CN208391509U - Zero-point positioning fixture - Google Patents
Zero-point positioning fixture Download PDFInfo
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- CN208391509U CN208391509U CN201820900304.7U CN201820900304U CN208391509U CN 208391509 U CN208391509 U CN 208391509U CN 201820900304 U CN201820900304 U CN 201820900304U CN 208391509 U CN208391509 U CN 208391509U
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- body frame
- main body
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- pin
- backing pin
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Abstract
The utility model discloses a kind of zero-point positioning fixtures, are made of main body frame, rear cover, piston, positioning head, movable backing pin and roller pin；Main body frame bottom is connect with rear cover, and center taper hole, the first mounting hole to match with positioning head is equipped at the top of main body frame, and the through-hole of placement activity backing pin is symmetrically arranged in main body frame, the cavity for placing piston is additionally provided in main body frame；Piston base is connect with rear cover by spring, and top land is symmetrically arranged with by roller pin and active catch pin connection, top land and the matched third groove of movable backing pin, is symmetrically arranged with the 4th groove on third groove inner wall, roller pin is set in the 4th groove；Positioning head all has the annular groove of taper equipped with upper surface, lower end surface；Movable backing pin is equipped with the second boss to match with annular groove upper surface and lower end surface taper close to the one side of positioning head.The utility model is easy to operate, and positioning accuracy is high, and stability in use is high, can meet the zero-point positioning of different dimension workpieces.
Description
Technical field
The utility model relates to technical field of mechanical processing more particularly to a kind of zero-point positioning fixtures.
Background technique
With the continuous development of Computerized Numerical Control processing technology, conventionally employed disassembly, clamping, a series of processes replacement such as play table positioning
The mode of workpiece, process is many and diverse, and processing non-cutting time is long, and lathe service efficiency is low.Workpiece is replaced in process in order to reduce
With secondary process time of frock clamp and realize automation, a kind of zero-point positioning grasping system of foreign study can be effective
The quick-replaceable clamping for solving workpiece, no longer needs to confirm the zero point of workpiece.But current zero point magic chuck is universal
The defects of it is low that there are positioning accuracies, and stability in use is poor, occupied space size is big cannot meet the requirements higher occasion and use.
Utility model content
The purpose of the utility model is to overcome above-mentioned deficiencies, provide a kind of zero-point positioning fixture, easy to operate, positioning accurate
Degree is high, and stability in use is high, can meet the zero-point positioning of different dimension workpieces, at low cost.
To achieve the above object, the utility model proposes following technical solutions:
A kind of zero-point positioning fixture is made of main body frame, rear cover, piston, positioning head, movable backing pin and roller pin；
The main body frame bottom is connect with rear cover, and the center cone to match with positioning head is equipped at the top of the main body frame
Hole, the main body frame top are additionally provided with the first mounting hole, the through-hole of placement activity backing pin are symmetrically arranged in the main body frame,
The cavity for placing piston is additionally provided in the main body frame, the piston side wall and cavity inner sidewall seal, with cavity upper wall, under
Be respectively formed upper atmospheric pressure cavity, lower atmospheric pressure cavity there are gap between wall, the main body frame side be equipped with connection external gas source with
First venthole of upper atmospheric pressure cavity, the main body frame other side are equipped with the second ventilation of connection external gas source and lower atmospheric pressure cavity
Hole；
The piston base is connect with rear cover by spring, and the piston base is equipped with the first groove for placing spring, institute
It states and is equipped with first boss at the top of rear cover, the first boss is equipped with the second groove with the first matching grooves；The piston top
By roller pin and active catch pin connection, the top land is symmetrically arranged with and the matched third groove of movable backing pin, institute in portion
It states and is symmetrically arranged with the 4th groove on third groove and the inner wall of movable backing pin parallel direction, the roller pin is set to the 4th groove
It is interior；
The positioning head longitudinal direction all has the annular groove of taper equipped with upper surface, lower end surface；The activity backing pin leans on
The one side of nearly positioning head is equipped with the second boss to match with annular groove upper surface and lower end surface taper, the activity backing pin bottom
Equipped with the 5th groove with roller pin connection, the 5th slot opening end is with movable backing pin at a distance from the one side of positioning head
Less than the 5th groove closed end with movable backing pin at a distance from the one side of positioning head.
Further, it is equipped with installation convex block below the center taper hole, covers to be equipped with after described and matches with installation convex block
The second mounting hole, the rear cover by bolt pass through the second mounting hole with installation convex block connect, the bolt and second install
Sealing ring is additionally provided between hole, so that main body frame and rear cover are tightly connected.
Further, the main body frame bottom is equipped with the matched circular connector of first boss covered with after, described
Circular connector inner diameter is equal to first boss outer diameter, and being additionally provided with sealing ring between the circular connector and rear cover makes
It obtains main body frame and rear cover is tightly connected.
Further, first mounting hole is equipped with 6.
