CN206263281U

CN206263281U - A kind of practice-training teaching external screw cutting tool

Info

Publication number: CN206263281U
Application number: CN201621286034.2U
Authority: CN
Inventors: 刘伟; 宋翔宇; 杨世聪; 梅刚
Original assignee: Sichuan Engineering Technical College
Current assignee: Sichuan Engineering Technical College
Priority date: 2016-11-28
Filing date: 2016-11-28
Publication date: 2017-06-20
Anticipated expiration: 2026-11-28

Abstract

The utility model discloses a kind of practice-training teaching external screw cutting tool, including knife bar, edge bearing and blade, the blade is the diamond structure of strip, blade two ends have the point of a knife for stretching out, the root of point of a knife has the insert groove in the chip curling groove of indent, the edge bearing with matching blade shapes, and edge bearing bottom is ramp structure, and be assemblied in the anterior edge bearing groove of knife bar, it is fixed by bearing and screw.The utility model is improved by original teaching with external screw cutting tool, makes the positioning of blade more accurate, and clamping more facilitates, and improves the durability of blade, is adapted to be promoted the use of in practice-training teaching.

Description

A kind of practice-training teaching external screw cutting tool

Technical field

The utility model is related to teaching aid, specifically a kind of practice-training teaching external screw cutting tool.

Background technology

Its blade of a kind of external screw cutting tool used in practice-training teaching only has one and uses orientation at present, in teaching demonstration During once occur spring sword or to forge a knife, it is necessary to re-replace blade, be replaced the blade for getting off due to its nose part Point being wound, area is excessive to be will be unable to reuse, and wastes blade value in itself, and point of a knife position also without chip area, will Directly result in blade chip removal not smooth, reduce durability, shorten the service life of teaching aid, will so increase teaching process institute The cost of needs.

The content of the invention

The purpose of this utility model is：External screw cutting tool used by existing teaching is improved further, knife is improved The utilization ratio of piece, and facilitate blade to be positioned and clamping.

Technical solution adopted in the utility model is：

A kind of practice-training teaching external screw cutting tool, including knife bar, edge bearing and blade, the blade are mainly connected by knife bar Pressing plate blade is locked on knife bar by edge bearing, the blade is the diamond structure of strip, the two ends difference of blade With the point of a knife for stretching out, the root of the often end point of a knife of blade has the chip curling groove of indent.

The edge bearing has the insert groove of matching strip diamond structure blade, one end knife of the blade that the edge bearing is assembled Point extends from the front end of edge bearing, other end point of a knife is hidden in the insert groove of edge bearing.

The point of a knife of the blade is the 60 ° of structures that lean forward；Further, it is outer oblique that the chip curling groove of the blade opens up angle 15 ° of structures；Further, the upper groove surface indent gradient angle of the chip curling groove be 0 °, lower groove face indent angle of inclination be 15°。

The edge bearing is assemblied in the anterior edge bearing groove of knife bar with the ramp structure of bottom, the knife bar at the edge bearing groove rear portion Bearing is provided with, the bearing is connected with ejection screw, front end and the edge bearing rear end of the ejection screw with screw thread feeding mode Face abuts；Preferably, the bevel inclination angle of the edge bearing bottom is 100 °.

The beneficial effects of the utility model are：

The original unilateral point of a knife of blade is changed to the utility model the bilateral point of a knife of front and rear sides, and in point of a knife root Portion increased chip curling groove, and so the point of a knife of side can turn around to use the point of a knife of opposite side in time after damaging wherein, without standard Standby new blade, improves the durability of blade；Improvement of the utility model to edge bearing makes blade in cutting, and side is not used Point of a knife protected by insert groove, reduce double-pole sharp knife piece using the influence suffered by process, and ensure that blade is determined The accuracy of position, is easy to clamping.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the fit structure schematic diagram of blade and edge bearing in Fig. 1；

Fig. 3 is the top view of Fig. 2；

Fig. 4 is the structural representation of edge bearing in Fig. 2.

Label is represented in figure：

1- knife bars, 2- edge bearings, 3- blades, 4- pressing plates, 5- housing screws, 6- volumes is cut groove, 7- bearings, 8- fixing screws, 9- Ejection screw, 10- insert grooves.

Specific embodiment

The utility model is further described below in conjunction with the accompanying drawings：

As shown in figure 1, the utility model provides a kind of practice-training teaching external screw cutting tool, including knife bar 1, edge bearing 2 and knife Piece 3, the pressing plate 4 that the blade 3 is mainly connected by knife bar 1 is passed through edge bearing 2 and is locked on knife bar 1, on pressing plate 4 It is also equipped with housing screw 5 to be reinforced, the blade 3 is the diamond structure of strip（As shown in Figure 3）, the two ends point of blade 3 The point of a knife that Ju You do not stretch out, the root of the often end point of a knife of blade 3 has the chip curling groove 6 of indent（As shown in Figure 2）；The knife The point of a knife of piece 3 is inclined forwards, and point of a knife is 60 ° with the angle of horizontal plane, and the chip curling groove 6 of the point of a knife root is similarly bevelled junction Structure, its outward-dipping angle is 15 °, and specifically, the upper groove surface indent gradient angle of the chip curling groove 6 is 0 °, lower groove Face indent angle of inclination is 15 °.

The edge bearing 2 has the insert groove 10 of matching strip diamond structure blade 3（As shown in Figure 4）, to enter to blade 3 Row is installed and fixed, and the blade 3 that edge bearing 2 is assembled wherein one end point of a knife extends from the front end of edge bearing 2, other end point of a knife is hidden In the insert groove 10 of edge bearing 2, protected using 10 pairs of points of a knife of insert groove, prevent it from being collapsed by external force in the course of the work Split；The edge bearing 2 is assemblied in the edge bearing groove of the front portion of knife bar 1 with the ramp structure of bottom, and the angle of inclination on its inclined-plane is 100 °, The knife bar 1 at the edge bearing groove rear portion is provided with bearing 7, and the bearing 7 is connected with ejection screw 9 with screw thread feeding mode, described The front end for ejecting screw 9 abuts with the rear end face of edge bearing 2, fixing screws 8 is additionally provided with the outer surface of bearing 7, by above-mentioned part Realize clamping and fixation of the edge bearing 2 on knife bar 1.

The need for its dimensional parameters of practice-training teaching external screw cutting tool described in the utility model can be according to teaching demonstration Set, a kind of preferred design parameter is given below：The length of the blade 3 is 22mm, and width is 6mm, is highly 6mm；Institute The length of edge bearing 2 is stated for 22mm, width is 6mm, and the height of the front end of edge bearing 2 is 6mm, and the height of the rear end of edge bearing 2 is 9mm.Entering During row teaching demonstration, once wherein there is situation about damaging in one end point of a knife, you can unclamp housing screw 5 and more allowing blade replacement 3 direction, is worked on other end point of a knife, to save the time of more allowing blade replacement, also improves the utilization ratio of blade；Together When, the point of a knife for being located at the rear end of edge bearing 2 is protected by insert groove 10, reduce the influence caused to it during use.This Practice-training teaching external screw cutting tool described in utility model is not only convenient for the positioning and clamping of blade, while also save imparting knowledge to students into This.

Claims

1. a kind of practice-training teaching external screw cutting tool, including knife bar（1）, edge bearing（2）And blade（3）, the blade（3）It is main by Knife bar（1）The pressing plate for being connected（4）By blade（3）By edge bearing（2）It is locked in knife bar（1）On, it is characterised in that：It is described Blade（3）It is the diamond structure of strip, blade（3）Two ends there is the point of a knife that stretches out, blade respectively（3）Often end point of a knife Root there is the chip curling groove of indent（6）.

2. practice-training teaching external screw cutting tool according to claim 1, it is characterised in that：The edge bearing（2）Grown with matching Bar diamond structure blade（3）Insert groove（10）, the edge bearing（2）The blade for being assembled（3）One end point of a knife from edge bearing（2）'s Front end is extended, other end point of a knife is in edge bearing（2）Insert groove（10）It is interior to hide.

3. practice-training teaching external screw cutting tool according to claim 1 or claim 2, it is characterised in that：The blade（3）Point of a knife be Lean forward 60 ° of structures.

4. practice-training teaching external screw cutting tool according to claim 1 or claim 2, it is characterised in that：The blade（3）Chip curling groove （6）Angle is opened up for outer oblique 15 ° of structures.

5. practice-training teaching external screw cutting tool according to claim 4, it is characterised in that：The chip curling groove（6）Upper groove surface Indent gradient angle is 0 °, lower groove face indent angle of inclination is 15 °.

6. practice-training teaching external screw cutting tool according to claim 1 or claim 2, it is characterised in that：The edge bearing（2）With bottom Ramp structure is assemblied in knife bar（1）In anterior edge bearing groove, the knife bar at the edge bearing groove rear portion（1）It is provided with bearing（7）, it is described Bearing（7）Ejection screw is connected with screw thread feeding mode（9）, the ejection screw（9）Front end and edge bearing（2）Rear end face is supported Connect.

7. practice-training teaching external screw cutting tool according to claim 6, it is characterised in that：The edge bearing（2）The inclined-plane of bottom Angle of inclination is 100 °.