CN112548229A - Variable pressure angle gear hobbing method - Google Patents
Variable pressure angle gear hobbing method Download PDFInfo
- Publication number
- CN112548229A CN112548229A CN202011380320.6A CN202011380320A CN112548229A CN 112548229 A CN112548229 A CN 112548229A CN 202011380320 A CN202011380320 A CN 202011380320A CN 112548229 A CN112548229 A CN 112548229A
- Authority
- CN
- China
- Prior art keywords
- gear
- hob
- angle
- machined
- parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- B23F5/20—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 milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/14—Control or regulation of the orientation of the tool with respect to the work
Abstract
The invention belongs to the technical field of hobbing, and particularly relates to a variable pressure angle hobbing method, which comprises the following steps: s1, receiving parameters of the gear to be machined, wherein the parameters comprise a gear module m1 and a gear helix angle beta; s2, receiving hob parameters including a hob modulus m0 and a hob lead angle gamma; s3, simulating a simulated gear which can be directly processed by a hob, wherein in the parameters of the simulated gear, a simulation module m2 is m0, a pressure angle alpha 2 is alpha 0, and a simulation helix angle is beta 2; s4, obtaining (pi multiplied by m1 multiplied by Z1)/sin beta (pi multiplied by m2 multiplied by Z2)/sin beta 2 according to the fact that the lead angle of the simulated gear and the gear to be machined is equal, wherein Z1 is the number of teeth of the gear to be machined, Z2 is the number of teeth of the simulated gear, and Z1 is Z2; obtaining β 2 ═ sin ^ (-1) ((m0 × sin β)/m 1); s5, calculating the actual installation angle eta of the hob, beta 2 +/-gamma, sin ^ (-1) ((m0 multiplied by sin beta)/m 1) +/-gamma; and S6, ending. By using the method, when the gear to be machined does not belong to a specific workpiece on a drawing, the actual mounting angle of the hob can be quickly obtained.
Description
Technical Field
The invention belongs to the technical field of hobbing, and particularly relates to a variable pressure angle hobbing method.
Background
The variable pressure angle hob refers to a hob with a pressure angle different from that of the gear to be machined.
When the module and the pressure angle of the hob are the same as those of the gear, the installation angle of the hob can be calculated by the lead angle of the hob and the helix angle of the gear. However, when a variable pressure angle hob is used for gear hobbing, the module and the pressure angle of the hob are different from those of the gear, and at this time, the hob installation angle calculated by the lead angle of the hob and the helix angle of the gear cannot be directly used for machining, otherwise, the helix angle of the machined workpiece is not equal to that required.
Thus, typically, a gear of one parameter will correspond to a hob of one parameter. The mainstream method of the prior art is to design a hob matched with a gear according to the gear meshing principle. However, in order to save development cost, a variable pressure angle hob is also used for machining in the gear hobbing process. Generally, a hob installation angle when a specific workpiece is machined by using the hob will be described on a variable-pressure-angle hob drawing, but when a gear to be machined does not belong to the specific workpiece on the drawing, an actual installation angle of the hob is not known, and a satisfactory effect cannot be obtained by randomly installing the hob.
Therefore, there is a need for a variable pressure angle hobbing method that can quickly obtain the actual setting angle of the hob when the gear to be machined does not belong to a specific workpiece on the drawing.
Disclosure of Invention
The invention aims to provide a variable-pressure-angle hobbing method, which can quickly obtain the actual installation angle of a hob when a gear to be machined does not belong to a specific workpiece on a drawing.
