CN108127198A - A kind of gear milling clamper of knuckle end tooth - Google Patents
A kind of gear milling clamper of knuckle end tooth Download PDFInfo
- Publication number
- CN108127198A CN108127198A CN201711396914.4A CN201711396914A CN108127198A CN 108127198 A CN108127198 A CN 108127198A CN 201711396914 A CN201711396914 A CN 201711396914A CN 108127198 A CN108127198 A CN 108127198A
- Authority
- CN
- China
- Prior art keywords
- pedestal
- positioning column
- knuckle
- gear milling
- wedge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F23/00—Accessories or equipment combined with or arranged in, or specially designed to form part of, gear-cutting machines
- B23F23/02—Loading, unloading or chucking arrangements for workpieces
- B23F23/06—Chucking arrangements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
Abstract
The present invention relates to a kind of gear milling clampers of knuckle end tooth, and including pedestal, a supporting member is two pieces of support plates, is located at the submounts；One positioning column, left part and a swivel nut are connected, and the right end of positioning column is horizontally through two bushings in two support plates and therewith clearance fit；One left tapered sleeve cooperation abuts on the left part of the positioning column, and with swivel nut；One right tapered sleeve cooperation is on the right part of the positioning column；One is located by connecting on the left end stop member on the left part of the pedestal, is formed by one in the wedge of wedge seat and a upper end with handle of backward L-shaped；It further includes a lateral V-arrangement type clamping device for being located by connecting on the pedestal forepart and one and is located by connecting on the vertical V-arrangement type clamping device of the base rear portion.The present invention can be suitably used for the processing of end tooth on horizontal milling machine, can reduce labor intensity, improve production efficiency, saves production management cost, reduce manually and manufacture cost.
Description
Technical field
The present invention relates to clamping tool for machine work, specifically relate to a kind of mill teeth for the processing of heavy-duty vehicle bridge knuckle end tooth
Fixture.
Background technology
With the development of national heavy axle product market economy, the situation faced is severeer, domestic each heavy car owner
All in the road for seeking to develop by every means, it is unprecedented fierce to compete for machine factory and original equipment manufacturer.It is only constantly designed and work
Skill is improved, and the quality and quantity of product is caught just to adapt to the needs of market economy.Knuckle is that axle housing is connected in vehicle bridge with turning
To the key component of component, knuckle end face before is equipped with two corresponding pin holes, and equipped with two with turning member end face
It has sold positioning anti-rotation to act on, after Curve guide impeller, knuckle end face is changed to end tooth cooperation with vehicle bridge turning member end face, turns at present
Section end tooth is processed as linear cutter, and this method processes knuckle end tooth inefficiency and high processing costs, design specialized folder
Tool processing on horizontal milling machine can improve processing efficiency, reduce cost.A kind of suitable multi items disclosed in CN 206241396U
Automobile steering gear rack piston Gear Milling fixture, it includes guiding axis, and being slidably installed on the guiding axis has circular arc
Jaw, adjusting pad is provided in the bottom of fixture, and the adjusting pad can adjust the height of workpiece；The offside of the guiding axis is set
Radial positioning block is equipped with, the guiding axis and radial positioning block are used cooperatively carries out radial positioning to workpiece；The circular arc clamp
The offside of mouth is provided with cylinder piston rod；The axial direction of workpiece is provided with axial grip cylinder, the axial grip cylinder
Offside be provided with axially position block.It can adapt to the Gear Milling of plurality of specifications automobile steering gear rack piston, and can be with
Automatic loading/unloading setted structure on rack gear milling machine uses, while can fixture be adjusted to machining position rapidly after replacing workpiece
It puts without carrying out trial cut adjustment.Unquestionably, this be technical field a kind of good try.
Invention content
The object of the present invention is to provide a kind of gear milling clampers of knuckle end tooth, it can be suitably used for end tooth on horizontal milling machine
Processing can reduce labor intensity, improve production efficiency, save production management cost, reduce artificial and manufacture cost.
