CN204747606U

CN204747606U - Path deep hole reverse side expands counter bore cutter

Info

Publication number: CN204747606U
Application number: CN201520367845.4U
Authority: CN
Inventors: 钱晓东; 陶友亭
Original assignee: CHINA ZHONGQI GROUP HANGZHOU ENGINE CO LTD
Current assignee: CHINA ZHONGQI GROUP HANGZHOU ENGINE CO LTD
Priority date: 2015-05-31
Filing date: 2015-05-31
Publication date: 2015-11-11
Anticipated expiration: 2025-05-31

Abstract

The utility model relates to and discloses a path deep hole reverse side expands counter bore cutter, including cutter arbor and blade, its characterized in that the blade groove has been seted up to the front end of cutter arbor, the blade setting be in the blade inslot to use the fix with screw, the diameter of cutter arbor front end be less than the deep hole diameter of waiting to process on the part. The utility model discloses a path deep hole reverse side expands counter bore cutter adorns the cutter arbor on suitable handle of a knife earlier during the processing counter bore, lets the cutter arbor pass the path deep hole of waiting to process the part again, loads onto the blade at last and uses the fix with screw, just can begin to process the counter bore. The utility model discloses directly carry out the processing of reverse side counter bore, need not not mill on by the processing part and interfere the part, guaranteed by the intensity of processing part, rigidity and pleasing to the eye. Furthermore, the utility model discloses simple structure, low in manufacturing cost is honest and clean.

Description

Small diameter and deep hole reverse side falls to expand counterbore cutter

Technical field

The utility model relates to machining tool field, particularly relates to knife bar counterbore manufacture field, and specifically a kind of small diameter and deep hole reverse side falls to expand counterbore cutter.

Background technology

Some part is because its reasons in structure is when processing connecting portion screw counter bore, and drill bit directly cannot be processed counterbore or need prescind part and drill bit interference portion could process counterbore, but processes the rear bulk strength, the rigidity and attractive in appearance that affect part.

With reference to Fig. 1, be a part 4 to be processed shown in figure, the rear end of this part to be processed has the cylindrical member 8 of a φ 80, front end to have φ 55 cylindrical member 9, back end cylindrical parts 8 offer small diameter and deep hole 10, needs the counterbore 5 at the front end of this small diameter and deep hole 10 processing φ 15.But because the cylindrical member 9 of drill bit and front end φ 55 can produce interference, therefore drill bit directly cannot be processed from front end.There is several solution at present: (1) buys extraordinary boring cutter bar and boring blade, and boring machine is processed; (2) be φ 55 cylinder is milled interfere position, drill bit is directly processed.1st kind of method boring cutter bar and blade procurement cycle is longer and cost is high, the 2nd kind of method then affects the bulk strength of part to be processed, rigidity and attractive in appearance.

Summary of the invention

The problems referred to above being prior art and existing to be solved in the utility model, aim to provide a kind of small diameter and deep hole reverse side and fall to expand counterbore cutter, directly carry out the processing of reverse side counterbore, ensure intensity and the rigidity of part to be processed.

For solving the problem, the utility model is by the following technical solutions: small diameter and deep hole reverse side falls to expand counterbore cutter, comprises knife bar and blade, it is characterized in that the front end of described knife bar offers insert groove, described blade is arranged in described insert groove, and is screwed; The diameter of described knife bar front end is less than the deep hole diameter on part to be processed.

Small diameter and deep hole reverse side of the present utility model falls to expand counterbore cutter, is first contained on suitable handle of a knife by knife bar, then allows knife bar pass the small diameter and deep hole of part to be processed, finally load onto blade and be screwed, just can start to process counterbore during processing counterbore.The utility model directly carries out the processing of reverse side counterbore, need not mill interference portion on part to be processed, ensure that the intensity of part to be processed, rigidity and attractive in appearance.Further, the utility model structure is simple, cheap for manufacturing cost.

