CN103244654A - High-power double-reduction-ratio marine gearbox body and processing method thereof - Google Patents
High-power double-reduction-ratio marine gearbox body and processing method thereof Download PDFInfo
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- CN103244654A CN103244654A CN2013100966332A CN201310096633A CN103244654A CN 103244654 A CN103244654 A CN 103244654A CN 2013100966332 A CN2013100966332 A CN 2013100966332A CN 201310096633 A CN201310096633 A CN 201310096633A CN 103244654 A CN103244654 A CN 103244654A
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Abstract
The invention relates to a marine gearbox body, in particular to a high-power double reduction ratio marine gearbox body and a processing method thereof. A middle box body which is fixed with a lower box body is arranged on the upper portion of the lower box body, an upper left box body which is fixed with the middle box body is arranged on the upper left portion of the middle box body, an upper right box body which is fixed with the middle box body is arranged on the upper right portion of the middle box body, box separating surfaces of the lower box body and the middle box body are arranged on a plane surface of the center of an output shaft hole, box separating surfaces of the middle box body and the upper right box body are arranged on a line between centers of a back-running drive shaft hole and an ahead-running slow-shift drive shaft hole, and box separating surfaces of the upper left box body and the upper right box body are arranged on a longitudinal vertical surface of the center of the back-running drive shaft hole. The high-power double reduction ratio marine gearbox body and the processing method thereof are convenient to process and high in improved processing accuracy and improved processing efficiency.
Description
Technical field
The present invention is a kind of marine gear box body, particularly a kind of high-power dualratio reduction marine gear box body and processing method.
Background technique
The high power gearbox that uses generally all adopts two cover clutches to be arranged in parallel at present, ahead running single-stage or double reduction structure, the casing flask joint generally all is level or oblique, generally adopt the three fens box structures in upper, middle and lower, the flask joint of each casing is a single plane, do not exist needs to guarantee two flask joint angle problems, processing method is simple.And high-power dualratio reduction marine gearbox is owing to have three cover clutches, in order to guarantee the dismounting easily of every cover clutch, the vertical vertical plane of upper box from the top axis hole need be separated, so just cause two upper boxes that two flask joints are arranged respectively, wherein the flask joint of two upper boxes respectively corresponding with them middle casing flask joint form several angle, guarantee fully contacting of upper box and middle casing junction plane, guarantee the casing machining accuracy, even equipment has very highi degree of accuracy, according to common process, each junction plane of casing is processed respectively, the whole boring method for processing of mould assembling then, also can't guarantee casing in conjunction with required precision.
Summary of the invention
The present invention solves the deficiencies in the prior art, and simple in structure, clamping is simple, and is easy to process, high-power dualratio reduction marine gear box body and processing method that precision is easy to guarantee, work efficiency is high.
Above-mentioned technical problem of the present invention is mainly solved by following technical proposals:
A kind of high-power dualratio reduction marine gear box body, comprise lower box, middle casing, last left box body, last right case, output shaft hole, reversing transmission axis hole, the fast shelves of ahead running transmission axis hole and the slow shelves of ahead running transmission axis hole, the top of described lower box is provided with the middle casing that fixes with it, the upper left quarter of casing is provided with the last left box body that fixes with it in described, the upper right quarter of casing is provided with the last right case that fixes with it in described, the flask joint of described lower box and middle casing is positioned on the horizontal plane at output shaft hole center, the flask joint of casing and last left box body is positioned on the line of centers of reversing transmission axis hole and the fast shelves of ahead running transmission axis hole in described, the flask joint of casing and last right case is positioned on the line of centers of reversing transmission axis hole and the slow shelves of ahead running transmission axis hole in described, and the described flask joint of going up left box body and last right case is positioned on the vertical vertical plane at the transmission axis hole center of moveing backward.
As preferably, the left-hand end of described lower box and right-hand end are respectively equipped with outward extending mounting bracket.
The processing method of high-power dualratio reduction marine gear box body, carry out according to the following steps:
(1), lower box, middle casing, go up left box body, go up right case weld respectively finish after, postwelding tempering destressing is handled, heating-up temperature is 600 ℃ ± 20 ℃, holding time is 2 hours, cools off with stove then;
(2), respectively each junction plane of the junction plane of lower box, the supporting surface of mounting bracket, middle casing is rough milled processing, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then middle casing is combined pin-and-hole and the bolt hole of casing and lower box junction plane in the processing with lower box;
(3), the junction plane of upper left casing and middle casing is rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper left casing is combined with middle casing, processes pin-and-hole and the bolt hole of upper left casing and middle casing junction plane, the pin-and-hole size requires little than finished product;
(4), the junction plane that will go up right case and middle casing rough mills processing earlier, rough mills 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper right casing is combined with middle casing, pin-and-hole and the bolt hole of right case and middle casing junction plane in the processing, the pin-and-hole size requires little than finished product;
(5), lower box and raising middle flask body and function bolt are connected firmly, be installed on the boring anchor clamps, behind the centering mounting point, carry out heavy boring processing input shaft bore and output shaft hole, will go up left box body and raising middle flask body and function bolt connects firmly, with the worktable half-twist, last left box body and last right case junction plane are rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; The perpendicular bisector in conjunction with plane and output shaft hole of last left box body and last right case coincides;
The point in conjunction with the perpendicular bisector top of the point of bottom, plane and output shaft hole of last left box body and last right case coincides.
(6), pull down left box body, will go up right case again and connect firmly with bolt and middle casing, worktable is returned Rotate 180 °, last left box body 30 is rough milled processing earlier with last right case junction plane, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; The perpendicular bisector in conjunction with plane and output shaft hole of last left box body and last right case coincides;
(7), pull down right case, the coupling bolt hole of right case and last left box body junction plane in the processing, to go up left box body is connected with raising middle flask body and function bolt respectively with last right case, the earlier fastening attachment bolt of going up right case and last left box body, tighten the attachment bolt of left box body and middle casing, last right case and middle casing more respectively, the positioning pin hole of right case and last left box body junction plane in the processing is machined to the finished product requirement to last left box body and middle casing, the positioning pin hole of going up the junction plane of right case and middle casing respectively;
(8), heavy boring reversing transmission axis hole, the fast shelves of ahead running transmission axis hole, ahead running slow shelves transmission axis hole and whole box body front/rear end on boring machine or machining center, after the natural ageing treatment of devaning 24 hours, again lower box, middle casing, last left box body and last right case are made up each axis hole of back fine finishing, end face to finished size.
Therefore, high-power dualratio reduction marine gear box body provided by the invention and processing method, easy to process, promote the machining accuracy height, promote the work efficiency height.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, technological scheme of the present invention is described in further detail.
Embodiment 1: as shown in Figure 1, a kind of high-power dualratio reduction marine gear box body, comprise lower box 1, middle casing 2, last left box body 3, last right case 4, output shaft hole 5, reversing transmission axis hole 6, the fast shelves of ahead running transmission axis hole 7 and the slow shelves of ahead running transmission axis hole 8, the top of described lower box 1 is provided with the middle casing 2 that fixes with it, the upper left quarter of casing 2 is provided with the last left box body 3 that fixes with it in described, the upper right quarter of casing 2 is provided with the last right case 4 that fixes with it in described, described lower box 1 is positioned on the horizontal plane at output shaft hole 5 centers with the flask joint of middle casing 2, casing 2 is positioned on the line of centers of reversing transmission axis hole 6 and the fast shelves of ahead running transmission axis hole 7 with the flask joint of last left box body 3 in described, casing 2 is positioned on the line of centers of reversing transmission axis hole 6 and the slow shelves of ahead running transmission axis hole 8 with the flask joint of last right case 4 in described, and the described flask joint of going up left box body 3 and last right case 4 is positioned on the vertical vertical plane at reversing transmission axis hole 6 centers.The left-hand end of described lower box 1 and right-hand end are respectively equipped with outward extending mounting bracket 9.
