CN212443299U - Cylindrical workpiece clamping and fixing device for three-jaw chuck - Google Patents
Cylindrical workpiece clamping and fixing device for three-jaw chuck Download PDFInfo
- Publication number
- CN212443299U CN212443299U CN202021341563.4U CN202021341563U CN212443299U CN 212443299 U CN212443299 U CN 212443299U CN 202021341563 U CN202021341563 U CN 202021341563U CN 212443299 U CN212443299 U CN 212443299U
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- Prior art keywords
- clamping
- jaw chuck
- mounting panel
- splint
- installation
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- Expired - Fee Related
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- 238000009434 installation Methods 0.000 claims abstract description 28
- 230000006978 adaptation Effects 0.000 claims abstract description 7
- 238000003754 machining Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 2
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a three-jaw chuck presss from both sides tight fixing device with cylindrical work piece belongs to work piece fixing device technical field. The clamping and fixing device comprises a fixing seat, the fixing seat comprises an installation part for installing workpieces and a connecting part connected with a chuck, a positioning column for positioning the workpieces is arranged on the inner surface of the bottom of the installation part, three installation plates are uniformly arranged on the installation part, and a clamping mechanism for clamping the workpieces is arranged on the installation plates. Clamping mechanism includes splint, and splint pass through the slide to be connected with the lead screw of setting on the mounting panel, be provided with the screw hole with lead screw looks adaptation on the mounting panel, and the one end and the mounting panel of lead screw rotate to be connected, are provided with the slide rail on the side that the mounting panel is close to splint, and splint are close to and are provided with the spout with slide rail looks adaptation on the side of mounting panel. The utility model adopts the above structure a three-jaw chuck presss from both sides tight fixing device with cylindrical work piece can solve that three-jaw chuck machining precision is low, press from both sides tight poor problem of fastness to the work piece.
Description
Technical Field
The utility model belongs to the technical field of the work piece fixing device technique and specifically relates to a three-jaw chuck presss from both sides tight fixing device with cylindrical work piece.
Background
The three-jaw chuck is the most commonly used lathe and is not high in concentric precision of a universal fixture of a numerical control lathe, is not suitable for secondary clamping when the requirement on coaxiality of parts is high, and is low in machining precision. When a workpiece to be machined is positioned by an excircle, and the outer diameter of the workpiece is smaller, the inner diameter of the three claws is larger than the outer diameter of the workpiece, so that the three claws and the workpiece form three-point contact, and the clamping firmness is poorer.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a three-jaw chuck presss from both sides tight fixing device with cylindrical work piece solves the low, poor problem of tight fastness of work piece clamp of three-jaw chuck machining precision.
In order to achieve the purpose, the utility model provides a cylindrical workpiece clamping and fixing device for a three-jaw chuck, which comprises a fixed seat, wherein the fixed seat comprises an installation part for installing a workpiece and a connecting part connected with the chuck, a positioning column for positioning the workpiece is arranged on the inner surface of the bottom of the installation part, three installation plates are uniformly arranged on the installation part, and a clamping mechanism for clamping the workpiece is arranged on the installation plates;
clamping mechanism includes splint, and splint pass through the slide to be connected with the lead screw of setting on the mounting panel, be provided with on the mounting panel with the screw hole of lead screw looks adaptation, the one end and the mounting panel of lead screw rotate to be connected, are provided with the slide rail on the side that the mounting panel is close to splint, splint be close to the side of mounting panel on be provided with the spout with slide rail looks adaptation.
Preferably, the outer surface of the connecting part is provided with clamping grooves which are in one-to-one correspondence with the clamping jaws of the chuck along the axial direction of the connecting part, and anti-skid grains are arranged inside the clamping grooves.
Preferably, the outer diameter of the connecting part is equal to that of the mounting part, and the mounting plate is provided with an outward flange.
Preferably, the positioning column is of a prismatic structure, and the positioning column is coaxial with the mounting portion.
Preferably, the sliding groove is of a dovetail groove structure, the sliding rail is of a dovetail tenon structure, and the clamping plate is fixedly connected with the sliding plate through screws.
Preferably, the bottom inner surface of the installation part is provided with a guide groove, and the bottom end of the sliding plate is provided with a guide block matched with the guide groove.
