CN-121973104-A - Diamond roller design method for dressing grinding wheel of compound grinding process, diamond roller and grinding wheel dressing method

CN121973104ACN 121973104 ACN121973104 ACN 121973104ACN-121973104-A

Abstract

The invention relates to the technical field of gear grinding, in particular to a diamond roller design method, a diamond roller and a grinding wheel dressing method for dressing a grinding wheel in a compound grinding process, which comprise the steps of obtaining tooth profile parameters of a gear to be machined, and calculating an original theoretical profile of the diamond roller based on the tooth profile parameters; thinning the original theoretical profile to obtain parameters of a first profile section, calculating parameters of a second profile section based on the parameters of the first profile section, calculating parameters of a third profile section based on the parameters of the second profile section, and sequentially connecting the first profile section, the second profile section and the third profile section along the radial direction of the diamond roller to obtain the diamond roller composite profile. The invention has the beneficial effects of convenient processing and high processing efficiency.

Inventors

LI GUOLONG
YAO BO
YANG JIMING
LIU YANG
WU CHENGHAO
LUO HAOJIA

Assignees

重庆大学

Dates

Publication Date: 20260505
Application Date: 20260306

Claims (10)

1. The diamond roller design method for dressing the grinding wheel of the composite grinding process is characterized by comprising the following steps of: s1, acquiring tooth profile parameters of a gear to be processed, and calculating an original theoretical profile of the diamond roller based on the tooth profile parameters; s2, thinning the original theoretical profile to obtain a first profile section parameter, and generating a first profile section; S3, calculating second profile section parameters based on the first profile section parameters, and calculating third profile section parameters based on the second profile section parameters; generating a second profile section according to the second profile section parameters, and generating a third profile section according to the third profile section parameters; And S4, sequentially connecting the first profile section, the second profile section and the third profile section along the radial direction of the diamond roller to obtain the diamond roller composite profile.
2. The diamond wheel design method according to claim 1, wherein in step S1, the diamond wheel original theoretical profile calculation step includes: a1, constructing an end face modification tooth profile equation of a gear to be processed according to tooth profile parameters, and obtaining a tooth surface of a helical gear according to the end face modification tooth profile equation; A2, calculating the profile of the grinding wheel under a fixed coordinate system according to tooth profile parameters of the gear to be processed; a3, stretching the sand profile shape along the self helix angle to obtain the tooth surface of the grinding wheel; And A4, calculating the original theoretical profile of the diamond roller according to the tooth surface of the grinding wheel.
3. The diamond roller design method according to claim 1, wherein in step S2, the original theoretical profile of the diamond roller is rotated by a preset angle around a preset point and translated to obtain a first profile segment parameter: In the formula, In the case of the first profile section, Is a translation component of the diamond roller after the original theoretical profile is rotated, Is a rotation matrix of the original theoretical profile of the diamond roller, Is the original theoretical profile of the diamond roller, The rotation angle of the diamond roller original theoretical profile curve around the diamond roller original theoretical profile end point is obtained.
4. The diamond roller design method according to claim 3, wherein the maximum value of the rotation angle of the original theoretical profile of the diamond roller is calculated as: In the formula, For the maximum value of the deflection angle, A tangential slope which is the starting point of the curve of the first profile section; The calculation formula of the maximum value of the translation range of the original theoretical profile of the diamond roller is as follows: In the formula, For the maximum value of the translation range, At the end point of the first profile section curve Coordinates on the axis.
5. The diamond wheel design method according to claim 1, wherein in step S3, the second profile section is a straight line section, and the coordinates of the second profile section are calculated as: In the formula, For the second profile section The coordinates of the points on the axis are, For the second profile section The coordinates of the points on the axis are, Terminating at the first profile section The coordinates of the points on the axis are, Terminating at the first profile section Coordinates of points on the axis.
6. The diamond wheel design method according to claim 1, wherein in step S3, the third profile segment is an arc segment, and the calculation formula of the third profile segment parameter is: In the formula, For the third profile section The coordinates of the points on the axis are, For the third profile section The coordinates of the points on the axis are, Is in the shape of a circular arc radius, With the second profile section being adjacent to one end of the third profile section The normal intersection point coordinates on the axis, With the second profile section being adjacent to one end of the third profile section Normal intersection coordinates on the axis.
7. A diamond roller for dressing of grinding wheel in composite grinding process, characterized in that it comprises a first profile section, a second profile section and a third profile section which are sequentially connected on the surface of the diamond roller along the radial direction of the diamond roller, wherein the first profile section, the second profile section and the third profile section are generated by using the design method according to any one of claims 1 to 6.
8. The diamond wheel according to claim 7, wherein the first profile section is used for line dressing of a worm wheel, the second profile section is used for distinguishing the first profile section from the third profile section, and the third profile section is used for point dressing of a shaped wheel.
9. A grinding wheel dressing method for a compound grinding process, characterized in that a grinding wheel to be dressed is dressed using a diamond roller according to any one of claims 7-8.
10. The dressing method according to claim 9, wherein the types of grinding wheels to be dressed include worm grinding wheels and shaped grinding wheels, and dressing modes of different grinding wheel types to be dressed include: a worm grinding wheel trimming mode, namely driving the worm grinding wheel and the diamond roller to synchronously perform meshing motion according to a preset transmission ratio, and trimming the worm grinding wheel by utilizing a first profile section; And (3) a shaping grinding wheel trimming mode, namely controlling the shaping grinding wheel and the diamond roller to carry out numerical control interpolation motion according to a preset track, and sequentially carrying out point trimming on the tooth surface of the shaping grinding wheel by utilizing the third profile section.