The basic scheme provided by the invention is as follows:
the variable pressure angle hobbing method comprises the following steps:
s1, receiving parameters of the gear to be machined, wherein the parameters comprise a gear module m1 and a gear helix angle beta;
s2, receiving hob parameters including a hob modulus m0 and a hob lead angle gamma;
s3, simulating a simulated gear which can be directly processed by a hob, wherein in the parameters of the simulated gear, a simulation module m2 is m0, a pressure angle alpha 2 is alpha 0, and a simulation helix angle is beta 2;
s4, obtaining (pi multiplied by m1 multiplied by Z1)/sin beta (pi multiplied by m2 multiplied by Z2)/sin beta 2 according to the fact that the lead angle of the simulated gear and the gear to be machined is equal, wherein Z1 is the number of teeth of the gear to be machined, Z2 is the number of teeth of the simulated gear, and Z1 is Z2; obtaining β 2 ═ sin ^ (-1) ((m0 × sin β)/m 1);
s5, calculating the actual installation angle eta of the hob, beta 2 +/-gamma, sin ^ (-1) ((m0 multiplied by sin beta)/m 1) +/-gamma;
and S6, ending.
Basic scheme theory of operation and beneficial effect:
after receiving the parameters of the gear to be processed and the parameters of the hob; to calculate the actual setting angle, a simulated gear is simulated that can be directly machined by the hob, i.e. a simulated gear with a module and pressure angle equal to that of the hob.
Since the hob is matched with the gear to be machined and the simulated gear is also matched with the hob, the lead angle of the gear to be machined is equal to that of the simulated gear, that is, (pi × m1 × Z1)/sin β ═ pi × m2 × Z2)/sin β 2, and since the hob is matched with the gear to be machined and the simulated gear is also matched with the hob, the number of teeth Z1 of the gear to be machined is equal to that of the simulated gear Z2, and based on the above conditions, the simulated helix angle is β 2 ═ sin ^ (-1) ((m0 × sin β)/m 1). Finally, on the basis of obtaining the simulated helix angle, calculating the actual installation angle eta of the hob, which is beta 2 +/-gamma, sin ^ (-1) ((m0 x sin beta)/m 1) ± gamma (because the hob lead angle and the gear helix angle are signed when actually installing, the signed values follow left negative and right positive, namely, the left rotation is negative and the right rotation is positive, and the specific addition or subtraction in the formula is determined according to specific situations).
Therefore, by using the method, the actual installation angle of the hob can be quickly obtained when the gear to be machined is matched with the hob but the gear to be machined does not belong to a specific workpiece on a drawing.
Further, in S1, the received gear parameter to be processed further includes a gear pressure angle α 1; in S2, the received hob parameters further include a hob pressure angle α 0; further comprising:
s21, determining whether or not m1 × cos α 1 is m2 × cos α 2, based on the received gear parameters and hob parameters; if so, go to S3.
If the gear to be machined can be machined by the hob, m1 × cos α 1 is m2 × cos α 2 according to the gear meshing principle; if the received parameters do not satisfy the above equation, it means that the hob cannot be used to machine the gear to be machined regardless of the setting angle. When the above equation is satisfied, the matching between the hob and the gear to be machined is described, and therefore, the process goes to S3 for subsequent calculation.
Further, S22, reporting an error, wherein the hob and the gear to be processed are not matched, the gear to be processed cannot be obtained by processing the hob, and the process goes to S6; if m1 × cos α 1 is not satisfied in S21, the process proceeds to S22 by m2 × cos α 2.
If the equation is not satisfied, it indicates that the hob and the gear to be machined are not matched, and the gear to be machined cannot be machined by the hob, so the process goes to S22 to report an error, and the operator checks/changes the gear data to be machined and/or the hob data.
Further, in S21, when it is determined whether or not m1 × cos α 1 is m2 × cos α 2, the accuracy of the determination is not less than three decimal places.
Ensuring sufficient accuracy to ensure the effectiveness of subsequent steps.
Further, still include:
s51, storing the actual installation angle of the hob, and the corresponding gear parameter to be processed and the hob parameter;
s31, outputting the matched actual installation angle, and turning to S6;
in S3, matching is carried out from the stored actual installation angle according to the received gear parameters to be processed and the roller parameters, and if the matching is successful, the operation goes to S31; if the matching is not successful, a simulated gear which can be directly processed by the hobbing cutter is simulated.
