CN213172493U - Wheel set ultrasonic strengthening drive assembly and flat bed numerical control machine tool - Google Patents

Abstract

The utility model relates to a drive assembly and flat lathe bed digit control machine tool are reinforceed to wheel pair supersound, drive assembly is reinforceed to wheel pair supersound includes a plurality of jack catch, a plurality of back shaft and a plurality of drive shaft. The jaws are arranged on a chuck of the flat-bed numerical control machine tool in a winding mode at intervals and can move in the radial direction of the chuck. After the wheel set ultrasonic strengthening drive assembly is assembled on a chuck of a flat lathe body numerical control machine tool, the jack catch moves along the radial direction of the chuck to drive a drive shaft to adjust the position, and when the drive shaft moves, the drive shaft can be abutted against the inner side of the edge of the wheel end face of the wheel set to clamp and fix the wheel set and can be separated from the inner side of the edge of the wheel end face of the wheel set to loosen the wheel set. Under the action of rotation driving of a main shaft of the numerical control machine tool with the flat lathe bed, the driving device and the wheel set can be driven to rotate together, so that ultrasonic strengthening machining of the wheel set can be completed, ultrasonic strengthening machining of the wheel set on the existing numerical control lathe with the flat lathe bed can be completed, and meanwhile, the numerical control lathe bed is simple in structure, low in cost and convenient to operate.

Description

Wheel set ultrasonic strengthening drive assembly and flat bed numerical control machine tool

Technical Field

The utility model relates to a wheel pair supersound is reinforceed technical field especially relates to a drive assembly and flat lathe bed digit control machine tool are reinforceed to wheel pair supersound.

Background

Wheelsets, such as truck wheelsets, train wheelsets, locomotive wheelsets, and the like, are important running parts of railway mobile equipment and are one of the key parts affecting the running safety of vehicles. It bears the entire load of the vehicle, alternately bears the rolling contact stresses, and has a very complex functional relationship with the rails, shoes, axles, and surrounding media, in a dynamic, alternating stress state.

After the wheel set is operated for a period of time, the tread of the wheel set is worn and needs to be turned, and turning is generally finished on a turning machine special for the wheel set. The wear rate of the tread of the new wheel surface is low after quenching treatment, and after two times of forging and repairing, the heat treatment hardening layer is worn off or turned, so that the hardness of the tread of the wheel is low and the wear is fast.

In order to reduce the abrasion rate of the wheel set tread, the wheel set tread is subjected to ultrasonic strengthening after turning. The ultrasonic strengthening can be completed on a wheel set turning machine tool, and the wheel set tread is inconvenient to be ultrasonically strengthened on a flat bed numerical control lathe. However, the number of the wheel set whirling machine tools is limited, and the cost of the wheel set whirling machine tools is expensive, which results in increased cost when the number of the wheel set whirling machine tools is increased.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to overcome the defect of prior art, provides a wheel set ultrasonic strengthening drive assembly and flat lathe bed digit control machine tool, and it can realize accomplishing the ultrasonic strengthening processing to the wheel set on current flat lathe bed digit control machine tool, and simple structure simultaneously, the cost is lower, convenient operation.

The technical scheme is as follows: a wheelset ultrasonically enhanced drive assembly, comprising: the clamping jaws are used for being wound on a chuck of the flat-bed numerical control machine tool at intervals and are also used for being movably arranged along the radial direction of the chuck; the wheel pair supporting device comprises a plurality of supporting shafts, a plurality of driving shafts, a plurality of supporting shafts and a plurality of clamping jaws in one-to-one correspondence, a plurality of supporting shafts are further connected with a plurality of driving shafts in one-to-one correspondence, and the driving shafts are used for being abutted to the inner sides of the edges of the end faces of the wheels of the wheel pair.