A three-jaw chuck presss from both sides tight fixing device with cylindrical work piece, the inside of installation department is provided with splint, splint peg graft with the slide, can change the splint of equidimension and radian not as required to press from both sides tight work piece. The rotary screw rod can adjust the size of the circumference formed by the three clamping plates and can clamp and fix workpieces with different sizes. The prismatic positioning column facilitates the installation of the workpiece, can effectively prevent the workpiece from rotating under the action of cutting force, and improves the machining precision. The fixing seat is adjusted and installed on the chuck, and then the fixing seat does not need to be adjusted, so that the workpiece processing efficiency is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a cylindrical workpiece clamping and fixing device for a three-jaw chuck according to the present invention;
fig. 2 is a schematic cross-sectional structural view of an embodiment of a cylindrical workpiece clamping and fixing device for a three-jaw chuck according to the present invention;
fig. 3 is a schematic view of a fixing seat structure of an embodiment of the cylindrical workpiece clamping and fixing device for a three-jaw chuck of the present invention.
Reference numerals
1. A fixed seat; 2. an installation part; 3. a connecting portion; 4. mounting a plate; 5. a slide plate; 6. a splint; 7. a chute; 8. a slide rail; 9. a positioning column; 10. a guide groove; 11. a screw rod; 12. a guide block; 13. a card slot; 14. flanging; 15. a threaded bore.
Detailed Description
Examples
Fig. 1 is the utility model relates to a three-jaw chuck presss from both sides tight schematic structure diagram of fixing device embodiment with cylindrical work piece, fig. 2 is the utility model relates to a three-jaw chuck presss from both sides tight sectional structure diagram of fixing device embodiment with cylindrical work piece, fig. 3 is the utility model relates to a three-jaw chuck presss from both sides tight fixing device structure diagram with cylindrical work piece embodiment with the fixing base structure diagram. As shown in the figure, the cylindrical workpiece clamping and fixing device for the three-jaw chuck comprises a fixing seat 1 made of metal materials, wherein the fixing seat 1 comprises an installation part 2 for installing workpieces and a connecting part 3 connected with the chuck, and the installation part 2 and the connecting part 3 are of an integrated structure. The external diameter of connecting portion 3 equals with the external diameter of installation department 2, sets up in flanging 14 on mounting panel 4, and flanging 14 supports and leans on the terminal surface of chuck, realizes the location of fixing base 1 on the chuck.
The inner surface of the bottom of the mounting part 2 is provided with a positioning column 9 for positioning the workpiece, the positioning column 9 is of a prismatic structure, more preferably a regular prismatic structure, and the positioning column 9 is coaxial with the mounting part 2. The positioning column 9 in this embodiment is a regular triangular prism structure, and is matched with the groove at the bottom of the workpiece. The workpiece is clamped on the positioning column 9 to realize the positioning of the workpiece on the connecting part 3, and the positioning column 9 with the prismatic structure can effectively prevent the workpiece from rotating.
The installation part 2 is evenly provided with three installation plates 4, 4 circular arc plates. The mounting plate 4 is provided with a clamping mechanism for clamping a workpiece. The clamping mechanism comprises an arc-shaped clamping plate 6, and the clamping plate 6 is connected with a screw rod 11 arranged on the mounting plate 4 through a sliding plate 5. The mounting plate 4 is provided with a threaded hole 15 matched with the screw rod 11, and one end of the screw rod 11 is rotatably connected with the mounting plate 4 through a bearing. An extension line of the screw 11 intersects with an axis of the mounting portion 2. The rotation of the screw rod 11 causes the screw rod 11 to extend or contract within the mounting plate 4, thereby driving the clamping plate 6 to slide within the mounting portion 2 via the slide plate 5. A slide rail 8 is arranged on one side surface of the mounting plate 4 close to the clamping plate 6, and a slide groove 7 matched with the slide rail 8 is arranged on one side surface of the clamping plate 6 close to the mounting plate 4. The sliding groove 7 is of a dovetail groove structure, and the sliding rail 8 is of a dovetail tenon structure. The clamping plate 6 is arranged on the sliding plate 5 through the sliding chute 7 and the sliding rail 8, and the clamping plate 6 is fixedly connected with the sliding plate 5 through screws. The size and radian of the clamping plate 6 can be changed according to the requirements of the workpiece so as to improve the stability of clamping the workpiece.
The inner surface of the bottom of the mounting part 2 is provided with a rectangular guide groove 10 in a long strip shape, and the guide grooves 10 correspond to the sliding plates 5 one by one. The guide grooves 10 are arranged in parallel with the screw rods 11 which drive the corresponding sliding plates 5 to slide. The bottom end of the sliding plate 5 is provided with a guide block 12 matched with the guide groove 10, and the guide block 12 is positioned inside the guide groove 10 and is in sliding connection with the guide groove 10. The guide grooves 10 have a guiding function for sliding the slide 5.
The outer surface of the connecting part 3 is provided with clamping grooves 13 which are in one-to-one correspondence with the clamping jaws of the chuck along the axial direction, and anti-skid grains are arranged inside the clamping grooves 13. The jack catch card is established in draw-in groove 13, improves the steadiness that the jack catch presss from both sides tight connecting portion 3.
When in use, a proper clamping plate 6 is selected to be arranged on the sliding plate 5 and fixedly connected through a screw; then insert connecting portion 3 in the inside of chuck, the axis of adjustment connecting portion 3 is on the processing axis, then presss from both sides tight connecting portion 3 through the jack catch, then places the work piece on reference column 9 of installation department 2, and rotatory lead screw 11 drives splint 6 through slide 5 and moves towards the center of installation department 2 and press from both sides tightly on the work piece surface, accomplishes the installation of work piece.
Therefore, the utility model adopts the above structure a cylindrical work piece presss from both sides tight fixing device for three-jaw chuck can solve the low, poor problem of tight fastness of work piece clamp of three-jaw chuck machining precision.
The above are specific embodiments of the present invention, but the scope of protection of the present invention should not be limited thereto. Any changes or substitutions which can be easily conceived by those skilled in the art within the technical scope of the present invention are covered by the protection scope of the present invention, and therefore, the protection scope of the present invention is subject to the protection scope defined by the claims.
Claims (6)
1. The utility model provides a cylindrical work piece presss from both sides tight fixing device for three-jaw chuck which characterized in that: the clamping device comprises a fixed seat, wherein the fixed seat comprises an installation part for installing a workpiece and a connecting part connected with a chuck, a positioning column for positioning the workpiece is arranged on the inner surface of the bottom of the installation part, three installation plates are uniformly arranged on the installation part, and a clamping mechanism for clamping the workpiece is arranged on each installation plate;
clamping mechanism includes splint, and splint pass through the slide to be connected with the lead screw of setting on the mounting panel, be provided with on the mounting panel with the screw hole of lead screw looks adaptation, the one end and the mounting panel of lead screw rotate to be connected, are provided with the slide rail on the side that the mounting panel is close to splint, splint be close to the side of mounting panel on be provided with the spout with slide rail looks adaptation.
2. The cylindrical workpiece clamping fixture for a three-jaw chuck as set forth in claim 1, wherein: the outer surface of the connecting part is provided with clamping grooves which are in one-to-one correspondence with the clamping jaws of the chuck along the axial direction of the connecting part, and anti-skid grains are arranged inside the clamping grooves.
3. The cylindrical workpiece clamping fixture for a three-jaw chuck as set forth in claim 1, wherein: the outer diameter of the connecting part is equal to that of the mounting part, and the mounting plate is provided with an outward flange.
4. The cylindrical workpiece clamping fixture for a three-jaw chuck as set forth in claim 1, wherein: the positioning column is of a prismatic structure and is coaxial with the mounting part.
5. The cylindrical workpiece clamping fixture for a three-jaw chuck as set forth in claim 1, wherein: the sliding groove is of a dovetail groove structure, the sliding rail is of a dovetail tenon structure, and the clamping plate is fixedly connected with the sliding plate through screws.
6. The cylindrical workpiece clamping fixture for a three-jaw chuck as set forth in claim 1, wherein: the bottom internal surface of installation department is provided with the guide slot, and the bottom of slide is provided with the guide block with guide slot looks adaptation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021341563.4U CN212443299U (en) | 2020-07-09 | 2020-07-09 | Cylindrical workpiece clamping and fixing device for three-jaw chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021341563.4U CN212443299U (en) | 2020-07-09 | 2020-07-09 | Cylindrical workpiece clamping and fixing device for three-jaw chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212443299U true CN212443299U (en) | 2021-02-02 |
Family
ID=74484847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021341563.4U Expired - Fee Related CN212443299U (en) | 2020-07-09 | 2020-07-09 | Cylindrical workpiece clamping and fixing device for three-jaw chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212443299U (en) |
-
2020
- 2020-07-09 CN CN202021341563.4U patent/CN212443299U/en not_active Expired - Fee Related
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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: 20210202 |