CN208759060U - A kind of self-centering fixture - Google Patents

A kind of self-centering fixture Download PDF

Info

Publication number
CN208759060U
CN208759060U CN201821492381.XU CN201821492381U CN208759060U CN 208759060 U CN208759060 U CN 208759060U CN 201821492381 U CN201821492381 U CN 201821492381U CN 208759060 U CN208759060 U CN 208759060U
Authority
CN
China
Prior art keywords
reverse
self
fixture
flighted screw
centering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201821492381.XU
Other languages
Chinese (zh)
Inventor
宋永辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN201821492381.XU priority Critical patent/CN208759060U/en
Application granted granted Critical
Publication of CN208759060U publication Critical patent/CN208759060U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Jigs For Machine Tools (AREA)

Abstract

The utility model is about a kind of self-centering fixture, including pedestal, the pedestal is rounded, the pedestal is equipped with a two-way lead screw, a jaw plate is connected separately on two nuts of two-way lead screw, two jaw plates are symmetrical arranged, and vertical V-shaped grooves and horizontal V-shaped slot are respectively provided on the first clamping face of two jaw plates, the vertical V-shaped grooves and horizontal V-shaped slot on two jaw plates are oppositely arranged.After adopting the above structure, the beneficial effect is that, can be self-centering, guarantee that center will not move, while various workpieces or material can be clamped, it is applied widely.

