CN206998326U - A kind of positioning fixture for being used to process L-shaped pin - Google Patents
A kind of positioning fixture for being used to process L-shaped pin Download PDFInfo
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- CN206998326U CN206998326U CN201720769484.5U CN201720769484U CN206998326U CN 206998326 U CN206998326 U CN 206998326U CN 201720769484 U CN201720769484 U CN 201720769484U CN 206998326 U CN206998326 U CN 206998326U
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- positioning
- straight pin
- positioning seat
- clamping device
- shaped straight
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Abstract
It the utility model is related to a kind of positioning fixture for being used to process L-shaped pin, including positioning seat, clamping device, positioning seat upper end is provided with boss, boss upper surface is provided with positioning hole, positioning hole intersects with boss side surfaces, and one end of L-shaped straight pin is contained in positioning hole, and clamping device is installed on positioning seat, clamping device is pressed against the other end of L-shaped straight pin, L-shaped straight pin lateral surface is fitted in positioning hole medial surface；Use clamp for machining provided by the utility model, L-shaped straight pin is positioned by the positioning hole being arranged on positioning seat, clamping device makes L-shaped straight pin side fit in positioning hole medial surface, add the contact area between workpiece and fixture locating surface, avoid and weigh or scratch each surface of workpiece wounded, the clamp for machining clamping force is smaller, and can this clamping more than one piece L-shaped straight pin carry out batch machining, machining accuracy, crudy and production efficiency are improved, has the characteristics that simple in construction, cost is cheap, easy to operate.
Description
Technical field
Machining process equipment field is the utility model is related to, more particularly to a kind of positioning for being used to process L-shaped pin
Fixture.
Background technology
At present, with manufacturing development, in industrial circles such as Aeronautics and Astronautics, commonly used many peculiarly shaped zero
Part, one of which L-shaped straight pin, its technical requirement on design are provided with axle φ 2.54 ± 0.003 in its lower end, and upper end is provided with 2.55
× 4.95 U-typed boss, the parallelism error requirement between the upper surface and lower surface of the boss are less than 0.01 millimeter, the L
Shape straight pin requirement on machining accuracy is high, and clamping is difficult on lathe, and difficulty of processing is big, when being cut off in machine-shaping part, cut-out
Face is that boss upper surface can leave a small pylon, and when carrying out the processing of this end face, in the prior art, L-shaped as processing is justified
Pin typically carries out clamping using vice or copper sheathing, is then processed again；But because spare part outside measurement is smaller, L-shaped circle
Pin workpiece is difficult to be clamped；Want precision prescribed very high due to each finished surface of workpiece, when being clamped using vice, vice
Clamping force is difficult to control, and is easily weighed wounded, is scratched workpiece surface；And during using vice or copper sheathing clamping, processing can only every time
One workpiece of clamping, the depth of parallelism mismachining tolerance of part lower planes is difficult to ensure that after the completion of clamping, causes part crudy
Relatively low, production efficiency is low.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of positioning fixture for being used to process L-shaped pin.
The utility model provides a kind of positioning fixture for being used to process L-shaped pin, including positioning seat, clamping device, institute
State positioning seat upper end and be provided with boss, the boss upper surface is provided with positioning hole, and the positioning hole intersects with boss side surfaces, the folder
Tight device is installed on the positioning seat.
The positioning hole is blind hole.
The clamping device includes bolt, pressing plate, packing ring and nut, and the positioning seat is provided with through hole, pressing plate and packing ring
It is set on bolt and the positioning seat both sides that are placed in, bolt is connected through the through hole with nut.
The clamping device also includes stop screw, and the bolt is provided with stopper slot, stop screw and the positioning seat
It is connected through a screw thread and intersects with stopper slot.
The pressing plate is provided with the first pressure surface and the second pressure surface backwards to the packing ring side, and the first pressure surface is plane, and second presses
Face is arc surface.
The second pressure surface arc heights of roofs is less than first pressure surface height.
The bolt head lower surface is arc surface, and the packing ring is provided with the groove to match with the bolt.
The nut and the washer contacts face are arc surfaces, and the packing ring is provided with the groove to match with the nut.
The clamp for machining also includes bottom plate, and the positioning seat is installed on bottom plate upper surface, and bottom plate is connected with lathe.
