Fixing device for machining of mechanical parts

Abstract

The utility model belongs to the technical field of machine part machining, and particularly relates to a fixing device for machine part machining, which comprises a supporting plate, a through hole is formed in the upper surface of the supporting plate, a driving mechanism staggered with the through hole is further arranged on the upper surface of the supporting plate, and a plurality of hinge shafts are distributed on the upper edge of the through hole in a circumferential array mode. The hinge shafts are parallel to the central axis of the through hole, a plurality of clamping rods are distributed above the through hole along a circumferential array, each clamping rod is of a structure with a tubular middle part and two platy ends, and the tubular middle parts of the clamping rods are arranged on the outer sides of the corresponding hinge shafts in a sleeving manner; the driving mechanism comprises a gear ring installed on the upper surface of the supporting plate, a driving element is arranged on the outer side of the gear ring, the central axis of the gear ring coincides with the central axis of the through hole, and a plurality of arc-shaped plates are distributed on the inner side of the gear ring in a circumferential array mode. Compared with a traditional clamp, the clamp can clamp the circular part in a petal shape, the position of the circular part does not need to be confirmed many times, and one-time in-place clamping is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical parts processing, and specifically relates to a fixing device for mechanical parts processing. Background Technology

[0002] Circular parts are necessary components of mechanical products. They are generally made of alloy plates or bars through cutting, grinding, drilling and spray coating. Especially during the spray coating process, the parts are subjected to a large impact of the paint flow and need to be clamped and supported by a fixture.

[0003] After patent search, the existing Chinese utility model with announcement number CN218194780U is a fixture for processing circular parts, including a fixture plate, a first clamping block, a clamping block, a second clamping block, a first bidirectional threaded screw and a second bidirectional threaded screw. The circular part can be placed on the fixture plate, and the two second clamping blocks are first moved close to the circular part to adjust the position of the circular part, and then the two first clamping blocks are moved for positioning and clamping, so that the circular part has a good clamping effect, effectively preventing it from falling off during the processing process, and can be positioned and clamped, thereby improving the processing accuracy of the part.

[0004] When the above patent clamps the circular hardware parts, the first clamp block and the second clamp block are used to position and clamp them respectively, and the first bidirectional threaded screw and the second bidirectional threaded screw need to be manually operated respectively, and the position of the hardware parts needs to be confirmed multiple times, which makes it inconvenient to clamp them in place at one time. For this reason, we propose a fixing device for machining mechanical parts. Contents of utility model

[0005] The purpose of this utility model is to provide a fixture for machining mechanical parts, which can clamp circular parts in a petal shape compared to traditional clamps, and does not require multiple confirmations of the position of circular parts, which is conducive to one-time clamping in place.

[0006] The specific technical solutions adopted in this utility are as follows:

[0007] A fixing device for machining mechanical parts, comprising a support plate, a through hole is formed on the upper surface of the support plate, a driving mechanism staggered with the through hole is also provided on the upper surface of the support plate, a plurality of hinge shafts are distributed along a circumferential array on the upper edge of the through hole, the hinge shafts are all parallel to the central axis of the through hole, a plurality of clamping rods are also distributed along a circumferential array above the through hole, the clamping rods are all tubular in the middle and plate-shaped at both ends, and the tubular middle part of the clamping rod is sleeved on the outer side of the corresponding hinge shaft;

[0008] The driving mechanism includes a gear ring installed on the upper surface of the support plate, a driving element is arranged on the outer side of the gear ring, the central axis of the gear ring coincides with the central axis of the through hole, and a plurality of arc plates are distributed along the circumferential array on the inner side of the gear ring, one end of the clamping rod has an arc and is inserted into the space between one end of two adjacent arc plates, the driving element is started, the gear ring rotates forward, so that the other end of the clamping rod swings around the corresponding hinge axis at a certain angle and away from the center of the through hole, the distance between the clamping rods is opened, and the circular part can be placed, and then the gear ring is reversed, and the other end of the clamping rod is close to the center of the through hole until it is pressed against the outer side of the circular part. Compared with the traditional clamp, the circular part can be clamped in a petal shape, and there is no need to confirm the position of the circular part many times, which is conducive to one-time clamping in place.

[0009] The driving element includes a driving gear connected to the outer teeth of the gear ring. The driving gear is installed with a gearbox fixedly connected to the upper surface of the support plate on the side away from the gear ring. The gearbox provides power to the gearbox to drive the driving gear to rotate the gear ring. The gear ratio of the gear ring, the driving gear and the gearbox can be used to reduce speed and reduce the speed at which the clamping rod approaches the circular part, which is convenient for buffering.

[0010] A coaxial circular slide rail is rotatably mounted on the lower surface of the driving gear. The lower surface of the circular slide rail is welded to the upper surface of the support plate. When the driving gear rotates, it can slide along the upper surface of the circular slide rail. The circular slide rail supports the driving gear in the horizontal direction to reduce the degree of vibration of the driving gear caused by load.

[0011] A brake motor is fixedly installed on the outside of the gearbox, and the output end of the brake motor extends into the gearbox and is used to drive the driving gear. The brake motor can be used and stopped at any time, which is convenient for adjusting the degree of opening or closing of the clamp.

[0012] The end of the clamping rod away from the gear ring is equipped with a grinding head. The clamping rod drives the corresponding grinding head to press against the circular part, which can increase the friction between the clamping rod and the circular part, which is beneficial to improve the stability of the clamp holding the circular part.

[0013] The inner side of the arc plate is bonded with a ceramic plate. When the arc plate moves the corresponding clamping rod, it drives the ceramic plate to stick to one end of the corresponding clamping rod, which can enhance the contact surface between the arc plate and one end of the corresponding clamping rod and extend the service life of the clamp.

[0014] The technical effects achieved by this utility model are:

[0015] The utility model discloses a fixing device for machining mechanical parts. The driving element is started, the gear ring is rotated forwardly, and the arc plate inside the gear ring moves one end of the clamping rod forwardly, so that the other end of the clamping rod swings around the corresponding hinge axis at a certain angle and away from the center of the through hole. The distance between the clamping rods is opened, and the circular part can be placed. Then the gear ring is reversed, and the arc plate is used to reversely move one end of the clamping rod, and the other end of the clamping rod is close to the center of the through hole until both ends are pressed against the outside of the circular part. Compared with the traditional clamp, the circular part can be clamped in a petal shape, and there is no need to confirm the position of the circular part multiple times, which is conducive to one-time clamping in place.

[0016] This practical fixture for machining mechanical parts provides power to the gearbox, drives the driving gear, and rotates the gear ring. It can use the gear ratio of the gear ring, the driving gear, and the gearbox to reduce speed and reduce the speed at which the clamping rod approaches the circular part, making it convenient for buffering. Brief Description of the Figures

[0017] Figure 1 is a schematic diagram of an embodiment of the main view of the present invention;

[0018] Figure 2 This is a practical Figure 1 Schematic diagram of an enlarged embodiment at A in the middle;

[0019] Figure 3 is a schematic diagram of a front view of the clamping rod of the present invention;

[0020] Figure 4 This is a bottom view schematic diagram of the driving gear of the present invention.

[0021] In the attached drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Support plate; 2. Through hole; 3. Articulated shaft; 4. Clamping rod; 5. Gear ring; 6. Arc plate; 7. Driving gear; 8. Gearbox; 9. Circular slide rail; 10. Brake motor; 11. Sanding head; 12. Ceramic plate. Specific implementation method

[0023] In order to make the purpose and advantages of this utility more clear, the utility is specifically described in combination with the following examples. It should be understood that the following text is only used to describe one or several specific implementation methods of this utility, and does not strictly limit the scope of protection specifically requested by this utility.

