CN209902681U

CN209902681U - Adjustable flexible follow rest

Info

Publication number: CN209902681U
Application number: CN201920581293.5U
Authority: CN
Inventors: 周志芬
Original assignee: Zhongshan Yuanyi Cnc Machinery Co Ltd
Current assignee: Zhongshan Yuanyi Cnc Machinery Co Ltd
Priority date: 2019-04-25
Filing date: 2019-04-25
Publication date: 2020-01-07
Anticipated expiration: 2029-04-25

Abstract

The utility model relates to a flexible follow rest with adjustable, including mount pad, holder, adjustable flexible top pushing structure, dynamic butt structure, the holder sets up on the mount pad, adjustable flexible top pushing structure fix on the holder and with dynamic butt structural contact, be used for conducting flexible effort to dynamic butt structure, can freely adjust the size of jacking force according to the attribute requirement of processing work piece through adjustable flexible top pushing structure, flexible output jacking force to dynamic butt structure when adding man-hour, make high-speed pivoted work piece keep constantly offsetting the radial force that the cutter acted on the work piece, maintain the dynamic balance of work piece, guarantee that the work piece can not receive the product that the atress is too big or unbalanced causes and scrap or produce and shake the sword line, effectively improve processingquality and yield, reduce the processing cost.

Description

Adjustable flexible follow rest

Technical Field

The utility model relates to a digit control machine tool equipment especially relates to a flexible follow rest with adjustable.

Background

At present, when a thin-wall pipe part is turned on a numerical control machine tool, a follow rest is generally required to improve radial supporting force on a shaft of a cutting part, so that the phenomenon that vibration is generated after the part is subjected to tool-cutting stress during turning, tool vibration is generated to influence the smoothness and the part is subjected to bending deformation is avoided. But traditional follow rest occupies a large amount of spaces and is difficult for installing because of the volume is great, and it adopts the rigidity to support, will make thin wall pipe class part deformation fracture when pressure is too big, leads to the product to scrap, is unfavorable for energy-conserving cost reduction, reduces the yield, and processingquality can not obtain the guarantee moreover.

Disclosure of Invention

An object of the utility model is to provide a flexible follow rest with adjustable, the reliable operation can effectively improve processingquality and yield, reduces the processing cost.

The utility model adopts the technical proposal that: the utility model provides a flexible follow rest with adjustable, includes mount pad, holder, adjustable flexible top pushes away structure, dynamic butt structure, the holder sets up on the mount pad, adjustable flexible top pushes away the structure and fixes on the holder and contact with dynamic butt structure for conduct flexible effort to dynamic butt structure.

The adjustable flexible pushing structure comprises a sleeve, an adjusting screw, a spring and an ejector rod, wherein the adjusting screw, the spring and the ejector rod are sequentially arranged in the sleeve, the adjusting screw is in threaded connection with the sleeve, and the spring is abutted between the adjusting screw and the ejector rod.

The dynamic abutting structure comprises an installation frame, two bearing seats and bearings thereof, one end of the installation frame is in threaded connection with the ejector rod, the other end of the installation frame is in a Y-shaped branch, the end part of the Y-shaped branch is provided with the bearing seat, and the bearings are installed on the bearing seats.

The inner side surface of the sleeve and close to the ejector rod is filled with parallel first planes which are symmetrical along the sleeve axis, and the outer side surface of the sleeve corresponding to the ejector rod is cut with parallel second planes which are symmetrical along the ejector rod axis.

The side face of the end part of the ejector rod, which is positioned in the sleeve, is provided with a convex ring, and the inner wall of one end part of the ejector rod, which corresponds to the sleeve, is provided with a flange.

The adjusting screw rod and the ejector rod are respectively provided with a first boss and a second boss at the end parts contacting with the spring, and the two ends of the spring are respectively sleeved on the first boss and the second boss.

And a first limiting bolt leading into the sleeve is arranged on the side surface of the sleeve close to one end of the adjusting screw rod.

The clamp holder is provided with a hoop opening, the hoop opening is sleeved on the sleeve, a second limiting bolt leading to the hoop opening is arranged on the side face of the clamp holder, the sleeve is cylindrical, the outer side face of the sleeve is cut with parallel planes symmetrical along the sleeve axis, and the inner side face of the hoop opening is filled with the parallel planes symmetrical along the hoop opening axis.

Compared with the prior art, the utility model has the following advantage: the utility model discloses a flexible follow rest with adjustable, through the size that the adjustable flexible top pushes away the structure can freely adjust the jacking force according to the attribute requirement of processing work piece, when adding man-hour flexible output jacking force to dynamic butt structure, make high-speed pivoted work piece keep offsetting the radial force that the cutter acted on the work piece constantly, maintain the dynamic balance of work piece, guarantee that the work piece can not receive the too big or uneven product that causes of atress scrap or produce and shake the knife line, effectively improve processingquality and yield, reduce the processing cost.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic cross-sectional view of the present invention.

Fig. 3 is an exploded view of the present invention.

The numbers in the drawing are shown as 1-mounting seat, 2-clamping seat, 21-fourth plane, 3-adjustable flexible pushing structure, 31-sleeve, 311-first plane, 312-flange, 313-third plane, 32-adjusting screw, 321-first boss, 33-spring, 34-ejector rod, 341-second plane, 342-convex ring, 343-second boss, 4-dynamic abutting structure, 41-mounting frame, 42-bearing seat, 43-bearing, 5-first limit bolt and 6-second limit bolt.

The specific implementation mode is as follows:

in order to enhance the understanding of the present invention, the following detailed description will be made in conjunction with the embodiments and the accompanying drawings. The utility model discloses the accessible is implemented as follows:

referring to fig. 1 to 3, an adjustable flexible follower holder is shown, and includes a mounting seat 1, a clamping seat 2, an adjustable flexible pushing structure 3, and a dynamic abutting structure 4, wherein the clamping seat 2 is disposed on the mounting seat 1, the adjustable flexible pushing structure 3 is fixed on the clamping seat 2 and contacts with the dynamic abutting structure 4 for transmitting a flexible acting force to the dynamic abutting structure 4, wherein the adjustable flexible pushing structure 3 can freely adjust the pushing force pushing the dynamic abutting structure 4, and simultaneously flexibly buffers the recoil force transmitted back by the dynamic abutting structure 4, so as to maintain the dynamic balance of the dynamic abutting structure 4 abutting against a workpiece, thereby ensuring the processing quality of the workpiece.

It is specific, adjustable flexible top pushes up structure 3 and includes sleeve pipe 31, adjusting screw 32, spring 33, ejector pin 34, set gradually adjusting screw 32, spring 33, ejector pin 34 in the sleeve pipe 31, adjusting screw 32 and sleeve pipe 31 threaded connection, spring 33 butt is between adjusting screw 32 and ejector pin 34, and the degree of precession and screw-out through adjusting screw 32 changes spring 33 deformation volume to change the size of exporting 34 thrust of ejector pin, realize adjustable function, ejector pin 34 after adjusting exports certain thrust value under spring 33's effect, and undulant at this thrust value certain limit, with the too big impact of buffering thrust, the stable processing of feeding of protection work piece.

Specifically, developments butt structure 4 includes mounting bracket 41, two bearing frames 42 and bearing 43, 41 one end of mounting bracket and 34 threaded connection of ejector pin, the other end are "Y" shape branch, "Y" shape branched tip sets up bearing frame 42, bearing 43 installs on bearing frame 42 to bearing 43 on "Y" shape branch is regarded as butt end butt on the work piece, and the processing demand of different pipe diameters in the certain limit is responded to, and overall structure is simple small and exquisite, and the function is outstanding.

The inner side surface of the sleeve 31 and the inner side surface close to the ejector rod 34 are filled with a first plane 311 which is parallel and axially symmetric along the sleeve 31, the outer side surface of the sleeve 34 is cylindrical, a second plane 341 which is parallel and axially symmetric along the ejector rod 34 is cut on the outer side surface of the sleeve 31, so that the ejector rod 34 is limited to rotate in the sleeve 31, the mounting frame 41 connected with the ejector rod 34 is guaranteed not to rotate, a Y-shaped branch which is a plane on the mounting frame 41 is enabled to be always abutted to a workpiece in the plane, and the processing quality is guaranteed.

The side surface of the end part of the ejector rod 34 located in the sleeve 31 is provided with a convex ring 342, and the inner wall of the end part corresponding to the sleeve 31 is provided with a flange 312, so that the ejector rod 34 is limited to move in the sleeve 31 and is not pushed out of the sleeve 31 completely.

The end parts of the adjusting screw rod 32 and the ejector rod 34, which are in contact with the spring 33, are respectively provided with a first boss 321 and a second boss 343, and two ends of the spring 33 are respectively sleeved on the first boss 321 and the second boss 343, so that the spring 33 cannot move freely in the sleeve 31 to avoid damage.

The side surface of the sleeve 31 close to one end of the adjusting screw rod 32 is provided with a first limiting bolt 5 leading into the sleeve 31, and when the adjusting screw rod 32 is adjusted to an ideal state, the first limiting bolt 5 can be screwed down, so that the adjusting screw rod 32 is prevented from loosening in work, the top thrust provided by the follow rest is insufficient, the precision of the vehicle pin is influenced, and vibration lines are generated.

The clamping seat 2 is provided with a hoop opening, the hoop opening is sleeved on the sleeve 31, the side face of the clamping seat 2 is provided with a second limiting bolt 6 leading to the hoop opening, the sleeve 31 is cylindrical, the outer side face of the sleeve 31 is cut with a parallel third plane 313 axially symmetrical to the sleeve 31, the inner side face of the hoop opening is filled with a parallel fourth plane 21 axially symmetrical to the hoop opening, the rotation and the front and back drawing of the sleeve 31 are limited, the overall stability of the whole follow rest is guaranteed, and the machining precision is improved.

In operation, the pressure released by the spring 33 ultimately acts on the two bearings 43 to provide flexible support for the workpiece. The bearing 43 moves axially along the workpiece along with the tool during operation of the lathe pin and provides a force to the workpiece to be machined that opposes the cutting of the tool, thereby reducing vibration and improving machining accuracy and finish. Since the pressure is a reaction force released after the spring 33 is compressed, the magnitude of the force can be adjusted by adjusting the amount of contraction deformation of the spring 33 by adjusting the screw 32. Can effectively prevent the parts from being damaged due to overlarge pressure, and has small integral volume and convenient installation.

Finally, it should be noted that: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An adjustable flexible follow rest, which is characterized in that: the adjustable flexible pushing structure is fixed on the clamping seat and is in contact with the dynamic abutting structure, and the adjustable flexible pushing structure is used for transmitting flexible acting force to the dynamic abutting structure.

2. An adjustable flexible follower rest as defined in claim 1 wherein: the adjustable flexible pushing structure comprises a sleeve, an adjusting screw, a spring and an ejector rod, wherein the adjusting screw, the spring and the ejector rod are sequentially arranged in the sleeve, the adjusting screw is in threaded connection with the sleeve, and the spring is abutted between the adjusting screw and the ejector rod.

3. An adjustable flexible follower rest as defined in claim 2 wherein: the dynamic abutting structure comprises an installation frame, two bearing seats and bearings thereof, one end of the installation frame is in threaded connection with the ejector rod, the other end of the installation frame is in a Y-shaped branch, the end part of the Y-shaped branch is provided with the bearing seat, and the bearings are installed on the bearing seats.

4. An adjustable flexible follower rest as defined in claim 3 wherein: the inner side surface of the sleeve and close to the ejector rod is filled with parallel first planes which are symmetrical along the sleeve axis, and the outer side surface of the sleeve corresponding to the ejector rod is cut with parallel second planes which are symmetrical along the ejector rod axis.

5. An adjustable flexible follower rest as defined in claim 2 wherein: the side face of the end part of the ejector rod, which is positioned in the sleeve, is provided with a convex ring, and the inner wall of the end part corresponding to the sleeve is provided with a flange.

6. An adjustable flexible follower rest as defined in claim 2 wherein: the adjusting screw rod and the end part of the ejector rod, which is contacted with the spring, are respectively provided with a first boss and a second boss, and the two ends of the spring are respectively sleeved on the first boss and the second boss.

7. An adjustable flexible follower rest as defined in claim 2 wherein: and a first limiting bolt leading into the sleeve is arranged on the side surface of one end, close to the adjusting screw, of the sleeve.

8. An adjustable flexible follower rest as defined in claim 2 wherein: the clamp holder is provided with a hoop opening, the hoop opening is sleeved on the sleeve, a second limiting bolt leading to the hoop opening is arranged on the side face of the clamp holder, the sleeve is cylindrical, a third plane which is parallel and axially symmetrical along the sleeve is cut on the outer side face of the sleeve, and a fourth plane which is parallel and axially symmetrical along the hoop opening is filled on the inner side face of the hoop opening correspondingly.