CN217666492U

CN217666492U - Improved machining cutting tool

Info

Publication number: CN217666492U
Application number: CN202221443572.3U
Authority: CN
Inventors: 徐永华; 廖丹; 刘秋雯; 刘神
Original assignee: Fangda Special Steel Technology Co Ltd
Current assignee: Fangda Special Steel Technology Co Ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2022-10-28
Anticipated expiration: 2032-06-10

Abstract

The utility model relates to an improved machining cutting tool, wherein a fixed groove is arranged on one side of the end of a cutter bar, a back chipping is arranged at the inner angle of the fixed groove, the inner edge of the fixed groove is correspondingly matched with the two edges of a rhombic blade, and the rhombic blade is fixed in the fixed groove through a screw; the included angle between one side of the rhombic blade and the center line of the cutter bar is 45 degrees. The utility model discloses reduced the instrument cost, can realize turning round, terminal surface, chamfer, car hole, processing terminal surface or chamfer simultaneously under the not revolving knife rest angle condition in the function, realized location turning, improved the machined part precision, reduced measurement and assistance time, improved work efficiency.

Description

Improved machining cutting tool

Technical Field

The utility model relates to a metal cutting machining instrument, in particular to modified machining cutting tool.

Background

In the metal cutting process, the turning of the excircle, end face, inner bore or chamfer of the machined part is often required. The front end of a common turning tool cutter bar 1 is a 45-degree convex elbow, a fixing groove 2 is arranged on the convex end of the elbow, a rhombic blade 3 is fixedly installed in the fixing groove 2 through a screw 5, and a back chipping 4 is arranged on the rhombic blade 3 at an acute angle of 80 degrees and corresponds to the fixing groove 2. While the diamond-shaped blade 3 is parallel with its one side to the middle line of the tool holder 1 (as shown in fig. 1). During turning, the acute angles of the blades 3 can be only used for turning, and after the acute angles on one outer side are worn, turning needs to be carried out through another obtuse angle of the diamond-shaped blades 3, so that four corners of the blades 3 cannot be fully utilized, the cost of a machining tool is increased, and the full utilization of the functions of turning is not facilitated.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a modified machine adds cutting tool to the function of the current blade of make full use of reduces the instrument cost, improves production efficiency simultaneously.

In order to achieve the above purpose, the utility model adopts the following technical scheme. An improved machining cutting tool is characterized in that a fixing groove is formed in one side of the end of a cutter rod, back chipping is arranged at the inner corner of the fixing groove, the inner edge of the fixing groove is correspondingly matched with two edges of a rhombic blade, and the rhombic blade is fixed in the fixing groove through a screw; the included angle between one side of the rhombic blade and the center line of the cutter bar is 45 degrees.

The utility model discloses compare with original lathe tool cutter, reduced the instrument cost, can realize turning excircle, terminal surface, chamfer, car hole, processing terminal surface or chamfer simultaneously under the not revolving knife rest angle condition in the function, realized location turning, improved the machined part precision, reduced measurement and assistance-time, improve work efficiency.

Drawings

FIG. 1 is a schematic diagram of a conventional turning tool structure;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is an enlarged schematic view of the diamond-shaped blade 3 of the present invention.

In the figure: 1. the cutter comprises a cutter rod, 2 parts of a fixing groove, 3 parts of a diamond-shaped blade, 4 parts of back chipping and 5 parts of a screw.

Detailed Description

The present invention will be further explained with reference to the drawings and examples. Referring to fig. 2 and 3, an improved machining cutting tool is provided, wherein a fixing groove 2 is formed in one side of an end of a tool bar 1, a back chipping part 4 is arranged at an inner angle of the fixing groove 2, the inner edge of the fixing groove 2 is correspondingly matched with two edges of a rhombic blade 3, and the rhombic blade 3 is fixed in the fixing groove 2 through a screw 5; the included angle beta between one side of the rhombic blade 3 and the center line of the cutter bar 1 is 45 degrees.

Example (b): the utility model discloses a rhombus blade 3, its two sets of corresponding angles are 80 and 100 respectively (as shown in fig. 3). One side of the head of the front end of the straight shank cutter bar 1 is protruded, a step-type fixing groove 2 is processed on one side of the protruded part of the end, and a back gouging 4 of a back gouging is processed at the top end of an inner angle in the fixing groove 2 and used for protecting an acute angle of the diamond-shaped blade 3 and preventing the acute angle from being damaged. The inner edge of the fixing groove 2 is correspondingly matched with two edges of the rhombic blade 3, and an included angle beta of 45 degrees is formed between the inner edge and the central line of the cutter bar 1. A screw hole is processed on the step of the fixing groove 2, and the rhombic blade 3 is installed in the fixing groove 2 through a screw 5. Therefore, two angles of the rhombic blade 3 are positioned outside the end of the cutter bar 1 and can be used for turning. When the two corners are worn, the other two corners can be used for turning only by detaching the screw 5 to turn the diamond-shaped blade 3.

The utility model discloses on current car cutter arbor basis, with fixed slot 2 according to 45 milling process of counter-clockwise turning to mill 2 opening contained angles of fixed slot and coincide with 3 obtuse angle apex angles of rhombus blade, with the realization to the make full use of two obtuse angle apex angles of rhombus blade 3, practiced thrift the cost. The relative position of the fixing groove and the rhombic blade is well adjusted, and the acute angle vertex angle is exposed after the utilization of the obtuse angle vertex angle is met, so that the turning of the excircle is realized. The improved cutter bar 1 realizes that the cutter bar 1 provided with the diamond-shaped blade 3 can realize the turning of the end face, the excircle and the inner hole and also can carry out chamfering processing. The available processing tool tip is increased, the utilization rate of the blade is higher, the tool cost is obviously reduced, and meanwhile, the working efficiency is also improved.

Claims

1. An improved machining cutting tool is characterized in that a fixing groove is formed in one side of the end of a cutter rod, back chipping is arranged at the inner angle of the fixing groove, the inner edge of the fixing groove is correspondingly matched with two edges of a rhombic blade, and the rhombic blade is fixed in the fixing groove through a screw; the included angle between one side of the rhombic blade and the center line of the cutter bar is 45 degrees.