CN206253668U - A kind of Special three-jaw chuck of clamping square part - Google Patents
A kind of Special three-jaw chuck of clamping square part Download PDFInfo
- Publication number
- CN206253668U CN206253668U CN201621298777.1U CN201621298777U CN206253668U CN 206253668 U CN206253668 U CN 206253668U CN 201621298777 U CN201621298777 U CN 201621298777U CN 206253668 U CN206253668 U CN 206253668U
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- pawl
- jaw
- recessed
- clamping
- workpiece
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Abstract
The utility model is related to be machined tooling fixture technical field, specifically a kind of Special three-jaw chuck of clamping square part.For center band endoporus and cylindrical square part, traditional processing method is that on chuck lathe, by line centering, the clamping time is long, and centering precision is low.The utility model provides a kind of Special three-jaw chuck of clamping square part.The three-jaw of scroll chuck is constituted by a tack pawl and with 90 ° of left recessed pawls of groove, right recessed pawl, and the angle between two recessed pawls is 90 °, and 135 ° are with the angle of tack pawl.Two groove center points of recessed pawl are to three-jaw centre distance for tack pawlTimes.During three-jaw tight by four square holes of scroll chuck with spanner, three-jaw can simultaneously contact workpiece surface, realize fast and accurately clamping workpiece.Suitable for the clamping of square part, clamping efficiency and product quality are increased substantially.
Description
Technical field
The utility model is related to be machined tooling fixture technical field, specifically a kind of clamping square part
Special three-jaw chuck, for square accessory turning central bore and the clamping of outer bowlder, realize square parts quick positioning,
Clamping.
Background technology
There are center band endoporus and cylindrical square part, traditional processing method in the products such as most of pumps, valve
It is the line after profile square is processed, then on chuck lathe, according to the line for pulling, four paws centering is, it is necessary to four
Individual chuck jaw one by one, centering repeatedly several times, the clamping time is very long, and can only observe by the naked eye the line for pulling and look for
Just, centering precision is not high.For big, high precision the part of batch, chuck lathe process is not applied to.
The content of the invention
The invention aims to solve when big batch, the square Central of the parts endoporus and Excircle machining of high precision
Clamping, centering problem, improve processing efficiency and machining accuracy.The utility model provides special the three of a kind of clamping square part
Dog chuck.Using scroll chuck self-centering principle, three-jaw fastens workpiece simultaneously, is not required to centering, Set and Positioning efficiency high, speed
Hurry up, significantly accelerate production efficiency.
The utility model solves the technical scheme that its technical problem used：The three-jaw of chuck by tack pawl, left recessed pawl,
Right recessed pawl composition.Tack pawl is the three-jaw of common scroll chuck, and symmetrically, front end is designed with using for left recessed pawl and right recessed pawl or so
In the groove of clamping workpiece, groove is groove, and it is shaped as isosceles right triangle, and the symmetrical center line of triangle is long with corpus unguis
Degree direction symmetrical center line overlaps, and the groove center point C of left recessed pawl, the groove center point D of right recessed pawl respectively set at C points, D points
There is an escape, the angle between left recessed pawl and right recessed pawl is 90 °, and angle is between left recessed pawl and right recessed pawl and tack pawl
135°；The distance of workpiece centre point A to tack pawl pawl end midpoint B is L1, the groove center point C of workpiece centre point A to left recessed pawl
Distance be L2, the distance of the groove center point D of workpiece centre point A to right recessed pawl is L3,
Moved to workpiece centre by the dynamic three-jaw of cubic pore area of scroll chuck with spanner, when tack pawl touches workpiece
When, the pawl end of left recessed pawl and right recessed pawl is exactly tack pawl L1 apart from L2, L3 to workpiece centreTimes, meet just just
The relation of square diagonal and the length of side, therefore three-jaw can simultaneously contact workpiece surface, complete positioning, fasten workpiece, accurate positioning,
It is not required to centering.
The beneficial effects of the utility model are：Fast and accurately positioning, clamping square part, it is adaptable to square zero
The clamping of part turning center endoporus and outer bowlder.Clamping efficiency and product quality can be increased substantially.
Brief description of the drawings
Fig. 1 be according to the utility model proposes three-jaw structural representation.
In figure：1. tack pawl, 2. left recessed pawl, 3. right recessed pawl, 4. workpiece；
A. workpiece centre, B. tack pawl ends midpoint, the groove center point of the right recessed pawl of groove center point C, D. of the left recessed pawls of C.；
L1 is the distance of A, B point-to-point transmission, and L2 is the distance of A, C point-to-point transmission, and L3 is the distance of A, D point-to-point transmission.
Specific embodiment
As shown in figure 1, the angle between left recessed pawl 2 and right recessed pawl 3 is 90 °, left recessed pawl 2 and right recessed pawl 3 and tack pawl 1 it
Between angle be 135 °, left recessed pawl 2, right recessed pawl 3 groove center point to three-jaw centre distance L2, L3 be the L1's of tack pawl 1Times, meet the relation of square diagonal and the length of side.
When workpiece loads three-jaw center, rotate cone pinion by four square holes of scroll chuck with spanner and drive tack pawl
1st, left recessed pawl 2, right recessed pawl 3 are close to center, due to meeting the relation of square diagonal and the length of side, tack between three claws
The pawl transverse plane of pawl 1, left recessed pawl 2 can simultaneously contact the surface of workpiece 4 with 90 ° of groove surfaces, right recessed pawl 3 with 90 ° of groove surfaces, position,
Workpiece 4 is clamped, the self-centering clamping of workpiece 4 is realized.
Claims (1)
1. the Special three-jaw chuck of a kind of clamping square part, scroll chuck is by chuck body, movable jaw and claw driving machine
Structure is constituted, and on scroll chuck below three claw targeting parts, has screw thread mutually to be nibbled with the flat thread at the dish-shaped bevel gear back side
Close, when cone pinion is rotated by four square holes with spanner, dish-shaped pinion rotation, the flat thread at the back side drives three cards simultaneously
Zhao Xiang centers are close to or exit, and are used to clamp the workpiece of different-diameter；Three anti-pawls are changed in the position of three claws, for pacifying
The workpiece that dress is relatively large in diameter；It is characterized in that：Three-jaw is made up of tack pawl (1), left recessed pawl (2), right recessed pawl (3), and tack pawl (1) is
Symmetrically, front end is designed with for clamping workpiece for the three-jaw of common scroll chuck, left recessed pawl (2) and right recessed pawl (3) left and right
Groove, groove is groove, and it is shaped as isosceles right triangle, during the symmetrical center line of triangle is symmetrical with corpus unguis length direction
Heart line is overlapped, and an escape is respectively provided with the groove center point C, the groove center point D of right recessed pawl (3) in left recessed pawl (2)；It is left
Angle between recessed pawl (2) and right recessed pawl (3) is 90 °, and angle is between left recessed pawl (2) and right recessed pawl (3) and tack pawl (1)
135°；The distance of workpiece (4) central point A to tack pawl (1) pawl end midpoint B is L1, workpiece (4) central point A to left recessed pawl (2)
The distance of groove center point C is L2, and the distance of workpiece (4) central point A to the groove center point D of right recessed pawl (3) is L3,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621298777.1U CN206253668U (en) | 2016-11-25 | 2016-11-25 | A kind of Special three-jaw chuck of clamping square part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621298777.1U CN206253668U (en) | 2016-11-25 | 2016-11-25 | A kind of Special three-jaw chuck of clamping square part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206253668U true CN206253668U (en) | 2017-06-16 |
Family
ID=59027616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621298777.1U Active CN206253668U (en) | 2016-11-25 | 2016-11-25 | A kind of Special three-jaw chuck of clamping square part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206253668U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496978A (en) * | 2019-08-06 | 2019-11-26 | 绍兴市子辉机械制造厂 | A kind of three-jaw structure of clamping square workpiece scroll chuck |
| CN113134634A (en) * | 2021-04-23 | 2021-07-20 | 青岛职业技术学院 | Aligning instrument and method for eccentric alignment of four-jaw chuck of lathe |
-
2016
- 2016-11-25 CN CN201621298777.1U patent/CN206253668U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110496978A (en) * | 2019-08-06 | 2019-11-26 | 绍兴市子辉机械制造厂 | A kind of three-jaw structure of clamping square workpiece scroll chuck |
| CN113134634A (en) * | 2021-04-23 | 2021-07-20 | 青岛职业技术学院 | Aligning instrument and method for eccentric alignment of four-jaw chuck of lathe |
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| GR01 | Patent grant |