CN105921823A - Grinding method for numerical-control worm grinding wheel of cycloid gear - Google Patents
Grinding method for numerical-control worm grinding wheel of cycloid gear Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/02—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding
- B23F5/04—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by grinding the tool being a grinding worm
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Abstract
The invention relates to a grinding method for a numerical-control worm grinding wheel of a cycloid gear. The space engagement theory is utilized, the three-dimensional profile equation of the worm grinding wheel of the machined cycloid gear is deduced according to the three-dimensional profile equation of the cycloid gear, and the cycloid gear is subjected to fine polishing through the worm grinding wheel. The grinding method has remarkable advantage compared with a cycloid gear forming and grinding technique, and intermittent machining is replaced by continuous machining. Meanwhile, the generating motion precision stability is higher than the intermittent Intermittent precision, so that the gear polishing precision is remarkably improved, the gear polishing production cost is remarkably reduced, and the gear polishing efficiency is remarkably improved. The grinding method is applied to a machine tool used for grinding the cycloid gear through the worm grinding wheel, a special clamp table for corresponding workpieces is designed, two cycloid gear blanks are positioned and installed at a time, and the spatial positions of the two cycloid gear blanks are determined. An online measuring head is additionally arranged on one side of the worm grinding wheel so as to position the spatial position of the worm grinding wheel. By means of the combination of the two techniques, rapid and accurate tool setting of the cycloid gear blanks and the worm grinding wheel is achieved.
Description
Technical Field
The invention belongs to gear grinding in the field of mechanical manufacturing, particularly relates to the field of generating grinding processing of a cycloid gear, and relates to a numerical control worm grinding wheel grinding method of the cycloid gear.
Background
With the development of industrial technology, more and more cycloid gears are applied, and cycloid gear speed reducers have the advantages of large reduction ratio, compact structure and the like, and are widely applied under the condition of space-limited use; the cycloid gear has important application in the transmission mechanism of the modern robot, and along with the development of the robot industry, the number and the quality of the cycloid gear need to be further improved; the requirements for the use of cycloid gears in traditional horology, military and the like are increasing, which at the same time requires increasing progress in the efficiency and accuracy level of the finishing.
The forming and grinding technology of the cycloid gear is developed more mature, the production efficiency is not guaranteed, and although a solution for modifying the cutter and simultaneously processing a plurality of teeth is provided, the effect is not satisfactory; meanwhile, the forming grinding has high requirements on the precision grade of the machine tool (mainly comprising positioning and mounting, tool setting precision and indexing precision), and the development of the forming grinding of the cycloid gear is also limited.
The cycloidal gear grinding machine simulates the motion relationship of a gear and a pin wheel when a cycloidal gear speed reducer works to realize grinding of the cycloidal gear.
The grinding technology of the cycloidal worm grinding wheel researched by XuYouhu, Wangxing and the like utilizes the meshing principle of a cycloidal gear and a cycloidal rack, and the derivation results in that the cycloidal rack can be meshed with any cycloidal gear under the condition of ensuring that the radius and the eccentricity of a rolling circle are the same; the method is equivalent to establishing the three-dimensional profile of the worm by using the normal profile of the theoretical worm, and is correct under the condition of ensuring that the outer diameter of the worm grinding wheel is not changed; however, as the machining process progresses, the outer diameter of the worm grinding wheel gradually becomes smaller as the grinding progresses, and if the profile of the worm is not corrected in time, the grinding precision is greatly reduced; this method is therefore unsuitable for long-term continuous grinding with grinding worms with high precision requirements.
With the development of numerical control technology and the improvement of worm grinding wheel finishing technology, the method for processing the cycloid gear by using the worm grinding wheel is realized, and the development of the cycloid gear grinding technology is promoted.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a numerical control worm grinding wheel grinding method for a cycloid gear, which is characterized in that a space meshing principle is applied, a worm grinding wheel three-dimensional profile formula is derived according to the cycloid gear three-dimensional profile formula, and the worm grinding wheel three-dimensional profile formula and a cycloid gear tooth blank are positioned, installed, adjusted and ground in a designed position. The technological process is realized on the machine tool, so that the production efficiency and the processing precision of the grinding of the cycloid gear are improved.