The beneficial effects of the utility model are：
It is used to process the positioning fixture of L-shaped pin, including positioning seat, clamping device using provided by the utility model,
The positioning seat upper end is provided with boss, and the boss upper surface is provided with positioning hole, and the positioning hole intersects with boss side surfaces, described
One end of L-shaped straight pin is contained in the positioning hole, and the clamping device is installed on the positioning seat, the clamping device
The other end of the L-shaped straight pin is pressed against, the L-shaped straight pin lateral surface is fitted in the positioning hole medial surface；Use this
The clamp for machining that utility model provides, L-shaped straight pin are positioned by the positioning hole being arranged on positioning seat, are filled by clamping
Putting makes L-shaped straight pin side fit in positioning hole medial surface, adds the contact area between workpiece and fixture locating surface, avoids
Weigh or scratch each surface of workpiece wounded, it is smaller using the gripping means grips power, and can be according to being actually needed clamped one time more than one piece L
Shape straight pin, Batch Cutting is carried out, machining accuracy is higher after the completion of clamping workpiece, and crudy is improved, and is carried significantly
High production efficiency, the utility model have simple in construction, and cost is cheap, it is easy to operate the features such as, can be in Aeronautics and Astronautics machinery
Wide popularization and application in manufacture field.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of the utility model positioning seat；
Fig. 3 is the structural representation of the utility model pressing plate；
Fig. 4 is the structural representation of the utility model packing ring.
In figure：1- positioning seats, 2- clamping devices, 3-L shape straight pins, 4- bolts, 5- pressing plates, 6- packing rings, 7- nuts, 8- limits
Position screw, 9- bottom plates, 41- stopper slots, the pressure surfaces of 51- first, the pressure surfaces of 52- second, 61- grooves, 101- boss, 102- positioning holes,
103- boss side surfaces, 104- through holes.
Embodiment
The technical solution of the utility model is described further below in conjunction with accompanying drawing, but required protection domain is not
It is confined to described；
The utility model provides a kind of positioning fixture for being used to process L-shaped pin, as shown in Figure 1 and Figure 2, including positioning
Seat 1, clamping device 2, the upper end of positioning seat 1 are provided with boss 101, and the upper surface of boss 101 is provided with positioning hole 102, positioning hole 102 with it is convex
Platform side 103 is intersecting, and one end of L-shaped straight pin 3 is contained in positioning hole 102, and clamping device 2 is installed on positioning seat 1, clamps
Device 2 is pressed against the other end of L-shaped straight pin 3, the lateral surface of L-shaped straight pin 3 is fitted in the medial surface of positioning hole 102.Use this reality
With the clamp for machining of new offer, L-shaped straight pin is positioned by the positioning hole being arranged on positioning seat, passes through clamping device
L-shaped straight pin side is fitted in positioning hole medial surface, add the contact area between workpiece and fixture locating surface, avoid
Weigh or scratch each surface of workpiece wounded, it is smaller using the gripping means grips power, and can be according to being actually needed clamped one time more than one piece L-shaped
Straight pin, Batch Cutting is carried out, machining accuracy is higher after the completion of clamping workpiece, and crudy is improved, and is greatly improved
Production efficiency, the utility model have simple in construction, and cost is cheap, it is easy to operate the features such as, can in Aeronautics and Astronautics machinery plus
Wide popularization and application in work field.
Positioning hole 102 is blind hole.Using the technical solution of the utility model, preferred orientation hole 102 is blind hole, when by L-shaped
When straight pin is installed in positioning hole, positioning hole inner bottom surface is plane, and L-shaped straight pin is that face contacts with positioning hole inner bottom surface, is subtracted
The effect pressure that small clamping device is acted on L-shaped straight pin, avoids and weighs wounded, scratches each surface of workpiece.
The diameter of positioning hole 102 is more than the diameter of L-shaped straight pin 3.Use the technical solution of the utility model, preferred orientation hole
102 diameters are more than the diameter of L-shaped straight pin 3, and preferably diameter is only somewhat larger, when clamping L-shaped straight pin, L-shaped straight pin
Supporting surface is positioning hole medial surface i.e. arc surface, and preferably boss bottom surface is in same level, makes L-shaped straight pin and supporting surface
Between forming face contact, reduce the effect pressure that clamping device is acted on L-shaped straight pin, avoid and weigh wounded, scratch workpiece
Each surface, further, L-shaped straight pin supporting surface should determine that L-shaped straight pin is determined according to workpiece locating surface shape and size
Position hole number can be set it is multiple, according to produce reality situation determine.
