CN214923072U - Worm gear running-in equipment of automobile steering system - Google Patents

Abstract

The utility model discloses a car a steering system worm wheel running-in equipment relates to worm wheel running-in equipment technical field, the large-scale motor assembly comprises an equipment body, the equipment body includes that left slip table feed mechanism, positioning mechanism, worm measure afterburning little slip table, right slip table feed mechanism, detection mechanism and hydraulic system, positioning mechanism includes casing, hydraulic clamping dabber, rotates main shaft, clamping cylinder, the hydraulic clamping dabber is fixed on rotating the main shaft, the hydraulic clamping dabber is provided with interior round clamp structure, the hydraulic clamping dabber presss from both sides through interior round clamp structure and presss from both sides tight the installation worm wheel, clamping cylinder's output and rotation are connected with the ejector pin between the main shaft. The utility model improves the surface of the worm wheel through the equipment body, and the surface of the worm wheel is provided with certain lines after the worm wheel is in running-in, thereby having a certain function of storing grease, and being capable of greatly reducing or not having abnormal sound; the quality of the automobile steering device is improved.

Description

Worm gear running-in equipment of automobile steering system

Technical Field

The utility model relates to a worm wheel running-in equipment technical field especially relates to a car a steering system worm wheel running-in equipment.

Background

The automobile steering device is also called steering machine and steering machine, and is the most important part in automobile steering system. The steering wheel has the functions of increasing the force transmitted to the steering transmission mechanism by the steering wheel and changing the transmission direction of the force.

At present, before the automobile steering gear leaves a factory, a special testing machine is required to test the performance and some parameters of the automobile steering gear; the working principle is as follows: the special automobile steering device testing machine is used for simulating the steering device to work under the actual working condition, the testing machine is used for detecting various parameters of the steering device in real time, and the phenomenon that the assembly is unqualified due to the fact that the steering device works abnormally due to the fact that the reducing worm wheel in the existing steering device is an injection molding part and the surface is smooth (the function of storing grease is not achieved).

From the above, we have designed an automobile steering system worm gear running-in device to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a worm gear running-in device of an automobile steering system.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a worm gear running-in device of an automobile steering system comprises a device body, wherein the device body comprises a left sliding table feeding mechanism, a positioning mechanism, a worm measuring stress application small sliding table, a right sliding table feeding mechanism, a detection mechanism and a hydraulic system,

the positioning mechanism comprises a shell, a hydraulic clamping mandrel, a rotating main shaft and a clamping oil cylinder, wherein the hydraulic clamping mandrel is fixed on the rotating main shaft and is provided with an inner circle clamping structure, the hydraulic clamping mandrel is provided with a worm wheel in a clamping manner through the inner circle clamping structure, an ejector rod is connected between the output end of the clamping oil cylinder and the rotating main shaft, and a belleville spring is arranged on the outer side above the ejector rod;

the detection mechanism comprises a driving side and a braking side, the driving side and the braking side are respectively arranged on the right sliding table feeding mechanism and the left sliding table feeding mechanism, and the driving side comprises a servo motor, a torque sensor, a driving worm tool spindle, a quick tool changing mechanism I and a tool automatic clamping mechanism I; the braking side comprises a second automatic tool clamping mechanism, a second quick tool changing mechanism, a worm of a tool at the braking side, a servo motor for tool setting, an origin sensor, an encoder, a magnetic powder brake, an electromagnetic clutch and a driving shaft; the worm cutter main shaft is connected through shaft coupling direct drive by servo motor, torque sensor sets up in the middle of servo motor and worm cutter main shaft, the opposite side of drive worm cutter main shaft in proper order with quick tool changing mechanism one with a cutter automatic clamping mechanism installation, initial point sensor and encoder are installed in proper order in the drive shaft, the opposite side and the braking side cutter worm fixed connection of drive shaft, servo motor and drive shaft pass through the hold-in range and are connected for the tool setting.

Preferably, the hydraulic clamping mandrel clamps the worm wheel through the disc spring, and when the hydraulic clamping mandrel loosens the worm wheel, the clamping oil cylinder drives the ejector rod to move upwards in a single direction through oil supply of a hydraulic system.

Preferably, the equipment body is further provided with a positioning pin for fixing the left sliding table feeding mechanism and the right sliding table feeding mechanism.

Preferably, the positioning mechanism is arranged between the driving side and the braking side and is in meshed connection with the driving worm tool spindle and the braking side tool worm.

