Tip replacement structure of gear hobbing machine

Abstract

The utility model relates to the field of gear hobbing machines, in particular to a tip replacement structure of a gear hobbing machine, which comprises a mounting seat, an assembly hole is arranged at the center of one end of the mounting seat, a tip is arranged in the assembly hole, a fixing groove is arranged on the outer wall of one side of the mounting seat, and a fixing structure is arranged at the center of the assembly hole of the fixing groove. The fixing structure comprises movable grooves formed in the mounting base and located in the centers of the two ends of the fixing groove, a two-way screw rotationally connected to the fixing groove and located at one ends of the movable grooves, a mounting groove formed in the mounting base and located at the bottom of the fixing groove, and a motor mounted in the mounting groove. The center is connected with the contact surface through the first bearing, the second bearing and the movable roller, so that abrasion is reduced after the center rotates, the first dustproof cover and the second dustproof cover are matched with the sealing ring to seal the interior of the assembly cavity, dust prevention and sealing are facilitated, and operation stability is guaranteed; abrasion is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of gear hobbing machines, in particular to a top replacement structure of a gear hobbing machine. 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. Gear processing machine tools that use hobs to process spur, helical and herringbone cylindrical gears and worm wheels according to the development method;

[0003] The traditional gear hobbing machine center is usually installed with a Morse sleeve to fix the center, which cannot achieve follow-up rotation, affecting the accuracy of the processed product and posing the risk of wearing the center hole of the product. Utility Model Content

[0004] The purpose of the utility model is to address the above-mentioned problems and shortcomings and propose a top replacement structure for a gear hobbing machine: the clamping plates on the outer walls of both ends of the bidirectional screw are close to each other, and after the clamping plates are close to each other, the movable roller at one end contacts the outer wall of the top, clamping the outer wall of the top inside the assembly hole, facilitating the fixing of the top and assisting the top to rotate, so that the top can rotate by itself, improving the processing accuracy. It solves the accuracy and wear problems caused by the inability of the top to rotate.

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

[0006] A tip replacement structure for a gear hobbing machine includes a mounting seat, an assembly hole is provided at the center of one end of the mounting seat, and a tip is provided in the assembly hole, a fixing groove is provided on an outer wall of one side of the mounting seat, and the fixing groove is located at the center of the assembly hole and a fixing structure is provided; the fixing structure includes a movable groove provided at the center of both ends of the fixing groove of the mounting seat, a bidirectional screw rotatably connected to the fixing groove at one end of the movable groove, a mounting groove provided at the bottom of the fixing groove of the mounting seat, and a motor installed in the mounting groove.

[0007] Preferably, bearing 1 and bearing 2 are respectively installed on the outer walls at both ends of the tip, and the outer walls of bearing 1 and bearing 2 are slidably connected to the inner walls at both ends of the assembly hole.

[0008] Preferably, the outer walls of the top and bottom ends of the mounting seat are provided with sealing grooves at the assembly holes, and the outer walls of the mounting seat are provided with threaded holes distributed at equal distances at the sealing grooves, and the mounting seat is respectively provided with dust cover 1 and dust cover 2 inserted in the sealing grooves.

[0009] Preferably, rubber pads are placed on the outer walls of the dust cover one and the dust cover two near the sealing groove, and the outer walls of the dust cover one and the dust cover two are rotatably connected with screws at the threaded holes, and the top outer wall located inside the dust cover one and the dust cover two is provided with a sealing ring.

[0010] Preferably, the motor output shaft is connected to a worm, and the top end of the worm is rotatably connected to the inner wall of the fixed groove, a lubrication box is installed at the center of the inner wall of the fixed groove, and the worm and the bidirectional screw are both rotatably connected in the lubrication box.

[0011] Preferably, a worm gear is installed at the center of the bidirectional screw inside the lubrication box, and the worm is meshed with the worm gear, and an addition pipe is connected to the outer wall of one side of the lubrication box.

[0012] Preferably, the outer walls at both ends of the bidirectional screw are threadedly connected to clamping plates, and the outer walls at the other ends of the clamping plates are rotatably connected to movable rollers, and the clamping plates are slidably connected in the movable grooves.

[0013] Preferably, the motor is connected to the switch via a wire, and the switch is connected to the power supply via a wire.

[0014] The beneficial effects of the utility model are:

[0015] 1. The motor drives the worm to rotate. After the worm rotates, it meshes with the worm wheel at the center of the bidirectional screw inside the lubrication box, thereby driving the bidirectional screw to rotate, reducing wear and facilitating the extension of service life.

[0016] 2. The clamping plates on the outer walls of both ends of the bidirectional screw are close to each other. After the clamping plates are close to each other, the movable roller at one end contacts the outer wall of the top, clamping the outer wall of the top inside the assembly hole, which is convenient for fixing the top and assisting the top to rotate, so that the top can rotate by itself, improving the processing accuracy;

[0017] 3. The top is connected to the contact surface of the movable roller through bearing 1 and bearing 2, so that the wear of the top is reduced after rotation. Dust cover 1 and dust cover 2 cooperate with sealing ring to seal the inside of the assembly cavity, which is convenient for dust prevention and sealing, and ensures running stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall internal structure of a top replacement structure of a gear hobbing machine proposed by the utility model;

[0019] Figure 2 It is a schematic diagram of the expanded structure of a top replacement structure of a gear hobbing machine proposed by the utility model;

[0020] Figure 3 A schematic diagram of a top installation structure of a top replacement structure of a gear hobbing machine proposed by the utility model;

[0021] Figure 4 The utility model is a schematic diagram of the internal cross-sectional structure of a center replacement structure of a gear hobbing machine.

[0022] In the figure: 1 mounting seat, 2 assembly hole, 3 center, 4 bearing 1, 5 bearing 2, 6 sealing ring, 7 sealing groove, 8 dust cover 1, 9 dust cover 2, 10 threaded hole, 11 fixed groove, 12 fixed structure, 13 movable groove, 14 bidirectional screw, 15 clamping plate, 16 movable roller, 17 lubrication box, 18 worm gear, 19 worm, 20 mounting groove, 21 motor, 22 adding pipe. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0024] Embodiment 1:

[0025] Reference Figure 1-3 A top replacement structure of a gear hobbing machine includes a mounting seat 1, an assembly hole 2 is opened at the center of one end of the mounting seat 1, and a top 3 is arranged in the assembly hole 2, a fixing groove 11 is opened on the outer wall of one side of the mounting seat 1, and the fixing groove 11 is located at the center of the assembly hole 2 and a fixing structure 12 is provided. When replacing the top 3, the dust cover 1 8 and the dust cover 2 9 in the sealing grooves 7 at both ends of the mounting seat 1 are removed, and then the motor 21 is started to drive the clamping plates 15 to move away from each other, and then the top 3 is pulled out from the assembly hole 2 downward and replaced with a new top 3, which is convenient for replacement;

[0026] The top 3 is connected to the contact surface through the bearing 1 4, the bearing 2 5 and the movable roller 16, so that the top 3 can reduce wear after rotation. The dust cover 1 8 and the dust cover 2 9 cooperate with the sealing ring 6 to seal the inside of the assembly hole 2;

[0027] The outer walls at both ends of the top 3 are respectively installed with bearing 1 4 and bearing 2 5, and the outer walls of bearing 1 4 and bearing 2 5 are slidably connected to the inner walls at both ends of the assembly hole 2. The top 3 cooperates with bearing 1 4 and bearing 2 5 and the movable roller 16 at one end of the clamping plate 15 inside the assembly hole 2 to facilitate driving rotation, reduce wear and improve processing accuracy.