Compared with prior art, the utility model has the beneficial effects that: the utility model is clamped using non-roller ball form,
Using the lateral pressure of movable backing pin and inclined-plane, generate self-locking, wherein the spring being equipped in piston can generate the compression of 300N
Power.If it is bigger to process part size, 300N pressing force is insufficient to allow positioning head to complete Automatic-clamping positioning, then staff can
It is ventilated by direction, provides at least one times or more of pressing force to guarantee to process zero point stability in use height；Secondly, this is practical new
Type, which is used, carries out high accuracy positioning with the positioning inclined-plane of Morse's taper same principle, and concentricity is high, and can be carried out automatic positioning, only
It need to be put into the taper hole of center, positioning can be realized in the process of stepping up.
Detailed description of the invention
Fig. 1 is the decomposition texture schematic diagram of the utility model.
Schematic diagram of internal structure when Fig. 2 is the locking of the utility model.
Fig. 3 is the schematic enlarged-scale view of the movable backing pin in the utility model.
Fig. 4 is the schematic enlarged-scale view of the positioning head in the utility model.
Each label is as follows with component names corresponding relationship:
1, main body frame；2, rear cover；3, piston；4, positioning head；5, movable backing pin；6, roller pin；7, center taper hole；8,
One mounting hole；9, upper atmospheric pressure cavity；10, lower atmospheric pressure cavity；11, the first venthole；12, the second venthole；13, spring；14, first
Groove；15, first boss；16, the second groove；17, third groove；18, the 4th groove；19, annular groove；1901, annular is recessed
Slot upper surface taper；1902, annular groove lower end surface taper；20, second boss；2001, taper in second boss；2002,
Taper under two boss；21, the 5th groove；22, convex block is installed；23, the second mounting hole；24, circular connector；25, bolt.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Embodiment
As shown in Figure 1, a kind of zero-point positioning fixture, by main body frame 1, rear cover 2, piston 3, positioning head 4, movable backing pin 5
And roller pin 6 forms；The main body frame bottom 1 is connect with rear cover 2, is equipped with and positioning head 4 at the top of the main body frame 1
The center taper hole 7 to match is additionally provided with the first mounting hole 8 at the top of the main body frame 1, is symmetrically arranged in the main body frame 1
The through-hole of placement activity backing pin, is additionally provided with the cavity for placing piston in the main body frame 1, in 3 side wall of piston and cavity
Side wall sealing, there are gaps to be respectively formed upper atmospheric pressure cavity 9, lower atmospheric pressure cavity 10, the body frame between cavity upper wall, lower wall
1 side of frame is equipped with the first venthole 11 of connection external gas source and upper atmospheric pressure cavity 9, and 1 other side of main body frame is equipped with connection
Second venthole 12 of external gas source and lower atmospheric pressure cavity 10；Wherein, the first mounting hole 8 is equipped with 6.
As shown in Figure 1,3 bottom of piston is connect with rear cover 2 by spring 13,1 bottom of piston, which is equipped with, places bullet
First groove 14 of spring 13 is equipped with first boss 15 at the top of the rear cover 2, and the first boss 15 is equipped with and the first groove
14 matched second grooves 16；It is connect by roller pin 6 with movable backing pin 5 at the top of the piston 1,1 top of piston is symmetrical
Be provided with the movable matched third groove 17 of backing pin 5, the third groove 17 with it is right on the inner wall of activity 5 parallel direction of backing pin
Claim to be equipped with the 4th groove 18, the roller pin 6 is set to 18 in the 4th groove；
As shown in Figure 3, Figure 4,4 longitudinal direction of positioning head is equipped with upper surface, lower end surface all has the annular groove of taper
19；The activity backing pin 5 is equipped with and 19 upper surface taper 1901 of annular groove and lower end surface taper close to the one side of positioning head 4
1902 second boss 20 to match, activity 5 bottom of backing pin are equipped with the 5th groove 21 that connect with roller pin 6, and described the
Five grooves, 21 open end is less than 21 closed end of the 5th groove and work with movable backing pin 5 at a distance from the one side of positioning head 4
Distance of the dynamic backing pin 5 close to the one side of positioning head 4.
As shown in Figure 1, being equipped with installation convex block 22 below the center taper hole 7, the rear cover 2 is equipped with and installation convex block 22
The second mounting hole 23 to match, the rear cover 2 pass through the second mounting hole 23 by bolt and connect with installation convex block 22, the spiral shell
Sealing ring is additionally provided between bolt and the second mounting hole 23.
As shown in Figure 1,1 bottom of main body frame is equipped with and the matched circular connector of first boss 15 on rear cover 2
24,24 inner diameter of circular connector is equal to 15 outer diameter of first boss, between the circular connector 24 and rear cover 2
It is additionally provided with sealing ring.
