CN210280718U - Damping-adjustable boring bar damping structure - Google Patents
Damping-adjustable boring bar damping structure Download PDFInfo
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- CN210280718U CN210280718U CN201921131888.7U CN201921131888U CN210280718U CN 210280718 U CN210280718 U CN 210280718U CN 201921131888 U CN201921131888 U CN 201921131888U CN 210280718 U CN210280718 U CN 210280718U
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- boring bar
- supporting block
- tensioning sleeve
- damping
- boring
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- 238000013016 damping Methods 0.000 title claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 21
- 230000035939 shock Effects 0.000 claims description 15
- 239000007769 metal material Substances 0.000 claims description 3
- 229910052755 nonmetal Inorganic materials 0.000 claims description 3
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 8
- 238000012545 processing Methods 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009931 harmful effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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Abstract
The utility model relates to a damping adjustable boring bar shock-absorbing structure, which belongs to the technical field of shock-absorbing devices and comprises a boring bar with a hollow structure and a damping shock-absorbing structure arranged in the boring bar, wherein the damping shock-absorbing structure comprises a screw rod, a balancing weight, a tensioning sleeve, a spring, a nut and a supporting block for opening the tensioning sleeve; two ends of the balancing weight are symmetrically provided with a supporting block, and the balancing weight and the supporting block are connected together through a screw and a nut; the balancing weight, the supporting block, the screw and the boring rod are coaxial, and the balancing weight is in clearance fit with the boring rod; a spring is arranged between the balancing weight and the supporting block, a tensioning sleeve is sleeved outside the supporting block, the outer circular surface of the supporting block is a conical surface, a damping material is arranged between the outer circular surface of the tensioning sleeve and the inner wall of the boring rod, and the tensioning sleeve is expanded by the supporting block so as to tightly press and attach the damping material to the inner wall of the boring rod. The utility model discloses can reduce the vibrations of boring bar system in its inside damping shock-absorbing structure with the energy transfer of boring bar system, help improving boring bar stability, do benefit to and improve hole surface quality.
Description
Technical Field
The utility model relates to a damping device technical field especially relates to a damping adjustable boring bar shock-absorbing structure.
Background
In the boring processing process, the processing precision and stability of the boring bar system depend on the rigidity of the structure and the influence of vibration on the boring bar system in the cutting process to a great extent, and the insufficient rigidity and the vibration limit the cutting efficiency of the boring bar system in the processing process, and vibration lines can be left on the surface of a processed workpiece to influence the processing precision. The cutting chatter vibration is a very strong relative vibration generated between a cutter and a workpiece in the metal cutting process, the generation reason, the generation rule and the development rule of the cutting chatter vibration are intrinsically connected with the cutting process and the dynamic characteristics of a metal cutting system, and the cutting chatter vibration has a plurality of influencing factors and is a very complex mechanical vibration phenomenon.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a damping adjustable boring bar shock-absorbing structure, harmful effects such as vibrations that produce in the available absorption course of working help keeping the stability of processing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a damping adjustable boring bar damping structure comprises a boring bar with a hollow structure and a damping structure arranged in the boring bar, wherein the damping structure comprises a screw rod, a balancing weight, a tensioning sleeve, a spring, a nut and a supporting block for expanding the tensioning sleeve;
two ends of the balancing weight are symmetrically provided with a supporting block, and the balancing weight and the supporting block are connected together through a screw and a nut; the balancing weight, the supporting block, the screw and the boring rod are coaxial, and the balancing weight is in clearance fit with the boring rod;
a spring is arranged between the balancing weight and the supporting block, a tensioning sleeve is sleeved outside the supporting block, and the maximum outer diameter of the supporting block is at least larger than the inner diameter of the tensioning sleeve; the outer circle surface of the supporting block is a conical surface, a damping material is arranged between the outer circle surface of the tensioning sleeve and the inner wall of the boring rod, and the tensioning sleeve is propped open by the supporting block so as to tightly press and attach the damping material to the inner wall of the boring rod.
Preferably, the minimum outer diameter of the support block is equal to the inner diameter of the tensioning sleeve.
Furthermore, at least two seams are arranged on the tensioning sleeve at intervals along the circumferential direction, and one end of each seam penetrates through one end of the tensioning sleeve.
Furthermore, two adjacent seams respectively run through one end of the tensioning sleeve.
Preferably, the length of the slot is greater than half the length of the tensioning sleeve.
Furthermore, the outer circular surface of the tensioning sleeve is provided with an annular groove for installing damping materials, the damping materials are installed in the annular groove, and the thickness of the damping materials is larger than the depth of the annular groove.
Furthermore, the radial threaded holes are formed in the balancing weight, a plurality of threaded holes are formed in the circumferential direction at equal intervals, screws are installed in the threaded holes, and the inner ends of the screws are pressed on the screw rods.
Preferably, the spring is a belleville spring.
Furthermore, a boring bar head is arranged at one end of the boring bar, the boring bar head and the nut are positioned at the same end, and the boring bar head is in threaded connection with the boring bar.