In order to solve the technical problems, the invention adopts the following technical scheme:
a numerical control worm grinding wheel grinding method of a cycloid gear is used on a worm grinding wheel grinding cycloid gear machine tool, a three-dimensional profile formula of a corresponding worm grinding wheel is calculated according to a cycloid gear three-dimensional profile formula, the worm grinding wheel is trimmed according to the three-dimensional profile formula, and a finished worm grinding wheel is utilized to process a cycloid gear tooth blank; positioning and mounting two cycloid gear blanks on a fixture table at one time to determine the spatial position of a workpiece; determining the spatial position of the worm grinding wheel according to the position and the corner of the central axis of the worm grinding wheel and the position of the online measuring head; and programming a numerical control program to carry out tool setting and grinding by utilizing the meshing relation and the spatial position of the worm grinding wheel and the cycloid gear. In order to realize the above functions, the main structure of the grinding machine tool is designed: the device comprises a machine tool base, a worm grinding wheel spindle, a worm grinding wheel translation guide rail, a workpiece clamp table, an online measuring head, a diamond roller and other related auxiliary devices.
As a preferred scheme of the invention, the calculation method of the profile formula of the worm grinding wheel comprises the following steps: establishing a space position coordinate system relation of the worm grinding wheel and the cycloid gear according to the three-dimensional profile of the cycloid gear, calculating a contact line in the meshing process according to the meshing motion relation of the worm grinding wheel and the cycloid gear, and performing spiral scanning motion on the contact line to obtain an equation formula of the three-dimensional profile of the worm grinding wheel; the profile formula of the worm grinding wheel is as follows:
contact line equation:
the three-dimensional profile of the worm grinding wheel after the additional spiral motion is as follows:
Xdm＝Xdcosθ-Ydsinθ
Ydm＝Xdsinθ+Ydcosθ
wherein z isgIs the number of teeth of the cycloid gear,is a cycloidal gear corner, lambda is a worm grinding wheel installation angle, K is a center distance, theta is a worm grinding wheel spiral angle, and T is a worm grinding wheel pitch; and finally, substituting the profile formulas of the X and Y of the cycloid gear into the calculation to obtain the three-dimensional profile formula of the worm grinding wheel.
As another preferable scheme of the invention, two cycloid gear tooth blanks are positioned and installed on a clamp table at one time, the clamp table adopts a positioning method of one surface and two pins, a straight line where a cylindrical pin and a trimming pin are located passes through one tooth slot and one tooth top of the cycloid gear tooth blank (the number of cycloid gear teeth in an RV reducer is generally odd), two trimming pins are arranged at the position to respectively limit the rotational freedom degree of the tooth blank along the cylindrical pin, and under the condition that the requirement of accuracy grade is met, two workpiece tooth blanks are positioned and installed at one time, and the positions of the space tooth slot and the tooth top of the tooth blank are determined.
As another preferred scheme of the invention, the two trimming pins respectively limit the rotational freedom degree of the gear blank along the cylindrical pin, the process holes and the positioning holes processed on the gear blank of the cycloid gear are superposed and have different sizes, and the positioning holes of the two gear blanks have a 180-degree difference; the upper gear blank is positioned by allowing the trimming pin for limiting the freedom degree of the upper gear blank to pass through the fabrication hole of the lower gear blank, the rotation freedom degree is limited, the fabrication hole of the lower gear blank passes through the trimming pin, and the trimming pin does not cause any influence on the lower gear blank; meanwhile, the upper gear side plane of the lower gear blank is a positioning and mounting surface of the upper gear blank.
As an improved scheme of the invention, an online measuring head is designed on one side of the worm grinding wheel on the central shaft of the worm grinding wheel, so that the spatial position of the three-dimensional profile of the worm grinding wheel can be determined, and a numerical control program is programmed to carry out tool setting and grinding processing by combining the spatial position of the tooth blank determined in the step 3 of the method and utilizing the meshing relationship of the two.
As another improvement of the present invention, in order to implement the grinding method, the main structure of the grinding machine is designed with: the machine tool comprises a machine tool base, a worm grinding wheel spindle, a worm grinding wheel translation guide rail, a workpiece clamp table, an online measuring head and a diamond roller; the grinding machine comprises a machine tool base, a worm grinding wheel spindle, a clamping mechanism and a grinding wheel spindle, wherein the worm grinding wheel spindle is arranged on a translation guide rail of the machine tool, a X, Y, Z-direction coordinate system is established by taking a worm grinding wheel as a center, the worm grinding wheel spindle is arranged at a certain angle along the Y-axis direction, the certain angle is a worm grinding wheel spiral angle, the A axis realizes the rotation function of the worm grinding wheel axis on a YZ plane, the B axis is the grinding wheel spindle, the high-speed rotation of the worm grinding wheel is realized, an online measuring head is arranged at the end part of the worm grinding wheel spindle, the on. The machine tool structure realizes the functions in the steps, and combines a worm grinding wheel three-dimensional profile formula to finish numerical control grinding of a worm grinding wheel fine grinding cycloid gear, and further realizes accurate and efficient grinding of the cycloid gear by the aid of an online grinding wheel finishing function of a diamond roller and other machine tool auxiliary devices related to a gear grinding machine.
The invention has the beneficial effects that: the method can realize high-precision and high-efficiency grinding of the cycloid gear, replaces indexing grinding with generating continuous grinding, and can replace the current mainstream forming grinding method in engineering application; a worm grinding wheel grinding method based on a cycloid gear is also proposed along with a modification method based on the inverse calculation of the profile of the worm grinding wheel, the process of modifying the cycloid gear is eliminated, and the processing efficiency is greatly improved; the on-machine detection function of the system well solves the problem that detection and assembly are repeated continuously in the trial production process of the product, and improves the trial production efficiency; the on-machine dressing module of the worm grinding wheel is additionally arranged on the machine tool, so that the worm grinding wheel can be conveniently and accurately dressed, the auxiliary time of grinding processing is shortened, the processing efficiency is improved, and meanwhile, the worm grinding wheel does not need to be installed again, and the processing precision and stability are also ensured.
Drawings
FIG. 1 is a schematic diagram of the generation of a cycloid gear and its equidistant lines;
FIG. 2 is a spatial meshing position diagram of a cycloid gear and a worm grinding wheel;
FIG. 3 is a diagram of the meshing transmission relationship between a cycloid gear and a worm grinding wheel;
FIG. 4 is a diagram of a worm grinding wheel spiral flank;
FIG. 5 is a cross-section of a worm grinding wheel;
FIG. 6 is a schematic view of a machine tool;
FIG. 7 is a view of the fixture table;
fig. 8 is a meshing view of the worm grinding wheel and the cycloid gear.
Detailed Description
The invention is described in further detail below with reference to the figures and the detailed description.
Taking grinding of a standard involute helical gear by a worm grinding wheel as an example, a numerical control worm grinding wheel grinding method of a cycloid gear comprises the following steps:
as shown in fig. 1, the parameters in the figure are:
RZis the pinwheel radius;
K1is the coefficient of the minor amplitude of the cycloid;
Zbthe number of teeth of the pin gear;
Zais the number of cycloidal gear teeth;
ψ is the (no-coring) angle of R with respect to R;
x0、y0is a cycloidal gear tooth profile equation;
and x and y are cycloidal equidistant profile equations.
The tooth profile equation of the cycloid gear can be obtained by the cycloid forming process and the geometric relationship as follows:
the radius of the needle gear sleeve is set as rZAnd the included angle between the common normal of any point of the tooth profile of the cycloid and the X axis is gamma, the equation of the tooth profile equidistant line of the cycloid gear is as follows:
x＝xo+rZcosγ
y＝yo-rZsinγ
in the formula:
the three-dimensional profile of the cycloid worm grinding wheel is the spiral tooth surface of the cycloid worm grinding wheel. The meshing characteristics are analyzed by using the normal tooth profile or the axial tooth profile, so that the spiral tooth surface equation must be solved firstly. Establishing a space meshing relationship between the cycloid gear and the worm grinding wheel, wherein fig. 2 is a meshing position relationship between the cycloid gear and the worm grinding wheel, and fig. 3 is a meshing transmission relationship between the cycloid gear and the worm grinding wheel. According to the diagram, odzdIs the axis of rotation of the worm grinding wheel, ogz0Is the axis of rotation of the workpiece and the helix angle on the worm grinding wheel pitch cylinder is lambda. The transmission ratio of the worm grinding wheel to the cycloid gear is as follows:
in the formula: z is a radical ofgThe number of workpiece teeth (i.e. the number of cycloidal gear teeth),
z-the number of heads of the worm grinding wheel,
-the angle of rotation of the workpiece,
-the work piece is rotated pastAnd then the angle the worm grinding wheel rotates.
Radius of pitch circle R of worm grinding wheeldjAnd the lead T is calculated as follows:
wherein R isgjIs the pitch radius of the workpiece, and this parameter is determined by the designer.
The closest distance between the axis of the worm grinding wheel and the axis of the workpiece is as follows:
K＝Rgj+Rdj
the relationship between the coordinate systems of the cycloid gear and the worm grinding wheel is established as follows:
Ogand (XYZ) is a movable coordinate system fixedly connected with the cycloid gear.
Og(X0Y0Z0) To determine the reference coordinate system of the spatial position of the cycloid gear, which is fixed in space, OgZ0Shaft and OgThe Z axis coincides at any time.
Od(XdYdZd) Is a movable coordinate system fixedly connected with the worm grinding wheel.
Od(Xd0Yd0Zd0) To determine the spatial position of the grinding worm, which is fixed in space, reference coordinate system OdZdShaft and OdZd0The axes coincide at any time.
The workpiece to be processed is a cycloid gear, and the tooth form of the cycloid gear is an equidistant line of a short-amplitude epicycloid. Since the cycloid gear is straight, the pitch plane is perpendicular to the rotation axis of the workpiece, i.e., the point participating in meshing is the point on the end face tooth profile. Now, a workpiece (cycloid gear) tooth surface equation M (X, Y, Z) is established:
X＝X(ψ)
Y＝Y(ψ)
Z＝h
the formula is a cycloidal tooth surface equation, and is an end surface of the cycloidal gear when h is constant and 0.
According to the installation position and the meshing motion relation of the cycloid gear and the worm grinding wheel, an expression of a contact point M (X, Y, Z) in a cutter fixed connection coordinate system, namely a contact line equation, can be obtained through coordinate transformation. The specific calculation process is as follows:
finishing the above formulas to obtain:
in the formula:
obtaining the equation of the contact line when the contact line is wound around OdZdShaft at angular velocity θWhen the worm wheel rotates and ensures that the lead is T to do spiral motion (as shown in figure 4), the motion track is the spiral surface of the worm grinding wheel, and the expression is as follows:
namely, it is
When X is presentdmWhen 0, an axial edge profile equation of the worm wheel is obtained, which is expressed in the tool coordinate system as follows:
Ydz＝Xdsinθ+Ydcosθ
the worm grinding wheel and the cycloid gear are actually meshed in the normal tooth surface of the worm grinding wheel, and when strict spiral motion is ensured, the included angle between the normal section and the axial section is lambda (as shown in fig. 5), so that the normal blade profile equation is expressed in a tool coordinate system as follows:
Xdf＝Xdcos(θ-θ1)-Ydsin(θ-θ1)
Ydf＝Xdsin(θ-θ1)+Ydcos(θ-θ1)
wherein,
since the above profile equation of normal section is established in the tool coordinate system, XdfRelative to the tool coordinate system. When a coordinate system is independently established in the normal section, the blade profile is as follows:
according to the derivation calculation process, the profile equation of the worm grinding wheel can be obtained, and therefore the required worm grinding wheel is trimmed for numerical control machining.
Fig. 6 is a schematic structural diagram of a machine tool main body, which integrally expresses the main structural distribution of the machine tool, wherein: the grinding machine comprises a grinding machine base 1, a workpiece clamping table 2, a workpiece clamp 3, a gold steel roller (and ejector pin) clamping table 4, a diamond roller 5, a spindle rotating motor 6, a worm grinding wheel cutter 7, an online measuring head 8, a ball screw mechanism 9 and a machine tool guide rail 10 (mainly comprising X, Y, Z linear guide rails in three directions).
The specific steps of the grinding machine for machining the cycloid gear are as follows:
and (3) clamping the cycloid gear blank: as the cycloid pinwheels in the actual RV reducer are used in pairs, in order to reduce the assembly error in use, the cycloid pinwheels are clamped according to the actual use condition in the machining process, so that the transmission error of the cycloid pinwheels can be reduced to the maximum extent.
The specially designed fixture adopts a traditional positioning mode of one surface and two pins as shown in fig. 7, and the chamfered edge pins on two sides respectively limit the rotation freedom degree of one gear blank. The first cycloid gear blank is positioned by a clamping table, a cylindrical pin and a trimming pin at one side; the second cycloid gear blank is positioned by the upper surface of the first cycloid gear blank, the cylindrical pin and the chamfered edge pin on the other side and is clamped by the locking nut. The fabrication holes and the positioning holes of the two gear blanks are overlapped in the vertical direction of the spatial position, and have different sizes, so that interference and over-positioning are avoided.
Grinding and tool setting of the cycloid gear: the accurate positions of a tooth groove and a tooth top of the cycloid tooth blank can be determined by adopting the positioning pin at the clamping table, and the accurate position of the worm grinding wheel can be accurately determined by installing an online measuring head on the worm grinding wheel main shaft; and calculating the initial meshing positions of the worm grinding wheel and the cycloid tooth blank according to the meshing principle, as shown in fig. 8, accurately controlling the initial position coordinates of the worm grinding wheel and the cycloid tooth blank in a machine tool by using a numerical control system, and setting a proper feeding amount to perform grinding production.
Regrinding the worm grinding wheel: as the grinding production is carried out, the worm grinding wheel is gradually worn, so that the requirement of the machining precision level cannot be met, and therefore, the worm grinding wheel needs to be reground and trimmed, grinding parameters are readjusted, and the machining precision of a machine tool is kept; the worm grinding wheel moves to the diamond roller along the Z-axis direction of the machine tool, the positions of the worm grinding wheel and the diamond roller are adjusted through a numerical control system according to the position of an online measuring head, the proper feeding amount is set, and the re-grinding and trimming of the worm grinding wheel can be carried out according to a preset program.
In summary, the grinding process of the cycloid gear blank comprises the following steps: (introduction of relative position and movement of each part is added) to realize the grinding method, the main structure of the grinding machine tool is designed to have: the device comprises a machine tool base, a worm grinding wheel central shaft, a worm grinding wheel translation guide rail, a workpiece clamp table, an online measuring head, a diamond roller, other related auxiliary devices and the like. The grinding machine comprises a machine tool base, a worm grinding wheel spindle is mounted on a machine tool translation guide rail, a X, Y, Z-direction coordinate system is established by taking a worm grinding wheel as a center, the worm grinding wheel spindle forms installation at a certain angle along the Y-axis direction (namely a worm grinding wheel spiral angle), the axis A realizes the rotation function of the axis of the worm grinding wheel on a YZ plane, the axis B is a grinding wheel spindle to realize high-speed rotation of the worm grinding wheel, an online measuring head is mounted at the end part of the worm grinding wheel spindle, the position precision is high, an on-machine detection function can be realized, the axis C is overlapped with the axis Z to realize rotation of a workpiece tooth blank, the axis Y is a diamond roller spindle to realize high-speed rotation of a diamond roller, and the diamond roller can move in.