After the calculated actual mounting angle, the corresponding gear parameter to be processed and the hob parameter are matched, the actual mounting angle can be matched from the stored data when the actual mounting angle is calculated, and the corresponding actual mounting angle can be directly matched when the stored records of the gear parameter to be processed and the roller parameter are received. The effective utilization rate of each calculation result can be effectively enhanced.
Further, in S51, the data is stored in the cloud server.
Compared with the storage in the local area, the method is safer, and can simultaneously store the data uploaded by different users, thereby realizing the sharing of the calculation result.
Further, the implementation subject of the method is a mobile phone APP.
Further, in S22, the error is reported by voice.
Compared with the text error reporting mode, the voice error reporting mode can attract the attention of workers.
Further, in S22, the error is reported by sound and light.
Drawings
FIG. 1 is a flow chart of a first embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the tool holder portion in the third embodiment of the present invention;
FIG. 3 is a partial schematic view of portion A of FIG. 2;
FIG. 4 is a schematic structural view of the third embodiment in centering;
fig. 5 is a partial schematic view of the portion B in fig. 4.
Detailed Description
The following is further detailed by way of specific embodiments:
example one
As shown in fig. 1, the variable pressure angle hobbing method includes:
s1, receiving parameters of the gear to be machined, wherein the parameters comprise a gear module m1, a gear helix angle beta and a gear pressure angle alpha 1;
s2, receiving hob parameters including a hob modulus m0, a hob lead angle gamma and a hob pressure angle alpha 0;
s21, determining whether or not m1 × cos α 1 is m2 × cos α 2, based on the received gear parameters and hob parameters; if yes, go to S3; if not, go to S22; when it is determined whether or not m1 × cos α 1 is m2 × cos α 2, the precision is not less than the three digits after the decimal point, and in this embodiment, the precision is four digits after the decimal point.
S22, reporting errors, wherein the hob and the gear to be processed are not matched, and the gear to be processed cannot be obtained by processing the hob through the hob, in the embodiment, the error is reported in a voice mode, and in other embodiments, the error can be reported in an acousto-optic mode; and goes to S6.
S3, simulating a simulated gear which can be directly processed by a hob, wherein in the parameters of the simulated gear, a simulation module m2 is m0, a pressure angle alpha 2 is alpha 0, and a simulation helix angle is beta 2;
s4, obtaining (pi multiplied by m1 multiplied by Z1)/sin beta (pi multiplied by m2 multiplied by Z2)/sin beta 2 according to the fact that the lead angle of the simulated gear and the gear to be machined is equal, wherein Z1 is the number of teeth of the gear to be machined, Z2 is the number of teeth of the simulated gear, and Z1 is Z2; obtaining β 2 ═ sin ^ (-1) ((m0 × sin β)/m 1);
s5, calculating the actual installation angle eta of the hob, beta 2 +/-gamma, sin ^ (-1) ((m0 multiplied by sin beta)/m 1) +/-gamma;
and S6, ending.
In this embodiment, the main implementation body of the method is a mobile phone APP, and in other embodiments, the method may also be a computer program.
The specific implementation process is as follows:
after receiving the gear parameters to be processed and the hob parameters, the mobile phone APP; if the gear to be machined can be machined by the hob, m1 × cos α 1 is m2 × cos α 2 according to the gear meshing principle; if the received parameters do not satisfy the above equation, it means that the hob cannot be used to machine the gear to be machined regardless of the setting angle. Therefore, the program proceeds to S22 to perform voice error reporting to allow the operator to check/change the gear data to be machined and/or the hob data.
If the above equation is satisfied, it indicates that the hob and the gear to be machined are matched, and therefore, the process goes to S3 for subsequent calculation. To calculate the actual setting angle, a simulated gear is simulated that can be directly machined by the hob, i.e. a simulated gear with a module and pressure angle equal to that of the hob.