Working principle: under the limitation of main body frame 1, movable backing pin 5 can only move toward one another along the x axis；Replace workpiece
When, it is ventilated first by the upward atmospheric pressure cavity 9 of the first venthole 11 on main body frame 1, compressed spring 13 moves down piston 3, living
Plug 3 drives roller pin 6, the 5th groove 21 on 6 drive activity backing pin 5 of roller pin, so that two symmetrical movable backing pins 5
Clamped position is decontroled in relative motion, and positioning head 4 passes through；Replacement finishes, gas when needing to clamp workpiece, in extraction in atmospheric pressure cavity 10
Body, 13 power of spring are returned just, and piston 3 moves up, and piston 3 drives roller pin 6, the 5th groove 21 on 6 drive activity backing pin 5 of roller pin
So that two symmetrical movable backing pins 5 move toward one another, pass through the taper and positioning head in the second boss 20 on movable backing pin 5
The taper fit of annular groove 19 upper surface and lower end surface on 4, so that positioning head clamping and being automatically positioned.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (4)
1. a kind of zero-point positioning fixture, which is characterized in that by main body frame, rear cover, piston, positioning head, movable backing pin and rolling
Sub- pin bank at；
The main body frame bottom is connect with rear cover, and the center taper hole to match with positioning head is equipped at the top of the main body frame,
It is additionally provided with the first mounting hole at the top of the main body frame, the through-hole of placement activity backing pin, institute are symmetrically arranged in the main body frame
The cavity for being additionally provided in main body frame and placing piston is stated, the piston side wall and cavity inner sidewall seal, with cavity upper wall, lower wall
Between be respectively formed upper atmospheric pressure cavity, lower atmospheric pressure cavity there are gap, the main body frame side be equipped with connection external gas source with it is upper
First venthole of atmospheric pressure cavity, the main body frame other side are equipped with the second venthole of connection external gas source and lower atmospheric pressure cavity；
The piston base is connect with rear cover by spring, and the piston base is equipped with the first groove for placing spring, after described
Tops are equipped with first boss, and the first boss is equipped with the second groove with the first matching grooves；The top land is logical
Cross roller pin and active catch pin connection, the top land be symmetrically arranged with the matched third groove of movable backing pin, described the
It is symmetrically arranged with the 4th groove on three grooves and the inner wall of movable backing pin parallel direction, the roller pin is set in the 4th groove；
The positioning head longitudinal direction all has the annular groove of taper equipped with upper surface, lower end surface；The activity backing pin is close to fixed
The one side of potential head is equipped with the second boss to match with annular groove upper surface and lower end surface taper, and the activity backing pin bottom is equipped with
With the 5th groove of roller pin connection, the 5th slot opening end is less than at a distance from the one side of positioning head with movable backing pin
The 5th groove closed end is with movable backing pin at a distance from the one side of positioning head.
2. zero-point positioning fixture as described in claim 1, which is characterized in that installation convex block is equipped with below the center taper hole,
The second mounting hole for being equipped with and matching with installation convex block is covered after described, the rear cover passes through the second mounting hole and peace by bolt
Convex block connection is filled, is additionally provided with sealing ring between the bolt and the second mounting hole.
3. zero-point positioning fixture as claimed in claim 2, which is characterized in that the main body frame bottom is equipped with and covers with after
The matched circular connector of first boss, the circular connector inner diameter are equal to first boss outer diameter, the annular
Sealing ring is additionally provided between connector and rear cover.
4. zero-point positioning fixture as described in claim 1, which is characterized in that first mounting hole is equipped with 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900304.7U CN208391509U (en) | 2018-06-11 | 2018-06-11 | Zero-point positioning fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820900304.7U CN208391509U (en) | 2018-06-11 | 2018-06-11 | Zero-point positioning fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208391509U true CN208391509U (en) | 2019-01-18 |
Family
ID=65134100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820900304.7U Expired - Fee Related CN208391509U (en) | 2018-06-11 | 2018-06-11 | Zero-point positioning fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208391509U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623429A (en) * | 2019-02-14 | 2019-04-16 | 上海卢宏精密机械有限公司 | A kind of universal fixturing meeting automatic production line |
| CN111318767A (en) * | 2020-04-16 | 2020-06-23 | 无锡贝斯特精机股份有限公司 | Tool of robot deburring workstation and calibration method thereof |
| CN113334067A (en) * | 2021-05-28 | 2021-09-03 | 大连理工大学 | A loading attachment for small frame subassembly automatic assembly |
-
2018
- 2018-06-11 CN CN201820900304.7U patent/CN208391509U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109623429A (en) * | 2019-02-14 | 2019-04-16 | 上海卢宏精密机械有限公司 | A kind of universal fixturing meeting automatic production line |
| CN111318767A (en) * | 2020-04-16 | 2020-06-23 | 无锡贝斯特精机股份有限公司 | Tool of robot deburring workstation and calibration method thereof |
| CN113334067A (en) * | 2021-05-28 | 2021-09-03 | 大连理工大学 | A loading attachment for small frame subassembly automatic assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190118 Termination date: 20210611 |