CN106181496A - Single reduction gear output shaft bearing hole right boring processing clamping device and processing method - Google Patents
Single reduction gear output shaft bearing hole right boring processing clamping device and processing method Download PDFInfo
- Publication number
- CN106181496A CN106181496A CN201610821671.3A CN201610821671A CN106181496A CN 106181496 A CN106181496 A CN 106181496A CN 201610821671 A CN201610821671 A CN 201610821671A CN 106181496 A CN106181496 A CN 106181496A
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- Prior art keywords
- clamping device
- output shaft
- box cover
- reduction gear
- shaft bearing
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Classifications
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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
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
- B23B49/02—Boring templates or bushings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a kind of single reduction gear output shaft bearing hole right boring processing clamping device, including base plate and be arranged on base plate and for the detent mechanism that the box cover molectron of decelerator is positioned, for compressing the hold-down mechanism of box cover molectron and for the bore hole guiding mechanism that boring cutter is guided.The single reduction gear output shaft bearing hole right boring processing clamping device of the present invention, simple in construction, easy to operate, by arranging detent mechanism, hold-down mechanism and bore hole guiding mechanism, i.e. realize the accurate clamping to box cover molectron and location, improve the right boring machining accuracy of dead eye in box cover molectron, also improve the reliability of clamping efficiency and compression, working (machining) efficiency is higher, and the employee processing this product especially can operation on duty without training.Present invention also offers the machining method for finely boring in a kind of single reduction gear output shaft bearing hole.
Description
Technical field
The invention belongs to clamping device technical field, specifically, the present invention relates to a kind of single reduction gear output shaft axle
Bearing bore right boring processing clamping device and the machining method for finely boring in single reduction gear output shaft bearing hole.
Background technology
In the processing of single reduction gear, wherein there is one procedure important, it is simply that adding of reducer output shaft dead eye
Work, owing to this center, hole is placed exactly on the separating surface of reduction case and case lid, adds and casing and case lid must be combined man-hour
Process together and just can meet technology requirement, especially process the finishing operation right boring in this hole, require relatively stricter especially, this
Main is that box cover is combined the orientation problem adding dead eye in man-hour, because one is box cover Working position altogether
Bad determining, two is that the position of this dead eye is the highest on decelerator, it is easy to occur the biggest due to deflection when right boring
Error.
And add man-hour actual, determine owing to the position of box cover molectron is bad so that at machine during processing dead eye
On bed, position error is bigger, and the machining accuracy causing dead eye is relatively low.
Summary of the invention
It is contemplated that at least solve one of technical problem present in prior art.To this end, the present invention provides a kind of single
Level reducer output shaft dead eye right boring processing clamping device and the machining method for finely boring in single reduction gear output shaft bearing hole,
Purpose is to improve the right boring machining accuracy of dead eye.
To achieve these goals, the technical scheme that the present invention takes is: the hole right boring of single reduction gear output shaft bearing adds
Work clamping device, including base plate and be arranged on base plate and for the location positioning the box cover molectron of decelerator
Mechanism, for compressing the hold-down mechanism of box cover molectron and for the bore hole guiding mechanism that boring cutter is guided.
Described detent mechanism includes several support nails being vertically arranged on described base plate, and the end face of support nail is for being used for
The plane contacted with box cover molectron.
Described hold-down mechanism includes the first support column being vertically arranged on described base plate and is set on the first support column
Pressing plate, pressing plate is by the locking nut locking being located on the first support column, on the first support column and be arranged with for executing pressing plate
Add the cylindrically coiled spring of active force.
Described hold-down mechanism also includes being vertically arranged on described base plate and for described pressing plate provides the of support force
Two support columns.
Described hold-down mechanism also includes being sheathed on described first support column and be positioned at described pressing plate and described locking nut
Between the first packing ring and the second packing ring.
Described first packing ring is spheric washer, and described second packing ring is taper faced washer.
Described detent mechanism also includes two alignment pins being located on described base plate, and one of them is circular alignment pin, separately
One is diamond positioning pin.
Described bore hole guiding mechanism includes the boring mould bracket being arranged on described base plate and the bushing being arranged on boring mould bracket, boring
Set has the pilot hole allowing boring cutter pass.
Described hold-down mechanism arranges two in the first direction, and described bore hole guiding mechanism arranges two in a second direction, the
One direction and second direction are perpendicular.
Present invention also offers the machining method for finely boring in a kind of single reduction gear output shaft bearing hole, including to decelerator
Box cover molectron carries out the clamping operation of clamping, uses above-mentioned clamping device, clamping operation to include in described clamping operation
Step:
S1, clamping device is arranged on boring machine；
Detent mechanism on S2, use clamping device completes the location of box cover molectron, and detent mechanism includes some
Individual end face is the support nail of plane, and box cover molectron is placed on the supporting plane that support nail is formed with its bottom surface；
S3, the clamping using the hold-down mechanism on clamping device to complete box cover molectron are fixed, after completing clamping
The supporting plane that the axis of the dead eye in box cover molectron is formed with support nail is paralleled.
The single reduction gear output shaft bearing hole right boring processing clamping device of the present invention, simple in construction, easy to operate, logical
Cross and detent mechanism, hold-down mechanism and bore hole guiding mechanism be set, i.e. realize the accurate clamping to box cover molectron and location,
Improve the right boring machining accuracy of dead eye in box cover molectron, also improve the reliability of clamping efficiency and compression,
Working (machining) efficiency is higher, and the employee processing this product especially can operation on duty without training.
Accompanying drawing explanation
This specification includes the following drawings, shown content respectively:
Fig. 1 is the front view of clamping device of the present invention；
Fig. 2 is the top view of clamping device of the present invention；
Fig. 3 is the side view of clamping device of the present invention
Figure is labeled as: 1, base plate；2, support nail；3, casing；4, alignment pin；5, case lid；6, locking nut；7, pressing plate；
8, boring mould bracket；9, boring template lining；10, bushing；11, bushing screw；12, dead eye；13, soket head cap screw；14, circular location
Pin；15, diamond positioning pin；16, anti-spin slot；17, the second support column；18, the first support column；19, cylindrically coiled spring；20, flat
Packing ring；21, the first packing ring；22, the second packing ring.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, the detailed description of the invention of the present invention is made further details of
Explanation, it is therefore an objective to help those skilled in the art that design, the technical scheme of the present invention are had more complete, accurate and deep reason
Solve, and contribute to its enforcement.
As shown in Figure 1 to Figure 3, the invention provides a kind of single reduction gear output shaft bearing hole right boring processing clamping dress
Put, including base plate 1 and be arranged on base plate 1 and for the detent mechanism that the box cover molectron of decelerator is positioned, use
In compressing the hold-down mechanism of box cover molectron and for the bore hole guiding mechanism that boring cutter is guided.
Specifically, as shown in Figure 1 to Figure 3, box cover molectron is by case lid 5 and casing 3 split and by location
Pin 4 realizes assembling total member that is fixing and that formed, and the output shaft bearing hole 12 box cover molectron needing right boring process is position
Circular hole on the two sides that box cover molectron is relative, these two sides are bearing cap faying face and are the axis with dead eye
Perpendicular plane, is used for installing bearing in dead eye 12, and the bearing being installed in dead eye 12 is for the output to decelerator
Axle provides and supports.
As shown in Figure 1 to Figure 3, base plate 1 is the rectangular flat of horizontal positioned, and the end face of base plate 1 is horizontal plane.Detent mechanism
Including several support nails 2 being vertically arranged on base plate 1, the end face of support nail 2 is for the end with box cover molectron
The plane of face contact, bottom surface (i.e. the bottom surface of casing 3) the substantially rectangular plane of box cover molectron.Support nail 2 is at base plate 1
End face on two row are set altogether, nail 2 of being respectively disbursed from the cost and expenses is in the same straight line that the length direction with box cover molectron is parallel
On, the axis of support nail 2 is perpendicular with the end face of base plate 1, and the end face of support nail 2 is plane, and the end face of all support nails 2 is with mill
Forming the location plane in box cover molectron clamping process, box cover molectron is placed in support nail 2 shape with its bottom surface
On the supporting plane become.
