CN222944967U

CN222944967U - Center follower rest for automatic material pulling processing of slender shaft

Info

Publication number: CN222944967U
Application number: CN202421433185.0U
Authority: CN
Inventors: 房磊; 孙其飞
Original assignee: Jinan Libang Numerical Control Equipment Co ltd
Current assignee: Jinan Libang Numerical Control Equipment Co ltd
Priority date: 2024-06-21
Filing date: 2024-06-21
Publication date: 2025-06-06
Anticipated expiration: 2034-06-21

Abstract

The utility model discloses a central tool rest for automatic material drawing processing of slender shafts, and relates to the technical field of lathe processing. Its structure includes a tool rest body installed on a center support plate of a lathe; three telescopic supports are installed on the tool rest body in an equilateral triangle shape; the telescopic supports are connected and fixed by a first bolt with a handle; the telescopic support includes a guide seat installed on the tool rest body, and a pressure head for rolling connection with the slender shaft is installed on one end of the guide seat in a straight line; a long adjustment bolt with a handle is threadedly connected to the other end of the guide seat; a spring is installed inside the guide seat, and the spring abuts against the pressure head. The utility model is provided with a tool rest body installed on a center support plate of a lathe, and three telescopic supports are installed in an equilateral triangle shape; by adjusting the telescopic supports, slender shafts of different diameters can be adapted, thereby improving the versatility of the device; at the same time, the tool rest also has the advantages of simple structure, flexible and convenient adjustment, and is suitable for popularization and use in slender shaft processing operations.

Description

Center follower rest for automatic material pulling processing of slender shaft

Technical Field

The utility model belongs to the technical field of lathe machining, and particularly relates to a central follower rest for automatic material pulling machining of an slender shaft.

Background

In the field of machining, machining of an elongated shaft has been a technical problem. Because the ratio of the length to the diameter of the slender shaft is large, the slender shaft is extremely easy to vibrate and deform in the processing process, so that the processing precision and the surface quality are affected. To address this problem, a follower rest is typically used to support and guide the elongate shaft. The follower rest has a great influence on the machining efficiency if the time course of positioning and adjusting the slender shaft. The patent of the utility model with the issued publication number of CN201371251Y is a sleeved follower rest, and the follower rest has small application range and is relatively complex to manufacture and install.

In order to solve the problems, the utility model provides a central follower rest for automatic material pulling processing of an slender shaft.

Disclosure of utility model

The utility model aims to provide a central follower rest for automatic material pulling processing of an slender shaft, which is quick and convenient to center, can adapt to slender shafts with different diameters and improves the universality of a device through a follower rest body arranged on a supporting plate in a lathe and three telescopic supports arranged in a regular triangle shape.

In order to solve the technical problems, the utility model is realized by the following technical scheme:

The utility model discloses a central follower rest for automatic slender shaft pulling processing, which comprises a follower rest body arranged on a supporting plate in a lathe, wherein three telescopic supports are arranged on the follower rest body in regular triangle distribution, the telescopic supports are fixedly connected through first belt handle bolts, each telescopic support comprises a guide seat arranged on the follower rest body, one end of each guide seat is in linear insertion connection with a pressing head matched with the slender shaft in a rolling connection manner, the other end of each guide seat is in threaded penetration connection with a belt handle adjusting long bolt, and springs are arranged in the guide seats and are in abutting connection with the pressing heads.

The preferable technical scheme is that the follower rest body comprises a C-shaped circular plate, three first circular through holes which are radially arranged are uniformly distributed on the outer annular surface of the C-shaped circular plate, first rectangular guide grooves are axially symmetrically formed in the inner wall of each first circular through hole, three first threaded holes which are communicated with the first circular through holes and are in threaded connection fit with the first handles are formed in the side face of the C-shaped circular plate, supporting vertical plates which extend oppositely are fixed on the side face of the C-shaped circular plate, and two second threaded holes are formed in the supporting vertical plates.

According to the preferable technical scheme, the guide seat comprises a cylinder, a second rectangular guide groove is formed in one end of the cylinder, the spring is arranged at the bottom in the second rectangular guide groove, rectangular guide protrusions matched with the first rectangular guide groove are integrally formed on the outer wall of the same end of the cylinder in an axisymmetric mode, a third threaded hole communicated with the second rectangular guide groove is formed in the other end of the cylinder, and the third threaded hole is in threaded connection with the long bolt with the handle.

According to the preferable technical scheme, the pressure head comprises a rectangular rod in sliding fit with the second rectangular guide groove, a kidney-shaped long groove is formed in one side wall of the rectangular rod, a fourth threaded hole communicated with the second rectangular guide groove is formed in the outer wall of the cylinder, a second bolt with a handle is connected in the fourth threaded hole in a threaded mode, the end portion of the second bolt with the handle is arranged in the kidney-shaped long groove, two single lugs are arranged at the free end of the rectangular rod, and a bearing is arranged between the two single lugs through a pin shaft and a buckle.

As a preferable technical scheme of the utility model, a row of round grooves are formed in one rectangular guide protrusion.

The utility model has the following beneficial effects:

1. According to the utility model, the three telescopic supporting pressure heads are used for uniformly distributed clamping and positioning of the slender shaft, the follower rest body is arranged on the supporting plate in the lathe, and the follow-up movement is realized in the moving process of the turning tool, so that the follow-up support is realized, the stability of the turning process is improved, the vibration and deformation of the slender shaft in the machining process can be effectively reduced, and the turning precision is improved.

2. The telescopic support is suitable for the slender shafts with different diameters by adjusting the long bolt with the handle, so that the follower rest body can be suitable for the slender shaft processing with different diameter ranges, the universality of the device is improved, the position of the pressing head is allowed to be quickly adjusted by the design that the first bolt with the handle is screwed into the circular groove, the time for replacing a tool or adjusting the device is saved, the telescopic support can be adjusted by simply rotating the screw, and an operator can conveniently and quickly adjust the clamping force and the position according to actual needs.

3. According to the utility model, the design of the rectangular guide groove and the rectangular guide protrusion prevents the axial deflection of the telescopic support, and ensures the stability and reliability of the telescopic support.

4. When turning is finished, the automatic material pulling can be realized through the elastic force provided by the spring, so that the working efficiency is improved and the labor cost is reduced.

Of course, it is not necessary for any one product to practice the utility model to achieve all of the advantages set forth above at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural view of a central follower rest for automatic drawing processing of an elongated shaft.

Fig. 2 is a schematic view of the structure of the follower holder body.

Fig. 3 is a schematic structural view of the telescopic support.

Fig. 4 is an axial cross-sectional schematic view of a telescoping support.

Fig. 5 is a schematic structural view of the guide holder.

Fig. 6 is a schematic structural diagram of a ram.

In the drawings, the list of components represented by the various numbers is as follows:

The novel telescopic support comprises a 1-follower holder body, a 2-telescopic support, a 3-first shank bolt, an 11-C-shaped annular plate, a 12-first circular through hole, a 13-first rectangular guide groove, a 14-first threaded hole, a 15-supporting vertical plate, a 16-second threaded hole, a 21-guide seat, a 22-press head, a 23-shank adjusting long bolt, a 24-spring, a 25-second shank bolt, a 211-cylinder, a 212-second rectangular guide groove, a 213-rectangular guide protrusion, a 214-third threaded hole, a 215-fourth threaded hole, a 216-circular groove, a 221-rectangular rod, a 222-waist circular long groove, a 223-single lug and a 224-bearing.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

First embodiment:

Referring to fig. 1-6, the utility model discloses a central follower rest for automatic material pulling processing of an slender shaft, which comprises a follower rest body 1 arranged on a supporting plate in a lathe. Three telescopic supports 2 are arranged on the follower rest body 1 in regular triangle distribution. The telescopic support 2 is fixedly connected through a first handle bolt 3.

The follower rest body 1 comprises in particular a C-shaped circular ring plate 11. The outer ring surface of the C-shaped annular plate 11 is uniformly provided with three first radial circular through holes 12. The inner wall of the first round through hole 12 is axially symmetrically provided with a first rectangular guide groove 13. Three first threaded holes 14 communicated with the first circular through holes 12 and connected and matched with the first handle bolts 3 are formed in the side face of the C-shaped circular plate 11. The side surfaces of the C-shaped annular plate 11 are fixed with supporting vertical plates 15 which extend oppositely. The support riser 15 is provided with two second threaded holes 16. The supporting vertical plate 15 is fixedly connected with the supporting plate in the lathe through bolts, and the pressing head 22 on the follow-up rest body 1 is arranged on one side of the lathe tool and follows the movement of the lathe tool. The first rectangular guide groove 13 formed in the inner wall of the first circular through hole 12 can prevent axial deflection of the telescopic support 2.

The telescopic support 2 comprises a guide seat arranged on the follower rest body 1. One end of the 21 guide seat 21 is inserted and connected with a pressure head 22 matched with the slender shaft in a rolling way. The other end of the guide seat 21 is connected with an adjusting long bolt 23 with a handle in a threaded penetrating way. The guide holder 21 internally installs spring 24, and spring 24 and pressure head 22 butt. The guide holder 21 includes a cylindrical body 211. A second rectangular guide groove 212 is formed at one end of the cylinder 211. The spring 24 is disposed at the bottom of the second rectangular guide slot 212. The outer wall of the same end of the cylinder 211 is integrally formed with a rectangular guide protrusion 213 which is matched with the first rectangular guide groove 13 in an axial symmetry manner. The other end of the cylindrical body 211 is provided with a third screw hole 214 communicated with the second rectangular guide groove 212. The third threaded hole 214 is in threaded connection with the shank adjustment long bolt 23. The ram 22 includes a rectangular bar 221 that slidably mates with the second rectangular guide slot 212. A waist-round long groove 222 is formed on one side wall of the rectangular rod 221. The outer wall of the cylinder 211 is provided with a fourth threaded hole 215 communicated with the second rectangular guide groove 212. The fourth threaded hole 215 is internally threaded with a second shank bolt 25, and the end of the second shank bolt 25 is disposed in the oblong slot 222, while the spring 24 is in a compressed state, which provides a compressive spring force sufficient to position the elongate shaft for high rotation in a minimum state. Two single lugs 223 are mounted on the free end of the rectangular bar 221. A bearing 224 is mounted between the two single lugs 223 through a pin shaft and a buckle. The axis of the bearing 224 is parallel to the axis of the elongate shaft, and the bearing 224 is in rolling connection with the surface of the elongate shaft.

The structural design of the pressure head 22 and the guide seat 21 and the second bolt 25 with handle are matched, so that the effective use range of the pressure head 22 is limited, and the direct judgment is convenient in the process of clamping the slender shaft.

When the telescopic support 2 is used, the free end of the slender shaft is coaxially fixed by the tail frame center, then the end parts of the handle adjusting long bolts 23 at the tail parts of the three telescopic supports 2 are respectively adjusted to push the end parts of the handle adjusting long bolts 23 to the end parts of the pressing heads 22, the three pressing heads 22 axially position the heel knife parts of the slender shaft, then each handle adjusting long bolt 23 reversely rotates for half a circle, the jump among the surface roughness re-bearings 224 of the permitted slender shaft at the initial stage is met, the three pressing heads 22 still keep in place under the action of the springs 24, the three bearings 224 are matched with the slender shaft in a high-speed rolling way in the moving process of the supporting plate in the lathe when the slender shaft is positioned, and the elasticity of the springs 24 provides clamping and positioning force. And when turning is finished and the slender shaft is ready to be pulled out for the rest part of processing, the three-rotation chuck on the lathe is loosened, and the supporting plate in the lathe is moved. The three pressure heads 22 clamp the slender shaft under the elasticity of the springs 24, so that automatic material pulling is realized.

The follower rest body 1 and the telescopic support 2 are simple and reliable in structure, flexible and convenient to adjust, and suitable for popularization and use in slender shaft machining operation.

One of the rectangular guide projections 213 is provided with a row of circular grooves 216. The first bolt with handle 3 is screwed into the circular groove 216 at different positions and the distance from the central line of the C-shaped circular plate 11 when the pressure head 222 is fully extended is adjusted, so that the telescopic support 2 is applicable to slender shafts with different diameter ranges, and the fine application range of the telescopic support 2 is improved.

In the description of the present specification, reference to the terms "one embodiment," "example," "specific example," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model. The utility model is limited only by the claims and the full scope and equivalents thereof.

Claims

1. A central tool rest for automatic drawing of slender shafts, characterized in that:

It comprises a tool holder body (1) mounted on a center support plate of a lathe; three telescopic supports (2) are mounted on the tool holder body (1) in a regular triangle arrangement; the telescopic supports (2) are connected and fixed by first shank bolts (3);

The telescopic support (2) comprises a guide seat (21) mounted on the follower frame body (1); a pressure head (22) which is linearly plugged and mounted on one end of the guide seat (21) and is in rolling connection with the slender shaft; a long adjustment bolt (23) with a handle is threadedly penetrated and connected to the other end of the guide seat (21); a spring (24) is installed inside the guide seat (21), and the spring (24) is in contact with the pressure head (22).

2. The central tool rest for automatic drawing processing of slender shafts according to claim 1 is characterized in that the tool rest body (1) comprises a C-shaped annular plate (11); three radially arranged first circular through holes (12) are evenly distributed on the outer ring surface of the C-shaped annular plate (11); a first rectangular guide groove (13) is axially symmetrically provided on the inner wall of the first circular through hole (12); three first threaded holes (14) are provided on the side surface of the C-shaped annular plate (11) and are connected to the first circular through holes (12) and are connected to the first handle bolts (3); a supporting vertical plate (15) extending towards each other is fixed on the side surface of the C-shaped annular plate (11); and two second threaded holes (16) are provided on the supporting vertical plate (15).

3. The center tool rest for automatic drawing processing of slender shafts according to claim 2 is characterized in that the guide seat (21) includes a cylinder (211); a second rectangular guide groove (212) is provided at one end of the cylinder (211); the spring (24) is placed at the inner bottom of the second rectangular guide groove (212); a rectangular guide protrusion (213) cooperating with the first rectangular guide groove (13) is integrally formed axially symmetrically on the outer wall at the same end of the cylinder (211); a third threaded hole (214) connected to the second rectangular guide groove (212) is provided at the other end of the cylinder (211); the third threaded hole (214) is threadedly connected to the handle adjustment bolt (23).

4. The center tool rest for automatic drawing processing of a slender shaft according to claim 3 is characterized in that the pressing head (22) includes a rectangular rod (221) that slides with the second rectangular guide groove (212); a side wall of the rectangular rod (221) is provided with a waist-shaped long groove (222); an outer wall of the cylinder (211) is provided with a fourth threaded hole (215) that is connected to the second rectangular guide groove (212); the inner thread of the fourth threaded hole (215) is connected with a second handle bolt (25), and the end of the second handle bolt (25) is placed in the waist-shaped long groove (222); two single ears (223) are installed at the free end of the rectangular rod (221); a bearing (224) is installed between the two single ears (223) through a pin and a buckle.

5. The central tool rest for automatic drawing processing of slender shafts according to claim 4, characterized in that a row of circular grooves (216) is provided on one of the rectangular guide protrusions (213).