A dynamic deviation type dressing method for dressing a wheel of a gear tooth cutter grinding wheel
By using a single circular arc dressing wheel with normal dynamic yaw dressing and dynamic frequency conversion yaw compensation, the problems of short service life and reduced precision of dressing wheels have been solved, achieving high-precision dressing and stability of gear cutting tool grinding wheels and extending the service life of dressing wheels.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGYIN SAITE PRECISION TOOL
- Filing Date
- 2024-09-12
- Publication Date
- 2026-05-19
AI Technical Summary
In existing tooth cutting tool grinding wheel dressing methods, the dressing wheel has a short service life, reduced accuracy, and unstable dressing accuracy. In particular, it is difficult to achieve precise circumferential positioning after the equipment is powered off or shut down, which affects the subsequent dressing effect.
A single circular arc dressing wheel is used for normal dynamic yaw dressing. By controlling the change of the yaw angle at the contact point between the arc head of the dressing wheel and the grinding wheel, the dynamic yaw cycle is realized. Combined with the dynamic frequency conversion yaw compensation method, wear detection and online wear compensation are performed to ensure uniform wear of the dressing wheel and high-precision dressing.
It improves the service life of dressing wheels and the dressing accuracy of gear cutting wheels, ensures the stability and precision of the dressing process, extends the number of uses of dressing wheels, and reduces the impact of power outages.
Smart Images
Figure CN119077626B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of grinding wheel dressing technology, specifically to a method for dressing a tooth cutting tool grinding wheel with dynamic oscillation of the dressing wheel normal. Background Technology
[0002] A gear-turning grinding wheel is a tool used for grinding gear-turning cutters; it is a type of generating grinding wheel. To improve the accuracy and grinding performance of generating grinding wheels, they need to be dressed. Currently, there are two main types of profile dressing for gear-turning generating grinding wheels: diamond dressing pen contour dressing and diamond dressing wheel form dressing. Diamond dressing pen dressing is similar to turning, with the dressing pen remaining stationary. However, due to the frequent contact between the dressing pen tip and the grinding wheel, the diamond wears quickly, resulting in a short dressing pen lifespan and low grinding wheel profile dressing accuracy. Therefore, it is not widely used in form grinding. Diamond dressing wheel dressing is similar to external circular infeed grinding, where both the dressing wheel and the grinding wheel rotate at high speed. Because the dressing wheel has more diamond particles on its surface, its wear is relatively slower compared to a dressing pen, making it widely used in form grinding. Although the diamond particles on the surface of the dressing wheel wear very slowly, the accuracy of the dressing wheel profile gradually decreases during the dressing process, resulting in a gradual decline in the accuracy of the dressed grinding wheel profile. This, in turn, affects the accuracy of the ground parts and the stability of the grinding performance. Therefore, the traditional ceramic bonded diamond dressing wheel forming and dressing method has its obvious shortcomings and needs further improvement.
[0003] In the prior art, Chinese invention patent CN102765056B discloses a dresser for CBN grinding wheels in the inner ring groove of bearings, which uses a diamond disc to rotate and oscillate to dress the CBN grinding wheel profile. However, because the diamond disc, acting as the dressing wheel, always contacts the grinding wheel with its apex during the dressing process, the accuracy of the diamond disc decreases rapidly after a period of use, thus greatly reducing the service life of the diamond disc.
[0004] To reduce the accuracy reduction caused by rapid wear of dressing wheels, existing technology has also disclosed an invention patent with authorization announcement number CN109664201B entitled "A Grinding Wheel Forming and Dressing Method". In the rough dressing stage, a first dressing area selected from the old area that has been used by the dressing wheel is used as the working area of the dressing wheel to perform rough dressing of the grinding wheel to be dressed; in the fine dressing stage, a second dressing area selected from the new area that has not been used by the dressing wheel is used as the working area of the dressing wheel. The new surface on the circumference of the dressing wheel helps to ensure and improve the dressing accuracy of the grinding wheel profile to be dressed. However, this grinding wheel forming and dressing method has the following shortcomings: the dressing wheel only rotates once during its lifespan. After one rotation, the dressing wheel has basically lost its accuracy and is no longer usable. Therefore, the actual number of times the dressing wheel can be used is greatly limited, and its service life is not high. In addition, due to the dynamic changes between the first dressing zone and the second dressing zone on the dressing wheel, if there is a power outage or the equipment is turned off and then restarted, it will be difficult for the dressing wheel to achieve accurate circumferential positioning during the next dressing, thus affecting the subsequent dressing accuracy. Summary of the Invention
[0005] To address the aforementioned problems, this invention proposes a dynamic yaw-type dressing method for dressing turning gear cutting tools, aiming to improve the service life of a single-circular-arc dressing wheel and the dressing accuracy of the gear cutting tool grinding wheel. The specific technical solution is as follows:
[0006] A dynamic yaw dressing method for dressing a tooth-cutting grinding wheel is disclosed. This method employs a single-arc dressing wheel to dress the profile of the grinding wheel. During dressing, the single-arc dressing wheel is driven to rotate around its own axis, causing the single-arc head of the dressing wheel to contact the surface of the grinding wheel to be dressed, thus forming a dressing contact point between the single-arc dressing wheel and the grinding wheel. During the dressing process, the center of the arc head of the single-arc dressing wheel located at the dressing contact point is controlled to align with the normal direction of the grinding wheel. The dressing wheel moves equidistantly in one direction while simultaneously controlling the single circular arc dressing wheel to oscillate around the center of the arc head at the dressing contact point. This causes the plane of rotation formed by the single circular arc dressing wheel as it rotates around its own axis, passing through the center of the arc head, to form a dynamically changing yaw angle between the plane of rotation and the normal plane on the profile of the cutting tool grinding wheel located at the dressing contact point. During the dressing process, the yaw angle gradually decreases from the maximum positive yaw angle to zero yaw angle, and then gradually increases from zero yaw angle to the maximum reverse yaw angle.
[0007] In this invention, the process of the single circular arc dressing wheel gradually decreasing from the maximum positive yaw angle to zero yaw angle and then gradually increasing from zero yaw angle to the maximum reverse yaw angle forms a positive dynamic yaw cycle; through the aforementioned positive dynamic yaw cycle, the single circular arc dressing wheel completes one positive movement dressing of the tooth cutting tool grinding wheel.
[0008] As a further improvement of the present invention, after the center of the arc head of the single arc head of the single arc dressing wheel located at the dressing contact point moves equidistantly in one direction along the theoretical surface of the tooth cutting wheel, the center of the arc head of the single arc head of the single arc dressing wheel located at the dressing contact point is further controlled to move equidistantly in the opposite direction along the theoretical surface of the tooth cutting wheel. During the equidistant movement in the opposite direction, the yaw angle gradually decreases from the maximum reverse yaw angle to zero yaw angle, and then gradually increases from zero yaw angle to the maximum positive yaw angle.
[0009] In this invention, the process of the single circular arc dressing wheel gradually decreasing from the maximum reverse yaw angle to zero yaw angle and then gradually increasing from zero yaw angle to the maximum positive yaw angle forms a reverse dynamic yaw cycle; through the aforementioned reverse dynamic yaw cycle, the single circular arc dressing wheel completes one reverse movement dressing of the tooth cutting tool grinding wheel.
[0010] In this invention, the positive dynamic yaw cycle and the negative dynamic yaw cycle constitute a complete dynamic yaw cycle. Through the complete dynamic yaw cycle, the positive and negative movement combination dressing of the single arc dressing wheel on the tooth cutting wheel is completed.
[0011] Preferably, the dressing of the gear cutting wheel by the single circular arc dressing wheel is completed by continuously performing multiple complete dynamic oscillation cycles.
[0012] In a preferred embodiment of the present invention, during the process of the center of the arc head of the single arc head of the single arc dressing wheel, located at the dressing contact point, moving equidistantly in one direction along the theoretical surface of the tooth cutting wheel, or during the process of the center of the arc head of the single arc head of the single arc dressing wheel, located at the dressing contact point, moving equidistantly in the opposite direction along the theoretical surface of the tooth cutting wheel, the dressing of the tooth cutting wheel by the single arc dressing wheel is completed by continuously performing several complete dynamic oscillation cycles.
[0013] In this invention, the gear cutting wheel is mounted on a gear cutting wheel rotary drive shaft, which is mounted on a dual-axis CNC moving unit with two CNC moving axes. The single-arc dressing wheel is mounted on a grinding wheel dresser. The grinding wheel dresser has a CNC rotating axis and a dressing wheel rotary drive shaft mounted on the CNC rotating axis for driving the single-arc dressing wheel to rotate around its own axis. The single-arc dressing wheel is mounted on the dressing wheel rotary drive shaft of the grinding wheel dresser. Through the linkage of the two CNC moving axes of the dual-axis CNC moving unit and the one CNC rotating axis of the grinding wheel dresser, the arc head of the single-arc dressing wheel moves equidistantly along the theoretical profile of the gear cutting wheel and the normal yaw of the single-arc dressing wheel is simultaneously achieved.
[0014] Two CNC moving axes are used to realize the equidistant movement of the arc head of the single arc dressing wheel along the theoretical profile of the tooth cutting wheel; one CNC rotating axis is used to realize the normal yaw of the single arc dressing wheel.
[0015] Preferably, the single-arc trimming wheel oscillates at a constant speed around the center of the arc head at the trimming contact point to achieve the following during the trimming process: the sway angle gradually decreases from the maximum positive sway angle to zero sway angle, and then gradually increases from zero sway angle to the maximum negative sway angle; the single-arc trimming wheel oscillates at a constant speed around the center of the arc head at the trimming contact point to achieve the following during the trimming process: the sway angle gradually decreases from the maximum negative sway angle to zero sway angle, and then gradually increases from zero sway angle to the maximum positive sway angle.
[0016] As a further improvement, the present invention provides a dynamic yaw rate dressing method for a tooth-turning grinding wheel, which employs a dynamic frequency conversion yaw rate compensation method to periodically detect and compensate for uneven wear on the arc head of the single arc dressing wheel. The dynamic frequency conversion yaw rate compensation method is as follows:
[0017] (1) Wear detection: The dressing wheel is periodically inspected after a specified period of use to obtain the wear data of the arc head of the single arc dressing wheel;
[0018] (2) Wear area division: Based on the wear data of the arc head of the single arc dressing wheel, determine whether the wear uniformity of the arc head of the single arc dressing wheel is generally qualified; if not qualified, the wear area is divided into uniform wear area with relatively uniform wear, excessive wear area with relatively more wear than uniform wear area, and under-wear area with relatively less wear than uniform wear area.
[0019] (3) Online wear compensation: During the entire process of dressing the profile of the cutting tool grinding wheel using the arc head of the single arc dressing wheel, different yaw speeds are set for different wear areas on the single arc dressing wheel that participate in the dressing of the cutting tool grinding wheel profile; wherein, the uniformly worn area located on the arc head of the single arc dressing wheel uses the same yaw speed as before the wear detection when participating in the dressing of the cutting tool grinding wheel profile; the excessively worn area located on the arc head of the single arc dressing wheel uses a faster yaw speed than before the wear detection when participating in the dressing of the cutting tool grinding wheel profile, thereby reducing the contact time between the excessively worn area on the single arc dressing wheel and the cutting tool grinding wheel profile; the under-worn area located on the arc head of the single arc dressing wheel uses a slower yaw speed than before the wear detection when participating in the dressing of the cutting tool grinding wheel profile, thereby increasing the contact time between the under-worn area on the single arc dressing wheel and the cutting tool grinding wheel profile.
[0020] Preferably, the wear detection can be performed offline or online.
[0021] The offline testing involves removing the gear cutting wheel from the grinding wheel dresser and then taking it to a dedicated high-precision testing device to detect the wear of the arc head of the single arc dressing wheel. The online testing involves using a high-precision testing device that is either built into the CNC grinding machine or installed afterward on the CNC grinding machine to detect the wear of the arc head of the single arc dressing wheel without removing it.
[0022] Preferably, the tooth-turning grinding wheel is a ceramic-bonded diamond tooth-turning grinding wheel.
[0023] In this invention, the axial cross-section of the outer circle of the single arc dressing wheel has a V-shaped tip, and a single arc is provided at the tip of the V-shaped tip as the arc head.
[0024] The beneficial effects of this invention are:
[0025] First, the present invention provides a normal dynamic oscillation dressing method for dressing a tooth cutting tool grinding wheel. The single circular arc dressing wheel achieves oscillating contact between its arc head and the profile of the tooth cutting tool grinding wheel through normal oscillation. While achieving high-precision dressing of the grinding wheel to be dressed, it also achieves uniform wear on the surface of the arc head of the single circular arc dressing wheel itself, thereby improving the service life of the single circular arc dressing wheel.