As preferably, support nail 2 is with base plate 1 for threadeding, and the insertion section of support nail 2 has external screw thread, on base plate 1
It is provided with the screwed hole allowing the insertion section of support nail 2 insert.Support nail 2 is arranged to threaded with base plate 1, it is simple to regulation support nail
The apical side height of 2, is convenient for changing, fixed.
The hold-down mechanism of this clamping device matches to compress box cover molectron with detent mechanism, and hold-down mechanism is arranged
At end positions on box cover molectron length direction, at the two ends of box cover molectron by box cover molectron
It is pressed on the supporting plane formed by support nail 2.As shown in Figure 1 to Figure 3, hold-down mechanism includes being vertically arranged on base plate 1
The first support column 18, the pressing plate 7 being set on the first support column 18, be sheathed on the first support column 18 and be positioned at pressing plate 7
The locking nut 6 of top and be sheathed on the first support column 18 and be positioned at the cylindrically coiled spring 19 below pressing plate 7, pressing plate 7 by
The locking nut 6 being located on the first support column 18 is locked, and cylindrically coiled spring 19 is for applying active force to pressing plate 7.On pressing plate 7
Be provided with the through hole for allowing the first support column 18 pass, the first support column 18 is positioned at pressing plate 7 be arranged over threaded
Locking nut 6, the lower section that the first support column 18 is positioned at pressing plate 7 is also arranged with a cylindrically coiled spring 19, this cylindrical screw
Spring 19 one end conflict pressing plate 7, the other end is against on the nut bottom the first support column 18.When clamping, screw the first support
Locking nut 6 on post 18, the sidewall (i.e. the sidewall of casing 3) that pressing plate 7 can be made to be pressed on box cover molectron has
On ring flange, the clamping completing box cover molectron is fixed.
As shown in Figure 1 to Figure 3, as preferably, the most Y-shaped structure of pressing plate 7, its have two for box cover
Molectron contact clamping arm, two clamping arms of each pressing plate 7 respectively in the both sides, end of box cover molectron to casing
Case lid molectron applies pressure.The end of the clamping arm on pressing plate 7 is provided with the pressure pad for contacting with box cover molectron, pressure
Pad uses nylon material to make, in case box cover molectron being produced excessive permanent compressive strain when clamping, and ought be many
Secondary clamping can be changed during pressure pad generation excessive deformation in time.
As shown in Figure 1 to Figure 3, hold-down mechanism also includes being vertically arranged on base plate 1 and props up bulging at the other end of pressing plate 7
Second support column 17 of plate 7, the second support column 17 parallels with the first support column 18, and the first support column 18 is also positioned at the second support
Between post 17 and support nail 2.Pressing plate 7 is formed and supports by the second support column 17, it is ensured that pressing plate 7 reliable clamping.As preferably, press
Plate 7 is provided with the anti-spin slot 16 allowing the top of the second support column 17 embed, anti-spin slot 16 be on the bottom surface of pressing plate 7 initially towards
The groove that pressing plate 7 internal recess is formed, and the elongated slot that anti-spin slot 16 is the length direction extension along pressing plate 7, the width of anti-spin slot 16
Spending roughly equal with the diameter of the second support column 17, the top of the second support column 17 embeds in anti-spin slot 16, can avoid pressing plate 7
Rotate, improve the reliability of clamping.
As shown in Figure 1 to Figure 3, hold-down mechanism also includes that the first packing ring 21, second being sheathed on the first support column 18 pads
Circle 22 and plain washer 20, the first packing ring 21 and the second packing ring 22 is clamped between pressing plate 7 and locking nut 6 and 21, the first packing ring
In the top of the second packing ring 22, plain washer 20 is clamped between pressing plate 7 and cylindrically coiled spring 19.As preferably, first pads
Circle 21 is spheric washer, and the second packing ring 22 is the taper faced washer matched with spheric washer, and locking nut 6 can be avoided to loosen,
Improve reliability.
As shown in Figure 1 to Figure 3, detent mechanism also includes two alignment pins being located on base plate 1, and one of them is circular fixed
Position pin 14, another is diamond positioning pin 15, and circular alignment pin 14 and diamond positioning pin 15 are in same respectively with string support nail 2
On one straight line, and the support nail 2 of each row is respectively at circular alignment pin 14 and the same side of diamond positioning pin 15.At box cover
On the bottom surface of molectron, choosing has the location hole suitable with two alignment pins respectively, and the bottom surface of box cover molectron is that rectangle is put down
Face, on the same diagonal of the bottom surface that hole, two location is in box cover molectron, therefore circular alignment pin 14 and rhombus are fixed
Position pin 15, for being staggeredly arranged, arranges alignment pin more accurately reliable to ensure that box cover molectron adds location in man-hour.
As shown in Figure 1 to Figure 3, in the present embodiment, support nail 2 arranges six on base plate 1 altogether, six support nails 2 in
Two row are arranged, each row arrange three support nails 2.
As shown in Figure 1 to Figure 3, bore hole guiding mechanism includes the boring mould bracket 8 being vertically arranged on base plate and is arranged at boring template
Bushing 10 on frame 8, boring mould bracket 8 is fixedly installed on the end face of base plate 1 by soket head cap screw 13, and bushing 10 is by bushing spiral shell
Nail 11 is fixedly installed on boring mould bracket 8.The center of bushing 10 has the pilot hole allowing the boring cutter on boring machine pass, this pilot hole
For circular hole, the axis of pilot hole is paralleled with the end face of base plate 1 and perpendicular with the length direction of pressing plate, pilot hole and clamping
Dead eye 12 in box cover molectron after Gu Ding is coaxial.Man-hour is added, on boring machine dead eye 12 is carried out right boring
After boring cutter horizontally passes through the pilot hole on bushing 10, insert in dead eye 12.
As shown in Figure 1 to Figure 3, as preferably, boring template lining 9 it is provided with between bushing 10 and boring mould bracket 8, on boring mould bracket 8
Being provided with the installing hole allowing boring template lining 9 embed, the center of boring template lining 9 has the centre bore allowing bushing 10 embed.Bushing 10
And be fixed on boring mould bracket 8 by bushing screw 11, easy disassembly and replacing, and guiding accuracy is high.
As shown in Figure 1 to Figure 3, as preferably, hold-down mechanism arranges two in the first direction and two hold-down mechanisms are
Being symmetrical arranged, bore hole guiding mechanism arranges two and two bore hole guiding mechanisms in a second direction for being symmetrical arranged, first direction
Supporting plane that is perpendicular with second direction and that formed with support nail 2 is paralleled, and first direction is base plate 1 and box cover combination
The length direction of part, second direction is base plate 1 and the width of box cover molectron, and i.e. two hold-down mechanisms are at casing case
The two ends of lid molectron apply thrust to box cover molectron, and two bore hole guiding mechanisms are respectively in box cover molectron
Side boring cutter is simultaneously worked as guide effect, form Bidirectional supporting, it is ensured that the axiality of two dead eyes 12, improve bore hole essence
Degree.
