Assistive device for driving rotation of rotating shaft

Abstract

The invention relates to the technical field of machine tool assistive tools, in particular to a rotating shaft rotation driving assistive tool which comprises a driving shaft sleeve, an insertion hole is formed in the middle of the driving shaft sleeve in the axial direction, the driving shaft sleeve is arranged on a rotating shaft in a sleeving mode through the insertion hole, and a shifting block is arranged on the outer side of the driving shaft sleeve. The bolt is matched with the shifting block to push the driving shaft sleeve to rotate, an inner spline is arranged on the inner side wall of the insertion hole and matched with an outer spline on the outer side of the rotating shaft, an axial limiting mechanism is arranged on the driving shaft sleeve, and the axial limiting mechanism drives the shaft sleeve to move in the axial direction for limiting. The shifting bead screw elastic pin is installed on the driving shaft sleeve through the threaded hole and used for axial limiting, it is guaranteed that the driving shaft sleeve does not axially move and interfere with a cutter bar, compared with an existing locking bolt, the process of disassembling and assembling the bolt every time is reduced, the use efficiency is improved, and rapid disassembling and assembling are achieved.

Description

Technical Field

[0001] This invention relates to the field of machine tool fixtures and tooling technology, and in particular to a rotary drive fixture for a rotating shaft. Background Technology

[0002] The hollow suspension shaft used in new energy vehicles is characterized by its small diameter and compact structure. During the post-heat turning of the outer diameter and end face, the shaft is clamped and driven to rotate using a double-top drive system on a lathe. When clamped by the center, a loose clamping can easily cause slippage during rotation, while a tight clamping can result in high pressure on the tailstock, potentially leading to bending and deformation of the hollow shaft, resulting in runout of the outer diameter that does not meet quality requirements.

[0003] Existing shafts use chucks for auxiliary rotation during lathe machining. Traditional bolt-type chucks require rotating the bolts to lock them in place each time they are used. This process is time-consuming and laborious, and may also cause scratches on the outer surface. Spring-loaded chucks also pose a risk of scratching and are prone to slippage and scrapping if installed incorrectly, affecting product quality. Summary of the Invention

[0004] In view of this, the purpose of this invention is to provide a rotating shaft drive auxiliary tool to solve the problems of time-consuming operation and easy scratching of existing chicken core clamps when holding workpieces.

[0005] To achieve the above objectives, the present invention provides a rotating shaft drive auxiliary tool, including a drive bushing with an axial insertion hole in the middle. The drive bushing is fitted onto the rotating shaft through the insertion hole. A lever block is provided on the outer side of the drive bushing. Bolts are installed on the lathe chuck. The drive bushing is rotated by the bolts in conjunction with the lever block. An internal spline is provided on the inner sidewall of the insertion hole, which is adapted to the external spline on the outer side of the rotating shaft. An axial limiting mechanism is provided on the drive bushing to limit the axial movement of the drive bushing.

[0006] A further improvement is that the axial limiting mechanism includes a ball screw elastic pin, and multiple threaded holes are equidistantly arranged around the side of the drive shaft sleeve. The ball screw elastic pin is threadedly installed in the threaded hole, and the end of the ball screw elastic pin extends into the drive shaft sleeve through the threaded hole.

[0007] A further improvement is that the end of the drive shaft sleeve away from the toggle block adopts a beveled structure.

[0008] A further improvement is that the toggle block has a groove on its side, a buffer pad is provided in the groove, and the buffer pad has buffer protrusions at both ends.

[0009] The beneficial effects of the present application are: by setting the driving shaft sleeve on the driving block, the driving block is in contact with the bolt on the lathe chuck, and as the chuck drives the bolt to rotate, the driving block is pushed to drive the driving shaft sleeve to rotate, the driving shaft sleeve is provided with an inner spline in the insertion hole, and the inner spline is matched with the outer spline on the outer side of the rotating shaft, the spline is used as a driving point to drive the rotating shaft to rotate together, and the end of the driving shaft sleeve is a beveled structure to avoid interference with the tool and facilitate stable processing; by setting the axial limiting mechanism, the ball screw elastic pin is installed on the driving shaft sleeve through the threaded hole for axial limiting, ensuring that the driving shaft sleeve does not move axially and interfere with the tool bar, and compared with the existing locking bolt, the process of disassembling the bolt each time is reduced, the use efficiency is improved, and quick disassembly and assembly are realized. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only a part of the present application, and other drawings can also be obtained by those skilled in the art without creative effort based on these drawings.

[0011] Figure 1 The figure is a three-dimensional structure schematic diagram of the embodiment of the present application. Figure 2 The figure is a front view structure schematic diagram of the embodiment of the present application. Figure 3 The figure is a recess structure schematic diagram of the embodiment of the present application.

[0012] The figure is marked as: 1, driving shaft sleeve; 2, insertion hole; 3, driving block; 4, inner spline; 5, ball screw elastic pin; 6, threaded hole; 7, recess; 8, buffer pad. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the present application more clear, the following will further describe the present application in combination with specific embodiments.

[0014] It should be noted that unless otherwise defined, technical terms or scientific terms used in the present application shall have the common meaning to those skilled in the art of the present application. The terms "first", "second" and similar terms used in the present application do not indicate any order, number or importance, but are only used to distinguish different components. The terms "include" or "contain" and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, and do not exclude other elements or objects. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationship, which may change accordingly when the absolute position of the described object changes.

[0015] As shown in Figure 1 , Figure 2 , the present embodiment provides a rotary driving aid for rotating shaft, which comprises a driving sleeve 1, an insertion hole 2 is formed in the middle of the driving sleeve 1 along the axial direction, the driving sleeve 1 is sleeved on the rotating shaft through the insertion hole 2, a push block 3 is arranged on the outside of the driving sleeve 1, and the driving sleeve 1 and the push block 3 can be connected by integral molding, bolt fixing connection and welding. A bolt is installed on the lathe chuck, the bolt rotates with the lathe chuck, the bolt contacts the push block 3 to push the driving sleeve 1 to rotate.

[0016] As shown in Figure 3 , a groove 7 is formed in the side edge of the push block 3, a buffer pad 8 is arranged in the groove 7, the buffer pad 8 has buffer protrusions at both ends, when the bolt contacts the push block 3, the bolt is clamped in the groove 7, the bolt cover at the end of the bolt is clamped on one side of the groove 7, so as to limit the axial direction of the driving sleeve 1 through the push block 3, preventing the driving sleeve 1 from moving to the machining end of the rotating shaft during use; the contact between the bolt and the push block 3 is buffered by the buffer pad 8, reducing the collision loss between the components, and the buffer effect is further improved by the buffer protrusions at both ends, which can also reduce the generation of shaking.

[0017] The inner side wall of the insertion hole 2 has an inner spline 4, the inner spline 4 is integrally formed with the driving sleeve 1, the inner spline 4 is matched with the outer spline on the outside of the rotating shaft, the inner spline 4 and the outer spline are clamped with each other, and in the rotating process of the driving sleeve 1, the spline is used as a driving point to drive the rotating shaft to rotate synchronously.

[0018] The axial limiting mechanism is arranged on the driving shaft sleeve 1, and axial movement of the driving shaft sleeve 1 is limited through the axial limiting mechanism. The axial limiting mechanism comprises a knob screw elastic pin 5, a plurality of threaded holes 6 are equidistantly arranged around the side edge of the driving shaft sleeve 1, the knob screw elastic pin 5 is threadedly installed in the threaded hole 6, the end of the knob screw elastic pin 5 extends into the driving shaft sleeve 1 through the threaded hole 6, the stability of the driving shaft sleeve 1 being sleeved on the rotating shaft is ensured through the action of the knob screw elastic pin 5, the driving shaft sleeve 1 cannot move axially on the rotating shaft, and the problem of interference with the cutter due to axial movement is avoided; and the knob screw elastic pin 5 is used for positioning, the process of locking the bolt is reduced each time, use is more convenient and fast, and the convenience of use is improved.

[0019] The end of the driving shaft sleeve 1 away from the driving block 3 adopts a beveled structure, and the inclined end surface of the driving shaft sleeve 1 can be kept away from the cutter, thereby avoiding the interference problem with the cutter.

[0020] In use, the inner spline 4 inserted into the hole 2 is clamped with the outer spline at the end of the rotating shaft, the axial position of the driving shaft sleeve 1 at the end of the rotating shaft is limited through the knob screw elastic pin 5, and the stability of the driving shaft sleeve 1 being installed on the rotating shaft is ensured; the rotating shaft is placed on the lathe, the tailstock of the lathe headstock is started to clamp the two ends of the rotating shaft, the chuck of the lathe headstock is started to rotate slowly, the bolt is in stable contact with the driving block 3, after the bolt is in stable contact with the driving block 3, the lathe equipment is driven, so that the rotating shaft is driven to rotate, and the cutter is used to perform hot post-hardening turning on the rotating shaft.

[0021] Those skilled in the art should understand that the discussion of the above any embodiment is only exemplary, and is not intended to indicate that the scope of the present application is limited to these examples; under the idea of the present application, the above embodiments or technical features in different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above. In order to be brief, they are not provided in details. Any omission, modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A rotating shaft drive auxiliary device, comprising a drive shaft sleeve (1), characterized in that, The drive bushing (1) has an insertion hole (2) in the middle along the axial direction. The drive bushing (1) is fitted onto the rotating shaft through the insertion hole (2). A toggle block (3) is provided on the outside of the drive bushing (1). A bolt is installed on the lathe chuck. The drive bushing (1) is pushed to rotate by the bolt in conjunction with the toggle block (3). An internal spline (4) is provided on the inner wall of the insertion hole (2). The internal spline (4) is adapted to the external spline on the outside of the rotating shaft. An axial limiting mechanism is provided on the drive bushing (1). The axial movement of the drive bushing (1) is limited by the axial limiting mechanism.

2. The rotary drive auxiliary device for a rotating shaft according to claim 1, characterized in that, The axial limiting mechanism includes a ball screw elastic pin (5), and multiple threaded holes (6) are equidistantly arranged around the side of the drive bushing (1). The ball screw elastic pin (5) is threadedly installed in the threaded hole (6), and the end of the ball screw elastic pin (5) passes through the threaded hole (6) and extends into the drive bushing (1).

3. The rotary drive auxiliary device for a rotating shaft according to claim 1, characterized in that, The end of the drive shaft sleeve (1) away from the actuating block (3) has a beveled structure.

4. The rotary drive auxiliary device for a rotating shaft according to claim 1, characterized in that, The actuating block (3) has a groove (7) on its side, and a buffer pad (8) is provided in the groove (7). The buffer pad (8) has buffer protrusions at both ends.

Images