Damping mechanism of numerical control gear hobbing machine

Abstract

The utility model relates to the technical field of numerically-controlled gear hobbing machines, in particular to a damping mechanism of a numerically-controlled gear hobbing machine, which comprises a numerically-controlled gear hobbing machine body and a base, cavities are arranged at four corners inside the base, side cavity walls of the cavities are round, round holes are arranged in the middles of the upper ends of the cavities, movable discs are arranged in the cavities in a sliding manner, and supporting rods are arranged in the middles of the round holes. The lower ends of the supporting rods extend to the bottom of the cavity and are fixedly connected with the middle of the upper end of the movable disc, a plurality of first springs are fixedly arranged on the circumferential wall of the movable disc, the other ends of the first springs are fixedly connected with the cavity wall of the cavity, and sliding grooves matched with the supporting rods are formed in the four corners of the bottom of the numerical control gear hobbing machine body correspondingly. The upper side rod wall of the supporting rod is in sliding connection with the groove wall of the sliding groove. According to the numerical control gear hobbing machine, vibration generated during machining of the numerical control gear hobbing machine body can be effectively and comprehensively damped, the damping effect is good, and the service life of the numerical control gear hobbing machine body is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of numerically controlled gear hobbing machines, in particular to a shock absorbing mechanism for numerically controlled gear hobbing machines. Background Art

[0002] Gear hobbing machine is the most widely used type of gear processing machine tool. It can cut spur and helical cylindrical gears, and can also process worm wheels, sprockets, etc. It uses hobs to process spur, helical and herringbone cylindrical gears and worm wheels according to the development method. This type of machine tool can also process workpieces with various special tooth shapes such as splines and sprockets when using special hobs.

[0003] During the machining process of the existing gear hobbing machine, friction cutting will cause small vibrations between the workpiece being machined and the clamping mechanism. These vibrations will reduce the service life of the CNC gear hobbing machine body. Therefore, we propose a shock absorbing device for CNC high-speed gear hobbing machines. Utility Model Content

[0004] The purpose of the utility model is to provide a shock absorbing mechanism for a CNC gear hobbing machine, which can effectively perform all-round shock absorption on the vibration generated during the processing of the CNC gear hobbing machine body, has good shock absorption effect, and increases the service life of the CNC gear hobbing machine body, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A shock absorbing mechanism for a CNC gear hobbing machine comprises a CNC gear hobbing machine body and a base, wherein cavities are provided at the four inner corners of the base, the side cavity walls of the cavity are set to be circular, a circular hole is opened in the middle of the upper end of the cavity, a movable disk is slidably arranged in the cavity, a support rod is provided in the middle of the circular hole, the lower end of the support rod extends to the bottom of the cavity and is fixedly connected to the upper end middle of the movable disk, a plurality of first springs are fixedly provided on the circumferential wall of the movable disk, the other ends of the plurality of first springs are fixedly connected to the cavity wall of the cavity, sliding grooves matching the support rods are opened at the four bottom corners of the CNC gear hobbing machine body, the upper side rod wall of the support rod is slidably connected to the groove wall of the sliding groove, a second spring is fixedly provided on the upper end of the support rod, and a limiting mechanism is provided on the rod wall of the support rod.

[0007] Preferably, the limiting mechanism comprises a limiting block, a side wall of the slide slot is provided with a vertical limiting slot, the limiting block is slidably arranged at the inner lower side of the limiting slot, and one end of the limiting block is fixedly connected to the upper side of the rod wall of the support rod.

[0008] Preferably, a plurality of placement grooves are evenly formed at the bottom of the movable plate, and balls are slidably arranged in the plurality of placement grooves, and the lower ends of the plurality of balls extend out of the placement grooves and abut against the lower wall of the cavity.

[0009] Preferably, support blocks are fixedly provided at the four corners of the bottom of the base.

[0010] Preferably, the support block is a wear-resistant rubber block.

[0011] Preferably, the first spring and the second spring are always in a compressed state.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The shock absorbing mechanism of the CNC gear hobbing machine is provided with a support rod, a movable plate, a first spring, a ball, a limit block and a second spring. The vibration of the CNC gear hobbing machine body in the horizontal direction is transmitted to the movable plate through the support rod. The multiple first springs around the movable plate can provide shock absorption for the vibration in the horizontal direction. The vibration of the CNC gear hobbing machine body in the vertical direction is transmitted to the second spring. The second spring can provide shock absorption for the vibration in the vertical direction. The vibration generated during the processing of the CNC gear hobbing machine body can be effectively damped in all directions. The shock absorption effect is good, and the service life of the CNC gear hobbing machine body is prolonged. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The figure is a schematic diagram of the structure of a shock absorbing mechanism of a CNC gear hobbing machine.

[0015] Figure 2 The figure is a side structural diagram of a shock absorbing mechanism of a CNC gear hobbing machine.

[0016] Figure 3 for Figure 2 An enlarged schematic diagram of the local part A in the figure.

