CN112719467B - Face gear scraping processing method - Google Patents
Face gear scraping processing method Download PDFInfo
- Publication number
- CN112719467B CN112719467B CN202011515534.XA CN202011515534A CN112719467B CN 112719467 B CN112719467 B CN 112719467B CN 202011515534 A CN202011515534 A CN 202011515534A CN 112719467 B CN112719467 B CN 112719467B
- Authority
- CN
- China
- Prior art keywords
- cutter
- gear
- face
- workpiece
- processing
- 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
- 238000007790 scraping Methods 0.000 title claims abstract description 21
- 238000003672 processing method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 30
- 230000008569 process Effects 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000010862 gear shaping Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F9/00—Making gears having teeth curved in their longitudinal direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
Abstract
The invention relates to a face gear scraping processing method, which adopts a method of cutting a workpiece by a cutter to process the face gear, wherein the cutter and the workpiece are in space staggered shaft face worm transmission, namely, the cutter and the workpiece form a space cylindrical face worm pair, so that the face gear scraping processing is realized. The processing method inherits the technical advantages of tooth scraping of the cylindrical gear, and has higher production efficiency and processing precision; the method of the invention uses the principle of space worm drive to realize the enveloping of the tooth surface, and realizes the material removal by adjusting the offset of the cutter and the workpiece in the processing process.
Description
Technical Field
The invention relates to a processing technology of a face gear, in particular to a face gear tooth scraping processing method.
Background
The face gear is used for transmitting forces and motions between intersecting and staggered shafts, is widely applied to automobiles, engineering machinery and aerospace equipment, and has the advantages of being strong in bearing capacity, insensitive to installation errors, adjustable in contact area and the like.
The processes of the prior gears are mainly focused on gear shaping, roll-grinding (worm cutter), milling-grinding (dish cutter): the gear shaping is the most commonly used processing method of face gears, realizes cutting based on the meshing of simulated large and small gears, can process all types of face gears by enabling the gear shaping cutter to realize partial contact more than a small gear, and has good process flexibility; the worm cutter rolling-grinding process is based on the principle of transmission of a face gear and an imaginary rack, realizes adjustment of a contact area by adjusting radial feeding, has extremely high processing efficiency, can produce radical cutting when processing the face gear with smaller tooth number and cone angle, and has higher requirements on a machine tool and a cutter; the milling-grinding process of the disc-shaped cutter is based on the principle of meshing transmission of the face gear and the single-tooth rack, the cutter is simple in geometry, and tooth surface modification can be achieved through multi-axis linkage.
The analysis shows that the existing face gear shaping process has the best flexibility, can manufacture inner and outer conical gears, but has low efficiency and can not realize free modification of tooth surfaces; the worm cutter rolling-grinding process has high efficiency, but has higher requirements on a machine tool and a cutter, and cannot process an inner conical surface gear; the milling-grinding process of the disc cutter can realize tooth surface modification, but has lower processing efficiency.
The tooth scraping process is an efficient and high-precision manufacturing process aiming at the cylindrical gear and the gear ring, can only be applied to cylindrical gear parts (comprising an inner gear, an outer gear, a spline, a coupling and the like), does not see other processing theory and product objects, and limits the popularization of the technology to a certain extent.
Disclosure of Invention
The invention aims to solve the technical problem of providing a face gear scraping processing method which has higher production efficiency and processing precision.
The technical scheme adopted for solving the technical problems is as follows: the face gear scraping processing method is characterized in that a face gear is processed by adopting a method of cutting a workpiece by a cutter, the cutter and the workpiece are in space staggered shaft face worm transmission, namely, the cutter and the workpiece form a space cylindrical face worm pair, and the face gear scraping processing is realized.
In the scheme, parameters of the face gear and the cutter meet the following relation:
wherein Σ is the angle of processing, β g Is the helix angle of the gear, beta c R is the helix angle of the cutter c Is the reference circle radius of the cutter, r g Is the pitch circle radius of the gear, z g For the number of teeth, z g For the number of teeth of the cutter, m nc Is the normal surface modulus of the cutter, m ng Is the gear normal surface modulus.
