Gear grinding device for automobile gear machining

Abstract

The utility model discloses a gear grinding device for automobile gear machining, which relates to the technical field of gear machining and comprises a gear grinding machine body, a rotary chuck and a hob support are arranged on the gear grinding machine body, a hob body is rotatably mounted in the hob support, and a spraying mechanism is arranged on the hob support. The spraying mechanism comprises a liquid pump and a positioning support which are fixedly installed on the hob support, a reciprocating lead screw is rotationally installed in the positioning support, a reciprocating sliding block is arranged on the reciprocating lead screw, a spraying head support is fixedly installed on the reciprocating sliding block, a spraying head is fixedly installed on the spraying head support, and a driving mechanism is arranged between the reciprocating lead screw and the liquid pump. A conveying pipeline is arranged between the spraying nozzle and the liquid pump, and a positioning base is fixedly installed at the bottom of the liquid pump. According to the gear grinding device for automobile gear machining, through cooperative use of the driving mechanism and the spraying mechanism, cutting fluid can be evenly sprayed to the hob body, and the cooling and lubricating effects are improved.

Description

Technical Field

[0001] This utility model relates to the field of gear processing technology, specifically a gear grinding device for processing automotive gears. Background Technology

[0002] A gear grinding machine is a high-precision machine tool specifically designed for the precision machining and processing of gears. This machine tool, through the precise rotational motion of the hob and the feed motion of the workpiece, can perform meticulous grinding operations on the gear tooth surfaces. Its main purpose is to achieve high-precision tooth profiles, accurate tooth pitch, and ideal surface roughness standards for gears. Gear grinding machines have a wide range of applications, playing a crucial role in many fields such as automotive manufacturing, aerospace, shipbuilding, and the production of precision instruments. Using gear grinding machines can significantly improve the smoothness of gear transmission, effectively reduce noise during operation, and significantly extend the service life of gears, playing an indispensable role in improving the performance and reliability of the entire mechanical equipment.

[0003] During the precision machining of automotive gears using a gear grinding machine, cutting fluid needs to be sprayed onto the hob to ensure its efficient operation. This spraying process aims to effectively lubricate and cool the hob. However, current cutting fluid spraying devices are merely nozzles that spray cutting fluid from a fixed position. This fixed-position spraying method prevents the cutting fluid from fully covering all parts of the hob, resulting in uneven cutting fluid distribution. This not only affects machining accuracy and efficiency but may also adversely impact the hob's lifespan. Utility Model Content

[0004] The purpose of this invention is to provide a gear grinding device for automotive gear processing, so as to solve the problem of uneven cutting fluid spraying in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gear grinding device for automotive gear processing, comprising a gear grinding machine body, a rotary chuck and a hob holder on the gear grinding machine body, a hob body rotatably mounted inside the hob holder, a spraying mechanism on the hob holder, the spraying mechanism comprising a liquid pump and a positioning bracket fixedly mounted on the hob holder, a reciprocating lead screw rotatably mounted inside the positioning bracket, a reciprocating slider on the reciprocating lead screw, a nozzle bracket fixedly mounted on the reciprocating slider, a spray nozzle fixedly mounted on the nozzle bracket, and a driving mechanism between the reciprocating lead screw and the liquid pump.

[0006] Preferably, a delivery pipe is provided between the spray nozzle and the liquid pump, and a positioning base is fixedly installed at the bottom of the liquid pump.

[0007] Preferably, the positioning bracket is provided with a bearing, and the reciprocating lead screw is rotatably mounted on the positioning bracket through the bearing.

[0008] Preferably, the liquid pump is fixedly installed on the hob bracket via a positioning base, the spray nozzle is fixedly installed on one side of the reciprocating slider via a nozzle bracket, one end of the delivery pipe is connected to the spray nozzle, the other end of the reciprocating slider is connected to the liquid pump, the liquid pump is provided with a liquid inlet pipe, and the end of the liquid inlet pipe is located in the cutting fluid.

[0009] Preferably, the driving mechanism includes a motor bracket fixedly mounted on the hob support, a drive motor fixedly mounted on the motor bracket, a first transmission shaft and a second transmission shaft rotatably mounted on both sides of the output end of the drive motor, a reducer provided on the first transmission shaft, and helical gears fixedly mounted on the first transmission shaft, the second transmission shaft and the output end of the drive motor, and the three sets of helical gears meshing together, and an installation opening is provided on the side wall of the motor bracket.

[0010] Preferably, the motor bracket is provided with a retainer, and both the first drive shaft and the second drive shaft are rotatably mounted in the motor bracket through the retainer.