A kind of gear milling clamper of knuckle end tooth of the present invention, including pedestal, it is characterized in that：
One supporting member is the identical and parallel support plate of two block structures, is located above the middle part of the pedestal；
One positioning column, left part are connected with a swivel nut, and the right end of the positioning column is horizontally through in two support plate
Two bushings and clearance fit, the positioning column can rotate in two bushings therewith；
One left tapered sleeve cooperation abuts on the left part of the positioning column, and with the swivel nut；
One right tapered sleeve cooperation is on the right part of the positioning column；
One is located by connecting on the left end stop member on the left part of the pedestal, by a wedge seat in backward L-shaped and a upper end
Wedge with handle is formed, and the right side of the wedge seat is equipped with a vertical groove, and the left side of the wedge can be vertical recessed
It is slided up and down in slot；
One is located by connecting on the right side stop member on the right part of the pedestal, by a long cushion block and is fixed by screws in it
On right side block form；
Further include a lateral V-arrangement type clamping device for being located by connecting on the pedestal forepart and one be located by connecting on the pedestal after
The vertical V-arrangement type clamping device in portion.
The gear milling clamper of the knuckle end tooth further includes both heights and adjusts supporting member, is respectively provided at the support
The left and right sides of component, the both heights adjust the thread bush that supporting member is fixedly connected on the submounts by one and with
Mating connection hexagonal supporting screw and locking nut form.
Further, the lateral V-arrangement type clamping device, including be fixedly connected on the pedestal the first V-shape base, be located at
Eyelet bolt on the first V-shape base left end, the forked standard on the first V-shape base right end and washer, lower end pass through a pin
The hinged inverted eyelet bolt with the forked standard, further includes a pressing plate, and one end of the pressing plate passes through a pin and the movable joint
The upper end of bolt is hinged, and the upper end of the other end of the pressing plate and the inverted eyelet bolt coordinates, and passes through one the
The upper end of two nuts and the inverted eyelet bolt, which is connected, to be fastened；One is respectively equipped in the both sides of first V-shape base
Cushion block, two cushion block are fixed on the both sides of the first V-shape base by more the second screws；The center line of first V-shape base with
The positioning column center line is in same level, and the angle between two center lines is into 76 °.
Further, the vertical V-arrangement clamping device, the long riser being fixedly connected on the pedestal are fixedly connected on length
In the middle part of riser top and the second V-type seat of right part, one end is fixedly connected on the fulcrum bearing of long riser top left part, one end by the
Two are bolted to the supporting block with holes on the fulcrum bearing other end, further include and the supporting block other end cooperation with holes
T shapes housing screw, the V shaped slab being connected with the T shapes housing screw, the V shaped slab are corresponding with the second V-type seat.
It further, She You a lifting bolt in the four corners of the pedestal；In the bottom surface left and right ends of the pedestal
A positioning key is respectively provided with, and passes through screw and fixes.
Further, the wedge seat is fixedly connected on by two pins and four bolts on the left part of the pedestal.
The present invention can be suitably used for the processing of end tooth on horizontal milling machine, can not only reduce labor intensity, improve production efficiency,
Production management cost is saved, and artificial and manufacture cost can be reduced.
Description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the vertical view of Fig. 1；
Fig. 3 is the A-A sectional views of Fig. 1；
Fig. 4 is the B-B sectional views of Fig. 2.
In figure：1- pedestals, 2- wedge seats, the first nuts of 3-, 4- wedges, 5- handles, 6- swivel nuts, 7- tapered sleeves 1,
8- hexagonals support, 9- bushings, 10- positioning columns, 11- tapered sleeves, block on the right side of 12-, 13- long cushion blocks, 14- eyelet bolts,
15- is sold, 16- pressing plates, 17- cushion blocks, 18- screws, the second nuts of 19-, 20- forked standards, 21- washers, the first spiral shells of 22-
Bolt, 23- pin, the second bolts of 24-, 25- supporting blocks, 26- the first V-type seats, 27-V templates, 28- housing screws, 29-
Lifting bolt, 30- positioning keys, 31- support plates, knuckle to be processed 32-, 33- long risers, 34- the second V-type seats,
35- fulcrum bearings.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
Referring to Fig. 1, Fig. 2, Fig. 3 and a kind of gear milling clamper of knuckle end tooth shown in Fig. 4, including pedestal 1, feature
It is：One supporting member is the identical and parallel support plate 31 of two block structures, is located above the middle part of the pedestal 1；
One positioning column 10, left part are connected with a swivel nut 6, and the right end of the positioning column 10 is horizontally through two support
Two bushings 9 on plate and clearance fit, the positioning column can rotate in two bushings therewith；
One left tapered sleeve 7 coordinates on the left part of the positioning column 10, and is abutted with the swivel nut 6；
One right tapered sleeve 11 coordinates on the right part of the positioning column 10；
One is located by connecting on the left end stop member on the left part of the pedestal 1, by one on the wedge seat 2 and one of backward L-shaped
Wedge 4 of the end with handle 5 is formed, and the right side of the wedge seat is equipped with a vertical groove, and the left side of the wedge 4 can be perpendicular
It is slided up and down into groove；
One is located by connecting on the right side stop member on the right part of the pedestal 1, is fixed by a long cushion block 13 and by screw
Right side block 12 on it is formed；
It further includes a lateral V-arrangement type clamping device for being located by connecting on 1 forepart of pedestal and one and is located by connecting on the pedestal 1
The vertical V-arrangement type clamping device at rear portion.