Preferably, the equipment body is further provided with a front-back sliding structure connected with the positioning mechanism, and the front-back sliding structure comprises a driving cylinder.

Preferably, the magnetic particle brake is directly connected to the brake-side drive shaft.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the hydraulic clamping mandrel 202 is provided with an inner circle clamping structure, the hydraulic clamping mandrel 202 is clamped and provided with a worm wheel 6 through the inner circle clamping structure, an ejector rod 205 is connected between the output end of the clamping oil cylinder 204 and the rotating main shaft 203, and a disc spring 206 is arranged on the outer side above the ejector rod 205, so that when the hydraulic clamping mandrel is used, the worm wheel can be automatically clamped and limited through the inner circle clamping structure;

2. the magnetic powder brake is adopted on the braking side to apply damping to the worm wheel, so that the worm wheel has certain resistance during running-in processing, and a more ideal running-in effect is achieved;

3. by improving the surface of the worm wheel, certain lines are added on the surface of the worm wheel after the worm wheel is worn, and the worm wheel has a certain function of storing grease, so that abnormal sound can be greatly reduced or does not exist; the quality of the automobile steering device is improved.

Drawings

Fig. 1 is a schematic structural view of a worm gear running-in device of an automobile steering system provided by the present invention;

FIG. 2 is an enlarged view of the position A of the worm gear running-in device of the automobile steering system provided by the utility model;

fig. 3 is a schematic structural view of a positioning mechanism of a worm gear running-in device of an automobile steering system according to the present invention;

fig. 4 is a perspective view of a positioning mechanism of a worm gear running-in device of an automobile steering system provided by the utility model;

fig. 5 is a schematic structural diagram of a driving side of a worm gear running-in device of an automobile steering system provided by the present invention;

fig. 6 is a schematic structural diagram of a braking side of the worm gear running-in device of the automobile steering system provided by the present invention;

fig. 7 is a schematic structural view of a right sliding table feeding mechanism of a worm gear running-in device of an automobile steering system;

fig. 8 is a schematic structural diagram of a vortex tube of a worm gear running-in device of an automobile steering system.

In the figure: 1 equipment body, 2 left sliding table feeding mechanism, 201 shell, 202 hydraulic clamping mandrel, 203 rotating main shaft, 204 clamping oil cylinder, 205 ejector rod, 206 belleville spring, 3 positioning mechanism, 4 right sliding table feeding mechanism, 5 detection mechanism, 6 worm wheel, 7 driving side, 701 servo motor, 702 torque sensor, 703 driving worm tool main shaft, 704 quick tool changing mechanism I, 705 tool automatic clamping mechanism I, 8 braking side, 801 tool automatic clamping mechanism II, 802 quick tool changing mechanism II, 803 braking side tool worm, 804 tool setting servo motor, 805 origin sensor, 806 encoder, 807 magnetic powder brake and 808 electromagnetic clutch.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

Referring to fig. 1, the worm gear running-in equipment for the automobile steering system comprises an equipment body 1, wherein the equipment body 1 comprises a left sliding table feeding mechanism 2, a positioning mechanism 3, a worm measurement stress application small sliding table, a right sliding table feeding mechanism 4, a detection mechanism 5 and a hydraulic system; the left sliding table feeding mechanism 2 and the right sliding table feeding mechanism 4 are both arranged on the worm measurement stress application small sliding table in a sliding manner;

in this example, referring to fig. 2-4, the positioning mechanism 3 includes a housing 201, a hydraulic clamping mandrel 202, a rotating main shaft 203, and a clamping cylinder 204, the hydraulic clamping mandrel 202 is fixed on the rotating main shaft 203, the hydraulic clamping mandrel 202 is provided with an inner circle clamping structure, the hydraulic clamping mandrel 202 is clamped and mounted with a worm wheel 6 through the inner circle clamping structure, an ejector rod 205 is connected between an output end of the clamping cylinder 204 and the rotating main shaft 203, and a belleville spring 206 is mounted on an upper outer side of the ejector rod 205; more specifically, the hydraulic clamping mandrel 202 clamps the worm wheel 6 through the disc spring 206, and when the hydraulic clamping mandrel 202 loosens the worm wheel 6, the clamping oil cylinder 204 supplies oil through a hydraulic system to drive the ejector rod 205 to move upwards in a single direction;

when the positioning mechanism 3 is used, the worm wheel 6 is manually placed on the positioning mechanism 3, the positioning mechanism 3 automatically positions and clamps the worm wheel 6, the teeth for placing the worm wheel 6 are always kept consistent, the positioning mechanism 3 can ensure that the tooth directions of the worm wheel 6 are kept consistent every time when the worm wheel 6 is placed, the worm wheel 6 is placed on a special hydraulic clamping mandrel 202 tool, and the worm wheel 6 is positioned and clamped through a hydraulic system;

more specifically, the positioning mechanism 3 adopts an inner circle clamping (as shown in fig. 3) hydraulic clamping mandrel 202 to automatically complete loading of a workpiece, when the worm wheel 6 is clamped, the inner circle clamping structure moves upwards and indirectly drives a disc spring 206 to compress upwards to apply force to clamp the worm wheel 6, when the worm wheel 6 is loosened, the worm wheel 6 is loosened by starting a hydraulic system, the clamping force is supplied to a clamping oil cylinder 204 through the hydraulic system of the machine tool, so that the clamping oil cylinder 204 drives a mandril 205 to move upwards to loosen the hydraulic clamping mandrel 202, and when the hydraulic system does not work, the disc spring 206 applies force to the clamping oil cylinder 204 to reset the clamping oil cylinder 204 and clamp the workpiece; the hydraulic clamping mandrel 202 is fixed on the rotating main shaft 203, and the rotating main shaft 203 has a rotating function, so that the hydraulic clamping mandrel 202 can be driven to rotate;

in this embodiment, referring to fig. 5 to 7, the detection mechanism 5 includes a driving side 7 and a braking side 8, the driving side 7 and the braking side 8 are respectively installed on the right sliding table feeding mechanism 4 and the left sliding table feeding mechanism 2, and the driving side 7 includes a servo motor 701, a torque sensor 702, a driving worm tool spindle 703, a fast tool changing mechanism one 704, and a tool automatic clamping mechanism one 705; the braking side 8 comprises a second automatic tool clamping mechanism 801, a second quick tool changing mechanism 802, a tool worm 803 on the braking side, a servo motor 804 for tool setting, an origin sensor 805, an encoder 806, a magnetic powder brake 807, an electromagnetic clutch 808 and a driving shaft;

after clamping, the end face of the worm wheel 6 is detected whether to be accurately positioned by air detection, wherein, the equipment body 1 is also provided with a front-back sliding structure connected with the positioning mechanism 3, the front-back sliding structure comprises a driving air cylinder, the equipment body 1 is also provided with a positioning pin for fixing the left sliding table feeding mechanism 2 and the right sliding table feeding mechanism 4, the left sliding table feeding mechanism 2 and the right sliding table feeding mechanism 4 comprise a left sliding table and a right sliding table, the sliding tables in the front-back direction move backwards along the front-back direction through the driving air cylinder to form a processing position, the code scanning gun starts to scan the two-dimensional code above the end face of the worm wheel 6, if the sliding table is correct, the positioning pin automatically locks the sliding table (the positioning pin adopts a taper pin to accurately position the sliding table) after the sliding table reaches the machining position, the right sliding table and the left sliding table simultaneously and rapidly move to a position where the sliding table is meshed with the worm wheel, and the sliding table slowly moves to be meshed with the worm wheel; the machining side servo motor 701 continuously moves the sliding table forwards to enable the worm on the driving worm tool spindle 703 to apply pressure to the worm wheel 6, when the force applied to the worm wheel 6 by the worm is 400N, the magnetic powder brake 807 starts to work, the torque force of the magnetic powder brake 807 is transmitted to the braking side tool worm 803 through the coupler, and the braking side tool worm 803 is meshed with the worm wheel 6 to enable the worm wheel 6 to generate certain damping;

in this example, more specifically, the worm tool spindle 703 is directly driven and connected by the servo motor 701 through a coupling, and the torque sensor 702 is disposed between the servo motor 701 and the worm tool spindle 703, so as to detect the force on the spindle in real time and feed back the force to the servo motor, and automatically adjust the rotation speed and torque of the motor, so that the worm tool can achieve ideal rotation speed and torque when machining a worm wheel;

the other side of a driving worm tool spindle 703 is sequentially installed with a quick tool changing mechanism I704 and a tool automatic clamping mechanism I705, an origin sensor 805 and an encoder 806 are sequentially installed on a driving shaft, the other side of the driving shaft is fixedly connected with a tool worm 803 at a braking side, and a servo motor 804 for tool setting is connected with the driving shaft through a synchronous belt; more specifically, the positioning mechanism 3 is installed between the driving side 7 and the braking side 8, and is meshed with the driving worm tool spindle 703 and the braking side tool worm 803; the magnetic particle brake 807 is directly connected to the drive shaft of the brake side 8.

