CN213034079U - Elastic clamping head - Google Patents
Elastic clamping head Download PDFInfo
- Publication number
- CN213034079U CN213034079U CN202021564734.XU CN202021564734U CN213034079U CN 213034079 U CN213034079 U CN 213034079U CN 202021564734 U CN202021564734 U CN 202021564734U CN 213034079 U CN213034079 U CN 213034079U
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- collet
- arc
- arcuate
- movable
- concave
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Abstract
The utility model provides an elastic clamping head, include: the semi-axis clamping openings of the clamping surfaces of the fixed chuck and the movable chuck are both concave arc surfaces, and the semi-axis clamping openings are characterized in that: and arc-shaped slotted holes are respectively formed on the side surfaces of the fixed chuck and the movable chuck, which are close to the concave arc surface, and an elastically-deformed arc plate is formed between the arc-shaped slotted holes and the concave arc surface. The circle centers of circles where the outer arc surfaces of the arc plates on the fixed chuck and the movable chuck are located are coincided with the circle centers of corresponding circles where the concave arc surfaces are located. The concave arc surface increases the clamping contact area with the clamped shaft, so that the circumferential friction force between the chuck and the clamped shaft is correspondingly increased, the clamping cohesion force is improved, the arc plate has certain elasticity, the unloading effect is realized, the local contact stress is reduced, the cutting circumferential resistance is favorably resisted, and the surface of the clamped shaft is prevented from being extruded and damaged.
Description
Technical Field
The utility model belongs to the technical field of machining, a mechanical clamping device is related to for the centre gripping in the machine part cutting process is fixed, is particularly useful for clamping axle (cover) type part, an elasticity clamping head specifically says so.
Background
In general mechanical cutting and clamping, the most common clamping is that of a bench vice, a fixed chuck and a movable chuck are used for clamping and fixing a workpiece, the clamping mode is convenient to operate and widely applied to various cutting processes, but the clamping mode has large extrusion stress of a clamping surface and is easy to cause surface damage.
How to design an elastic clamping head can reduce the extrusion stress, increase the cohesive force and avoid the surface damage of a workpiece. This is a technical problem to be solved in the art.
SUMMERY OF THE UTILITY MODEL
The utility model provides a solve the above-mentioned problem that prior art exists, provide an elastic clamping head, can reduce extrusion stress, increase cohesive force, avoid workpiece surface damage.
The utility model aims at realizing through the following technical scheme:
a flexible collet comprising: the clamping device comprises a fixed chuck and a movable chuck, wherein semi-axis clamping openings of clamping surfaces of the fixed chuck and the movable chuck are both concave arc surfaces, and the clamping device is characterized in that the side surfaces of the fixed chuck 1 and the movable chuck are close to the concave arc surfaces and are respectively provided with a circular arc-shaped slotted hole, and an arc-shaped plate with elastic deformation is formed between the circular arc-shaped slotted hole and the concave arc surfaces.
The improvement of the technical scheme is as follows: the circle centers of circles where the outer arc surfaces of the arc plates on the fixed chuck and the movable chuck are located are coincident with the circle centers of circles where the corresponding concave arc surfaces are located.
The technical scheme is further improved as follows: the arc-shaped plate is uniform in thickness, and the thickness of the arc-shaped plate is 4-6 mm.
The technical scheme is further improved as follows: the arc length of the arc-shaped slotted hole is 30-40mm, and the slot width K of the arc-shaped slotted hole is 3-5 mm.
The technical scheme is further improved as follows: the arc lengths of the concave arc surfaces on the fixed chuck and the movable chuck are both larger than the arc lengths of the corresponding arc-shaped slotted holes.
The technical scheme is further improved as follows: the inner concave arc surface on the fixed chuck and the inner concave arc surface on the movable chuck are symmetrically arranged, the arc-shaped groove hole on the fixed chuck and the arc-shaped groove hole on the movable chuck are symmetrically arranged, and the radius of the circle where the inner concave arc surfaces on the fixed chuck and the movable chuck are located is larger than that of the clamped shaft.
The utility model has the advantages that:
the utility model discloses the arc of elastic deformation that forms between the arc slotted hole of the fixed chuck in the flexible dress chuck and the circular arc slotted hole of removing the chuck side to the indent arc surface has the space of deformation, can produce elastic deformation when the centre gripping is by centre gripping axle (cover). Therefore, the concave arc surface of the fixed chuck and the movable chuck increases the clamping contact area with the clamped shaft in the clamping process, so that the circumferential friction force between the elastic chuck and the clamped shaft (sleeve) is correspondingly increased, and the clamping cohesion is improved. The arc-shaped slot hole plays an unloading role, reduces local contact stress, is beneficial to resisting the circumferential resistance of cutting, and can avoid being extruded and damaged by the surface of the clamping shaft (sleeve). The structure is simple, the processing and the manufacture are convenient, and the use is reliable.
Drawings
Fig. 1 is a schematic structural view of the usage state of the elastic collet of the present invention.
The numbering in the figure is: 1-fixed chuck, 2-movable chuck, 3-arc groove, 4-arc plate and 5-clamped shaft.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the present invention provides an embodiment of a flexible collet, including a fixed collet 1 and a movable collet 2, the semi-axis clamping opening of the clamping surfaces of the fixed collet 1 and the movable collet 2 is an inward concave arc surface. The side surfaces of the fixed chuck 1 and the movable chuck 2 are respectively provided with a circular arc-shaped slotted hole 3 near the concave arc surface, and an elastically deformed arc-shaped plate 4 is formed between the circular arc-shaped slotted hole 3 and the concave arc surface of the half shaft clamping opening.
