CN220863257U - Collet capable of being tightly attached to inner hole of knife handle - Google Patents
Collet capable of being tightly attached to inner hole of knife handle Download PDFInfo
- Publication number
- CN220863257U CN220863257U CN202322269136.XU CN202322269136U CN220863257U CN 220863257 U CN220863257 U CN 220863257U CN 202322269136 U CN202322269136 U CN 202322269136U CN 220863257 U CN220863257 U CN 220863257U
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- CN
- China
- Prior art keywords
- collet
- bearing ring
- inner hole
- pressure
- collet chuck
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- 230000009191 jumping Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 6
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
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Abstract
A collet chuck capable of being tightly attached to an inner hole of a tool holder comprises the tool holder and a collet chuck, wherein the tool holder is provided with an inner hole into which the collet chuck can be inserted, a tool mounting hole is formed in the center of the collet chuck, and a plurality of deformation grooves are uniformly distributed on the side wall of the collet chuck in an annular manner; the tool is characterized in that the outer wall of the collet is provided with a front section of pressure-bearing ring surface and a rear section of pressure-bearing ring surface, and when the collet is inserted into the inner hole, the front section of pressure-bearing ring surface and the rear section of pressure-bearing ring surface are attached to the inner hole wall of the tool handle. The axial inclination of the inner hole wall of the cutter handle is 1:100, the axial inclination of the front section pressure-bearing ring surface and the rear section pressure-bearing ring surface is 1:100. the front and rear sections of the outer wall of the collet chuck are attached to the inner hole wall of the tool holder, so that the rigidity is increased, the attaching degree is higher, and due to the fact that the two ends are adopted for clamping, even if a bus is not straight, the bearing ring can be tightly attached to the inner hole wall of the tool holder, when the tool holder rotates at a high speed, the jumping of the collet chuck is greatly reduced, and the collet chuck has the advantages of being simple in structure, low in cost and good in jumping prevention effect.
Description
Technical Field
The utility model relates to machining equipment, in particular to a tool handle and a collet of the machining equipment.
Background
The collet is a locking device for clamping a cutter or a workpiece, is commonly used on drilling and milling machines and machining centers, is a fitting for clamping the cutter by a cutter handle, and is suitable for high-speed cutting and high-efficiency machining. The collet can directly influence the integral runout precision after clamping the cutter, so that the collet with high precision is required to be used for processing. When the current collet chuck is assembled with the tool handle, the side wall of the whole collet chuck is attached to the inner hole wall of the tool handle, and once the bus is not straight, the jump is easy to occur.
The Chinese patent office 2022.11.04 discloses a cutter collet and a cutter handle with the patent number 202220764571.2, which comprises a collet body, wherein the collet body is provided with a jack and a deformation groove, the jack is arranged at the front end of the collet body and extends along the axial direction of the collet body, the deformation groove is arranged on the outer wall surface of the collet body, and the deformation groove is communicated with the jack and extends along the axial direction of the collet body. When the collet body and the processing cutter are inserted into the mounting hole of the cutter handle together in a cold pressing mode, on one hand, the collet body can generate a trace amount of deformation through the deformation groove so that the processing cutter can be inserted into the insertion hole, and the collet body can be inserted into the mounting hole of the cutter handle; on the other hand, after the collet body is inserted into the mounting hole of the tool holder, the collet body can be tightly tensioned in the mounting hole of the tool holder by the force generated by deformation of the deformation groove, and after the machining tool is inserted into the jack, the collet body can clamp the machining tool inserted into the jack by the force generated by deformation of the deformation groove. Such a collet tends to bounce when the bus bar is not straight.
Disclosure of Invention
The utility model aims to overcome the defects and shortcomings of the prior art, and provides the collet chuck which has the advantages of simple structure, low cost and good anti-jump effect and can be tightly attached to the inner hole of the tool handle.
The technical scheme adopted by the utility model for realizing the purposes is as follows: the collet chuck capable of being tightly attached to the inner hole of the tool holder comprises the tool holder and the collet chuck, wherein the inner hole is formed in the tool holder, the collet chuck can be inserted into the inner hole, a tool mounting hole is formed in the center of the collet chuck, and a plurality of deformation grooves are uniformly distributed on the side wall of the collet chuck in an annular mode; the outer wall of the collet chuck is provided with a front section of pressure-bearing ring surface and a rear section of pressure-bearing ring surface, and when the collet chuck is inserted into the inner hole, the front section of pressure-bearing ring surface and the rear section of pressure-bearing ring surface are attached to the inner hole wall of the tool handle.
The axial inclination of the inner hole wall of the cutter handle is 1:100, the axial inclination of the front section pressure-bearing ring surface and the rear section pressure-bearing ring surface is 1:100.
A concave ring surface is arranged between the front section and the rear section of pressure-bearing ring surface, and the diameter of the concave ring surface is smaller than that of the front section and the rear section of pressure-bearing ring surface.
The ratio of the length of the front section of pressure-bearing ring surface to the length of the collet chuck is 1/6-1/3.
The front and rear sections of the outer wall of the collet chuck are attached to the inner hole wall of the tool holder, so that the rigidity is increased, the attaching degree is higher, and due to the fact that the two ends are adopted for clamping, even if a bus is not straight, the bearing ring can be tightly attached to the inner hole wall of the tool holder, when the tool holder rotates at a high speed, the jumping of the collet chuck is greatly reduced, and the collet chuck has the advantages of being simple in structure, low in cost and good in jumping prevention effect.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a cross-sectional view of the structure of the present utility model.
Fig. 3 is an exploded view of the structure of the present utility model.
FIG. 4 is a schematic view of a collet according to the present utility model.
FIG. 5 is a schematic plan view of the collet of the present utility model.
Description of the embodiments
As shown in fig. 1, 2 and 3, the utility model relates to a collet chuck capable of being tightly attached to an inner hole of a tool holder, which comprises the tool holder and the collet chuck, wherein the tool holder is provided with the inner hole, the collet chuck can be inserted into the inner hole, and the axial inclination of the wall of the inner hole of the tool holder is 1:100, the diameter of the inner end is small, the diameter of the outer end is large, the insertion of the collet chuck is facilitated, and meanwhile, the fitting of the inner hole wall of the cutter handle and the outer wall of the collet chuck is also facilitated.
As shown in fig. 4 and 5, a cutter mounting hole is formed in the center of the collet, a plurality of deformation grooves are uniformly distributed on the side wall of the collet in a ring shape, and when the collet is inserted into the inner hole of the tool handle, the deformation grooves can be reduced in a trace manner, so that the side wall of the collet is tightly attached to the inner hole wall of the tool handle. The outer wall of the collet chuck is provided with a front section of pressure-bearing ring surface and a rear section of pressure-bearing ring surface, and when the collet chuck is inserted into the inner hole, the front section of pressure-bearing ring surface and the rear section of pressure-bearing ring surface are attached to the inner hole wall of the tool handle. The axial inclination of the front and rear pressure bearing ring surfaces is also 1:100, the ratio of the length of the two sections of pressure-bearing ring surfaces to the length of the collet chuck is 1/6-1/3, so that even if the bus is not straight, the two sections of pressure-bearing ring surfaces can be tightly attached to the inner hole wall of the cutter handle. A concave ring surface is arranged between the front section and the rear section of pressure-bearing ring surface, and the diameter of the concave ring surface is smaller than that of the front section and the rear section of pressure-bearing ring surface.
The front and rear sections of the outer wall of the collet chuck are attached to the inner hole wall of the tool holder, so that the rigidity is increased, the attaching degree is higher, and due to the fact that the two ends are adopted for clamping, even if a bus is not straight, the bearing ring can be tightly attached to the inner hole wall of the tool holder, when the tool holder rotates at a high speed, the jumping of the collet chuck is greatly reduced, and the collet chuck has the advantages of being simple in structure, low in cost and good in jumping prevention effect.
Claims (4)
1. A collet chuck capable of being tightly attached to an inner hole of a tool holder comprises the tool holder and a collet chuck, wherein the tool holder is provided with an inner hole into which the collet chuck can be inserted, a tool mounting hole is formed in the center of the collet chuck, and a plurality of deformation grooves are uniformly distributed on the side wall of the collet chuck in an annular manner; the tool is characterized in that the outer wall of the collet is provided with a front section of pressure-bearing ring surface and a rear section of pressure-bearing ring surface, and when the collet is inserted into the inner hole, the front section of pressure-bearing ring surface and the rear section of pressure-bearing ring surface are attached to the inner hole wall of the tool handle.
2. The collet as defined in claim 1, wherein the axial slope of the bore wall of the shank is 1:100, the axial inclination of the front section pressure-bearing ring surface and the rear section pressure-bearing ring surface is 1:100.
3. The collet as defined in claim 1 or 2, wherein a concave annular surface is provided between the front and rear pressure annular surfaces, and the diameter of the concave annular surface is smaller than the diameter of the front and rear pressure annular surfaces.
4. The collet as defined in claim 1 or 2, wherein the ratio of the length of the front and rear bearing ring surfaces to the length of the collet is 1/6-1/3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322269136.XU CN220863257U (en) | 2023-08-23 | 2023-08-23 | Collet capable of being tightly attached to inner hole of knife handle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322269136.XU CN220863257U (en) | 2023-08-23 | 2023-08-23 | Collet capable of being tightly attached to inner hole of knife handle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220863257U true CN220863257U (en) | 2024-04-30 |
Family
ID=90817470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322269136.XU Active CN220863257U (en) | 2023-08-23 | 2023-08-23 | Collet capable of being tightly attached to inner hole of knife handle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220863257U (en) |
-
2023
- 2023-08-23 CN CN202322269136.XU patent/CN220863257U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |