Self-centering device for gear M value measurement

Abstract

The utility model relates to gear M value measurement technical field especially a kind of self-centering device for gear M value measurement.This self-centering device for gear M value measurement, including base, motor, carousel and electric clamp jaw, installation hole is set up in the middle of base, carousel is installed in installation hole by bearing, electric clamp jaw is set up in one side of carousel, its drive end is connected with a pair of clamping jaw, symmetric guide bevel is set up on the opposite inner side of a pair of clamping jaw, forms V-shaped positioning mouth, guide bevel is contacted with gear outer circle when clamping gear, to make gear center automatic alignment to the rotation center of carousel, motor is installed in the other side of carousel by motor base, and its output shaft is connected with driving pulley that drives carousel rotation.The utility model uses electric clamp jaw and carousel, realizes the automatic centering of gear measurement, can significantly improve the measurement efficiency and accuracy of gear M value, saves time.

Description

Technical Field

[0001] This utility model relates to the field of gear M-value measurement technology, and in particular to a self-calibration center device for gear M-value measurement. Background Technology

[0002] While existing measuring instruments can automatically locate the tooth width center, the tooth alignment (aligning the probe with the tooth groove center) and anti-interference confirmation steps rely on manual calibration, which severely restricts measurement efficiency. Human operation introduces subjective and fatigue errors, making it difficult to effectively guarantee the accuracy and repeatability of measurement results. Furthermore, it is difficult to quickly and automatically rotate the gear to measure the M value at different angles, further limiting measurement efficiency and comprehensiveness. Utility Model Content

[0003] The technical problem to be solved by this utility model is: in order to solve the problems of low gear efficiency, poor accuracy and inability to automatically rotate and measure the gear in the prior art mentioned above, a self-calibration centering device for measuring gear M value is provided.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a self-calibrating centering device for measuring the M value of gears, including a base, a motor, a turntable, and electric grippers. The base has a mounting hole in the middle, and the turntable is mounted in the mounting hole through a bearing. The electric grippers are set on one side of the turntable, and a pair of grippers are connected to their driving end. Symmetrical guide slopes are provided on the opposite inner surfaces of the pair of grippers to form a V-shaped positioning opening. When the gear is clamped, the guide slopes contact the outer circle of the gear so that the center of the gear is automatically aligned with the rotation center of the turntable. The motor is mounted on the other side of the turntable through a motor mount, and a driving wheel that drives the turntable to rotate is connected to its output shaft.

[0005] The electric grippers, acting as a power source, provide precise and synchronized clamping drive. The V-shaped positioning ports on the pair of grippers utilize the principle of mechanical conjugation: when the grippers close, their symmetrical inclined surfaces contact the outer circle of the gear, generating a center-directing force that automatically guides the center of the gear's outer circle to the rotation centerline of the turntable. The motor drives the turntable via a rotating wheel, achieving automated rotational indexing at the measurement station. It can automatically and quickly rotate the gear to any required measurement angle without manual intervention, thereby improving measurement efficiency and data comprehensiveness.

[0006] According to one embodiment of the present invention, the base is an integrally molded structure, and the base is pre-set with mounting positions for electric grippers, motor seats and bearings.

[0007] The mounting positions of the electric gripper, motor base, and bearing are machined in one clamping operation, which ensures the relative position and coaxiality of these components.

[0008] According to one embodiment of the present invention, the outer surface of the moving wheel is provided with an anti-slip ring.

[0009] The anti-slip ring increases the coefficient of friction between the moving wheel and the side of the turntable, which can effectively prevent slippage between the moving wheel and the turntable at the moment of motor start-up, stop or reversal, ensuring the reliability and synchronization of power transmission, thereby ensuring the accuracy of the turntable rotation angle.

[0010] According to one embodiment of the present invention, the bearing is axially fixed by a bearing upper pressure ring and a bearing pressure ring.

[0011] The lower bearing pressure ring presses the bearing firmly onto the step of the base from below, while the upper bearing pressure ring presses against the upper end face of the bearing from above. The bearing is then connected to the base by screws, eliminating axial clearance and ensuring that it is firmly fixed in the axial direction. This ensures that the turntable will not move up and down during rotation and maintains the axial stability of the measurement reference surface.

[0012] According to one embodiment of the present invention, the motor base has a gate-shaped structure, the motor is mounted on the upper surface of the motor base, and its output shaft passes through the top plate of the motor base and is connected to the drive wheel.

[0013] The portal frame structure supports the motor, providing sufficient operating space for the transmission pair between the drive wheel and the turntable below, thus avoiding structural interference.

[0014] According to one embodiment of the present invention, the driving wheel is a gear, a synchronous belt pulley, or a friction wheel.

[0015] Gear drives can achieve zero-slip transmission and have good rigidity; synchronous belt pulley drives allow for a certain center distance adjustment and have the effects of vibration reduction and noise reduction; friction wheel drives have the simplest structure, low cost, and can slip under overload conditions to provide protection.

[0016] According to one embodiment of the present invention, the center of the turntable is provided with a through hole for accommodating the probe of a measuring sensor.

[0017] The measuring probe's probe rod can pass directly into the gear's inner hole from below through the center of the turntable to measure the internal tooth profile, which can solve the problem of interference between the probe path and the workpiece when measuring internal gear rings.

[0018] The beneficial effects of this utility model are:

[0019] The gripper design with a V-shaped positioning port, when the gripper is closed, the force exerted by its symmetrical inclined surface on the outer circle of the gear will accurately guide the center of the gear to the symmetrical center line of the two grippers, thus achieving gear alignment; and within a certain range, it can adapt to gears of different diameters without changing the clamps, only requiring program control of the electric gripper's stroke.

[0020] The integrated base integrates the bearing mounting position, electric gripper mounting position, and motor mount mounting position into a single part and completes the machining in one clamping operation, ensuring the coaxiality of the turntable rotation center and the gripper center alignment center.

[0021] The entire alignment and measurement process is completed automatically by the equipment, and the measurement results no longer fluctuate due to the operator's skill level, work fatigue or emotional state, making the measurement data real, reliable and highly comparable;

[0022] The motor, drive wheel, and turntable constitute a high-precision indexing rotary table. The turntable can be precisely rotated at any angle through the equipment program, and the next measurement can be performed automatically. This allows the measurement of the M value of the gear's full circumference or multiple specific angles to be completed in one clamping, which is highly efficient, provides comprehensive data, and can better evaluate the overall machining quality of the gear. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model.

[0025] Figure 2 This is an exploded view of this utility model.

[0026] Figure 3 This is a schematic diagram of the connection structure of the motor, the driving wheel, and the anti-slip ring in this utility model.

[0027] In the diagram: 1. Electric gripper; 2. Gripper; 21. Guide ramp; 3. Turntable; 4. Lower bearing pressure ring; 5. Base; 6. Bearing; 7. Upper bearing pressure ring; 8. Anti-slip ring; 9. Drive wheel; 10. Motor base; 11. Motor; 51. Mounting hole. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0029] like Figures 1-3As shown, a self-calibrating centering device for measuring the M value of a gear includes a base 5, a motor 11, a turntable 3, and an electric gripper 1. The base 5 has a mounting hole 51 in the middle. The turntable 3 is mounted in the mounting hole 51 through a bearing 6. The electric gripper 1 is located on one side of the turntable 3, and its driving end is connected to a pair of grippers 2 for driving the pair of grippers 2 to move synchronously towards or away from each other. Symmetrical guide slopes 21 are provided on the opposite inner surfaces of the pair of grippers 2 to form a V-shaped positioning opening. When the gear is gripped, the guide slopes 21 contact the outer circle of the gear so that the center of the gear is automatically aligned with the rotation center of the turntable 3. The motor 11 is mounted on the other side of the turntable 3 through a motor base 10, and its output shaft is connected to a driving wheel 9 that drives the turntable 3 to rotate.

[0030] The base 5 is a one-piece molded structure. It has pre-set mounting positions for the electric gripper 1, motor base 10, and bearing 6. The bearing 6 mounting position has a step, and the bearing 6 is axially fixed by an upper bearing pressure ring 7 and a lower bearing pressure ring 4. The lower bearing pressure ring 4 presses the bearing 6 firmly against the step of the bearing 6 mounting position from below, while the upper bearing pressure ring 7 presses against the upper end face of the bearing 6 from above. It is then connected to the base 5 by screws, eliminating axial play in the bearing 6 and firmly fixing it axially. This ensures that the turntable 3 does not move up and down during rotation, maintaining the axial stability of the measurement reference surface.

[0031] like Figure 1 and Figure 3 As shown, the motor base 10 has a portal frame structure. The motor 11 is mounted on the upper surface of the motor base 10, and its output shaft passes through the top plate of the motor base 10 and connects to the drive wheel 9. An anti-slip ring 8 is provided on the outer surface of the drive wheel 9. The anti-slip ring 8 increases the coefficient of friction between the drive wheel 9 and the side of the turntable 3, effectively preventing slippage between the drive wheel 9 and the turntable 3 at the moment the motor 11 starts, stops, or reverses, ensuring the reliability and synchronization of power transmission, thereby guaranteeing the accuracy of the turntable 3's rotation angle. The drive wheel 9 can be a gear, a synchronous belt pulley, or a friction wheel. A through hole for accommodating the probe of a measuring sensor is provided in the center of the turntable 3.

[0032] The device uses an integrally molded base 5 as its operating platform. The electric gripper 1 drives a pair of grippers 2 with V-shaped positioning holes to hold the gear and automatically correct its outer circle center to the rotation center of the turntable 3 using geometric principles. The motor 11 drives the turntable 3 to rotate through the moving wheel 9. The turntable 3 is mounted on the base 5 through the bearing 6 and is responsible for accurately rotating the gear to multiple predetermined angles. The through hole in the center of the turntable 3 provides a channel for the probe of the measuring sensor, enabling it to measure gears, especially internal gear rings.

[0033] The specific steps of the device's workflow are as follows:

[0034] The operator or robot places the gear to be measured on the center area of ​​the upper surface of the turntable 3. At this time, the gripper 2 is in the open state. The system starts, the electric gripper 1 works, and drives a pair of grippers 2 to move synchronously towards each other. The guide slope 21 at the front end of the gripper 2 first contacts the outer circle of the gear. During the closing process, the slope generates a guiding force on the gear, automatically correcting the center of the outer circle of the gear to the rotation center line of the turntable 3, and finally clamping and fixing it. This process does not require any manual intervention and automatically completes the gear alignment and centering.

[0035] The two probes of the measuring sensor (moving back and forth) rise through the through hole in the center of the turntable 3 to perform the first M-value measurement on the gear that has been aligned. After the measurement is completed, the two probes move closer to the center. The motor 11 receives the instruction and starts to rotate, driving the turntable 3 to rotate precisely by a preset angle through the drive wheel 9 on its output shaft. The gear rotates with the turntable 3. Before the turntable 3 rotates, the electric gripper 1 will release slightly, and then clamp again after rotating to the correct position to ensure that the gear is always in the best alignment state. The probes measure again to obtain the M-value data at the new angle. The above steps are repeated until the gear rotates one full turn or all the preset angle measurements are completed.

[0036] After all measurements are completed, the electric gripper 1 drives the gripper 2 to open, the operator or robot arm removes the gear, the system resets, and waits for the next measurement cycle.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A self-calibrating centering device for measuring the M-value of gears, characterized in that: The device includes a base (5), a motor (11), a turntable (3), and an electric gripper (1). The base (5) has a mounting hole (51) in the middle. The turntable (3) is installed in the mounting hole (51) through a bearing (6). The electric gripper (1) is located on one side of the turntable (3). Its driving end is connected to a pair of grippers (2). Symmetrical guide slopes (21) are provided on the opposite inner surfaces of the pair of grippers (2) to form a V-shaped positioning port. The guide slopes (21) contact the outer circle of the gear when clamping the gear so that the center of the gear is automatically aligned with the rotation center of the turntable (3). The motor (11) is installed on the other side of the turntable (3) through a motor seat (10). Its output shaft is connected to a driving wheel (9) that drives the turntable (3) to rotate.

2. The self-calibrating centering device for measuring gear M-value according to claim 1, characterized in that: The base (5) is an integrally formed structure, and the base (5) has a pre-set mounting position for the electric gripper (1), the motor seat (10) and the bearing (6).

3. The self-calibrating centering device for measuring gear M-value according to claim 1, characterized in that: The outer surface of the moving wheel (9) is provided with an anti-slip ring (8).

4. The self-calibrating centering device for measuring gear M-value according to claim 1, characterized in that: The bearing (6) is axially fixed by the upper bearing pressure ring (4) and the lower bearing pressure ring (7).

5. The self-calibrating centering device for measuring gear M-value according to claim 1, characterized in that: The motor base (10) has a gate-shaped structure. The motor (11) is mounted on the upper surface of the motor base (10), and its output shaft passes through the top plate of the motor base (10) and is connected to the drive wheel (9).

6. The self-calibrating centering device for measuring gear M-value according to claim 5, characterized in that: The driving wheel (9) is a gear, a synchronous belt pulley, or a friction wheel.

7. The self-calibrating centering device for measuring gear M-value according to claim 1, characterized in that: The turntable (3) has a through hole at its center to accommodate the probe of the measuring sensor.

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