As shown in figure 3, clamping device 2 includes bolt 4, pressing plate 5, packing ring 6 and nut 7, positioning seat 1 is provided with through hole 104,
Pressing plate 5 and packing ring 6 are set on bolt 4 and the both sides of positioning seat 1 that are placed in, bolt 4 are connected with nut 7 through the through hole 104, made
Pressing plate 5 flattens the end face of L-shaped straight pin 3.Using the technical solution of the utility model, preferably through hole 104 is arranged at boss bottom
Below face, vertical with boss side surfaces, when nut 7 is tightened, pressing plate 5 respectively clamps L-shaped straight pin from positioning seat both sides, should
Clamping device operating physical force is smaller, and clamping force is also smaller, avoids and weighs wounded, scratches workpiece surface, and can disposable clamping more than one piece L-shaped
Straight pin carries out batch machining, improves production efficiency.
Clamping device 2 also includes stop screw 8, and the screw rod of bolt 4 is provided with stopper slot 41, stop screw 8 and the spiral shell of positioning seat 1
Line is connected and intersected with stopper slot 41.Using the technical solution of the utility model, stop screw is preferably holding screw, positioning seat
Upper surface is provided with screwed hole, when when stop screw is screwed in screwed hole without tightening, bolt 4 is remained able to left and right sliding
It is dynamic, make the convenient disassembly of clamping device, when tightening stop screw, then limit horizontally slipping for bolt 4, make L-shaped straight pin
Clamping it is more reliable, positioning it is more accurate.
Pressing plate 5 contacts towards the side of positioning seat 1 provided with the first pressure surface 51 contacted with L-shaped straight pin 3 and with positioning seat 1
Second pressure surface 52, the first pressure surface 51 are planes, and the second pressure surface 52 is arc surface.Use the technical solution of the utility model, pressing plate
Compressing component end is plane, and the contact surface of pressing plate and positioning seat is arc surface, preferably the difference in height of the first pressure surface and the second pressure surface
Because length tolerance of the L-shaped straight pin part in this direction determines, for example, L-shaped straight pin part is in the upward chi of pressing plate shaft
Very little is 6 ± 0.1, then the difference in height that the first pressure surface and the second pressure surface can be set is 0.2 millimeter, when clamping L-shaped straight pin, due to
Difference in height existing for first pressure surface and the second pressure surface, ensure that between pressing plate and workpiece it is plane contact, it is ensured that be applied to workpiece
On thrust be uniformly distributed, it is ensured that workpiece upper surface is parallel with boss bottom surface, ensure that machining accuracy, improves processing matter
Amount.
The height of second pressure surface 52 is less than the height of the first pressure surface 51.Using the technical solution of the utility model, due to first
Difference in height existing for pressure surface and the second pressure surface, ensure that between pressing plate and workpiece it is plane contact, it is ensured that be applied on workpiece
Thrust is uniformly distributed, it is ensured that workpiece upper surface is parallel with boss bottom surface, ensure that machining accuracy, improves crudy.
As shown in figure 4, the head lower surface of bolt 4 is arc surface, packing ring 6 is provided with the groove 61 to match with bolt 4.Use
The technical solution of the utility model, make to be that face contacts between bolt head and pressing plate, reduce the pressure acted on workpiece, make work
It is uniformly distributed in strength on pressing plate, further, the head lower surface of bolt 4 is arc surface, and arc surface increases pressing plate and bolt
Contact area between head, further reduces the pressure acted on workpiece, and make bolt-center axis and through hole central shaft
Line coincides, and improves machining accuracy and crudy.
As shown in figure 4, nut 7 is arc surface with the contact surface of packing ring 6, packing ring 6 is provided with the groove 61 to match with nut 7.
Using the technical solution of the utility model, make to be that face contacts between nut and pressing plate, reduce the pressure acted on workpiece, make
Effect strength is uniformly distributed on pressing plate, and further, nut end face is arc surface, and arc surface is increased between pressing plate and bolt head
Contact area, further reduce the pressure acted on workpiece, and make bolt-center axis mutually overlapping with through hole central axis
Close, improve machining accuracy and crudy.
Clamp for machining also includes bottom plate 9, and positioning seat 1 is connected with the upper surface of bottom plate 9, and bottom plate 9 is adsorbed on lathe.Use this
The technical scheme of utility model, preferably positioning seat and bottom plate are connected as one using fastener, preferably added using grinding machine
Work, bottom plate is adsorbable on platen, can also set the connection with platen accordingly on bottom plate as needed
Structure, the fixture have simple in construction, and cost is cheap, it is easy to operate the features such as, can be wide in Aeronautics and Astronautics field of machining
General popularization and application.
When further, using clamp for machining provided by the utility model, it can be carried out according to the appearance and size of L-shaped straight pin
Classification, then will carry out batch machining, when unloading L-shaped straight pin workpiece, it is only necessary to unclamp spiral shell after L-shaped straight pin batch clamping
Mother, the instruments such as tweezers can be used to take out workpiece.
Claims (8)
- A kind of 1. positioning fixture for being used to process L-shaped pin, it is characterised in that：It is described including positioning seat (1), clamping device (2) Positioning seat (1) upper end is provided with boss (101), and boss (101) upper surface is provided with positioning hole (102), the positioning hole (102) Intersect with boss side surfaces (103), the clamping device (2) is installed on the positioning seat (1), and the clamping device (2) includes Bolt (4), pressing plate (5), packing ring (6) and nut (7), the positioning seat (1) are provided with through hole (104), pressing plate (5) and packing ring (6) it is set on bolt (4) and the positioning seat (1) both sides that are placed in, bolt (4) connects through the through hole (104) and nut (7) Connect.
- A kind of 2. positioning fixture for being used to process L-shaped pin as claimed in claim 1, it is characterised in that：The positioning hole (102) it is blind hole.
- A kind of 3. positioning fixture for being used to process L-shaped pin as claimed in claim 1, it is characterised in that：The clamping device (2) stop screw (8) is also included, the bolt (4) is provided with stopper slot (41), and stop screw (8) is logical with the positioning seat (1) Cross and be threadedly coupled and intersect with stopper slot (41).
- A kind of 4. positioning fixture for being used to process L-shaped pin as claimed in claim 1, it is characterised in that：Pressing plate (5) back of the body The first pressure surface (51) and the second pressure surface (52) are provided with to the packing ring (6) side, and the first pressure surface (51) is plane, the second pressure surface (52) it is arc surface.
- A kind of 5. positioning fixture for being used to process L-shaped pin as claimed in claim 4, it is characterised in that：Second pressure surface (52) arc heights of roofs is less than first pressure surface (51) height.
- A kind of 6. positioning fixture for being used to process L-shaped pin as claimed in claim 1, it is characterised in that：Bolt (4) head Subordinate end face is arc surface, and the packing ring (6) is provided with the groove (61) to match with the bolt (4).
- A kind of 7. positioning fixture for being used to process L-shaped pin as claimed in claim 1, it is characterised in that：The nut (7) with Packing ring (6) contact surface is arc surface, and the packing ring (6) is provided with the groove (61) to match with the nut (7).
- A kind of 8. positioning fixture for being used to process L-shaped pin as claimed in claim 1, it is characterised in that：It is described to be used to process L The positioning fixture of shape pin also includes bottom plate (9), and the positioning seat (1) is installed on bottom plate (9) upper surface, bottom plate (9) and lathe Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720769484.5U CN206998326U (en) | 2017-06-28 | 2017-06-28 | A kind of positioning fixture for being used to process L-shaped pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720769484.5U CN206998326U (en) | 2017-06-28 | 2017-06-28 | A kind of positioning fixture for being used to process L-shaped pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206998326U true CN206998326U (en) | 2018-02-13 |
Family
ID=61448820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720769484.5U Active CN206998326U (en) | 2017-06-28 | 2017-06-28 | A kind of positioning fixture for being used to process L-shaped pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206998326U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160201A (en) * | 2017-06-28 | 2017-09-15 | 贵州黎阳国际制造有限公司 | A kind of clamp for machining of L-shaped straight pin |
| CN109332510A (en) * | 2018-11-29 | 2019-02-15 | 中国航空工业标准件制造有限责任公司 | The positioning tool that R extrusion is strengthened under bolt head |
-
2017
- 2017-06-28 CN CN201720769484.5U patent/CN206998326U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107160201A (en) * | 2017-06-28 | 2017-09-15 | 贵州黎阳国际制造有限公司 | A kind of clamp for machining of L-shaped straight pin |
| CN109332510A (en) * | 2018-11-29 | 2019-02-15 | 中国航空工业标准件制造有限责任公司 | The positioning tool that R extrusion is strengthened under bolt head |
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