Wherein, the other end of the boring bar head is provided with an end cover which is in threaded connection with the boring bar head.
Preferably, the tensioning sleeve is made of a non-metal material.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model can transfer the energy of the boring bar system to the internal damping shock absorption structure, and absorb the harmful effects of the shock and the like generated in the processing process through the internal damping shock absorption structure, thereby reducing the shock of the boring bar system, being beneficial to improving the stability of the boring bar and being beneficial to improving the surface quality of the inner hole; just the utility model discloses centering precision is higher to the locking degree of adjustable boring bar direction, the control accuracy of being convenient for is favorable to production. Meanwhile, the boring bar damping structure is very convenient to disassemble and maintain.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of the tensioning sleeve;
in the figure: 1-end cover, 2-boring bar, 3-screw, 4-supporting block, 5-spring, 6-balancing weight, 7-screw, 8-tensioning sleeve, 9-boring bar head, 10-nut, 11-damping material, 81-ring groove and 82-seam.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a damping adjustable boring bar shock-absorbing structure, including hollow structure's boring bar 2 with locate the damping shock-absorbing structure in the boring bar 2, damping shock-absorbing structure includes screw rod 3, balancing weight 6, tight cover 8, spring 5, nut 10 and is used for strutting the supporting shoe 4 of tight cover 8 that rises.
Two ends of the balancing weight 6 are symmetrically provided with a supporting block 4, and the balancing weight 6 and the supporting block 4 are connected together through a screw rod 3 and a nut 10; the balancing weight 6, the supporting block 4, the screw 3 and the boring rod 2 are coaxial, and the balancing weight 6 is in clearance fit with the boring rod 2; a spring 5 is arranged between the balancing weight 6 and the supporting block 4, and the spring 5 is a belleville spring in the embodiment.
A tensioning sleeve 8 is sleeved outside the supporting block 4, the outer circular surface of the supporting block 4 is a conical surface, and the diameter of the conical surface is gradually increased from inside to outside; the maximum outer diameter of the support block 4 is at least greater than the inner diameter of the tensioning sleeve 8, and preferably the minimum outer diameter of the support block 4 is equal to the inner diameter of the tensioning sleeve 8.
As shown in fig. 2, at least two slits 82 are provided on the tensioning sleeve 8 at equal intervals along the circumferential direction, and one end of each slit 82 penetrates through one end of the tensioning sleeve 8. The number of slits 82 can be 3, 4 or more, as desired. In the present embodiment, there are 12 slits 82, and two adjacent slits 82 respectively penetrate through one end of the tensioning sleeve 8. The slots 82 are axially arranged, and the length of the slots 82 is greater than half of the length of the tensioning sleeve 8. The tensioning sleeve 8 is made of non-metal materials.
In order to facilitate the installation of the damping material 11, an annular groove 81 for installing the damping material 11 is formed in the outer circumferential surface of the tensioning sleeve 8, the damping material 11 is installed in the annular groove 81, and the thickness of the damping material 11 is larger than the depth of the annular groove 81.
Since the screw 3 is relatively long, the screw 3 is rotated in order to prevent the nut 10 from being screwed. Threaded holes are radially formed in the balancing weight 6, a plurality of threaded holes are formed in the circumferential direction at equal intervals, screws 7 are installed in the threaded holes, and the inner ends of the screws 7 are pressed on the screw rods 3. The screw rod 3 is fixed with the balancing weight 6 through the screw 7, so that the screw rod 3 can be prevented from rotating when the nut 10 is screwed.
A boring bar head 9 is installed at one end of the boring bar 2, the boring bar head 9 and a nut 10 are located at the same end, and the boring bar head 9 is in threaded connection with the boring bar 2. The other end of the boring bar head 9 is provided with an end cover 1, and the end cover 1 is in threaded connection with the boring bar head 9.
During installation, the nut 10 is screwed, so that the supporting block 4 moves axially to extrude and expand the tension sleeve 8, the tension sleeve 8 deforms to drive the damping material 11, and the damping material 11 is tightly clamped between the tension sleeve 8 and the boring rod 2, so that the whole damping shock absorption structure is tightly attached to the inner wall of the boring rod 2, the energy of the boring rod system is transferred to the damping shock absorption structure inside the boring rod system, and the vibration of the boring rod system is reduced.
The nut 10 can be adjusted by dismounting the boring head 9, the nut 10 is unscrewed, the supporting block 4 axially moves outwards under the action of the spring 5, and the tensioning sleeve 8 recovers deformation, so that the whole damping structure can be conveniently taken out of the boring rod 2, and the maintenance is convenient.
When the frequency of the external excitation is close to the frequency of the boring bar system, resonance can be avoided by adjusting the mass of the counterweight 6. The influence of the change of the damping on the frequency is large, and when the resonance is inevitable, the amplitude is reduced by adjusting the damping, so that the vibration is reduced.
Of course, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and that such changes and modifications are intended to be included within the scope of the appended claims.
Claims (10)
1. The utility model provides a damping adjustable boring bar shock-absorbing structure which characterized in that: the damping device comprises a boring rod with a hollow structure and a damping structure arranged in the boring rod, wherein the damping structure comprises a screw rod, a balancing weight, a tensioning sleeve, a spring, a nut and a supporting block for opening the tensioning sleeve;
two ends of the balancing weight are symmetrically provided with a supporting block, and the balancing weight and the supporting block are connected together through a screw and a nut; the balancing weight, the supporting block, the screw and the boring rod are coaxial, and the balancing weight is in clearance fit with the boring rod;
a spring is arranged between the balancing weight and the supporting block, a tensioning sleeve is sleeved outside the supporting block, the outer circular surface of the supporting block is a conical surface, the diameter of the conical surface is gradually increased from inside to outside, a damping material is arranged between the outer circular surface of the tensioning sleeve and the inner wall of the boring rod, and the tensioning sleeve is tensioned by the supporting block so as to tightly press and attach the damping material to the inner wall of the boring rod.
2. The boring bar shock absorbing structure as set forth in claim 1, wherein: the minimum outer diameter of the supporting block is equal to the inner diameter of the tensioning sleeve.
3. The boring bar shock absorbing structure as set forth in claim 1 or 2, wherein: at least two seams are arranged on the tensioning sleeve at intervals along the circumferential direction, and one end of each seam penetrates through one end of the tensioning sleeve.
4. The boring bar shock absorbing structure as set forth in claim 3, wherein: two adjacent seams respectively run through one end of the tensioning sleeve.
5. The boring bar shock absorbing structure as set forth in claim 3, wherein: the seam is axially arranged, and the length of the seam is greater than half of the length of the tensioning sleeve.
6. The boring bar shock absorbing structure as set forth in claim 1, wherein: the outer circular surface of the tensioning sleeve is provided with an annular groove for installing damping materials, the damping materials are arranged in the annular groove, and the thickness of the damping materials is larger than the depth of the annular groove.
7. The boring bar shock absorbing structure as set forth in claim 1, wherein: the balancing weight is provided with a plurality of threaded holes in the radial direction, the threaded holes are arranged at equal intervals in the circumferential direction, screws are arranged in the threaded holes, and the inner ends of the screws are pressed on the screw rods.
8. The boring bar shock absorbing structure as set forth in claim 1, wherein: the spring is a belleville spring.
9. The boring bar shock absorbing structure as set forth in claim 1, wherein: one end of the boring bar is provided with a boring bar head, the boring bar head and the nut are positioned at the same end, and the boring bar head is in threaded connection with the boring bar; the other end of the boring bar head is provided with an end cover which is in threaded connection with the boring bar head.
10. The boring bar shock absorbing structure as set forth in claim 1, wherein: the tensioning sleeve is made of non-metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921131888.7U CN210280718U (en) | 2019-07-18 | 2019-07-18 | Damping-adjustable boring bar damping structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921131888.7U CN210280718U (en) | 2019-07-18 | 2019-07-18 | Damping-adjustable boring bar damping structure |
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| Publication Number | Publication Date |
|---|---|
| CN210280718U true CN210280718U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921131888.7U Active CN210280718U (en) | 2019-07-18 | 2019-07-18 | Damping-adjustable boring bar damping structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145879A (en) * | 2021-04-21 | 2021-07-23 | 哈尔滨理工大学 | Damping-adjustable vibration attenuation boring bar based on excitation coil |
| CN114535628A (en) * | 2022-04-25 | 2022-05-27 | 成都市鸿侠科技有限责任公司 | Cutter for machining slide rail based on flap and machining method of cutter |
-
2019
- 2019-07-18 CN CN201921131888.7U patent/CN210280718U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113145879A (en) * | 2021-04-21 | 2021-07-23 | 哈尔滨理工大学 | Damping-adjustable vibration attenuation boring bar based on excitation coil |
| CN114535628A (en) * | 2022-04-25 | 2022-05-27 | 成都市鸿侠科技有限责任公司 | Cutter for machining slide rail based on flap and machining method of cutter |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200930 Address after: No.24, north section of jing'er Road, Xining Biological Park, Qinghai Province, 810000 Patentee after: Qinghai Qingzhong Machine Tool Manufacturing Co.,Ltd. Address before: 810000 No. 1 Sports Road, Datong County, Xining City, Qinghai Province Patentee before: QINGHAI HUADING HEAVY MACHINE TOOL Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240424 Address after: 741024 No. 7 Runtian Road, Shetang Industrial Park, Maiji District, Tianshui City, Gansu Province Patentee after: Tianshui Xinghuo Qingzhong Machine Tool Co.,Ltd. Country or region after: China Address before: 810000 No. 24, North Section of Jinger Road, Biological Park, Xining City, Qinghai Province Patentee before: Qinghai Qingzhong Machine Tool Manufacturing Co.,Ltd. Country or region before: China |