CN208759060U - A kind of self-centering fixture - Google Patents
A kind of self-centering fixture Download PDFInfo
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- 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
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- flighted screw
- centering
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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
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.
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)
| 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 |
-
2018
- 2018-09-12 CN CN201821492381.XU patent/CN208759060U/en active Active
Cited By (3)
| 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 |
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