[0024] If Figures 1-4As shown, a fixing device for machining mechanical parts comprises a support plate 1, a through hole 2 is formed on the upper surface of the support plate 1, a driving mechanism staggered with the through hole 2 is also arranged on the upper surface of the support plate 1, a plurality of hinge shafts 3 are distributed along a circumferential array on the upper edge of the through hole 2, one end of the hinge shaft 3 is vertically welded to the upper edge of the through hole 2, the hinge shafts 3 are parallel to the central axis of the through hole 2, a plurality of clamping rods 4 are distributed along a circumferential array above the through hole 2, the clamping rods 4 are all tubular in the middle and plate-shaped at both ends, the tubular middle parts of the clamping rods 4 are all arranged on the outer side of the corresponding hinge shaft 3 through bearing sleeves; the driving mechanism comprises a gear ring 5 mounted on the upper surface of the support plate 1, the middle of the lower surface of the gear ring 5 is rotatably connected to the upper surface of the support plate 1 through a rotating shaft, a driving element is arranged on the outer side of the gear ring 5, the central axis of the gear ring 5 coincides with the central axis of the through hole 2, There are multiple arc plates 6 distributed along the circumference of the inner side. One end of the clamping rod 4 is curved and inserted into the space between one end of two adjacent arc plates 6. The other end of the arc plate 6 is integrated and connected to the inner side of the gear ring 5. Take the hardware parts first. When processing the parts, start the driving element and rotate the gear ring 5 forward. The arc plate 6 on the inner side of the gear ring 5 pushes one end of the clamping rod 4 forward, so that the other end of the clamping rod 4 swings around the corresponding hinge shaft 3 at a certain angle and away from the center of the through hole 2. The distance between the clamping rods 4 is opened, and the circular parts can be placed. Then reverse the gear ring 5, and use the arc plate 6 to push one end of the clamping rod 4 in the opposite direction. The other end of the clamping rod 4 is close to the center of the through hole 2 until it is close to the outside of the circular part. Compared with the traditional clamp, it can clamp the circular part in a petal shape, without confirming the position of the circular part many times, which is conducive to one-time clamping in place.

[0025] If Figure 1 and Figure 4 As shown in FIG. 1 , the driving element includes a driving gear 7 connected to the outer teeth of the gear ring 5. The outer teeth of the driving gear 7 mesh with the outer teeth of the gear ring 5. The driving gear 7 is installed with a gearbox 8 fixedly connected to the upper surface of the support plate 1 on the side away from the gear ring 5. The gearbox 8 provides power to drive the driving gear 7, which drives the gear ring 5 to rotate. The gear ratio of the gear ring 5, the driving gear 7 and the gearbox 8 can be used to reduce speed and reduce the speed at which the clamping rod 4 approaches the circular part, which is convenient for buffering.

[0026] If Figure 1 and Figure 4 As shown in FIG. 1 , a coaxial circular slide rail 9 is rotatably mounted on the lower surface of the driving gear 7, and the upper surface of the circular slide rail 9 is slidably connected to the lower surface of the driving gear 7. The lower surface of the circular slide rail 9 is welded to the upper surface of the support plate 1. When the driving gear 7 rotates, it can slide along the upper surface of the circular slide rail 9. The circular slide rail 9 supports the driving gear 7 in the horizontal direction to reduce the degree of vibration of the driving gear 7 caused by the load.

[0027] If Figure 1 and Figure 4 ​​​​As shown, a brake motor 10 is fixedly installed on the outside of the transmission 8. The outside of the brake motor 10 is fixedly connected to the outside of the transmission 8 by bolts. The output end of the brake motor 10 extends into the interior of the transmission 8 and is used to drive the driving gear 7. The brake motor 10 is controlled by a controller. This technical solution is an existing technology and is not shown in the figure. The brake motor 10 can be started and stopped as needed, which is convenient for adjusting the degree of opening or closing of the fixture.

[0028] As Figure 1 and Figure 3 shown, grinding heads 11 are assembled at one end of the clamping rods 4 away from the gear ring 5. One side of the grinding head 11 is cast at one end of the clamping rod 4. The clamping rod 4 drives the corresponding grinding head 11 to press against the circular part, which can increase the friction between the clamping rod 4 and the circular part and is beneficial to improving the stability of the fixture for clamping the circular part.