Description

A kind of self-centering fixture
Technical field
The utility model belongs to clamp art, is about a kind of self-centering fixture specifically.
Background technique
Fixture appears in 18 th century laters earliest.With being constantly progressive for science and technology, fixture is from a kind of auxiliary tool Develop into technological equipment covering extensive fields.
Modern production requires product variety manufactured by enterprise often to update, to adapt to the demand and competition in market. And existing special fixture is typically only capable to be suitable for the part of single equipment or certain specific shape, the scope of application is small.Cause It is necessary to be improved for this.
Utility model content
The purpose of the utility model is to provide a kind of self-centering fixtures, may be only available for list to solve existing special fixture The problem of part of one equipment or certain specific shape.
To achieve the above object, the utility model uses following technical scheme:
A kind of self-centering fixture, including pedestal, the pedestal is rounded, and the pedestal is equipped with a two-way lead screw, two-way A jaw plate is connected separately on two nuts of lead screw, two jaw plates are symmetrical arranged, respectively set on the first clamping face of two jaw plates There are vertical V-shaped grooves and horizontal V-shaped slot, the vertical V-shaped grooves and horizontal V-shaped slot on two jaw plates are oppositely arranged.
According to the utility model, the vertical V-shaped grooves and horizontal V-shaped slot are arranged in a crossed manner, constitute a cross bath, can be with For vertically clamping cylindrical material, horizontal clamping cylindrical material, the material for clamping crosswise, clamping T shape material, clamping rule The material of the common shapes such as material then considerably increases the original processing range of lathe, realizes one-machine-multi-function.
According to the utility model, the longitudinal section on the top of the jaw plate is L-shaped, including the first fixture block and the second fixture block, First fixture block and the second fixture block are integrally formed, the thickness of the thickness of first fixture block less than the second fixture block, the first fixture block and the The leading flank of two fixture blocks constitutes first clamping face in same level, and the trailing flank of first fixture block is second Clamping face.The setting of second clamping face of two jaw plates can be used for clamping semi-circular shape workpiece, annular workpiece, one end are opened The side frame structure member etc. of mouth.
According to the utility model, the two-way lead screw includes a reverse-flighted screw and two nuts on reverse-flighted screw, institute The one or both ends for stating reverse-flighted screw are equipped with a drive rod, and the drive rod is fixedly connected with reverse-flighted screw, in use, by pulling Hand rotation of drive rod, so that reverse-flighted screw be driven to rotate.
Preferably, the drive rod is hex drive bar.
Further, the drive rod is connect with driving equipment, drives drive rod to rotate by driving equipment, thus band Dynamic reverse-flighted screw rotates clockwise or counterclockwise, and then realizes clamp or release workpiece.
According to the utility model, the two-way lead screw includes a reverse-flighted screw and two nuts on reverse-flighted screw, institute It states reverse-flighted screw to connect with driving equipment, drives reverse-flighted screw to rotate clockwise or counterclockwise by driving equipment, thus real Existing clamp or release workpiece.
Further, the both ends of the reverse-flighted screw are equipped with block, prevent two nuts from screwing out reverse-flighted screw, lead to jaw plate Overload and fall off from reverse-flighted screw.
According to the utility model, a positioning block, the locating piece, including an arc-shaped mouth, institute are additionally provided on the pedestal It states arc-shaped mouth to match with reverse-flighted screw, so that reverse-flighted screw can be rotated relative to the arc-shaped mouth, the locating piece is buckled in The middle part of reverse-flighted screw, the both ends of locating piece are then fixed on the base, are moved on the base to limit reverse-flighted screw.
The self-centering fixture of the utility model, the beneficial effect is that:
1, two-way lead screw and two jaw plates are equipped with, and since the screw pitch of the both ends screw thread of Bidirectional-screw is identical, are used When spanner drives hex drive bar, no matter rotate in a circumferential direction how many, as two jaw plates are centripetal or the distance that is displaced outwardly is , realize that center is constant always.Therefore, using the self-centering fixture, just can make without centering workpiece promptly position and Clamping/tensioner, reduces unproductive time significantly, is conducive to raise labour productivity;Meanwhile using self-centering fixture after, produce Quality is stablized, and rejection rate decline can arrange the lower worker of industrial grade, it will be apparent that reduce production cost.
2, the first clamping face of two jaw plates can clamp the material of rule, and material symmetrical centre automatic capturing;Vertical V The setting of shape slot can vertically clamp cylindrical material, and center automatic capturing;The setting of horizontal V-shaped slot horizontal can clamp Cylindrical material, and center automatic capturing;Being equipped with for vertical V-shaped grooves and horizontal V-shaped slot, allows two jaw plates vertical Clamp cylindrical material, horizontal clamping cylindrical material, the material for clamping crosswise, clamping T shape material and clamping rule The material of the common shapes such as material considerably increases the original processing range of lathe, realizes one-machine-multi-function.
3, the setting of the second clamping face of two jaw plates, can be used for clamping semi-circular shape workpiece, annular workpiece, one end The border structure etc. of opening considerably increases the original processing range of lathe, realizes one-machine-multi-function.
4, its structure is simple, and clamping workpiece is convenient, can reduce the labor intensity of worker.
Detailed description of the invention
Fig. 1 is the top view illustration of the self-centering fixture of the utility model.
Fig. 2 is the front view schematic diagram of the self-centering fixture of the utility model.
Fig. 3 is the structural schematic diagram of the jaw plate of the utility model.
Fig. 4 is the perspective view schematic diagram of the self-centering fixture of the utility model.
Fig. 5 is another top view illustration of the self-centering fixture of the utility model.
Fig. 6 is another perspective view schematic diagram of the self-centering fixture of the utility model.
Specific embodiment
Below in conjunction with specific attached drawing, the self-centering fixture of the utility model is described in further detail.In the present embodiment Description in, unless otherwise indicated, the orientation or positional relationships of the instructions such as term "front", "rear" is orientation based on the figure Or positional relationship, it is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion meaning is self-centering Fixture must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as the limit to the utility model System.
It as depicted in figs. 1 and 2, is a kind of self-centering fixture of the utility model, including pedestal 1, the pedestal 1 is in circle Shape facilitates determining clamp central, so that convenient set center on lathe, the pedestal 1 is equipped with a two-way lead screw 2, two-way It is connected separately with a jaw plate 3 on two nuts of lead screw 2, two jaw plates 3 are symmetrical arranged, as shown in figure 3, the of two jaw plates 3 Vertical V-shaped grooves 31 and horizontal V-shaped slot 32, vertical V-shaped grooves 31 and horizontal V-shaped slot on two jaw plates 3 are respectively provided on one clamping face 32 are oppositely arranged.
The vertical V-shaped grooves 31 and horizontal V-shaped slot 32 are arranged in a crossed manner, constitute a cross bath, can be used for vertical folder Hold cylindrical material, horizontal clamping cylindrical material, the material for clamping crosswise, clamping T shape material, material of clamping rule etc. The material of common shape considerably increases the original processing range of lathe, realizes one-machine-multi-function.
As shown in Figure 5 and Figure 6, the longitudinal section on the top of the jaw plate 3 is L-shaped, including the first fixture block 33 and the second folder Block 34, the first fixture block 33 and the second fixture block 34 are integrally formed, the thickness of first fixture block 33 less than the second fixture block 34 thickness, The leading flank of first fixture block 33 and the second fixture block 34 constitutes first clamping face, first folder in same level The trailing flank of block 33 is the second clamping face.The setting of second clamping face of two jaw plates 3, can be used for clamping semi-circular shape work Part, annular workpiece, side frame structure member open at one end etc..
The both ends of the reverse-flighted screw 21 of two-way lead screw 2 are equipped with block (being not shown on figure), prevent two nuts from screwing out two-way spiral shell Bar 21 leads to 3 overload of jaw plate and falls off from reverse-flighted screw 21.
It is additionally provided with a positioning block 5 on the pedestal 1, the locating piece 5 includes an arc-shaped mouth, the arc-shaped mouth and double Match to screw rod 21, so that reverse-flighted screw can be rotated relative to the arc-shaped mouth, the arc-shaped mouth of the locating piece is buckled in double To the middle part of screw rod 21, the both ends of locating piece 5 are then fixed on pedestal 1, are moved on pedestal 1 to limit reverse-flighted screw 21.
As shown in figure 4, being provided with a groove 7 on the pedestal 1, the two-way lead screw 2 is set in the groove 7, described The middle part of jaw plate 3 is connect with the nut of two-way lead screw 2, and the both ends of jaw plate 3 then ride upon on pedestal 1, the both ends of locating piece 5 It is fixed on the groove 7 of pedestal 1, the upper surface of upper surface and pedestal 1 is in same level, in order to place workpiece or material Material.
There are many rotating manners of the two-way lead screw 2 of the utility model:
First way are as follows:
The two-way lead screw 2 include reverse-flighted screw 21 and two nuts on reverse-flighted screw 21, the one of reverse-flighted screw 21 Section is right-handed thread, and another section is left hand thread, and two nuts are respectively left-handed nut and right-handed nut, the reverse-flighted screw 21 One or both ends are equipped with a drive rod 4, and the drive rod 4 is fixedly connected with reverse-flighted screw 21, and when use passes through spanner rotation drive Lever 4, so that reverse-flighted screw 21 be driven to rotate.The drive rod 4 is hex drive bar.
In use, workpiece or material are placed between two jaw plates 3, when rotation drive rod 4 counterclockwise, two jaw plates 3 It is displaced outwardly simultaneously, unclamps workpiece or material;When rotating clockwise drive rod 4, two jaw plates, 3 centripetal movement simultaneously is clamped Workpiece or material.
When workpiece is semi-circular shape, annular workpiece, border structure open at one end etc., the second clamping face can be used Carry out tensioner.When rotation drive rod 4 counterclockwise, two jaw plates 3 are displaced outwardly simultaneously, tensioner workpiece or material;When clockwise When rotating drive rod 4, workpiece or material are unclamped in two jaw plates, 3 centripetal movement simultaneously.
The second way are as follows:
The two-way lead screw 2 includes a reverse-flighted screw 21 and two nuts on reverse-flighted screw 21, reverse-flighted screw 21 One section is right-handed thread, and another section is left hand thread, and two nuts are respectively left-handed nut and right-handed nut, the reverse-flighted screw 21 One or both ends be equipped with a drive rod 4, the drive rod 4 is fixedly connected with reverse-flighted screw 21, and when use passes through spanner rotation Drive rod 4, so that reverse-flighted screw 21 be driven to rotate.The drive rod 4 is connect with driving equipment (such as servo motor), passes through drive Dynamic equipment drives drive rod 4 to rotate, so that reverse-flighted screw 21 be driven to rotate clockwise or counterclockwise, and then realizes and clamps or pine Go into operation part.
The third mode are as follows:
The two-way lead screw 2 include reverse-flighted screw 21 and two nuts on reverse-flighted screw 21, the one of reverse-flighted screw 21 Section is right-handed thread, and another section is left hand thread, and two nuts are respectively left-handed nut and right-handed nut, the reverse-flighted screw 21 with Driving equipment (being not shown on figure) connection, drives reverse-flighted screw to rotate clockwise or counterclockwise by driving equipment, thus real Existing clamp or release workpiece.Reverse-flighted screw 21 is driven to rotate when use by driving equipment.
In use, the pedestal 1 of fixture is mounted on the workbench of lathe, workpiece is then placed on two jaw plates 3 Between, then, the centripetal movement simultaneously of reverse-flighted screw 21 is driven by rotating clockwise spanner, clamps workpiece.After processing is completed, Rotary spanner counterclockwise drives reverse-flighted screw 21 being while displaced outwardly, release workpiece.Pedestal and lathe can use a variety of sides Formula cooperation, for example, T-slot 6 is arranged in the bottom of pedestal 1, the T-slot 6 and the workbench of lathe match;For another example, in pedestal Upper increase flanged plate, the workbench of lathe are detachably connected with the flanged plate by fixing piece.
It, can be using jaw plate 3 when workpiece is semi-circular shape, annular workpiece, border structure open at one end etc. Second clamping face carries out tensioner.At this point, workpiece is set on the second clamping face of two jaw plates 3.Then, by counterclockwise Rotary spanner drives reverse-flighted screw while being displaced outwardly, and carrys out tensioner workpiece.After processing is completed, spanner is rotated clockwise to drive The centripetal movement simultaneously of reverse-flighted screw 21, unclamps workpiece.
Plurality of specifications can be set in the fixture of the present embodiment, in use, can select different size according to the size of workpiece Fixture.It is exemplified below the part specification of fixture, but is not limited to the fixture of other specifications.Specifically it is shown in Table 1.
The specification of 1 fixture of table
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made.These improve and Retouching also should be regarded as the protection scope of the utility model.

Claims (9)

1. a kind of self-centering fixture, which is characterized in that including pedestal, the pedestal is rounded, and it is two-way that the pedestal is equipped with one Lead screw is connected separately with a jaw plate on two nuts of two-way lead screw, and two jaw plates are symmetrical arranged, the first clamping of two jaw plates Vertical V-shaped grooves and horizontal V-shaped slot are respectively provided on face, the vertical V-shaped grooves and horizontal V-shaped slot on two jaw plates are oppositely arranged.
2. self-centering fixture as described in claim 1, which is characterized in that the vertical V-shaped grooves and horizontal V-shaped slot intersection are set It sets.
3. self-centering fixture as described in claim 1, which is characterized in that the longitudinal section on the top of the jaw plate is L-shaped, packet The first fixture block and the second fixture block are included, the first fixture block and the second fixture block are integrally formed, and the thickness of first fixture block is less than the second folder The leading flank of the thickness of block, the first fixture block and the second fixture block constitutes first clamping face in same level, and described the The trailing flank of one fixture block is the second clamping face.
4. self-centering fixture as described in claim 1, which is characterized in that the two-way lead screw includes a reverse-flighted screw and is set to The one or both ends of two nuts on reverse-flighted screw, the reverse-flighted screw are equipped with a drive rod, the drive rod and reverse-flighted screw It is fixedly connected.
5. self-centering fixture as claimed in claim 4, which is characterized in that the drive rod is hex drive bar.
6. self-centering fixture as claimed in claim 4, which is characterized in that the drive rod is connect with driving equipment.
7. self-centering fixture as described in claim 1, which is characterized in that the two-way lead screw includes a reverse-flighted screw and is set to Two nuts on reverse-flighted screw, the reverse-flighted screw are connect with driving equipment.
8. such as the described in any item self-centering fixtures of claim 4-7, which is characterized in that the both ends of the reverse-flighted screw are equipped with gear Block.
9. such as the described in any item self-centering fixtures of claim 4-7, which is characterized in that be additionally provided with a positioning on the pedestal Block, the locating piece include an arc-shaped mouth, and the arc-shaped mouth matches with reverse-flighted screw, and the locating piece is buckled in two-way The middle part of screw rod, the both ends of locating piece are then fixed on the base.
CN201821492381.XU 2018-09-12 2018-09-12 A kind of self-centering fixture Active CN208759060U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821492381.XU CN208759060U (en) 2018-09-12 2018-09-12 A kind of self-centering fixture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821492381.XU CN208759060U (en) 2018-09-12 2018-09-12 A kind of self-centering fixture

Publications (1)

Publication Number Publication Date
CN208759060U true CN208759060U (en) 2019-04-19

Family

ID=66134725

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821492381.XU Active CN208759060U (en) 2018-09-12 2018-09-12 A kind of self-centering fixture

Country Status (1)

Country Link
CN (1) CN208759060U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110124909A (en) * 2019-06-23 2019-08-16 安徽江锐新材料有限公司 A kind of Multi-angle rotary automobile component water paint spraying equipment
CN110193743A (en) * 2019-05-09 2019-09-03 徐州重型机械有限公司 A kind of alignment positioning device and to boring machine
CN113770956A (en) * 2021-09-13 2021-12-10 北方联创通信有限公司 Electric fitting auxiliary device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110193743A (en) * 2019-05-09 2019-09-03 徐州重型机械有限公司 A kind of alignment positioning device and to boring machine
CN110124909A (en) * 2019-06-23 2019-08-16 安徽江锐新材料有限公司 A kind of Multi-angle rotary automobile component water paint spraying equipment
CN113770956A (en) * 2021-09-13 2021-12-10 北方联创通信有限公司 Electric fitting auxiliary device

Similar Documents

Publication Publication Date Title
CN208759060U (en) A kind of self-centering fixture
CN207431798U (en) A kind of hole special drill press fixture that can beat round piece
CN203253956U (en) Manual four-jaw chuck with precise scales
CN204639978U (en) Press from both sides lock smith's clamp more
CN209335476U (en) A kind of machine-building pincers worker fixture
CN207606712U (en) A kind of novel and multifunctional Universal bench vice
CN108127591A (en) Workpiece grip mechanism
CN204209477U (en) A kind of die casting modified product hole locating pneumatic fixture
CN202655958U (en) Processing and clamping fixture for inclined top of die
CN210588274U (en) Stable clamping mechanism for machining shaft core
CN104175150A (en) Pressure casting transformed special-shaped product hole positioning pneumatic clamp and clamping method
CN207534380U (en) A kind of rat holing special fixture
CN208083887U (en) Round piece quick clamping tool structure
CN213703149U (en) Pneumatic clamp capable of being freely stretched
CN210360803U (en) Irregular metallographic specimen polishing clamp
CN207723510U (en) A kind of square workpiece fixture
CN209190283U (en) A kind of milling machine convenient for the fixed processing of special-shaped workpiece
CN207272733U (en) A kind of large-scale milling machine tooling fixture
CN215545571U (en) Wire cutting tool
CN205465312U (en) Precision clamp of clamping hole excircle class part
CN211332267U (en) Multi-station self-pushing centering clamp for glass mold forming initial mold
CN101554667A (en) Chuck structure of three-claw interlocking heavy horizontal lathe
CN205465681U (en) Automatic thread grinder's of extrusion tap synchronous lead screw feeding mechanism
CN209698917U (en) A kind of machining solid mechanical fixture
CN209664339U (en) Clamping device

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant