CN210587213U

CN210587213U - Lathe follow rest

Info

Publication number: CN210587213U
Application number: CN201921517916.9U
Authority: CN
Inventors: 孙乃金; 韩照; 贺子龙; 涂齐才
Original assignee: Zhejiang Headman Intelligent Equipment Co ltd
Current assignee: Zhejiang Headman Intelligent Equipment Co ltd
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-05-22
Anticipated expiration: 2029-09-11

Abstract

The utility model provides a lathe follow rest belongs to mechanical technical field. It has solved current follower rest job instability scheduling problem. This lathe follow rest, which comprises a bracket, be fixed with the base on the support, be provided with the mounting hole on the base, install outer axle sleeve in the mounting hole, be fixed with the bearing between the lateral surface of outer axle sleeve and the hole wall of mounting hole, be fixed with left end lid and right-hand member end cover on the left end face of base and the right-hand member end face respectively, the outer lane centre gripping of bearing is fixed in between left end lid and the right-hand member lid, be equipped with convex fender shoulder and linked firmly the bearing rand on the lateral surface of outer axle sleeve, the inner circle centre gripping of bearing is fixed in and is kept off between shoulder and the bearing rand, it is equipped with interior axle sleeve in the hole of outer axle sleeve, be equipped with convex fender ring and be fixed with detachable axle sleeve rand on the lateral surface of interior axle sleeve. The lathe follow rest has the advantages of stable operation and the like.

Description

Lathe follow rest

Technical Field

The utility model belongs to the technical field of machinery, a lathe follow rest is related to.

Background

A lathe is a machine tool for turning a rotating workpiece mainly with a lathe tool. The lathe comprises a lathe body, a spindle box, a large carriage, a small carriage, a cutter assembly, a chuck, a tailstock and the like, wherein the cutter assembly comprises a cutter rest and a cutter, the chuck and the tailstock are used for clamping a workpiece, a spindle on the spindle box drives the workpiece to rotate, and the cutter on the cutter assembly cuts the workpiece. The head and the tail of the clamp and the tailstock clamping work, when a workpiece is a slender shaft, in order to improve the processing quality, a follow rest is often arranged on a lathe bed to support the work. The follow rest has the effects of reducing cutting resistance, reducing the influence of workpiece vibration on the cutter, improving the shape precision of the workpiece, reducing the surface roughness and the like, and can protect the cutter and improve the product quality. The traditional follow rest is generally provided with two supporting claws, and the two supporting claws are contacted with a workpiece to be attached for supporting. However, in the actual turning process, due to the downward gravity and inevitable bending of the workpiece, the workpiece cannot be attached to the two supporting claws, uneven stress is easily caused, and the machining quality is difficult to ensure.

Chinese patent literature document discloses a follower rest [ application number: CN 201120348909.8; the notice number is: CN202271190U ], which comprises a main body, a sleeve, a screw, a clamping ring, a bearing and an inner shaft sleeve, wherein the sleeve is positioned inside the left end of the main body and is connected with the main body through the screw, the bearing is arranged in an inner hole at the right end of a U-shaped groove of the main body, the bearing is fixed by the clamping ring, and the inner shaft sleeve is sleeved on an inner ring of the bearing. During machining, a workpiece is inserted into the inner shaft sleeve, rotates along with the main shaft in the inner shaft sleeve, and slides along with the cutter assembly in the axial direction in the inner shaft sleeve.

When workpieces with different sizes are processed, the inner shaft sleeve with the hole diameter corresponding to the workpiece needs to be replaced, so that the inner shaft sleeve can be taken out of the bearing inner ring. In foretell follow rest, there is not location structure between the left end of interior axle sleeve and the main part, when the work piece moved from the left side to the right side, caused interior axle sleeve to take place the displacement along the axial relative bearing easily, deviate from the bearing even to make follow rest work unstable.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a lathe follower, the technical problem of solution makes follower job stabilization.

The purpose of the utility model can be realized by the following technical proposal:

a lathe follower rest comprises a support, wherein a base is fixed on the support, a mounting hole is formed in the base, an outer shaft sleeve is installed in the mounting hole, a bearing is fixed between the outer side surface of the outer shaft sleeve and the hole wall surface of the mounting hole, and the lathe follower rest is characterized in that a left end cover is fixed on the left end surface of the base, a right end cover is fixed on the right end surface of the base, an outer ring of the bearing is clamped and fixed between the left end cover and the right end cover, a convex retaining shoulder is arranged on the right side of the bearing on the outer side surface of the outer shaft sleeve, a bearing retainer ring is fixedly connected on the left side of the bearing on the outer side surface of the outer shaft sleeve, an inner ring of the bearing is clamped and fixed between the retaining shoulder and the bearing retainer ring, an inner shaft sleeve matched with a workpiece is inserted in an inner hole of the outer shaft sleeve, a, the right side detachable that lies in outer axle sleeve on the lateral surface of interior axle sleeve is fixed with the axle sleeve rand, keep off the ring and lean on the left end face of outer axle sleeve, the axle sleeve rand supports and leans on the right-hand member face of outer axle sleeve.

The support is fixedly connected to a large carriage of a lathe, a workpiece is fixed on a main shaft and inserted into an inner hole of an inner shaft sleeve, a follow rest moves on the large carriage along with a cutter assembly during workpiece processing, and the inner shaft sleeve, an outer shaft sleeve and the workpiece rotate along with the main shaft. Because interior axle sleeve is fixed on outer axle sleeve through keeping off ring and axle sleeve rand, outer axle sleeve is fixed through keeping off the inner circle of shoulder and bearing rand and bearing, and the outer lane of bearing passes through left end lid and right-hand member lid fixed connection on the base, no matter the work piece from a left side to right slip or from the right side to left slip, the all stable fixing on the base of interior axle sleeve makes follower rest job stabilization.

When the workpiece machined by the lathe is changed into workpieces of other sizes, the inner shaft sleeve is also changed adaptively, the shaft sleeve clamping ring is taken down from the inner shaft sleeve, and then the shaft sleeve clamping ring is fixed well again after the corresponding new inner shaft sleeve is changed. Interior axle sleeve detachable installs in outer axle sleeve, can carry out the change of adaptability according to the size of work piece, makes this follow rest increase application range, has improved follow rest's commonality.

In the lathe follow rest, the right end cover is sleeved on the outer shaft sleeve, and a dustproof ring is arranged between the right end cover and the outer shaft sleeve.

The dustproof ring has a dustproof effect, reduces the possibility that impurities such as cutting scraps enter the bearing, enables the bearing to rotate smoothly, and enables the follow rest to work stably.

In the lathe follower rest, the hole wall surface at the left end of the inner sleeve is provided with a guide surface which is obliquely arranged outwards. The guide surface has a guide function, and a workpiece is conveniently inserted into the inner shaft sleeve.

In the lathe follow rest, a convex ring is arranged on the left end face of the right end cover, and the convex ring is inserted into the mounting hole and abuts against the right end face of the bearing outer ring. The setting of bulge loop makes the bearing fixed stable, is favorable to guaranteeing the stability of follow rest work.

In the lathe follow rest, the inner side surface of the right end cover is provided with a baffle, and the dust ring is positioned on the left side of the baffle and abuts against the baffle. The baffle has the effect of blockking, avoids the dust ring to deviate from the right-hand member lid at the in-process of follow rest work, makes follow rest job stabilization.

In the above lathe follower, the base is fixedly attached to the upper end of the support by a bolt. The detachable fixed connection is realized between the support and the base through the bolts, so that the base is convenient to install and replace.

Compared with the prior art, the utility model has the advantages of it is following:

the inner shaft sleeve is fixed on the outer shaft sleeve through a retaining ring and a shaft sleeve clamping ring, the bearing inner ring and the outer shaft sleeve are fixed with the bearing clamping ring through a retaining shoulder, the bearing outer ring and the base are fixed through a left end cover and a right end cover, and the left end cover and the right end cover are respectively fixedly connected to the left end face and the right end face of the base, so that the inner shaft sleeve is stably fixed on the base, and the follow rest is stable in operation. The dust ring is arranged to protect the bearing, so that the follow rest can work stably.

Drawings

FIG. 1 is a front view of the lathe follower mounted on a large carriage;

FIG. 2 is a top view of the lathe follower mounted on a carriage;

fig. 3 is a partial sectional view in the direction of a-a in fig. 2.

In the figure, 1, a bracket; 2. a base; 2a, mounting holes; 3. an outer sleeve; 3a, a shoulder; 3b, a bearing retainer ring; 4. a bearing; 5. a left end cap; 6. a right end cap; 6a, a convex ring; 6b, a baffle plate; 7. an inner sleeve; 7 a; a baffle ring; 7b, a shaft sleeve collar; 7c, a guide surface; 8. a dust ring; 9. a chuck; 10. a large carriage; 11. a small carriage; 12. a cutter assembly; 13. a bolt; 14. and (5) a workpiece.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1 to 3, a lathe follower mounted on a lathe includes a support 1, and a base 2 is fixed on the support 1. The lathe comprises a lathe body, a spindle box is arranged at the left end of the lathe body, a chuck 9 is arranged on the spindle box, the chuck 9 is used for clamping and fixing a workpiece 14, a large carriage 10 is arranged on the right side of the spindle box on the upper surface of the lathe body, a small carriage 11 is arranged on the large carriage 10, and a cutter assembly 12 is arranged on the small carriage 11. The support 1 is fixedly connected to the large carriage 10, and the base 2 is detachably and fixedly connected to the upper end of the support 1 through a bolt 13.

The upper end of the base 2 is provided with an installation hole 2a which is arranged along the axial direction, an outer shaft sleeve 3 is arranged in the installation hole 2a, and a bearing 4 is fixed between the outer side surface of the outer shaft sleeve 3 and the wall surface of the installation hole 2 a. A left end cover 5 is fixed on the left end face of the base 2, a right end cover 6 is fixed on the right end face of the base 2, and the outer ring of the bearing 4 is clamped and fixed between the left end cover 5 and the right end cover 6. The right end cover 6 and the left end cover 5 are sleeved on the outer shaft sleeve 3. And a convex ring 6a is arranged on the left end surface of the right end cover 6, and the convex ring 6a is inserted into the mounting hole 2a and abuts against the right end surface of the outer ring of the bearing 4. An annular bulge is arranged on the right end face of the left end cover 5, and the annular bulge is inserted into the mounting hole 2a and abuts against the left end face of the outer ring of the bearing 4. The right side that lies in bearing 4 on the lateral surface of outer axle sleeve 3 is provided with convex fender shoulder 3a, and the left side that lies in bearing 4 on the lateral surface of outer axle sleeve 3 is provided with the draw-in groove, fixedly connected with bearing rand 3b in the draw-in groove, and the inner circle centre gripping of bearing 4 is fixed in and is kept off between shoulder 3a and the bearing rand 3 b. An inner shaft sleeve 7 matched with a workpiece 14 is inserted into an inner hole of the outer shaft sleeve 3, and a guide surface 7c which is obliquely arranged outwards is arranged on the hole wall surface at the left end of the inner shaft sleeve 7. The left side that lies in outer axle sleeve 3 on the lateral surface of interior axle sleeve 7 is provided with convex fender ring 7a, and the right side that lies in outer axle sleeve 3 on the lateral surface of interior axle sleeve 7 is provided with the fixed slot, and detachable is fixed with axle sleeve rand 7b in the fixed slot, keeps off ring 7a and supports and lean on the left end face of outer axle sleeve 3, and axle sleeve rand 7b supports and leans on the right-hand member face of outer axle sleeve 3. A dustproof ring 8 is arranged between the right end cover 6 and the outer shaft sleeve 3, the dustproof ring 8 is fixed on the inner side surface of the right end cover 6, and the inner side surface of the dustproof ring 8 is attached to the outer side surface of the outer shaft sleeve 3 to form sealing. The inner side surface of the right end cover 6 is provided with a baffle 6b, and the dust ring 8 is positioned at the left side of the baffle 6b and is abutted against the baffle 6 b.

When the follow rest is assembled, the bearing 4 is sleeved on the outer shaft sleeve 3, so that the inner ring of the bearing 4 is abutted against the retaining shoulder 3a, and then the bearing retainer ring 3b is fixed in the clamping groove, so that the bearing 4 is fixed on the outer shaft sleeve 3; then, the outer shaft sleeve 3 and the bearing 4 are installed in the installation hole 2a of the base 2, the right end cover 6 provided with the dust ring 8 is fixed on the right end face of the base 2, and the left end cover 5 is fixed on the left end face of the base 2; then the inner shaft sleeve 7 is inserted into the outer shaft sleeve 3, the baffle ring 7a is abutted against the left end face of the outer shaft sleeve 3, and the shaft sleeve collar 7b is fixed in the fixing groove; the base 2 is then secured to the bracket 1 by bolts 13.

When the tool works, a workpiece 14 is fixed on the chuck 9, the workpiece 14 is inserted into an inner hole of the inner shaft sleeve 7, the workpiece 14 and a tool rest move together with the tool assembly 12 on the large planker 10 during machining, and the inner shaft sleeve 7, the outer shaft sleeve 3 and the workpiece 14 rotate together with the main shaft. Because inner shaft sleeve 7 is fixed on outer shaft sleeve 3 through keeping off ring 7a and shaft sleeve rand 7b, outer shaft sleeve 3 is fixed with the inner circle of bearing 4 through keeping off shoulder 3a and bearing rand 3b, and the outer lane of bearing 4 passes through left end lid 5 and right-hand member lid 6 fixed connection on base 2, no matter work piece 14 from left side to right side slip or from right side to left side slip, inner shaft sleeve 7 is all stable to be fixed on base 2, makes follower rest job stabilization. When the workpiece 14 machined by the lathe is changed into the workpiece 14 with other sizes, the inner shaft sleeve 7 is also changed adaptively, the shaft sleeve clamping ring 7b is taken down from the inner shaft sleeve 7, and then the shaft sleeve clamping ring 7b is fixed again after the corresponding new inner shaft sleeve 7 is changed. Interior axle sleeve 7 detachable installs in outer axle sleeve 3, can carry out the change of adaptability according to work piece 14's size, makes this follow rest increase application range, has improved follow rest's commonality.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A lathe follower rest comprises a support (1), wherein a base (2) is fixed on the support (1), a mounting hole (2a) is formed in the base (2), an outer shaft sleeve (3) is installed in the mounting hole (2a), a bearing (4) is fixed between the outer side face of the outer shaft sleeve (3) and the hole wall face of the mounting hole (2a), the lathe follower rest is characterized in that a left end cover (5) is fixed on the left end face of the base (2), a right end cover (6) is fixed on the right end face of the base (2), the outer ring of the bearing (4) is clamped and fixed between the left end cover (5) and the right end cover (6), a convex blocking shoulder (3a) is arranged on the right side of the bearing (4) on the outer side face of the outer shaft sleeve (3), a bearing clamping ring (3b) is fixedly connected to the left side of the bearing (4) on the outer side face of the outer shaft sleeve (3), the inner ring centre gripping of bearing (4) is fixed in and keeps off between shoulder (3a) and bearing rand (3b), insert in the hole of outer axle sleeve (3) be equipped with work piece (14) complex inner shaft sleeve (7), the left side that lies in outer axle sleeve (3) on the lateral surface of inner shaft sleeve (7) is provided with convex fender ring (7a), the right side detachable that lies in outer axle sleeve (3) on the lateral surface of inner shaft sleeve (7) is fixed with axle sleeve rand (7b), keep off ring (7a) and lean on the left end face of outer axle sleeve (3), axle sleeve rand (7b) support and lean on the right-hand member face of outer axle sleeve (3).

2. The lathe follower rest according to claim 1, wherein the right end cap (6) is sleeved on the outer shaft sleeve (3), and a dust ring (8) is arranged between the right end cap (6) and the outer shaft sleeve (3).

3. The lathe follower according to claim 1, wherein the hole wall surface of the left end of the inner sleeve (7) is provided with a guide surface (7c) inclined outward.

4. Lathe follower according to any of claims 1-3, wherein the right end cap (6) is provided with a protruding ring (6a) on its left end face, said protruding ring (6a) being inserted into the mounting hole (2a) and abutting against the right end face of the outer ring of the bearing (4).

5. The lathe follower according to claim 2, wherein the right end cap (6) has a baffle (6b) on its inner side, and the dust ring (8) is located on the left side of the baffle (6b) and abuts against the baffle (6 b).

6. A lathe follower according to any of claims 1-3, wherein the base (2) is fixedly attached to the upper end of the support (1) by means of bolts (13).