Internal tooth powerful gear honing machine machining tooth direction adjusting method and device and gear honing machine

Abstract

The invention discloses an internal tooth powerful gear honing machine machining tooth direction adjusting method and device and a gear honing machine. The adjusting method comprises the steps that the tooth direction error and the taper error of a honing wheel of the gear honing machine and a to-be-machined gear workpiece are determined, a honing wheel frame is rotated to rotate around a tool rest stand column, and the meshing angle of the honing wheel and the gear workpiece is changed for tooth direction compensation; the tool rest stand column is rotated around the machine body of the gear honing machine, the angle of the tool rest stand column is changed to adjust the angle of the gear workpiece, and taper compensation is conducted; and finally finishing the adjustment of the machining tooth direction of the gear honing machine. By controlling the rotation amount of the honing wheel frame and the tool rest stand column, the tooth direction error and the taper error between the gear workpiece and the honing wheel are compensated, the gear workpieces in different tooth directions are machined under the condition that the honing wheel is not trimmed, the material cost and the time cost are reduced, and the machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of gear processing, and in particular to a method for adjusting tooth direction of an internal gear power honing machine, an adjusting device and a honing machine. Background Art

[0002] With the vigorous development of new energy vehicles, the speed of gears in gearboxes is getting higher and higher. While the precision of gears in gearboxes is being improved, the requirements for the surface texture of gears are also increasing. The process of high-power gear honing is also being gradually promoted.

[0003] The internal gear honing wheel power honing machine uses a dressing wheel to dress the honing wheel into the required shape, and then uses the dressed honing wheel to hone the gear to meet the process requirements. The shape of the tooth profile of the processed gear is often a complete copy of the shape of the dressing wheel. In order to meet the requirements of the special shape of the gear, the dressing wheel is basically used. Due to the special material of the dressing wheel, it often costs a lot of material cost and time cost, and also limits the processing range of the honing machine. Summary of the invention

[0004] Technical purpose: In view of the shortcomings of existing honing machines in processing gear workpieces, the present invention discloses a tooth direction adjustment method, an adjustment device and a honing machine for internal gear high-power honing machines that adjust the tooth direction according to the gear workpiece.

[0005] Technical solution: To achieve the above technical objectives, the present invention adopts the following technical solution:

[0006] A method for adjusting the tooth direction of an internal gear high-power honing machine is provided. The method determines the theoretical tooth direction angle and taper value of the dressing wheel design and the tooth direction error and taper error of the gear workpiece to be processed. The honing wheel frame is rotated around the tool holder column to change the meshing angle between the honing wheel and the gear workpiece to perform tooth direction compensation. The tool holder column is rotated around the bed of the honing machine to change the angle of the tool holder column to adjust the angle of the gear workpiece and perform taper compensation. Finally, the adjustment of the tooth direction of the honing machine is completed.

[0007] Preferably, the present invention calculates the rotation amount of the honing wheel frame and the tool holder column according to the tooth guide error and taper error of the honing wheel and the gear workpiece:

[0008] Calculate the number of teeth on the gear workpiece: Z 工 ; Pressure angle α 工 ; Tooth direction error: δ 齿向 ; Tooth width: B 工 ; Helix angle: β 工 ; Drum shape: δ; Taper error: Δ; Number of teeth of honing wheel Z 刀 ; Helix angle: β 刀 ; The rotation amount of the honing wheel frame is: The counterclockwise rotation direction of the honing wheel frame is the positive direction; the rotation amount of the tool holder column The side where the tailstock of the gear honing machine is located is the positive direction; where ∑ is the axial angle between the workpiece and the honing wheel.

[0009] The present invention discloses a gear honing machine tooth direction adjustment device, which is used to realize the above-mentioned gear direction adjustment method, and comprises a tool holder column which is arranged on the gear honing machine and is rotatably matched with the machine bed in the direction toward the tailstock of the gear honing machine, and a honing wheel frame which is rotatably matched with the tool holder column with the axis of the tool holder column as the rotating axis, and the honing wheel is installed in the honing wheel frame; a driving mechanism for controlling the rotation angle of the tool holder column is arranged on the gear honing machine.

[0010] Preferably, the driving mechanism of the present invention includes an arc-shaped guide slide rail coaxially arranged with the rotation center axis of the tool holder column, and a connecting driving member whose end is connected to the tool holder column and cooperates with the guide slide rail, and the other end of the connecting driving member facing away from the tool holder column is connected to the driving end of the driving assembly, and the connecting driving member is driven to move by the driving assembly, thereby driving the tool holder column to rotate around the rotation center.

