CN110976932A

CN110976932A - A lathe adjustable center high tool holder tool holder

Info

Publication number: CN110976932A
Application number: CN201910854460.3A
Authority: CN
Inventors: 朱军; 毛涛
Original assignee: Ningxia Vocational Technical College Of Industry And Commerce (ningxia Chemical Technical School School Of Mechanical And Electrical Engineering Ningxia Agricultural Mechanization School)
Current assignee: Ningxia Vocational Technical College Of Industry And Commerce (ningxia Chemical Technical School School Of Mechanical And Electrical Engineering Ningxia Agricultural Mechanization School)
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-04-10

Abstract

A lathe tool apron tool rest with adjustable center height comprises a tool rest base and a tool rest sliding seat, wherein a fixed tool rest sliding seat screw, a jacking screw, an ejection screw, a through groove hole matched with the fixed tool rest sliding seat screw, a jacking screw hole matched with the jacking screw and a tensioning screw hole matched with the tensioning screw are arranged on the tool rest base; a tool screw for pressing the inner hole, a drill ejection screw and a screw hole matched with the tool screw are arranged on the tool rest sliding seat; and a drill bit cutter mounting hole is also arranged and communicated with the drill bit ejection screw. And is provided with a slide screw positioning hole matched with the slide screw of the fixed knife rest. In order to facilitate the sliding of the tool rest sliding seat on the tool rest base, the bottom of the tool rest sliding seat is provided with an inclined plane boss and a groove matched with the inclined plane boss. The invention effectively solves the problems of unequal height of the machine tool center and the cutter center, can be used as a universal clamp, and has wide application range and outstanding multi-purpose effect.

Description

Adjustable center height tool apron tool rest of lathe

Technical Field

The invention belongs to the technical field of machining equipment, and particularly relates to a lathe adjustable center height tool apron tool rest which is used for installing a drill bit or a boring tool on a tool rest of a common lathe or a numerical control lathe for hole machining and can flexibly adjust the center height of the tool.

Background

When a common lathe or a numerical control lathe carries out hole machining, under the condition that the rotary center line of the drill bit and the center line of the lathe are not equal in height, the actual cutting front and back angles of the drill bit can be changed, so that the stress of the drill bit is increased, and the service life of the drill bit is reduced; simultaneously, the extra torque is added to cause the aperture to be enlarged; the central line of the hole is inclined; the quality of the inner bore surface is reduced. When the inner hole cutter is installed on the cutter frame for boring, if the center line of the cutter point and the center line of the lathe are not coincident, the actual cutting front and back angles of the inner hole cutter are changed, the quality of a machined surface is influenced, and even the cutter is broken. In the prior art, the center height of a cutter is adjusted by adding the cutter pads with different thicknesses below a common cutter rest, but the thicknesses of the cutter pads cannot be changed at will, the centers of the cutter pads and the cutter pads are not equal in height, and the adjusting process is time-consuming and labor-consuming.

Disclosure of Invention

The invention aims to provide a lathe tool apron and a lathe tool rest with adjustable center height, aiming at the condition that the rotary center line of a drill bit and the center line of a lathe are not equal in height when the conventional common lathe and a numerical control lathe are used for processing holes, so as to solve the problem that the center height of a machine tool and the center height of a cutter are not equal.

The purpose of the invention is realized by adopting the following technical scheme.

A lathe tool post with adjustable center height is designed into two parts, namely a tool post base and a tool post sliding seat. A fixed knife rest sliding seat screw, a jacking screw, a tensioning screw, a through groove hole matched with the fixed knife rest sliding seat screw, a jacking screw hole matched with the jacking screw and a tensioning screw hole matched with the tensioning screw are arranged on the knife rest base; the screw rod of the fixed knife rest sliding seat can just penetrate through the through slot hole and slide in the slot, so that the knife rest sliding seat can be conveniently fixed. The tool rest sliding seat is provided with a tool screw for pressing an inner hole, a drill bit ejection screw hole matched with the drill bit ejection screw and a sliding seat screw positioning hole matched with the fixed tool rest sliding seat screw. And a drill bit cutter mounting hole is also arranged and communicated with a drill bit ejection screw hole. In order to facilitate the sliding of the tool rest sliding seat on the tool rest base and increase the connection strength and the positioning precision between the tool rest base and the tool rest sliding seat, a groove is designed on the tool rest base, an inclined plane boss is designed at the bottom of the tool rest sliding seat, and the tool rest sliding seat are in transition fit design according to H7/k6, so that the tool rest sliding seat can flexibly slide and increase the connection strength;

the jacking screw hole and the tensioning screw hole are arranged on the side face of the knife rest base, the tensioning screw hole is a long groove hole, the tensioning screw penetrates through the long groove hole to be connected and screwed with the knife rest sliding seat, the center height of a cutter can be increased, and the long groove hole is used for enabling the tensioning screw to move up and down. The jacking screw rod hole is an internal thread hole, and the jacking screw rod can jack the tool rest sliding seat through the internal thread hole, so that the center height of the tool is reduced.

The cutter hole of the drill bit is a Morse No. 3 taper hole, and the clamping range of the drill bit can be 3-30 mm by replacing the Morse reducing sleeves with different numbers. In order to facilitate the disassembly of the drill bit, a drill bit ejection screw is arranged.

The drill bit tool hole of the tool rest sliding seat can be changed into a cylindrical hole matched with a universal cylindrical boring cutter for installing and clamping the boring cutter, so that the tool application range of the tool rest sliding seat is expanded.

Has the advantages that:

the invention effectively solves the problems of unequal height of the machine tool center and the cutter center, and can be used as a universal clamp. The drill bush below Morse number 3 is matched and can be used as a drilling clamp; the boring cutter sleeve can be used as an inner bore turning tool clamp. Wide application range and outstanding multi-purpose effect.

Drawings

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

Fig. 2 is a schematic view of the bottom structure of the base of the tool holder of the present invention.

FIG. 3 is an isometric view of the cartridge base of the present invention.

Fig. 4 is a schematic structural view of each screw hole of the base of the tool holder of the present invention.

FIG. 5 is a schematic diagram showing the position relationship between the inclined plane boss and each fastening screw on the slide carriage of the tool holder of the present invention.

FIG. 6 is a schematic view of the positions of the tool holes, drill ejection screw holes, compression inner hole tool screw holes and slide screw positioning holes on the tool rest slide of the present invention.

In the figure: 1-tool rest base, 2-tool rest slide, 3-compression internal hole tool screw, 4-drill ejection screw, 5-tightening screw, 6-tensioning screw, 7-fixed tool rest slide screw, 8-through slot hole, 9-tensioning screw hole, 10-tightening screw hole, 11-inclined plane boss, 12-compression internal hole tool screw hole, 13-fixed tool rest slide positioning hole, 14-drill ejection screw hole, 15-installation drill tool hole.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in fig. 1-6, a lathe tool rest with adjustable center height is designed into two parts, namely a tool rest base 1 and a tool rest sliding seat 2. A fixed cutter rest sliding seat screw 7, a jacking screw 5, a drill bit ejection screw 4, a through slot hole 8 matched with the fixed cutter rest sliding seat screw, a jacking screw hole 10 matched with the jacking screw, and a drill bit ejection screw hole 9 matched with the drill bit ejection screw are arranged on the cutter rest base 1; the fixed knife rest sliding seat screw 7 just can pass through the through-slot hole 8 and slide in the slot, so that the knife rest sliding seat 2 can be conveniently fixed. A tool screw 3 for pressing the inner hole, a drill bit ejection screw 4, a drill bit ejection screw hole 14 matched with the drill bit ejection screw, and a fixed tool rest slide screw hole 13 matched with the fixed tool rest slide screw are arranged on the tool rest slide 2. In order to facilitate the sliding of the tool rest sliding seat 2 on the tool rest base 1 and increase the connection strength and the positioning precision between the tool rest base and the tool rest sliding seat, the bottom of the tool rest sliding seat is provided with an inclined plane boss 11, the boss is 20mm wide, a groove matched with the inclined plane boss 11 is designed, the groove width of the groove is 20mm, and the groove and the inclined plane boss 11 are in transition fit design according to H7/k6, so that the tool rest sliding seat can flexibly slide and increase the connection strength;

the jacking screw hole 10 and the tensioning screw hole 9 are arranged on the side face of the tool rest base 1, the tensioning screw hole 9 is a long groove hole, the width of the long groove is 5.2mm, the tensioning screw 6 penetrates through the long groove hole to be connected and screwed with the tool rest sliding seat 2, the center height of a tool can be increased, and the long groove is used for enabling the screw 6 to move up and down. The jacking screw hole 10 is an internal thread hole, and the jacking screw 5 can jack the tool rest sliding seat 2 through the internal thread hole, so that the center height of the tool is reduced.

The bottom of the inclined plane boss below the knife rest slide seat 2 is provided with three M10 internal thread holes, which are just in fit connection with three fixed knife rest slide seat screw rods 7 on the knife rest base seat 1, and the fixed knife rest slide seat screw rods 7 are M10 internal hexagonal screw rods for fastening the knife rest base seat 1 and the knife rest slide seat 2. In order to conveniently disassemble the drill bit, a drill bit ejection screw 4 is arranged.

The mounting cutter hole 15 is a Morse No. 3 taper hole and is used for clamping a drill bit, and the clamping range of the drill bit can be 3-30 mm by replacing Morse reducing sleeves with different numbers.

Another embodiment of the tool rest slide of the present invention is: the mounting tool hole 15 may be configured as a cylindrical hole, which is matched with a general boring tool having a cylindrical outer circle, for mounting a clamping boring tool.

The contact surfaces of the tool rest base 1 and the tool rest sliding seat 2 are conical surfaces of 1: 5. By changing the mounting position, the tool center height can be changed. The center height of the cutter can be adjusted within +/-5 mm.

Claims

1. a lathe adjustable center high tool seat tool rest is characterized in that, this tool seat tool rest is designed into two parts by the traditional integral tool rest, namely tool rest base and tool rest sliding seat, on the tool rest base is provided with; Fixed tool rest sliding seat screw, jacking screw and ejecting screw, as well as through-slot holes matched with the fixed tool rest sliding seat screw, jacking screw holes matched with the jacking screw, and tensioning screw holes matched with the tensioning screw ;The tool holder sliding seat is provided with a pressing inner hole tool screw and a drill ejecting screw, a drill ejecting screw hole matched with the drill ejecting screw, and a sliding seat screw positioning hole matched with the fixed tool rest sliding seat screw; There is also a tool hole for installing the drill bit, which is connected with the screw hole of the drill bit. A groove is designed on the base, and a beveled boss is designed at the bottom of the tool holder slide.

2 . The adjustable center high tool seat tool rest of a lathe according to claim 1 , wherein the tool rest base and the tool rest sliding seat contact surface are both 1:5 tapered surfaces. 3 .

3. The adjustable center high tool seat tool holder of a lathe according to claim 1, characterized in that: the hole for installing the drill bit is a Morse No. 3 taper hole, and the drill bit can be clamped by changing Morse reducing sleeves of different numbers. The range is 3-30mm.

4. The adjustable center high tool seat tool holder of a lathe according to claim 1, characterized in that: the installation drill bit tool hole of the tool holder sliding seat can be changed to a cylindrical hole matched with a general cylindrical boring tool, which is used for Install the clamping boring tool.

5. The adjustable center-high tool seat tool holder of a lathe according to claim 1, characterized in that: a sloped boss is designed at the bottom of the tool rest sliding seat, and a concave boss that cooperates with the sloped boss is designed Slots, grooves and bevel bosses are designed according to H7/k6 transition fit.

6. The adjustable center high tool seat tool rest of a lathe according to claim 1, characterized in that: the through-slot hole provided under the tool rest base, the fixed tool rest sliding seat screw rod can just pass through and slide in the groove, which is convenient for Fixed knife holder slide.

7. The adjustable center height tool rest of a lathe according to claim 1 is characterized in that: a sliding seat screw positioning hole is arranged at the bottom of the boss under the tool rest sliding seat, which is exactly the same as the fixed tool rest on the tool rest base The sliding seat screw is matched and connected to fasten the tool rest base and the tool rest sliding seat.