It further includes both heights and adjusts supporting member, be respectively provided at the left and right sides of the supporting member, the both heights tune
Section supporting member is fixedly connected on the thread bush 3 above the pedestal 1 and the hexagonal supporting screw 8 of matched connection by one
And locking nut is formed.
The transverse direction V-arrangement type clamping device, including be fixedly connected on the pedestal 1 the first V-shape base 26, be located at it is described
Eyelet bolt 14 on first V-shape base left end, the forked standard 20 being located on the first V-shape base right end and washer 21, lower end pass through
One pin and the hinged inverted eyelet bolt 14 of the forked standard 20, further include a pressing plate 16, one end of the pressing plate 16 passes through one
Pin 15 and the upper end of the eyelet bolt 14 are hinged, the upper end of the other end of the pressing plate 16 and the inverted eyelet bolt 14
Portion coordinates, and the upper end mating connection for passing through second nut 19 and the inverted eyelet bolt 14 fastens；Described
The both sides of one V-shape base 26 are respectively equipped with a cushion block 17, and two cushion block 17 is fixed on the two of the first V-shape base by more screws 18
Side；The center line of first V-shape base and 10 center line of positioning column are in same level, and between two center lines
Angle is into 76 °.
The vertical V-arrangement clamping device, the long riser 33 being fixedly connected on the pedestal 1 are fixedly connected on long riser
Second V-type seat 34 of 33 tops middle part and right part, one end is fixedly connected on the fulcrum bearing 35 of long 33 top left part of riser, one end leads to
The supporting block with holes 25 that the second bolt 24 is connected on 35 other end of fulcrum bearing is crossed, is further included and the supporting block 25 with holes
The other end cooperation T shapes housing screw 28, with the T shapes housing screw 28 be connected V shaped slab 27, the V shaped slab 27 with
The second V-type seat 34 corresponds to.
It She You a lifting bolt 29 in the four corners of the pedestal 1；It is respectively set in the bottom surface left and right ends of the pedestal 1
There is a positioning key 30, and pass through screw and fix.
The wedge seat 2 is fixedly connected on by two pins 23 and four bolts 22 on the left part of the pedestal 1.
Left tapered sleeve 7, the right tapered sleeve 11 at 10 both ends of positioning column coordinate with knuckle 32 to be added, the positioning column 10
Left part is connected with swivel nut 6, and two tapered sleeves can be pressed in the taper hole of knuckle 32 to be added by adjusting the swivel nut.
The use step of this gear milling clamper is as follows：（Referring to Fig. 1, Fig. 2）
Left tapered sleeve 7, right tapered sleeve 11 are put into the taper hole of knuckle 32 to be processed by the first step；
Positioning column 10 with swivel nut 6 is from left to right sequentially passed through wedge seat 2, left tapered sleeve 7, two bushings 9, right tapered sleeve by second step
11；
Third walks, and tightens swivel nut 6, left tapered sleeve 7, right tapered sleeve 11 is made to be pressed in the taper hole of knuckle 32 to be processed；
Wedge 4 is inserted into the groove of wedge seat 2 by the 4th step, until knuckle 32 to be processed is contacted with right side block 12, no
Until energy is mobile；
5th step, tommyhead bolt 28 is tightened in adjustment makes V shaped slab 27 compress knuckle 32 to be processed；
6th step adjusts the first nut 3 and hexagonal bearing 8, aiding support knuckle to be added；
7th step, by the parameter request mill teeth of knuckle；
8th step backs out the second bolt 24, unloads supporting block 25 with holes, V shaped slab 27, tightens tommyhead bolt 28, while turn down first
Nut 3 and hexagonal bearing 8；
9th step, rotation fell in knuckle to be added to lateral V-arrangement clamping device, and put down pressing plate 16, tighten nut 19, make to treat
Knuckle is added to fix；
Tenth step, by knuckle parameter request mill teeth.
Claims (6)
1. a kind of gear milling clamper of knuckle end tooth, including pedestal（1）, it is characterized in that：
One supporting member is the identical and parallel support plate of two block structures（31）, it is located at the pedestal（1）Middle part above,
One positioning column（10）, left part and a swivel nut（6）It is connected, the positioning column（10）Right end be horizontally through it is described
Two bushings in two support plates（9）And clearance fit, the positioning column can rotate in two bushings therewith；
One left tapered sleeve（7）Cooperation is in the positioning column（10）Left part on, and with the swivel nut（6）It abuts；
One right tapered sleeve（11）Cooperation is in the positioning column（10）Right part on；
One is located by connecting on the pedestal（1）Left part on left end stop member, by one be in backward L-shaped wedge seat（2）With
One upper end carries handle（5）Wedge（4）It forms, the right side of the wedge seat is equipped with a vertical groove, the wedge（4）A left side
Side can slide up and down in vertical groove；
One is located by connecting on the pedestal（1）Right part on right side stop member, by a long cushion block（13）With pass through screw
The right side block being fixed thereon（12）It forms；
It further includes one and is located by connecting on the pedestal（1）The lateral V-arrangement type clamping device of forepart and one is located by connecting on the bottom
Seat（1）The vertical V-arrangement type clamping device at rear portion.
2. the gear milling clamper of knuckle end tooth according to claim 1, it is characterized in that：It further includes both heights and adjusts support structure
Part, is respectively provided at the left and right sides of the supporting member, and the both heights adjusting supporting member is fixedly connected on described by one
Pedestal（1）Thread bush above（3）With the hexagonal supporting screw of matched connection（8）And locking nut is formed.
3. the gear milling clamper of knuckle end tooth according to claim 1 or 2, it is characterized in that：The transverse direction V-arrangement type clamps dress
It puts, including being fixedly connected on the pedestal（1）On the first V-shape base（26）, the movable joint spiral shell that is located on the first V-shape base left end
Bolt（14）, forked standard on the first V-shape base right end（20）And washer（21）, lower end pass through one pin（15）With the forked standard
（20）Hinged inverted eyelet bolt（14）, further include a pressing plate（16）, the pressing plate（16）One end pass through one pin（15）
With the eyelet bolt（14）Upper end be hinged, the pressing plate（16）The other end and the inverted eyelet bolt（14）It is upper
End coordinates, and passes through second nut（19）With the inverted eyelet bolt（14）Upper end be connected fastening；
First V-shape base（26）Both sides be respectively equipped with a cushion block（17）, two cushion block（17）Pass through more screws（18）It is fixed
In the both sides of the first V-shape base；The center line of first V-shape base and the positioning column（10）Center line in same level,
And the angle between two center lines is into 76 °.
4. the gear milling clamper of knuckle end tooth according to claim 3, it is characterized in that：The vertical V-arrangement clamping device, Gu
Surely it is connected to the pedestal（1）On long riser（33）, be fixedly connected on long riser（33）Top middle part and the second V-type of right part
Seat（34）, one end be fixedly connected on long riser（33）The fulcrum bearing of top left part（35）, one end pass through the second bolt（24）Connection
In the fulcrum bearing（35）Supporting block with holes on the other end（25）, further include and the supporting block with holes（25）The other end coordinates
T shape housing screws（28）And the T shapes housing screw（28）The V shaped slab of mating connection（27）, the V shaped slab（27）With institute
State the second V-type seat（34）It is corresponding.
5. the gear milling clamper of knuckle end tooth according to claim 1 or 2, it is characterized in that：In the pedestal（1）Quadrangle
Portion is respectively equipped with a lifting bolt（29）；In the pedestal（1）Bottom surface left and right ends be respectively provided with a positioning key（30）, and pass through
Screw is fixed.