Firstly, two cycloid gear blanks installed at 180 degrees are respectively placed on a clamping table 2 and clamped by a locking nut 3, a diamond roller clamping table 4 moves downwards to be in contact with the clamp clamping table 2, the rigidity of a cylindrical pin of the clamp is increased, and the installation of the gear blanks is finished; according to the meshing principle, the grinding position relation between the worm grinding wheel and the cycloid gear blank is calculated, and the positions of the worm grinding wheel X, Y, Z in three directions are adjusted through a numerical control system; the grinding processing can be carried out by setting a proper feeding amount through the contact tool setting of the worm grinding wheel and the cycloid tooth blank; when the machining time or the number of the machined workpieces reaches a certain degree, regrinding adjustment needs to be carried out on the worm grinding wheel, machining is interrupted, the position of the worm grinding wheel in the X, Y, Z direction is readjusted, and the worm grinding wheel is trimmed by using a diamond roller 5; the worm grinding wheel can be divided into a rough grinding section and a fine grinding section in the machining process, so that the worm grinding wheel can be used more efficiently, and the surface quality of a machined workpiece can be well controlled.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A numerical control worm grinding wheel grinding method of a cycloid gear is used on a worm grinding wheel grinding cycloid gear machine tool and is characterized in that a three-dimensional profile formula of a corresponding worm grinding wheel is calculated according to a cycloid gear three-dimensional profile formula, the worm grinding wheel is trimmed according to the three-dimensional profile formula, and a cycloid gear tooth blank is processed by the trimmed worm grinding wheel; positioning and mounting two cycloid gear blanks on a fixture table at one time to determine the spatial position of a workpiece; determining the spatial position of the worm grinding wheel according to the position and the corner of the central axis of the worm grinding wheel and the position of the online measuring head; and programming a numerical control program to carry out tool setting and grinding by utilizing the meshing relation and the spatial position of the worm grinding wheel and the cycloid gear.
2. The method for grinding the numerical control worm grinding wheel of the cycloid gear as claimed in claim 1, wherein the calculation method of the worm grinding wheel profile formula is as follows: establishing a space position coordinate system relation of the worm grinding wheel and the cycloid gear according to the three-dimensional profile of the cycloid gear, calculating a contact line in the meshing process according to the meshing motion relation of the worm grinding wheel and the cycloid gear, and performing spiral scanning motion on the contact line to obtain an equation formula of the three-dimensional profile of the worm grinding wheel; the profile formula of the worm grinding wheel is as follows:
contact line equation:
the three-dimensional profile of the worm grinding wheel after the additional spiral motion is as follows:
Xdm＝Xdcosθ-Ydsinθ
Ydm＝Xdsinθ+Ydcosθ
wherein z isgIs the number of teeth of the cycloid gear,is a cycloidal gear corner, lambda is a worm grinding wheel installation angle, K is a center distance, theta is a worm grinding wheel spiral angle, and T is a worm grinding wheel pitch; and finally, substituting the profile formulas of the X and Y of the cycloid gear into the calculation to obtain the three-dimensional profile formula of the worm grinding wheel.
3. The grinding method of numerical control worm grinding wheel of cycloid gear according to claim 1, characterized in that two cycloid gear tooth blanks are positioned and mounted at one time on a fixture table, the fixture table adopts a one-face two-pin positioning method, the straight line where the cylindrical pin and the chamfered pin are located passes through one tooth socket and tooth top of the cycloid gear tooth blank, two chamfered pins are arranged here to limit the rotational freedom of the tooth blank along the cylindrical pin respectively, under the condition of meeting the requirement of precision grade, two workpiece tooth blanks are positioned and mounted at one time, and the space tooth socket and tooth top position of the tooth blank are determined.