[0028] The outer walls of the top and bottom ends of the mounting seat 1 are both provided with sealing grooves 7 at the assembly hole 2, and the outer wall of the mounting seat 1 is provided with threaded holes 10 distributed at equal distances at the sealing grooves 7. The mounting seat 1 is respectively provided with a dust cover 1 8 and a dust cover 2 9 inserted in the sealing grooves 7. The dust cover 1 8 and the dust cover 2 9 are installed in the sealing grooves 7 to prevent dust from entering, and at the same time limit the top 3 and seal the assembly hole 2 to ensure operational stability;

[0029] The outer wall of the dust cover 1 8 and the dust cover 2 9 near the sealing groove 7 is provided with a rubber pad, and the outer wall of the dust cover 1 8 and the dust cover 2 9 is connected with screws at the threaded hole 10, and the outer wall of the top 3 is provided with a sealing ring 6 at the inner part of the dust cover 1 8 and the dust cover 2 9.

[0030] Embodiment 2:

[0031] Reference Figure 1 and Figure 4 The fixing structure 12 includes a movable groove 13 provided on the mounting seat 1 at the center of both ends of the fixing groove 11, a bidirectional screw 14 rotatably connected to the fixing groove 11 at one end of the movable groove 13, a mounting groove 20 provided on the mounting seat 1 at the bottom of the fixing groove 11, and a motor 21 installed in the mounting groove 20;

[0032] The output shaft of the motor 21 is connected to a worm 19, and the top end of the worm 19 is rotatably connected to the inner wall of the fixing groove 11. A lubrication box 17 is installed at the center of the inner wall of the fixing groove 11, and the worm 19 and the bidirectional screw 14 are both rotatably connected in the lubrication box 17;

[0033] A worm wheel 18 is installed at the center of the bidirectional screw 14 inside the lubrication box 17, and the worm 19 is meshed with the worm wheel 18. An addition pipe 22 is connected to the outer wall of one side of the lubrication box 17. When the motor 21 drives the worm wheel 18 inside the lubrication box 17 to rotate the bidirectional screw 14, the oil inside the lubrication box 17 is easy to reduce wear and easy to use;

[0034] The outer walls of both ends of the bidirectional screw 14 are threadedly connected with a clamping plate 15, and the outer wall of the other end of the clamping plate 15 is rotatably connected with a movable roller 16, and the clamping plate 15 is slidably connected in the movable groove 13. The clamping plates 15 at both ends of the bidirectional screw cooperate with the movable roller 16 to fix the top 3 and assist the top 3 to rotate, so as to fix the top 3;

[0035] The motor 21 is connected to the switch via a wire, and the switch is connected to the power source via a wire.

[0036] Working principle: When in use, the outer wall of the top 3 is covered with bearing 1 4 and bearing 2 5, and then the top 3 is installed in the assembly hole 2 on the mounting seat 1. At this time, the motor 21 is started to drive the worm 19 to rotate. After the worm 19 rotates, it meshes with the worm wheel 18 at the center of the bidirectional screw 14 inside the lubrication box 17, thereby driving the bidirectional screw 14 to rotate, driving the clamping plates 15 on the outer walls of both ends of the bidirectional screw 14 to approach each other. After the clamping plates 15 approach each other, the movable roller 16 at one end contacts the outer wall of the top 3, clamping the outer wall of the top 3 inside the assembly hole 2, and the dust cover 1 is installed. 8 and dust cover 2 9 are respectively installed in the sealing grooves 7 at both ends of the mounting seat 1, and the dust cover 1 8 and dust cover 2 9 further restrict the top 3 in the assembly hole 2. When the top 3 needs to rotate, a driving motor is installed on the top outer wall of the mounting seat 1, and one end of the driving motor is connected to one end of the top 3. The driving motor drives the top 3 to rotate, and the top 3 is connected to the contact surface through the bearing 1 4, the bearing 2 5 and the movable roller 16, so that the wear of the top 3 is reduced after the rotation. The dust cover 1 8 and the dust cover 2 9 cooperate with the sealing ring 6 to seal the inside of the assembly hole 2 to complete the assembly.

[0037] The exemplary implementation of the utility model is described in detail with reference to the examples, however, it is understood by those skilled in the art that, without departing from the concept of the utility model, various modifications and alterations may be made to the above-mentioned specific embodiments, and various combinations of the various technical features and structures proposed in the utility model may be made without exceeding the scope of protection of the utility model, which is determined by the attached claims. The foregoing description of the specific exemplary implementation of the utility model is not intended to limit the utility model to the precise form disclosed, and it is obvious that many changes and variations can be made according to the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary implementations of the utility model and various different choices and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A center replacement structure for a gear hobbing machine, comprising a mounting seat (1), characterized in that: An assembly hole (2) is provided at the center of one end of the mounting seat (1), and a tip (3) is provided in the assembly hole (2); a fixing groove (11) is provided on an outer wall of one side of the mounting seat (1), and a fixing structure (12) is provided in the fixing groove (11) at the center of the assembly hole (2); The fixing structure (12) comprises a movable groove (13) provided on the mounting seat (1) at the center of both ends of the fixing groove (11), a bidirectional screw (14) rotatably connected to the fixing groove (11) at one end of the movable groove (13), a mounting groove (20) provided on the mounting seat (1) at the bottom of the fixing groove (11), and a motor (21) installed in the mounting groove (20).

2. The center replacement structure of a gear hobbing machine according to claim 1, characterized in that: The outer walls at both ends of the top (3) are respectively mounted with bearing one (4) and bearing two (5), and the outer walls of bearing one (4) and bearing two (5) are slidably connected to the inner walls at both ends of the assembly hole (2).

3. The center replacement structure of a gear hobbing machine according to claim 1, characterized in that: The outer walls of the top and bottom ends of the mounting seat (1) are both provided with sealing grooves (7) at the assembly hole (2), and the outer wall of the mounting seat (1) is both provided with threaded holes (10) distributed at equal distances at the sealing grooves (7), and the mounting seat (1) is respectively provided with a first dust cover (8) and a second dust cover (9) inserted in the sealing grooves (7).

4. The center replacement structure of a gear hobbing machine according to claim 3, characterized in that: The outer walls of the dust cover 1 (8) and the dust cover 2 (9) on one side close to the sealing groove (7) are both provided with rubber pads, and the outer walls of the dust cover 1 (8) and the dust cover 2 (9) are both rotatably connected with screws at the threaded holes (10), and the outer wall of the top (3) located inside the dust cover 1 (8) and the dust cover 2 (9) is sleeved with a sealing ring (6).

5. The center replacement structure of a gear hobbing machine according to claim 1, characterized in that: The output shaft of the motor (21) is connected to a worm (19), and the top end of the worm (19) is rotatably connected to the inner wall of the fixed groove (11). A lubrication box (17) is installed at the center of the inner wall of the fixed groove (11), and the worm (19) and the bidirectional screw (14) are both rotatably connected in the lubrication box (17).

6. The center replacement structure of a gear hobbing machine according to claim 5, characterized in that: A worm wheel (18) is installed at the center of the bidirectional screw (14) inside the lubrication box (17), and the worm (19) is meshed with the worm wheel (18). An outer wall on one side of the lubrication box (17) is connected to an addition pipe (22).

7. The center replacement structure of a gear hobbing machine according to claim 1, characterized in that: The outer walls at both ends of the bidirectional screw (14) are threadedly connected to clamping plates (15), and the outer wall at the other end of the clamping plate (15) is rotatably connected to a movable roller (16), and the clamping plate (15) is slidably connected in the movable groove (13).

8. The center replacement structure of a gear hobbing machine according to claim 1, characterized in that: The motor (21) is connected to the switch via a wire, and the switch is connected to the power supply via a wire.

Images