Since the hob is matched with the gear to be machined and the simulated gear is also matched with the hob, the lead angle of the gear to be machined is equal to that of the simulated gear, that is, (pi × m1 × Z1)/sin β ═ pi × m2 × Z2)/sin β 2, and since the hob is matched with the gear to be machined and the simulated gear is also matched with the hob, the number of teeth Z1 of the gear to be machined is equal to that of the simulated gear Z2, and based on the above conditions, the simulated helix angle is β 2 ═ sin ^ (-1) ((m0 × sin β)/m 1). Finally, the actual installation angle η ═ β 2 ± γ ═ sin ^ (-1) ((m0 × sin β)/m1) ± γ of the hob is calculated after the simulated helix angle is obtained.
Therefore, by using the method, whether the hob is matched with the gear to be machined can be quickly judged, and the actual installation angle of the hob can be quickly obtained when the gear to be machined is matched with the hob but the gear to be machined does not belong to a specific workpiece on a drawing.
Example two
Different from the first embodiment, the present embodiment further includes:
s51, storing the actual installation angle of the hob, and the corresponding gear parameter to be processed and the hob parameter; in this embodiment, the data is stored in the cloud server.
In S3, matching is carried out from the stored actual installation angle according to the received gear parameters to be processed and the roller parameters, and if the matching is successful, the operation goes to S31; if the matching is unsuccessful, simulating a simulated gear which can be directly processed by a hob;
s31, outputting the matched actual installation angle, and turning to S6;
by the mode, after the calculated actual mounting angle, the corresponding gear parameter to be processed and the hob parameter are matched, the actual mounting angle can be matched from the stored data when the actual mounting angle is calculated, and the corresponding actual mounting angle can be directly matched when the stored record of the gear parameter to be processed and the roller parameter is received. The effective utilization rate of each calculation result can be effectively enhanced.
The data is stored in the cloud server, so that the data is safer compared with the data stored locally, and the data uploaded by different users can be stored simultaneously, so that the sharing of the calculation result is realized.
EXAMPLE III
Reference numerals in the drawings of the specification include: the device comprises a rack 1, a middle-play motor 2, a lead screw 3, a nut 4, a tool rest sliding plate 5, a tool bar 6, a main shaft driving mechanism 7, a main shaft 8, a clamping jaw 9, an angular contact bearing 10, an alignment core shaft 11 and an alignment block 12.
As shown in fig. 2 to 5, unlike the first embodiment, the present embodiment further includes a mounting frame 1 for mounting the hob and then performing machining, the mounting frame 1 includes a hob aligning tool rest, the hob aligning tool rest includes a frame 1, a hob fleeing centering mechanism and a tool rest sliding plate 5; the tool rest sliding plate 5 is provided with a tool bar 6, and the tool bar 6 comprises a small shaft end, a large shaft end and a mounting part; the cutter fleeing centering mechanism is fixed on the rack 1 and used for moving the cutter rest sliding plate 5 to realize cutter fleeing;
the tool rest sliding plate 5 is also provided with a main shaft 8, the main shaft 8 is connected with the large shaft end and used for driving the tool bar 6 to rotate, and the surface of the main shaft 8 facing the tool bar 6 is a reference surface; a small shaft end spacer bush, a milling cutter and a large shaft end spacer bush are sequentially arranged on the mounting part from far to near to the main shaft 8; the distance from the end face of the large shaft end to the reference surface of the main shaft 8 is D, and the length of the spacer bush of the large shaft end is C;
the device also comprises an alignment mechanism, a main shaft driving mechanism 7 and a control unit; the main shaft driving mechanism 7 is fixed on the tool rest sliding plate 5 and is used for driving the main shaft 8 to rotate;