[0017] In the figure: 1. base; 2. CNC gear hobbing machine body; 3. round hole; 4. second spring; 5. limit groove; 6. limit block; 7. support rod; 8. first spring; 9. ball; 10. movable plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figures 1 to 3 , the utility model provides a technical solution:

[0020] A shock absorbing mechanism for a numerically controlled gear hobbing machine comprises a numerically controlled gear hobbing machine body 2 and a base 1. The base 1 has cavities at the four corners thereof. The side walls of the cavities are arranged in a circular shape. A circular hole 3 is provided in the middle of the upper end of the cavity. A movable disk 10 is slidably arranged in the cavity. A support rod 7 is provided in the middle of the circular hole 3. The lower end of the support rod 7 extends to the bottom of the cavity and is fixedly connected to the middle of the upper end of the movable disk 10. A plurality of first springs 8 are fixedly provided on the circumferential wall of the movable disk 10. The other ends of the plurality of first springs 8 are fixedly connected to the cavity wall of the cavity. Slide grooves cooperating with the support rod 7 are provided at the four corners of the bottom of the numerically controlled gear hobbing machine body 2. The upper side rod wall of the support rod 7 is slidably connected to the groove wall of the slide groove. A second spring 4 is fixedly provided on the upper end of the support rod 7. The rod wall of the support rod 7 is provided with a limiting mechanism.

[0021] The limiting mechanism includes a limiting block 6 , a vertical limiting groove 5 is opened on the side wall of the slide slot, the limiting block 6 is slidably arranged at the lower side of the inner part of the limiting groove 5 , and one end of the limiting block 6 is fixedly connected to the upper side of the rod wall of the support rod 7 .

[0022] A plurality of placement grooves are evenly arranged at the bottom of the movable plate 10 , and balls 9 are slidably arranged in the plurality of placement grooves. The lower ends of the plurality of balls 9 extend out of the placement grooves and abut against the lower wall of the cavity, so that the balls 9 reduce the friction at the bottom of the movable plate 10 .

[0023] Support blocks are fixedly provided at the four corners of the bottom of the base 1, and the support blocks improve the stability of the base 1 when it is placed. The support blocks are wear-resistant rubber blocks, which have good wear resistance and strong anti-slip properties.

[0024] The first spring 8 and the second spring 4 are always in a compressed state.

[0025] When in use, the vibration of the CNC gear hobbing machine body 2 in the horizontal direction is transmitted to the movable plate 10 through the support rod 7. The multiple first springs 8 around the movable plate 10 can provide shock absorption for the vibration in the horizontal direction. The vibration of the CNC gear hobbing machine body 2 in the vertical direction is transmitted to the second spring 4. The second spring 4 can provide shock absorption for the vibration in the vertical direction. It can effectively perform all-round shock absorption on the vibration generated during the processing of the CNC gear hobbing machine body 2, with good shock absorption effect, thereby increasing the service life of the CNC gear hobbing machine body 2.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shock absorbing mechanism for a CNC gear hobbing machine, comprising a CNC gear hobbing machine body (2) and a base (1), characterized in that: The base (1) is provided with a cavity at the four corners inside, the side cavity wall of the cavity is set to be circular, a circular hole (3) is opened in the middle of the upper end of the cavity, a movable disk (10) is slidably arranged in the cavity, a support rod (7) is provided in the middle of the circular hole (3), the lower end of the support rod (7) extends to the bottom of the cavity and is fixedly connected to the middle of the upper end of the movable disk (10), a plurality of first springs (8) are fixedly provided on the circumferential wall of the movable disk (10), the other ends of the plurality of first springs (8) are fixedly connected to the cavity wall of the cavity, a sliding groove matching with the support rod (7) is opened at the four corners of the bottom of the CNC gear hobbing machine body (2), the upper side rod wall of the support rod (7) is slidably connected to the groove wall of the sliding groove, a second spring (4) is fixedly provided on the upper end of the support rod (7), and a limiting mechanism is provided on the rod wall of the support rod (7).

2. A shock absorbing mechanism for a CNC gear hobbing machine according to claim 1, characterized in that: The limiting mechanism comprises a limiting block (6), a side wall of the slide groove is provided with a vertical limiting groove (5), the limiting block (6) is slidably arranged at the lower side of the inner part of the limiting groove (5), and one end of the limiting block (6) is fixedly connected to the upper side of the rod wall of the support rod (7).

3. The shock absorbing mechanism of a CNC gear hobbing machine according to claim 1, characterized in that: The bottom of the movable plate (10) is evenly provided with a plurality of placement grooves, in which balls (9) are slidably arranged, and the lower ends of the balls (9) extend out of the placement grooves and abut against the lower wall of the cavity.

4. The shock absorbing mechanism of a CNC gear hobbing machine according to claim 1, characterized in that: Support blocks are fixedly provided at the four corners of the bottom of the base (1).

5. The shock absorbing mechanism of a CNC gear hobbing machine according to claim 4, characterized in that: The supporting block is a wear-resistant rubber block.

6. The shock absorbing mechanism of a CNC gear hobbing machine according to claim 1, characterized in that: The first spring (8) and the second spring (4) are always in a compressed state.

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