wall of the movable plate (210) is slidably connected to an inner wall of the control groove (22); the mounting seat (21) and the movable plate (210) are connected via an anti-movement component (3); the anti-movement component (3) comprises an installation bin (31); and the installation bin (31) is provided on an inner wall of the mounting seat (21) outside the control groove (22).

2. A structurally balanced centrifugal force overcoming milling machine fixture according to claim 1, characterized in that: The outer wall of the slider (25) is fixedly connected with a slide plate (28), the slide plate (28) is located inside the reset groove (24) and is slidably connected to the inner wall of the reset groove (24), and one end of the slide plate (28) close to the middle of the mounting seat (21) is elastically connected to the inner wall of the reset groove (24) via a spring (29).

3. A structurally balanced centrifugal force overcoming milling machine fixture according to claim 1, characterized in that: The right end of the movable plate (210) is fixedly connected to a control block (211); a threaded rod (212) is passed through and threadedly connected to the inner wall of the movable plate (210); a working chamber (218) is provided on the inner wall of the mounting seat (21) at the left end of the threaded rod (212); and the outer wall of the left end of the threaded rod (212) is passed through and rotatably connected to the inner wall of the mounting seat (21).

4. A structurally balanced centrifugal force overcoming milling machine fixture according to claim 3, characterized in that: The left end of the threaded rod (212) is fixedly connected to a bevel gear 1 (213); a rotating rod (214) penetrates through the inner wall of the mounting seat (21) and is rotatably connected thereto; an end of the rotating rod (214) close to the threaded rod (212) is fixedly connected to a bevel gear 2 (215); an end of the rotating rod (214) away from the bevel gear 2 (215) is fixedly connected to a starting block (216); and an end of the starting block (216) away from the rotating rod (214) is provided with a connecting groove (217).

5. The structurally balanced centrifugal force overcoming milling machine fixture according to claim 1, characterized in that: The inner wall of the installation bin (31) is slidably connected to a connecting ring (32), the left end of the connecting ring (32) is fixedly connected to a reset bar (33), the inner wall of the installation bin (31) is slidably connected to a push block (34), the anti-movement component (3) further comprises a storage groove (35), the storage groove (35) is arranged on the outer wall of the movable plate (210), the inner wall of the storage groove (35) is slidably connected to a clamping block (36), and one end of the clamping block (36) close to the center of the movable plate (210) is elastically connected to the inner wall of the storage groove (35) via a second spring (37).

6. The structurally balanced centrifugal force overcoming milling machine fixture according to claim 1, characterized in that: The outer wall shape of the mounting seat (21) is cylindrical, and the material of the mounting seat (21) is a non-magnetic metal that is not easily attracted by a magnet.

7. A structurally balanced centrifugal force overcoming milling machine fixture according to claim 3, characterized in that: The cross-sectional shape of the slider (25) is approximately a right-angled trapezoid, and an inclined surface is provided at one end of the left end of the slider (25) close to the outer wall of the mounting seat (21). The cross-sectional shape of the control block (211) is approximately a right-angled trapezoid, and the surface of the control block (211) that is released from the slider (25) is provided as an inclined surface whose inclination angle matches the inclined surface of the slider (25).

8. The structurally balanced centrifugal force overcoming milling machine fixture according to claim 5, characterized in that: The material of one end of the push block (34) close to the edge of the mounting seat (21) is set to be a magnet, and the material of one end of the rectangular groove at the left end of the mounting chamber (31) close to the edge of the mounting seat (21) is also set to be a magnet, and the magnetic pole of one end of the push block (34) close to the edge of the mounting seat (21) is different from the magnetic pole of the magnet inside the mounting chamber (31) close to the push block (34) side.

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