CN101439413B - High-speed machining method for spherical surface of differential mechanism casing - Google Patents
High-speed machining method for spherical surface of differential mechanism casing Download PDFInfo
- Publication number
- CN101439413B CN101439413B CN200810233394XA CN200810233394A CN101439413B CN 101439413 B CN101439413 B CN 101439413B CN 200810233394X A CN200810233394X A CN 200810233394XA CN 200810233394 A CN200810233394 A CN 200810233394A CN 101439413 B CN101439413 B CN 101439413B
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- special
- knife bar
- supporting base
- spherical surface
- broach shell
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Abstract
A high-speed cutting method of spherical surface of a differential cage comprises that one end of special jaws with tooth-shaped structures for three cuboids are meshed with three tooth-shaped structures which are evenly distributed on an existing hydraulic chuck and are fixed on the hydraulic chuck by connecting bolts; the inner side of the other end of the special chucks is provided with a contour axial positioning platform; the inner side of the end part of the platform is provided with a boss; the boss is a concave cambered surface; the cambered surfaces of the three special jaw bosses are positioned on the same circumference; the circle centre is on the shaft axis of the main shaft; the three special jaws are used for clamping the external circle of the differential cage; a special lengthened knife pouch is arranged on a knife holder bearing base; and a knife body locking bolt arranged along the axial direction of the stretched part of the special lengthened knife pouch is used for locking knife tool. The invention solves the problem in traditional processing method of the spherical surface of the differential cage that work piece and the knife tool are easy to vibrate; therefore, the method improves process precision and production efficiency of the spherical surface of the differential cage, ensures stability and durability of operation of a differential mechanism, and reduces noise in operation.
Description
Technical field
The invention belongs to the metal cutting technology field, concretely, relate to the differential carrier Internal Spherical Surface high-speed machining method that a kind of heavy truck is used.
Background technology
Differential carrier blank on the heavy truck is by the steel alloy forging and molding, is made up of big end and small end, and big end is like the hemisphere housing, and small end is a cylindrical tube, and small end is positioned under the big bottom.Blank is cut processing through the laggard driving of modified heat treatment.
Tradition spherical surface of differential mechanism casing processing method all is to clamp differential carrier end diameter cylindrical, turning differential carrier Internal Spherical Surface.The shortcoming of this traditional processing method is that work in-process differential carrier and cutter rigidity are bad, clamping differential carrier end diameter cylindrical processes, easily produce vibration, cause the product size low precision, rough surface, the form and position tolerance precision is low, directly has influence on the size of stationarity, durability and the running noises of differential mechanism in transmission process.
Summary of the invention
For solving the problems of the technologies described above, the object of the present invention is to provide the high-speed machining method for spherical surface of differential mechanism casing behind a kind of forging and molding.
Technical scheme of the present invention is as follows:
The first step, making anchor clamps, three special jaws are installed on existing oild chuck, described special jaw likeness in form cuboid, the end that three special jaws are had a tooth-shape structure respectively with oild chuck on equally distributed three tooth-shape structures engagement, and be fixed on the oild chuck by connecting bolt.There is a contour axial location platform other end inboard of this special jaw, the length of this contour axial location platform is less than the total length of described special jaw, the other end inboard of described special jaw is provided with boss, this boss is inner concave arc surface, the boss cambered surface of described three special jaws is on same circumference, and the center of circle is on the axial line of main shaft.
The oild chuck that the present invention adopts belongs to prior art, and oild chuck is by being evenly distributed in three tooth-shape structures as you know, and this tooth-shape structure can drive tooth-shape structure and move along center of circle direction under hydraulic control, thereby clamps or unclamp workpiece.The present invention drives three special jaws by the oild chuck tooth-shape structure just and moves to center of circle direction, thereby reaches the purpose that clamps differential carrier.
Second step, making cutter, this cutter comprises circular cutter holder, knife bar supporting base, this knife bar supporting base is fixed on the circular cutter holder by the supporting base fastening bolt, described knife bar supporting base is provided with the special-purpose lengthening broach shell, this special-purpose lengthening broach shell one end is on the knife bar supporting base, the other end stretches out outside the described knife bar supporting base, and the length that this special-purpose lengthening broach shell stretches out the outer part of described knife bar supporting base is 1/2～2/3 of special-purpose lengthening broach shell total length; Radially be provided with the cutter hub clamping screw on the part outside the described knife bar supporting base of stretching out of described special-purpose lengthening broach shell.
The present invention is provided with the special-purpose lengthening broach shell, and this structure can be eliminated the vibration that causes because of knife bar is long when machining, improves the stationarity and the durability of differential mechanism transmission.
The 3rd step, differential carrier is placed in the middle of three special jaws, the smaller diameter end of differential carrier is towards oild chuck, with contour locating platform axial location, start oild chuck, three special jaws and the tooth-shape structure that is meshing are moved to spindle axis line direction along radial direction simultaneously, thus the larger diameter end cylindrical of chucking differential carrier.
The present invention change clamp processing card differential carrier originally smaller diameter end for clamping larger diameter end, workpiece firmly is clamped in the special jaw, eliminate vibration, improved the workpiece rigidity in processing.
The 4th goes on foot, knife bar is inserted in the special-purpose lengthening broach shell, and rotation cutter hub clamping screw locks knife bar.
The 5th step, the Internal Spherical Surface that knife bar is stretched into described differential carrier are processed.
Described special-purpose lengthening broach shell is provided with cooling fluid injection channel and cooling fluid hand-hole, this cooling fluid injection channel one end is communicated with the cooling fluid hand-hole, other end aperture is positioned at the outer face of the outer part of the described knife bar supporting base of stretching out of described special-purpose lengthening broach shell, add man-hour, cooling fluid is ejected into by the cooling fluid injection channel in cooling fluid hand-hole and the special-purpose lengthening broach shell carries out cooling and lubricating on point of a knife and the machined surface.Play the cooling and lubricating effect to workpiece machining surface.
Described differential carrier Internal Spherical Surface adds rough turn processing of work point and finish turning processing; Wherein
(1). rough turn processing
Speed of mainshaft 450n/s
Feed 0.6mm
Depth of cut 1mm-1.5mm
Coolant rate 4m
3/ h
(2). finish turning processing
Speed of mainshaft 650n/s
Feed 0.1mm
Depth of cut 0.5mm
Coolant rate 4m
3/ h.
The invention has the beneficial effects as follows: clamping is firm, and cutting is stable, has overcome the vibration problem in the machining in the prior art, the machining accuracy and the production efficiency of spherical surface of differential mechanism casing have been improved, guaranteed the stationarity of differential mechanism transmission, durability has reduced operating noise.
Description of drawings
Fig. 1 is a differential carrier processing cutaway view;
Fig. 2 is that the A of Fig. 1 is to view.
The meaning of each Reference numeral in the above-mentioned accompanying drawing:
1 differential carrier, 2 connecting screw rods, 3 special jaws, 4 oild chucks, 5 knife bars, 6 knife bar supporting bases, 7 circular cutter holders, 8 cooling fluid injection channels, 9 cooling fluid hand-holes, 10 tooth-shape structures, 11 cutter hub clamping screws, 12 supporting base fastening bolts, 13 special-purpose lengthening broach shells.
The specific embodiment
Below in conjunction with accompanying drawing concrete grammar of the present invention is further described:
As shown in Figure 1 and Figure 2, described special jaw 3 is a cuboid, one end has the tooth-shape structure (see figure 1), be evenly distributed with three tooth-shape structure 10 (see figure 2)s on the oild chuck 4, the end that three special jaws 3 are had a tooth-shape structure respectively with oild chuck 4 on tooth-shape structure 10 engagements, and be connected on the oild chuck 4 by connecting bolt 2; There is an axial contoured platform 3b other end inboard of special jaw 3, in order to the axial location differential carrier, the length of described contour axial location platform 3b is less than the total length of described special jaw 3, other end inboard at special jaw 3 is provided with boss 3a, this boss 3a is inner concave arc surface, the boss 3a cambered surface of described three special jaws 3 is on same circumference, and the center of circle is on the axial line of main shaft; Boss 3a cambered surface is set is convenient to three special jaws 3 and contacts, increase contact-making surface, differential carrier is firmly clamped with the differential carrier face.
Can also see from Fig. 1: described cutter comprises circular cutter holder 7, knife bar supporting base 6, this knife bar supporting base 6 is fixed on the circular cutter holder 7 by supporting base fastening bolt 12, described knife bar supporting base 6 is provided with special-purpose lengthening broach shell 13, these special-purpose lengthening broach shell 13 1 ends are on knife bar supporting base 6, the other end stretches out outside the described knife bar supporting base 6, and the length that this special-purpose lengthening broach shell 13 stretches out the outer part of described knife bar supporting base is 1/2～2/3 of special-purpose lengthening broach shell 13 total lengths; Radially be provided with cutter hub clamping screw 11 on the part outside the described knife bar supporting base of stretching out of described special-purpose lengthening broach shell 13.
It is middle that differential carrier 1 is placed on three special jaws 3, the small end that makes differential carrier is towards oild chuck 4, start oild chuck 4, three special jaws 3 and the tooth-shape structure that is meshing are moved along the direction of axis line of radial direction to main shaft simultaneously, the cancave cambered surface of boss 3a contacts with the differential carrier cylindrical, thus the chucking differential carrier.
Earlier knife bar 5 is inserted in the special-purpose lengthening broach shell 13, rotation cutter hub clamping screw 11 then, stretches into knife bar 5 lockings to knife bar 5 Internal Spherical Surface of carrying out of described differential carrier 1 and processes.
As shown in Figure 1, described special-purpose lengthening broach shell 13 is provided with cooling fluid injection channel 8 and cooling fluid hand-hole 9, these cooling fluid injection channel 8 one ends are communicated with cooling fluid hand-hole 9, other end aperture is positioned at the outer face of the extension of described special-purpose lengthening broach shell 13, add man-hour, cooling fluid is ejected into by the cooling fluid injection channel 8 in cooling fluid hand-hole 9 and the special-purpose lengthening broach shell 13 carries out cooling and lubricating on point of a knife and the machined surface.Play the cooling and lubricating effect for the differential carrier finished surface.
Described differential carrier Internal Spherical Surface adds rough turn processing of work point and finish turning processing; Wherein
(1). rough turn processing
Speed of mainshaft 450n/s
Feed 0.6mm
Depth of cut 1mm-1.5mm
Coolant rate 4m
3/ h
(2). finish turning processing
Speed of mainshaft 650n/s
Feed 0.1mm
Depth of cut 0.5mm
Coolant rate 4m
3/ h.
The present invention firmly is clamped in the special jaw workpiece by special jaw holding workpiece differential carrier cylindrical, has improved the cutter in the processing and the rigidity of workpiece.Thereby the dimensional accuracy of spherical surface of differential mechanism casing and processed surface smoothness all are improved.
The experiment proved that, adopt the inventive method processing differential carrier Internal Spherical Surface, its product size precision by original+/-0.05mm brought up to+/-0.02mm, the position degree has been brought up to 0.02mm by original 0.05mm, roughness has dropped to 0.8um-1.6um by original 3.2um, working (machining) efficiency has improved 10%-30%, and cost has descended 15%.
Claims (3)
1. a high-speed machining method for spherical surface of differential mechanism casing is characterized in that, comprises the steps:
The first step, make anchor clamps, go up installation three special jaws (3) at existing oild chuck (4), described special jaw (3) likeness in form cuboid, an end that three special jaws (3) is had tooth-shape structure is gone up equally distributed three tooth-shape structures (10) engagement with oild chuck (4) respectively, and be fixed on the oild chuck (4) by connecting bolt (2), there is a contour axial location platform (3b) other end inboard of this special jaw (3), the length of this contour axial location platform (3b) is less than the total length of described special jaw (3), the other end inboard of described special jaw (3) is provided with boss (3a), this boss (3a) is inner concave arc surface, boss (3a) cambered surface of described three special jaws (3) is on same circumference, and the center of circle is on the axial line of main shaft;
Second step, making cutter, this cutter comprises circular cutter holder (7), knife bar supporting base (6), this knife bar supporting base (6) is fixed on the circular cutter holder (7) by supporting base fastening bolt (12), described knife bar supporting base (6) is provided with special-purpose lengthening broach shell (13), these special-purpose lengthening broach shell (13) one ends are on knife bar supporting base (6), the other end stretches out outside the described knife bar supporting base (6), and the length that this special-purpose lengthening broach shell (13) stretches out the outer part of described knife bar supporting base is 1/2～2/3 of special-purpose lengthening broach shell (13) total length; Radially be provided with cutter hub clamping screw (11) on the part outside the described knife bar supporting base of stretching out of described special-purpose lengthening broach shell (13);
The 3rd step, differential carrier (1) is placed in the middle of three special jaws (3), the smaller diameter end of differential carrier (1) is towards oild chuck (4), be positioned on the contour axial location platform, start oild chuck (4), three special jaws (3) and the tooth-shape structure that is meshing are moved to spindle axis line direction along radial direction simultaneously, thus the larger diameter end cylindrical of chucking differential carrier;
The 4th goes on foot, knife bar (5) is inserted in the special-purpose lengthening broach shell (13), and rotation cutter hub clamping screw (11) locks knife bar (5);
The 5th step, knife bar (5) is stretched into described differential carrier (1) carry out Internal Spherical Surface processing.
2. high-speed machining method for spherical surface of differential mechanism casing according to claim 1, it is characterized in that: described special-purpose lengthening broach shell (13) is provided with cooling fluid injection channel (8) and cooling fluid hand-hole (9), these cooling fluid injection channel (8) one ends are communicated with cooling fluid hand-hole (9), other end aperture is positioned at the outer face of the outer part of the described knife bar supporting base of stretching out of described special-purpose lengthening broach shell (13), add man-hour, cooling fluid is ejected into by the cooling fluid injection channel (8) in cooling fluid hand-hole (9) and the special-purpose lengthening broach shell (13) carries out cooling and lubricating on point of a knife and the machined surface.
3. high-speed machining method for spherical surface of differential mechanism casing according to claim 1 is characterized in that: described differential carrier (1) Internal Spherical Surface adds rough turn processing of work point and finish turning processing; Wherein
(1). rough turn processing
Speed of mainshaft 450n/s
Feed 0.6mm
Depth of cut 1mm-1.5mm
Coolant rate 4m
3/ h
(2). finish turning processing
Speed of mainshaft 650n/s
Feed 0.1mm
Depth of cut 0.5mm
Coolant rate 4m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810233394XA CN101439413B (en) | 2008-12-18 | 2008-12-18 | High-speed machining method for spherical surface of differential mechanism casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810233394XA CN101439413B (en) | 2008-12-18 | 2008-12-18 | High-speed machining method for spherical surface of differential mechanism casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101439413A CN101439413A (en) | 2009-05-27 |
| CN101439413B true CN101439413B (en) | 2010-09-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810233394XA Expired - Fee Related CN101439413B (en) | 2008-12-18 | 2008-12-18 | High-speed machining method for spherical surface of differential mechanism casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101439413B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5557587B2 (en) * | 2010-04-28 | 2014-07-23 | 富士機械製造株式会社 | Internal processing equipment for hollow workpieces |
| CN102615293B (en) * | 2012-04-25 | 2013-11-27 | 江西江铃底盘股份有限公司 | Method for machining spherical surface of inner cavity of integral differential case of automobile |
| CN104275495B (en) * | 2014-09-05 | 2017-05-10 | 青岛华瑞汽车零部件股份有限公司 | Machining system and machining method of automobile differential shell |
| CN105215385A (en) * | 2015-10-29 | 2016-01-06 | 新乡日升数控轴承装备股份有限公司 | A kind of rocking knife carrier device |
| CN109079576B (en) * | 2018-09-29 | 2021-01-08 | 北京航空航天大学 | Separation ultrahigh-speed cutting high-pressure cooling and lubricating method |
| CN114905323B (en) * | 2022-05-09 | 2024-02-20 | 浙江童氏汽车部件股份有限公司 | Automatic processing spherical shell's equipment |
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2008
- 2008-12-18 CN CN200810233394XA patent/CN101439413B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101439413A (en) | 2009-05-27 |
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Granted publication date: 20100908 Termination date: 20191218 |