CN221048177U - Planetary grinding head grinding radius compensation device - Google Patents
Planetary grinding head grinding radius compensation device Download PDFInfo
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- CN221048177U CN221048177U CN202322151368.5U CN202322151368U CN221048177U CN 221048177 U CN221048177 U CN 221048177U CN 202322151368 U CN202322151368 U CN 202322151368U CN 221048177 U CN221048177 U CN 221048177U
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Abstract
The utility model belongs to the field of cambered surface cam processing, and relates to a planetary grinding head grinding radius compensation device. The device comprises a first eccentric shaft sleeve assembly, wherein the first eccentric shaft sleeve assembly is connected with a second eccentric shaft sleeve, the outer circle of the second eccentric shaft sleeve is coaxially arranged with the inner circle of the first eccentric shaft sleeve assembly, and the first eccentric shaft sleeve assembly transmits power to the second eccentric shaft sleeve. The main shaft is arranged in the second eccentric shaft sleeve, the main shaft and the inner circle of the second eccentric shaft sleeve are coaxially arranged, and the first eccentric shaft sleeve assembly and the second eccentric shaft sleeve are matched together to enable the main shaft to generate offset when rotating, so that the grinding radius of the grinding wheel is increased. The grinding radius of the grinding wheel is adjusted according to the abrasion condition of the grinding wheel so as to meet the grinding requirement, the radius compensation function of the grinding wheel is realized, and the machining precision and the machining quality of the cambered surface cam are improved. The device improves the utilization rate of the grinding wheel, reduces the production cost, avoids the phenomenon of frequent replacement of the grinding wheel in the processing process, and improves the processing efficiency of the cambered surface cam.
Description
Technical Field
The utility model belongs to the field of cambered surface cam processing, and relates to a planetary grinding head grinding radius compensation device.
Background
With the continuous development of society, automatic machine tools and automatic production lines are increasingly widely used; existing automated machine tools and automated production lines often require mechanisms to perform periodic indexing and indexing actions and intermittent movements with momentary stops or dead zones, as required by the production process. The traditional intermittent mechanism for realizing the periodic stopping or indexing action is only suitable for low-speed occasions, and cannot meet the requirements of fast beat and high-precision indexing, and the cambered surface indexing cam mechanism just overcomes the defects of the traditional intermittent mechanism.
At present, equal-diameter machining and non-equal-diameter machining are two main forms of numerical control machining of cambered cams. The equal-diameter machining has no theoretical error, but the equal-diameter machining has the problems of high time consumption, high cost and the like because frequent tool replacement is required due to severe tool wear, and the machining efficiency is affected. Compared with equal-diameter machining, non-equal-diameter machining can effectively improve the machining efficiency of the cambered surface cam and reduce the production cost, but theoretical errors exist in non-equal-diameter machining, and machining precision and machining quality are affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a planetary grinding head grinding radius compensation device, wherein the grinding wheel radius has a compensation function, so that the processing efficiency of the cambered surface cam is improved, and the processing precision and the processing quality of the cambered surface cam are improved.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
The utility model discloses a planetary grinding head grinding radius compensation device which comprises a first eccentric shaft sleeve assembly, wherein the first eccentric shaft sleeve assembly is connected with a second eccentric shaft sleeve, the outer circle of the second eccentric shaft sleeve is coaxially arranged with the inner circle of the first eccentric shaft sleeve assembly, a main shaft is embedded in the second eccentric shaft sleeve, the main shaft is coaxially arranged with the inner circle of the second eccentric shaft sleeve, and a grinding wheel is arranged on the main shaft.
Further, the first eccentric shaft sleeve assembly comprises a shaft sleeve, a first gear is arranged in the shaft sleeve, the first gear is connected with the second eccentric shaft sleeve through a first transmission shaft, the first gear is coaxially arranged with the outer circle of the second eccentric shaft sleeve, and the first gear is connected with the output end of the first motor through a first transmission device.
Further, the first transmission device comprises a first belt wheel, a transmission shaft of the first belt wheel is connected with the output end of the first motor, the first belt wheel is connected with a second belt wheel and a third belt wheel through transmission belts respectively, the second belt wheel is connected with a second gear through a second transmission shaft, the second gear is meshed with the first gear, the third belt wheel is connected with a third gear through a third transmission shaft, and the third gear is meshed with the first gear.
Further, a spline structure is arranged on the third transmission shaft, a gear moving frame is sleeved on the spline structure, the gear moving frame is connected with a ball screw, and the ball screw is connected with the output end of the second motor.
Further, the spline structure comprises a spline hub, the spline hub is connected with the third gear through a turntable bearing, the spline hub is connected with the turntable bearing through a spline, the turntable bearing is arranged in the gear moving frame in a penetrating mode, the spline hub is connected with a spline shaft, and the spline shaft is connected with the third transmission shaft through an expansion sleeve.
Further, the ball screw is coaxially arranged with the third transmission shaft.
Further, the grinding wheel is located at the end of the spindle.
Further, the main shaft is connected with the output end of the third motor through the second transmission device.
Further, the second transmission device comprises a fifth bevel gear and a fourth bevel gear, the fifth bevel gear is meshed with the fourth bevel gear, and an output shaft of the fourth bevel gear is connected with the main shaft.
The utility model discloses a working method of a planetary grinding head grinding radius compensation device, which comprises the following steps:
adjusting the eccentric amount of the first eccentric shaft sleeve assembly;
The positions of the main shaft, the second eccentric shaft sleeve and the first eccentric shaft sleeve assembly are adjusted, so that the main shaft and the inner circle of the second eccentric shaft sleeve are coaxially arranged, and the outer circle of the second eccentric shaft sleeve and the inner circle of the first eccentric shaft sleeve assembly are coaxially arranged;
The driving main shaft and the second eccentric shaft sleeve change the surrounding center of the main shaft through the eccentric arrangement of the second eccentric shaft sleeve and the first eccentric shaft sleeve assembly, so as to change the grinding radius of the grinding wheel.
Compared with the prior art, the utility model has the following beneficial effects:
The utility model discloses a planetary grinding head grinding radius compensation device which comprises a first eccentric shaft sleeve assembly, wherein the first eccentric shaft sleeve assembly is connected with a second eccentric shaft sleeve, the outer circle of the second eccentric shaft sleeve is coaxially arranged with the inner circle of the first eccentric shaft sleeve assembly, the first eccentric shaft sleeve assembly is used for limiting the position of the second eccentric shaft sleeve, and meanwhile, the first eccentric shaft sleeve assembly transmits power to the second eccentric shaft sleeve. The second eccentric shaft sleeve is embedded with a main shaft, the main shaft and the inner circle of the second eccentric shaft sleeve are coaxially arranged, and the first eccentric shaft sleeve assembly and the second eccentric shaft sleeve are matched together to limit the position of the main shaft, so that the rotation of the main shaft generates an offset. The main shaft is provided with a grinding wheel, and the grinding wheel is driven by the main shaft to increase the grinding radius of the grinding wheel. During actual production, the grinding radius of the grinding wheel can be adjusted according to the abrasion condition of the grinding wheel so as to meet the grinding requirement, realize the radius compensation function of the grinding wheel and improve the machining precision and quality of the cambered surface cam. The device improves the utilization rate of the grinding wheel, reduces the production cost, avoids the phenomenon of frequent replacement of the grinding wheel in the processing process, and improves the processing efficiency of the cambered surface cam.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the first eccentric sleeve assembly of the present utility model;
FIG. 3 is a schematic illustration of the spline construction of the present utility model;
FIG. 4 is a schematic view of the eccentric sleeve position of the present utility model;
FIG. 5 is a schematic view of the change in the position of the grinding wheel according to the present utility model;
fig. 6 is a circular position distribution diagram of an eccentric sleeve according to the present utility model.
Wherein: 1. grinding wheel; 2. a main shaft; 3. a second eccentric sleeve; 4. a first gear; 5. a first eccentric sleeve assembly; 6. a second gear; 7. a first motor; 8. a transmission belt; 8-1, a first belt wheel; 8-2, a second belt pulley; 8-3, a third belt wheel; 9. a fourth helical gear; 10. a third motor; 11. a fifth helical gear; 12. a second motor; 13. a ball screw; 14. a spline structure; 15. a third gear; 16. a shaft sleeve; 17. a turntable bearing; 18. a gear moving rack; 19. a spline hub; 20. a spline shaft; 21. an expansion sleeve; 22. a first transmission; 23. and a second transmission.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model is described in further detail below with reference to the attached drawing figures:
Referring to fig. 1, the utility model discloses a planetary grinding head grinding radius compensation device, which comprises a first eccentric shaft sleeve assembly 5, wherein the first eccentric shaft sleeve assembly 5 is connected with a second eccentric shaft sleeve 3, the outer circle of the second eccentric shaft sleeve 3 is coaxially arranged with the inner circle of the first eccentric shaft sleeve assembly 5, the first eccentric shaft sleeve assembly 5 is used for limiting the position of the second eccentric shaft sleeve 3, during actual production, a power source drives the first eccentric shaft sleeve assembly 5, and the first eccentric shaft sleeve assembly 5 transmits power to the second eccentric shaft sleeve 3. The second eccentric shaft sleeve 3 is embedded with a main shaft 2, the main shaft 2 and the inner circle of the second eccentric shaft sleeve 3 are coaxially arranged, the position of the main shaft 2 is limited by the cooperation of the first eccentric shaft sleeve assembly 5 and the second eccentric shaft sleeve 3, so that the rotation of the main shaft 2 generates offset, and the position of the eccentric shaft sleeve is shown in fig. 4. The main shaft 2 is provided with the grinding wheel 1, and during actual production, the power source drives the main shaft 2, and then the main shaft 2 drives the grinding wheel 1, so that the rotation of the grinding wheel 1 generates offset, the grinding radius of the grinding wheel 1 is increased, and the radius compensation function of the grinding wheel is realized. During actual production, the grinding radius of the grinding wheel 1 can be adjusted according to the abrasion condition of the grinding wheel 1 so as to meet the grinding requirement, and the machining precision and the machining quality of the cambered surface cam are improved. Meanwhile, the device improves the utilization rate of the grinding wheel 1, reduces the production cost, avoids the phenomenon of frequently replacing the grinding wheel 1 in the processing process, and improves the processing efficiency of the cambered surface cam.
In another possible embodiment of the utility model, see fig. 1, the following is adapted as the case may be. The first eccentric shaft sleeve assembly 5, the second eccentric shaft sleeve 3 is connected to the first eccentric shaft sleeve assembly 5, the excircle of the second eccentric shaft sleeve 3 and the inner circle of the first eccentric shaft sleeve assembly 5 are coaxially arranged, the main shaft 2 is embedded in the second eccentric shaft sleeve 3, the main shaft 2 and the inner circle of the second eccentric shaft sleeve 3 are coaxially arranged, and the main shaft 2 is provided with the grinding wheel 1.
The first eccentric shaft sleeve assembly 5 is used for limiting the position of the second eccentric shaft sleeve 3, and in actual production, the power source drives the first eccentric shaft sleeve assembly 5, and the first eccentric shaft sleeve assembly 5 transmits power to the second eccentric shaft sleeve 3. Simultaneously, the first eccentric shaft sleeve assembly 5 and the second eccentric shaft sleeve 3 are matched together to limit the position of the main shaft 2, so that the rotation of the main shaft 2 generates offset.
During actual production, the power source drives the main shaft 2, and then the main shaft 2 drives the grinding wheel 1, so that the offset of the grinding wheel 1 is generated in the rotation process, the grinding radius of the grinding wheel 1 is increased, and the radius compensation function of the grinding wheel is realized. After the grinding wheel 1 is further worn, the first eccentric shaft sleeve assembly 5 and the second eccentric shaft sleeve 3 can be adjusted again, so that the rotation offset of the main shaft 2 is changed, and the aim of recycling the grinding wheel 1 is fulfilled. During actual production, the grinding radius of the grinding wheel 1 can be adjusted according to the abrasion condition of the grinding wheel 1 so as to meet the grinding requirement, and the machining precision and the machining quality of the cambered surface cam are improved. Meanwhile, the device improves the utilization rate of the grinding wheel 1, reduces the production cost, avoids the phenomenon of frequently replacing the grinding wheel 1 in the processing process, and improves the processing efficiency of the cambered surface cam.
Embodiment one:
referring to fig. 1, the embodiment discloses a planetary grinding head grinding radius compensation device, which comprises a first eccentric shaft sleeve assembly 5, wherein the first eccentric shaft sleeve assembly 5 is connected with a second eccentric shaft sleeve 3, the outer circle of the second eccentric shaft sleeve 3 is coaxially arranged with the inner circle of the first eccentric shaft sleeve assembly 5, a main shaft 2 is embedded in the second eccentric shaft sleeve 3, the main shaft 2 is coaxially arranged with the inner circle of the second eccentric shaft sleeve 3, and a grinding wheel 1 is arranged on the main shaft 2.
Referring to fig. 1, the first eccentric shaft sleeve assembly 5 includes a shaft sleeve 16, a first gear 4 is disposed in the shaft sleeve 16, the first gear 4 is connected with the second eccentric shaft sleeve 3 through a first transmission shaft, the first gear 4 is coaxially disposed with an outer circle of the second eccentric shaft sleeve 3, and the first gear 4 is connected with an output end of the first motor 7 through a first transmission device 22.
The first transmission device 22 comprises a first belt wheel 8-1, a transmission shaft of the first belt wheel 8-1 is connected with the output end of the first motor 7, the first belt wheel 8-1 is connected with a second belt wheel 8-2 and a third belt wheel 8-3 through transmission belts 8 respectively, the second belt wheel 8-2 is connected with a second gear 6 through a second transmission shaft, the second gear 6 is meshed with the first gear 4, the third belt wheel 8-3 is connected with a third gear 15 through a third transmission shaft, and the third gear 15 is meshed with the first gear 4. The first gear 4 is limited by the second gear 6 and the third gear 15, so that the rotation axis of the second eccentric shaft sleeve 3 is limited. The sizes of the first gear 4, the second gear 6, the third gear 15, the first belt wheel 8-1, the second belt wheel 8-2 and the third belt wheel 8-3 can be adjusted according to the requirements in actual production.
Preferably, the first gear 4, the second gear 6 and the third gear 15 are all helical gears, and have the advantages of good meshing performance, large overlapping ratio, compact structure and the like.
Referring to fig. 2, a spline structure 14 is provided on the third transmission shaft, and power of the third transmission shaft is transmitted to a third gear 15 through the spline structure 14. The spline structure 14 is sleeved with a gear moving frame 18, the gear moving frame 18 is connected with a ball screw 13, and the ball screw 13 is connected with the output end of the second motor 12. The ball screw 13 cooperates with the gear shifting carriage 18 to realize that the third transmission shaft has a degree of freedom of circumferential rotation for adjusting the position of the third gear 15. The provision of the spline structure 14 and the gear shifting cage 18 allows the third gear 15 to have both a degree of freedom of circumferential rotation and a degree of freedom of axial movement without interference.
Referring to fig. 3, the spline structure 14 includes a spline hub 19, the spline hub 19 is connected with the third gear 15 through a turntable bearing 17, the spline hub 19 is connected with the turntable bearing 17 through a spline, the turntable bearing 17 is arranged in a gear moving frame 18 in a penetrating manner, the spline hub 19 is connected with a spline shaft 20, and the spline shaft 20 is connected with the third transmission shaft through an expansion sleeve 21.
The ball screw 13 is arranged coaxially with the third drive shaft.
Embodiment two:
referring to fig. 1, the embodiment discloses a planetary grinding head grinding radius compensation device, which comprises a first eccentric shaft sleeve assembly 5, wherein the first eccentric shaft sleeve assembly 5 is connected with a second eccentric shaft sleeve 3, the outer circle of the second eccentric shaft sleeve 3 is coaxially arranged with the inner circle of the first eccentric shaft sleeve assembly 5, a main shaft 2 is embedded in the second eccentric shaft sleeve 3, the main shaft 2 is coaxially arranged with the inner circle of the second eccentric shaft sleeve 3, and a grinding wheel 1 is arranged on the main shaft 2.
The grinding wheel 1 is located at the end of the spindle 2.
The main shaft (2) is connected with the output end of the third motor (10) through a second transmission device (23). The third motor 10 drives the spindle 2 to rotate through the second transmission device 23, and further drives the grinding wheel 1 to rotate.
The second transmission device 23 comprises a fifth helical gear 11 and a fourth helical gear 9, the fifth helical gear 11 is meshed with the fourth helical gear 9, and an output shaft of the fourth helical gear 9 is connected with the main shaft 2. The size of the fifth bevel gear 11 and the fourth bevel gear 9 can be adjusted according to the requirements in actual production.
Embodiment III:
Referring to fig. 1, the present embodiment discloses a planetary grinding head grinding radius compensation device, which comprises a grinding wheel 1, an electric spindle 2, a second eccentric shaft sleeve 3, a first gear 4, a first eccentric shaft sleeve assembly 5, a second gear 6, a first motor 7, a driving belt 8, a fourth helical gear 9, a third motor 10, a fifth helical gear 11, a second motor 12, a ball screw 13, a spline structure 14 and a third gear 15.
The electric spindle 2 is matched with the second eccentric shaft sleeve 3, the second eccentric shaft sleeve 3 is matched with the first eccentric shaft sleeve assembly 5, and the central axis of the whole mechanism is the outer circle central axis of the first eccentric shaft sleeve assembly 5. In the initial state, the center of the motorized spindle 2 coincides with the central axis of the outer circle of the first eccentric shaft sleeve assembly 5. When the grinding radius compensation is carried out, the second eccentric shaft sleeve 3 rotates around the central axis of the inner circle of the first eccentric shaft sleeve assembly 5, so that the center of the grinding wheel 1 and the center of the whole planetary grinding head generate offset, the grinding radius of the grinding wheel is enlarged, and the function of the grinding wheel radius compensation is achieved after the grinding wheel is worn and dressed. Because the helical gear has the advantages of good meshing performance, large contact ratio, compact structure and the like, the planetary grinding head adopts helical gear transmission for both the first eccentric shaft sleeve assembly 5 and the second eccentric shaft sleeve 3. The bevel gear transmission structure at the second eccentric shaft sleeve 3 is a key structure of the special planetary grinding head grinding wheel radius compensation structure for the cambered surface cam, so that the bevel gear clearance compensation structure is designed at the position, is an automatic compensation structure, and is beneficial to improving the machining precision and the service life of the planetary grinding head.
In the planetary grinding head grinding radius compensation structure, the third gear 15 can drive the first gear 4 to rotate together with the second gear 6 through spline transmission, so that the second eccentric shaft sleeve 3 and the first eccentric shaft sleeve assembly 5 generate angular displacement, the planetary grinding head grinding radius compensation function is realized, the third gear 15 can be driven by a ball screw to generate axial displacement, the profile surfaces on two sides of the first gear 4 are respectively contacted with the profile surfaces of the second gear 6 and the third gear 15, and the automatic gap elimination function of a bevel gear is realized, so that a special connection mode is needed between the third gear 15 and a third transmission shaft.
The third gear 15 and the third transmission shaft are connected in a special connection mode, namely, the spline end of the third gear 15 is connected with the spline hub 19, meanwhile, the spline hub 19 is connected with the spline shaft 20, the spline shaft 20 is connected with the shaft by adopting the expansion sleeve 21, and the third gear 15 can rotate circumferentially through the connection. In order to ensure that the third gear 15 can axially move while meeting the requirement of circumferential rotation, a turntable bearing 17 is connected between the third gear 15 and a gear moving frame 18, an outer ring of the turntable bearing 17 is connected with the gear moving frame 18, an inner ring of the turntable bearing 17 is connected with the third gear 15, and the addition of the turntable bearing 17 enables the third gear 15 to have the freedom degree of circumferential rotation and the freedom degree of axial movement, and interference does not occur.
Embodiment III:
Referring to fig. 5 and 6, the working principle of the present utility model will be further described in this embodiment.
When the eccentric amounts of the two eccentric shafts are selected and equal, namely e 1＝e2. When the special planetary grinding head for the cambered cam is in an initial state, referring to fig. 5, the axis of the grinding wheel 1 coincides with the grinding center of the whole device, the axis of the outer circle of the first eccentric shaft sleeve assembly 5 is the axis of the mechanism, the axis of the inner circle of the first eccentric shaft sleeve assembly 5 coincides with the axis of the outer circle of the second eccentric shaft sleeve 3, and the axis of the inner circle of the second eccentric shaft sleeve 3 coincides with the axis of the grinding wheel. As shown in fig. 5, the planetary grinding head compensation motion is: after the second eccentric shaft sleeve 3 rotates for a certain angle relative to the first eccentric shaft sleeve assembly 5, the grinding wheel axis O 2 and the planetary grinding head grinding center O are offset, so that the grinding outer diameter increase is equal to the abrasion loss of the grinding wheel, and the grinding radius compensation effect is achieved.
Let the wheel radius be r, oo2=a, from the geometrical relationship in fig. 6:
a2＝(e1-e2cos(α2))2+(e2sin(α2))2
Wherein: α 2 is the rotation angle of the eccentric shaft ii, and when α 2 =0°, the whole device is in the initial position.
The grinding radius of the planetary grinding head can be expressed as:
When the planetary grinding head performs grinding radius compensation, the relation between the compensation amount e of the grinding radius and the rotation angle alpha 2 of the second eccentric sleeve 3 can be expressed as follows:
Wherein:
e is the compensation amount of grinding radius;
e 1 is the eccentric amount of the eccentric shaft I;
e 2 is the eccentric amount of the second eccentric sleeve 3;
Alpha 20 is the angular displacement of the second eccentric sleeve 3 in the initial state;
Alpha 2 is the angular displacement of the eccentric shaft II after compensation;
When e 1＝e2 and α 20 =0°, the relation between the compensation amount e of the grinding radius and the rotation angle α 2 of the second eccentric sleeve 3 can be simplified as:
Wherein:
delta alpha is the difference of the angular displacement of the rotation of the eccentric shaft II.
Because the bevel gear has the advantages of good meshing performance, large contact ratio, compact structure and the like, the transmission mode of the planetary grinding head grinding radius compensation structure mainly adopts a bevel gear transmission mode. The simplified formula of the relation between the compensation quantity e of the grinding radius and the rotation angle alpha 2 of the second eccentric shaft sleeve 3 is the relation between the angular displacement of the driven bevel gear and the compensation quantity of the grinding wheel in the bevel gear group, and the relation between the angular displacement of the driving bevel gear of the bevel gear group and the compensation quantity of the grinding radius is obtained according to the meshing characteristics of the bevel gears:
Wherein:
Alpha 1 is the rotation angular displacement of the driving bevel gear;
i is the gear ratio of the bevel gear set.
Based on the structure, the utility model discloses a working method of a planetary grinding head grinding radius compensation device, which comprises the following steps:
Adjusting the eccentric amount of the first eccentric shaft sleeve assembly 5;
The positions of the main shaft 2, the second eccentric shaft sleeve 3 and the first eccentric shaft sleeve assembly 5 are adjusted, so that the main shaft 2 and the inner circle of the second eccentric shaft sleeve 3 are coaxially arranged, and the outer circle of the second eccentric shaft sleeve 3 and the inner circle of the first eccentric shaft sleeve assembly 5 are coaxially arranged;
The driving main shaft 2 and the second eccentric shaft sleeve 3 change the surrounding center of the main shaft 2 through the eccentric arrangement of the second eccentric shaft sleeve 3 and the first eccentric shaft sleeve assembly 5, so as to change the grinding radius of the grinding wheel 1.
Preferably, the method of the utility model is as follows: the eccentric amount of the first eccentric sleeve assembly 5 is adjusted, and the first eccentric sleeve assembly 5 is used for limiting the position of the second eccentric sleeve 3. The positions of the main shaft 2, the second eccentric shaft sleeve 3 and the first eccentric shaft sleeve assembly 5 are adjusted, so that the main shaft 2 and the inner circle of the second eccentric shaft sleeve 3 are coaxially arranged, the outer circle of the second eccentric shaft sleeve 3 and the inner circle of the first eccentric shaft sleeve assembly 5 are coaxially arranged, and the eccentric amount of the whole device is adjusted. The driving main shaft 2 and the second eccentric shaft sleeve 3 change the surrounding center of the main shaft 2 through the eccentric arrangement of the second eccentric shaft sleeve 3 and the first eccentric shaft sleeve assembly 5, so as to change the grinding radius of the grinding wheel 1. During actual production, the power source drives the main shaft 2, and then the main shaft 2 drives the grinding wheel 1, so that the offset of the grinding wheel 1 is generated in the rotation process, the grinding radius of the grinding wheel 1 is increased, and the radius compensation function of the grinding wheel is realized. After the grinding wheel 1 is further worn, the first eccentric shaft sleeve assembly 5 and the second eccentric shaft sleeve 3 can be adjusted again, so that the rotation offset of the main shaft 2 is changed, and the aim of recycling the grinding wheel 1 is fulfilled. The method improves the utilization rate of the grinding wheel 1, avoids the phenomenon of frequently replacing the grinding wheel 1 in the processing process, improves the processing efficiency of the cambered surface cam, and improves the processing precision and the processing quality of the cambered surface cam.
The above is only for illustrating the technical idea of the present utility model, and the protection scope of the present utility model is not limited by this, and any modification made on the basis of the technical scheme according to the technical idea of the present utility model falls within the protection scope of the claims of the present utility model.
Claims (7)
1. The planetary grinding head grinding radius compensation device is characterized by comprising a first eccentric shaft sleeve assembly (5), wherein the first eccentric shaft sleeve assembly (5) is connected with a second eccentric shaft sleeve (3), the outer circle of the second eccentric shaft sleeve (3) is coaxially arranged with the inner circle of the first eccentric shaft sleeve assembly (5), a main shaft (2) is embedded in the second eccentric shaft sleeve (3), the main shaft (2) is coaxially arranged with the inner circle of the second eccentric shaft sleeve (3), and a grinding wheel (1) is arranged on the main shaft (2);
The first eccentric shaft sleeve assembly (5) comprises a shaft sleeve (16), a first gear (4) is arranged in the shaft sleeve (16), the first gear (4) is connected with the second eccentric shaft sleeve (3) through a first transmission shaft, the first gear (4) is coaxially arranged with the outer circle of the second eccentric shaft sleeve (3), and the first gear (4) is connected with the output end of the first motor (7) through a first transmission device (22);
The first transmission device (22) comprises a first belt wheel (8-1), a transmission shaft of the first belt wheel (8-1) is connected with the output end of the first motor (7), the first belt wheel (8-1) is connected with a second belt wheel (8-2) and a third belt wheel (8-3) through transmission belts (8), the second belt wheel (8-2) is connected with a second gear (6) through the second transmission shaft, the second gear (6) is meshed with the first gear (4), the third belt wheel (8-3) is connected with a third gear (15) through the third transmission shaft, and the third gear (15) is meshed with the first gear (4).
2. A planetary grinding head grinding radius compensation device according to claim 1, characterized in that the third transmission shaft is provided with a spline structure (14), the spline structure (14) is sleeved with a gear moving frame (18), the gear moving frame (18) is connected with a ball screw (13), and the ball screw (13) is connected with the output end of the second motor (12).
3. A planetary grinding head grinding radius compensation device according to claim 2, characterized in that the spline structure (14) comprises a spline hub (19), the spline hub (19) is connected with the third gear (15) through a turntable bearing (17), the spline hub (19) is connected with the turntable bearing (17) through a spline, the turntable bearing (17) is arranged in the gear moving frame (18) in a penetrating way, the spline hub (19) is connected with a spline shaft (20), and the spline shaft (20) is connected with the third transmission shaft through an expansion sleeve (21).
4. A planetary grinding head grinding radius compensation device according to claim 3, characterized in that the ball screw (13) is arranged coaxially with the third drive shaft.
5. A planetary grinding head grinding radius compensation device according to claim 1, characterized in that the grinding wheel (1) is located at the end of the spindle (2).
6. A planetary grinding head grinding radius compensation device according to claim 5, characterized in that the main shaft (2) is connected to the output of the third motor (10) via a second transmission (23).
7. A planetary grinding head grinding radius compensation device according to claim 6, characterized in that the second transmission means (23) comprises a fifth bevel gear (11) and a fourth bevel gear (9), the fifth bevel gear (11) being in engagement with the fourth bevel gear (9), the output shaft of the fourth bevel gear (9) being connected to the main shaft (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151368.5U CN221048177U (en) | 2023-08-10 | 2023-08-10 | Planetary grinding head grinding radius compensation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322151368.5U CN221048177U (en) | 2023-08-10 | 2023-08-10 | Planetary grinding head grinding radius compensation device |
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| Publication Number | Publication Date |
|---|---|
| CN221048177U true CN221048177U (en) | 2024-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202322151368.5U Active CN221048177U (en) | 2023-08-10 | 2023-08-10 | Planetary grinding head grinding radius compensation device |
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|---|---|
| CN (1) | CN221048177U (en) |
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2023
- 2023-08-10 CN CN202322151368.5U patent/CN221048177U/en active Active
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