CN106002396B - Fixture and its detent mechanism - Google Patents
Fixture and its detent mechanism Download PDFInfo
- Publication number
- CN106002396B CN106002396B CN201610404275.0A CN201610404275A CN106002396B CN 106002396 B CN106002396 B CN 106002396B CN 201610404275 A CN201610404275 A CN 201610404275A CN 106002396 B CN106002396 B CN 106002396B
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- Prior art keywords
- positioning column
- positioning
- detent mechanism
- spring
- plate
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Classifications
-
- 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
- B23Q3/08—Work-clamping means other than mechanically-actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/04—Work clamping means using fluid means or a vacuum
Abstract
The present invention relates to a kind of fixture and its detent mechanisms, fixture further includes pedestal, first cylinder, second cylinder, air inlet pipe and escape pipe, detent mechanism includes locating bodies, first spring, first positioning column and the second positioning column, locating slot is offered on locating bodies, first spring pocket is set on the first positioning column, when workpiece is placed on the positioning plate of fixture, the other end of the second positioning column is arranged in by the location hole of workpiece, since the diameter of the other end of the second positioning column is gradually reduced along the direction far from the first positioning column, therefore various different size of location holes be can adapt to, to improve the suitability of detent mechanism, improve the matching degree of detent mechanism and location hole.The side wall of the location hole of workpiece and the outer peripheral edge of the second positioning column offset, when pressing plate applies pressure to workpiece, the second positioning column of workpiece pair presses, and then oppresses the first spring, make the first spring-compressed, and then reduces the distance between the positioning surface of workpiece and positioning plate.
Description
Technical field
The present invention relates to numerically-controlled machine tool auxiliary Tools Technologies, more particularly to a kind of fixture and its detent mechanism.
Background technology
Using numerically-controlled machine tool (CNC, Computer number control) processing electronic product (such as mobile phone, tablet electricity
Brain etc.) shell or center when, it will usually use fixture, it would be desirable to which then the clamping workpiece of processing recycles number on fixture
The cutter of control lathe is processed workpiece.
When on fixture, the location hole of usual workpiece will match clamping workpiece with the detent mechanism of fixture.But due to
Different workpiece, location hole cause not of uniform size cause traditional detent mechanism that can not preferably be matched with location hole, impact position
Size (the distance between the positioning surface of workpiece and positioning plate) is easy to influence positioning accuracy.
Invention content
Based on this, it is necessary in view of the above technical problems, provide a kind of fixture can effectively improve positioning accuracy and its
Detent mechanism.
A kind of detent mechanism, including locating bodies, the first spring, the first positioning column and the second positioning column, the positioning is originally
Body is embedded on the positioning plate of the fixture, and locating slot is offered on the locating bodies, and first positioning column is contained in institute
It states in locating slot, first spring pocket is set on first positioning column, and one end of second positioning column offers receiving
The locating slot is stretched into slot, one end that second positioning column offers container, and the other end of second positioning column stretches out
In the locating bodies, and the diameter of the other end of second positioning column gradually subtracts along the direction far from first positioning column
It is small.
Rounded corner is set between the side and end face of the other end of second positioning column in one of the embodiments,.
The end face of the other end of second positioning column, which protrudes outward, in one of the embodiments, is formed with salient point.
When the height of first positioning column is more than first spring in the raw in one of the embodiments,
Height, second positioning column offer the end of container with first spring in the raw when one end phase
It supports, there is spacing between the bottom of the container and first positioning column.
When the height of first positioning column is less than first spring in the raw in one of the embodiments,
Height, the bottom of the container with first spring in the raw when one end offset, the bottom of the container
There is spacing between portion and first positioning column.
The locating slot forms through-hole, institute through the bottom surface of the locating bodies and top surface in one of the embodiments,
The bottom surface for stating locating bodies is additionally provided with baffle, and the shutter is set on the through-hole, first spring and described first
One end of positioning column is abutted against with the baffle.
