CN213317764U - Reducing shock attenuation cutter arbor - Google Patents
Reducing shock attenuation cutter arbor Download PDFInfo
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- CN213317764U CN213317764U CN202021198420.2U CN202021198420U CN213317764U CN 213317764 U CN213317764 U CN 213317764U CN 202021198420 U CN202021198420 U CN 202021198420U CN 213317764 U CN213317764 U CN 213317764U
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Abstract
The utility model provides a reducing shock-absorbing cutter bar, which belongs to the technical field of processing and is used for solving the shock absorption of cutter bars with large length-diameter ratio and compensating the limitation of the length-diameter ratio of the cutter bars; the cutter body adopts a reducing structure which becomes thicker from the top end to the bottom end in sequence; a damping body and an adjusting plug are sequentially arranged in a cutter body round hole at the rear part of the connecting body; the outer wall of the middle section of the adjusting plug is provided with a wedge-shaped surface, and the front end of the screw is in contact fit with the wedge-shaped surface of the adjusting plug and the conical surface of the screw in a manner that the conical top is pressed against the inclined surface; the depth of the screw is different, and the left and right positions of the adjusting plug in the axial direction are different. The cutter bar can not vibrate or shake in the machining process, and the surface machining quality of the workpiece is guaranteed.
Description
Technical Field
The utility model belongs to the technical field of the processing, a reducing shock attenuation cutter arbor for processing body internal diameter is related to.
Background
The processing of the inner diameter of the elastomer is one of the key processing procedures of our company. In the course of working, because the body internal diameter depth is darker, receives the restriction of cutter arbor draw ratio, causes the internal diameter cutter arbor vibration serious easily in the course of working, has caused great influence for production and processing. Therefore, the design of the damping cutter bar for processing the inner diameter of the projectile body makes up the processing deficiency in the field.
The length-diameter ratio of the cutter bar of a conventional common inner-hole turning tool is generally below 4, and if the cutter bar is too long in overhang, the rigidity and the strength of the cutter bar are greatly reduced, and large vibration is easy to occur.
The length-diameter ratio of the common equal-diameter damping cutter rod can reach 6, and the equal-diameter damping cutter rod with the length-diameter ratio exceeding 6 still has the conditions of vibration, workpiece surface corrugation, roughness reduction and the like in the machining process.
SUMMERY OF THE UTILITY MODEL
To the problem that exists, according to the characteristics and the structure of product processing, the utility model provides a reducing shock attenuation cutter arbor, a reducing shock attenuation cutter arbor for processing the projectile body internal diameter promptly for solve the shock attenuation of the cutter arbor that the draw ratio is big, the design of shock attenuation cutter arbor can compensate the not enough of cutter arbor draw ratio restriction, general draw ratio can reach more than 8.
The technical scheme of the utility model is that: a reducing damping cutter bar comprises a cutter body, an adjusting plug, a rubber ring, a damping body, a connecting body, a small cutter head and a screw; the peripheral structure of the cutter body is a variable diameter cylinder, and the cutter body adopts a variable diameter structure which is sequentially thickened from the top end to the bottom end; a small round hole is formed in the front end of the connecting body, a rod at the rear end of the small tool bit is inserted into the small round hole, a round hole is formed in the front end of the cutter body, the rear end of the connecting body is inserted into the round hole of the cutter body, and a damping body and an adjusting plug are sequentially arranged in the round hole of the cutter body at the rear part of the connecting body; the diameter of the rear end part of the shock absorption body is smaller than that of the front end, the small-diameter periphery of the rear end is sleeved with a rubber ring, and the rubber ring is abutted between the end face of the shock absorption body and the end face of the adjusting plug; a gap is formed between the rear surface of the shock absorption body and the front end surface of the adjusting plug; the outer wall of the middle section of the adjusting plug is provided with a wedge-shaped surface, the front end of the screw is supported on the inclined surface in a conical manner, and the wedge-shaped surface of the adjusting plug is in contact fit with the conical surface of the screw; the depth of the screw is different, and the left and right positions of the adjusting plug in the axial direction are different.
Further, the shock absorber is in contact connection with a connecting body at the front end of the cutter bar.
Further, the rubber ring is abutted between the connecting body and the end face of the damping body.
Furthermore, after the installation, the rubber ring is in a compressed state, and the axial direction of the adjusting plug can overcome the elastic force of the rubber ring to move.
Further, the rubber ring can generate elastic deformation under the axial acting force and act on the periphery of the shock absorption body in the radial direction.
Further, the shock absorber is made of tungsten alloy, and the specific gravity of the shock absorber is greater than 17.
Furthermore, the connecting body is tightly fastened and pre-tightened by a lower end pin after being matched and assembled with the cutter body.
Further, the cutter body material is 40CR, the length is 290mm, the diameter of the top end of the cutter rod is 34mm, and the diameter of the bottom end of the cutter rod is 44 mm.
Furthermore, an included angle of 30 degrees is formed between the wedge-shaped surface of the adjusting plug and the vertical surface.
Furthermore, if the screw is deeper, the position of the adjusting plug is more left.
The technical effects of the utility model:
through the design of reducing shock attenuation cutter arbor, the major diameter ratio of cutter arbor has obtained the improvement of very big degree, not only can process the darker body of body internal diameter, and the cutter arbor can not produce the vibration in the course of working in addition, quivers the circumstances such as sword, and the surface finish quality of work piece has obtained the assurance, and the machining efficiency of product has obtained obvious promotion.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
1. Cutter body, 2, adjusting plug, 3, rubber ring, 4, shock absorption body, 5, connecting body, 6, screw, 7, pin, 8, screw, 9 and small cutter head
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
A reducing damping cutter bar comprises a cutter body 1, an adjusting plug 2, a rubber ring 3, a damping body 4, a connecting body 5, a small cutter head 9, a standard screw and a screw and the like. The concrete structure is as follows:
the main structure of the cutter bar is a variable diameter cylinder, and the cutter body 1 adopts a variable diameter structure which is sequentially thickened from the top end to the bottom end.
The connecting body 5 is internally provided with a small round hole, a rod at the rear end of the small tool bit is inserted into the small round hole, the front end of the cutter body is provided with a round hole, and the rear end of the connecting body is inserted into the round hole of the cutter body.
The circular hole of the cutter body is a stepped hole, and the damping body 4 and the adjusting plug 2 are arranged in the circular hole of the cutter body at the rear part of the connecting body;
the diameter of the two end parts of the damping body 4 is smaller than the diameter of the middle part, the rubber rings 3 are sleeved on the small-diameter peripheries of the two end parts, the rubber ring 3 at the front end is propped between the connecting body 5 and the end surface of the damping body 4, and the rubber ring 3 at the rear end is propped between the end surface of the damping body 4 and the front end surface of the adjusting plug 2.
The adjusting plug 2 is connected with the damping body 4 through the rubber ring 3, the relative displacement of the adjusting plug 2 is changed through the pretightening force of the adjusting screw 8, the pretightening force and the fit clearance among the adjusting plug 2, the rubber ring 3 and the damping body 4 are changed, and then the damping effect of the whole cutter body is adjusted.
After the installation, rubber ring 3 is in compression state, the adjustment is stifled 2 axial and can be overcome the elasticity removal of rubber ring 3, and the adjustment is stifled 2 middle section outer walls and has the wedge face (become 30 degrees contained angles with vertical face), and on the inclined plane with screw medial extremity top, through the degree of depth that the screw got into, the axial displacement of adjustment stifled 2 to the realization sees the pretightning force between real question and the rubber ring 3. The rubber ring 3 expands and reduces the inner diameter after being compressed, and radial compression of the shock absorption body 4 is realized. The depth of screw entering is different, and the left and right positions of the adjusting plug 2 in the axial direction are different, for example: the screw is deeper, and the position of the adjusting plug 2 is more left. The adjusting plug 2 and the adjusting screw 8 are in contact fit through the wedge-shaped surface, when the adjusting screw 8 is adjusted, the adjusting plug 2 is extruded by the wedge-shaped surface to generate axial displacement, axial force acts on the end surface of the rubber ring 3, elastic deformation is generated under the axial acting force of the rubber ring 3 to act on the periphery and the end part of the damping body 4, and the damping body 4 generates axial displacement and radial displacement.
The material of the shock absorber 4 is tungsten alloy, the specific gravity is greater than 17, and the shock absorber has a good shock absorption effect and can well eliminate the damping of a shock absorber.
The shock absorber 4 is connected with the connector 5 at the front end of the cutter bar 1 in a contact mode, and the connector 5 is tightly fastened and pre-tightened by a lower end pin after being matched and assembled with the cutter body 1, so that the connector is prevented from displacing.
The small bit is installed in the connector, and the small bit can produce the vibration in the course of working, and the vibration transmits the connector through the small bit, because the shock attenuation body contacts with the connector, can eliminate the vibration that causes from the small bit. Through the adjusting screw of cutter body bottom, can finely tune the shock attenuation effect of shock attenuation body, avoid the resonant frequency of whole cutter arbor, and then reach best shock attenuation effect.
Further, taking one of the product shock absorption cutter bars as an example, according to the structural characteristics of the product, the main structure of the cutter bar is a variable diameter cylinder, the material is 40CR, the length is 290mm, the diameter of the top end of the cutter bar is 34mm, and the diameter of the bottom end of the cutter bar is 44 mm. Because the cutter body 1 adopts the reducing structure that becomes thick in proper order from the top to the bottom, the rigidity of its cutter body has obtained the improvement to a great extent.
Claims (10)
1. A reducing damping cutter bar is characterized by comprising a cutter body (1), an adjusting plug (2), a rubber ring (3), a damping body (4), a connecting body (5), a small cutter head (9) and a screw (8);
the peripheral structure of the cutter body is a variable diameter cylinder, and the cutter body adopts a variable diameter structure which is sequentially thickened from the top end to the bottom end;
a small round hole is formed in the front end of the connecting body (5), a rod at the rear end of the small tool bit is inserted into the small round hole, a round hole is formed in the front end of the cutter body, the rear end of the connecting body is inserted into the round hole of the cutter body, and a damping body (4) and an adjusting plug (2) are sequentially arranged in the round hole of the cutter body at the rear part of the connecting body;
the diameter of the rear end part of the shock absorption body (4) is smaller than that of the front end, the rubber ring (3) is sleeved on the periphery of the rear end with the small diameter, and the rubber ring (3) is abutted between the end face of the shock absorption body (4) and the front end face of the adjusting plug (2); a gap is arranged between the rear surface of the shock absorption body (4) and the front end surface of the adjusting plug (2); the outer wall of the middle section of the adjusting plug (2) is provided with a wedge-shaped surface, the front end of the screw (8) is supported on the inclined surface in a conical manner, and the wedge-shaped surface of the adjusting plug (2) is in contact fit with the conical surface of the screw (8); the depth of the screw is different, and the left and right positions of the adjusting plug (2) in the axial direction are different.
2. The reducing vibration-damping cutter bar as claimed in claim 1, characterized in that the vibration-damping body (4) is in contact connection with the connecting body (5) at the front end of the cutter body (1).
3. The reducing damping cutter bar according to claim 1, characterized in that the rubber ring (3) is pressed between the connecting body (5) and the end face of the damping body (4).
4. The reducing vibration-damping cutter bar as claimed in claim 1, wherein after installation, the rubber ring (3) is in a compressed state, and the axial direction of the adjusting plug can overcome the elastic force of the rubber ring to move.
5. The reducing damping cutter bar as claimed in claim 1, wherein the rubber ring (3) can be elastically deformed under the action of axial force and radially acts on the periphery of the damping body.
6. The reducing damping cutter bar as claimed in claim 1, characterized in that the damping body (4) is made of tungsten alloy and has a specific gravity greater than 17.
7. The reducing vibration-absorbing cutter bar as claimed in claim 1, wherein the connecting body is tightly pre-tightened by a lower end pin after being matched and assembled with the cutter body.
8. The reducing vibration absorbing cutter bar of claim 1, wherein the cutter body material is 40CR and has a length of 290mm, the diameter of the top end of the cutter bar is 34mm, and the diameter of the bottom end of the cutter bar is 44 mm.
9. The reducing vibration-damping cutter bar as claimed in claim 1, wherein the wedge-shaped surface of the adjusting plug forms an included angle of 30 degrees with the vertical surface.
10. The reducing vibration-damping cutter bar as claimed in claim 1, characterized in that the screw is deeper than the left side of the position of the adjusting plug (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021198420.2U CN213317764U (en) | 2020-06-24 | 2020-06-24 | Reducing shock attenuation cutter arbor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021198420.2U CN213317764U (en) | 2020-06-24 | 2020-06-24 | Reducing shock attenuation cutter arbor |
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| CN213317764U true CN213317764U (en) | 2021-06-01 |
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| CN202021198420.2U Active CN213317764U (en) | 2020-06-24 | 2020-06-24 | Reducing shock attenuation cutter arbor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114260476A (en) * | 2021-11-29 | 2022-04-01 | 辽沈工业集团有限公司 | Bending vibration-damping cutter bar |
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2020
- 2020-06-24 CN CN202021198420.2U patent/CN213317764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114260476A (en) * | 2021-11-29 | 2022-04-01 | 辽沈工业集团有限公司 | Bending vibration-damping cutter bar |
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