CN115302199A - Closed main speed reducer shell machining method - Google Patents
Closed main speed reducer shell machining method Download PDFInfo
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- CN115302199A CN115302199A CN202210942106.8A CN202210942106A CN115302199A CN 115302199 A CN115302199 A CN 115302199A CN 202210942106 A CN202210942106 A CN 202210942106A CN 115302199 A CN115302199 A CN 115302199A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- 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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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Abstract
The invention particularly relates to a processing method of a closed main speed reducer shell. The method comprises the steps of clamping a main reducer shell, roughly boring and processing an inner bearing hole system and an outer bearing hole system of a main gear, finely boring and processing the inner bearing hole system and the outer bearing hole system of the main gear and processing a rear cover flange surface. The main reducer shell is clamped: and (5) clamping the main reducer shell by using a special tool clamp at one time. The rough boring processing of the bearing hole systems inside and outside the main gear comprises the following steps: and (3) carrying out forward boring and rough machining on the outer bearing hole system and carrying out backward boring and rough machining on the inner bearing hole system. Finely boring and processing the inner and outer bearing hole systems of the main gear: and forward boring to finish the outer bearing hole system, and backward boring to finish the inner bearing hole system. And processing a flange surface of the rear cover: drilling connecting bolt holes and pin holes, and carrying out rough boring processing and then fine boring processing on differential mechanism bearing holes; and (4) positioning and processing the excircle, the supporting hole and the oil injection and drainage hole of the dust cover by using two pins on one surface of the flange surface. And the special tool clamp is adopted to realize the accurate clamping of the shell to be processed, and different processing cutters are selected according to different processing steps by adjusting the processing mode.
Description
Technical Field
The invention relates to the field of automobile part processing, in particular to a method for processing a closed main speed reducer shell.
Background
For the brand-new main reducer assembly of high-end passenger car development of matching, because four driving vehicle type cabin arrangement structure, transaxle main reducer part adopts the special construction who runs through the engine oil pan, and reduction gear housing is die casting aluminum alloy material, and for novel controlling the semi-enclosed structure of branch shell, the structure is complicated relatively. Meanwhile, the high performance requirement of the passenger vehicle has extremely high quality requirement on the speed reducer assembly, the speed reducer shell is a cabin of the main speed reducer, is a key part of a mechanism for connecting a vehicle body suspension, a transmission shaft, a wheel-side driving half shaft and the like, provides support and protection for the main speed reducer, bears loads transmitted by the transmission shaft, a vehicle frame and a road, and has important influence on the bearing capacity, reliability, service life, noise and safety of the speed reducer assembly. The most critical main bearing pre-tightening, tooth meshing clearance and contact area adjustment in the assembly of the speed reducer assembly is mainly based on the actual machining size of the shell of the speed reducer; therefore, the machining precision of the shell of the speed reducer directly influences the assembly quality of the assembly.
As shown in fig. 5 and 6, when the closed main reducer casing is machined, it is difficult to ensure the machining precision in the conventional process, and a clamping tool capable of accurately positioning the closed main reducer casing, a machining method capable of ensuring the machining precision, and a tool are required during machining.
Disclosure of Invention
In order to solve the problems, the invention provides a method for machining a closed main speed reducer shell, which adopts a special tool clamp to accurately clamp the shell to be machined, and adjusts the machining mode to select different machining tools according to different machining steps.
The invention provides a processing method of a closed main reducer shell, which comprises the steps of clamping the main reducer shell, roughly boring and processing an inner bearing hole system and an outer bearing hole system of main teeth, finely boring and processing the inner bearing hole system and the outer bearing hole system of the main teeth and processing a flange surface of a rear cover;
the main reducer shell is clamped: clamping the main reducer shell by using a special tool clamp at one time;
the rough boring processing of the bearing hole systems inside and outside the main gear comprises the following steps: forward boring and roughly machining an outer bearing hole system, and backward boring and roughly machining an inner bearing hole system;
and finely boring the inner and outer bearing hole systems of the main gear: forward boring to finish the outer bearing hole series, and backward boring to finish the inner bearing hole series;
and processing the flange surface of the rear cover: drilling connecting bolt holes and pin holes, and carrying out rough boring processing and then fine boring processing on differential mechanism bearing holes; and machining the excircle, the supporting hole and the oil injection and drainage hole of the dust cover.
Further, the special tool clamp comprises a fixed bottom plate 1 slide rail 2, a floating support base 3, a floating support upper cover 4, a V-shaped floating support tailstock 5, an L-shaped vertical seat 6, two positioning and pressing mechanisms 7, two integrated pressing mechanisms 8 and a locking mechanism 9; the utility model discloses a floating support device, including slide rail 2, floating support pedestal 3, floating support pedestal 4, V type floating support pedestal 5, two integral type hold-down mechanism 8, V type floating support pedestal 4, V type floating support pedestal 5, floating support pedestal 4, and one of them integral type hold-down mechanism 7 is installed in the upper left of L type vertical seat 6, and another integral type hold-down mechanism 7 is installed in the upper right of L type vertical seat 6, locking mechanism 9 is fixed on bottom plate 1, with floating support upper cover 4 swing joint.
Further, floating support base 3, floating support upper cover 4 and V type floating support tailstock 5 constitute integrative mechanism, realize moving on slide rail 2 in step, locking mechanism 9 realizes the locking to floating support base 3 and V type floating support tailstock 5 simultaneously through the position of locking floating support upper cover 4.
Further, the V-shaped floating support tailstock 5 comprises a V-shaped block 5-1 and a nut 5-2; the height of the V-shaped block 5-1 is adjustable, and the nut 5-2 is used for fixing the V-shaped block 5-1 after the height is adjusted.
Further, when the special tool clamp is used for clamping, a pin hole of a flange face of the reducer shell is fixed by a positioning and pressing mechanism 7 on an L-shaped vertical seat 6, the front-back distance of a V-shaped floating support tailstock 5 is adjusted, the position of the V-shaped floating support tailstock 5 is fixed by a locking mechanism 9, a V-shaped block 5-1 is located below the closed main reducer shell, the height of the V-shaped block 5-1 is adjusted to support the closed main reducer shell, the V-shaped block is fixed by nuts 5-2 at two ends, pressing plates of a left integrated pressing mechanism 8 and a right integrated pressing mechanism 8 are adjusted, two lifting lug planes of the closed main reducer shell are pressed, and the positioning and clamping of the closed main reducer shell are completed.
Further, the bore of the positive boring rough machining outer bearing is as follows: and (3) machining phi 73, phi 58 and phi 54 holes and 20-degree, 45-degree and 30-degree hole chamfers at one time by using an integral cutter.
Further, the reverse boring rough machining inner bearing hole system is as follows: and (3) using a heavy alloy metal cutter with variable cross section and variable radius to reversely bore and roughly machine the phi 96 main gear inner bearing hole system through the middle small hole phi 54.
Further, the positive boring finish machining outer bearing hole system is as follows: and (3) finely boring phi 74H7, phi 72N6 and phi 58 +/-0.05 by using a standard cutter.
Further, the reverse boring finish machining inner bearing bore system is as follows: and (3) a heavy alloy metal cutter with variable cross section and variable radius is used for reversely boring and finishing the bearing hole system in the phi 96 main gear through the middle small hole phi 54.
Further, the flange surface of the processed rear cover is specifically as follows: drilling an M8 connecting bolt hole at 10 positions and two phi 10H7 pin holes, and performing rough boring processing and then fine boring processing on a differential bearing hole phi 83P7 and a phi 62H7; and (3) positioning and processing the outer circle phi 96g6 of the dust cover, the supporting hole and the oil injection and drainage hole by using two pins on one surface of the flange surface.
The invention has the beneficial effects that: and the special tool clamp is adopted to realize the accurate clamping of the shell to be processed, and different processing cutters are selected according to different processing steps by adjusting the processing mode. When in machining, a clamping tool capable of accurately positioning the position of the closed main speed reducer shell and capable of ensuring machining precision are needed.
