阅读说明：本技术 一种异型轴跟刀架 (Special-shaped shaft follow rest ) 是由 戚建兵 于 2021-07-15 设计创作，主要内容包括：本发明公开了一种异型轴跟刀架,涉及机械加工设备技术领域,包括安装座和弧面支撑架,所述弧面支撑架铰接于所述安装座上,所述弧面支撑架为两个且对称设置,两弧面支撑架相对的端面为弧面,所述弧面支撑架的弧面端设置有若干球体,所述球体可转动的嵌设于所述弧面支撑架内,所述弧面支撑架通过弹簧与限位立柱连接,所述弹簧设置与弧面支撑与限位立柱之间用于使两弧面支撑相互靠近。通过本发明的设置提供了一种能够适用于异型轴加工的跟刀架。(The invention discloses a special-shaped shaft follow rest, which relates to the technical field of machining equipment and comprises a mounting seat and two cambered surface supporting frames, wherein the two cambered surface supporting frames are hinged on the mounting seat and symmetrically arranged, the opposite end surfaces of the two cambered surface supporting frames are cambered surfaces, a plurality of spheres are arranged at the cambered surface ends of the cambered surface supporting frames, the spheres are rotatably embedded in the cambered surface supporting frames, the cambered surface supporting frames are connected with a limiting upright post through springs, and the springs are arranged between the cambered surface supporting frames and the limiting upright post and used for enabling the two cambered surface supporting frames to approach each other. The invention provides the follow rest which can be suitable for machining the special-shaped shaft.)

1. The utility model provides a heterotypic axle follow rest, a serial communication port, including mount pad and cambered surface support frame, the cambered surface support frame articulate in on the mount pad, the cambered surface support frame is two and the symmetry sets up, and the terminal surface that two cambered surface support frames are relative is the cambered surface, the cambered surface end of cambered surface support frame is provided with a plurality of spheroids, the rotatable inlaying of spheroid is located in the cambered surface support frame, the cambered surface support frame passes through the spring and is connected with spacing stand, the spring sets up and is used for making two cambered surfaces support and be close to each other between cambered surface support and the spacing stand.

2. The special-shaped shaft follow rest according to claim 1, wherein a horizontal limiting protrusion is arranged at the upper end of the arc surface supporting frame, the horizontal limiting protrusion is fixedly connected with one end of a spring, the other end of the spring is fixedly connected to a limiting upright post, an inclined support is arranged on one side of the limiting upright post, one end of the inclined support is fixedly connected to the limiting upright post, and the other end of the inclined support is fixedly connected to the mounting seat.

3. The special-shaped shaft follow rest according to claim 1, wherein a plurality of grooves are formed in the arc surface end of the arc surface support frame, the volume of each groove is larger than 1/2 of the ball body, the grooves are equidistantly distributed in the arc surface end of the arc surface support frame, and the ball body is rotatably embedded in the grooves.

4. The special-shaped shaft follow rest according to claim 1, wherein a mounting hole used for being matched with the cutter head is formed in the mounting seat.

5. The special-shaped shaft follow rest as claimed in claim 1, wherein a groove is formed at one end of the mounting seat, at which the cambered surface support frame is mounted, and a support seat is arranged in the groove, and a ball is arranged at one end of the support seat, which is close to the cambered surface support frame, and the ball is rotatably embedded in the support seat.

Technical Field

The invention relates to the technical field of machining equipment, in particular to a special-shaped shaft follow rest.

Background

When the long and thin workpiece is turned on a lathe, the long and thin workpiece clamped at two ends is naturally bent due to the action of gravity if the middle part of the long and thin workpiece is short of support, and the bending is amplified due to centrifugal force in the turning process and is easy to deform and vibrate, so that the size and the precision of the workpiece are difficult to ensure;

when the special-shaped slender shaft type part is machined, because the shaft sleeve of the central support can only move along a specific linear track, when a part with taper or a step circle on a workpiece is encountered, a gap is generated between the traditional follow rest and the workpiece, so that the workpiece is easy to vibrate in the machining process, and the machining precision is influenced.

To this end, a follower rest suitable for machining a special-shaped shaft is provided.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a follower rest which can be suitable for machining a special-shaped shaft.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a heterotypic axle follow rest, includes mount pad and cambered surface support frame, the cambered surface support frame articulate in on the mount pad, the cambered surface support frame is two and symmetry settings, and the relative terminal surface of two cambered surface support frames is the cambered surface, the cambered surface end of cambered surface support frame is provided with a plurality of spheroids, the rotatable inlaying of spheroid is located in the cambered surface support frame, the cambered surface support frame passes through the spring and is connected with spacing stand, the spring sets up and is used for making two cambered surface supports to be close to each other between cambered surface support and the spacing stand.

Further, cambered surface support frame upper end is provided with horizontal spacing arch, horizontal spacing arch and spring one end fixed connection, spring other end fixed connection is in spacing stand, spacing stand one side is provided with the bearing diagonal, bearing diagonal one end fixed connection is in spacing stand, bearing diagonal other end fixed connection in mount pad.

Further, a plurality of recesses have been seted up to the cambered surface end of cambered surface support frame, the recess volume is greater than spheroid volume 1/2, and the equidistant arrangement of recess in the cambered surface end of cambered surface support frame, the rotatable inlay of spheroid is located in the recess.

Furthermore, the mounting seat is provided with a mounting hole matched with the cutter head.

Furthermore, a groove is formed in one end, provided with the cambered surface support frame, of the mounting seat, a support seat is arranged in the groove, a ball is arranged at one end, close to the cambered surface support frame, of the support seat, and the ball is rotatably embedded in the support seat.

Compared with the prior art, the invention has the beneficial effects that:

the follow rest is suitable for processing the special-shaped shaft, the shaft parts are clamped and fixed through the arranged cambered surface support frame and the ball body, and transition is realized through the structure of the ball body when the stepped shaft is processed; the cambered surface support frame is supported through the arranged limiting upright posts and limiting springs so as to ensure that a ball body on the cambered surface support frame can be attached to the surface of a workpiece to be processed; through the inclined strut who sets up to improve the stability of spacing stand earlier.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a schematic structural view of a profile shaft follower rest according to the present invention;

fig. 2 is a schematic structural view of the follower rest with the pull rod according to the present invention.

In the figure:

11. a horizontal projection; 12. a cambered surface support frame; 13. a sphere;

2. a limiting spring;

31. a limiting upright post; 32. obliquely supporting;

41. a mounting seat; 42. mounting holes;

51. a supporting seat;

61. a pull rod; 62. and (4) a pull ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1-2, a special-shaped shaft follower rest comprises a mounting seat 41, an arc surface support frame 12 and a limit upright post 31,

the mounting seat 41 is of a cuboid structure, a mounting hole 42 used for being matched with the cutter head is formed in the mounting seat 41, two cambered surface supporting frames 12 and two limiting upright columns 31 are hinged to the upper end face of the mounting seat 41, and the cambered surface supporting frames 12 and the limiting upright columns 31 are fixedly connected with each other, wherein the cambered surface supporting frames 12 and the limiting upright columns 31 are symmetrically arranged on the center line of the mounting seat 41;

the cambered surface support frame 12 is in a semi-annular structure, the working surface (the end surface close to the shaft part when clamping the shaft part) is a cambered surface, a plurality of hemispherical grooves are arranged at the cambered surface end of the cambered surface support frame 12,

the sphere 13 is arranged in the hemispherical groove, the sphere 13 is rotatably embedded in the cambered surface support frame 12, the center of the sphere 13 is positioned in the same plane, the volume of the hemispherical groove is larger than 1/2 of the volume of the sphere 13, the radius of the opening of the hemispherical groove is smaller than that of the sphere 13, so that the sphere 13 cannot be separated from the hemispherical groove after being embedded in the hemispherical groove, and 4-6 hemispherical grooves which are distributed at equal intervals are arranged on each cambered surface support frame 12;

the upper end of the cambered surface support frame 12 is provided with a horizontal bulge 11, the horizontal bulge 11 and the cambered surface support frame 12 are integrally formed, a limiting spring 2 is arranged between the horizontal bulge 11 and a limiting upright post 31, two ends of the limiting spring 2 are respectively fixedly connected with the horizontal bulge 11 and the limiting upright post 31, the limiting upright post 31 is fixedly connected with the upper end surface of the mounting seat 41, one side of the limiting upright post 31 far away from the cambered surface support frame 12 is provided with an inclined support 32, one end of the inclined support 32 is fixedly connected with the limiting upright post 31, and the other end of the inclined support 32 is fixedly connected with the mounting seat 41, so as to improve the stability of the limiting upright post 31,

a groove is formed in the upper end face of the mounting seat 41, the width of the groove is slightly smaller than the distance between the hinged positions of the two arc-shaped supporting frame pieces, a supporting seat 51 is arranged in the groove, the bottom of the supporting seat 51 is connected with the lower end face of the groove through a spring, a ball 13 is arranged at one end, close to the arc-shaped supporting frame 12, of the supporting seat 51, and the ball 13 is rotatably embedded in the supporting seat 51;

in other embodiments, be provided with the opening that link up on the horizontal protrusion 11, be provided with the coaxial opening with horizontal protrusion 11 on the spacing stand 31, pull rod 61 runs through two openings in proper order, and pull rod 61 closes on horizontal protrusion 11 open-ended one end threaded connection has the nut, closes on spacing stand 31 open-ended one end and is provided with pull ring 62, for preventing that pull rod 61 from producing and rocking, inlays the nut and locates in horizontal protrusion 11.

The invention has the following use process: when the tool is used, the mounting seat is mounted on the cutter head, after the tool is mounted, the pull ring is pulled to open the two cambered surface support frames, a workpiece to be machined is placed in the tool (the workpiece is inserted into a space surrounded by the two cambered surface support frames), and the ball body on the cambered surface support frame is attached to the surface of the workpiece to be machined through the elasticity of the limiting spring.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.