the alignment mechanism comprises an alignment mandrel 11 and an alignment block 12; the thickness of the alignment block 12 is B, and the diameter of the alignment mandrel 11 is F; the alignment block 12 is attached to one surface, far away from the main shaft 8, of the spacer bush at the end of the large shaft, and the center of the alignment block 12 is aligned with the center of the mounting part; the alignment mandrel 11 is detachably arranged on the workbench, and the alignment mandrel 11 is concentric with the workbench; the alignment mandrel 11 and the main shaft 8 are positioned on the same side of the alignment block 12, and the distance between the circular surface of the alignment mandrel 11 and the alignment block 12 is E; the moving direction from the small shaft end to the large shaft end is the positive Y-axis direction;
the control unit is used for calculating H (B/2 + E + F/2), taking the value of H as an alignment value, controlling the cutter fleeing centering mechanism to flee the cutter H in the forward direction of the Y axis, initializing a zero point of the Y axis, and calculating and storing the distance A between the reference plane of the main shaft 8 and the center of the workbench at the moment (B/2 + C + D);
the control unit is used for inputting the width B 'of the milling cutter, calculating the distance A' from the reference surface of the main shaft 8 to the center of the milling cutter according to the width B 'of the milling cutter, the length C of the spacer at the end of the large shaft and the distance D from the end surface of the cutter bar 6 to the reference surface of the main shaft 8, and comparing the numerical values of A' and A; if A 'is larger than A, the control unit controls the cutter fleeing centering mechanism to flee the cutter (A' -A) in the positive direction of the Y axis; if A 'is less than A, the control unit controls the cutter fleeing centering mechanism to flee the cutter in the negative direction of the Y axis (A-A');
an angular contact bearing 10 is further fixedly arranged on the tool rest sliding plate 5, and the main shaft 8 is matched with the angular contact bearing 10; a pull rod capable of sliding along the axial direction of the main shaft 8 is arranged in the main shaft; one end of the pull rod close to the cutter bar 6 is fixedly provided with a large blind rivet, and the large shaft end of the cutter bar 6 is fixedly provided with a small blind rivet; the clamping jaw 9 is used for clamping the large blind rivet and the small blind rivet, one end of the clamping jaw 9 is clamped in the clamping groove of the large blind rivet, the other end of the clamping jaw 9 can slide in the clamping groove of the small blind rivet, the small blind rivet is clamped when the clamping jaw 9 slides to one side of the pull rod, and the small blind rivet is loosened when the clamping jaw 9 slides to one side of the cutter bar 6;
the cutter fleeing centering mechanism comprises a screw rod 3 and a fleeing centering motor 2 for driving the screw rod 3 to rotate, and a nut 4 of the screw rod 3 is fixed with a cutter rest sliding plate 5; the channeling motor 2 is electrically connected with the control unit;
the alignment mandrel 11 comprises a first insulating part and a first conductive part, a positioning short rod is integrally formed on the first conductive part, the positioning short rod faces the alignment block 12, and the free end of the positioning short rod is an upward inclined alignment inclined surface; a pressure sensor is embedded at the free end of the positioning short rod, a wiring hole is formed in the positioning short rod, and the pressure sensor is electrically connected with the control unit through the wiring hole;
the alignment block 12 comprises a second insulating part and a second conductive part, and one surface of the second conductive part facing the alignment mandrel 11 is provided with an alignment groove corresponding to the free end of the positioning short rod; the upper end of the first conductive part and the lower end of the second conductive part are respectively electrically connected with a wire resistance acquisition circuit;
the control unit is also electrically connected with the resistance acquisition circuit; the control unit is also used for comparing the acquired resistance value with a preset standard value, and controlling the cutter fleeing centering mechanism to flee the cutter in the Y-axis direction according to the feedback data of the pressure sensor when the comparison result shows that an error exists.
The specific implementation process is as follows:
before alignment, the alignment mandrel 11 is mounted on a workbench and is corrected, so that the alignment mandrel 11 is concentric with the workbench.
When alignment is carried out, after the distance E between the circular surface of the alignment mandrel 11 and the alignment block 12 is measured, the control unit calculates the distance H for alignment compensation to be B/2+ E + F/2, controls the cutter fleeing centering mechanism to flee the cutter H towards the positive direction of the Y axis, and enables the center of the alignment block 12 to be aligned with the center of the workbench, so that the reference surface of the main shaft 8 is determined and guaranteed to be in the designed theoretical position, namely the distance A between the reference surface of the main shaft 8 and the center of the workpiece is guaranteed to be A (A is B/2+ C + D). At this time, the control unit sets the zero point of the Y axis and stores the A value in the control unit. At this time, the mounting portion center is aligned with the workpiece center.
However, since the milling cutter center and the mounting portion center are not always exactly aligned, the milling cutter width B 'is input to the control unit before the device is used, and the control unit calculates the distance a' ═ B '/2 + C + D from the reference surface of the spindle 8 based on the milling cutter width B', the major axis end spacer length C, and the distance D from the end surface of the holder 6 to the reference surface of the spindle 8.
Then, the control unit compares the values of A 'and A, if A' is equal to A, the milling cutter center is aligned with the workbench center, and no adjustment is needed. If A 'is greater than A, the distance between the center of the milling cutter and the reference surface of the spindle 8 is larger than the distance between the center of the workbench and the reference surface of the spindle 8, so that the control unit controls the cutter fleeing centering mechanism to flee the cutter (A' -A) in the positive direction of the Y axis, and the center of the milling cutter is aligned with the center of the workbench. If A '< A, it means that the distance between the center of the milling cutter and the reference surface of the spindle 8 is smaller than the distance between the center of the table and the reference surface of the spindle 8, and therefore, the control unit controls the cutter fleeing centering mechanism to flee the cutter in the negative direction of the Y-axis (A-A') so that the center of the milling cutter is aligned with the center of the table.
Thus, through the two alignment operations, the first alignment enables the center of the mounting part to be aligned with the center of the workbench, and even if the center of the milling cutter is not strictly aligned with the center of the mounting part, the difference is small; and the second alignment is used for aligning the center of the milling cutter with the center of the workbench, and can be quickly and accurately completed due to the first alignment as a basis.
Therefore, the centering operation of the milling cutter can be quickly and accurately realized.
Besides, when measuring the distance E between the circular surface of the alignment mandrel 11 and the alignment block 12, the free end of the positioning short rod can enter the alignment groove of the alignment block by controlling the movement of the cutter fleeing centering mechanism.
Because the upper end of the first conductive part and the lower end of the second conductive part are respectively electrically connected with the resistance acquisition circuit through one wire, and the control unit is electrically connected with the resistance acquisition circuit, in the process, the control unit can know the resistance values of the first conductor and the second conductor through the resistance acquisition circuit. According to a resistance calculation formula R which is rho L/S, the contact conditions of the alignment inclined plane and the alignment groove are different, the contact surface S is different, and the obtained resistance is different. In other words, according to the resistance values of the first conductor and the second conductor, the control unit can know the fit degree between the free end of the positioning short rod and the positive groove.
The control unit compares the collected resistance value with a preset standard value (the free end of the positioning short rod is completely matched with the alignment groove), and when an error exists in a comparison result, the matching degree is indicated to be problematic, or the displacement of the alignment block 12 is insufficient, or the positioning short rod and the alignment block 12 are too large in contact force, so that the alignment mandrel 11 is bent.
Therefore, the control unit controls the cutter fleeing centering mechanism to flee the cutter in the Y-axis direction according to the feedback data of the pressure sensor. If the feedback data of the pressure sensor is too small, the displacement of the alignment block 12 to the direction of the alignment mandrel 11 is insufficient; if the feedback data of the pressure sensor is too large, it indicates that the displacement of the alignment block 12 to the alignment mandrel 11 is too large, resulting in the inclination of the alignment mandrel 11 (the free end of the short positioning rod and the alignment groove can not be completely matched).
In this way, the value of E can be fixed, and errors in measurement are avoided. Meanwhile, by the mode, when the distance E between the circular surface of the alignment mandrel 11 and the alignment block 12 is measured, the alignment mandrel 11 can be ensured to be in a straight state, and errors caused by bending of the alignment mandrel 11 can be avoided.
The installation mode of the alignment mandrel 11 and the alignment block 12 can be installed by a person skilled in the art in a marking and fixing mode according to specific situations, which belongs to the conventional technology and is not described herein again; the resistance acquisition circuit is also conventional to those skilled in the art and will not be described further herein.
The foregoing is merely an example of the present invention, and common general knowledge in the field of known specific structures and characteristics is not described herein in any greater extent than that known in the art at the filing date or prior to the priority date of the application, so that those skilled in the art can now appreciate that all of the above-described techniques in this field and have the ability to apply routine experimentation before this date can be combined with one or more of the present teachings to complete and implement the present invention, and that certain typical known structures or known methods do not pose any impediments to the implementation of the present invention by those skilled in the art. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (10)
1. The variable pressure angle hobbing method is characterized by comprising the following steps: s1, receiving parameters of the gear to be machined, wherein the parameters comprise a gear module m1 and a gear helix angle beta;
s2, receiving hob parameters including a hob modulus m0 and a hob lead angle gamma;
s3, simulating a simulated gear which can be directly processed by a hob, wherein in the parameters of the simulated gear, a simulation module m2 is m0, a pressure angle alpha 2 is alpha 0, and a simulation helix angle is beta 2;
s4, obtaining (pi multiplied by m1 multiplied by Z1)/sin beta (pi multiplied by m2 multiplied by Z2)/sin beta 2 according to the fact that the lead angle of the simulated gear and the gear to be machined is equal, wherein Z1 is the number of teeth of the gear to be machined, Z2 is the number of teeth of the simulated gear, and Z1 is Z2; obtaining β 2 ═ sin ^ (-1) ((m0 × sin β)/m 1);
s5, calculating the actual installation angle eta of the hob, beta 2 +/-gamma, sin ^ (-1) ((m0 multiplied by sin beta)/m 1) +/-gamma;
and S6, ending.
2. The variable pressure angle hobbing method according to claim 1, wherein: in S1, the received gear parameters to be processed further include a gear pressure angle alpha 1; in S2, the received hob parameters further include a hob pressure angle α 0; further comprising:
s21, determining whether or not m1 × cos α 1 is m2 × cos α 2, based on the received gear parameters and hob parameters; if so, go to S3.
3. The variable pressure angle hobbing method according to claim 2, wherein: s22, reporting errors, wherein the hob and the gear to be machined are not matched, the gear to be machined cannot be machined by the hob, and the process goes to S6; if m1 × cos α 1 is not satisfied in S21, the process proceeds to S22 by m2 × cos α 2.
4. The variable pressure angle hobbing method according to claim 3, wherein: s22, reporting errors, wherein the hob and the gear to be machined are not matched, the gear to be machined cannot be machined by the hob, and the process goes to S6; if m1 × cos α 1 is not satisfied in S21, the process proceeds to S22 by m2 × cos α 2.
5. The variable pressure angle hobbing method according to claim 4, wherein: in S21, when it is determined whether or not m1 × cos α 1 is m2 × cos α 2, the accuracy of the determination is not less than three decimal places.
6. The variable pressure angle hobbing method of claim 5, further comprising:
s51, storing the actual installation angle of the hob, and the corresponding gear parameter to be processed and the hob parameter;
s31, outputting the matched actual installation angle, and turning to S6;
in S3, matching is carried out from the stored actual installation angle according to the received gear parameters to be processed and the roller parameters, and if the matching is successful, the operation goes to S31; if the matching is not successful, a simulated gear which can be directly processed by the hobbing cutter is simulated.
7. The variable pressure angle hobbing method according to claim 6, wherein: in S51, the data is stored in the cloud server.
8. The variable pressure angle hobbing method according to claim 7, wherein: the method is implemented by the aid of the APP of the mobile phone
9. The variable pressure angle hobbing method according to claim 8, wherein: in S22, the error is reported by voice.
10. The variable pressure angle hobbing method according to claim 8, wherein: in S22, the error is reported by sound and light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011380320.6A CN112548229A (en) | 2020-11-30 | 2020-11-30 | Variable pressure angle gear hobbing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011380320.6A CN112548229A (en) | 2020-11-30 | 2020-11-30 | Variable pressure angle gear hobbing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112548229A true CN112548229A (en) | 2021-03-26 |
Family
ID=75046798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011380320.6A Pending CN112548229A (en) | 2020-11-30 | 2020-11-30 | Variable pressure angle gear hobbing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112548229A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391827A (en) * | 2011-02-24 | 2013-11-13 | 三菱电机株式会社 | Electric discharge machining device and electric discharge machining system |
| JP2015030067A (en) * | 2013-08-05 | 2015-02-16 | 株式会社ジェイテクト | Working device and working method for variable gear ratio rack |
| CN105729475A (en) * | 2016-04-28 | 2016-07-06 | 迈力（北京）机器人科技有限公司 | Method for establishing tin soldering process libraries and system applied to same |
-
2020
- 2020-11-30 CN CN202011380320.6A patent/CN112548229A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391827A (en) * | 2011-02-24 | 2013-11-13 | 三菱电机株式会社 | Electric discharge machining device and electric discharge machining system |
| JP2015030067A (en) * | 2013-08-05 | 2015-02-16 | 株式会社ジェイテクト | Working device and working method for variable gear ratio rack |
| CN105729475A (en) * | 2016-04-28 | 2016-07-06 | 迈力（北京）机器人科技有限公司 | Method for establishing tin soldering process libraries and system applied to same |
Non-Patent Citations (1)
| Title |
|---|
| 刘树香等: "变参数滚刀加工非标齿轮的探讨", 《机械工程师》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211759966U (en) | Accurate positioning type drilling equipment for part mould for motor car | |
| CN105108578A (en) | Apparatus and method for online testing numerical control lathe and intelligently compensating cutter abrasion | |
| CN104827349A (en) | Machine tool position detecting device | |
| CN1603043A (en) | Process and device for the aligning of workpiece with pre-cut teeth on gear finishing machines | |
| CN112548229A (en) | Variable pressure angle gear hobbing method | |
| EP2735928B1 (en) | Method for adjusting a workpiece-supporting assembly of a machining centre for workpiece machining | |
| WO2022041525A1 (en) | Printed circuit board drilling machining control apparatus and method, and drilling device | |
| CN112276571B (en) | Inclined hole machining method | |
| CN112548597B (en) | Numerical control slot milling machine tool rest capable of automatically centering | |
| CN203664761U (en) | Open type general positioning device | |
| CN205984099U (en) | Open -type numerically -controlled machine tool experimental platform | |
| CN104881555A (en) | Design method for parameterized involute spline broach | |
| JP2002022433A (en) | Sensor and equipment for measuring work shape | |
| CN211163160U (en) | Machine tool screw temperature compensation device and machine tool with error compensation function | |
| JPH10296339A (en) | Bending method, and its device | |
| CN105825761A (en) | Open numerical control machine tool experiment platform | |
| CN113458670A (en) | Multi-degree-of-freedom rapid positioning composite welding device | |
| CN112596466B (en) | Centering method of numerical control slot milling machine | |
| CN112548177B (en) | Vertical numerical control slot milling machine | |
| CN111545812A (en) | Method for machining large rotating shaft groove based on grating indexing closed-loop detection system | |
| EP3318840B1 (en) | Partition measurement device and method for verifying the position accuracy of a trajectory executing machine part | |
| JP2020082225A (en) | Analyzer, analysis method and processing system | |
| CN218396911U (en) | Guide mechanism | |
| CN213225145U (en) | Device suitable for accurate angle positioning of tool holder of CNC (computer numerical control) machine tool | |
| CN216206410U (en) | Steering engine mechanical zero calibration device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210326 |