6. the gear milling clamper of knuckle end tooth according to claim 1 or 2, it is characterized in that：The wedge seat（2）Pass through two
Time pin（23）With four bolts（22）It is fixedly connected on the pedestal（1）Left part on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396914.4A CN108127198B (en) | 2017-12-21 | 2017-12-21 | A kind of gear milling clamper of knuckle end tooth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711396914.4A CN108127198B (en) | 2017-12-21 | 2017-12-21 | A kind of gear milling clamper of knuckle end tooth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108127198A true CN108127198A (en) | 2018-06-08 |
| CN108127198B CN108127198B (en) | 2019-07-23 |
Family
ID=62391775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711396914.4A Active CN108127198B (en) | 2017-12-21 | 2017-12-21 | A kind of gear milling clamper of knuckle end tooth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108127198B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941000A (en) * | 2020-06-28 | 2020-11-17 | 湖北三环锻造有限公司 | Steering knuckle rod part near-net forming process and forming clamp thereof |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100635197B1 (en) * | 2005-10-14 | 2006-10-16 | 한맥기연 주식회사 | Processing jig for machine center |
| CN2915356Y (en) * | 2006-06-14 | 2007-06-27 | 中国重型汽车集团有限公司 | Drill jig for automobile knuckle turning |
| KR20100137225A (en) * | 2009-06-22 | 2010-12-30 | ( 주 ) 화신 | Processing jig of axle beam for vehicle |
| CN201769074U (en) * | 2010-08-25 | 2011-03-23 | 柳州市志宝机械有限公司 | Steering knuckle boring clamp |
| CN102001002A (en) * | 2010-09-12 | 2011-04-06 | 王庆 | Fixture for machining knuckle backing pin hole |
| CN201960386U (en) * | 2011-03-31 | 2011-09-07 | 湖北汇科数控组合机电装备有限公司 | Clamp for processing knuckle post |
| CN201997968U (en) * | 2011-02-11 | 2011-10-05 | 衢州恒业汽车部件有限公司 | Fixture special for auxiliary process of knuckle |
| CN104029056A (en) * | 2014-05-29 | 2014-09-10 | 苏州卓诚钛设备有限公司 | Clamp for machining automobile steering knuckle |
| CN205057608U (en) * | 2015-10-15 | 2016-03-02 | 高邮市永发机械有限公司 | Special milling machine fixture of knuckle |
-
2017
- 2017-12-21 CN CN201711396914.4A patent/CN108127198B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100635197B1 (en) * | 2005-10-14 | 2006-10-16 | 한맥기연 주식회사 | Processing jig for machine center |
| CN2915356Y (en) * | 2006-06-14 | 2007-06-27 | 中国重型汽车集团有限公司 | Drill jig for automobile knuckle turning |
| KR20100137225A (en) * | 2009-06-22 | 2010-12-30 | ( 주 ) 화신 | Processing jig of axle beam for vehicle |
| CN201769074U (en) * | 2010-08-25 | 2011-03-23 | 柳州市志宝机械有限公司 | Steering knuckle boring clamp |
| CN102001002A (en) * | 2010-09-12 | 2011-04-06 | 王庆 | Fixture for machining knuckle backing pin hole |
| CN201997968U (en) * | 2011-02-11 | 2011-10-05 | 衢州恒业汽车部件有限公司 | Fixture special for auxiliary process of knuckle |
| CN201960386U (en) * | 2011-03-31 | 2011-09-07 | 湖北汇科数控组合机电装备有限公司 | Clamp for processing knuckle post |
| CN104029056A (en) * | 2014-05-29 | 2014-09-10 | 苏州卓诚钛设备有限公司 | Clamp for machining automobile steering knuckle |
| CN205057608U (en) * | 2015-10-15 | 2016-03-02 | 高邮市永发机械有限公司 | Special milling machine fixture of knuckle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941000A (en) * | 2020-06-28 | 2020-11-17 | 湖北三环锻造有限公司 | Steering knuckle rod part near-net forming process and forming clamp thereof |
| CN111941000B (en) * | 2020-06-28 | 2021-08-31 | 湖北三环锻造有限公司 | Steering knuckle rod part near-net forming process and forming clamp thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108127198B (en) | 2019-07-23 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190510 Address after: 401321 Fenghua Road, Yudong, Banan District, Chongqing, 901 Applicant after: Chongqing Dajiang Cheqiao Co., Ltd. Address before: 401321 Dajiang Industrial Park, Yudong Town, Banan District, Chongqing Applicant before: Chongqing Dajiang Industrial Co., Ltd. |
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