The wheel set ultrasonic strengthening driving assembly can be assembled on a chuck of an existing flat-bed numerical control machine tool, and moves along the radial direction of the chuck through a clamping jaw to drive a driving shaft to adjust the position, when the driving shaft moves, the driving shaft can be abutted against the inner side of the edge of the wheel end face of a wheel set to clamp and fix the wheel set, and can be separated from the inner side of the edge of the wheel end face of the wheel set to loosen the wheel set. When the driving shaft moves to the inner side of the edge of the wheel end face of the wheel pair to be abutted, the driving shaft applies preset pressure stress to the inner side of the edge of the wheel end face of the wheel pair, meanwhile, two tops of the flat bed body numerical control machine tool synchronously abut against the end faces of two wheel shafts of the wheel pair, so that under the action of rotation driving of a main shaft of the flat bed body numerical control machine tool, the driving device and the wheel pair can be driven to rotate together, and ultrasonic strengthening processing of the wheel pair can be completed. Therefore, the ultrasonic strengthening machining device can be used for completing ultrasonic strengthening machining on the wheel set on the existing numerical control lathe with the flat lathe bed, and is simple in structure, low in cost and convenient to operate.

In one embodiment, the wheel set ultrasonic strengthening driving assembly further comprises a plurality of adjusting mechanisms; the adjusting mechanisms are in one-to-one correspondence with the jaws and are used for driving the jaws to move in the radial direction of the chuck.

In one embodiment, the adjusting mechanism comprises a screw and a nut sleeved on the screw, the screw is rotatably arranged on the chuck, and the nut is connected with the jaws.

In one embodiment, the chuck is provided with a sliding groove along a radial direction, and the jaws are provided with a sliding block movably arranged in the sliding groove.

In one embodiment, a surface of the driving shaft, which is used for being abutted against the inner side of the edge of the end face of the wheel, is a conical surface or a circular arc surface.

In one embodiment, one end of the supporting shaft is detachably connected with the claw; the other end of the supporting shaft is detachably connected with the driving shaft.

In one embodiment, one end of the supporting shaft is detachably connected with the clamping jaw through a screw, a bolt, a pin or a clamping piece; the other end of the supporting shaft is detachably connected with the driving shaft through screws, bolts, pins or clamping pieces.

In one embodiment, the claw, the supporting shaft and the driving shaft are integrated; or the clamping jaw and the supporting shaft are of an integrated structure; alternatively, the support shaft and the drive shaft are integrated.

A numerical control machine tool with a flat lathe bed comprises a main shaft, two chucks and two wheel set ultrasonic strengthening driving components, wherein the two chucks are arranged at intervals oppositely; the spindle is connected with the chuck and used for driving the chuck to rotate; two drive assembly and two are reinforceed to wheel pair supersound the chuck one-to-one sets up, the jack catch is around establishing arranging in the correspondence at interval on the chuck, just the jack catch is followed the portable setting of radial direction of chuck.

Foretell flat lathe bed digit control machine tool assembles the wheel pair supersound on the chuck of current flat lathe bed digit control machine tool to remove to drive shaft adjusting position along the radial direction of chuck through the jack catch, both can carry out the centre gripping with the inboard conflict of the wheel terminal surface edge of wheel pair when the drive shaft removes and fix the wheel pair, can loosen the wheel pair with the inboard phase separation of the wheel terminal surface edge of wheel pair again. When the driving shaft moves to the inner side of the edge of the wheel end face of the wheel pair to be abutted, the driving shaft applies preset pressure stress to the inner side of the edge of the wheel end face of the wheel pair, meanwhile, two tops of the flat bed body numerical control machine tool synchronously abut against the end faces of two wheel shafts of the wheel pair, so that under the action of rotation driving of a main shaft of the flat bed body numerical control machine tool, the driving device and the wheel pair can be driven to rotate together, and ultrasonic strengthening processing of the wheel pair can be completed. Therefore, the ultrasonic strengthening machining device can be used for completing ultrasonic strengthening machining on the wheel set on the existing numerical control lathe with the flat lathe bed, and is simple in structure, low in cost and convenient to operate.