In the scheme, the cutter is fed along the horizontal direction, and the feeding speed is v f The feeding distance is s f The method comprises the steps of carrying out a first treatment on the surface of the When the machined tooth surface is a helical tooth, the cutter must rotate an additional angle along with the feed because the feed direction is not consistent with the helical line direction of the tooth surface; when the cutter is at the initial position, the contact point between the cutter and the gear is P 1 When the cutter is at the end position of feeding, the contact point between the cutter and the gear is P 2 The method comprises the steps of carrying out a first treatment on the surface of the From which P can be analyzed 1 And P 1 The phase difference displacement is s a The following relationship is satisfied:
whereby the toolThe rotation angle of (2) is as follows:
further additional rotational speeds are obtained: omega c '＝v f tanβ c /r c
The rotation speed of the final cutter is
K in f And i cg Respectively defining an additional rolling ratio and a transmission rolling ratio in the processing process; simultaneously, the corner of cutter is: />
The face gear scraping processing method has the following beneficial effects:
1. the processing method inherits the technical advantages of tooth scraping of the cylindrical gear, and has higher production efficiency and processing precision;
2. the method of the invention uses the principle of space worm drive to realize the enveloping of the tooth surface, and realizes the material removal by adjusting the offset of the cutter and the workpiece in the processing process;
3. the processing cutter adopted by the processing method is a universal tooth scraping cutter or a tooth shaping cutter, and no special customization is needed;
4. the processing machine tool can be a universal spiral bevel gear face hobbing machine tool; the design of the fixture is consistent with that of the spiral bevel gear with the rolling cutting, and no special customization is needed.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a face worm drive principle employed in the present invention;
FIG. 2 is a schematic view of the basic principle of the tooth scraping process of the present invention;
fig. 3 is a schematic diagram of a feeding mode adopted by the invention.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
The material removing mechanism of the face gear scraping processing method is consistent with that of the cylindrical gear scraping process, and the material removing mechanism is based on the relative sliding of the transmission tooth faces of the staggered shafts, but is quite different from that of the cylindrical gear scraping in processing principle. The cylindrical gear turning process is based on spatial staggered shaft helical gear transmission, namely, a cutter and a workpiece form a spatial helical gear pair. The method is that the space staggered shaft surface worm is transmitted, namely, a space cylindrical surface worm pair is formed by a cutter and a workpiece, as shown in figure 1, the tooth scraping processing of the face gear is realized by replacing a small cylindrical gear with a cutting cutter, and the basic principle is shown in figure 2.
Because the cylindrical gear and the face gear are engaged by the space staggered shaft, the workpiece and the cutter can slide relatively at the contact point, the cutting speed condition is realized, the material removal requirement is met, and the relative movement speed is determined by the outer diameter of the face gear and the offset distance of the workpiece and the cutter.
In order to properly perform face scraping, the parameters of the face gear and the cutter must satisfy the following relationship:
wherein Σ is the angle of processing, β g Is the helix angle of the gear, beta c R is the helix angle of the cutter c Is the reference circle radius of the cutter, r g Is the pitch circle radius of the gear, z g For the number of teeth, z g For the number of teeth of the cutter, m nc Is the normal surface modulus of the cutter, m ng Is the gear normal surface modulus.
Since the tooth trace of the offset rear gear is no longer along the axial direction of the cutter, additional feed motion is required to ensure that the tooth space can be completely machined by the tooth scraper without interference, and the additional motion principle of the cutter is shown in fig. 3. As can be seen from the figure, the tool feed is in the horizontal direction, the feed speed is v f The feeding distance is s f . When the machined tooth surface is a helical tooth, the tool must be rotated by an additional angle with the feed due to the fact that the feed direction is not coincident with the helical direction of the tooth surface. FIG. 3 (a) shows the starting position of the cutter, the contact point between the cutter and the gear is P 1 FIG. 3 (b) shows the end position of the tool feed, where the contact point between the tool and the gear is P 2 . From which P can be analyzed 1 And P 1 The phase difference displacement is s a Satisfy the following relation
So that the rotation angle of the cutter is as follows:
additional rotational speeds are further available: omega c '＝v f tanβ c /r c
The rotation speed of the final cutter is
K in f And i cg Respectively defined as the additional roll ratio and the gear roll ratio during processing. Simultaneously, the corner of cutter is: />
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (1)
1. A face gear scraping processing method is characterized in that a face gear is processed by adopting a method of cutting a workpiece by a cutter, the cutter and the workpiece are in space staggered shaft face worm transmission, namely, the cutter and the workpiece form a space cylindrical face worm pair, so that the face gear scraping processing is realized;
the parameters of the face gear and the cutter satisfy the following relation:
in the method, in the process of the invention,
for the processed included angle, ">
Is the helix angle of the gear, the%>
Is the helix angle of the cutter, is>
For the pitch circle radius of the tool, < >>
For the pitch circle radius of the gear, < >>
For the number of teeth of the gear>
For the number of teeth of the cutter>
For the normal surface modulus of the tool, < >>
The gear normal surface modulus;
the feeding speed of the cutter is along the horizontal direction
The feeding distance is set to->
The method comprises the steps of carrying out a first treatment on the surface of the When the machined tooth surface is a helical tooth, the cutter must rotate an additional angle along with the feed because the feed direction is not consistent with the helical line direction of the tooth surface; when the cutter is at the initial position, the contact point of the cutter and the gear is +.>
When the cutter is at the end position of feeding, the contact point of the cutter and the gear is +.>
The method comprises the steps of carrying out a first treatment on the surface of the From which +.>
And->
The phase difference displacement is +.>
The following relationship is satisfied:
so that the rotation angle of the cutter is as follows:
；
further additional rotational speeds are obtained:
the rotation speed of the final cutter is
In the formula->
And->
Respectively defining an additional rolling ratio and a transmission rolling ratio in the processing process; simultaneously, the corner of cutter is: />
。/>
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011515534.XA CN112719467B (en) | 2020-12-21 | 2020-12-21 | Face gear scraping processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011515534.XA CN112719467B (en) | 2020-12-21 | 2020-12-21 | Face gear scraping processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112719467A CN112719467A (en) | 2021-04-30 |
| CN112719467B true CN112719467B (en) | 2023-05-23 |
Family
ID=75603649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011515534.XA Active CN112719467B (en) | 2020-12-21 | 2020-12-21 | Face gear scraping processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112719467B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1339765A (en) * | 1970-02-16 | 1973-12-05 | Bird Island Inc | Gear making |
| CN101780569A (en) * | 2009-11-12 | 2010-07-21 | 天津市达鑫精密机械设备有限公司 | Processing method for manufacturing teeth of cylindrical gears by turning |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6602115B2 (en) * | 2001-01-03 | 2003-08-05 | The Boeing Company | Tool and method for precision grinding of a conical face gear that meshes with a conical involute pinion |
| WO2012159942A1 (en) * | 2011-05-26 | 2012-11-29 | Klingelnberg Ag | Method for hob peeling external teeth and device having a corresponding hob peeling tool |
| US9221113B2 (en) * | 2013-03-15 | 2015-12-29 | Gm Global Technology Operations, Llc | Methods for generating gear teeth of a double involute pinion-face gear drive system |
| DE102013110130B4 (en) * | 2013-09-13 | 2015-10-01 | Präwema Antriebstechnik GmbH | Tool, method and machine for generating a tooth profile on a workpiece by skiving |
| CN105397203A (en) * | 2015-12-14 | 2016-03-16 | 南京工业大学 | Helical tooth scraping cutter for numerical control powerful tooth scraping machining |
| CN105436623B (en) * | 2016-01-08 | 2017-07-18 | 南京工大数控科技有限公司 | Method for processing hard tooth surface of medium-precision large-modulus cylindrical gear |
| EP3500383B1 (en) * | 2016-08-22 | 2020-03-11 | The Gleason Works | Power skiving pressure angle correction without tool geometry change |
| CN108620689A (en) * | 2017-12-29 | 2018-10-09 | 南京工业大学 | Numerical control powerful scraping tooth parametric programming machining method |
| CN109352092B (en) * | 2018-12-12 | 2019-12-20 | 重庆克利加工具制造有限公司 | Design method of powerful gear cutter |
| CN110587038B (en) * | 2019-09-17 | 2021-05-18 | 南京工业大学 | Tooth profile error compensation method for gear scraping machining |
-
2020
- 2020-12-21 CN CN202011515534.XA patent/CN112719467B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1339765A (en) * | 1970-02-16 | 1973-12-05 | Bird Island Inc | Gear making |
| CN101780569A (en) * | 2009-11-12 | 2010-07-21 | 天津市达鑫精密机械设备有限公司 | Processing method for manufacturing teeth of cylindrical gears by turning |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112719467A (en) | 2021-04-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101976847B1 (en) | Semi-completing skiving method and device having corresponding skiving tool for executing a semi-completing skiving method | |
| JP6721223B2 (en) | Spherical involute tooth profile spiral bevel gear cutting method | |
| CN107530803B (en) | Tooth finishing tooth making method and combined cutter thereof | |
| CN101733486B (en) | Method for machining cylindrical gear cutting teeth | |
| US20150202705A1 (en) | Machine for machining gear teeth and gear teeth machining method | |
| CN105171141A (en) | Method and device for the face-side chamfering of gear teeth of a workpiece | |
| CN104819266A (en) | Arc spiral line mixed herringbone gear without tool withdrawal groove and processing method thereof | |
| KR20190091951A (en) | Manufacturing apparatus of enveloping worm, manufacturing method thereof and enveloping worm thereby | |
| CN204353589U (en) | Internal tooth gear-hobbing machine | |
| CN112719467B (en) | Face gear scraping processing method | |
| CN101782130B (en) | Nonorthogonal helical conical worm gear pair and nonorthogonal helical conical worm gear limited slip differential | |
| WO2010038235A1 (en) | Stress concentration free spline profile | |
| CN113175498A (en) | Combined worm and gear transmission mechanism and machining method thereof | |
| CN112935415A (en) | Hobbing and hobbing method for variable-tooth-thickness involute helical gear and hobbing cutter design method | |
| CN111097973A (en) | Method for half-expanding and processing herringbone gear by using finger-shaped cutter | |
| CN101745669A (en) | Precision low-modulus worm processing method | |
| CN108406005B (en) | Numerical control machining method for wire gear and special horizontal milling machine thereof | |
| JPS60131115A (en) | Machine for manufacturing or machining gear | |
| JPH0243619Y2 (en) | ||
| CN113600932B (en) | Method for processing cylindrical helical gear by hobbing on bevel gear milling machine | |
| CN104898571A (en) | Archimedes spiral interpolation mechanism | |
| CN105798396B (en) | A kind of new cylinder inner gear ' method for turning | |
| JP2010284796A (en) | Rotary dresser | |
| CN112872499B (en) | Tooth surface shaping method for face-tooth wheel gear | |
| CN110280983B (en) | Method for machining face-tooth wheel vehicle teeth |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |