CN202367507U

CN202367507U - High-rigidity connecting structure of spindle and knife handle

Info

Publication number: CN202367507U
Application number: CN 201120562759
Authority: CN
Inventors: 陈鹏; 黄强; 罗觅知; 李翠萍; 杨丽
Original assignee: Chongqing Machine Tool Group Co Ltd
Current assignee: Chongqing Machine Tool Group Co Ltd
Priority date: 2011-12-29
Filing date: 2011-12-29
Publication date: 2012-08-08
Anticipated expiration: 2021-12-29

Abstract

The utility model discloses a high-rigidity connecting structure of a spindle and a knife handle, which comprises the spindle and the knife handle, wherein the knife handle comprises a locating cone section with the conicity to be 1:10 and a locating shaft shoulder arranged at a large end of the locating cone section. The spindle is provided with a locating cone hole with the same conicity as the locating cone section, the locating cone section is inserted into the locating cone hole and is in interference fit with the locating cone hole, and the locating shaft shoulder is attached to the end face of the spindle. A threaded hole is arranged in the middle of the knife handle along the axial direction, a SK type pop rivet in threaded fit with the threaded hole is arranged in the threaded hole, and a SK type pull claw matched with the SK type pop rivet is arranged in the spindle. The spindle and the knife handle are in over-location fit with each other, the cone locating surface and the end face locating surface of both the spindle and the knife handle can limit swing of the knife handle, and accordingly the composite structure is good in rigidity and suitable for high-speed cutting. Simultaneously, due to the fact that the length of the locating cone section of the knife handle is short, the stroke of the pull claw in tightening and loosening the knife handle is short, the consumed time for knife replacement is little, and the knife replacement speed can be improved. Simultaneously, the SK type pop rivet and the SK type pull claw are simple in structure, strong in universality and low in manufacture cost.

Description

A kind of main shaft and the handle of a knife high structure that is rigidly connected

Technical field

The utility model relates to a kind of lathe, particularly the main shaft of lathe and handle of a knife.

Background technology

The traditional machine tool chief axis and the combining structure of handle of a knife are: handle of a knife adopts the tapering handle of a knife of 7:24, and handle of a knife is provided with SK type blind rivet, through the pulling claw that cooperates with SK type blind rivet handle of a knife is fixed on the cutter shaft.This Knife handle structure manufacturing is simple, and cost of manufacture is lower, but it has following shortcoming:

1, only depends on conical surface location, a little less than the coupling stiffness.

2, taper shank is longer, during high-speed cutting, and profound height, contact stiffness is little, and the taper shank swing is bigger.

3, locating surface broad, repetitive positioning accuracy is not high.

4, the handle of a knife tapering more greatly, longer, be unfavorable for rapid changing knife.

Therefore need that cutter shaft handle of a knife fit structure improves in the prior art, to eliminate the defective that existing handle of a knife cutter shaft fit structure exists.

The utility model content

In view of this; The purpose of the utility model provides a kind of main shaft and handle of a knife fit structure; It has that orientational cone-shaped surface is short, rigidity is high, be suitable for high-speed cutting, characteristics such as tool-changing speed is fast, low cost of manufacture, can eliminate the shortcoming that existing cutter shaft handle of a knife combining structure exists.

A kind of main shaft of the utility model and the handle of a knife high structure that is rigidly connected comprises main shaft and handle of a knife, and handle of a knife comprises that tapering is the locating cone section and the location shaft shoulder that is arranged at locating cone Duan Daduan of 1:10, and main shaft is provided with the location taper hole identical with locating cone section tapering; Said locating cone section is inserted the location taper hole and is fitted with its interference fit and the location shaft shoulder and main shaft end face, and main shaft and handle of a knife formed the location fit structure; Said handle of a knife middle part is provided with screwed hole vertically, is provided with the SK type blind rivet with its threaded engagement in the said screwed hole, is provided with the SK type pulling claw that cooperates with SK type blind rivet in the main shaft.

The beneficial effect of the utility model: a kind of main shaft of the utility model and the handle of a knife high structure that is rigidly connected; Handle of a knife and main shaft were that the location cooperates; Both paniculidine planes and end face locating surface all can limit the swing of handle of a knife, so this combining structure good rigidly, are suitable for high-speed cutting; Simultaneously because handle of a knife locating cone segment length is shorter, pulling claw tension and to loosen the stroke of handle of a knife shorter, tool changing is consuming time few, can improve tool-changing speed; And SK type blind rivet and SK type pulling claw are simple in structure, highly versatile, low cost of manufacture.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is the be rigidly connected cutaway view of structure of a kind of main shaft of the utility model and handle of a knife height.

The specific embodiment

As shown in the figure; A kind of main shaft of present embodiment and the handle of a knife high structure that is rigidly connected; Comprise main shaft 1 and handle of a knife 2, handle of a knife 2 comprises that tapering is the locating cone section 2a and the location shaft shoulder 2b that is arranged at locating cone Duan Daduan of 1:10, and main shaft 1 is provided with and the identical location taper hole of locating cone section 2a tapering; Said locating cone section 2a inserts the location taper hole and fits with its interference fit and location shaft shoulder 2b and main shaft end face, and main shaft 1 formed the location fit structure with handle of a knife 2; Said handle of a knife 2 middle parts are provided with screwed hole 2c vertically, are provided with the SK type blind rivet 3 with its threaded engagement in the said screwed hole, are provided with the SK type pulling claw 4 that cooperates with SK type blind rivet 3 in the main shaft 1.

This a kind of main shaft and the handle of a knife high structure that is rigidly connected, its SK type pulling claw 4 is connected with telescopic oil cylinder, and SK type pulling claw is buckled in outward on the SK type blind rivet 3; Through telescopic oil cylinder just handle of a knife 2 tension be fitted on the main shaft 1; Under the extruding of the location of main shaft 1 taper hole inwall, handle of a knife locating cone section 2a produces distortion, and the main shaft end face and the location shaft shoulder are fitted; Main shaft and handle of a knife formed the location fit structure, crossed and to locate the be rigidly connected rigidity of structure of this a kind of main shaft of enhancing that fit structure can be very big and handle of a knife height.Owing to be provided with screwed hole 2c in the handle of a knife, make locating cone section distortion under the main shaft extruding of handle of a knife can be easier to realize.Simultaneously because the combining structure good rigidity, the locating cone section 2a length of handle of a knife can be shorter, thereby make the pulling claw tension and loosen the stroke of handle of a knife shorter, and tool changing is consuming time few, can improve tool-changing speed; And SK type blind rivet 3 is simple in structure with SK type pulling claw 4, highly versatile, low cost of manufacture.

Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although with reference to preferred embodiment the utility model is specified, those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model; And not breaking away from the aim and the scope of the utility model technical scheme, it all should be encompassed in the middle of the claim scope of the utility model.

Claims

1. main shaft and the handle of a knife high structure that is rigidly connected comprises main shaft and handle of a knife, and it is characterized in that: handle of a knife comprises that tapering is the locating cone section and the location shaft shoulder that is arranged at locating cone Duan Daduan of 1:10, and main shaft is provided with the location taper hole identical with locating cone section tapering; Said locating cone section is inserted the location taper hole and is fitted with its interference fit and the location shaft shoulder and main shaft end face, and main shaft and handle of a knife formed the location fit structure; Said handle of a knife middle part is provided with screwed hole vertically, is provided with the SK type blind rivet with its threaded engagement in the said screwed hole, is provided with the SK type pulling claw that cooperates with SK type blind rivet in the main shaft.