[0011] Preferably, both the first drive shaft and the second drive shaft extend beyond the motor bracket through the mounting port. One end of the first drive shaft is fixed to the reciprocating lead screw, and one end of the second drive shaft is fixedly mounted on the input shaft of the liquid pump.

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

[0013] 1. In this application, after the drive motor starts, it drives the first and second drive shafts to rotate. Subsequently, the rotation of the second drive shaft causes the liquid pump to start operating. During the operation of the liquid pump, cutting fluid is delivered to the spray nozzle through the delivery pipeline. After the cutting fluid reaches the spray nozzle, it sprays onto the hob body to achieve its cooling and lubrication functions.

[0014] 2. After being reduced in speed by a reducer, the first transmission shaft drives the reciprocating lead screw to rotate. Subsequently, the rotational motion of the reciprocating lead screw is converted into the left-right reciprocating motion of the reciprocating slider. Furthermore, the reciprocating motion of the reciprocating slider drives the spray nozzle on the nozzle bracket to reciprocate left and right above the hob body, thereby achieving uniform spraying of cutting fluid onto the hob body. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the spraying mechanism of this utility model;

[0018] Figure 4 This is a schematic diagram of the drive mechanism of this utility model.

[0019] The diagram shows the following components: 1. Gear grinding machine body; 2. Rotary chuck; 3. Hob cutter support; 4. Hob cutter body; 5. Spraying mechanism; 501. Positioning bracket; 502. Reciprocating lead screw; 503. Spray head bracket; 504. Spray head; 505. Positioning base; 506. Liquid pump; 507. Conveying pipe; 508. Reciprocating slider; 6. Drive mechanism; 601. Drive motor; 602. Motor bracket; 603. Mounting port; 604. Reducer; 605. First drive shaft; 606. Helical gear; 607. Second drive shaft. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a gear grinding device for automotive gear processing, including a gear grinding machine body 1, a rotary chuck 2 and a hob holder 3 on the gear grinding machine body 1, a hob body 4 rotatably mounted inside the hob holder 3, a spraying mechanism 5 on the hob holder 3, and a driving mechanism 6 between the reciprocating screw 502 and the liquid pump 506. Through the cooperation of the driving mechanism 6 and the spraying mechanism 5, cutting fluid can be evenly sprayed onto the hob body 4 to improve the cooling and lubrication effect.

[0022] like Figure 2 and Figure 3 As shown, the spraying mechanism 5 includes a liquid pump 506 and a positioning bracket 501 fixedly mounted on the roller cutter bracket 3. A reciprocating screw 502 is rotatably mounted inside the positioning bracket 501. A reciprocating slider 508 is provided on the reciprocating screw 502. A nozzle bracket 503 is fixedly mounted on the reciprocating slider 508. A spray nozzle 504 is fixedly mounted on the nozzle bracket 503. A conveying pipe 507 is provided between the spray nozzle 504 and the liquid pump 506. A positioning base 505 is fixedly mounted at the bottom of the liquid pump 506. A bearing is provided on the positioning bracket 501. The reciprocating screw 502 is rotatably mounted on the positioning bracket 501 through the bearing.

[0023] Specifically, after being reduced in speed by the reducer 604, the first drive shaft 605 begins to perform its function. It receives the power transmitted from the reducer 604 and converts it into rotational motion. As the first drive shaft 605 rotates, the reciprocating screw 502 connected to it also begins to rotate. The rotational motion of the reciprocating screw 502 is the key power source for the left-right reciprocating motion of the reciprocating slider 508. Driven by the reciprocating screw 502, the reciprocating slider 508 reciprocates along a specific trajectory. This reciprocating motion is crucial for the spray nozzle 504 on the nozzle holder 503, because the nozzle holder 503 moves with the movement of the reciprocating slider 508. The spray nozzle 504 performs left-right reciprocating motion above the hob body 4, a process that ensures that the cutting fluid can be sprayed evenly onto the surface of the hob body 4.

[0024] like Figure 2 and Figure 4 As shown, the drive mechanism 6 includes a motor bracket 602 fixedly mounted on the hob bracket 3. A drive motor 601 is fixedly mounted on the motor bracket 602. A first transmission shaft 605 and a second transmission shaft 607 are rotatably mounted on both sides of the output end of the drive motor 601, respectively. A reducer 604 is provided on the first transmission shaft 605. Helical gears 606 are fixedly mounted on the first transmission shaft 605, the second transmission shaft 607 and the output end of the drive motor 601, and the three sets of helical gears 606 mesh together. An installation port 603 is provided on the side wall of the motor bracket 602. A retainer is provided inside the motor bracket 602. The first transmission shaft 605 and the second transmission shaft 607 are rotatably mounted inside the motor bracket 602 through the retainer.