[0011] Preferably, the drive assembly of the present invention includes a screw rod and a screw nut, the screw rod is arranged along the tangential direction of the arc-shaped guide slide rail, and the connecting drive member is rotationally coordinated with the screw nut. When the screw rod rotates to drive the screw nut to move, the end of the connecting drive member moves synchronously to drive the tool holder column to rotate. The connecting drive member has the freedom of extension and contraction along the radial direction of the arc-shaped guide slide rail, and adapts to the distance change caused by the movement along the screw rod through the extension and contraction of the connecting drive member.

[0012] Preferably, the connecting drive member of the present invention comprises a linear bearing and a bearing bracket, the linear bearing is fixedly connected, and the other end is connected to the screw nut through the bearing bracket.

[0013] Preferably, the honing wheel frame and the tool holder column of the present invention are both driven to rotate by a motor, a temperature sensor is provided at the rotating shaft of the corresponding motor, and the temperature is detected by the temperature sensor to perform thermal deformation compensation.

[0014] The invention also discloses a gear honing machine, which uses the tooth direction adjusting device to perform honing processing on a gear workpiece.

[0015] Beneficial effects: The tooth direction adjustment method, adjustment device and gear honing machine disclosed in the present invention have the following beneficial effects:

[0016] 1. The present invention controls the rotation amount of the honing wheel frame and the tool holder column to compensate for the tooth direction error and taper error between the gear workpiece and the honing wheel, thereby realizing the processing of gear workpieces with different tooth directions without trimming the honing wheel, reducing material cost and time cost and improving processing efficiency.

[0017] 2. The adjustment device of the present invention guides the rotation of the tool rest column through an arc-shaped guiding slide rail, and drives the tool rest column to rotate through a driving mechanism and a connecting driving member, which can realize stable driving of the rotation of the tool rest column, accurately control the rotation angle and position, improve the compensation accuracy, and thus ensure the machining quality of gear workpieces.

[0018] 3. The present invention drives the connecting driving member to move through a lead screw and a lead screw nut, and then drives the tool rest column to rotate. The structure has high reliability and has a self-locking function, which can ensure the stability of the position of the tool rest column after rotation in place.

[0019] 4. The present invention is provided with a temperature sensor at the motor rotating shaft. By detecting the temperature of the rotating shaft through the temperature sensor, the rotation amount can be adjusted based on the influence of temperature, so as to ensure the compensation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0021] Figure 1 It is a position state diagram of the tool rest column and the honing wheel frame of the present invention on the honing machine;

[0022] Figure 2 It is a schematic diagram of the states of the tool rest column before and after rotation of the present invention;

[0023] Figure 3 It is a schematic diagram of the states of the honing wheel frame before and after rotation of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of the adjustment device of the present invention;

[0025] Figure 5 It is a schematic diagram of the state of the driving assembly after adjusting the rotation of the tool rest column of the present invention;

[0026] Among them, 1 - tool rest column, 2 - honing wheel frame, 3 - arc-shaped guiding slide rail, 4 - connecting driving member, 5 - lead screw, 6 - lead screw nut, 7 - linear bearing, 8 - bearing bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Now, reference will be made in detail to the embodiments of the present disclosure, one or more examples of which are set forth below. Each embodiment and example is provided by way of explanation of the device, composition, and materials of the present disclosure, and not by way of limitation. On the contrary, the following description provides a convenient illustration for implementing the exemplary embodiments of the present disclosure. In fact, it will be apparent to those skilled in the art that various modifications and variations can be made in the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0028] The present invention discloses a method for adjusting the tooth direction in the machining of an internal tooth powerful honing machine. First, determine the theoretical tooth direction angle and taper value of the dressing wheel design, as well as the tooth direction error and taper error of the gear workpiece to be machined. Through rotating the honing wheel frame around the tool rest column, change the meshing angle between the honing wheel and the gear workpiece for tooth direction compensation. Rotate the tool rest column around the bed of the honing machine to change the angle of the tool rest column and adjust the angle of the gear workpiece for taper compensation. Finally, complete the adjustment of the tooth direction in the honing machine machining.