Furthermore, the circle centers of the circles of the outer arc surfaces of the arc plates 4 on the fixed chuck 1 and the movable chuck 2 are superposed with the circle centers of the corresponding circles of the concave arc surfaces.
Preferably, the thickness of the arc-shaped plate 4 is uniform, and the thickness of the arc-shaped plate 4 ranges from 4 mm to 6 mm. The arc length (b to c in figure 1) of the arc-shaped slotted hole 3 is 30-40mm, and the slot width K of the arc-shaped slotted hole 3 is 3-5 mm. The radius R2 of the circle where the concave arc surface on the fixed chuck 1 and the movable chuck 2 is located is about as follows: 30mm, the radius R3 of the circle on which the outer side of the arc-shaped plate 4 is located is about: 35 mm.
Still further, the arc lengths of the concave arc surfaces on the fixed chuck 1 and the movable chuck 2 are both larger than the arc lengths of the corresponding arc-shaped slot holes 3 (b to c in fig. 1).
Still further, the concave arc surface on the fixed chuck 1 and the concave arc surface on the movable chuck 2 are symmetrically arranged, the arc-shaped slot 3 on the fixed chuck 1 and the arc-shaped slot 3 on the movable chuck 2 are symmetrically arranged, and the radius R2 of the circle where the concave arc surfaces on the fixed chuck 1 and the movable chuck 2 are located is larger than the radius R1 of the clamped shaft.
When using the utility model discloses a during flexible mounting chuck, will be by 5 centre gripping of centre gripping axle (or sleeve spindle) between fixed chuck 1 and removal chuck 2, apply the power of F direction on removing chuck 2, because fixed chuck 1 and the last indent arc surface of removing chuck 2 increased with by the area of contact of centre gripping axle 5, make flexible mounting chuck and the also corresponding increase of circumference frictional force by centre gripping axle 5, improved the cohesion of centre gripping. The arc slotted hole 3 plays an unloading role, reduces local contact stress, is beneficial to resisting the circumferential resistance of cutting and avoids being extruded and damaged by the surface of the clamping shaft 5.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art should also belong to the protection scope of the present invention in the spirit of the present invention and the changes, modifications, additions or substitutions made therein.
Claims (10)
1. A flexible collet comprising: the semi-axis clamping opening of the clamping surface of the fixed chuck and the clamping surface of the movable chuck are both concave arc surfaces, and the semi-axis clamping opening is characterized in that the side surfaces of the fixed chuck (1) and the movable chuck are close to the concave arc surfaces and are respectively provided with a circular arc groove hole, and an arc plate with elastic deformation is formed between the circular arc groove hole and the concave arc surfaces.
2. The flexible collet according to claim 1, wherein the centers of the circles of the outer arc surfaces of the arc plates on the fixed collet and the movable collet are coincident with the centers of the corresponding circles of the inner concave arc surfaces.
3. A flexible collet according to claim 1 or claim 2 wherein said arcuate plate is of uniform thickness and said arcuate plate is 4 to 6mm thick.
4. A flexible collet according to claim 1 or 2 wherein said circular arc shaped slot has an arc length of 30-40mm and said circular arc shaped slot has a slot width K of 3-5 mm.
5. The flexible collet according to claim 3 wherein said circular arc shaped slot has an arc length of 30-40mm and said circular arc shaped slot has a slot width K of 3-5 mm.
6. A flexible mounting clip according to claim 1 or 2, wherein the arcuate length of each of said concave arcuate surfaces on said fixed clip and said movable clip is greater than the corresponding arcuate length of said arcuate slot.
7. A flexible collet according to claim 5 wherein the arcuate length of each of said concave arcuate surfaces on said fixed collet and said movable collet is greater than the corresponding arcuate length of said arcuate slot.
8. A flexible collet according to claim 1 or 2 wherein the concave arcuate surface of the fixed collet is symmetrically disposed with respect to the concave arcuate surface of the movable collet, the arcuate slot of the fixed collet is symmetrically disposed with respect to the arcuate slot of the movable collet, and the radius of the circle on which the concave arcuate surfaces of the fixed collet and the movable collet are disposed is greater than the radius of the shaft to be gripped.
9. A flexible collet according to claim 3 wherein the concave arcuate surface of the fixed collet is symmetrically disposed with respect to the concave arcuate surface of the movable collet, the arcuate slot of the fixed collet is symmetrically disposed with respect to the arcuate slot of the movable collet, and the radius of the circle on which the concave arcuate surfaces of the fixed collet and the movable collet are disposed is greater than the radius of the shaft to be gripped.
10. The flexible collet according to claim 7 wherein the concave arcuate surface of the fixed collet is symmetrically disposed with respect to the concave arcuate surface of the movable collet, the arcuate slot of the fixed collet is symmetrically disposed with respect to the arcuate slot of the movable collet, and the radius of the circle on which the concave arcuate surfaces of the fixed collet and the movable collet are disposed is greater than the radius of the shaft to be clamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021564734.XU CN213034079U (en) | 2020-07-31 | 2020-07-31 | Elastic clamping head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021564734.XU CN213034079U (en) | 2020-07-31 | 2020-07-31 | Elastic clamping head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213034079U true CN213034079U (en) | 2021-04-23 |
Family
ID=75529652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021564734.XU Active CN213034079U (en) | 2020-07-31 | 2020-07-31 | Elastic clamping head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213034079U (en) |
-
2020
- 2020-07-31 CN CN202021564734.XU patent/CN213034079U/en active Active
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