Description

Diamond roller design method for dressing grinding wheel of compound grinding process, diamond roller and grinding wheel dressing method Technical Field The invention relates to the technical field of gear grinding, in particular to a diamond roller design method, a diamond roller and a grinding wheel dressing method for dressing a grinding wheel in a compound grinding process. Background In order to simultaneously consider the efficiency and the final precision of gear machining, a rough-fine composite grinding process has become an important development direction of high-end gear manufacturing. The typical path of the process is that the worm grinding wheel gear grinding method is utilized to carry out high-efficiency rough grinding to quickly remove the tooth space allowance, and then the forming grinding wheel gear grinding method is utilized to carry out final fine grinding on the tooth surface so as to obtain extremely high tooth form precision and surface quality. Currently, worm grinding and forming grinding are two core processes in precision grinding of gears. In order to realize rough and finish machining compounding and gear machining adapting to different tooth shape requirements, a worm grinding wheel and a forming grinding wheel are integrated on the same gear grinding machine tool, and the compounding collaborative grinding not only can meet the machining requirements, but also can improve the production precision and efficiency of gears. However, in the prior art, the dressing of these two grinding wheels must rely on two completely different dressing tools and dressing movements, the worm grinding wheel is usually developed with expensive diamond dressing rollers with precise tooth shapes, and the forming grinding wheel is usually formed with a single crystal diamond pen, and is subjected to point contact profiling dressing through a numerical control track. The worm grinding wheel and forming grinding wheel dressing mode has the obvious defects that firstly, the internal space of a machine tool is limited, a plurality of sets of dressing mechanisms are arranged to cause crowding, the whole structural design is restricted, and the mechanical interference risk is increased, secondly, each special dresser needs to be independently designed and manufactured, the cost is high, but the use rate is relatively limited, and the equipment investment benefit is low. Therefore, there is a need for a diamond roll profile design method for compound grinding processes that supports continuous, precise, efficient processing of "rough-finish" compound grinding processes. Disclosure of Invention The invention aims to provide a diamond roller design method, a diamond roller and a grinding wheel dressing method for dressing a grinding wheel in a compound grinding process, so as to solve the technical problem that two independent special dressing devices are needed in the existing gear grinding process. The invention solves the technical problems by adopting a technical scheme that the diamond roller design method for dressing the grinding wheel of the composite grinding process comprises the following steps: s1, acquiring tooth profile parameters of a gear to be processed, and calculating an original theoretical profile of the diamond roller based on the tooth profile parameters; s2, thinning the original theoretical profile to obtain a first profile section parameter, and generating a first profile section; s3, calculating second profile section parameters based on the parameters of the first profile section, calculating third profile section parameters based on the parameters of the second profile section, generating a second profile section according to the second profile section parameters, and generating a third profile section according to the third profile section parameters; And S4, sequentially connecting the first profile section, the second profile section and the third profile section along the radial direction of the diamond roller to obtain the diamond roller composite profile. The invention has the remarkable effects that the continuity and the functionality of the profile are ensured through the design flow of calculating the theoretical profile, thinning treatment and adding transition and the design flow. The thinning design provides reasonable side gaps for grinding, the tooth top straight line and the arc section are specially optimized for the tooth groove shape of the formed grinding wheel, and the trimming quality of the two grinding wheels is ensured. And through having designed first profile section and third profile section on a buddha's warrior attendant gyro wheel, realize two kinds of functions of line finishing (for worm emery wheel) and point finishing (for shaping emery wheel) simultaneously, replaced two sets of independent trimming means of tradition, showing simplified lathe structure, the cost is reduced. Further, in step S1, the diamond roller original theoretical profile