In one embodiment, the flat-bed numerical control machine tool further comprises two apexes oppositely arranged at intervals; the main shaft is connected with the tip and used for driving the tip to rotate; when the two apexes respectively and synchronously abut against the end faces of the two wheels of the wheel pair, the driving shafts of the ultrasonic strengthening driving assemblies of the two wheel pairs respectively and synchronously abut against the inner sides of the edges of the end faces of the two wheels of the wheel pair.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a view structural diagram of one of the chuck, the center, and the pair of wheel set ultrasonic strengthening drive assembly clamping wheel pairs of the flat-bed numerical control machine tool according to an embodiment of the present invention;

fig. 2 is another view structural diagram of the chuck, the center and the wheel pair of the flat bed numerically-controlled machine tool of the present invention;

fig. 3 is a schematic cross-sectional view of a chuck, a tip, and a pair of wheel set ultrasonic strengthening drive assembly clamping wheel pairs of the flat-bed numerical control machine tool according to an embodiment of the present invention;

fig. 4 is a schematic view of a single claw, a supporting shaft and a driving shaft of the wheel-set ultrasonic enhanced driving assembly according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view at A-A of FIG. 4;

fig. 6 is a schematic view of another perspective structure of the wheel set ultrasonic enhanced driving assembly according to an embodiment of the present invention, in which a single claw, a supporting shaft and a driving shaft are engaged together.

10. A claw; 11. a step surface; 20. a support shaft; 21. a step surface; 22. a recess; 30. a drive shaft; 31. a flange; 40. a chuck; 50. a wheel set; 51. a wheel; 511. the inner side of the edge; 52. a wheel axle; 60. and (4) a tip.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

Referring to fig. 1 to 3, fig. 1 shows the utility model discloses one of them visual angle structure chart when chuck 40, top 60 of flat lathe bed digit control machine tool and wheel pair supersound reinforce drive assembly centre gripping wheel pair 50 of an embodiment, fig. 2 shows the utility model discloses a flat lathe bed of chuck 40, top 60 and wheel pair supersound reinforce another visual angle structure chart when drive assembly centre gripping wheel pair 50 of flat lathe bed digit control machine tool, fig. 3 shows the utility model discloses a cross-sectional schematic diagram when chuck 40, top 60 of flat lathe bed digit control machine tool and wheel pair supersound reinforce drive assembly centre gripping wheel pair 50 of an embodiment. An embodiment of the utility model provides a drive assembly is reinforceed to wheel pair supersound, drive assembly is reinforceed to wheel pair supersound includes: a plurality of jaws 10, a plurality of support shafts 20, and a plurality of drive shafts 30. The jaws 10 are adapted to be spaced around a chuck 40 of a flat-bed numerically controlled machine tool, and the jaws 10 are further adapted to be movably disposed in a radial direction of the chuck 40. The support shafts 20 are correspondingly connected with the claws 10, the support shafts 20 are also correspondingly connected with the drive shafts 30, and the drive shafts 30 are used for abutting against the inner side 511 of the edge of the end face of the wheel 51.

The wheel set ultrasonic strengthening driving assembly can be assembled on a chuck 40 of an existing flat-bed numerical control machine tool, the claw 10 moves along the radial direction of the chuck 40 to drive the driving shaft 30 to adjust the position, and when the driving shaft 30 moves, the driving shaft can be in contact with the inner side 511 of the end face edge of the wheel 51 of the wheel set 50 to clamp and fix the wheel set 50, and can be separated from the inner side 511 of the end face edge of the wheel 51 of the wheel set 50 to loosen the wheel set 50. When the driving shaft 30 moves to abut against the inner side 511 of the end face edge of the wheel 51 of the wheel pair 50, the driving shaft 30 applies a preset pressure stress to the inner side 511 of the end face edge of the wheel 51 of the wheel pair 50, and meanwhile, two apexes 60 of the flat bed body numerical control machine tool synchronously abut against the end faces of two wheel shafts 52 of the wheel pair 50, so that under the rotation driving action of a main shaft of the flat bed body numerical control machine tool, the driving device and the wheel pair 50 can be driven to rotate together, and the ultrasonic strengthening processing of the wheel pair 50 can be completed. Therefore, the ultrasonic strengthening machining device can realize the ultrasonic strengthening machining of the wheel set 50 on the existing numerical control lathe with the flat lathe bed, and is simple in structure, low in cost and convenient to operate.

Further, the wheel-set ultrasonic strengthening driving assembly also comprises a plurality of adjusting mechanisms (not shown in the figure). A plurality of adjustment mechanisms are in one-to-one correspondence with the plurality of jaws 10, the adjustment mechanisms being configured to drive the jaws 10 to move in a radial direction of the chuck 40.

Further, the adjusting mechanism comprises a screw and a nut sleeved on the screw. The screw is adapted to be rotatably disposed on the chuck 40 and the nut is coupled to the jaws 10. Thus, when the drive screw is rotated, the screw is rotated so that the nut moves along the screw, which in turn moves the jaws 10 in the radial direction of the chuck 40. It should be noted that the adjusting mechanism is not limited to a structure in which the screw and the nut are engaged, and may be, for example, an air cylinder driving mechanism, an oil cylinder driving mechanism, an electric cylinder driving mechanism, a rack and pinion driving mechanism, etc., and is not limited herein as long as the driving jaws 10 can move in the radial direction of the chuck 40.

Further, the chuck 40 is provided with a sliding groove along a radial direction, and the jaws 10 are provided with a sliding block movably disposed in the sliding groove. Thus, in the process that the adjusting mechanism drives the jaws 10 to move in the radial direction of the chuck 40, the sliding blocks move along the sliding grooves, so that the moving effect of the jaws 10 is stable.

Referring to fig. 3, in one embodiment, the surface of the driving shaft 30 for abutting against the inner side 511 of the edge of the end face of the wheel 51 is a conical surface or a circular arc surface. Thus, the abutting effect between the end surface of the driving shaft 30 and the inner side 511 of the end surface edge of the wheel 51 is stable, and the wheel set 50 can be smoothly driven to rotate.

Referring to fig. 4 to 6, fig. 4 illustrates a view structure diagram of a single claw 10, a support shaft 20 and a drive shaft 30 in a wheel-set ultrasonic enhanced drive assembly according to an embodiment of the present invention, fig. 5 illustrates a cross-sectional view of fig. 4 at a-a, and fig. 6 illustrates another view structure diagram of a single claw 10, a support shaft 20 and a drive shaft 30 in a wheel-set ultrasonic enhanced drive assembly according to an embodiment of the present invention. In one embodiment, one end of the support shaft 20 is detachably coupled to the jaw 10. Further, the other end of the support shaft 20 is detachably connected to the drive shaft 30. Therefore, on one hand, the supporting shaft 20 is detachably connected with the clamping jaws 10, so that the clamping jaws 10 can be manufactured independently, the clamping jaws 10 are easy to process and manufacture, the clamping jaws 10 are not required to be manufactured together with the supporting shaft 20, and when the quality of the produced clamping jaws 10 does not meet the standard, the clamping jaws 20 are not required to be replaced synchronously; on the other hand, since the support shaft 20 is detachably coupled to the drive shaft 30, the drive shaft 30 can be manufactured separately from the support shaft 20, and also it is not necessary to manufacture the drive shaft 30 together with the support shaft 20, and when the end surface of the drive shaft 30 is not matched with the edge inside 511 of the end surface of the wheel 51, the drive shaft 30 can be detached for repair, and after the end surface of the drive shaft 30 is adjusted, the drive shaft 30 is attached to the end of the support shaft 20.

Further, one end of the supporting shaft 20 is detachably connected with the clamping jaw 10 through a screw, a bolt, a pin or a clamping piece; the other end of the support shaft 20 is detachably connected to the drive shaft 30 by means of screws, bolts, pins, or snap-fit members.

In addition, in order to facilitate the butt joint of one end of the supporting shaft 20 and the clamping jaw 10, stepped surfaces (11 and 21) are arranged on the end face of one end of the supporting shaft 20 and the end face of the clamping jaw 10, and the stepped surface 21 of the end face of one end of the supporting shaft 20 is matched with the stepped surface 11 of the end face of the clamping jaw 10, so that the end face of one end of the supporting shaft 20 and the end face of the clamping jaw 10 can be rapidly connected in an aligned mode, and the assembling and disassembling are facilitated. In addition, in order to facilitate the butt assembly of the other end of the support shaft 20 and the drive shaft 30, for example, a concave portion 22 is provided on the end surface of the other end of the support shaft 20, a flange 31 corresponding to the concave portion 22 is provided on the drive shaft 30, and the flange 31 is fitted into the concave portion 22, so that the end surface of the other end of the support shaft 20 and the end surface of the drive shaft 30 can be quickly aligned and connected together, and the mounting and dismounting can be facilitated.

Further, the jaw 10, the support shaft 20 and the driving shaft 30 are integrated; alternatively, the claw 10 and the supporting shaft 20 are integrated; alternatively, both the support shaft 20 and the drive shaft 30 are integrally configured.

Referring to fig. 1 to 3 again, in one embodiment, a flat-bed numerically controlled machine tool includes a spindle, two chucks 40 disposed at an interval, and two wheel-set ultrasonic-enhanced driving assemblies according to any of the above embodiments. The spindle is connected to the chuck 40 for driving the chuck 40 to rotate. The two wheel pairs of ultrasonic strengthening driving assemblies are arranged in one-to-one correspondence with the two chucks 40, the jaws 10 are arranged on the corresponding chucks 40 in a winding mode at intervals, and the jaws 10 can be movably arranged along the radial direction of the chucks 40.

According to the flat-bed numerical control machine tool, the wheel set ultrasonic strengthening driving assembly is assembled on the chuck 40 of the existing flat-bed numerical control machine tool, the claw 10 moves along the radial direction of the chuck 40 to drive the driving shaft 30 to adjust the position, and when the driving shaft 30 moves, the driving shaft can be in contact with the inner side 511 of the end face edge of the wheel 51 of the wheel set 50 to clamp and fix the wheel set 50, and can be separated from the inner side 511 of the end face edge of the wheel 51 of the wheel set 50 to loosen the wheel set 50. When the driving shaft 30 moves to abut against the inner side 511 of the end face edge of the wheel 51 of the wheel pair 50, the driving shaft 30 applies a preset pressure stress to the inner side 511 of the end face edge of the wheel 51 of the wheel pair 50, and meanwhile, two apexes 60 of the flat bed body numerical control machine tool synchronously abut against the end faces of two wheel shafts 52 of the wheel pair 50, so that under the rotation driving action of a main shaft of the flat bed body numerical control machine tool, the driving device and the wheel pair 50 can be driven to rotate together, and the ultrasonic strengthening processing of the wheel pair 50 can be completed. Therefore, the ultrasonic strengthening machining device can realize the ultrasonic strengthening machining of the wheel set 50 on the existing numerical control lathe with the flat lathe bed, and is simple in structure, low in cost and convenient to operate.

Referring again to fig. 1-3, in one embodiment, the flat bed numerical control machine further includes two apexes 60 disposed in an opposing spaced apart relationship. The main shaft is connected with the center 60 and is used for driving the center 60 to rotate. When the two centers 60 respectively and synchronously abut against the end faces of the two wheel shafts 52 of the wheel pair 50, the driving shafts 30 of the ultrasonic strengthening driving assemblies of the two wheel pairs respectively and synchronously abut against the inner sides 511 of the end faces of the two wheels 51 of the wheel pair 50. So, can comparatively firmly grasp wheel pair 50, under the rotation drive effect of the main shaft of flat lathe bed digit control machine tool, alright in order to realize driving drive arrangement and wheel pair 50 and rotate together to can accomplish wheel pair 50 supersound intensive processing.

Specifically, two wheel-set ultrasonic strengthening driving assemblies are oppositely arranged, and the jaws 10 of the wheel-set ultrasonic strengthening driving assemblies are wound on the chuck 40 at equal intervals. The number of jaws 10 of the wheel-set ultrasonic enhanced drive assembly is not limited and may be, for example, two, three, four, five, six or other numbers.

The material of the jaws 10, the supporting shaft 20 and the driving shaft 30 may be, but is not limited to, hard alloy, aluminum, steel, iron, copper, stainless steel, etc. The claw 10, the support shaft 20, and the drive shaft 30 may be made of the same material or different materials, and are not limited thereto.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Claims (10)

1. A wheel-set ultrasonic enhanced drive assembly, comprising:

the clamping jaws are used for being wound on a chuck of the flat-bed numerical control machine tool at intervals and are also used for being movably arranged along the radial direction of the chuck;

the wheel pair supporting device comprises a plurality of supporting shafts, a plurality of driving shafts, a plurality of supporting shafts and a plurality of clamping jaws in one-to-one correspondence, a plurality of supporting shafts are further connected with a plurality of driving shafts in one-to-one correspondence, and the driving shafts are used for being abutted to the inner sides of the edges of the end faces of the wheels of the wheel pair.

2. The wheelset ultrasonic enhanced drive assembly of claim 1, further comprising a plurality of adjustment mechanisms; the adjusting mechanisms are in one-to-one correspondence with the jaws and are used for driving the jaws to move in the radial direction of the chuck.

3. The wheel-set ultrasonic enhanced driving assembly according to claim 2, wherein the adjusting mechanism comprises a screw and a nut sleeved on the screw, the screw is configured to be rotatably disposed on the chuck, and the nut is connected to the claw.

4. The wheel-set ultrasonic enhanced drive assembly according to claim 2, wherein the chuck is provided with a sliding groove along a radial direction, and the jaws are provided with a sliding block movably arranged in the sliding groove.

5. The wheel-set ultrasonic enhanced driving assembly according to claim 1, wherein the surface of the driving shaft, which is used for being abutted against the inner side of the edge of the end face of the wheel, is a conical surface or a circular arc surface.

6. The wheel-set ultrasonic enhanced driving assembly according to claim 1, wherein one end of the supporting shaft is detachably connected with the claw; the other end of the supporting shaft is detachably connected with the driving shaft.

7. The wheel-set ultrasonic enhanced driving assembly according to claim 6, wherein one end of the supporting shaft is detachably connected with the clamping jaw through a screw, a bolt, a pin or a clamping piece; the other end of the supporting shaft is detachably connected with the driving shaft through screws, bolts, pins or clamping pieces.

8. The wheel-set ultrasonic enhanced driving assembly according to any one of claims 1 to 7, wherein the claw, the supporting shaft and the driving shaft are integrated; or the clamping jaw and the supporting shaft are of an integrated structure; alternatively, the support shaft and the drive shaft are integrated.

9. A numerically controlled machine tool with a flat bed, comprising a main shaft, two chucks arranged at an interval, and two wheel-set ultrasonic strengthening driving assemblies according to any one of claims 1 to 8; the spindle is connected with the chuck and used for driving the chuck to rotate; two drive assembly and two are reinforceed to wheel pair supersound the chuck one-to-one sets up, the jack catch is around establishing arranging in the correspondence at interval on the chuck, just the jack catch is followed the portable setting of radial direction of chuck.

10. The flat bed numerically controlled machine tool of claim 9, further comprising two apexes oppositely spaced apart; the main shaft is connected with the tip and used for driving the tip to rotate; when the two apexes respectively and synchronously abut against the end faces of the two wheels of the wheel pair, the driving shafts of the ultrasonic strengthening driving assemblies of the two wheel pairs respectively and synchronously abut against the inner sides of the edges of the end faces of the two wheels of the wheel pair.

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