As further improvement of the utility model, between the deep hole on described knife bar front end and part to be processed, keep 0.2 ~ 0.3mm gap, ensure that knife bar diameter is enough large with the rigidity guaranteeing knife bar and intensity in allowed limits as far as possible.

Improve further as of the present utility model, described insert groove and blade adopt matched in clearance, and control within 0.01mm again.

As further improvement of the utility model, described screw adopts M4 Cross Recess Head Screw, the overall termination through knife bar and blade clamping blade, thus ensures the intensity of clamping.

Accompanying drawing explanation

Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

Fig. 1 is the structural representation of the utility model part to be processed.

Fig. 2 is the structural representation of the utility model cutter.

Fig. 3 is the structural representation of the utility model knife bar.

Fig. 4 is the structural representation of the utility model blade.

Fig. 5 is using state figure of the present utility model.

Detailed description of the invention

With reference to Fig. 1, the rear end of this part 4 to be processed has the cylindrical member 8 of a φ 80, front end to have φ 55 cylindrical member 9, and back end cylindrical parts 8 offer small diameter and deep hole 10, needs the counterbore 5 at the front end of this small diameter and deep hole 10 processing φ 15.Because the cylindrical member 9 of drill bit and front end φ 55 can produce interference, therefore drill bit directly cannot be processed from front end.

With reference to Fig. 2 to Fig. 4, small diameter and deep hole reverse side of the present utility model falls to expand counterbore cutter, and comprise knife bar 1 and blade 2, the front end of described knife bar offers insert groove 7 and screw 6, the front end of the described through knife bar of screw 6, and vertical with insert groove 7.

Described blade 2 is arranged in described insert groove 7, and fixes with screw 3.Blade adopt integral type be grinding into reverse symmetry, make working angles stressed evenly, adopt line cutting technology cut φ 4 hole 11, M4 Cross Recess Head Screw is just passed, thus blade 2 is firmly fixed on cutter head.

Described screw 3 adopts M4 Cross Recess Head Screw, the overall screw 6 through knife bar 1 front end and blade 2 also clamping blade 2, thus ensures the intensity of clamping.

The diameter of described knife bar front end is less than the deep hole diameter on part to be processed, and keeps 0.2 ~ 0.3mm gap.

Described insert groove 7 and blade 2 adopt matched in clearance, and keep gap within 0.01mm.

With reference to Fig. 5, the using method that small diameter and deep hole reverse side of the present utility model falls to expand counterbore cutter is as follows:

First knife bar 1 is contained on suitable handle of a knife, then allows knife bar 1 through the small diameter and deep hole 10 of part to be processed, finally load onto blade 2 and fix with screw 3, just can start from the negative directly to process counterbore 5.

It is understood that above-described embodiment is just to explanation of the present utility model, instead of to restriction of the present utility model, any utility model do not exceeded in the utility model spirit is created, and all falls within protection domain of the present utility model.

Claims

1. small diameter and deep hole reverse side falls to expand counterbore cutter, comprise knife bar (1) and blade (2), it is characterized in that the front end of described knife bar offers insert groove (7), described blade (2) is arranged in described insert groove (7), and fixes with screw (3); The diameter of described knife bar front end is less than the deep hole diameter on part to be processed.

2. small diameter and deep hole reverse side as claimed in claim 1 falls to expand counterbore cutter, it is characterized in that keeping 0.2 ~ 0.3mm gap between the deep hole on described knife bar front end and part to be processed.

3. small diameter and deep hole reverse side as claimed in claim 1 falls to expand counterbore cutter, it is characterized in that described insert groove (7) and blade (2) adopt matched in clearance.

4. small diameter and deep hole reverse side as claimed in claim 3 falls to expand counterbore cutter, it is characterized in that gap between described insert groove (7) and blade (2) is within 0.01mm.

5. small diameter and deep hole reverse side as claimed in claim 1 falls to expand counterbore cutter, it is characterized in that described screw (3) adopts M4 Cross Recess Head Screw, the overall termination through knife bar (1) and blade (2) clamping blade (2).