The first threaded hole, first positioning column and the gear are offered on the baffle in one of the embodiments,
One end that plate offsets offers the second threaded hole, and first threaded hole and described is arranged in successively by the first threaded fastener
In second threaded hole, first positioning column is fixed on the baffle.
Third threaded hole is further opened on the baffle in one of the embodiments, is offered on the locating bodies
4th threaded hole is arranged in by the second threaded fastener in the third threaded hole and the 4th threaded hole successively.
The size of the locating slot is gradual along the direction of the top surface close to the locating bodies in one of the embodiments,
Reduce, the diameter that second positioning column stretches into one end of the locating bodies is more than the locating slot close to the straight of the top surface
Diameter.
A kind of fixture, including：
Pedestal, including bottom plate, positioning plate and pressing plate, the positioning plate include positioning surface, and the positioning surface is for placing work
Part, the positioning plate are set between the positioning plate and the pressing plate；
First cylinder, the end set of piston rod have a clamping jaw, first cylinder for drive the jaw action with
Pressure is applied to the pressing plate；
Second cylinder, for driving the bottom plate to be moved along the direction close to the positioning plate；
Air inlet pipe, escape pipe and the detent mechanism as described in any of the above one, the detent mechanism is embedded at described fixed
In the plate of position, second positioning column stretches out in the positioning surface of the positioning plate, and second positioning column is for the positioning with workpiece
Hole matches.
Above-mentioned fixture and its detent mechanism have at least the following advantages：
When workpiece is placed on the positioning plate of fixture, the other end of the second positioning column is arranged in by the location hole of workpiece,
Since the diameter of the other end of the second positioning column is gradually reduced along far from the direction of the first positioning column, can adapt to it is various not
With the location hole of size the matching degree of detent mechanism and location hole is improved to improve the suitability of detent mechanism.When workpiece is worn
When on the second positioning column, the side wall of the location hole of workpiece and the outer peripheral edge of the second positioning column offset, when pressing plate applies workpiece
When pressure, the second positioning column of workpiece pair presses, and then oppresses the first spring, makes the first spring-compressed, and then reduce workpiece
The distance between positioning surface of positioning plate.When the first spring-compressed to a certain extent, the bottom of container with define positioning column
When inconsistent, the first spring can not be compressed again, ensure its position dimension (the distance between the positioning surface of workpiece and positioning plate),
And then improve positioning accuracy.
Description of the drawings
Fig. 1 is the structural schematic diagram of the fixture in an embodiment；
Fig. 2 is the decomposition diagram of fixture shown in Fig. 1；
Fig. 3 is the decomposition diagram at another visual angle of fixture shown in Fig. 1；
Fig. 4 is the partial schematic diagram of fixture shown in Fig. 2；
Fig. 5 is another partial schematic diagram of fixture shown in Fig. 2；
Fig. 6 is the structural schematic diagram of detent mechanism in Fig. 2；
Fig. 7 is another partial schematic diagram of fixture shown in Fig. 2；
Fig. 8 is the another partial schematic diagram of fixture shown in Fig. 2；
Fig. 9 is the structural schematic diagram of air pressure time-delay valve in Fig. 1；
Figure 10 is the decomposition diagram of air pressure time-delay valve shown in Fig. 9；
Figure 11 is the partial schematic diagram in Fig. 9；
Figure 12 is the decomposition diagram at another visual angle shown in Figure 11；
Figure 13 is the structural schematic diagram at another visual angle of air pressure time-delay valve shown in Fig. 9；
Figure 14 is the sectional view of the line A-A along Figure 13；
Figure 15 is the sectional view of the line B-B along Figure 13；
Figure 16 is the decomposition diagram of the air pressure testing agency in an embodiment.
Specific implementation mode
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with the accompanying drawings to the present invention
Specific implementation mode be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of violating intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not offered as being unique embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article and belong to the technical field of the present invention
The normally understood meaning of technical staff is identical.Used term is intended merely to description tool in the description of the invention herein
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Each technical characteristic of embodiment described above can carry out arbitrarily
Combination, to keep description succinct, it is not all possible to each technical characteristic in above-described embodiment combination be all described, so
And as long as contradiction is not present in the combination of these technical characteristics, all it is considered to be the range of this specification record.
It please refers to Fig.1 to Fig.3, is the fixture 10 in an embodiment.The fixture 10 is mainly used in intelligent numerical control machine tool
On, for fixing workpiece 20, such as phone housing, center etc., so that workpiece 20 is further processed.Specific to this implementation
In mode, fixture 10 includes pedestal 100, detent mechanism 200, the first cylinder 300, the second cylinder 400, air inlet pipe 500, escape pipe
600, air pressure time-delay valve 700 and air pressure testing agency 800.
Also referring to Fig. 4, pedestal 100 includes bottom plate 110, positioning plate 120 and pressing plate 130, and positioning plate includes positioning surface
121, for placing workpiece 20, positioning plate 120 is set between bottom plate 110 and pressing plate 130 positioning surface 121.Workpiece 20 is positioned over
When on fixture 10, workpiece 20 is located between the positioning surface 121 and pressing plate 130 of positioning plate 120.The opposite sides face of pressing plate 130 is set
It is equipped with knob 131, pressing plate 130 20 top of workpiece can be placed in by knob 131, improve the convenience of pressing plate 130.
It is provided with locating rod 140 between bottom plate 110 and pressing plate 130, and offers the first trepanning 132, bottom plate on pressing plate 130
The second trepanning 111 is offered on 110, the both ends of locating rod 140 are embedded at respectively in the first trepanning 132 and in the second trepanning 111,
To improve the positional accuracy between pressing plate 130 and bottom plate 110.
Also referring to Fig. 5 and Fig. 6, detent mechanism 200 is positioned at positioning plate 120 for auxiliary work-piece 20.Localization machine
Structure 200 includes that locating bodies 210, the first spring 220, the first positioning column 230 and the second positioning column 240, locating bodies 210 are embedded
In on the positioning plate 120 of fixture 10.For example, locating bodies 210 can be in substantially rectangular shape, wherein two adjacent sides are equipped with
Unfilled corner is to form error-proof structure.By opening up blind slot 122 on positioning plate 120, detent mechanism 200 is placed in blind slot 122, with
Locating bodies 210 are made to be embedded at the structure of fixture 10.
Locating slot 211 is offered on locating bodies 210, the first positioning column 230 is contained in locating slot 211.First spring
220 are sheathed on the first positioning column 230, and one end of the second positioning column 240 offers container 241, and the second positioning column 240 opens up
There is one end of container 241 to stretch into locating slot 211, the other end of the second positioning column 240 stretches out in locating bodies 210, and
The diameter of the other end of two positioning columns 240 is gradually reduced along the direction far from the first positioning column 230.The size edge of locating slot 211
Direction close to top surface is gradually reduced, and the diameter that the second positioning column 240 stretches into one end of locating bodies 210 is more than locating slot 211
Diameter close to top surface prevents the second positioning column 240 to be detached from out of locating slot 211.
Therefore, when workpiece 20 to be placed on positioning plate 120, the second positioning is arranged in by the location hole 21 on workpiece 20
The other end of column 240 is positioned with auxiliary work-piece 20.And since the diameter of the other end of the second positioning column 240 is along far from first
The direction of positioning column 230 is gradually reduced, therefore can adapt to various different size of location holes 21, to improve detent mechanism 200
Suitability, improve detent mechanism 200 and location hole 21 matching degree, raising positioning accuracy.
Rounded corner 242 is set between the side and end face of the other end of second positioning column 240, therefore work can be effectively prevent
Workpiece 20 is scratched when the location hole 21 of part 20 is arranged on the second positioning column 240.The end face of the other end of second positioning column 240 to
Outer protrusion is formed with salient point 243, at this time can the bottom of the location hole 21 on workpiece 20 be arranged a groove, with 243 phase of boss
Cooperation.
Specific in present embodiment, when the height of the first positioning column 230 is less than the first spring 220 in the raw
Highly, at this time the bottom of container 241 with the first spring 220 in the raw when one end offset, the bottom of container 241
There is spacing between the first positioning column 230.When workpiece 20 is arranged on the second positioning column 240, the location hole 21 of workpiece 20
The outer peripheral edge of side wall and the second positioning column 240 offset.When pressing plate 130 applies pressure to workpiece 20, workpiece 20 is fixed to second
Position column 240 presses, and then oppresses the first spring 220, and the first spring 220 is made to compress, and then reduces workpiece 20 and positioning plate
The distance between 120 positioning surface 121.When the first spring 220 compresses to a certain extent, the bottom of container 241 is fixed with first
When position column 230 is inconsistent, the first spring 220 can not be compressed again.
Certainly, in other embodiments, the height of the first positioning column 230 can also be made to be more than at the first spring 220
Height when nature, at this point, the second positioning column 240 offers the end of container 241 and the first spring 220 is in certainly
One end when right state offsets, and has spacing between the bottom of container 241 and the first positioning column 230.
Specific in present embodiment, locating slot 211 forms through-hole, positioning through the bottom surface of locating bodies 210 and top surface
The bottom surface of ontology 210 is additionally provided with baffle 250, and baffle 250 is covered on through-hole, the first spring 220 and the first positioning column 230
One end offsets with baffle 250.
The first threaded hole is offered on baffle 250, the first positioning column 230 offers second with one end that baffle 250 offsets
Threaded hole is arranged in by the first threaded fastener 260 in the first threaded hole and in the second threaded hole successively, by the first positioning column
230 are fixed on baffle 250.It is further opened with third threaded hole on baffle 250, the 4th threaded hole is offered on locating bodies 210,
It is arranged in successively in third threaded hole and the 4th threaded hole by the second threaded fastener 270, baffle 250 is more securely solid
Due to the bottom of locating bodies 210.
The installation method of detent mechanism 200 is as follows in present embodiment：It is fixed that first the second positioning column 240 is stretched out by through-hole
First spring 220 and the first positioning column 230, are then assembled in locating bodies 210 by the top surface of position ontology 210, finally will gear
Plate 250 is covered on through-hole, is conducive to improve the convenience that detent mechanism 200 assembles.
Fixture 10 further includes mounting plate 900, is fixed on intelligent numerical control machine tool by mounting plate 900, the first cylinder 300 peace
Loaded on mounting plate 900.Also referring to Fig. 7, the end set of the piston rod 310 of the first cylinder 300 has a clamping jaw 320, and first
Cylinder 300 is for driving the movement of clamping jaw 320 to apply pressure to pressing plate 130.
Specific in present embodiment, clamping jaw 320 is rotatablely arranged at the end of piston rod 310.For example, clamping jaw 320
One end be set on piston rod 310 by first rotating shaft 330, locating piece 340 is provided on the first cylinder 300, clamping jaw 320
Middle part is rotatablely arranged at by connecting rod 350 on locating piece 340, and the other end of clamping jaw 320 is free end.Piston rod 310 is stretched
When going out, one end rotation of driving clamping jaw 320, and then the free end of clamping jaw 320 is made to rotate, it is pressed on pressing plate 130.Certainly, at it
In its embodiment, directly about 320 clamping jaw can also be driven to move along a straight line by the flexible of piston rod 310, push down pressing plate
130。
The quantity of first cylinder 300 is multiple, and multiple first cylinders 300 are uniformly distributed in around positioning plate 120, multiple
The air inlet of first cylinder 300 is parallel with one another and is connected with air inlet pipe 500, and the high pressure gas that air inlet pipe 500 is passed through can be with
The first cylinder 300 is directly entered by the air inlet of the first cylinder 300, the first cylinder 300 drives clamping jaw to apply pressing plate 130 and presses
Power.The gas outlet of multiple first cylinders 300 is parallel with one another and is connected with escape pipe 600.For example, the number of the first cylinder 300
Amount is six, and three the first cylinders 300 are set to the side of positioning plate 120, and the first cylinder of the other three 300 is located at positioning plate
120 other side.
Also referring to Fig. 8, the second cylinder 400 is used to that bottom plate 110 to be driven to move along close to the direction of positioning plate 120.Tool
Body, the quantity of the second cylinder 400 is two, and the second cylinder 400 is fixed on peace by support plate 410 and cylinder mounting plate 420
In loading board 900, cylinder mounting plate 420 is set in support plate 410, and support plate 410 is set on mounting plate 900.Second cylinder
400 piston rod and bottom plate 110 are inconsistent, and bottom plate 110 can be driven to be moved along close to the direction of positioning plate 120.
The air inlet of each second cylinder 400 is parallel with one another, and the gas outlet of each second cylinder 400 is parallel with one another.And the
Two cylinders 400 are connect by an air pressure time-delay valve with air inlet pipe 500 and escape pipe 600.
Also referring to Fig. 9 to 15, air pressure time-delay valve 700 includes main body adapting pipe 710, piston 720, vacuum tube 730, the
Two springs 740, air bleeding valve 750, adjusting part 760, sphere filter 770 and end cap 780.Main body adapting pipe 710 is in hollow form, including
First end 711 and second end 712, first end 711 are equipped with air inlet 710a and gas outlet 710b.Be provided at air inlet 710a into
Gas connector 713, such as inlet suction port 713 can be threadedly set at air inlet 710a.It is provided with out at the 710b of gas outlet
Gas connector 714, such as air outlet adapter 714 can be threadedly set at the 710b of gas outlet.
Gas outlet 710b is located at the side wall of first end 710, and air inlet 710a is located at end face or the side wall of first end 711,
The side wall of second end 712 is equipped with venthole 710c, and gas outlet 710b is between air inlet 710a and venthole 710c.Example
Such as, specific in present embodiment, air inlet 710a is located at the end face of first end.The air inlet 710a of air pressure time-delay valve 700 with
The air inlet of first cylinder 300 is in parallel, and is connected with air inlet pipe 500.The gas outlet 710b of air pressure time-delay valve 700 and second
The air inlet of cylinder 400 is connected, and the escape pipe 600 of the first cylinder 300 is in parallel with the gas outlet of the second cylinder 400 and and outlet
Pipe 600 is connected.
Piston 720 is contained in main body adapting pipe 710.For example, it is also possible in piston 720 and main body adapting pipe 710
Sealing ring is set between side wall, to increase the leakproofness between piston 720 and main body adapting pipe 710.It is living when positioned at original state
Fill in the gas outlet 710b of 720 blanket gas pressure time-delay valve 700.
Vacuum tube 730 is contained in main body adapting pipe 710.One end of piston 720 is inserted in vacuum tube 730, works as high pressure
When gas is entered from air inlet 710a in main body adapting pipe 710, driving piston 720 is moved along the direction being inserted into vacuum tube 730.
Protruded inwardly from the madial wall of main body adapting pipe 710 and be formed with limited step 715, gas outlet 710b be located at limited step 715 and
Between air inlet 710a, one end inserted with piston 720 offsets with limited step 715 in vacuum tube 730, therefore vacuum tube 730
No normal direction is moved close to the direction of air inlet.One end that piston 720 stretches into vacuum tube 730 can offset with limited step 715, prevent
Only piston 720 is detached from from main body adapting pipe 710.
Second spring 740 is contained in vacuum tube 730, and one end of second spring 740 is connected on piston 720.Air bleeding valve
750 are contained in vacuum tube 730, and the other end of second spring 740 is connected on air bleeding valve 750.The row of offering on air bleeding valve 750
Stomata 751, the diameter of gas vent 751 are less than the diameter of air inlet 710a.For example, gas vent 751 can be smaller thin of diameter
Hole.Air inlet duct 752 is offered on the side wall of air bleeding valve 750, air inlet duct 752 is connected with gas vent 751.
Adjusting part 760 includes regulating valve 761, buckle 762 and adjusting screw rod 763.Air bleeding valve 750 is solid by buckle 762
Due in regulating valve 761, offering the air channel 7611 being connected with air inlet duct 752 in regulating valve 761, adjusting screw rod 763
One end is connected to through end cap 780 in regulating valve 761.
Specifically, regulating valve 761 is in hollow form and one end open, and open end projects axially outward along it and is formed with fixation
Column 7612 offers the first card slot 7613 on the madial wall of fixed column 7612, and buckle 762 is opened in the first card slot 7613, is arranged
Air valve 750 is located at buckle 762 between regulating valve 761, and air channel 7611 is opened in opposite with its open end in regulating valve 761
The other end.The end face of fixed column 7612 offers the second card slot 7614, and one end of second spring 740 is arranged in the second card slot 7614
It is interior.
The other end of regulating valve 761 projects axially outward to form limited post 7615 along it, is opened up on limited post 7615 limited
Position slot 7616, one end of adjusting screw rod 763 is caught in limiting slot 7616.For example, the periphery in limited post 7615 opens up limiting slot
7616, chuck is arranged in one end of adjusting screw rod 763, is caught in 7616 in limiting slot by chuck, and the setting of adjusting screw rod 763 is existed
One end of regulating valve 761.Adjusting screw rod 763 is the gas outlet 710b to air pressure time-delay valve 700 for the rear end of regulating piston 720
Distance, the length of the distance determines to adjust the length of delay.
Sphere filter 770 is contained in outside main body adapting pipe 710, and positioned at the side-wall outer side for offering venthole 710c, filtering
Circle 770 mainly plays a role in filtering, and prevents extraneous dust from entering in main body adapting pipe 710, it is avoided to enter vacuum tube 730
It is interior.End cap 780 is covered on the end of second end 712.For example, end cap 780 can be set to the end of second end 712 with spiral shell.
When work, high pressure gas is passed through air inlet pipe 500, and then enters the air inlet and air pressure time-delay valve of the first cylinder 300
700 air inlet 710a, high pressure gas drive its piston rod to stretch out and then clamping jaw 320 are driven to rotate after entering the first cylinder 300,
Clamping jaw 320 pushes down pressing plate 130, workpiece 20 is fixed between pressing plate 130 and positioning plate 120, while high pressure gas enters air pressure
Time-delay valve 700, driving piston 720 are moved to the direction for continuing to stretch into vacuum tube 730, the movement progress second spring of piston 720
740 make its compression, and generate air pressure in vacuum tube 730 during promotion, and air pressure pushes air bleeding valve 750 to move, at this time
750 periphery of air bleeding valve by vacuum tube 730 madial wall seal, gas can only by gas vent 751 by air inlet duct 752 again
It is discharged by venthole 710c, since the diameter of gas vent 751 is less than the diameter of air inlet 710a, piston 720 is being pushed
It is obstructed in the process, starts to slow down speed, reach time-lag action, when piston 720 is pushed over gas outlet 710b, high pressure gas is from going out
Gas port 710b discharges reach the second cylinder 400, to which the second cylinder 400 driving positioning plate 120 moves upwards, only with a gas
Press time-delay valve 700 control, avoid air pressure valve excessive, and the air pressure time-delay valve 700 in strict accordance with first drive the first cylinder 300 to
It pushes, then the mode for driving the second cylinder 400 to push up upwards, effectively avoids security risk.
When disconnecting high pressure gas, second spring 740 pushes piston 720 to make to generate negative pressure in vacuum tube 730, at this moment drives
Air is admitted air by sphere filter 770, the air channel 7611 of the venthole 710c of main body adapting pipe 710, regulating valve 761
Into vacuum tube 730, piston 720 resets.
Also referring to Figure 16, air pressure testing agency 800 be used for by detect air pressure with detect workpiece 20 whether clamping
In place and whether the positioning surface of positioning plate 120 121 cleans.The positioning stomata through positioning surface 121 is offered on positioning plate 120
123.Air pressure testing agency 800 includes pressure solenoid valve 810, three-way pipe 820, sealing ring 830 and air pressure regulator 840.
Three-way pipe 820 includes the first opening, the second opening and third opening being interconnected.Pressure solenoid valve 810 and
One opening in communication, the second opening are connected with the air inlet pipe 500 of fixture 10, and third opening is connected with positioning stomata 123.It is close
Seal 830 is set at positioning stomata 123, and positioned at the positioning surface 121 of positioning plate 120.Gas enters threeway through third opening
It is acted on after pipe 820 on positioning stomata 123, the pressure solenoid valve 810 of the first opening connection is used to detect the gas in three-way pipe 820
Pressure is to determine whether clamping in place.
Air pressure regulator 840 is set between the second opening and the air inlet pipe 500 of fixture 10, and is connected to the second opening and folder
The air inlet pipe 500 of tool 10.Air pressure regulator 840 is primarily to ensure the stability of air pressure testing agency.Air pressure testing agency
800 further include warning mechanism, and warning mechanism is electrically connected with pressure solenoid valve 810, when pressure solenoid valve 810 detects that air pressure becomes smaller
When, warning mechanism sends out alarm.
After workpiece 20 is placed in positioning surface 121 of positioning plate 120, the high pressure gas of air inlet pipe 500 passes through the second opening, the
Three opening is passed into positioning stomata 123 in, if 20 clamping of workpiece in place and the positioning surface of positioning plate 120 121 clean, workpiece 20
Surface and the sealing performance of sealing ring 830 it is preferable, at this time position stomata 123 will not gas leakage, pressure solenoid valve 810 detects pre-
Determine atmospheric pressure value, intelligent numerical control machine tool normally starts；If positioning plate 120 is without the positioning surface for clipping to position and/or positioning plate 120
121 is unclean, then 123 gas leakage of positioning stomata on positioning plate 120, the atmospheric pressure value that pressure solenoid valve 810 detects can become smaller, this
When intelligent numerical control machine tool cannot start.Since an air pressure time-delay valve 700, therefore air pressure detection machine in present embodiment, is only arranged
As long as structure 800 is also correspondingly arranged one and can be detected to entire fixture 10.
Several embodiments of the invention above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Range.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (8)
1. a kind of detent mechanism, which is characterized in that including locating bodies, the first spring, the first positioning column and the second positioning column, institute
It states locating bodies to be embedded on the positioning plate of fixture, locating slot, the first positioning column receiving is offered on the locating bodies
In in the locating slot, first spring pocket is set on first positioning column, and one end of second positioning column offers
The locating slot, the other end of second positioning column are stretched into container, one end that second positioning column offers container
Stretch out in the locating bodies, and the diameter of the other end of second positioning column along the direction far from first positioning column by
It is decrescence small；
Wherein, the height when height of first positioning column is more than first spring in the raw, described second is fixed
Position column offer the end of container with first spring in the raw when one end offset, the bottom of the container
There is spacing between first positioning column；Or
The height when height of first positioning column is less than first spring in the raw, the bottom of the container
One end when with first spring in the raw offsets, and has between the bottom of the container and first positioning column
There is spacing.
2. detent mechanism according to claim 1, which is characterized in that the side and end of the other end of second positioning column
Rounded corner is set between face.
3. detent mechanism according to claim 1, which is characterized in that the end face of the other end of second positioning column is outside
Protrusion is formed with salient point.
4. detent mechanism according to claim 1, which is characterized in that the locating slot runs through the bottom surface of the locating bodies
And top surface forms through-hole, and the bottom surfaces of the locating bodies is additionally provided with baffle, and the shutter is set on the through-hole, and described the
One end of one spring and first positioning column is abutted against with the baffle.
5. detent mechanism according to claim 4, which is characterized in that the first threaded hole is offered on the baffle, it is described
First positioning column offers the second threaded hole with one end that the baffle offsets, and institute is arranged in successively by the first threaded fastener
It states in the first threaded hole and second threaded hole, first positioning column is fixed on the baffle.
6. detent mechanism according to claim 5, which is characterized in that be further opened with third threaded hole, institute on the baffle
State and offer the 4th threaded hole on locating bodies, by the second threaded fastener be arranged in successively the third threaded hole with it is described
In 4th threaded hole.
7. detent mechanism according to claim 1, which is characterized in that the close positioning in size edge of the locating slot is originally
The direction of the top surface of body is gradually reduced, and the diameter that second positioning column stretches into one end of the locating bodies is more than the positioning
Diameter of the slot close to the top surface.
8. a kind of fixture, which is characterized in that including：
Pedestal, including bottom plate, positioning plate and pressing plate, the positioning plate include positioning surface, and the positioning surface is for placing workpiece, institute
Positioning plate is stated to be set between the bottom plate and the pressing plate；
The end set of first cylinder, piston rod has clamping jaw, and first cylinder is for driving the jaw action with to institute
It states pressing plate and applies pressure；
Second cylinder, for driving the bottom plate to be moved along the direction close to the positioning plate；
Air inlet pipe, escape pipe and detent mechanism as claimed in any of claims 1 to 7 in one of claims, the detent mechanism are embedded at
In the positioning plate, second positioning column stretches out in the positioning surface of the positioning plate, and second positioning column is used for and workpiece
Location hole match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610404275.0A CN106002396B (en) | 2016-06-08 | 2016-06-08 | Fixture and its detent mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610404275.0A CN106002396B (en) | 2016-06-08 | 2016-06-08 | Fixture and its detent mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106002396A CN106002396A (en) | 2016-10-12 |
| CN106002396B true CN106002396B (en) | 2018-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610404275.0A Active CN106002396B (en) | 2016-06-08 | 2016-06-08 | Fixture and its detent mechanism |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735959B (en) * | 2016-12-28 | 2019-01-25 | 东莞长盈精密技术有限公司 | Laser spot welding fixture |
| CN106695409A (en) * | 2017-02-15 | 2017-05-24 | 珠海格力智能装备有限公司 | Chuck clamp and display screen edge frame processing equipment |
| CN106975876B (en) * | 2017-03-29 | 2019-01-25 | 广东长盈精密技术有限公司 | Welding fixture |
| CN107127607B (en) * | 2017-05-27 | 2023-09-01 | 成都鑫伟鸿科技有限公司 | CNC automatic mobile phone back shell quick clamping manipulator |
| CN108161525B (en) * | 2018-01-05 | 2020-01-10 | 广东长盈精密技术有限公司 | Positioning method of electronic product shell |
| CN108555648A (en) * | 2018-06-20 | 2018-09-21 | 嘉善缔嘉装饰材料有限公司 | A kind of auxiliary device for sheet fabrication |
| CN110977557B (en) * | 2019-12-26 | 2021-05-18 | 浙江博秦精密工业有限公司 | Precise notebook computer shell clamping device |
| CN112571122B (en) * | 2020-11-02 | 2023-09-22 | 无锡铸阳科技有限公司 | Casting positioning device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6013780B2 (en) * | 1979-02-27 | 1985-04-09 | 有限会社尾崎製作所 | Stopper device for machine tools |
| CN201483267U (en) * | 2009-05-12 | 2010-05-26 | 中信戴卡轮毂制造股份有限公司 | Device for float positioning during wheel processing |
| CN104070362B (en) * | 2014-06-30 | 2016-09-07 | 宁波狮球通风机电有限公司 | Casing punching chasing bar |
| CN104440197A (en) * | 2014-12-05 | 2015-03-25 | 重庆耀勇减震器有限公司 | Tail positioning tool for dual-head bore |
| CN204584324U (en) * | 2015-03-24 | 2015-08-26 | 浙江大学 | A kind of automation drilling equipment |
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