Wherein, the drive shaft of the brake side 8 is provided with an origin sensor 805, an encoder 806 (incremental type), a magnetic powder brake 807, an electromagnetic clutch 808 and a servo motor 804 (the servo motor 804 is connected with the drive shaft through a synchronous belt, since the worm wheel 6 is in running-in, the motor of the brake side must be disconnected with the drive shaft, but the servo motor 804 is required to drive the drive shaft to rotate when the tool is adjusted, so as to find the correct meshing angle between the worm and the worm wheel 6, when the worm is adjusted, the electromagnetic clutch 808 is electrified (the electromagnetic clutch sucks and the drive shaft is connected with the servo motor 808), the servo motor 804 drives the drive shaft to rotate, and finds the correct meshing angle), the worm wheel 6 can be well engaged with the worm wheel 6 during each processing, the magnetic powder brake 807 is directly connected to the driving shaft of the braking side 8, and the magnetic powder brake 807 increases the force on the driving shaft of the braking side 8. When the cutter worm 803 on the braking side is machined, the magnetic powder brake 807 starts to work, the electromagnetic clutch 808 is powered off (the servo motor 804 and the driving shaft are disconnected), the resistance applied by the magnetic powder brake 807 can be directly applied to the driving shaft, the driving shaft is directly transmitted to the cutter worm 803 on the braking side, the cutter worm 803 on the braking side is meshed with the worm wheel 6 to give a certain reverse acting force to the worm wheel 6, so that certain damping is generated when the cutter worm 803 is meshed for machining, and the cutter worm 803 can well be in running-in with the worm wheel 6; the braking side is also provided with a pressure sensor, the pressure value of the cutter worm 803 at the braking side during braking can be detected in real time, the pressure value detected by the pressure sensor is converted into required information through system processing and is fed back to a machine tool system, and the system can adjust the pressure applied to the worm wheel by the braking worm at the braking side according to the information by adjusting a braking servo motor so as to grind the surface of the worm wheel 6;

the magnetic powder brake 807 is adopted on the braking side 8 to apply damping to the worm wheel 6, so that the worm wheel 6 has certain resistance during running-in processing, and a more ideal running-in effect can be achieved; the surface of the worm wheel 6 is improved, so that certain lines are added on the surface of the worm wheel 6 after the worm wheel is worn, a certain grease storage function is achieved, and abnormal sound can be greatly reduced or avoided; the quality of the automobile steering device is improved.

A servo motor 701 on the machining side (right side) starts to work, a torsion force is transmitted to a worm tool driving main shaft 703 by the servo motor 701 through a coupler, a worm wheel 6 and a worm are meshed to enable the worm to be in running-in, a torsion sensor 702 is arranged between the servo motor 701 and the tool worm in the machining process and can detect the torsion force output by the servo motor 701 and applied to the worm tool in real time and feed the torsion force back to an airport system, the output force and the output rotating speed of the servo motor 701 are adjusted in real time, a pressure sensor is arranged on the side, the pressure applied to the worm by the worm tool driving main shaft 703 can be detected by the pressure sensor, the ideal pressure applied to the worm wheel 6 by the worm tool can be adjusted by the servo motor 701, and if the equipment is incorrect, the equipment exits to the initial position.

More specifically, referring to fig. 8, the device body 1 is further provided with a vortex tube for cooling the worm wheel 6 and the worm tool, and the vortex tube is an energy separation device with a very simple structure and consists of a nozzle, a vortex chamber, a separation orifice plate and a cold-hot end tube. In operation, the compressed gas expands and accelerates in the nozzle and then spins, and the gas stream enters the hot end of the vortex tube tangentially at a speed of 1,000,000 rpm. When the air flow rotates at high speed in the vortex tube, the air flow is separated into two parts of air flows with unequal total temperature after vortex conversion, the air flow at the central part of the vortex chamber has low temperature, and the cold air flow forms ultralow-temperature cold air through the center of the generator and is collected to a cold air end to be discharged. The air flow in the outer layer of the vortex chamber has high temperature, and the cold and hot flow ratio can be adjusted by adjusting the hot end valve, so that the satisfactory refrigeration effect or heating effect can be obtained.

Meanwhile, a pneumatic position sensor is arranged on a detected gas path, pneumatics with the diameter of 1.5mm are arranged on a positioning workpiece on the end face of the worm wheel, if the workpiece is not laid flat or the positioning is not ideal, the pneumatic position sensor gives an alarm, information is fed back to the equipment, the workpiece clamping and positioning are unqualified, and if the workpiece clamping and positioning are qualified, the equipment normally operates until the worm wheel is in running-in and the detection is completed.

After the worm wheel 6 is machined, the worm wheel 6 needs to detect circumferential runout, and when the runout is detected, the force exerted on the worm wheel 6 by the worm is 20N after the worm is meshed with the worm wheel 6;

rectangular spring on the little slip table of upper left and right sides begins the compression during detection, and when compressing to pressure sensor to 20N, the right side worm drives worm wheel 6 and is rotary motion, and displacement sensor does real-time supervision worm wheel 6 worm and 6 meshing point beat and do the record when rotatory, judges whether the worm wheel is qualified.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (6)

1. The utility model provides a car a steering system worm wheel running-in equipment, includes equipment body (1), equipment body (1) is including left slip table feed mechanism (2), positioning mechanism (3), the little slip table of afterburning, right slip table feed mechanism (4), detection mechanism (5) and hydraulic system are measured to the worm, its characterized in that:

the positioning mechanism (3) comprises a shell (201), a hydraulic clamping mandrel (202), a rotating main shaft (203) and a clamping oil cylinder (204), wherein the hydraulic clamping mandrel (202) is fixed on the rotating main shaft (203), the hydraulic clamping mandrel (202) is provided with an inner circle clamping structure, the hydraulic clamping mandrel (202) is clamped and provided with a worm wheel (6) through the inner circle clamping structure, an ejector rod (205) is connected between the output end of the clamping oil cylinder (204) and the rotating main shaft (203), and a disc spring (206) is arranged on the outer side above the ejector rod (205);

the detection mechanism (5) comprises a driving side (7) and a braking side (8), the driving side (7) and the braking side (8) are respectively installed on the right sliding table feeding mechanism (4) and the left sliding table feeding mechanism (2), and the driving side (7) comprises a servo motor (701), a torque sensor (702), a driving worm tool spindle (703), a quick tool changing mechanism I (704) and a tool automatic clamping mechanism I (705); the braking side (8) comprises a second cutter automatic clamping mechanism (801), a second quick cutter changing mechanism (802), a worm (803) of a braking side cutter, a servo motor (804) for cutter setting, an origin sensor (805), an encoder (806), a magnetic powder brake (807), an electromagnetic clutch (808) and a driving shaft; worm cutter main shaft (703) are passed through shaft coupling direct drive by servo motor (701) and are connected, torque sensor (702) set up in the middle of servo motor (701) and worm cutter main shaft (703), the opposite side of drive worm cutter main shaft (703) in proper order with quick tool changing mechanism (704) and the installation of cutter automatic clamping mechanism (705), initial point sensor (805) and encoder (806) are installed in proper order on the drive shaft, the opposite side and the braking side cutter worm (803) fixed connection of drive shaft, servo motor (804) and drive shaft pass through the hold-in range and are connected for the tool setting.

2. The automobile steering system worm gear running-in device according to claim 1, characterized in that the hydraulic clamping mandrel (202) clamps the worm gear (6) through the belleville spring (206), and when the hydraulic clamping mandrel (202) loosens the worm gear (6), the clamping oil cylinder (204) supplies oil through a hydraulic system to drive the ejector rod (205) to move upwards in a single direction.

3. The automobile steering system worm gear running-in equipment according to claim 1, characterized in that the equipment body (1) is further provided with positioning pins for fixing the left sliding table feeding mechanism (2) and the right sliding table feeding mechanism (4).

4. The automotive steering system worm gear running-in apparatus according to claim 1, characterized in that the positioning mechanism (3) is installed between the driving side (7) and the braking side (8) and is in meshed connection with the driving worm tool spindle (703) and the braking side tool worm (803).

5. The automobile steering system worm gear running-in equipment according to claim 1 is characterized in that the equipment body (1) is further provided with a front-back sliding structure connected with the positioning mechanism (3), and the front-back sliding structure comprises a driving cylinder.

6. The automotive steering system worm gear running-in apparatus according to claim 1, characterized in that the magnetic particle brake (807) is directly connected to the drive shaft of the braking side (8).

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