CN202239850U

CN202239850U - Improved structure of cutting tool

Info

Publication number: CN202239850U
Application number: CN 201120372250
Authority: CN
Inventors: 刘金来; 龚起强
Original assignee: Tianjin No 1 Machine Tool Works
Current assignee: Tianjin No 1 Machine Tool Works
Priority date: 2011-09-28
Filing date: 2011-09-28
Publication date: 2012-05-30
Anticipated expiration: 2021-09-28

Abstract

The utility model relates to an improved structure of a cutting tool, which comprises a cutting head and a handle fixedly connected with the cutting head. The improved structure of the cutting tool is characterized in that the handle is fixedly connected with a handle lengthening part through adhesives, the axiality of the handle lengthening part is the same as the axiality of the cutting head, and the handle lengthening part is provided with an exhaust hole. The utility model has the advantages that: the cutting tool can satisfy processing requirements under special conditions, and the handle length can meet processing dimensional requirements of workpieces and has sufficient rigidity, thereby ensuring the coaxiality of the blade part and the handle part of the cutting tool so as to meet high-precision processing requirements and the original quality of the cutting tool; and the strength of the combination part of the lengthened handle part and the original cutting tool can withstand and meet the requirements of allowable limits of cutting resistance and a lot of production problems can be solved. When the structure is applied in supplementary processing of key slots on the journals of output shafts of servo motors with different specifications, urgent production needs can be satisfied, and the workpiece processing cost can be reduced greatly.

Description

The improvement structure of cutting tool

Technical field

The utility model belongs to the metal cutting processing technique field, particularly relates to a kind of improvement structure of cutting tool.

Background technology

In the metal cutting processing, run into root that the higher-order tread is inboard on workpiece through regular meeting, need the one or more elongated slots of processing.Because the length of standard cutter can't satisfy the above-mentioned elongated slot of processing; Therefore need purchase dedicated tool or on standard cutter with the welding method tool shank that extends, in the production of the many kinds of small lot, make or buy the manufacturing cost that dedicated tool not only can increase considerably workpiece; And need longer cycle; If adopt conventional welding methods then to need corresponding auxiliary equipment, be easy to cause handle of a knife and former tool axis axiality behind the lengthening overproof simultaneously, can not satisfy the requirement on machining accuracy of workpiece; Be difficult to guarantee crudy, and influenced the quality of former cutter.

Summary of the invention

The utility model for solve the technical problem that exists in the known technology provide a kind of simple in structure, reduce manufacturing cost and can guarantee the improvement structure of the cutting tool of workpiece machining accuracy.

The technical scheme that the utility model is taked for the technical problem that exists in the solution known technology is:

The improvement structure of cutting tool, comprise cutter tip and with its fixing handle of a knife, it is characterized in that: said handle of a knife is connected with cutter tip through adhesive and is on the handle of a knife lengthening part of axiality, is shaped on steam vent on the said handle of a knife lengthening part.

The utility model can also adopt following technical scheme:

Said handle of a knife lengthening part is processed for the 45# steel.

Said handle of a knife lengthening part is processed for the 40Cr material.

Advantage and the good effect that the utlity model has are: because the utility model adopts technique scheme; Promptly adopt this cutter not only can satisfy the processing request under the specific condition; Make tool shank length satisfy the processing dimension requirement of workpiece; And having enough rigidity, the axiality of blade and shank that has guaranteed cutter is with the requirement that can satisfy high-precision processing and original quality of cutter; And the intensity of cutter lengthening shank and former cutter junction can bear and satisfy the limit requirement allowable of resistance to cutting, solved a multinomial production difficult problem.As be used for additional processing to keyway on each specification servomotor output shaft neck or the like, and satisfied to produce and be badly in need of, reduced the processing cost of workpiece significantly.

Description of drawings

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

Fig. 2 is the structural representation of the utility model embodiment 2;

Fig. 3 is the utility model user mode figure.

Among the figure: 1, cutter tip; 2, handle of a knife; 3, handle of a knife lengthening part; 4, steam vent; 5, workpiece.

The specific embodiment

For further understanding summary of the invention, characteristics and the effect of the utility model, the following examples of giving an example now, and conjunction with figs. specifies as follows:

See also Fig. 1 and Fig. 3; Embodiment 1, the improvement structure of cutting tool, comprise cutter tip 1 and with its fixing handle of a knife 2; Said handle of a knife 2 is connected with the handle of a knife lengthening part 3 that is axiality with cutter tip through adhesive, is shaped on steam vent 4 on the said handle of a knife lengthening part 3.In the present embodiment, said handle of a knife lengthening part is preferably the 45# steel and processes through modifier treatment; Said handle of a knife lengthening part also adopts the 40Cr material to process through modifier treatment.Said handle of a knife lengthening part is for processing the staight shank structure, and the effective length of said handle of a knife lengthening part is 2-5 a times of former cutting tool handle of a knife effective length.

See also Fig. 2 and Fig. 3; Embodiment 2, the improvement structure of cutting tool, comprise cutter tip 1 and with its fixing handle of a knife 2; Said handle of a knife 2 is connected with the handle of a knife lengthening part 3 that is axiality with cutter tip through adhesive, is shaped on steam vent 4 on the said handle of a knife lengthening part 3.In the present embodiment, said handle of a knife lengthening part is preferably the 45# steel and processes through modifier treatment; Said handle of a knife lengthening part also adopts the 40Cr material to process through modifier treatment.Said handle of a knife lengthening part is for processing the Morse taper shank structure, and the effective length of said handle of a knife lengthening part is 2-5 a times of former cutting tool handle of a knife effective length.

Press the mounting means of cutting tool on lathe, the handle of a knife lengthening part can be made into staight shank or Morse taper shank.According to the former tool shank size that needs spreading; Hole in the bonding usefulness of the end of handle of a knife lengthening part car system with certain depth; Guarantee the Kong Yuqi outer circles, and get out steam vent, obtain enough bonding forces to guarantee smooth exhaust in the appropriate location of handle of a knife lengthening part.As adhesive, before cutter head and handle of a knife lengthening part are bonding, use acetone with powerful anaerobic adhesive, remove greasy dirt.(preferably satisfying 24 hours) uses after waiting to be cured to maximum combined intensity.Utilize the effective length increasing bonding surface of former handle of a knife long-pending, to obtain maximum combined power as far as possible.

Claims

1. the improvement structure of a cutting tool, comprise cutter tip and with its fixing handle of a knife, it is characterized in that: said handle of a knife is connected with the handle of a knife lengthening part that is axiality with cutter tip through adhesive, is shaped on steam vent on the said handle of a knife lengthening part.

2. the improvement structure of cutting tool according to claim 1, it is characterized in that: said handle of a knife lengthening part is processed for the 45# steel.

3. the improvement structure of cutting tool according to claim 1, it is characterized in that: said handle of a knife lengthening part is that 40Cr processes.