4. The method for grinding the numerical control worm grinding wheel of the cycloid gear as claimed in claim 3, wherein the two trimming pins respectively limit the rotational freedom of the gear blank along the cylindrical pin, the process holes and the positioning holes processed on the gear blank of the cycloid gear are overlapped in position and have different sizes, and the difference between the positioning holes of the two gear blanks is 180 degrees; the upper gear blank is positioned by allowing the trimming pin for limiting the freedom degree of the upper gear blank to pass through the fabrication hole of the lower gear blank, the rotation freedom degree is limited, the fabrication hole of the lower gear blank passes through the trimming pin, and the trimming pin does not cause any influence on the lower gear blank; meanwhile, the upper gear side plane of the lower gear blank is a positioning and mounting surface of the upper gear blank.
5. The method for grinding the worm grinding wheel of the cycloid gear in the numerical control manner as defined in claim 3, wherein an online measuring head is arranged on one side of the worm grinding wheel on the central shaft of the worm grinding wheel, so that the spatial position of the three-dimensional profile of the worm grinding wheel can be determined, and a numerical control program is programmed to perform tool setting and grinding by combining the determined spatial position of the gear blank according to the meshing relationship between the two.
6. The grinding method of the numerical control worm grinding wheel of the cycloid gear as claimed in claim 1, characterized in that, in order to realize the grinding method, the main structure of the grinding machine is designed to have: the machine tool comprises a machine tool base, a worm grinding wheel spindle, a worm grinding wheel translation guide rail, a workpiece clamp table, an online measuring head and a diamond roller; the grinding machine comprises a machine tool base, a worm grinding wheel spindle, a clamping mechanism and a grinding wheel spindle, wherein the worm grinding wheel spindle is arranged on a translation guide rail of the machine tool, a X, Y, Z-direction coordinate system is established by taking a worm grinding wheel as a center, the worm grinding wheel spindle is arranged along a Y-axis direction at a certain angle, the certain angle is a worm grinding wheel spiral angle, an A axis realizes the rotation function of a worm grinding wheel axis on a YZ plane, a B axis is the grinding wheel spindle to realize the high-speed rotation of the worm grinding wheel, an online measuring head is arranged at the end part of the worm grinding.
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| CN108098515A (en) * | 2017-12-12 | 2018-06-01 | 科德数控股份有限公司 | A kind of method using a variety of forming grinding wheel processing drill groove profiles |
| CN109396567A (en) * | 2018-11-06 | 2019-03-01 | 重庆大学 | The digital envelope method of worm abrasion wheel profile is determined in correction of the flank shape cycloid gear generating grinding |
| CN109834551A (en) * | 2019-01-28 | 2019-06-04 | 湖北工业大学 | A kind of method of arc diamond wheel grinding circular arc straight trough |
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| CN113927483A (en) * | 2020-07-14 | 2022-01-14 | 中南大学 | Face gear worm grinding wheel dressing method |
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| CN109396567A (en) * | 2018-11-06 | 2019-03-01 | 重庆大学 | The digital envelope method of worm abrasion wheel profile is determined in correction of the flank shape cycloid gear generating grinding |
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| CN110929352A (en) * | 2019-11-25 | 2020-03-27 | 重庆大学 | Profile design method for formed grinding wheel for grinding cycloid gear |
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| CN113927483B (en) * | 2020-07-14 | 2022-12-09 | 中南大学 | Face gear worm grinding wheel dressing method |
| CN113927483A (en) * | 2020-07-14 | 2022-01-14 | 中南大学 | Face gear worm grinding wheel dressing method |
| CN112643143A (en) * | 2020-11-13 | 2021-04-13 | 重庆大学 | Profile design method for drum-shaped worm grinding wheel of grinding face gear |
| CN112643143B (en) * | 2020-11-13 | 2022-05-06 | 重庆大学 | Profile design method for drum-shaped worm grinding wheel of grinding face gear |
| CN113400197B (en) * | 2021-06-23 | 2022-07-26 | 重庆大学 | Method for shaping and trimming drum-shaped worm grinding wheel for grinding face gear |
| CN113400197A (en) * | 2021-06-23 | 2021-09-17 | 重庆大学 | Forming and trimming method for drum-shaped worm grinding wheel for grinding face gear |
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