CN207139350U - A kind of oblique pull inner bearing type piston special fixture - Google Patents
A kind of oblique pull inner bearing type piston special fixture Download PDFInfo
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- CN207139350U CN207139350U CN201721224025.5U CN201721224025U CN207139350U CN 207139350 U CN207139350 U CN 207139350U CN 201721224025 U CN201721224025 U CN 201721224025U CN 207139350 U CN207139350 U CN 207139350U
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Abstract
It the utility model is related to a kind of oblique pull inner bearing type piston special fixture, including base, the base includes cup dolly and the trapezoidal base above cup dolly, the trapezoidal base is monosymmetric to be provided with locating piece, the locating piece is fixed on cup dolly, the base has the through hole run through up and down, there is pull bar inside the through hole, there is engaging groove on described two prisms of trapezoidal base, lower drawing block is equipped with the engaging groove, the pull bar, all there is pin-and-hole on lower drawing block and trapezoidal base, running through in pin-and-hole has drawing to sell, piston special fixture of the present utility model, the processing of piston-top surface and external peripheral surface can be directly realized by, simplify manufacturing procedure, with the problem of can eliminating Wall-Thickness Difference, reduce the process of subsequent detection Wall-Thickness Difference, so as to reduce manpower, the input of resource and equipment.
Description
Technical field
It the utility model is related to mechanical clamping tool technical field, and in particular to a kind of oblique pull inner bearing type piston exclusive clamps
Tool.
Background technology
" heart " of the piston as engine, it is typical parts during automobile production among automobile engine,
There is very strong and typical process characteristic in terms of machining.Piston operationally bears the mechanical load of alternation while also held
Affected by hot loading, it is one of parts that condition of work is worst in engine, therefore piston is also to influence engine performance index
One of parts.At present, state's inner carrier manufacturing is typically to form production line by universal machine tools combination special piston lathe, because
This, just as the equipment of most critical in piston machining, its precision and performance will directly affect for special equipment and special tooling
The performance and index of shaped article.
In existing Piston Machining flow, the first procedure is usually using cylindrical black skin as the rough turn skirt end of positioning datum
Seam, then second operation work is rough turn cylindrical with the positioning of skirt end seam, thus needs two procedures to complete cylindrical processing, and
And top surface processing can't be completed.Such processing mode casts deviation and precision problem, blank because blank is existing in itself
Uniformity be not easily controlled, for example outer round surface roughness is larger etc., when using outer round surface as positioning datum, can cause plus
Be present Wall-Thickness Difference, it is necessary to increase the process of detection during following process in the piston of work, so result in Piston Machining mistake
Process, equipment and human resources etc. are added in journey.
Utility model content
In order to overcome above-mentioned technological deficiency, the utility model provides a kind of oblique pull inner bearing type piston special fixture, to work
The inner surface of plug carries out clamping, positioning, the problem of eliminating Wall-Thickness Difference, while reduces the process of subsequent detection Wall-Thickness Difference, subtracts
The input of manpower, resource and equipment is lacked, to achieve these goals, the utility model adopts the following technical scheme that：
A kind of oblique pull inner bearing type piston special fixture, including base, the base include cup dolly and positioned at circular bases
The trapezoidal base of seat top, the trapezoidal base is monosymmetric to be provided with locating piece, and the locating piece is fixed on cup dolly
On, the base has the through hole run through up and down, has pull bar inside the through hole, has on described trapezoidal two prisms of base
There is engaging groove, lower drawing block is equipped with the engaging groove, all there is pin-and-hole, pin-and-hole on the pull bar, lower drawing block and trapezoidal base
In through have drawing sell, draw sell in the presence of, lower drawing block can move up and down with pull bar.
Further, the lower drawing block includes movable block and support block, and the movable block connects with support block integral type, moves
There is pin-and-hole, support block width, thickness are more than width, the thickness of movable block on motion block.
Further, the size of pin-and-hole is with drawing pin size to match on the pull bar and lower drawing block, the trapezoidal heel pin
Hole size is more than pull bar, lower drawing block pin-and-hole size, and more than pin cross sectional dimensions is drawn, draws pin to be done in the pin-and-hole of trapezoidal base
Move up and down.
Further, it is 20 ° that described two prisms of trapezoidal base are angled with holder axis, i.e. engaging groove and fixture
Angled axis institute is 20 °.
Further, the pull bar includes the first shaft part and the second shaft part, first shaft part and the second shaft part integral type
Connection, second shaft section diameter are more than the first shaft section diameter, on the circumferential side surface of first shaft part, provided with being sold with drawing
The drawing pin-and-hole matched somebody with somebody, the circumferential side surface of second shaft part are provided with round key, and the end of second shaft part is provided with spline.
Further, the bulge-structure to match with piston seam shape is provided with the locating piece, locating piece passes through
It is bolted on cup dolly.
The beneficial effects of the utility model：
Oblique pull inner bearing type piston special fixture of the present utility model, is used in a manner of being positioned by piston inner wall surface,
The processing of piston-top surface and external peripheral surface can be directly realized by, simplifies manufacturing procedure, same the problem of can eliminating Wall-Thickness Difference,
Reduce the process of subsequent detection Wall-Thickness Difference, so as to reduce manpower, resource and the input of equipment.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the restriction to the application.
Fig. 1 is the utility model piston special fixture overall structure diagram；
Fig. 2 is the utility model drawbar structure diagram；
Wherein：1. cup dolly, 2. trapezoidal bases, 3. locating pieces, 4. pull bars, 41. first shaft parts, 42. second shaft parts,
43. round key, 44. splines, 5. engaging grooves, 6. movable blocks, 7. support blocks, 8. draw pin, 9. bulge-structures, 10. bolts.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, during existing Piston Machining, complex procedures are, it is necessary in following process process
The process of middle increase detection, so results in and process, equipment and human resources is added during Piston Machining, for above-mentioned
Problem, present applicant proposes a kind of oblique pull inner bearing type piston special fixture.
In a kind of exemplary embodiment of the application, as shown in Figure 1-2, a kind of oblique pull inner bearing type piston special fixture, bag
Base is included, the base includes cup dolly 1 and the trapezoidal base 2 above cup dolly, the trapezoidal base both sides pair
What is claimed is provided with locating piece 3, and the locating piece is fixed on cup dolly 1, and the base has the through hole run through up and down, described
There is pull bar 4 inside through hole, there is engaging groove 5 on described trapezoidal two prisms of base, drop-down is equipped with the engaging groove
Block, all has pin-and-hole 13 on the pull bar, lower drawing block and trapezoidal base, and pin 8 is drawn through having in pin-and-hole, in the presence of drawing and selling,
Lower drawing block can move up and down with pull bar.
The lower drawing block includes movable block 6 and support block 7, and the movable block connects with support block integral type, on movable block
With pin-and-hole, support block width w1, thickness h 1 are more than the width w2 of movable block, thickness h 2, and lower drawing block adopts the structure setting,
Distance of two lower drawing blocks between radial direction can effectively be increased, when lower drawing block moves down certain distance so as to protect
Demonstrate,prove the support to piston inner wall surface.
With drawing pin size to match, the trapezoidal heel pin hole size is more than the size of pin-and-hole on the pull bar and lower drawing block
Pull bar, lower drawing block pin-and-hole size, and more than pin diameter is drawn, draw pin to be moved up and down in the pin-and-hole of trapezoidal base, and then band
Dynamic lower drawing block moves along engaging groove.
It is 20 ° that described two prisms of trapezoidal base are angled with holder axis, i.e., engaging groove is in holder axis
Angle is 20 °.When lower drawing block moves downward along engaging groove, distance increases between two lower drawing blocks, can support piston inner wall.
The pull bar includes the first shaft part 41 and the second shaft part 42, first shaft part and the connection of the second shaft part integral type,
Second shaft section diameter is more than the first shaft section diameter, on the circumferential side surface of first shaft part, provided with what is matched with drawing pin
Pin-and-hole 13, the circumferential side surface of second shaft part are provided with round key 43, and the end of second shaft part is provided with spline 44, adopted
With round key and spline, it can effectively prevent pull bar with respect to base rotation.
The bulge-structure 9 to match with piston seam shape is provided with the locating piece, locating piece is solid by bolt 10
It is scheduled on cup dolly.Piston seam part can be in close contact with locating piece, and realization accurately positions.
Piston special fixture of the present utility model is in use, base is positioned on the chuck of platen, and is used
Chuck is clamped, and one end that pull bar has spline is connected by specific cylindrical key groove with machine tool chief axis.Above-mentioned spline
Into after keyway, keyway blocks spline after rotating to an angle, and makes to be mutually disengaged during its drop-down.Above-mentioned cylindrical keys
Groove is connected by bolt with main shaft.Main shaft can move up and down relative to chuck, therefore pull bar can be driven to move up and down,
Piston seam part and locating piece are in close contact, now, it is locking state that piston, which is in, when pulling downward on pull bar, pull bar
Drive and draw pin and lower drawing block integrally to move downward, because lower drawing block is engaged with the engaging groove of trapezoidal base, and engaging groove
It is in 20 ° of angles with holder axis, therefore lower drawing block does downward inclined-plane along engaging groove and moved, the distance between two lower drawing blocks increase
Greatly, when pull bar moves downward certain distance, lower drawing block will contact piston inner wall surface, and tightly support piston inwall table
Face, now, piston are locked, when turning, piston by lathe tool from power perpendicular to outside piston surface when, piston
Inner wall surface is tightly propped up, and will not be moved, meanwhile, support force can be completely counterbalanced by from cutter along piston radial
Power, the problem of Wall-Thickness Difference can be eliminated, reduce the process of subsequent detection Wall-Thickness Difference.Using such a installation way, it is possible to achieve
The processing of outside piston perimeter surface and top surface, the three process in existing Piston Machining technology a procedure is simplified to, letter
Processing technology is changed.
It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (6)
1. a kind of oblique pull inner bearing type piston special fixture, it is characterised in that including base, the base includes cup dolly and position
Trapezoidal base above cup dolly, the trapezoidal base is monosymmetric to be provided with locating piece, and the locating piece is fixed on
On cup dolly, the base has the through hole run through up and down, has pull bar inside the through hole, the trapezoidal base two is tiltedly
There is engaging groove on side, lower drawing block is equipped with the engaging groove, all there is pin on the pull bar, lower drawing block and trapezoidal base
Hole, through there is drawing to sell in pin-and-hole.
2. a kind of oblique pull inner bearing type piston special fixture as claimed in claim 1, it is characterised in that the lower drawing block includes moving
Motion block and support block, the movable block connect with support block integral type, have pin-and-hole on movable block, support block width, thickness are big
Width, thickness in movable block.
3. a kind of oblique pull inner bearing type piston special fixture as claimed in claim 1, it is characterised in that the pull bar and lower drawing block
For the size of upper pin-and-hole with drawing pin size to match, the trapezoidal heel pin hole size is more than pull bar, lower drawing block pin-and-hole size, and greatly
Cross sectional dimensions is sold in drawing.
A kind of 4. oblique pull inner bearing type piston special fixture as claimed in claim 1, it is characterised in that the trapezoidal base two
It is 20 ° that prism is angled with holder axis institute, i.e., it is 20 ° that engaging groove is angled with holder axis.
5. a kind of oblique pull inner bearing type piston special fixture as claimed in claim 1, it is characterised in that the pull bar includes first
Shaft part and the second shaft part, first shaft part and the connection of the second shaft part integral type, second shaft section diameter are more than the first shaft part
Diameter, on the circumferential side surface of first shaft part, provided with the drawing pin-and-hole with drawing pin to match, the circumference table of second shaft part
Face is provided with round key, and the end of second shaft part is provided with spline.
6. a kind of oblique pull inner bearing type piston special fixture as claimed in claim 1, it is characterised in that set on the locating piece
There is the bulge-structure to match with piston seam shape, locating piece is bolted on cup dolly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721224025.5U CN207139350U (en) | 2017-09-22 | 2017-09-22 | A kind of oblique pull inner bearing type piston special fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721224025.5U CN207139350U (en) | 2017-09-22 | 2017-09-22 | A kind of oblique pull inner bearing type piston special fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207139350U true CN207139350U (en) | 2018-03-27 |
Family
ID=61668482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721224025.5U Active CN207139350U (en) | 2017-09-22 | 2017-09-22 | A kind of oblique pull inner bearing type piston special fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207139350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734287A (en) * | 2022-05-12 | 2022-07-12 | 威海天润机械科技有限公司 | Piston pin hole processing tool and processing equipment |
-
2017
- 2017-09-22 CN CN201721224025.5U patent/CN207139350U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114734287A (en) * | 2022-05-12 | 2022-07-12 | 威海天润机械科技有限公司 | Piston pin hole processing tool and processing equipment |
| CN114734287B (en) * | 2022-05-12 | 2023-03-07 | 威海天润机械科技有限公司 | Piston pin hole processing tool and processing equipment |
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