CN220782259U

CN220782259U - Quick replacement structure of lathe tailstock center

Info

Publication number: CN220782259U
Application number: CN202322215771.XU
Authority: CN
Inventors: 王成; 王国栋
Original assignee: Yitongjing Intelligent Equipment Suzhou Co ltd
Current assignee: Yitongjing Intelligent Equipment Suzhou Co ltd
Priority date: 2023-08-17
Filing date: 2023-08-17
Publication date: 2024-04-16
Anticipated expiration: 2033-08-17

Abstract

The utility model discloses a quick replacement structure of a tailstock center of a machine tool.A round cavity for installing a sleeve is arranged in a cylinder at the top of a tailstock body, and front and rear end surfaces of the round cavity are fixedly connected with a front end cover and a rear end cover through bolts respectively; the front part of the center of the sleeve is provided with a Morse taper hole, the rear part of the center of the sleeve is provided with an M20 threaded hole, and the M20 threaded hole is communicated with the bottom of the Morse taper hole; the center is arranged in the Morse taper hole, and the inner conical surface of the Morse taper hole and the Morse outer conical surface of the center are matched and positioned; the jackscrew is arranged in the M20 threaded hole, and when the center is disassembled, an inner hexagonal wrench is adopted to pass through a round hole in the middle of the rear end cover, and the center is ejected out by rotating the jackscrew. The utility model adds an M20 threaded hole at the rear part of the center of the sleeve, the M20 threaded hole is communicated with the bottom of the Morse taper hole of the sleeve, the center can be conveniently and rapidly replaced by rotating one jackscrew, and the device is very practical, efficient and free from damaging the quality and precision of the center.

Description

Quick replacement structure of lathe tailstock center

Technical Field

The utility model relates to the technical field of lathe tailstock center structures, in particular to a quick replacement structure of a lathe tailstock center.

Background

When a long shaft part is machined by a machine tool, most of the conditions need a tailstock center to tightly prop against a workpiece to realize machining, different centers can be used for machining different parts, different centers also have different disassembly and replacement methods, sometimes an operator can directly knock the center by a tool for quick replacement, and the center is easy to damage or destroy precision. Therefore, we propose a quick replacement structure of lathe tailstock top.

Disclosure of Invention

The utility model aims to provide a quick replacement structure for a tailstock center of a machine tool, so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the quick replacement structure of the tailstock center of the machine tool comprises a tailstock body, a center and a jackscrew, wherein a circular cavity for installing a sleeve is arranged in a cylinder at the top of the tailstock body, and front and rear end covers are fixedly connected with each other through bolts respectively;

the front part of the center of the sleeve is provided with a Morse taper hole, the rear part of the center of the sleeve is provided with an M20 threaded hole, and the M20 threaded hole is communicated with the bottom of the Morse taper hole;

the center is arranged in the Morse taper hole, and is matched and positioned by the inner conical surface of the Morse taper hole and the Morse outer conical surface of the center;

and the jackscrew is arranged in the M20 threaded hole, and when the center is disassembled, an inner hexagonal wrench is adopted to pass through a round hole in the middle of the rear end cover, and the center is ejected out by rotating the jackscrew.

Compared with the prior art, the utility model has the beneficial effects that: the utility model adds an M20 threaded hole at the rear part of the center of the sleeve, the M20 threaded hole is communicated with the bottom of the Morse taper hole of the sleeve, the center can be conveniently and rapidly replaced by rotating one jackscrew, and the device is very practical, efficient and free from damaging the quality and precision of the center.

Drawings

FIG. 1 is a schematic perspective view of the whole structure of the present utility model;

fig. 2 is a schematic cross-sectional view of the whole tailstock of the present utility model.

In the figure: 1. a tailstock body; 101. a cylinder; 102. a front end cover; 103. a rear end cover; 1031. a round hole; 104. a center; 105. an access panel; 106. a sleeve; 107. a jackscrew; 2. a slide rail; 3. a screw rod; 4. a motor; 5. a fixing seat.

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.

Referring to fig. 1-2, the present utility model provides a technical solution: the utility model provides a top quick replacement structure of lathe tailstock, includes tailstock body 1, top 104 and jackscrew 107, tailstock body 1 bottom slip joint is on two sets of slide rails 2 around, and tailstock body 1 is through motor 4 drive along slide rail 2 about.

The right end of the motor 4 is provided with a fixed seat 5, and a screw rod 3 at the output end of the motor 4 penetrates through the fixed seat 5 and is then screwed into a screw rod barrel in the middle of the lower end of the tailstock body 1.

An access panel 105 is fixed at the front end of the lower part of the tailstock body 1. Inside the access plate 105 is a cavity, in which an oil separator for lubricating the slide rail 2 and the screw rod 3 (i.e. the ball screw) is installed, so that the slide rail 2 and the screw rod 3 can be fully lubricated during movement, and the lubrication plays an important role in maintaining the precision and the service life of the tailstock body 1.

The cylinder 101 at the top of the tailstock body 1 is internally provided with a circular cavity for installing a sleeve 106, the front end face and the rear end face of the circular cavity are provided with threaded holes, and the front end face and the rear end face of the circular cavity are fixedly provided with a front end cover 102 and a rear end cover 103 through respective bolt connection;

the front part of the center of the sleeve 106 is provided with a Morse taper hole, the rear part of the center of the sleeve 106 is provided with an M20 threaded hole, and the M20 threaded hole is communicated with the bottom of the Morse taper hole;

the center 104 is arranged in the Morse taper hole, and is matched and positioned by the inner conical surface of the Morse taper hole and the Morse outer conical surface of the center 104, so that the center 104 cannot be easily separated from the sleeve 106;

a cavity is arranged on the upper part of the box body of the tailstock body 1, the inner diameter size of the cavity is measured, a proper tailstock sleeve (namely a cylinder 101) is selected according to the matching requirement of a micro gap (0.01 mm), the front part of a center hole of the cylinder 101 is provided with a Morse taper hole, the outer diameter is provided with a flange for connection and limiting, the cylinder 101 is arranged in the cavity, and the flange is tightly attached to the end face of the cavity;

the front end cover 102, the flange and the tailstock body 1 are fixed by bolts, the rear end cover 103 is directly fixed on the rear end surface of the cavity, and the center 104 is arranged in the Morse taper hole in the center of the cylinder 101 and is fixed by conical surface matching.

Four planes with the same size are arranged at the bottom of the tailstock body 1, each plane is provided with 4 through holes with the size of 9mm, and the through holes are connected with M8 threads on 4 sliding blocks of the sliding rail 2 through bolts, so that the sliding rail 2 is connected with the tailstock body 1;

a52 mm through hole is formed in the middle of the left side face of the bottom of the tail seat body 1, 6M 6 bolt holes are formed in the end face of the through hole, a screw rod 3 penetrates through the through hole, the holes in the flange end face of the screw rod 3 are connected with the holes in the M6 holes through 6 bolts, a motor 4 (namely a servo motor) is installed on a fixed seat 5 (namely a motor seat), 8M 8 bolts are fixed, and therefore the tail seat body 1 driven by the servo motor is installed.

Specifically, during use, the jackscrew 107 is installed in the threaded hole of the M20, and during disassembly of the center 104, an internal hexagonal wrench is adopted to pass through the round hole 1031 in the middle of the rear end cover 103, and the center 104 is ejected out by rotating the jackscrew 107.

After the tip 104 is ejected, the jackscrew 107 is retracted, the tip 104 to be replaced is assembled, and the replacement of the new tip 104 is completed.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a top quick replacement structure of lathe tailstock, includes tailstock body (1), top (104) and jackscrew (107), its characterized in that: a round cavity for installing a sleeve (106) is arranged in the cylinder (101) at the top of the tailstock body (1), and a front end cover (102) and a rear end cover (103) are fixedly connected with the front end surface and the rear end surface of the round cavity through bolts respectively;

the front part of the center of the sleeve (106) is provided with a Morse taper hole, the rear part of the center of the sleeve (106) is provided with an M20 threaded hole, and the M20 threaded hole is communicated with the bottom of the Morse taper hole;

the center (104) is arranged in the Morse taper hole, and is matched and positioned by the inner conical surface of the Morse taper hole and the Morse outer conical surface of the center (104);

the jackscrew (107) is arranged in the threaded hole of the M20, and when the center (104) is disassembled, an inner hexagonal wrench is adopted to penetrate through a round hole (1031) in the middle of the rear end cover (103), and the center (104) is ejected out by rotating the jackscrew (107).

2. The quick change structure of a tailstock center of a machine tool according to claim 1, wherein: the bottom of the tailstock body (1) is connected to the front and rear groups of sliding rails (2) in a sliding way, and the tailstock body (1) is driven by a motor (4) to move left and right along the sliding rails (2).

3. The quick change structure of a tailstock center of a machine tool according to claim 2, wherein: the right end of the motor (4) is provided with a fixed seat (5), and a screw rod (3) at the output end of the motor (4) penetrates through the fixed seat (5) and is then screwed into a screw rod barrel at the middle part of the lower end of the tailstock body (1).

4. The quick change structure of a tailstock center of a machine tool according to claim 1, wherein: an access panel (105) is fixed at the front end of the lower part of the tailstock body (1).