CN216883320U

CN216883320U - Vibration mechanism and superfinishing machine provided with same

Info

Publication number: CN216883320U
Application number: CN202120712008.6U
Authority: CN
Inventors: 王伟钢
Original assignee: Thielenhaus Machinery Shanghai Co ltd
Current assignee: Thielenhaus Machinery Shanghai Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2022-07-05
Anticipated expiration: 2031-04-08

Abstract

The utility model relates to a vibration mechanism and a superfinishing machine provided with the same, which comprise a secondary vibration device and a connecting bracket, wherein the secondary vibration device comprises a driving motor, a cam piece and a transmission device; in the cam component, an eccentric shaft is connected with an output shaft of a driving motor through a coupler, and a rotating cam is sleeved on the free end of the eccentric shaft and is driven by the eccentric shaft to rotate; in the transmission device, a sliding pair is connected with a vibrating rod of a high-frequency vibrating piece through a vibrating connecting piece, and a transmission hole for accommodating a rotating cam in an inserted mode is formed in the sliding pair. The vibration mechanism can meet the requirement of a special contour curve on a workpiece machined by the superfinishing machine and improve the superfinishing effect of the superfinishing machine.

Description

Vibration mechanism and superfinishing machine provided with same

Technical Field

The utility model relates to the technical field of superfinishing machines, in particular to a vibration mechanism for a superfinishing machine.

Background

The through type centerless grinding superfinishing machine mainly drives the oilstone through the high-frequency vibration mechanism to enable the oilstone to carry out high-frequency vibration and honing on a workpiece, so that the effect of superfinishing the workpiece is achieved. Therefore, the vibration frequency and the vibration amplitude of the oilstone are related to the superfinishing result of the workpiece. However, the machining precision of the conventional through-type centerless grinding superfinishing machine cannot meet the superfinishing requirements of some workpieces and cannot meet the superfinishing requirements of some special contour curves on the workpieces.

SUMMERY OF THE UTILITY MODEL

In order to improve the super-precision of a super-precision machine and meet the super-precision requirement on a special contour curve on a workpiece, the utility model provides a vibration mechanism, which comprises a secondary vibration device and a connecting bracket, wherein the secondary vibration device comprises a driving motor, a cam piece and a transmission device, and the driving motor is fixedly arranged on a high-frequency vibration piece through the connecting bracket and is close to the rear end of the high-frequency vibration piece; the cam part comprises an eccentric shaft and a rotating cam, the eccentric shaft is connected with an output shaft of the driving motor through a coupler, and the rotating cam is sleeved on the free end of the eccentric shaft and is driven to rotate by the eccentric shaft; the transmission device comprises a sliding pair and a vibration connecting piece, the sliding pair is connected with a vibration rod of the high-frequency vibration piece through the vibration connecting piece, and a transmission hole for accommodating the rotating cam in a plug-in mounting mode is formed in the sliding pair. The vibration mechanism utilizes the driving motor to drive the cam part to rotate and convert the rotary motion into secondary vibration, and utilizes the transmission device to transmit the secondary vibration to the high-frequency vibration part and superpose the secondary vibration on the basic vibration generated by the high-frequency vibration part to form superposed vibration, so that the frequency of the superposed vibration is adjusted by adjusting the rotating speed of the driving motor, the amplitude of the superposed vibration is adjusted by adjusting the eccentric shaft and the rotating cam, the vibration frequency and the amplitude of the superposed vibration can be further selected according to the requirement, the requirement of special profile curve on the workpiece machined by the superfinishing machine is met, and the superfinishing effect of the superfinishing machine is improved. In addition, the vibration mechanism is provided with the driving motor, the cam component and the transmission device only on the original high-frequency vibration component of the superfinishing machine, and has the advantages of simple structure, convenient manufacture, easy installation and debugging and good economic benefit.

Preferably, the vibration connecting piece comprises a horizontal connecting rod, a vertical connecting rod and a connecting lantern ring, the horizontal connecting rod is vertically connected with the vertical connecting rod, the free end of the horizontal connecting rod is connected with the sliding pair, and the connecting lantern ring is sleeved on the vibration rod of the high-frequency vibration piece and is connected with the free end of the vertical connecting rod; under the using state, the vibration connecting piece drives the vibration rod to vibrate under the driving of the sliding pair. The vibration connecting piece is simple in structure, convenient to manufacture and low in manufacturing and assembling cost.

Preferably, a front limiting plate and a rear limiting plate are sleeved on the vibrating rod, the front limiting plate is far away from the rear end of the high-frequency vibrating piece, and the rear limiting plate is close to the rear end of the high-frequency vibrating piece; the connecting sleeve ring is located preceding limiting plate with between the limiting plate, the connecting sleeve ring with preceding limiting plate reaches set up the elastic component between the limiting plate, and this elastic component cover is put on the vibrating arm. Like this, the vibration connecting piece passes through the elastic component and transmits secondary vibration to the vibrating arm on, avoids the basic vibration in secondary vibration and the high-frequency vibration piece production to produce the rigidity conflict, and directional stability when guaranteeing the secondary vibration transmission alleviates the impact force of vibration when overlapping, makes the vibration stack process more steady to improve super smart effect of super smart machine. Further, the elastic member includes an outer elastic member and an inner elastic member, and the inner elastic member is inserted into the outer elastic member. Therefore, the secondary vibration is transmitted by utilizing the two layers of elastic parts, and the stability of the vibration superposition process can be further improved. Further preferably, two sides of the connection collar are provided with a ring convex ring, and the ring convex ring is clamped between the outer elastic piece and the inner elastic piece. Therefore, when secondary vibration is transmitted, the situation that the inner elastic piece and the outer elastic piece interfere with each other due to stress deformation to influence the stability of vibration superposition can be avoided.

Preferably, the free end of the vertical connecting rod is provided with a clamping groove, the outer edge of the connecting lantern ring is provided with a connecting plate, and the connecting plate is inserted into the clamping groove and connected with the vertical connecting rod through a connecting bolt; and a sliding hole is formed in the vertical connecting rod, a sliding rod parallel to the vibrating rod is inserted in the sliding hole, and the two ends of the sliding rod are fixedly connected with the shell of the high-frequency vibrating piece. Therefore, the connecting plate on the connecting lantern ring is inserted into the clamping groove on the vertical connecting rod, so that the connecting stability between the connecting lantern ring and the vertical connecting rod can be improved; the vertical connecting rod is provided with the sliding hole for inserting the sliding rod, so that the vertical connecting rod can slide on the sliding rod, and the transmission device can be prevented from being dislocated in the using process to influence the vibration transmission and the superposition effect.

Preferably, the connecting end of the horizontal connecting rod is provided with a clamping groove, and the vertical connecting rod is inserted into the clamping groove and connected with the horizontal connecting rod through a connecting bolt. Therefore, the clamping groove is used for clamping the vertical connecting rod, so that the connection stability between the vertical connecting rod and the horizontal connecting rod can be improved. Furthermore, a connecting convex strip is arranged at the free end of the horizontal connecting rod, a connecting strip groove is arranged on the sliding pair, and when the horizontal connecting rod is connected with the sliding pair, the connecting convex strip is inserted into the connecting strip groove. Therefore, in the using process, the horizontal connecting rod can be prevented from shifting or misplacing relative to the sliding pair, namely, the vibration connecting piece is prevented from shifting or misplacing relative to the sliding pair, so that the stability of secondary vibration transmission can be improved, and the stability of superposition vibration can be improved.

Preferably, the connecting bracket comprises an upper connecting plate, a lower connecting plate and a middle connecting plate, and the upper connecting plate and the lower connecting plate are connected with the middle connecting plate at two ends of the middle connecting plate to form a U-shaped structure; a supporting through hole is formed in the free end of the upper connecting plate, the driving motor is clamped on the upper connecting plate, and an output shaft of the driving motor penetrates through the supporting through hole; the free end of the lower connecting plate is provided with a mounting hole, the inner wall of the mounting hole is provided with a supporting table and a pressing groove, the eccentric shaft is sleeved with a fixed block, the fixed block is pressed on the supporting table, and a pressing ring for pressing the fixed block is arranged in the pressing groove; the middle connecting plate is attached to an installation frame outside the high-frequency vibration piece and fixed to the installation frame through a connecting bolt. The connecting support is simple in structure, convenient to manufacture and low in cost, and is simple and convenient to connect and assemble with the high-frequency vibration part, the driving motor and the cam part.

In addition, the utility model also provides a superfinishing machine which is provided with any one of the vibration mechanisms. The vibration mechanism assembled by the superfinishing machine drives the cam piece to rotate by using the driving motor and converts the rotary motion into secondary vibration, the secondary vibration is transmitted to the high-frequency vibration piece by using the transmission device and is superposed on the basic vibration generated by the high-frequency vibration piece to form superposed vibration, so that the frequency of the superposed vibration is adjusted by adjusting the rotating speed of the driving motor, the amplitude of the superposed vibration is adjusted by adjusting the eccentric shaft and the rotating cam, the vibration frequency and the amplitude of the superposed vibration can be selected according to needs, the requirement of special profile curves on the workpiece machined by the superfinishing machine is met, and the superfinishing effect of the superfinishing machine is improved.

Drawings

FIG. 1 is a schematic structural view of a vibration mechanism according to the present invention;

FIG. 2 is an enlarged schematic view of the sectional structure A-A in FIG. 1;

fig. 3 is an enlarged schematic view of Q in fig. 2.

Detailed Description

The vibration mechanism and the superfinishing machine equipped with the vibration mechanism according to the present invention will be described in detail with reference to fig. 1 to 3.

As shown in fig. 1 to 3, the vibration mechanism of the present invention includes a secondary vibration device 1 and a connection bracket 2. The secondary vibration device 1 comprises a driving motor 11, a cam member 12 and a transmission device 13, wherein the driving motor 11 is fixedly arranged on the high-frequency vibration member 3 through a connecting bracket 2 and is close to the rear end of the high-frequency vibration member 3; the cam member 12 comprises an eccentric shaft 121 and a rotating cam 122, the eccentric shaft 121 is connected with the output shaft 111 of the driving motor 11 through a coupling 14, and the rotating cam 122 is sleeved on the free end of the eccentric shaft 121 and driven by the eccentric shaft 121 to rotate; the transmission device 13 comprises a sliding pair 131 and a vibration coupling member, the sliding pair 131 is connected with the vibration rod 31 of the high-frequency vibration member 3 through the vibration coupling member, and the sliding pair 131 is provided with a transmission hole 1311 for receiving the rotating cam 122. Preferably, the driving motor 11 can be a servo motor, which is convenient for use and control. Preferably, the vibration connector comprises a horizontal connecting rod 1321, a vertical connecting rod 1322 and a connecting collar 1323, the horizontal connecting rod 1321 is vertically connected with the vertical connecting rod 1322, the free end of the horizontal connecting rod 1321 is connected with the sliding pair 131, and the connecting collar 1323 is sleeved on the vibration rod 31 of the high-frequency vibration part 3 and is connected with the free end of the vertical connecting rod 1322; in the use state, the vibration link drives the vibration rod 31 to vibrate under the driving of the sliding pair 131. The vibration connecting piece is simple in structure, convenient to manufacture and low in manufacturing and assembling cost. Preferably, the connection end of the horizontal link 1321 is provided with a slot (not shown), and the vertical link 1322 is inserted in the slot and connected with the horizontal link 1321 by a connection bolt. Thus, the vertical connecting rod 1322 is clamped by the clamping groove, so that the connection stability between the vertical connecting rod 1322 and the horizontal connecting rod 1321 can be improved. Preferably, the free end of the horizontal link 1321 is provided with a connection rib 13211, the sliding pair 131 is provided with a connection rib groove (not shown), and the connection rib 13211 is inserted in the connection rib groove when the horizontal link 1321 is connected with the sliding pair 131. Thus, in the using process, the horizontal connecting rod 1321 can be prevented from shifting or dislocating relative to the sliding pair 131, namely, the vibration connecting piece can be prevented from shifting or dislocating relative to the sliding pair 131, so that the stability of secondary vibration transmission can be improved, and the stability of superposition vibration can be improved. Preferably, the vibrating rod 31 is sleeved with a front limiting plate 32 and a rear limiting plate 33, the front limiting plate 32 is far away from the rear end of the high-frequency vibrating member 3, and the rear limiting plate 33 is close to the rear end of the high-frequency vibrating member 3; the connection collar 1323 is located between the front limiting plate 32 and the rear limiting plate 33, and an elastic member is disposed between the connection collar 1323 and the front limiting plate 32 and the rear limiting plate 33, and the elastic member is sleeved on the vibration rod 31. Like this, the vibration connecting piece passes through the elastic component and transmits secondary vibration to vibrating arm 31 on, avoids the secondary vibration to produce the rigidity conflict with the basic vibration in the high-frequency vibration piece 3 production, and directional stability when guaranteeing the secondary vibration transmission alleviates the impact force when vibration superposition time, makes the vibration superposition process more steady to improve super smart effect of super smart machine. Preferably, the elastic member includes an outer elastic member 341 and an inner elastic member 342, and the inner elastic member 342 is inserted in the outer elastic member 341. Therefore, the secondary vibration is transmitted by utilizing the two layers of elastic parts, and the stability of the vibration superposition process can be further improved. Preferably, the outer elastic member 341 and the inner elastic member 342 may be flexible springs, which is simple and convenient to select. Preferably, the connection collar 1323 is provided at both sides with the ring beads 13231 with the ring beads 13231 interposed between the outer elastic member 341 and the inner elastic member 342. Therefore, when secondary vibration is transmitted, the inner elastic piece 342 and the outer elastic piece 341 can be prevented from interfering with each other due to stress deformation, and the stability of vibration superposition can be prevented from being influenced. Preferably, the free end of the vertical link 1322 is provided with a clamping groove (not shown), the outer edge of the connection collar 1323 is provided with a connection plate 13232, and the connection plate 13232 is inserted into the clamping groove and connected with the vertical link 1322 through a connection bolt (not shown); the vertical link 1322 is provided with a slide hole (not shown) into which a slide rod 35 parallel to the vibration rod 31 is inserted, and both ends of the slide rod 35 are fixedly connected to the housing 36 of the high-frequency vibrating member 3. Thus, the connection plate 13232 of the connection collar 1323 is inserted into the clamping groove of the vertical link 1322, so that the connection stability between the connection collar 1323 and the vertical link 1322 can be improved; the vertical connecting rod 1322 is provided with a sliding hole for inserting the sliding rod 35, so that the vertical connecting rod 1322 can slide on the sliding rod 35, and the transmission device 13 can be prevented from being dislocated in the use process to influence the vibration transmission and the superposition effect. Preferably, a linear bearing 13221 is disposed in the slide hole, and the linear bearing 13221 is disposed on the slide rod 35. Therefore, when the vertical connecting rod 1322 slides on the sliding rod 35, the abrasion and deformation of the sliding hole on the vertical connecting rod 1322 can be avoided, the transmission stability of the transmission device 13 is influenced, and even the superfinishing effect of the superfinishing machine is influenced.

As shown in fig. 1 and 2, the connecting bracket 2 includes an upper connecting plate 21, a lower connecting plate 22 and a middle connecting plate 23, wherein the upper connecting plate 21 and the lower connecting plate 22 are connected with the middle connecting plate 23 at two ends of the middle connecting plate 23 to form a U-shaped structure; a supporting through hole 211 is arranged at the free end of the upper connecting plate 21, the driving motor 11 is clamped on the upper connecting plate 21, and the output shaft 111 of the driving motor 11 passes through the supporting through hole 211; the free end of the lower connecting plate 22 is provided with a mounting hole 221, the inner wall of the mounting hole 221 is provided with a support table 2211 and a pressing groove (not shown in the figure), the eccentric shaft 121 is sleeved with a fixed block 123, the fixed block 123 is pressed on the support table 221, and a pressing ring 124 for pressing the fixed block 123 is arranged in the pressing groove; the middle connecting plate 23 is attached to the mounting frame 4 outside the high-frequency vibrating piece 3 and fixed to the mounting frame 4 through a connecting bolt. The connecting bracket 2 has simple structure, convenient manufacture and low cost, and is simple and convenient to connect and assemble with the high-frequency vibrating piece 3, the driving motor 11 and the cam piece 12. Preferably, the compression ring 124 is formed by a combination of two semi-circular rings. Thus, the press ring 124 is convenient to disassemble and assemble.

The vibration mechanism utilizes the driving motor to drive the cam part to rotate and convert the rotary motion into secondary vibration, and utilizes the transmission device to transmit the secondary vibration to the high-frequency vibration part and superpose the secondary vibration on the basic vibration generated by the high-frequency vibration part to form superposed vibration, so that the frequency of the superposed vibration is adjusted by adjusting the rotating speed of the driving motor, the amplitude of the superposed vibration is adjusted by adjusting the eccentric shaft and the rotating cam, the vibration frequency and the amplitude of the superposed vibration can be further selected according to the requirement, the requirement of special profile curve on the workpiece machined by the superfinishing machine is met, and the superfinishing effect of the superfinishing machine is improved. In addition, the vibration mechanism is provided with the driving motor, the cam part and the transmission device only on the original high-frequency vibration part of the superfinishing machine, and has the advantages of simple structure, convenient manufacture, easy installation and debugging and good economic benefit.

Claims

1. A vibration mechanism is characterized by comprising a secondary vibration device and a connecting bracket, wherein the secondary vibration device comprises a driving motor, a cam part and a transmission device, and the driving motor is fixedly arranged on a high-frequency vibration part through the connecting bracket and is close to the rear end of the high-frequency vibration part; the cam part comprises an eccentric shaft and a rotating cam, the eccentric shaft is connected with an output shaft of the driving motor through a coupler, and the rotating cam is sleeved on the free end of the eccentric shaft and driven to rotate by the eccentric shaft; the transmission device comprises a sliding pair and a vibration connecting piece, the sliding pair is connected with a vibration rod of the high-frequency vibration piece through the vibration connecting piece, and a transmission hole for accommodating the rotating cam in a plug-in mounting mode is formed in the sliding pair.

2. The vibration mechanism according to claim 1, wherein the vibration connecting member comprises a horizontal connecting rod, a vertical connecting rod and a connecting collar, the horizontal connecting rod is vertically connected with the vertical connecting rod, the free end of the horizontal connecting rod is connected with the sliding pair, and the connecting collar is sleeved on the vibration rod of the high-frequency vibration member and is connected with the free end of the vertical connecting rod; in the using state, the vibration connecting piece drives the vibration rod to vibrate under the driving of the sliding pair.

3. The vibration mechanism according to claim 2, wherein a front retainer plate and a rear retainer plate are fitted over the vibration rod, the front retainer plate being away from the rear end of the high-frequency vibrating member, and the rear retainer plate being close to the rear end of the high-frequency vibrating member; the connecting sleeve ring is positioned between the front limiting plate and the rear limiting plate, an elastic part is arranged between the connecting sleeve ring and the front limiting plate and between the rear limiting plates, and the elastic part is sleeved on the vibrating rod.

4. The vibratory mechanism of claim 3 wherein the resilient member comprises an outer resilient member and an inner resilient member, and wherein the inner resilient member is inserted into the outer resilient member.

5. The vibration mechanism according to claim 4, wherein the coupling collar is provided with a ring bead on both sides thereof, and the ring bead is interposed between the outer elastic member and the inner elastic member.

6. The vibration mechanism according to any one of claims 2 to 5, wherein the free end of the vertical link is provided with a clamping groove, the outer edge of the connecting collar is provided with a connecting plate, and the connecting plate is inserted into the clamping groove and connected with the vertical link through a connecting bolt; and a sliding hole is formed in the vertical connecting rod, a sliding rod parallel to the vibrating rod is inserted in the sliding hole, and two ends of the sliding rod are fixedly connected with a shell of the high-frequency vibrating piece.

7. The vibration mechanism as claimed in claim 6, wherein the connecting end of the horizontal link is provided with a catching groove, and the vertical link is inserted in the catching groove and connected with the horizontal link by a connecting bolt.

8. The vibration mechanism according to claim 7, wherein the free end of the horizontal link is provided with a connecting rib, the sliding pair is provided with a connecting rib groove, and the connecting rib is inserted into the connecting rib groove when the horizontal link is connected with the sliding pair.

9. The vibration mechanism according to any one of claims 1 to 5, wherein the connecting bracket comprises an upper connecting plate, a lower connecting plate and a middle connecting plate, wherein the upper connecting plate and the lower connecting plate are connected with the middle connecting plate at two ends of the middle connecting plate to form a U-shaped structure; a supporting through hole is formed in the free end of the upper connecting plate, the driving motor is clamped on the upper connecting plate, and an output shaft of the driving motor penetrates through the supporting through hole; the free end of the lower connecting plate is provided with a mounting hole, the inner wall of the mounting hole is provided with a supporting table and a pressing groove, the eccentric shaft is sleeved with a fixed block, the fixed block is pressed on the supporting table, and a pressing ring for pressing the fixed block is arranged in the pressing groove; the middle connecting plate is attached to an installation frame outside the high-frequency vibration piece and fixed to the installation frame through a connecting bolt.

10. A superfinishing machine equipped with a vibration mechanism according to any one of claims 1 to 9.