[0029] As Figure 1 and Figure 2 shown, ceramic plates 12 are bonded to the inner sides of the arc-shaped plates 6. One side of the ceramic plate 12 is bonded to the inner side of the arc-shaped plate 6. When the arc-shaped plate 6 toggles the corresponding clamping rod 4, it drives the ceramic plate 12 to stick to one end of the corresponding clamping rod 4, which can enhance the contact surface between the arc-shaped plate 6 and one end of the corresponding clamping rod 4 and extend the service life of the fixture.

[0030] The working principle of this utility model is as follows: When machining a part, start the driving element to provide power for the transmission 8, drive the driving gear 7, and drive the gear ring 5 to rotate. The arc-shaped plate 6 on the inner side of the gear ring 5 positively toggles one end of the clamping rod 4, so that the other end of the clamping rod 4 swings around the corresponding hinge shaft 3 by a certain angle and moves away from the center of the through hole 2. The distance between the clamping rods 4 is opened, and a circular part can be placed. Then reverse the gear ring 5, and use the arc-shaped plate 6 to reversely toggle one end of the clamping rod 4. The other ends of the clamping rods 4 all approach the center of the through hole 2 until they all press against the outer side of the circular part. Compared with traditional fixtures, it can clamp the circular part in a petal shape, and there is no need to confirm the position of the circular part multiple times, which is beneficial to one-time clamping in place.

[0031] At the same time, use the tooth number ratio of the gear ring 5, the driving gear 7 and the transmission 8 to reduce the speed and lower the rate at which the clamping rod 4 approaches the circular part, which is convenient for buffering.

[0032] The above is only the preferred implementation mode of this utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of this utility model, several improvements and retouches can be made, and these improvements and retouches should also be regarded as the protection scope of this utility model. The structures, devices and operation methods not specifically described and explained in this utility model, without special instructions and limitations, are implemented according to the conventional means in this field.

Claims

1. A fixing device for machining mechanical parts, comprising a support plate (1), characterized in that: The upper surface of the support plate (1) is provided with a through hole (2), and the upper surface of the support plate (1) is also provided with a driving mechanism staggered with the through hole (2); a plurality of hinge shafts (3) are distributed along a circumferential array on the upper edge of the through hole (2); the hinge shafts (3) are all parallel to the central axis of the through hole (2); a plurality of clamping rods (4) are also distributed along a circumferential array above the through hole (2); the clamping rods (4) are all tubular in the middle and plate-shaped at both ends; the tubular middle portion of the clamping rod (4) is sleeved on the outer side of the corresponding hinge shaft (3); The driving mechanism comprises a gear ring (5) mounted on the upper surface of the support plate (1), a driving element is arranged on the outer side of the gear ring (5), the central axis of the gear ring (5) coincides with the central axis of the through hole (2), a plurality of arc-shaped plates (6) are distributed in a circumferential array on the inner side of the gear ring (5), and one end of the clamping rod (4) is curved and is inserted into the space between one end of two adjacent arc-shaped plates (6).

2. A fixing device for machining mechanical parts according to claim 1, characterized in that: The driving element comprises a driving gear (7) whose teeth are connected to the outer teeth of the gear ring (5); a gearbox (8) fixedly connected to the upper surface of the support plate (1) is transmission-mounted on the side of the driving gear (7) away from the gear ring (5).

3. A fixing device for machining mechanical parts according to claim 2, characterized in that: A coaxial circular slide rail (9) is rotatably mounted on the lower surface of the driving gear (7), and the lower surface of the circular slide rail (9) is welded to the upper surface of the support plate (1).

4. A fixing device for machining mechanical parts according to claim 2, characterized in that: A brake motor (10) is fixedly mounted on the outer side of the gearbox (8), and the output end of the brake motor (10) extends into the gearbox (8) and is used to drive the driving gear (7).

5. A fixing device for machining mechanical parts according to claim 1, characterized in that: The end of the clamping rod (4) away from the gear ring (5) is equipped with a grinding head (11).

6. A fixing device for machining mechanical parts according to claim 1, characterized in that: A ceramic plate (12) is bonded to the inner side of each of the arc-shaped plates (6).

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