Present invention also offers the machining method for finely boring in a kind of single reduction gear output shaft bearing hole, including to decelerator
Box cover molectron carries out clamping operation and follow-up bore hole operation etc., the primary object of processing method of the present invention of clamping
Being the improvement of clamping operation, other operation is similar with traditional diamond-making technique.The clamping using said structure in clamping operation fills
Putting, clamping operation comprises the following steps that
S1, clamping device is arranged on boring machine；
Detent mechanism on S2, use clamping device completes the location of box cover molectron, and detent mechanism includes some
Individual end face is the support nail 2 of plane, and box cover molectron is placed on the supporting plane that support nail 2 is formed with its bottom surface；
S3, the clamping using the hold-down mechanism on clamping device to complete box cover molectron are fixed, after completing clamping
The supporting plane that the axis of dead eye 12 to be processed in box cover molectron is formed with support nail 2 is paralleled, to be processed
The axis of dead eye 12 and paralleling with second direction, dead eye 12 to be processed is the most coaxial with the pilot hole on bushing.
In step s 2, when placing box cover molectron, circular alignment pin 14 and diamond positioning pin 15 need to be made respectively
Insert in the hole, a location on the bottom surface of box cover molectron, to guarantee that box cover molectron position is put correctly.
After the clamping using clamping device to complete box cover molectron is fixed, carry out bore hole operation, and by two
Bore hole guiding mechanism provides guide effect to boring cutter, can improve machining accuracy and the working (machining) efficiency of bore hole.When bore hole, boring cutter
After passing the pilot hole on the bushing 10 of a boring cutter guiding mechanism in a second direction, continue to move through two in a second direction
Individual dead eye 12, finally the pilot hole from the bushing 10 of another boring cutter guiding mechanism passes.
Above in association with accompanying drawing, the present invention is exemplarily described.Obviously, the present invention implements not by above-mentioned side
The restriction of formula.As long as the improvement of the various unsubstantialities that the method design that have employed the present invention is carried out with technical scheme；Or not
Improved, above-mentioned design and the technical scheme of the present invention are directly applied to other occasion, all in protection scope of the present invention
Within.
Claims (10)
1. single reduction gear output shaft bearing hole right boring processing clamping device, it is characterised in that include base plate and be arranged at
On base plate and for the detent mechanism that the box cover molectron of decelerator is positioned, for compressing the pressure of box cover molectron
Tight mechanism and for the bore hole guiding mechanism that boring cutter is guided.
Right boring processing clamping device in single reduction gear output shaft bearing hole the most according to claim 1, it is characterised in that
Described detent mechanism includes several support nails being vertically arranged on described base plate, and the end face of support nail is for being used for and casing case
The plane of lid molectron contact.
Right boring processing clamping device in single reduction gear output shaft bearing hole the most according to claim 2, it is characterised in that
Described hold-down mechanism includes the first support column being vertically arranged on described base plate and the pressing plate being set on the first support column, pressure
Plate is by the locking nut locking being located on the first support column, on the first support column and be arranged with for pressing plate is applied active force
Cylindrically coiled spring.
Right boring processing clamping device in single reduction gear output shaft bearing hole the most according to claim 3, it is characterised in that
Described hold-down mechanism also includes being vertically arranged on described base plate and for described pressing plate provides the second support column of support force.
5., according to the single reduction gear output shaft bearing hole right boring processing clamping device described in claim 3 or 4, its feature exists
In, described hold-down mechanism also includes being sheathed on described first support column and between described pressing plate and described locking nut
First packing ring and the second packing ring.
Right boring processing clamping device in single reduction gear output shaft bearing hole the most according to claim 5, it is characterised in that
Described first packing ring is spheric washer, and described second packing ring is taper faced washer.
Right boring processing clamping device in single reduction gear output shaft bearing hole the most according to claim 6, it is characterised in that
Described detent mechanism also includes two alignment pins being located on described base plate, and one of them is circular alignment pin, and another is Pedicellus et Pericarpium Trapae
Shape alignment pin.
8., according to the arbitrary described single reduction gear output shaft bearing hole right boring processing clamping device of claim 1 to 7, it is special
Levying and be, described bore hole guiding mechanism includes the boring mould bracket being arranged on described base plate and the bushing being arranged on boring mould bracket, boring
Set has the pilot hole allowing boring cutter pass.