The processing method of high-power dualratio reduction marine gear box body, carry out according to the following steps:
(1), lower box 1, middle casing 2, go up left box body 3, go up right case 4 weld respectively finish after, postwelding tempering destressing processing, heating-up temperature is 580 ℃, holding time is 2 hours, cools off with stove then;
(2), respectively the junction plane of lower box 1, the supporting surface of mounting bracket 9, each junction plane of middle casing 2 are rough milled processing, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 160 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then with middle casing 2 and lower box 1 combination, pin-and-hole and the bolt hole of casing 2 and lower box 1 junction plane in the processing;
(3), upper left casing 3 and the junction plane of middle casing 2 are rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 160 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper left casing is combined with middle casing, processes pin-and-hole and the bolt hole of upper left casing 3 and middle casing 2 junction planes, the pin-and-hole size requires little than finished product;
(4), will go up right case 4 and rough mill processing earlier with the junction plane of middle casing 2, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 160 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper right casing is combined with middle casing, pin-and-hole and the bolt hole of right case 4 and middle casing 2 junction planes in the processing, the pin-and-hole size requires little than finished product;
(5), lower box 1 and middle casing 2 usefulness bolts are connected firmly, be installed on the boring anchor clamps, behind the centering mounting point, carry out heavy boring processing input shaft bore and output shaft hole, will go up left box body 3 and connect firmly with middle casing 2 usefulness bolts, with the worktable half-twist, last left box body 3 is rough milled processing earlier with last right case 4 junction planes, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 160 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body 3 coincides with the perpendicular bisector in conjunction with plane and output shaft hole 5 of last right case 4;
(6), pull down left box body 3, will go up right case 4 usefulness bolts and middle casing 2 again and connect firmly, worktable is returned Rotate 180 °, last left box body 3 is rough milled processing earlier with last right case 4 junction planes, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 160 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body 3 coincides with the perpendicular bisector in conjunction with plane and output shaft hole 5 of last right case 4;
(7), pull down right case 4, the coupling bolt hole of right case 4 and last left box body 3 junction planes in the processing, to go up left box body 3 is connected with middle casing 2 usefulness bolts respectively with last right case 4, the earlier fastening attachment bolt of going up right case 4 and last left box body 3, tighten the attachment bolt of left box body 3 and middle casing 2, last right case 4 and middle casing 2 more respectively, the positioning pin hole of right case 4 and last left box body 3 junction planes in the processing is machined to the finished product requirement to last left box body 3 and middle casing 2, last right case 4 with the positioning pin hole of the junction plane of middle casing 2 respectively;
(8), heavy boring reversing transmission axis hole 6, the fast shelves of ahead running transmission axis hole 7, ahead running slow shelves transmission axis hole 8 and whole box body front/rear end on boring machine or machining center, after the natural ageing treatment of devaning 24 hours, again lower box 1, middle casing 2, last left box body 3 and last right case 4 are made up each axis hole of back fine finishing, end face to finished size.
Embodiment 2: the processing method of high-power dualratio reduction marine gear box body, carry out according to the following steps:
(1), lower box 1, middle casing 2, go up left box body 3, go up right case 4 weld respectively finish after, postwelding tempering destressing processing, heating-up temperature is 600 ℃, holding time is 2 hours, cools off with stove then;
(2), respectively the junction plane of lower box 1, the supporting surface of mounting bracket 9, each junction plane of middle casing 2 are rough milled processing, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then with middle casing 2 and lower box 1 combination, pin-and-hole and the bolt hole of casing 2 and lower box 1 junction plane in the processing;
(3), upper left casing 3 and the junction plane of middle casing 2 are rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper left casing is combined with middle casing, processes pin-and-hole and the bolt hole of upper left casing 3 and middle casing 2 junction planes, the pin-and-hole size requires little than finished product;
(4), will go up right case 4 and rough mill processing earlier with the junction plane of middle casing 2, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper right casing is combined with middle casing, pin-and-hole and the bolt hole of right case 4 and middle casing 2 junction planes in the processing, the pin-and-hole size requires little than finished product;
(5), lower box 1 and middle casing 2 usefulness bolts are connected firmly, be installed on the boring anchor clamps, behind the centering mounting point, carry out heavy boring processing input shaft bore and output shaft hole, will go up left box body 3 and connect firmly with middle casing 2 usefulness bolts, with the worktable half-twist, last left box body 3 is rough milled processing earlier with last right case 4 junction planes, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body 3 coincides with the perpendicular bisector in conjunction with plane and output shaft hole 5 of last right case 4;
(6), pull down left box body 3, will go up right case 4 usefulness bolts and middle casing 2 again and connect firmly, worktable is returned Rotate 180 °, last left box body 3 is rough milled processing earlier with last right case 4 junction planes, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body 3 coincides with the perpendicular bisector in conjunction with plane and output shaft hole 5 of last right case 4;
(7), pull down right case 4, the coupling bolt hole of right case 4 and last left box body 3 junction planes in the processing, to go up left box body 3 is connected with middle casing 2 usefulness bolts respectively with last right case 4, the earlier fastening attachment bolt of going up right case 4 and last left box body 3, tighten the attachment bolt of left box body 3 and middle casing 2, last right case 4 and middle casing 2 more respectively, the positioning pin hole of right case 4 and last left box body 3 junction planes in the processing is machined to the finished product requirement to last left box body 3 and middle casing 2, last right case 4 with the positioning pin hole of the junction plane of middle casing 2 respectively;
(8), heavy boring reversing transmission axis hole 6, the fast shelves of ahead running transmission axis hole 7, ahead running slow shelves transmission axis hole 8 and whole box body front/rear end on boring machine or machining center, after the natural ageing treatment of devaning 24 hours, again lower box 1, middle casing 2, last left box body 3 and last right case 4 are made up each axis hole of back fine finishing, end face to finished size.
Embodiment 3: the processing method of high-power dualratio reduction marine gear box body, carry out according to the following steps:
(1), lower box 1, middle casing 2, go up left box body 3, go up right case 4 weld respectively finish after, postwelding tempering destressing processing, heating-up temperature is 620 ℃, holding time is 2 hours, cools off with stove then;
(2), respectively the junction plane of lower box 1, the supporting surface of mounting bracket 9, each junction plane of middle casing 2 are rough milled processing, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 200 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then with middle casing 2 and lower box 1 combination, pin-and-hole and the bolt hole of casing 2 and lower box 1 junction plane in the processing;
(3), upper left casing 3 and the junction plane of middle casing 2 are rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 200 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper left casing is combined with middle casing, processes pin-and-hole and the bolt hole of upper left casing 3 and middle casing 2 junction planes, the pin-and-hole size requires little than finished product;
(4), will go up right case 4 and rough mill processing earlier with the junction plane of middle casing 2, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 200 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper right casing is combined with middle casing, pin-and-hole and the bolt hole of right case 4 and middle casing 2 junction planes in the processing, the pin-and-hole size requires little than finished product;
(5), lower box 1 and middle casing 2 usefulness bolts are connected firmly, be installed on the boring anchor clamps, behind the centering mounting point, carry out heavy boring processing input shaft bore and output shaft hole, will go up left box body 3 and connect firmly with middle casing 2 usefulness bolts, with the worktable half-twist, last left box body 3 is rough milled processing earlier with last right case 4 junction planes, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 200 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body 3 coincides with the perpendicular bisector in conjunction with plane and output shaft hole 5 of last right case 4;
(6), pull down left box body 3, will go up right case 4 usefulness bolts and middle casing 2 again and connect firmly, worktable is returned Rotate 180 °, last left box body 3 is rough milled processing earlier with last right case 4 junction planes, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 200 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body 3 coincides with the perpendicular bisector in conjunction with plane and output shaft hole 5 of last right case 4;
(7), pull down right case 4, the coupling bolt hole of right case 4 and last left box body 3 junction planes in the processing, to go up left box body 3 is connected with middle casing 2 usefulness bolts respectively with last right case 4, the earlier fastening attachment bolt of going up right case 4 and last left box body 3, tighten the attachment bolt of left box body 3 and middle casing 2, last right case 4 and middle casing 2 more respectively, the positioning pin hole of right case 4 and last left box body 3 junction planes in the processing is machined to the finished product requirement to last left box body 3 and middle casing 2, last right case 4 with the positioning pin hole of the junction plane of middle casing 2 respectively;
(8), heavy boring reversing transmission axis hole 6, the fast shelves of ahead running transmission axis hole 7, ahead running slow shelves transmission axis hole 8 and whole box body front/rear end on boring machine or machining center, after the natural ageing treatment of devaning 24 hours, again lower box 1, middle casing 2, last left box body 3 and last right case 4 are made up each axis hole of back fine finishing, end face to finished size.
Claims (3)
1. high-power dualratio reduction marine gear box body, it is characterized in that: comprise lower box (1), middle casing (2), last left box body (3), last right case (4), output shaft hole (5), reversing transmission axis hole (6), ahead running fast shelves transmission axis hole (7) and the slow shelves of ahead running transmission axis hole (8), the top of described lower box (1) is provided with the middle casing (2) that fixes with it, the upper left quarter of casing (2) is provided with the last left box body (3) that fixes with it in described, the upper right quarter of casing (2) is provided with the last right case (4) that fixes with it in described, described lower box (1) is positioned on the horizontal plane at output shaft hole (5) center with the flask joint of middle casing (2), casing (2) is positioned on the line of centers of reversing transmission axis hole (6) and ahead running fast shelves transmission axis holes (7) with the flask joint of last left box body (3) in described, casing (2) is positioned on the line of centers of reversing transmission axis hole (6) and ahead running slow shelves transmission axis holes (8) with the flask joint of last right case (4) in described, and the described flask joint of going up left box body (3) and last right case (4) is positioned on the vertical vertical plane at reversing transmission axis hole (6) center.
2. high-power dualratio reduction marine gear box body according to claim 1, it is characterized in that: the left-hand end of described lower box (1) and right-hand end are respectively equipped with outward extending mounting bracket (9).
3. the processing method of high-power dualratio reduction marine gear box body according to claim 1 is characterized in that carrying out according to the following steps:
(1), lower box (1), middle casing (2), go up left box body (3), go up right case (4) weld respectively finish after, postwelding tempering destressing processing, heating-up temperature is 600 ℃ ± 20 ℃, holding time is 2 hours, cools off with stove then;
(2), respectively each junction plane of the junction plane of lower box (1), the supporting surface of mounting bracket (9), middle casing (2) is rough milled processing, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then with middle casing (2) and lower box (1) combination, pin-and-hole and the bolt hole of casing in the processing (2) and lower box (1) junction plane;
(3), the junction plane of upper left casing (3) and middle casing (2) is rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper left casing is combined with middle casing, processes pin-and-hole and the bolt hole of upper left casing (3) and middle casing (2) junction plane, the pin-and-hole size requires little than finished product;
(4), the junction plane that will go up right case (4) and middle casing (2) rough mills processing earlier, rough mills 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Then upper right casing is combined with middle casing, pin-and-hole and the bolt hole of right case in the processing (4) and middle casing (2) junction plane, the pin-and-hole size requires little than finished product;
(5), lower box (1) and middle casing (2) are connected firmly with bolt, be installed on the boring anchor clamps, behind the centering mounting point, carry out heavy boring processing input shaft bore and output shaft hole, will go up left box body (3) and connect firmly with bolt with middle casing (2), with the worktable half-twist, last left box body (3) and last right case (4) junction plane are rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body (3) coincides with the perpendicular bisector in conjunction with plane and output shaft hole (5) of last right case (4);
(6), pull down left box body (3), to go up right case (4) again connects firmly with bolt and middle casing (2), worktable is returned Rotate 180 °, last left box body (3) and last right case (4) junction plane are rough milled processing earlier, rough mill 2 feeds of processing, the degree of depth of every cutter depth of cut is 1.3mm, and roughness is Ra=25; After rough milling processing, carry out tempering again and remove machining stress, heating-up temperature is 180 ℃ ± 20 ℃, and holding time is 2 hours, cools off with stove then; Carry out the processing of half finish-milling again, 1 feed of half finish-milling processing, the degree of depth of every cutter depth of cut is 0.8mm, roughness is Ra=12.5; Carry out finish-milling processing then, 1 feed of finish-milling processing, the degree of depth of every cutter depth of cut is 0.5mm, roughness is Ra=3.2; Last left box body (3) coincides with the perpendicular bisector in conjunction with plane and output shaft hole (5) of last right case (4);
(7), pull down right case (4), the coupling bolt hole of right case in the processing (4) and last left box body (3) junction plane, to go up left box body (3) is connected with bolt with middle casing (2) respectively with last right case (4), the earlier fastening attachment bolt of going up right case (4) and last left box body (3), tighten left box body (3) and middle casing (2) more respectively, the attachment bolt of last right case (4) and middle casing (2), the positioning pin hole of right case in the processing (4) and last left box body (3) junction plane is respectively to last left box body (3) and middle casing (2), last right case (4) is machined to the finished product requirement with the positioning pin hole of the junction plane of middle casing (2);
(8), heavy boring reversing transmission axis hole (6), the fast shelves of ahead running transmission axis hole (7), ahead running slow shelves transmission axis hole (8) and whole box body front/rear end on boring machine or machining center, after the natural ageing treatment of devaning 24 hours, again lower box (1), middle casing (2), last left box body (3) and last right case (4) are made up each axis hole of back fine finishing, end face to finished size.
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| CN103990939A (en) * | 2014-04-16 | 2014-08-20 | 靖江市顺达模具厂 | Method for machining automobile transmission front body |
| CN104384878A (en) * | 2014-11-19 | 2015-03-04 | 江苏恒义汽配制造有限公司 | Left box machining method for automobile primary reduction gearbox |
| CN105299185A (en) * | 2015-11-09 | 2016-02-03 | 重庆齿轮箱有限责任公司 | Centering method for assembly and machining of box bodies of large gearbox with planet structure |
| CN105643212A (en) * | 2016-02-29 | 2016-06-08 | 淮阴工学院 | Machining method for integrated heavy load reducer boxes for rolling mill |
| CN105690034A (en) * | 2016-02-24 | 2016-06-22 | 湖南汉星机械制造有限公司 | Integral machining technique for left box part and right box part of small gasoline engine box body |
| CN107420491A (en) * | 2017-05-26 | 2017-12-01 | 杭州发达齿轮箱集团有限公司 | A kind of especially big speed reducing ratio marine gearbox of dualratio reduction and its operating method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105643212A (en) * | 2016-02-29 | 2016-06-08 | 淮阴工学院 | Machining method for integrated heavy load reducer boxes for rolling mill |
| CN107420491A (en) * | 2017-05-26 | 2017-12-01 | 杭州发达齿轮箱集团有限公司 | A kind of especially big speed reducing ratio marine gearbox of dualratio reduction and its operating method |
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