[0026] Secondly, the present invention provides a method for dressing a tooth cutting tool grinding wheel with normal dynamic yaw rate. This method uses a dynamic frequency conversion yaw rate compensation method to periodically detect and compensate for uneven wear on the arc head of the single arc dressing wheel, which is then used for subsequent dressing of the tooth cutting tool grinding wheel. This method not only improves the wear uniformity of the arc head surface of the single arc dressing wheel, but also further improves the dressing accuracy of the tooth cutting tool grinding wheel. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the coordinate system of the cutting tool grinding wheel and the single circular arc dressing wheel used in the dynamic yaw dressing method of the dressing wheel of the present invention.
[0028] Figure 2 This is a diagram illustrating the trimming process.
[0029] In the diagram: 1. Gear cutting wheel; 2. Single arc dressing wheel; 3. Center of the arc head of the single arc dressing wheel; 4. Rotation plane of the single arc dressing wheel; 5. Normal plane.
[0030] In the diagram: α is the maximum positive yaw angle, β is the maximum negative yaw angle, and θ is the zero yaw angle (its yaw angle value is zero).
[0031] In the figure: X and Y are two CNC moving axes used to realize the relative movement of the center of the arc head of the single arc dressing wheel at equal distances along the theoretical profile of the cutting tool grinding wheel, and C is a CNC rotating axis used to realize the oscillation of the single arc dressing wheel around the center of the arc head. Detailed Implementation
[0032] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solutions of the present invention and should not be construed as limiting the scope of protection of the present invention. Example 1
[0033] like Figures 1 to 2The illustration shows an embodiment of the present invention for a dynamic yaw-type dressing method of a tooth-cutting grinding wheel. A single-arc dressing wheel is used to dress the profile of the tooth-cutting grinding wheel. During dressing, the single-arc dressing wheel is driven to rotate around its own axis, causing the single-arc head of the single-arc dressing wheel to contact the surface of the tooth-cutting grinding wheel to be dressed, thereby forming a dressing contact point between the single-arc dressing wheel and the tooth-cutting grinding wheel. During the dressing process, the center of the arc head of the single-arc dressing wheel located at the dressing contact point is controlled to move along the normal direction of the grinding wheel. The theoretical profile of the toothed grinding wheel moves equidistantly in one direction, while simultaneously controlling the single circular arc dressing wheel to oscillate around the center of the arc head at the dressing contact point. This causes the plane of rotation formed by the single circular arc dressing wheel as it rotates around its own axis, passing through the center of the arc head, to form a dynamically changing yaw angle between the normal plane on the toothed grinding wheel profile located at the dressing contact point. During the dressing process, the yaw angle gradually decreases from the maximum positive yaw angle to zero yaw angle, and then gradually increases from zero yaw angle to the maximum negative yaw angle.
[0034] In this embodiment, the process of the single circular arc dressing wheel gradually decreasing from the maximum positive yaw angle to zero yaw angle and then gradually increasing from zero yaw angle to the maximum reverse yaw angle forms a positive dynamic yaw cycle; through the aforementioned positive dynamic yaw cycle, the single circular arc dressing wheel completes one positive movement dressing of the tooth cutting tool grinding wheel.
[0035] As a further improvement to this embodiment, after the center of the arc head of the single arc head of the single arc dressing wheel located at the dressing contact point moves equidistantly in one direction along the theoretical surface of the tooth cutting wheel, the center of the arc head of the single arc head of the single arc dressing wheel located at the dressing contact point is also controlled to move equidistantly in the opposite direction along the theoretical surface of the tooth cutting wheel. During the equidistant movement in the opposite direction, the yaw angle gradually decreases from the maximum reverse yaw angle to zero yaw angle, and then gradually increases from zero yaw angle to the maximum positive yaw angle.
[0036] In this embodiment, the process of the single circular arc dressing wheel gradually decreasing from the maximum reverse yaw angle to zero yaw angle and then gradually increasing from zero yaw angle to the maximum positive yaw angle forms a reverse dynamic yaw cycle; through the aforementioned reverse dynamic yaw cycle, the single circular arc dressing wheel completes one reverse movement dressing of the tooth cutting tool grinding wheel.
[0037] In this embodiment, the positive dynamic yaw cycle and the negative dynamic yaw cycle constitute a complete dynamic yaw cycle. Through the complete dynamic yaw cycle, the positive and negative movement combination dressing of the single circular arc dressing wheel on the tooth cutting wheel is completed.
[0038] Preferably, the dressing of the gear cutting wheel by the single circular arc dressing wheel is completed by continuously performing multiple complete dynamic oscillation cycles.
[0039] In a preferred embodiment, during the process of the center of the arc head of the single arc dressing wheel at the dressing contact point moving equidistantly in one direction along the theoretical surface of the tooth cutting wheel, or during the process of the center of the arc head of the single arc dressing wheel at the dressing contact point moving equidistantly in the opposite direction along the theoretical surface of the tooth cutting wheel, the dressing of the tooth cutting wheel by the single arc dressing wheel is completed by continuously performing several complete dynamic oscillation cycles.
[0040] In this embodiment, the gear cutting wheel is mounted on a gear cutting wheel rotary drive shaft, which is mounted on a dual-axis CNC moving unit with two CNC moving axes. The single-arc dressing wheel is mounted on a grinding wheel dresser. The grinding wheel dresser has a CNC rotating axis and a dressing wheel rotary drive shaft mounted on the CNC rotating axis for driving the single-arc dressing wheel to rotate around its own axis. The single-arc dressing wheel is mounted on the dressing wheel rotary drive shaft of the grinding wheel dresser. Through the linkage of the two CNC moving axes of the dual-axis CNC moving unit and the one CNC rotating axis of the grinding wheel dresser, the arc head of the single-arc dressing wheel moves equidistantly along the theoretical profile of the gear cutting wheel and the normal yaw of the single-arc dressing wheel is simultaneously achieved.
[0041] Two CNC moving axes are used to realize the equidistant movement of the arc head of the single arc dressing wheel along the theoretical profile of the tooth cutting wheel; one CNC rotating axis is used to realize the normal yaw of the single arc dressing wheel.
[0042] Preferably, the single-arc trimming wheel oscillates at a constant speed around the center of the arc head at the trimming contact point to achieve the following during the trimming process: the sway angle gradually decreases from the maximum positive sway angle to zero sway angle, and then gradually increases from zero sway angle to the maximum negative sway angle; the single-arc trimming wheel oscillates at a constant speed around the center of the arc head at the trimming contact point to achieve the following during the trimming process: the sway angle gradually decreases from the maximum negative sway angle to zero sway angle, and then gradually increases from zero sway angle to the maximum positive sway angle.
[0043] As a further improvement, the dynamic yaw dressing method for a tooth-turning cutter grinding wheel in this embodiment also employs a dynamic frequency-controlled yaw compensation method to periodically detect and compensate for uneven wear on the arc head of the single-arc dressing wheel; the dynamic frequency-controlled yaw compensation method is as follows:
[0044] (1) Wear detection: The dressing wheel is periodically inspected after a specified period of use to obtain the wear data of the arc head of the single arc dressing wheel;
[0045] (2) Wear area division: Based on the wear data of the arc head of the single arc dressing wheel, determine whether the wear uniformity of the arc head of the single arc dressing wheel is generally qualified; if not qualified, the wear area is divided into uniform wear area with relatively uniform wear, excessive wear area with relatively more wear than uniform wear area, and under-wear area with relatively less wear than uniform wear area.
[0046] (3) Online wear compensation: During the entire process of dressing the profile of the cutting tool grinding wheel using the arc head of the single arc dressing wheel, different yaw speeds are set for different wear areas on the single arc dressing wheel that participate in the dressing of the cutting tool grinding wheel profile; wherein, the uniformly worn area located on the arc head of the single arc dressing wheel uses the same yaw speed as before the wear detection when participating in the dressing of the cutting tool grinding wheel profile; the excessively worn area located on the arc head of the single arc dressing wheel uses a faster yaw speed than before the wear detection when participating in the dressing of the cutting tool grinding wheel profile, thereby reducing the contact time between the excessively worn area on the single arc dressing wheel and the cutting tool grinding wheel profile; the under-worn area located on the arc head of the single arc dressing wheel uses a slower yaw speed than before the wear detection when participating in the dressing of the cutting tool grinding wheel profile, thereby increasing the contact time between the under-worn area on the single arc dressing wheel and the cutting tool grinding wheel profile.
[0047] Preferably, the wear detection can be performed offline or online.
[0048] The offline testing involves removing the gear cutting wheel from the grinding wheel dresser and then taking it to a dedicated high-precision testing device to detect the wear of the arc head of the single arc dressing wheel. The online testing involves using a high-precision testing device that is either built into the CNC grinding machine or installed afterward on the CNC grinding machine to detect the wear of the arc head of the single arc dressing wheel without removing it.
[0049] Preferably, the tooth-turning grinding wheel is a ceramic-bonded diamond tooth-turning grinding wheel.
[0050] In this embodiment, the axial cross-section of the outer circle of the single arc dressing wheel has a V-shaped tip, and a single arc is provided at the tip of the V-shaped tip as the arc head. Example 2
[0051] This example demonstrates the dressing of a gear-turning cutter wheel on a CNC spline grinder using a single circular arc dressing wheel with diamond abrasive. The gear-turning cutter wheel of this CNC spline grinder is mounted on a dual-axis CNC moving unit with two CNC moving axes. The wheel dresser of this CNC spline grinder has a CNC rotary axis and a dressing wheel rotation drive shaft mounted on the CNC rotary axis for driving the single circular arc dressing wheel to rotate around its own axis.
[0052] The single circular arc dressing wheel has an outer diameter of 100 mm and a trapezoidal profile. The radius of the top circular arc is R0.8 mm, and the two sides of the profile are circular segments. The linear velocity ratio between the single circular arc dressing wheel and the gear cutting wheel is set to 1:2. The feed speed of the single circular arc dressing wheel is 50 mm / min, and the feed amount is 0.01 mm.
[0053] According to the tooth-turning wheel dressing method of Example 1, the maximum positive yaw angle α at the dressing start end is set to 75°, the maximum negative yaw angle β at the dressing end end is set to 75°, and the zero yaw angle θ at the intermediate end between the start end and the end end is set to 0°; each dressing uses one complete dynamic yaw cycle.
[0054] After 1000 cycles of dressing, the dressing depth reaches 10mm, and the arc head of the single arc dressing wheel still maintains its arc shape of R0.8 mm.
[0055] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A method for dynamic yaw dressing of a tooth-cutting grinding wheel in the normal direction, characterized in that, A single-circular-arc dressing wheel is used to dress the profile of a turning cutter grinding wheel. During dressing, the single-circular-arc dressing wheel is driven to rotate around its own axis, causing the single-circular-arc head of the dressing wheel to contact the surface of the turning cutter grinding wheel to be dressed, thereby forming a dressing contact point between the single-circular-arc dressing wheel and the turning cutter grinding wheel. During the dressing process, the center of the single-circular-arc head of the single-circular-arc dressing wheel located at the dressing contact point is controlled to be equidistant from the theoretical profile of the turning cutter grinding wheel in one direction. The movement is controlled by oscillating the single arc dressing wheel around the center of the arc head at the dressing contact point. This causes the plane of rotation formed by the single arc dressing wheel around its own axis and the normal plane on the profile of the cutting tool grinding wheel located at the dressing contact point to form a dynamically changing yaw angle. During the dressing process, the yaw angle gradually decreases from the maximum positive yaw angle to zero yaw angle, and then gradually increases from zero yaw angle to the maximum reverse yaw angle. The gear cutting wheel is mounted on a gear cutting wheel rotary drive shaft, which is mounted on a dual-axis CNC moving unit with two CNC moving axes. The single circular arc dressing wheel is mounted on a grinding wheel dresser. The grinding wheel dresser has a CNC rotating axis and a dressing wheel rotary drive shaft mounted on the CNC rotating axis for driving the single circular arc dressing wheel to rotate around its own axis. The single circular arc dressing wheel is mounted on the dressing wheel rotary drive shaft of the grinding wheel dresser. Through the linkage of the two CNC moving axes of the dual-axis CNC moving unit and the one CNC rotating axis of the grinding wheel dresser, the equidistant movement of the arc head of the single circular arc dressing wheel along the theoretical profile of the gear cutting wheel and the normal yaw of the single circular arc dressing wheel are simultaneously achieved.
2. The method for dynamic yaw dressing of a tooth-cutting grinding wheel according to claim 1, characterized in that, The process of the single circular arc dressing wheel gradually decreasing from the maximum positive yaw angle to zero yaw angle and then gradually increasing from zero yaw angle to the maximum reverse yaw angle forms a positive dynamic yaw cycle; through the aforementioned positive dynamic yaw cycle, the single circular arc dressing wheel completes one positive movement dressing of the tooth cutting wheel.
3. The method for dynamic yaw dressing of a tooth-cutting grinding wheel according to claim 2, characterized in that, After the center of the arc head on the single arc head of the single arc dressing wheel, located at the dressing contact point, moves equidistantly in one direction along the theoretical surface of the tooth cutting wheel, the center of the arc head on the single arc head of the single arc dressing wheel, located at the dressing contact point, moves equidistantly in the opposite direction along the theoretical surface of the tooth cutting wheel. During the equidistant movement in the opposite direction, the yaw angle gradually decreases from the maximum reverse yaw angle to zero yaw angle, and then gradually increases from zero yaw angle to the maximum positive yaw angle.
4. The method for dynamic yaw dressing of a tooth-cutting grinding wheel according to claim 3, characterized in that, The process of the single circular arc dressing wheel gradually decreasing from the maximum reverse yaw angle to zero yaw angle and then gradually increasing from zero yaw angle to the maximum positive yaw angle forms a reverse dynamic yaw cycle; through the aforementioned reverse dynamic yaw cycle, the single circular arc dressing wheel completes one reverse movement dressing of the cutting tool grinding wheel.
5. The method for dynamic yaw dressing of a tooth-cutting grinding wheel according to claim 4, characterized in that, The positive dynamic yaw cycle and the negative dynamic yaw cycle constitute a complete dynamic yaw cycle. Through the complete dynamic yaw cycle, the positive and negative movement combination dressing of the single arc dressing wheel on the tooth cutting wheel is completed.
6. The method for dynamic yaw dressing of a tooth-turning grinding wheel according to claim 5, characterized in that, By continuously performing multiple complete dynamic oscillation cycles, the dressing of the gear cutting wheel by the single circular arc dressing wheel is completed.
7. The method for dynamic yaw dressing of a tooth-cutting grinding wheel according to claim 5, characterized in that, During the process of the center of the arc head of the single arc dressing wheel at the dressing contact point moving equidistantly in one direction along the theoretical surface of the tooth cutting wheel, or during the process of the center of the arc head of the single arc dressing wheel at the dressing contact point moving equidistantly in the opposite direction along the theoretical surface of the tooth cutting wheel, the dressing of the tooth cutting wheel by the single arc dressing wheel is completed by continuously performing several complete dynamic oscillation cycles.
8. The method for dynamic yaw dressing of a tooth-cutting grinding wheel according to claim 3, characterized in that, The single-arc trimming wheel oscillates at a constant speed around the center of the arc head at the trimming contact point to achieve a gradual decrease in the sway angle from the maximum positive sway angle to zero sway angle during the trimming process, and then gradually increases from zero sway angle to the maximum negative sway angle.
9. The method for dynamic yaw dressing of a tooth-turning grinding wheel according to claim 8, characterized in that, Furthermore, a dynamic frequency conversion runout compensation method is employed to periodically detect and compensate for uneven wear on the arc head of the single arc dressing wheel; the details of the dynamic frequency conversion runout compensation method are as follows: (1) Wear detection: The dressing wheel is periodically inspected after a specified period of use to obtain the wear data of the arc head of the single arc dressing wheel; (2) Wear area division: Based on the wear data of the arc head of the single arc dressing wheel, determine whether the wear uniformity of the arc head of the single arc dressing wheel is generally qualified; if not qualified, the wear area is divided into uniform wear area with relatively uniform wear, excessive wear area with relatively more wear than uniform wear area, and under-wear area with relatively less wear than uniform wear area. (3) Online wear compensation: During the entire process of dressing the profile of the cutting tool grinding wheel using the arc head of the single arc dressing wheel, different yaw speeds are set for different wear areas on the single arc dressing wheel that participate in the dressing of the cutting tool grinding wheel profile; wherein, the uniformly worn area located on the arc head of the single arc dressing wheel uses the same yaw speed as before the wear detection when participating in the dressing of the cutting tool grinding wheel profile; the excessively worn area located on the arc head of the single arc dressing wheel uses a faster yaw speed than before the wear detection when participating in the dressing of the cutting tool grinding wheel profile, thereby reducing the contact time between the excessively worn area on the single arc dressing wheel and the cutting tool grinding wheel profile; the under-worn area located on the arc head of the single arc dressing wheel uses a slower yaw speed than before the wear detection when participating in the dressing of the cutting tool grinding wheel profile, thereby increasing the contact time between the under-worn area on the single arc dressing wheel and the cutting tool grinding wheel profile.