[0025] Specifically, after the drive motor 601 is started, it will drive the first drive shaft 605 and the second drive shaft 607 to rotate. As the second drive shaft 607 rotates, it will further drive the liquid pump 506 to start working. Once the liquid pump 506 starts operating, it will deliver the cutting fluid to the spray nozzle 504 through the delivery pipe 507. Once the cutting fluid reaches the spray nozzle 504, it will be sprayed out from the nozzle, evenly spraying it onto the surface of the hob body 4. This spraying method not only effectively reduces the temperature of the hob but also provides it with the necessary lubrication, thereby ensuring the performance and lifespan of the hob during operation.

[0026] Working principle: During use, the gear blank is first firmly fixed on the rotating chuck 2. Then, by precisely controlling the rotation of the hob body 4 and the rotating chuck 2, the gear blank can be finely machined. During the machining process, the drive motor 601 can be started. After starting the drive motor 601, it will drive the first drive shaft 605 and the second drive shaft 607 to rotate. After the second drive shaft 607 rotates, it will drive the liquid pump 506 to operate. After the liquid pump 506 operates, it will deliver cutting fluid to the spray nozzle 504 through the delivery pipe 507. The cutting fluid delivered to the spray nozzle 504 will be sprayed onto the hob body 4 to cool and lubricate the hob. After being reduced in speed by reducer 604, the first drive shaft 605 drives the reciprocating lead screw 502 to rotate. After the reciprocating lead screw 502 rotates, it drives the reciprocating slider 508 to move back and forth. After the reciprocating slider 508 moves back and forth, it drives the spray nozzle 504 on the nozzle bracket 503 to move back and forth above the hob body 4, so as to spray the cutting fluid evenly onto the hob body 4.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gear grinding device for automobile gear machining, comprising a gear grinding machine body (1), a rotary chuck (2) and a hob support (3) are arranged on the gear grinding machine body (1), a hob body (4) is rotatably installed in the hob support (3), characterized in that: The roller cutter bracket (3) is provided with a spraying mechanism (5). The spraying mechanism (5) includes a liquid pump (506) and a positioning bracket (501) fixedly installed on the roller cutter bracket (3). A reciprocating screw (502) is rotatably installed inside the positioning bracket (501). A reciprocating slider (508) is provided on the reciprocating screw (502). A nozzle bracket (503) is fixedly installed on the reciprocating slider (508). A spray nozzle (504) is fixedly installed on the nozzle bracket (503). A driving mechanism (6) is provided between the reciprocating screw (502) and the liquid pump (506).

2. A gear grinding machine for machining of automotive gears as claimed in claim 1 wherein: A delivery pipe (507) is provided between the spray nozzle (504) and the liquid pump (506), and a positioning base (505) is fixedly installed at the bottom of the liquid pump (506).

3. A gear grinding machine for machining of automotive gears as claimed in claim 2 wherein: The positioning bracket (501) is provided with a bearing, and the reciprocating screw (502) is rotatably mounted on the positioning bracket (501) through the bearing.

4. A gear grinding machine for machining automotive gears as claimed in claim 3, wherein: The liquid pump (506) is fixedly installed on the roller cutter bracket (3) via the positioning base (505), the spray nozzle (504) is fixedly installed on one side of the reciprocating slider (508) via the nozzle bracket (503), one end of the conveying pipe (507) is connected to the spray nozzle (504), and the other end of the reciprocating slider (508) is connected to the liquid pump (506).

5. A gear grinding device for automotive gear processing according to claim 4, characterized in that: The drive mechanism (6) includes a motor bracket (602) fixedly mounted on the hob bracket (3). A drive motor (601) is fixedly mounted on the motor bracket (602). A first transmission shaft (605) and a second transmission shaft (607) are rotatably mounted on both sides of the output end of the drive motor (601). A reducer (604) is provided on the first transmission shaft (605). Helical gears (606) are fixedly mounted on the output ends of the first transmission shaft (605), the second transmission shaft (607), and the drive motor (601), and the three sets of helical gears (606) mesh together. An installation port (603) is provided on the side wall of the motor bracket (602).

6. A gear grinding machine for machining automotive gears as claimed in claim 5, wherein: The motor bracket (602) is provided with a retainer, and the first drive shaft (605) and the second drive shaft (607) are rotatably mounted in the motor bracket (602) through the retainer.

7. A gear grinding machine for machining automotive gears as claimed in claim 6, wherein: The first drive shaft (605) and the second drive shaft (607) both extend out of the motor bracket (602) through the mounting port (603). One end of the first drive shaft (605) is fixed on the reciprocating lead screw (502), and one end of the second drive shaft (607) is fixedly mounted on the input shaft of the liquid pump (506).

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