CN220739353U - Double-biting-angle gear twisting cutter capable of improving strength and service life of cutter teeth - Google Patents
Double-biting-angle gear twisting cutter capable of improving strength and service life of cutter teeth Download PDFInfo
- Publication number
- CN220739353U CN220739353U CN202322221854.XU CN202322221854U CN220739353U CN 220739353 U CN220739353 U CN 220739353U CN 202322221854 U CN202322221854 U CN 202322221854U CN 220739353 U CN220739353 U CN 220739353U
- Authority
- CN
- China
- Prior art keywords
- tooth
- cutter
- angle
- section
- fine
- 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.)
- Active
Links
- 238000005096 rolling process Methods 0.000 abstract description 15
- 238000013461 design Methods 0.000 abstract description 7
- 238000012937 correction Methods 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 238000012545 processing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Abstract
The utility model relates to the technical field of precise gear rolling, and discloses a double-biting-angle gear rolling cutter for improving the strength and the service life of cutter teeth, wherein a first section of rough gear rolling and a second section of rough gear rolling are arranged on a rough gear rolling section, and a first biting angle is formed in the horizontal direction of the first section of rough gear rolling and the horizontal direction of a fine gear rolling section; the second section of coarse tooth rubbing and the fine tooth rubbing form a second biting angle in the horizontal direction, and the first biting angle is used for forming most of spline teeth and is the area with the largest stress in the whole tooth rubbing stage; the second biting angle finishes the formation of a small amount of coarse and fine graining of the residual allowance, and the graining stress of the second biting section is reduced relative to that of the first biting section; the tooth height is highest in the fine tooth rubbing stage, the strength is relatively weak, but the design of the second biting angle is introduced, so that the tooth shape calibration and a small amount of tooth shape correction are mainly completed in the fine tooth rubbing stage, the tooth rubbing load of the cutter tooth is greatly reduced, and the cutter tooth strength is improved.
Description
Technical Field
The utility model relates to the technical field of precise gear rolling, in particular to a double-biting-angle gear rolling cutter for improving the strength and the service life of cutter teeth.
Background
The precise tooth rubbing technology is a non-cutting processing technology for metal plastic forming and is an advanced manufacturing technology in the modern machinery manufacturing industry. Compared with the traditional cutting processing method, the method has the advantages of high production efficiency, strong bearing capacity, high processing precision, long service life of the cutter and the like, and can be widely applied to products such as new energy sources and the like. However, in the process of developing the new energy product engine shaft technology, the cutter tooth strength of the conventionally designed gear-rubbing cutter is weak because the total tooth height of the product is too high, so that the gear-rubbing cutter frequently performs gear-rubbing and has a low service life (2000-6500 single service lives), and the cost of a single cutter is high.
Because the tooth rubbing cutter is subjected to different forces at different stages and is limited by the tooth height, the pressure angle and the involute starting point of a workpiece, the design space of the cutter is very small, the conventional design method is difficult to ensure the balance of the stress of each stage of the cutter on a large tooth height spline, the problem that the cutter is excessively high in force generated by the fine rubbing and withdrawing sections and is broken and broken is easily caused, the service life of the cutter is seriously influenced, and the processing cost of enterprises is increased.
Patent CN109967669a discloses a spline gear-rubbing cutter with guiding processing, wherein a cutter body and spline teeth are disclosed, wherein the cutter body is provided with a coarse gear-rubbing, a fine gear-rubbing, a calibration gear and a withdrawal gear which are sequentially arranged, the coarse gear-rubbing, the fine gear-rubbing, the calibration gear and the withdrawal gear are sequentially distributed along the length direction of the cutter body, but in the patent, the coarse gear-rubbing and the fine gear-rubbing are on the same plane, and the cutter cannot be subjected to stress decomposition, so that the risk of influencing the service life of the cutter still exists, and the spline is damaged, failed and has low service life.
Therefore, how to provide a design thought and method of a gear-rubbing cutter structure and parameters according to the requirement of a large-tooth-height spline is particularly important for the strength and stress of cutter teeth.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model aims to provide the double-biting-angle gear-rubbing cutter for improving the strength and the service life of cutter teeth, so as to solve the technical problems of low service life and high processing cost of the gear-rubbing cutter in the prior art.
The utility model is realized by the following technical scheme:
a double-biting angle gear-rubbing cutter for improving the strength and the service life of cutter teeth comprises a gear cutter body, wherein a rough gear-rubbing section, a fine gear-rubbing section and a cutter-retracting section are sequentially arranged on the gear cutter body along the movement direction of a workpiece with processed spline teeth; wherein the rough gear-rubbing section and the cutter-withdrawing section are helical teeth, and the fine gear-rubbing section is a horizontal tooth; the coarse gear section comprises a first section of coarse gear and a second section of coarse gear, wherein the first section of coarse gear and the horizontal direction of the fine gear section form a first biting angle; the horizontal direction of the second section coarse twisting teeth and the horizontal direction of the fine twisting teeth form a second biting angle.
Preferably, the angle of the first bite angle is greater than the angle of the second bite angle.
Preferably, the first biting angle is in the range of 0.05-0.2 degrees;
preferably, the second biting angle is in the range of 0.02-0.1 degrees;
preferably, the length of the first section of coarse pick is greater than the length of the second section of coarse pick.
Preferably, a tooth root arc is formed between adjacent fine twisting teeth in the fine twisting tooth section, and the radian of the tooth root arc is larger than 0.2 times of the modulus of the spline tooth workpiece.
Preferably, the tooth height of the fine twisting teeth in the fine twisting tooth section is larger than the tooth root height of the spline tooth workpiece.
Further, the two side walls of the fine twisting teeth and the tooth root form a first pressure angle and a second pressure angle respectively.
Further, the angle range of the first pressure angle is 25-30 degrees; the second pressure angle is in an angle range of 25.5-30.5 degrees.
Preferably, the inclination angle of the cutter withdrawal tooth section is 10-15 degrees.
Compared with the prior art, the utility model has the following beneficial technical effects:
the utility model provides a double-biting-angle gear twisting cutter for improving the strength and the service life of cutter teeth, wherein a first section of coarse twisting teeth and a second section of coarse twisting teeth are arranged on a coarse twisting tooth section, and a first biting angle is formed in the horizontal direction of the first section of coarse twisting teeth and a fine twisting tooth section; the second section of coarse tooth rubbing and the fine tooth rubbing form a second biting angle in the horizontal direction, and the first biting angle is used for forming most of spline teeth and is the area with the largest stress in the whole tooth rubbing stage; the second biting angle finishes the formation of a small amount of coarse and fine graining of the residual allowance, and the graining stress of the second biting section is reduced relative to that of the first biting section; the tooth height is highest in the fine tooth rubbing stage, the strength is relatively weak, but the design of the second biting angle is introduced, so that the tooth shape calibration and a small amount of tooth shape correction are mainly completed in the fine tooth rubbing stage, the tooth rubbing load of the cutter tooth is greatly reduced, and the cutter tooth strength is improved. The double-biting angle structure designed by the utility model effectively reduces the tooth-rubbing forming stress of the fine tooth-rubbing section of the tooth-rubbing cutter, enhances the tooth strength of the fine tooth-rubbing section, prolongs the service life of the cutter by about 3 times, and solves the problems of tooth dropping, edge collapse and low service life of the large-tooth-height spline tooth-rubbing cutter.
Further, tooth root circular arcs are formed between adjacent fine twisting teeth in the fine twisting tooth sections, the radian of each tooth root circular arc is larger than 0.2 times of the modulus of a spline tooth workpiece, the strength of tooth roots of a tooth twisting cutter is enhanced, and the service life of the cutter is prolonged.
Furthermore, the tooth height of the fine twisting teeth in the fine twisting teeth section is larger than the tooth root height of the spline teeth workpiece, the stress of the fine twisting teeth is reduced due to the double-biting angle structural design of the coarse twisting sections, the tooth shape correction quantity is reduced, the tooth root height of the fine twisting teeth mold can be correspondingly reduced to 1.1-1.2 times of the tooth crest height of the spline teeth, and the cutter tooth strength is improved.
Drawings
FIG. 1 is a schematic view of a gear rolling process according to the present utility model;
FIG. 2 is a schematic view of a double bite angle gear cutter according to the present utility model;
FIG. 3 is a schematic diagram of the method of recipe A in FIG. 2.
In the figure: 1-a tooth cutter body; 11-rough gear rolling sections; 12-fine twisting tooth sections; 13-retracting the cutter tooth segment; 111-a first bite angle; 112-a second bite angle; 121-root arc; 122-tooth height; 123-a first pressure angle; 124-second pressure angle; 131-exit angle.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model is described in further detail below with reference to the attached drawing figures:
the utility model aims to provide a double-biting-angle gear-rubbing cutter for improving the strength and the service life of cutter teeth, so as to solve the technical problems of low service life and high processing cost of the gear-rubbing cutter in the prior art.
Referring to fig. 1, the utility model provides a double-biting angle gear cutter for improving the strength and the service life of cutter teeth, which comprises a cutter body 1, wherein a rough gear-rolling section 11, a fine gear-rolling section 12 and a cutter-withdrawing section 13 are sequentially arranged on the cutter body 1 along the movement direction of a workpiece with processed spline teeth; wherein the rough gear-rubbing section 11 and the cutter-retracting section 13 are helical teeth, and the fine gear-rubbing section 12 is a horizontal tooth; the coarse twisting section 11 comprises a first section of coarse twisting teeth and a second section of coarse twisting teeth, wherein the first section of coarse twisting teeth and the fine twisting teeth 12 form a first biting angle 111 in the horizontal direction; the horizontal orientation of the second coarse and fine tooth segments 12 forms a second bite angle 112.
Specifically, the angle of the first biting angle 111 is larger than the angle of the second biting angle 112.
Specifically, the angle range of the first biting angle 111 is 0.05 ° to 0.2 °;
specifically, the second biting angle 112 has an angle range of 0.02 ° to 0.1 °;
specifically, the length of the first section of rough twisting teeth is greater than that of the second section of rough twisting teeth.
Specifically, a tooth root arc 121 is formed between adjacent fine twisting teeth in the fine twisting tooth section 12, and the radian of the tooth root arc 121 is greater than 0.2 times of the modulus of the spline tooth workpiece.
Specifically, the tooth height 122 of the fine pick in the fine pick section 12 is greater than the tooth root height of the spline tooth workpiece.
Wherein, the two side walls of the fine twisting teeth and the tooth root form a first pressure angle 123 and a second pressure angle 124 respectively.
Wherein the angle range of the first pressure angle 123 is 25-30 degrees; the second pressure angle 124 is in the range of 25.5 deg. to 30.5 deg..
Specifically, the inclination angle of the cutter withdrawal tooth section 13 is 10 to 15 °.
According to the figure 3, when in gear twisting, the upper and lower gear twisting cutters are arranged on the sliding table to linearly move in opposite directions, the workpiece blank is supported by the front and rear center points, the workpiece is driven to rotate by the relative movement of the upper and lower cutters, the workpiece is gradually extruded by the tooth lift generated by the biting angle of the cutters to generate plastic deformation, the spline tooth part is finally formed, and the whole rough and finish machining process of the workpiece can be completed by one-time linear movement of the upper and lower gear twisting cutters.
The gear twisting cutter can be divided into 3 parts of rough gear twisting, fine gear twisting and withdrawing gear along the length direction of the cutter according to different tooth shape functions of all parts, and the structure of the gear twisting cutter is shown in figure 1. In the rough gear rolling stage, the blank has relatively large acting force on the die because the die is just bitten into, and plays a main role in forming the spline. The tooth top line of the fine rubbing tooth is parallel to the bottom surface, the tooth shape precision of the position is very important, the size of the workpiece, the surface roughness and the precision are determined, and the effect of the blank on the die is relatively small at the stage. The angle between the tooth top line and the bottom surface of the cutter withdrawal tooth is the withdrawal angle phi, so that the spline with the tooth formed is driven by the tooth twisting cutter to separate from the upper tooth twisting cutter and the lower tooth twisting cutter while rotating, and the spline is not plastically deformed at the stage and only elastically recovered.
The double-biting-angle gear twisting cutter for improving the strength and the service life of the cutter teeth has the following working processes:
loading the standard part into a machine tool bracket, clamping by using a machine tool center, checking the jump of the standard part, and ensuring that the jump is less than 0.005mm;
mounting a gear rolling cutter, ensuring cutter mounting precision and enabling the end face to jump within 0.03 mm;
the adjusting center is used for adjusting the stroke positions of front and rear center strokes according to the structure of a processed product and the position of a rubbed spline;
installing a workpiece, cleaning center holes at two ends of the workpiece, loading the workpiece into a machine tool bracket, and clamping by using a machine tool center;
programming an NC machining program, and setting parameters such as a feeding speed, a feeding position, a safety distance and the like;
and starting a circulation program to process.
In view of the above-mentioned, it is desirable,
the utility model provides a double-biting-angle gear twisting cutter for improving the strength and the service life of cutter teeth, wherein a first section of coarse twisting teeth and a second section of coarse twisting teeth are arranged on a coarse twisting tooth section, and a first biting angle is formed in the horizontal direction of the first section of coarse twisting teeth and a fine twisting tooth section; the second section of coarse tooth rubbing and the fine tooth rubbing form a second biting angle in the horizontal direction, and the first biting angle is used for forming most of spline teeth and is the area with the largest stress in the whole tooth rubbing stage; the second biting angle finishes the formation of a small amount of coarse and fine graining of the residual allowance, and the graining stress of the second biting section is reduced relative to that of the first biting section; the tooth height is highest in the fine tooth rubbing stage, the strength is relatively weak, but the design of the second biting angle is introduced, so that the tooth shape calibration and a small amount of tooth shape correction are mainly completed in the fine tooth rubbing stage, the tooth rubbing load of the cutter tooth is greatly reduced, and the cutter tooth strength is improved. The double-biting angle structure designed by the utility model effectively reduces the tooth-rubbing forming stress of the fine tooth-rubbing section of the tooth-rubbing cutter, enhances the tooth strength of the fine tooth-rubbing section, prolongs the service life of the cutter by about 3 times, and solves the problems of tooth dropping, edge collapse and low service life of the large-tooth-height spline tooth-rubbing cutter.
Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the utility model without departing from the spirit and scope of the utility model, which is intended to be covered by the claims.
Claims (10)
1. The double-biting angle gear-rubbing cutter for improving the strength and the service life of cutter teeth is characterized by comprising a gear cutter body (1), wherein a rough gear-rubbing section (11), a fine gear-rubbing section (12) and a cutter-retracting section (13) are sequentially arranged on the gear cutter body (1) along the movement direction of a workpiece with processed spline teeth; wherein the rough gear twisting section (11) and the cutter retracting section (13) are helical teeth, and the fine gear twisting section (12) is a horizontal tooth; the coarse gear section (11) comprises a first section of coarse gear and a second section of coarse gear, wherein the first section of coarse gear and the fine gear section (12) form a first biting angle (111) in the horizontal direction; the second coarse and fine tooth segments (12) form a second bite angle (112) in the horizontal direction.
2. The double bite angle tooth rub cutter according to claim 1 wherein the angle of the first bite angle (111) is greater than the angle of the second bite angle (112).
3. The double bite angle tooth rub cutter of claim 1, wherein the first bite angle (111) is in the range of 0.05 ° to 0.2 °.
4. The double bite angle tooth rub cutter of claim 1, wherein the second bite angle (112) is in the range of 0.02 ° to 0.1 °.
5. The double entry angle tooth cutter of claim 1 wherein the length of the first section of coarse tooth is greater than the length of the second section of coarse tooth.
6. The double entry angle tooth cutter for improving cutter tooth strength and life of claim 1 wherein a root arc (121) is formed between adjacent fine teeth in said fine tooth segment (12), said root arc (121) having an arc greater than 0.2 times the spline tooth workpiece modulus.
7. The double entry angle tooth cutter for improving cutter tooth strength and life as defined in claim 1 wherein the tooth height (122) of the fine tooth in said fine tooth segment (12) is greater than the tooth root height of the spline workpiece.
8. The double entry angle tooth cutter for improving cutter tooth strength and life as defined in claim 7 wherein said fine tooth sidewalls and root define first (123) and second (124) pressure angles, respectively.
9. The double bite angle tooth rub cutter for improving cutter tooth strength and life according to claim 8 wherein the first pressure angle (123) is in the range of 25 ° to 30 °; the second pressure angle (124) has an angle range of 25.5 DEG to 30.5 deg.
10. A double bite angle tooth rub cutter according to claim 1 for improving the strength and life of cutter teeth, characterized in that the angle of inclination of the relief tooth section (13) is 10 ° to 15 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322221854.XU CN220739353U (en) | 2023-08-17 | 2023-08-17 | Double-biting-angle gear twisting cutter capable of improving strength and service life of cutter teeth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322221854.XU CN220739353U (en) | 2023-08-17 | 2023-08-17 | Double-biting-angle gear twisting cutter capable of improving strength and service life of cutter teeth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220739353U true CN220739353U (en) | 2024-04-09 |
Family
ID=90565178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322221854.XU Active CN220739353U (en) | 2023-08-17 | 2023-08-17 | Double-biting-angle gear twisting cutter capable of improving strength and service life of cutter teeth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220739353U (en) |
-
2023
- 2023-08-17 CN CN202322221854.XU patent/CN220739353U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1046647C (en) | Tool feeding method in gear manufacturing processes | |
| JP6721223B2 (en) | Spherical involute tooth profile spiral bevel gear cutting method | |
| CN1931469A (en) | Precise multifunctional incremental pressing die and its making process | |
| EP3263244B1 (en) | Rolling flat die for screw component and rolling working method | |
| CN220739353U (en) | Double-biting-angle gear twisting cutter capable of improving strength and service life of cutter teeth | |
| CN109241613B (en) | Method for determining cutter root trimming parameters of spiral bevel gear | |
| EP0533456B1 (en) | Thread forming method and apparatus | |
| CN101323035A (en) | Digital control continuous finishing method of large pitch ball screw nut | |
| CN100448613C (en) | Contour method for machining elliptic cam | |
| CN1820871A (en) | Plate type wedge lateral rolling forming method for eccentric step shalf | |
| CN1338346A (en) | Technology for manufacturing ballscrew gear | |
| CN110899831A (en) | Broaching process method of small-modulus internal gear | |
| CN113414453B (en) | Gear machining method and cutter | |
| JP2007283452A (en) | Cutting method | |
| US6449846B2 (en) | Toothed gear manufacturing method | |
| CN101259546A (en) | Micro line segment gear cutter hob | |
| CN1054562C (en) | Ring Surface Worm Shaping method | |
| CN201275643Y (en) | Helical tooth type broaching tool | |
| CN1070749C (en) | Tool feeding method | |
| JP4827562B2 (en) | Method for manufacturing rolling dies | |
| JP2006187796A (en) | Rolling die and method for manufacturing rolling die | |
| CN109746379B (en) | Cold rolling forming method for rack | |
| CN1907586A (en) | Plate-type wedge rolling precision forming method for camshaft | |
| CN112122714B (en) | Fly cutter for machining curve face gear and machining and using method thereof | |
| CN209811114U (en) | Spline gear rubbing cutter with guiding processing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |