CN215615136U

CN215615136U - Follow rest

Info

Publication number: CN215615136U
Application number: CN202121736312.0U
Authority: CN
Inventors: 李新求
Original assignee: Goal Searchers Co ltd Zhuhai
Current assignee: Goal Searchers Co ltd Zhuhai
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-01-25
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a follower rest, comprising: a fixed seat; the first supporting claw and the third supporting claw are rotatably connected with the fixed seat, and the rotating planes of the first supporting claw and the third supporting claw are vertical to the axial direction of the shaft to be processed; the second supporting claw is connected with the fixed seat in a sliding manner, and the sliding direction of the second supporting claw is perpendicular to the axial direction of the shaft to be processed; the driving unit is used for driving the second supporting claw to slide; and the three supporting pieces are respectively and rotatably arranged at one ends of the first supporting claw, the second supporting claw and the third supporting claw, which are close to the shaft to be processed. The second support claw drives the first support claw and the third support claw to rotate reversely in the sliding process, so that the support piece on the first support claw, the support piece on the second support claw and the support piece on the third support claw are synchronously close to or far away from the shaft to be processed, the shaft to be processed is rapidly clamped/loosened, the processing efficiency is very high, the support force is very uniform, and the surface of the shaft to be processed is not easy to damage.

Description

Follow rest

Technical Field

The utility model relates to the technical field of long shaft turning, in particular to a follower rest.

Background

In a lathe apparatus for turning a long shaft, in order to stably support an outer circumference of a shaft to be machined and reduce chattering and runout, an auxiliary device is generally required to radially support the rotating shaft to be machined, and one of the auxiliary devices is a follower rest. During machining, the follow rest and the turning tool move together along the axial direction of the shaft to be machined. The follow rest is provided with three bearings which can move along three different directions to clamp or loosen a shaft to be machined, and at present, a screw rod is usually screwed/unscrewed in sequence in a manual mode to adjust the clamping/loosening of the three bearings so as to clamp/loosen the shaft to be machined, so that the efficiency is low, the machining speed is influenced, the compression force and the distance of the bearings are difficult to ensure to be consistent, the supporting force is uneven, and the surface of the shaft to be machined is easily scratched in the machining process.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the utility model provides the follow rest which is fast and efficient and is not easy to damage a shaft to be machined.

A follower rest according to an embodiment of the present invention includes: a fixed seat; the first supporting claw and the third supporting claw are rotatably connected with the fixed seat, and the rotating planes of the first supporting claw and the third supporting claw are vertical to the axial direction of the shaft to be processed; the second supporting claw is connected with the fixed seat in a sliding mode, and the sliding direction of the second supporting claw is perpendicular to the axial direction of the shaft to be machined; the driving unit is arranged on the fixed seat and used for driving the second supporting claw to slide; the three supporting pieces are respectively and rotatably arranged at one end, close to the shaft to be machined, of the first supporting claw, the second supporting claw and the third supporting claw, the rotating central shaft of each supporting piece is parallel to the axial direction of the shaft to be machined, and the second supporting claw drives the first supporting claw and the third supporting claw to reversely rotate in the sliding process, so that the supporting pieces on the first supporting claw, the supporting pieces on the second supporting claw and the supporting pieces on the third supporting claw are synchronously close to or far away from the shaft to be machined.

The method has the following beneficial effects: this follow-rest passes through the drive unit drive second and supports the claw and slide, the second supports the claw and drives first support claw and third support claw antiport simultaneously at the slip in-process, so that support piece on the first support claw, support piece on the second support claw and the support piece on the third support claw are close to in step or keep away from and treat the processing axle, and then realize quick centre gripping/unclamp and treat the processing axle, machining efficiency is very high, because three support piece is the synchronous linkage, can guarantee to compress tightly dynamics and distance unanimous, the holding power is very even, the difficult surface that treats the processing axle that harms.

According to some embodiments of the present invention, the second support claw drives the first support claw and the third support claw to rotate through a first connecting rod and a second connecting rod, respectively, one end of the first connecting rod is hinged to the fixed seat, the other end of the first connecting rod is slidably hinged to an end of the first support claw far away from the support member, one end of the second connecting rod is hinged to the fixed seat, the other end of the second connecting rod is slidably hinged to an end of the third support claw far away from the support member, and the second support claw drives the first connecting rod and the second connecting rod to rotate reversely during the sliding process.

According to some embodiments of the present invention, the first connecting rod and the second connecting rod are respectively provided with a first guide groove and a second guide groove, the second supporting jaw is provided with a first guide pin and a second guide pin, which are respectively extended into the first guide groove and the second guide groove, the first guide pin slides in the first guide groove and simultaneously drives the first connecting rod to rotate, and the second guide pin slides in the second guide groove and simultaneously drives the second connecting rod to rotate.

According to some embodiments of the utility model, the drive unit is a servo cylinder.

According to some embodiments of the utility model, the support is a bearing.

According to some embodiments of the utility model, when the three supporting pieces clamp the shaft to be processed, the circle center of the shaft to be processed is located in a triangle formed by connecting circle centers of the three supporting pieces.

According to some embodiments of the utility model, the triangle is an isosceles triangle.

According to some embodiments of the utility model, when three of the support members clamp the shaft to be processed, a clamping angle between any adjacent two of the support members is greater than 90 °.

According to some embodiments of the utility model, the triangle is an equilateral triangle.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of an embodiment of the present invention when releasing a shaft to be machined;

fig. 3 is a schematic structural diagram of the embodiment of the present invention when clamping a shaft to be processed.

Reference numerals: the machining device comprises a fixed seat 1, a first supporting claw 2, a second supporting claw 3, a first guide pin 31, a second guide pin 32, a third supporting claw 4, a shaft to be machined 5, a driving unit 6, a supporting piece 7, a first connecting rod 8, a first guide groove 81, a second connecting rod 9 and a second guide groove 91.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and more than, less than, more than, etc. are understood as excluding the present number, and more than, less than, etc. are understood as including the present number. If any description to first, second and third is only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise expressly limited, the terms set, distributed, clamped, unclamped, mounted, connected, etc. are to be construed broadly, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in consideration of the detailed contents of the technical solutions.

Referring to fig. 1, the present invention discloses a follower rest including a fixing base 1, a first supporting jaw 2, a second supporting jaw 3, a third supporting jaw 4, a driving unit 6, and three supporting members 7.

The first supporting claw 2 and the third supporting claw 4 are rotatably connected with the fixed seat 1, the rotating planes of the first supporting claw 2 and the third supporting claw 4 are perpendicular to the axial direction of the shaft 5 to be machined, the second supporting claw 3 is slidably connected with the fixed seat 1, the sliding direction of the second supporting claw 3 is perpendicular to the axial direction of the shaft 5 to be machined, and the driving unit 6 is installed on the fixed seat 1 and used for driving the second supporting claw 3 to slide.

The three supporting pieces 7 are respectively and rotatably arranged at one end of the first supporting claw 2, the second supporting claw 3 and the third supporting claw 4 close to the shaft 5 to be processed, the rotating central shaft of each supporting piece 7 is parallel to the axial direction of the shaft 5 to be processed, and each supporting piece 7 is used for supporting the rotating shaft 5 to be processed and can rotate along with the shaft 5 to be processed.

In addition, the second support claw 3 drives the first support claw 2 and the third support claw 4 to rotate reversely in the sliding process, so that the support piece 7 on the first support claw 2, the support piece 7 on the second support claw 3 and the support piece 7 on the third support claw 4 are close to or far away from the shaft 5 to be processed synchronously, and then the shaft 5 to be processed is clamped/loosened quickly, the processing efficiency is very high, because the three support pieces 7 are in synchronous linkage, the pressing force and the distance can be guaranteed to be consistent, the support force is very uniform, and the surface of the shaft 5 to be processed is not easy to damage.

With further reference to fig. 2 and 3, in some embodiments of the present invention, the second supporting jaw 3 drives the first supporting jaw 2 and the third supporting jaw 4 to rotate through a first connecting rod 8 and a second connecting rod 9, respectively, one end of the first connecting rod 8 is hinged to the fixed seat 1, the other end of the first connecting rod 8 is slidably hinged to one end of the first supporting jaw 2 away from the supporting member 7, one end of the second connecting rod 9 is hinged to the fixed seat 1, the other end of the second connecting rod 9 is slidably hinged to one end of the third supporting jaw 4 away from the supporting member 7, and the second supporting jaw 3 drives the first connecting rod 8 and the second connecting rod 9 to rotate reversely during the sliding process.

Specifically, first guide way 81 and second guide way 91 have been seted up respectively to first connecting rod 8 and second connecting rod 9, install on the second support claw 3 and be used for stretching into first guide way 81 and second guide way 91's first uide pin 31 and second uide pin 32 respectively, first uide pin 31 also drives first connecting rod 8 and rotates in first guide way 81 gliding, second uide pin 32 also drives second connecting rod 9 and rotates in second guide way 91 gliding.

Referring to fig. 2, when the follower rest is in a state of releasing the shaft to be machined 5, when the driving unit 6 drives the second supporting jaw 3 and the supporting member 7, the first guide pin 31 and the second guide pin 32 thereon to move leftward, the first guide pin 31 and the second guide pin 32 move in the first guide groove 81 and the second guide groove 91, respectively, and since the first guide groove 81 and the second guide groove 91 do not extend in the left-right direction and the right end is constrained by the hinge of the fixing base 1, the first link 8 rotates in the counterclockwise direction, thereby driving the first supporting jaw 2 to rotate in the clockwise direction; the second connecting rod 9 rotates clockwise to drive the third supporting claw 4 to rotate counterclockwise until the follow rest in fig. 3 is in a state of clamping the shaft 5 to be machined.

In some embodiments of the present invention, the driving unit 6 is a servo cylinder, and compared with the conventional hydraulic power, the pneumatic power is moderate, the shaft 5 to be processed is not easily clamped, and the servo cylinder can also automatically control the three supporting members 7 to synchronously clamp or release the shaft 5 to be processed.

In some embodiments of the present invention, the supporting member 7 is a bearing, and since the shaft 5 to be processed is always in a rotating state, the supporting member 7 can rotate along with the shaft 5 to be processed, and the linear velocity is kept consistent, so as to achieve the effect of radially rotating and supporting the shaft 5 to be processed by the supporting member 7, and also reduce the wear between the supporting member 7 and the shaft 5 to be processed, and if necessary, lubricating oil can be added to the supporting member 7, so as to further reduce the damage and prolong the service life of the supporting member 7.

Referring to fig. 3, in some embodiments of the present invention, the supporting member 7 on the first supporting jaw 2, the supporting member 7 on the second supporting jaw 3, and the supporting member 7 on the third supporting jaw 4 are sequentially distributed from bottom to top, the second supporting jaw 3 slides in the left-right direction, and when the three supporting members 7 clamp the shaft 5 to be processed, the circle center of the shaft 5 to be processed is located in a triangle defined by a connecting line of the circle centers of the three supporting members 7, so that the shaft 5 to be processed can receive supporting force components of the supporting members 7 in both the up-down direction and the left-right direction. Considering that the first supporting jaw 2 and the third supporting jaw 4 rotate in opposite directions, the triangle may be an isosceles triangle, wherein a line between the center of the supporting member 7 on the first supporting jaw 2 and the center of the supporting member 7 on the third supporting jaw 4 is the bottom side of the isosceles triangle.

Further, in some embodiments of the present invention, with continued reference to fig. 3, when three supports 7 clamp the shaft 5 to be machined, the clamping angle between any two adjacent supports 7 is greater than 90 °, so that the force component of the constrained support applied to the shaft 5 to be machined in the up-down direction is greater, and the shaft 5 to be machined is effectively prevented from jumping up and down. In order to achieve a perfect bearing state, the triangle can be arranged into an equilateral triangle, and the clamping angle between any two adjacent supporting pieces 7 is 120 degrees, so that the stress of the shaft 5 to be processed is very uniform, and the surface of the shaft to be processed is effectively prevented from being pulled during the processing.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. Follow rest, its characterized in that includes:

a fixed seat;

the first supporting claw and the third supporting claw are rotatably connected with the fixed seat, and the rotating planes of the first supporting claw and the third supporting claw are vertical to the axial direction of the shaft to be processed;

the second supporting claw is connected with the fixed seat in a sliding mode, and the sliding direction of the second supporting claw is perpendicular to the axial direction of the shaft to be machined;

the driving unit is arranged on the fixed seat and used for driving the second supporting claw to slide;

the three supporting pieces are respectively and rotatably arranged at one end, close to the shaft to be machined, of the first supporting claw, the second supporting claw and the third supporting claw, the rotating central shaft of each supporting piece is parallel to the axial direction of the shaft to be machined, and the second supporting claw drives the first supporting claw and the third supporting claw to reversely rotate in the sliding process, so that the supporting pieces on the first supporting claw, the supporting pieces on the second supporting claw and the supporting pieces on the third supporting claw are synchronously close to or far away from the shaft to be machined.

2. The follow rest according to claim 1, wherein the second support claw drives the first support claw and the third support claw to rotate through a first connecting rod and a second connecting rod, respectively, one end of the first connecting rod is hinged to the fixed seat, the other end of the first connecting rod is slidably hinged to one end of the first support claw, which is far away from the support member, one end of the second connecting rod is hinged to the fixed seat, the other end of the second connecting rod is slidably hinged to one end of the third support claw, which is far away from the support member, and the second support claw drives the first connecting rod and the second connecting rod to rotate reversely during sliding.

3. The follower rest as claimed in claim 2, wherein the first link and the second link are respectively provided with a first guide groove and a second guide groove, the second support claw is provided with a first guide pin and a second guide pin for respectively extending into the first guide groove and the second guide groove, the first guide pin slides in the first guide groove and simultaneously drives the first link to rotate, and the second guide pin slides in the second guide groove and simultaneously drives the second link to rotate.

4. The steady rest of claim 1, wherein the drive unit is a servo cylinder.

5. The steady rest of any of claims 1 to 4, wherein the support member is a bearing.

6. The steady rest as claimed in claim 5, wherein when the three supporting members clamp the shaft to be machined, the center of the shaft to be machined is located in a triangle formed by connecting the centers of the three supporting members.

7. The follower rest of claim 6, wherein the triangle is an isosceles triangle.

8. The follower holder of claim 7, wherein when three of the support members clamp the shaft to be machined, a clamping angle between any two adjacent support members is greater than 90 °.

9. The blade follower of claim 8 wherein said triangle is an equilateral triangle.