CN113752099A - Ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation - Google Patents
Ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation Download PDFInfo
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- CN113752099A CN113752099A CN202110430084.2A CN202110430084A CN113752099A CN 113752099 A CN113752099 A CN 113752099A CN 202110430084 A CN202110430084 A CN 202110430084A CN 113752099 A CN113752099 A CN 113752099A
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- abrasive belt
- adapter plate
- compensation
- wheel
- amplitude
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
- B24B1/04—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B21/00—Machines or devices using grinding or polishing belts; Accessories therefor
- B24B21/18—Accessories
- B24B21/20—Accessories for controlling or adjusting the tracking or the tension of the grinding belt
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/007—Weight compensation; Temperature compensation; Vibration damping
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention discloses an ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation, which comprises a driving mechanism, an adapter plate, a tensioning mechanism, an ultrasonic vibration system, an ultrasonic system fixing device, an amplitude compensator, a contact wheel and an abrasive belt. The adapter plate is connected with the motion part of the grinding machine, the front panel is fixed with an ultrasonic vibration abrasive belt grinding head, the driving mechanism drives the abrasive belt to rotate, and the tensioning mechanism tensions the abrasive belt; the ultrasonic vibration system is fixed on the adapter plate through a flange plate, and the tail end of the amplitude transformer is connected with the amplitude compensator; the compensation rod in the amplitude compensator realizes energy-gathering compensation by reducing the area of the tail end, and meanwhile, the strong spring is arranged in the middle of the amplitude compensator and forms resonance compensation with the ultrasonic vibration of the compensation rod. The structure vibration increasing of the compensating rod in the amplitude compensator and the resonance vibration increasing of the strong spring act together to compensate the flexible vibration absorption of the contact wheel. The device can realize the material removal and surface strengthening integrated processing in the abrasive belt grinding.
Description
Technical Field
The invention relates to the field of abrasive belt grinding, in particular to an ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation.
Background
The ultrasonic vibration assisted machining has the excellent performances of reducing cutting force, prolonging the service life of a cutter, improving the surface integrity, improving the structure performance and the like, and is widely applied to the machining fields of turning, milling, grinding wheel grinding and the like. The abrasive belt grinding and polishing are used as a final treatment process of complex curved surface components such as aircraft engine blades and the like, the machining allowance and machining texture of previous procedures can be eliminated, and the final surface state and surface performance of parts are determined. However, when the belt grinding and polishing process removes the machining allowance and the machining texture, the surface strengthening layer introduced by the previous process can be eliminated. At present, vibration finishing or surface shot blasting treatment is generally adopted for strengthening after abrasive belt grinding and polishing, and the process combination not only increases the production period of parts, but also improves the production cost. In addition, the shot blasting treatment generally causes the increase of surface roughness while introducing surface residual stress, which is not beneficial to the improvement of the comprehensive surface performance of the workpiece.
Therefore, there is a need for an ultrasonically vibrating abrasive belt grinding head that addresses the above-mentioned problems.
Disclosure of Invention
The invention aims to provide an ultrasonic vibration belt grinding head with flexible contact amplitude compensation, which aims to solve the problems in the prior art.
The technical scheme adopted for achieving the purpose of the invention is as follows: an ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation comprises a driving structure, an abrasive belt, an adapter plate, a tensioning mechanism, an ultrasonic system fixing device, an ultrasonic vibration system, an amplitude compensator and a contact wheel.
The adapter plate is fixed on the abrasive belt grinding machine, one side of the adapter plate facing the abrasive belt grinding machine is marked as the rear side of the adapter plate, and one side of the adapter plate back to the abrasive belt grinding machine is marked as the front side of the adapter plate.
The ultrasonic vibration device is characterized in that a driving structure, a tensioning mechanism and an ultrasonic vibration system are installed on the adapter plate, the driving structure comprises a driving wheel, a coupler and a servo motor, one end of the coupler penetrates through the adapter plate and is connected with the servo motor on the rear side of the adapter plate, and the other end of the coupler is connected with the driving wheel on the front side of the adapter plate.
The ultrasonic vibration system comprises an energy converter, an ultrasonic generator and an amplitude transformer, wherein the energy converter is fixed on the front side wall of the adapter plate through an ultrasonic system fixing device, the lower end of the energy converter is connected with the amplitude transformer, and the energy converter is connected with the ultrasonic generator.
The amplitude compensator comprises a compensating rod, a spring and a limiting plate, wherein the upper end of the compensating rod is provided with an external thread which is connected with an amplitude transformer, the lower end of the compensating rod is provided with a groove I, the inner side surface of the groove I is provided with two guide planes which are parallel to each other, and the spring is installed in the groove I. The diameter of the threaded end of the compensating rod is larger than that of the other end of the compensating rod, when vibration on the amplitude transformer is transmitted to the compensating rod, ultrasonic vibration energy is transmitted to the other end of the compensating rod from the threaded end of the compensating rod to realize structural energy accumulation vibration increase compensation, and the spring and the ultrasonic vibration of the central plane at the bottom of the compensating rod form resonance vibration increase compensation.
The contact wheel comprises a contact wheel mounting handle and a rubber wheel, a flange matched with the groove I is arranged at the upper end of the contact wheel mounting handle, and an annular groove for mounting the spring is formed in the upper end of the flange.
The flange is installed in recess I, and the lower extreme of spring is installed in the ring channel, and the upper end supports tightly with I top of recess.
The limiting plate comprises two combined plates with semicircular gaps, the two combined plates are spliced at the gaps to form through holes for the contact wheel mounting handle to penetrate through, the diameter of the upper end of the contact wheel mounting handle is larger than that of the through holes, the diameter of the lower end of the contact wheel mounting handle is smaller than that of the through holes, and the limiting plate is sleeved on the contact wheel mounting handle through the through holes and fixed on the lower end face of the compensating rod.
The lower end of the contact wheel mounting handle is connected with a rubber wheel.
The abrasive belt is located on the front side of the adapter plate and wound on the peripheries of the driving wheel, the tensioning mechanism and the rubber wheel.
Further, straining device includes torsional spring cover, torsional spring, dabber, torsion arm, take-up pulley and take-up pulley bearing, and the both ends of torsional spring cover are uncovered and inside cavity, and the one end of torsional spring cover is installed on keysets rear side wall.
One end of the mandrel penetrates through the adapter plate and extends into the torsion spring cover, and the other end of the mandrel is fixedly connected with the torsion arm on the front side of the adapter plate. The torsional spring cover that is located torsional spring cover is established on the dabber, and the one end of torsional spring is fixed on the dabber, and the other end is fixed on torsional spring cover inner wall.
The end of the torsion arm is connected with a tensioning wheel pin shaft, a tensioning wheel bearing is mounted on the tensioning wheel pin shaft, and the tensioning wheel is fixed on the tensioning wheel bearing.
Furthermore, the one end that the keysets was kept away from to the torsional spring cover is provided with the end cover, and the end cover passes through a plurality of fix with screws and covers, is provided with the round hole that supplies the mandrel tip installation on the inner wall of end cover, and the one end that the mandrel stretched into the torsional spring cover inserts in the round hole of end cover.
Furthermore, the adapter plate is fixed on the abrasive belt grinding machine through a cantilever.
Furthermore, the sleeve is arranged at one end of the torsion arm connected with the mandrel, and the sleeve on the torsion arm is connected with the mandrel through a flat key.
Further, a bearing is arranged between the mandrel and the inner wall of the torsion spring cover.
Furthermore, the lower extreme of contact wheel installation handle is connected with the wheel fixed plate, is provided with opening II down on the wheel fixed plate, and contact wheel round pin axle crosses recess II and contact wheel bearing, and the both ends riveting of contact wheel round pin axle is in the both sides of recess II. The rubber wheel is arranged on the contact wheel bearing.
Furthermore, the ultrasonic system fixing device is an L-shaped structure formed by splicing two flat plates which are perpendicular to each other, one flat plate of the ultrasonic system fixing device is fixed on the adapter plate through a plurality of screws, and the other flat plate is connected with a flange plate on the transducer through a plurality of screws.
Furthermore, the amplitude transformer is in threaded connection with the compensation rod, the diameter of the threaded end of the compensation rod is larger than that of the other end of the compensation rod, when vibration on the amplitude transformer is transmitted to the compensation rod, ultrasonic vibration energy is transmitted to the other end of the compensation rod from the threaded end of the compensation rod to achieve structural energy-gathering vibration-increasing compensation, and the spring and the ultrasonic vibration of the central plane of the bottom of the compensation rod form resonance vibration-increasing compensation.
Furthermore, the lateral wall of flange is provided with two guiding planes that are parallel to each other, and the cooperation of two guiding planes in with recess I leads.
The invention has the beneficial effects that:
1. the ultrasonic vibration system of the device is rigidly fixed on the adapter plate, so that vibration absorption and vibration reduction of the flexible force control system are avoided, unidirectional amplitude controllable propagation of ultrasonic vibration is realized, and the vibration amplitude adjusting range of the contact wheel is enlarged;
2. the device can realize secondary amplification of the mechanical ultrasonic vibration amplitude at the tail end of the amplitude transformer by adding the amplitude compensator, and the primary energy accumulation and vibration increase of the compensation rod and the secondary resonance and vibration increase of the strong spring jointly act to compensate the flexible vibration absorption of the contact wheel, thereby increasing the adjustable range of the ultrasonic vibration amplitude in the abrasive belt grinding system;
3. the device realizes the positive application of ultrasonic vibration in the abrasive belt grinding, and simultaneously performs small-amplitude high-frequency impact on the grinding processing surface in the process of removing materials by abrasive belt polishing, thereby increasing the residual compressive stress, refining the microstructure, improving the surface integrity, improving the service performance and realizing the precise grinding processing and the surface strengthening fusion processing;
4. the device can improve the performance of the processed surface, reduce the processing procedures of parts and improve the production efficiency, and is particularly suitable for complex curved surface members needing abrasive belt grinding processing.
Drawings
FIG. 1 is a front view of the structure of the present invention;
FIG. 2 is a schematic diagram of energy conversion during operation of the amplitude compensator;
FIG. 3 is a side view of the structure of the present invention;
FIG. 4 is a schematic view of the connection of the amplitude compensator to the contact wheel;
fig. 5 is an upper end view of the flange.
In the figure: the ultrasonic vibration device comprises a driving structure 1, a driving wheel 101, a coupler 102, a servo motor 103, an abrasive belt 2, an adapter plate 3, a cantilever 301, a tensioning mechanism 4, a torsion spring cover 401, an end cover 402, a flat key 403, a torsion spring 404, a mandrel 405, a bearing 406, a torsion arm 407, a tensioning wheel 408, a tensioning wheel bearing 409, a tensioning wheel pin shaft 410, an ultrasonic system fixing device 5, an ultrasonic vibration system 6, a transducer 601, a piezoelectric ceramic wafer 6011, an ultrasonic generator 602, a horn 603, an amplitude compensator 7, a compensating rod 701, a groove I7011, a spring 702, a limiting plate 703, a contact wheel 8, a contact wheel mounting handle 801, a flange 8011, a guide plane 80111, an annular groove 8012, a contact wheel bearing 802, a contact wheel pin shaft 803, a rubber wheel 804, a wheel fixing plate and an abrasive belt grinding machine 9.
Detailed Description
The present invention will be further described with reference to the following examples, but it should be understood that the present invention is not limited to the following examples. Various substitutions and alterations can be made without departing from the technical idea of the invention and the scope of the invention is covered by the present invention according to the common technical knowledge and the conventional means in the field.
Example 1:
the embodiment discloses an ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation, which comprises a driving structure 1, an abrasive belt 2, an adapter plate 3, a tensioning mechanism 4, an ultrasonic system fixing device 5, an ultrasonic vibration system 6, an amplitude compensator 7 and a contact wheel 8.
The adapter plate 3 is fixed on the abrasive belt grinding machine 9 by a cantilever 301, and referring to fig. 3, a side of the adapter plate 3 facing the abrasive belt grinding machine 9 is denoted as a rear side of the adapter plate 3, and a side of the adapter plate 3 facing away from the abrasive belt grinding machine 9 is denoted as a front side of the adapter plate 3.
Referring to fig. 1, a driving structure 1, a tensioning mechanism 4 and an ultrasonic vibration system 6 are mounted on the adapter plate 3, the driving structure 1 includes a driving wheel 101, a coupler 102 and a servo motor 103, referring to fig. 3, one end of the coupler 102 penetrates through the adapter plate 3 and is connected with the servo motor 103 on the rear side of the adapter plate 3, and the other end is connected with the driving wheel 101 on the front side of the adapter plate 3.
Referring to fig. 3, the tensioning mechanism 4 includes a torsion spring cover 401, an end cover 402, a flat key 403, a torsion spring 404, a mandrel 405, a torsion arm 407, a tensioning wheel 408 and a tensioning wheel bearing 409, two ends of the torsion spring cover 401 are open and the inside is hollow, one end of the torsion spring cover 401 is installed on the rear side wall of the adapter plate 3, one end of the torsion spring cover 401, which is far away from the adapter plate 3, is provided with the end cover 402, the end cover 402 is fixed on the torsion spring cover 401 through a plurality of screws, a round hole for installing the end of the mandrel 405 is formed in the inner wall of the end cover 402, one end of the mandrel 405 passes through the adapter plate 3 and extends into the round holes of the torsion spring cover 401 and the end cover 402, and the other end is fixedly connected with the torsion arm 407 on the front side of the adapter plate 3. A sleeve is arranged at one end of the torsion arm 407 connected with the spindle 405, and the sleeve on the torsion arm 407 is connected with the spindle 405 through a flat key 403. A bearing 406 is arranged between the spindle 405 and the inner wall of the torsion spring cover 401.
The torsion spring 404 in the torsion spring cover 401 is sleeved on the mandrel 405, one end of the torsion spring 404 is fixed on the mandrel 405, the other end of the torsion spring 404 is fixed on the inner wall of the torsion spring cover 401, and the torsion spring 404 is in a pre-twisting state.
The end of the torsion arm 407 is connected with a tension wheel pin shaft 410, a tension wheel bearing 409 is mounted on the tension wheel pin shaft 410, and a tension wheel 408 is fixed on the tension wheel bearing 409.
Referring to fig. 3, the ultrasonic vibration system 6 includes a transducer 601, an ultrasonic generator 602, and a horn 603, the transducer 601 is fixed on the adapter plate 3 through an ultrasonic system fixing device 5, the ultrasonic system fixing device 5 is an L-shaped structure formed by splicing two perpendicular flat plates, one flat plate of the ultrasonic system fixing device 5 is fixed on the adapter plate 3 through a plurality of screws, and the other flat plate is connected with a flange plate at the upper end of the transducer 601 through a plurality of screws.
The lower end of the transducer 601 is connected with an amplitude transformer 603, the transducer 601 is connected with an ultrasonic generator 602, and the lower end of the amplitude transformer 603 is provided with external threads.
Referring to fig. 4, the amplitude compensator 7 includes a compensating rod 701, a spring 702 and a limiting plate 703, the diameter of the upper end of the compensating rod 701 is larger than that of the lower end, the upper end is provided with a threaded hole, the upper end of the compensating rod 701 is in threaded connection with the amplitude transformer 603, the lower end is provided with a groove i 7011, the spring 702 is installed in the groove i 7011, and the spring 702 is a strong spring. The diameter of the threaded end of the compensation rod 701 is larger than that of the other end of the compensation rod 701, when vibration on the amplitude variation rod 603 is transmitted to the compensation rod 701, ultrasonic vibration energy is transmitted to the other end from the threaded end of the compensation rod 701 to achieve structural energy accumulation vibration increase compensation, and the spring 702 and the ultrasonic vibration of the central plane at the bottom of the compensation rod 701 form resonance vibration increase compensation.
Referring to fig. 4, the contact wheel 8 includes a contact wheel mounting shank 801 and a rubber wheel 804, a flange 8011 matching with the groove i 7011 is provided at an upper end of the contact wheel mounting shank 801, and an annular groove 8012 for mounting the spring 702 is provided at an upper end of the flange 8011. Two parallel guide planes 80111 are arranged on the side wall of the flange 8011, and are matched with the two parallel planes in the groove I7011 to guide movement and prevent the flange 8011 from twisting in the circumferential direction.
The flange 8011 is mounted in the groove i 7011, the lower end of the spring 702 is mounted in the annular groove 8012, and the upper end abuts against the top of the groove i 7011.
The limiting plate 703 comprises two combined plates with semicircular notches, the two combined plates are spliced at the notches to form a through hole for the contact wheel mounting handle 801 to pass through, the diameter of the upper end of the contact wheel mounting handle 801 is larger than that of the through hole, the diameter of the lower end of the contact wheel mounting handle 801 is smaller than that of the through hole, and the limiting plate 703 is sleeved on the contact wheel mounting handle 801 through the through hole and fixed on the lower end face of the compensating rod 701;
referring to fig. 4, a wheel fixing plate 805 is connected to the lower end of the contact wheel mounting handle 801, a groove ii with a downward opening is formed in the wheel fixing plate 805, and a contact wheel pin 803 crosses the groove ii and the contact wheel bearing 802, and two ends of the contact wheel pin are riveted to two sides of the groove ii.
The contact wheel pin 803 is provided with a contact wheel bearing 802, and the rubber wheel 804 is arranged on the contact wheel bearing 802.
The abrasive belt 2 is positioned on the front side of the adapter plate 3, the abrasive belt 2 is wound on the peripheries of the driving wheel 101, the tension wheel 408 and the rubber wheel 804, and the abrasive belt 2 is a common abrasive belt.
When the belt sander works, the driving wheel 101 drives the abrasive belt 2 to rotate, the rotating speed of the driving wheel 101 can be adjusted by controlling the rotating speed of the servo motor 103, so that the linear speed control of abrasive belt grinding processing is realized, and the tension wheel 408 tensions the abrasive belt 2 under the action of the torsion spring 404. Referring to fig. 2, the ultrasonic generator 602 converts an electric signal into a high-frequency electric signal, the piezoelectric ceramic wafer 6011 in the transducer 601 converts the high-frequency electric signal into a micro-mechanical vibration signal, the amplitude transformer 603 amplifies the amplitude of the micro-mechanical vibration in the transducer, the amplitude compensator 7 secondarily amplifies the vibration at the tail end of the amplitude transformer 603 and then drives the rubber wheel 804 to vibrate up and down, the deformation and vibration absorption of the flexible rubber wheel 804 are compensated, the rubber wheel 804 vibrates to drive the abrasive belt 2 to perform high-frequency impact on a grinding surface, and the abrasive belt 2 at the rubber wheel 804 rotates to remove materials.
In the process of polishing the abrasive belt, the high-frequency mechanical vibration at the tail end of the amplitude transformer 603 is transmitted to the compensating rod 701 in the amplitude compensator 7, and the diameter of the compensating rod 701 is changed, so that energy accumulation is carried out at the other end, and primary amplitude compensation is realized. The spring 702 in the amplitude compensator 7 is in a compressed state, and when mechanical ultrasonic vibration is transmitted to the spring 702 through the compensating rod 701, the spring 702 is driven to resonate, and due to the fact that the spring 702 is in a pre-compressed state, the overall vibration after resonance is enhanced, namely, the amplitude is amplified for the second time, and the amplification effect can be adjusted by replacing the spring 702 with different heights. The primary amplitude compensation of the compensation rod 701 and the secondary amplitude compensation of the spring resonance jointly compensate for the flexible shock absorption of the contact wheel. The device has important significance for researching the influence of ultrasonic vibration on surface integrity and mechanical property in the abrasive belt grinding process.
It is worth to be noted that the introduction of ultrasonic vibration impact in the abrasive belt grinding process is an effective way to solve the above-mentioned contradiction and realize the integrated processing of material removal and surface strengthening in abrasive belt grinding. However, the existing ultrasonic vibration abrasive belt grinding head has vibration absorption of a flexible force control system, flexible vibration absorption of a contact wheel and mechanical ultrasonic vibration bidirectional transmission, so that the difference of vibration amplitudes of abrasive belts at contact parts is large and uncontrollable, and adverse effects are generated on a processing surface. In the device of the embodiment, the ultrasonic vibration device 5 is rigidly fixed on the adapter plate 3, so that vibration absorption of the flexible force control system is avoided, unidirectional transmission of ultrasonic vibration is realized, and the vibration amplitude adjusting range of the rubber wheel 805 is increased. An amplitude compensator 7 is arranged between the amplitude transformer 603 and the contact wheel 8, so that secondary vibration increase can be realized, and flexible vibration absorption of the contact wheel 8 is compensated.
In the grinding and polishing process, the ultrasonic vibration system 6 drives the contact wheel 8 to vibrate up and down, and in the process of removing the abrasive belt grinding material, ultrasonic vibration perpendicular to the contact surface is applied to the processing surface to perform small-amplitude high-frequency impact on the grinding and polishing processing surface. The device realizes the organic integration of surface precision grinding and polishing processing and surface strengthening, introduces larger surface residual compressive stress and refined microstructure in the process of abrasive belt grinding and polishing processing, improves the surface quality, promotes the integrity and comprehensive mechanical property of the material surface, and has important significance for reducing part processing procedures, improving the production efficiency and promoting the comprehensive property of the surface.
The invention aims to provide an ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation, which aims to solve the problems of vibration absorption of a flexible force control system, flexible vibration absorption of a contact wheel, larger and uncontrollable vibration amplitude difference of an abrasive belt at a contact part and the like of the conventional ultrasonic vibration abrasive belt grinding head.
Example 2:
the embodiment discloses an ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation, which comprises a driving structure 1, an abrasive belt 2, an adapter plate 3, a tensioning mechanism 4, an ultrasonic system fixing device 5, an ultrasonic vibration system 6, an amplitude compensator 7 and a contact wheel 8.
The adapter plate 3 is fixed on the abrasive belt grinding machine 9, and referring to fig. 3, the side of the adapter plate 3 facing the abrasive belt grinding machine 9 is marked as the rear side of the adapter plate 3, and the side of the adapter plate 3 facing away from the abrasive belt grinding machine 9 is marked as the front side of the adapter plate 3.
Referring to fig. 1, a driving structure 1, a tensioning mechanism 4 and an ultrasonic vibration system 6 are mounted on the adapter plate 3, the driving structure 1 includes a driving wheel 101, a coupler 102 and a servo motor 103, referring to fig. 3, one end of the coupler 102 penetrates through the adapter plate 3 and is connected with the servo motor 103 on the rear side of the adapter plate 3, and the other end is connected with the driving wheel 101 on the front side of the adapter plate 3.
Referring to fig. 3, the ultrasonic vibration system 6 includes a transducer 601, an ultrasonic generator 602, and a horn 603, the transducer 601 is fixed on the front sidewall of the adapter plate 3 by an ultrasonic system fixing device 5, the lower end of the transducer is connected to the horn 603, and the transducer 601 is connected to the ultrasonic generator 602.
Referring to fig. 4, the amplitude compensator 7 includes a compensating rod 701, a spring 702 and a limiting plate 703, the upper end of the compensating rod 701 is connected to the amplitude transformer 603, the lower end of the compensating rod is provided with a groove i 7011, the inner side surface of the groove i 7011 is provided with two parallel guide planes, and the spring 702 is installed in the groove i 7011.
Referring to fig. 4, the contact wheel 8 includes a contact wheel mounting shank 801 and a rubber wheel 804, a flange 8011 matching with the groove i 7011 is provided at an upper end of the contact wheel mounting shank 801, and an annular groove 8012 for mounting the spring 702 is provided at an upper end of the flange 8011.
The flange 8011 is mounted in the groove i 7011, the lower end of the spring 702 is mounted in the annular groove 8012, and the upper end abuts against the top of the groove i 7011.
The limiting plate 703 comprises two combined plates with semicircular notches, the two combined plates are spliced at the notches to form a through hole for the contact wheel mounting handle 801 to pass through, the diameter of the upper end of the contact wheel mounting handle 801 is larger than that of the through hole, the diameter of the lower end of the contact wheel mounting handle 801 is smaller than that of the through hole, and the limiting plate 703 is sleeved on the contact wheel mounting handle 801 through the through hole and fixed on the lower end face of the compensating rod 701.
The lower end of the contact wheel mounting handle 801 is connected with a rubber wheel 804.
The abrasive belt 2 is positioned at the front side of the adapter plate 3, and the abrasive belt 2 is wound on the periphery of the driving wheel 101, the tensioning mechanism 4 and the rubber wheel 804.
The device can realize the organic integration of ultrasonic vibration and abrasive belt grinding and polishing processing, secondary amplification is carried out on mechanical ultrasonic vibration through the amplitude compensator, the flexible vibration absorption of the compensation contact wheel is realized, and meanwhile, the amplitude is controllable. The device can realize the integrated processing of material removal and surface strengthening in the abrasive belt polishing and grinding processing, and has important significance for shortening the production period, reducing the production cost and improving the comprehensive performance.
Example 3:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 3, the tensioning mechanism 4 includes a torsion spring cover 401, an end cover 402, a flat key 403, a torsion spring 404, a spindle 405, a torsion arm 407, a tensioning wheel 408, and a tensioning wheel bearing 409, two ends of the torsion spring cover 401 are open and have a hollow interior, and one end of the torsion spring cover 401 is mounted on the rear side wall of the adapter plate 3.
One end of the spindle 405 penetrates through the adapter plate 3 and extends into the torsion spring cover 401, and the other end of the spindle is fixedly connected with a torsion arm 407 on the front side of the adapter plate 3. The torsion spring 404 in the torsion spring cover 401 is sleeved on the spindle 405, one end of the torsion spring 404 is fixed on the spindle 405, and the other end of the torsion spring 404 is fixed on the inner wall of the torsion spring cover 401.
The end of the torsion arm 407 is connected with a tension wheel pin shaft 410, a tension wheel bearing 409 is mounted on the tension wheel pin shaft 410, and a tension wheel 408 is fixed on the tension wheel bearing 409.
Example 4:
the main structure of this embodiment is the same as that of embodiment 3, and further, referring to fig. 3, an end cover 402 is disposed at one end of the torsion spring cover 401, which is far away from the interposer 3, the end cover 402 is fixed on the torsion spring cover 401 through a plurality of screws, a circular hole for installing the end of the spindle 405 is disposed on the inner wall of the end cover 402, and one end of the spindle 405, which extends into the torsion spring cover 401, is inserted into the circular hole of the end cover 402.
Example 5:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 3, the adapter plate 3 is fixed on the belt grinder 9 through a cantilever 301.
Example 6:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 3, a sleeve is disposed at one end of the torsion arm 407 connected to the spindle 405, and the sleeve on the torsion arm 407 is connected to the spindle 405 through a flat key 403.
Example 7:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 3, a bearing 406 is disposed between the spindle 405 and the inner wall of the torsion spring cover 401.
Example 8:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 4, the lower end of the contact wheel mounting handle 801 is connected with a wheel fixing plate 805, a groove ii with a downward opening is formed in the wheel fixing plate 805, and a contact wheel pin 803 traverses the groove ii and is riveted at two ends thereof on two sides of the groove ii.
The contact wheel pin 803 is provided with a contact wheel bearing 802, and the rubber wheel 804 is arranged on the contact wheel bearing 802.
Example 9:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 3, the upper end of the transducer 601 is fixed on the adapter plate 3 through an ultrasonic system fixing device 5, the ultrasonic system fixing device 5 is an L-shaped structure formed by splicing two perpendicular flat plates, one flat plate of the ultrasonic system fixing device 5 is fixed on the adapter plate 3 through a plurality of screws, and the other flat plate is connected with the flange plate at the upper end of the transducer 601 through a plurality of screws.
Example 10:
the main structure of this embodiment is the same as that of embodiment 2, further, the amplitude transformer 603 and the compensation rod 701 are connected by a thread, the diameter of the thread end of the compensation rod 701 is larger than that of the other end, when the vibration on the amplitude transformer 603 is transmitted to the compensation rod 701, the ultrasonic vibration energy is transmitted from the thread end of the compensation rod 701 to the other end to realize structure energy-gathering vibration-increasing compensation, and the spring 702 and the ultrasonic vibration of the central plane at the bottom of the compensation rod 701 form resonance vibration-increasing compensation.
Example 11:
the main structure of this embodiment is the same as that of embodiment 2, and further, referring to fig. 5, two parallel guiding planes 80111 are provided on the side wall of the flange 8011, and cooperate with the two parallel planes in the groove i 7011 to guide the movement, so as to prevent the flange 8011 from twisting in the circumferential direction.
Claims (10)
1. An ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation is characterized in that: the ultrasonic vibration device comprises a driving structure (1), an abrasive belt (2), an adapter plate (3), a tensioning mechanism (4), an ultrasonic system fixing device (5), an ultrasonic vibration system (6), an amplitude compensator (7) and a contact wheel (8);
the adapter plate (3) is fixed on the abrasive belt grinding machine (9), one side of the adapter plate (3) facing the abrasive belt grinding machine (9) is marked as the rear side of the adapter plate (3), and one side of the adapter plate (3) back to the abrasive belt grinding machine (9) is marked as the front side of the adapter plate (3);
the ultrasonic vibration device is characterized in that a driving structure (1), a tensioning mechanism (4) and an ultrasonic vibration system (6) are mounted on the adapter plate (3), the driving structure (1) comprises a driving wheel (101), a coupler (102) and a servo motor (103), one end of the coupler (102) penetrates through the adapter plate (3) and is connected with the servo motor (103) on the rear side of the adapter plate (3), and the other end of the coupler (102) is connected with the driving wheel (101) on the front side of the adapter plate (3);
the ultrasonic vibration system (6) comprises an energy converter (601), an ultrasonic generator (602) and an amplitude transformer (603), wherein the energy converter (601) is fixed on the front side wall of the adapter plate (3) through an ultrasonic system fixing device (5), the lower end of the energy converter is connected with the amplitude transformer (603), and the energy converter (601) is connected with the ultrasonic generator (602);
the amplitude compensator (7) comprises a compensating rod (701), a spring (702) and a limiting plate (703), the upper end of the compensating rod (701) is connected with the amplitude transformer (603), the lower end of the compensating rod is provided with a groove I (7011), the inner side surface of the groove I (7011) is provided with two parallel guide planes, and the spring (702) is arranged in the groove I (7011);
the contact wheel (8) comprises a contact wheel mounting handle (801) and a rubber wheel (804), the upper end of the contact wheel mounting handle (801) is provided with a flange (8011) matched with the groove I (7011), and the upper end of the flange (8011) is provided with an annular groove (8012) for mounting the spring (702);
the flange (8011) is arranged in the groove I (7011), the lower end of the spring (702) is arranged in the annular groove (8012), and the upper end of the spring is tightly abutted to the top of the groove I (7011);
the limiting plate (703) comprises two combined plates with semicircular notches, the two combined plates are spliced at the notches to form a through hole for the contact wheel mounting handle (801) to pass through, the diameter of the upper end of the contact wheel mounting handle (801) is larger than that of the through hole, the diameter of the lower end of the contact wheel mounting handle (801) is smaller than that of the through hole, and the limiting plate (703) is sleeved on the contact wheel mounting handle (801) through the through hole and fixed on the lower end face of the compensating rod (701);
the lower end of the contact wheel mounting handle (801) is connected with a rubber wheel (804);
the abrasive belt (2) is located on the front side of the adapter plate (3), and the abrasive belt (2) is wound on the peripheries of the driving wheel (101), the tensioning mechanism (4) and the rubber wheel (804).
2. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: the tensioning mechanism (4) comprises a torsion spring cover (401), a torsion spring (404), a mandrel (405), a torsion arm (407), a tensioning wheel (408) and a tensioning wheel bearing (409), two ends of the torsion spring cover (401) are open, the interior of the torsion spring cover is hollow, and one end of the torsion spring cover (401) is installed on the rear side wall of the adapter plate (3);
one end of the mandrel (405) penetrates through the adapter plate (3) and extends into the torsion spring cover (401), and the other end of the mandrel is fixedly connected with a torsion arm (407) on the front side of the adapter plate (3); a torsion spring (404) positioned in the torsion spring cover (401) is sleeved on the mandrel (405), one end of the torsion spring (404) is fixed on the mandrel (405), and the other end of the torsion spring (404) is fixed on the inner wall of the torsion spring cover (401);
the end part of the torsion arm (407) is connected with a tensioning wheel pin shaft (410), a tensioning wheel bearing (409) is installed on the tensioning wheel pin shaft (410), and a tensioning wheel (408) is fixed on the tensioning wheel bearing (409).
3. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: an end cover (402) is arranged at one end, far away from the adapter plate (3), of the torsion spring cover (401), the end cover (402) is fixed on the torsion spring cover (401) through a plurality of screws, a round hole for installing the end of the mandrel (405) is formed in the inner wall of the end cover (402), and the end, extending into the torsion spring cover (401), of the mandrel (405) is inserted into the round hole of the end cover (402).
4. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: the adapter plate (3) is fixed on the abrasive belt grinding machine (9) through a cantilever (301).
5. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: a sleeve is arranged at one end, connected with the mandrel (405), of the torsion arm (407), and the sleeve on the torsion arm (407) is connected with the mandrel (405) through a flat key (403).
6. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: and a bearing (406) is arranged between the mandrel (405) and the inner wall of the torsion spring cover (401).
7. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: the lower end of the contact wheel mounting handle (801) is connected with a wheel fixing plate (805), a groove II with a downward opening is formed in the wheel fixing plate (805), a contact wheel pin shaft (803) penetrates through the groove II and the contact wheel bearing (802), and two ends of the contact wheel pin shaft (803) are riveted to two sides of the groove II; the rubber wheel (804) is mounted on a contact wheel bearing (802).
8. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: the ultrasonic system fixing device (5) is of an L-shaped structure formed by splicing two mutually perpendicular flat plates, one flat plate of the ultrasonic system fixing device (5) is fixed on the adapter plate (3) through a plurality of screws, and the other flat plate is connected with a flange plate on the transducer (601) through a plurality of screws.
9. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: the amplitude transformer (603) is in threaded connection with the compensation rod (701), the diameter of the threaded end of the compensation rod (701) is larger than that of the other end of the compensation rod (701), when vibration on the amplitude transformer (603) is transmitted to the compensation rod (701), ultrasonic vibration energy is transmitted to the other end of the compensation rod (701) from the threaded end of the compensation rod (701) to achieve structural energy-gathering vibration-increasing compensation, and the spring (702) and the ultrasonic vibration of the central plane of the bottom of the compensation rod (701) form resonance vibration-increasing compensation.
10. An ultrasonically-vibratable, abrasive belt grinding head with compliant contact amplitude compensation, as claimed in claim 1, wherein: the side walls of the flange (8011) are provided with two guide planes (80111) parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110430084.2A CN113752099A (en) | 2021-04-21 | 2021-04-21 | Ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110430084.2A CN113752099A (en) | 2021-04-21 | 2021-04-21 | Ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation |
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| CN113752099A true CN113752099A (en) | 2021-12-07 |
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| CN202110430084.2A Pending CN113752099A (en) | 2021-04-21 | 2021-04-21 | Ultrasonic vibration abrasive belt grinding head with flexible contact amplitude compensation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114700544A (en) * | 2022-02-23 | 2022-07-05 | 重庆大学 | Longitudinal-torsional coupling three-dimensional ultrasonic knife handle device |
| WO2023123207A1 (en) * | 2021-12-28 | 2023-07-06 | 无锡透平叶片有限公司 | Process method for improving surface smoothness of combustion turbine blade profile surface |
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2021
- 2021-04-21 CN CN202110430084.2A patent/CN113752099A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023123207A1 (en) * | 2021-12-28 | 2023-07-06 | 无锡透平叶片有限公司 | Process method for improving surface smoothness of combustion turbine blade profile surface |
| CN114700544A (en) * | 2022-02-23 | 2022-07-05 | 重庆大学 | Longitudinal-torsional coupling three-dimensional ultrasonic knife handle device |
| CN114700544B (en) * | 2022-02-23 | 2023-12-12 | 重庆大学 | Longitudinal torsion coupling three-dimensional ultrasonic knife handle device |
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