Drawings
FIG. 1 is an overall schematic view of a clamping tool;
FIG. 2 is a schematic structural view of a clamping tool;
FIG. 3 is a schematic view of an integral cutting tool;
FIG. 4 is a schematic view of a variable cross-section + variable radius heavy alloy metal blade;
FIG. 5 is a schematic view of a closed final drive housing construction;
FIG. 6 is a cross-sectional view of a closed final drive housing.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a processing method of a closed main reducer shell, which comprises the steps of clamping the main reducer shell, roughly boring and processing inner and outer bearing hole systems of main teeth, finely boring and processing the inner and outer bearing hole systems of the main teeth and processing a flange surface of a rear cover.
The special tool clamp which is designed automatically is adopted for clamping the main reducer shell, and comprises a fixed bottom plate 1, a slide rail 2, a floating support base 3, a floating support upper cover 4, a V-shaped floating support tailstock 5, an L-shaped vertical seat 6, two positioning and pressing mechanisms 7, two integrated pressing mechanisms 8 and a locking mechanism 9, wherein the fixed bottom plate is provided with the floating support base 3, and the L-shaped vertical seat is provided with the V-shaped floating support tailstock 5.
The utility model discloses a floating support device, including slide rail 2, floating support pedestal 3, floating support pedestal 4, V type floating support pedestal 5, two integral type hold-down mechanism 8, V type floating support pedestal 4, V type floating support pedestal 5, floating support pedestal 4, and one of them integral type hold-down mechanism 7 is installed in the upper left of L type vertical seat 6, and another integral type hold-down mechanism 7 is installed in the upper right of L type vertical seat 6, locking mechanism 9 is fixed on bottom plate 1, with floating support upper cover 4 swing joint.
The floating support base 3, the floating support upper cover 4 and the V-shaped floating support tailstock 5 form an integrated mechanism, synchronous movement on the slide rail 2 is achieved, and the locking mechanism 9 locks the floating support base 3 and the V-shaped floating support tailstock 5 through the position of the locking floating support upper cover 4.
The V-shaped floating supporting tailstock 5 comprises a V-shaped block 5-1 and a nut 5-2; the height of the V-shaped block 5-1 is adjustable, and the nut 5-2 is used for fixing the V-shaped block 5-1 after the height is adjusted.
When the special tool clamp is used for clamping, a pin hole of a flange face of a speed reducer shell is fixed by a positioning and pressing mechanism 7 on an L-shaped vertical seat 6, the front-back distance of a V-shaped floating support tailstock 5 is adjusted, the position of the V-shaped floating support tailstock 5 is fixed by a locking mechanism 9, a V-shaped block 5-1 is located below the closed main speed reducer shell, the height of the V-shaped block 5-1 is adjusted to support the closed main speed reducer shell and is fixed by nuts 5-2 at two ends, and pressing plates of a left integral pressing mechanism 8 and a right integral pressing mechanism 8 are adjusted and press two lifting lug planes of the closed main speed reducer shell to complete the positioning and clamping of the closed main speed reducer shell.
When the inner bearing hole system and the outer bearing hole system of the main gear are roughly bored, the phi 73 hole, the phi 58 hole, the phi 54 hole and the 20-degree, 45-degree and 30-degree hole chamfer angles are machined by using an integral cutter at one time in the forward boring rough machining outer bearing hole system, and the integral cutter is shown in FIG. 3; the reverse boring rough machining inner bearing hole system uses a heavy alloy metal cutter with variable cross section and variable radius to pass through the middle small hole phi 54, and then reverse boring rough machining phi 96 main tooth inner bearing hole system, wherein the heavy alloy metal cutter with variable cross section and variable radius is shown in figure 4.
When the inner bearing hole system and the outer bearing hole system of the main gear are subjected to fine boring, the finish-bored outer bearing hole system is subjected to fine boring by using a standard cutter to respectively carry out fine boring on phi 74H7, phi 72N6 and phi 58; the reverse boring finish machining of the inner bearing hole system uses a heavy alloy metal cutter with variable cross section and variable radius to pass through the middle small hole phi 54, and then reverse boring finish machining of the phi 96 main gear inner bearing hole system is performed.