Right boring processing clamping device in single reduction gear output shaft bearing hole the most according to claim 8, it is characterised in that
Described hold-down mechanism arranges two in the first direction, and described bore hole guiding mechanism arranges two in a second direction, first direction and
Second direction is perpendicular.
10. the machining method for finely boring in single reduction gear output shaft bearing hole, is carried out including to the box cover molectron of decelerator
The clamping operation of clamping, it is characterised in that use the arbitrary described clamping device of claim 1 to 9, dress in described clamping operation
Folder operation includes step:
S1, clamping device is arranged on boring machine；
Detent mechanism on S2, use clamping device completes the location of box cover molectron, and detent mechanism includes that several push up
Face is the support nail of plane, and box cover molectron is placed on the supporting plane that support nail is formed with its bottom surface；
S3, the clamping using the hold-down mechanism on clamping device to complete box cover molectron are fixed, and complete the casing after clamping
The supporting plane that the axis of the dead eye in case lid molectron is formed with support nail is paralleled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610821671.3A CN106181496A (en) | 2016-09-13 | 2016-09-13 | Single reduction gear output shaft bearing hole right boring processing clamping device and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610821671.3A CN106181496A (en) | 2016-09-13 | 2016-09-13 | Single reduction gear output shaft bearing hole right boring processing clamping device and processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106181496A true CN106181496A (en) | 2016-12-07 |
Family
ID=58067630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610821671.3A Pending CN106181496A (en) | 2016-09-13 | 2016-09-13 | Single reduction gear output shaft bearing hole right boring processing clamping device and processing method |
Country Status (1)
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| CN (1) | CN106181496A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513768A (en) * | 2017-01-11 | 2017-03-22 | 洛阳启明超硬材料有限公司 | Equipment for boring holes in hinge beam of six-side top hydraulic machine |
| CN107803687A (en) * | 2017-12-12 | 2018-03-16 | 重庆望江工业有限公司 | A kind of fixture that large-scale wind electricity gear housing is processed on horizontal Machining centers |
| CN108177001A (en) * | 2018-01-19 | 2018-06-19 | 南通职业大学(江苏省南通技师学院、江苏省南通市高级技工学校) | Transmission case body, its boring jig and application method with two concurrent aces holes |
| CN111618350A (en) * | 2020-05-28 | 2020-09-04 | 安徽省黄山台钻有限公司 | Boring jig and method for boring by using same |
| CN113523847A (en) * | 2020-10-16 | 2021-10-22 | 青岛汽车零部件科技创新服务有限公司 | Novel machining device for parts such as rotary box cover |
| CN115302199A (en) * | 2022-08-08 | 2022-11-08 | 中国第一汽车股份有限公司 | Closed main speed reducer shell machining method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106513768A (en) * | 2017-01-11 | 2017-03-22 | 洛阳启明超硬材料有限公司 | Equipment for boring holes in hinge beam of six-side top hydraulic machine |
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| CN107803687B (en) * | 2017-12-12 | 2024-01-05 | 重庆望江工业有限公司 | Clamp for machining large wind power gear box body on horizontal machining center |
| CN108177001A (en) * | 2018-01-19 | 2018-06-19 | 南通职业大学(江苏省南通技师学院、江苏省南通市高级技工学校) | Transmission case body, its boring jig and application method with two concurrent aces holes |
| CN108177001B (en) * | 2018-01-19 | 2023-07-14 | 南通职业大学(江苏省南通技师学院、江苏省南通市高级技工学校) | Transmission case with two intersecting shaft holes, boring fixture and use method thereof |
| CN111618350A (en) * | 2020-05-28 | 2020-09-04 | 安徽省黄山台钻有限公司 | Boring jig and method for boring by using same |
| CN113523847A (en) * | 2020-10-16 | 2021-10-22 | 青岛汽车零部件科技创新服务有限公司 | Novel machining device for parts such as rotary box cover |
| CN115302199A (en) * | 2022-08-08 | 2022-11-08 | 中国第一汽车股份有限公司 | Closed main speed reducer shell machining method |
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