[0029] The present invention calculates the rotation amounts of the honing wheel frame and the tool rest column according to the tooth direction error and taper error between the honing wheel and the gear workpiece:

[0030] Through measurement and calculation, the number of teeth of the gear workpiece: Z 工 ; Pressure angle α 工 ; Tooth direction error is δ 齿向 ; Tooth width: B 工 ; Helix angle: β 工 ; Drum amount: δ; Taper error: Δ; Number of teeth Z of the honing wheel 刀 ; Helix angle: β 刀 ; The rotation amount of the honing wheel frame is: Taking the counterclockwise rotation direction of the honing wheel frame as the positive direction; the rotation amount of the tool rest column Taking the side where the tailstock of the honing machine is located as the positive direction; where ∑ is the shaft intersection angle between the workpiece and the honing wheel.

[0031] As Figures 1-5 shown, the present invention discloses a device for adjusting the tooth direction in the honing machine machining, which is used to implement the above tooth direction adjustment method. It includes a tool rest column 1 arranged on the honing machine and rotatably matched with the machine tool bed along the direction towards the tailstock of the honing machine, and a honing wheel frame 2 rotatably matched with the tool rest column 1 with the axis of the tool rest column 1 as the rotation axis. The honing wheel is installed in the honing wheel frame 2; a driving mechanism for controlling the rotation angle of the tool rest column is arranged on the honing machine.

[0032] Taking the rotation axis of the tool rest column 1 as the B axis and the rotation axis of the honing wheel frame 2 as the A axis. When the tool rest column 1 rotates, the position of the honing wheel frame 2 will also move synchronously under the drive of the tool rest column 1. Therefore, the honing wheel frame 2 can be directly driven to rotate by a motor. However, the rotation direction of the tool rest column 1 is towards the tailstock of the honing machine. To achieve stable rotation drive of the tool rest column 1 in a relatively small space, in the embodiment of the present invention, as Figure 4 and Figure 5As shown in the figure, the drive mechanism of the present invention includes an arc-shaped guide rail 3 coaxially arranged with the rotation center axis of the tool rest column 1, and a connecting drive member 4 whose end is connected to the tool rest column 1 and is connected and matched with the guide rail. The other end of the connecting drive member 4 away from the tool rest column 1 is connected to the drive end of the drive assembly. The drive assembly drives the connecting drive member 4 to move, driving the tool rest column 1 to rotate around the rotation center.

[0033] The drive assembly of the present invention includes a lead screw 5 and a lead screw nut 6. The lead screw 5 is arranged along the tangential direction of the arc-shaped guide rail 3. The connecting drive member 4 is rotationally matched with the lead screw nut 6. When the lead screw 5 rotates to drive the lead screw nut 6 to move, the end of the connecting drive member 4 moves synchronously to drive the tool rest column 1 to rotate. The connecting drive member 4 has a telescopic freedom degree in the radial direction of the arc-shaped guide rail 3, and the distance change caused by moving along the lead screw 5 is adapted through the telescopic movement of the connecting drive member 4.

[0034] Specifically, the connecting drive member 4 of the present invention includes a linear bearing 7 and a bearing bracket 8. One end of the linear bearing 7 is fixedly connected to the tool rest column 1, and the other end is connected to the lead screw nut 6 through the bearing bracket 8. The lead screw 5 can be driven by a motor. The rotation of the tool rest column 1 is realized through the position change of the lead screw nut 6, reducing the torque required for the motor, and a small motor can be used to complete the purpose of rotational drive, reducing the occupied space of the equipment. Moreover, the lead screw structure can be self-locked, improving the reliability of the structure and avoiding affecting the machining effect of gear workpieces due to the change of the rotation angle.

[0035] Both the honing wheel frame 2 and the tool rest column 1 of the present invention are driven to rotate by motors. Temperature sensors are arranged at the rotating shafts of the corresponding motors. The temperature is detected by the temperature sensors for thermal deformation compensation, thereby further improving the compensation accuracy and realizing the precise machining of gear workpieces with different tooth directions.

[0036] Before the formal machining, the compensation accuracy can also be verified by artificially introducing errors, improving the reliability of the tooth direction adjustment.

[0037] For example, adjust the B axis to have a taper of 0.01 mm / m with the gear workpiece to be machined. First, perform non-compensated machining on the gear workpiece, and then measure the FTAE (the maximum deviation value between the actual profile and the ideal straight tooth line, reflecting the straightness error of the tooth direction). Then, based on the laser interferometer, measure the actual position of the B axis, and input the compensation coefficient on the machine tool according to the rotation amount confirmed by the taper error. Link the A axis through the Cross-Coupled Control algorithm to compensate for the geometric coupling error generated by the rotation of the B axis. Then, perform gear workpiece machining again, measure the FTAE again, and verify whether the taper compensation accuracy meets the machining requirements.

[0038] The present invention also discloses a honing machine, which uses the above-mentioned tooth direction adjusting device to perform honing processing on gear workpieces. By coordinately controlling the A-axis and the B-axis, the taper error and the tooth direction error during gear processing are compensated, so as to achieve precise processing of gear workpieces with different tooth directions, and there is no need to frequently grind and adjust the dressing wheel, thereby saving time and reducing the material cost required for processing.

Claims

1. A method for adjusting the tooth direction in the machining of internal gear power honing machines, characterized in that, First, determine the theoretical tooth direction angle and taper value of the dressing wheel design and the tooth direction error and taper error of the gear workpiece to be processed. Rotate the honing wheel frame around the tool post column to change the meshing angle between the honing wheel and the gear workpiece to perform tooth direction compensation. Rotate the tool post column around the bed of the gear honing machine to change the angle of the tool post column to adjust the angle of the gear workpiece and perform taper compensation. Finally, the adjustment of the tooth direction of the gear honing machine is completed.

2. A method for adjusting the tooth direction in the machining of an internal gear high-precision honing machine according to claim 1, characterized in that, The rotation amount of the honing wheel frame and tool post column is calculated based on the tooth guide error and taper error of the honing wheel and gear workpiece: Calculate the number of teeth of the gear workpiece: Z 工 ; Pressure angle α 工 ; Tooth direction error: δ 齿向 ; Tooth width: B 工 ; Helix angle: β 工 ; Barreling amount: δ; Taper error: Δ; Number of teeth of the honing wheel Z 刀 ; Helix angle: β 刀 ; The rotation amount of the honing wheel holder is: Taking the counterclockwise rotation direction of the honing wheel frame as the positive direction; the rotation amount of the tool rest column Taking the side where the tailstock of the honing machine is located as the positive direction; where ∑ is the shaft intersection angle between the workpiece and the honing wheel.

3. A tooth direction adjustment device for a honing machine, which is used to implement the tooth direction adjustment method described in any one of claims 1-2, characterized in that, The invention comprises a tool post column (1) which is arranged on a gear honing machine and is rotatably matched with a machine bed in a direction toward the tailstock of the gear honing machine, and a honing wheel frame (2) which is rotatably matched with the tool post column (1) with the axis of the tool post column (1) as a rotation axis, wherein a honing wheel is installed in the honing wheel frame (2); and a driving mechanism for controlling the rotation angle of the tool post column is arranged on the gear honing machine.

4. A tooth direction adjustment device for a honing machine according to claim 1, characterized in that, The driving mechanism comprises an arc-shaped guide rail (3) coaxially arranged with the rotation center axis of the tool holder column (1), and a connecting driving member (4) whose end is connected to the tool holder column (1) and cooperates with the guide rail. The other end of the connecting driving member (4) facing away from the tool holder column (1) is connected to the driving end of the driving component. The connecting driving member (4) is driven to move by the driving component, thereby driving the tool holder column (1) to rotate around the rotation center.

5. The tooth direction adjustment device for a honing machine according to claim 4, characterized in that, The driving assembly comprises a screw rod (5) and a screw rod nut (6), wherein the screw rod (5) is arranged along the tangential direction of the arc-shaped guide rail (3), and the connecting driving member (4) and the screw rod nut (6) are rotationally matched. When the screw rod (5) rotates to drive the screw rod nut (6) to move, the end of the connecting driving member (4) moves synchronously to drive the tool holder column (1) to rotate. The connecting driving member (4) has a telescopic freedom along the radial direction of the arc-shaped guide rail (3), and adapts to the distance change caused by the movement along the screw rod (5) through the telescopic connection driving member (4).

6. The tooth direction adjustment device for a honing machine according to claim 5, characterized in that, The connecting drive member (4) comprises a linear bearing (7) and a bearing bracket (8); one end of the linear bearing (70) is fixedly connected to the tool holder column (1), and the other end is connected to the screw nut (6) through the bearing bracket (8).

7. A tooth helix angle adjusting device for a honing machine according to claim 3, characterized in that, The honing wheel frame (2) and the tool holder column (1) are both driven to rotate by a motor, and a temperature sensor is arranged at the rotating shaft of the corresponding motor, and the temperature is detected by the temperature sensor to perform thermal deformation compensation.

8. A honing machine, characterized in that, The gear workpiece is honed using the tooth direction adjustment device as described in any one of claims 3 to 7.

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