Drilling 10M 8 connecting bolt holes and two phi 10H7 pin holes when the rear cover flange surface is machined, and performing rough boring machining and then fine boring machining on phi 83P7 and phi 62H7 of a differential mechanism bearing hole; and (3) positioning and processing the outer circle phi 96g6 of the dust cover, the support hole and the oil injection and drainage hole by using one surface of the flange surface and two pins.
Claims (10)
1. A processing method of a closed main reducer shell is characterized by comprising the steps of clamping the main reducer shell, roughly boring and processing an inner bearing hole system and an outer bearing hole system of main teeth, finely boring and processing the inner bearing hole system and the outer bearing hole system of the main teeth and processing a rear cover flange surface;
the main reducer shell is clamped: clamping the main reducer shell by using a special tool clamp at one time;
and roughly boring an inner bearing hole system and an outer bearing hole system of the main gear: forward boring and roughly machining an outer bearing hole system, and backward boring and roughly machining an inner bearing hole system;
and (3) finely boring the inner and outer bearing hole systems of the main gear: forward boring to finish the outer bearing hole series, and backward boring to finish the inner bearing hole series;
and processing the flange surface of the rear cover: drilling connecting bolt holes and pin holes, and carrying out rough boring processing and then fine boring processing on differential mechanism bearing holes; and positioning and processing the outer circle of the dust cover, the supporting hole and the oil injection and drainage hole.
2. The machining method of the closed main speed reducer shell according to claim 1, wherein the special tool clamp comprises a fixed bottom plate (1), a slide rail (2), a floating support base (3), a floating support upper cover (4), a V-shaped floating support tailstock (5), an L-shaped stand (6), two positioning and pressing mechanisms (7), two integrated pressing mechanisms (8) and a locking mechanism (9); slide rail (2) set up on PMKD (1), floating support base (3) is installed on slide rail (2), can remove on slide rail (2), floating support upper cover (4) is fixed on floating support base (3), V type floating support tailstock (5) and two integral type hold-down mechanism (8) are fixed on floating support upper cover (4), and one of them integral type hold-down mechanism (8) are located V type floating support tailstock (5) left side, and another integral type hold-down mechanism (8) are located V type floating support tailstock (5) right side, L type founds seat (6) and installs on PMKD (1) and is located floating support base (3) rear, one location hold-down mechanism (7) are installed in L type founds seat (6) upper left side, another location hold-down mechanism (7) are installed in L type founds seat (6) upper right side, locking mechanism (9) are fixed on PMKD (1), with floating support upper cover (4) swing joint.
3. The processing method of the closed type main reducer casing according to claim 2, characterized in that the floating support base (3), the floating support upper cover (4) and the V-shaped floating support tailstock (5) form an integrated mechanism, which realizes synchronous movement on the slide rail (2), and the locking mechanism (9) realizes the locking of the floating support base (3) and the V-shaped floating support tailstock (5) simultaneously by locking the position of the floating support upper cover (4).
4. The closed final drive housing machining method according to claim 3, characterized in that the V-shaped floating support tailstock (5) comprises a V-shaped block (5-1) and a nut (5-2); the height of the V-shaped block (5-1) is adjustable, and the nut (5-2) is used for fixing the V-shaped block (5-1) after the height is adjusted.
5. The machining method of the closed main speed reducer shell according to claim 4 is characterized in that when a special tool clamp is used for clamping, a positioning and pressing mechanism (7) on an L-shaped vertical seat (6) is used for fixing pin holes in a flange face of the main speed reducer shell, the front-back distance of a V-shaped floating support tailstock (5) is adjusted, a locking mechanism (9) is used for fixing the position of the V-shaped floating support tailstock (5), a V-shaped block (5-1) is located below the closed main speed reducer shell, the height of the V-shaped block (5-1) is adjusted to support the closed main speed reducer shell, the V-shaped block is fixed through nuts (5-2) at two ends, pressing plates of a left integrated pressing mechanism (8) and a right integrated pressing mechanism (8) are adjusted and press two lifting lug planes of the closed main speed reducer shell, and positioning and clamping of the closed main speed reducer shell are completed.
6. The method of claim 1, wherein the forward boring roughing outer bearing bore is: and (3) machining phi 73, phi 58 and phi 54 holes and 20-degree, 45-degree and 30-degree hole chamfers at one time by using an integral cutter.
7. The closed-type final drive shell machining method according to claim 1, characterized in that the reverse-boring roughing inner bearing bore is as follows: and (3) using a heavy alloy metal cutter with variable cross section and variable radius to reversely bore and roughly machine the phi 96 main gear inner bearing hole system through the middle small hole phi 54.
8. The closed final drive housing machining method according to claim 1, wherein the positive boring finish outer bearing bore is: and (3) finely boring phi 74H7, phi 72N6 and phi 58 by using a standard cutter.
9. The closed final drive housing machining method according to claim 1, characterized in that the reverse boring finish machining inner bearing bore system is: and (3) a heavy alloy metal cutter with variable cross section and variable radius is used for reversely boring and finishing the bearing hole system in the phi 96 main gear through the middle small hole phi 54.
10. The machining method of the closed main reducer casing according to claim 1, wherein the machining of the flange surface of the rear cover is specifically as follows: drilling an M8 connecting bolt hole at 10 positions and two phi 10H7 pin holes, and performing rough boring processing and then fine boring processing on a differential bearing hole phi 83P7 and a phi 62H7; and (3) positioning and processing the outer circle phi 96g6 of the dust cover, the support hole and the oil injection and drainage hole by using one surface of the flange surface and two pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942106.8A CN115302199A (en) | 2022-08-08 | 2022-08-08 | Closed main speed reducer shell machining method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210942106.8A CN115302199A (en) | 2022-08-08 | 2022-08-08 | Closed main speed reducer shell machining method |
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| CN115302199A true CN115302199A (en) | 2022-11-08 |
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| CN202210942106.8A Pending CN115302199A (en) | 2022-08-08 | 2022-08-08 | Closed main speed reducer shell machining method |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010039283A (en) * | 1999-10-29 | 2001-05-15 | 장병우 | Reduction gear casing for traction machine and production method thereof |
| CN103192231A (en) * | 2012-01-06 | 2013-07-10 | 鞠小平 | Processing method for main reducer housing assembly of heavy duty car |
| CN103934709A (en) * | 2014-04-03 | 2014-07-23 | 郑州精益达汽车零部件有限公司 | Fixture for rough boring of main cone bearing hole of main reducing gear of passenger car and machining of installation face of bearing pedestal |
| CN106181496A (en) * | 2016-09-13 | 2016-12-07 | 安徽工程大学机电学院 | Single reduction gear output shaft bearing hole right boring processing clamping device and processing method |
-
2022
- 2022-08-08 CN CN202210942106.8A patent/CN115302199A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010039283A (en) * | 1999-10-29 | 2001-05-15 | 장병우 | Reduction gear casing for traction machine and production method thereof |
| CN103192231A (en) * | 2012-01-06 | 2013-07-10 | 鞠小平 | Processing method for main reducer housing assembly of heavy duty car |
| CN103934709A (en) * | 2014-04-03 | 2014-07-23 | 郑州精益达汽车零部件有限公司 | Fixture for rough boring of main cone bearing hole of main reducing gear of passenger car and machining of installation face of bearing pedestal |
| CN106181496A (en) * | 2016-09-13 | 2016-12-07 | 安徽工程大学机电学院 | Single reduction gear output shaft bearing hole right boring processing clamping device and processing method |
Non-Patent Citations (2)
| Title |
|---|
| 李金华等: "高端乘用车减速器壳体加工方案", 汽车工艺师, no. 03, pages 24 - 26 * |
| 王海涛等: "乘用车减速器壳体加工方案", 汽车工艺师, no. 02, pages 66 - 68 * |
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