CN201586760U

CN201586760U - Overlong and overlarge diameter hydraulic cylinder bore drilling cutter

Info

Publication number: CN201586760U
Application number: CN2009202830730U
Authority: CN
Inventors: 杨金南; 沈建明
Original assignee: CHANGZHOU ZHAOBANG HYDRAULIC EQUIPMENT Co Ltd
Current assignee: CHANGZHOU ZHAOBANG HYDRAULIC EQUIPMENT Co Ltd
Priority date: 2009-12-16
Filing date: 2009-12-16
Publication date: 2010-09-22
Anticipated expiration: 2019-12-16

Abstract

The utility model belongs to the field of machining tools, and particularly relates to an overlong and overlarge diameter hydraulic cylinder bore drilling cutter which comprises a cutter head and a cutter bar that are integrally made of V3N ultra-hard high speed steel; the cutter head comprises a main cutting edge, a sleeking edge, a front surface, a main rear surface and an auxiliary rear surface, a front rake angle gamma of the main cutting edge is 10 degrees to 12 degrees, a relief angle alpha is 18 degrees to 20 degrees, an auxiliary relief angle alpha' of the sleeking edge is 20 degrees to 23 degrees, and cutting edge inclination angle gamma of the cutter head is 4 degrees to 5 degrees. Due to the adoption of the ultra-hard high speed steel V3N having good hardness and wear resistance, enough strength and toughness, and better red-hardness and technical parameters such as the front rake angle gamma, the relief angle alpha, the auxiliary relief angle alpha' and the like which are matched with the ultra-hard high speed steel V3N, the cutter can machine and polish by one-pass when machining an overlong and overlarge diameter hydraulic cylinder bore, can not tip and break even under the conditions such as sudden stoppage, sudden power outage and the like, and has good cutting property.

Description

Overlength super-large diameter cylinder port process tool

Technical field

The utility model belongs to the machine tools field, the aperture knife tool of particularly a kind of overlength length and super-large diameter hydraulic cylinder.

Background technology

Along with China's machining industrial expansion, a lot of engineering fields can run into the hole class and the axial workpiece of processing super long length and super-large diameter, the reservoir strobe of hydraulic engineering for example, ship lock piston cylinder etc., the length of its cylinder body is short then more than ten meter when wherein being applied in gate overlength super-large diameter hydraulic cylinder, long then 20～30 meters, add man-hour again because the diameter of cylinder body is a super-large diameter, thereby the hilted broadsword stroke of lathe tool or boring cutter is up to thousands of rice, what traditional lathe tool and boring cutter adopted is high-speed steel or hard alloy steel, though high-speed steel tool after heat treatment has high hardness, wearability, but surpass 400 ℃ of cutting temperatures, cutting ability descends greatly, and its red hardness can not satisfy the requirement of thousands of meters of one-passes; Though the hard alloy steel cutter has good red hardness, even under the condition of high temperature more than 800 ℃, still keep good cutting ability, but its property is crisp, not shock-resistant, toughness is poor, is hit slightly or runs under the situation of unexpected parking, power failure to produce the tipping phenomenon, influences crudy.At present, developed by national material experiment center (Beijing College of Iron and Steel Technology), obtain the super-hard high-speed steel material V3N of state award for inventions, its hardness is up to arriving the HRC:69.5 degree, red hardness can reach more than 800 ℃, and its working (machining) efficiency and cutter life are more than the twice of general high-speed steel tool.In order to give full play to the superiority of this material, in the hole type parts processing of overlength super-large diameter, be used as cutter, must search out best anterior angle γ, the relief angle α of this cutter by experiment, front clearance α ' waits technical parameter, make it in the processing of overlength super-large diameter cylinder port, finish thousands of meters feeds continuously, even under the situation about under emergency circumstances, promptly stop suddenly, having a power failure, tipping not, not cracked, the crudy of assurance work piece.

Summary of the invention

The purpose of this utility model is to provide a kind of adding to have good red hardness man-hour, can connect the continuous one-pass of car band smoothing finishes, even run into the situation of unexpected parking, power failure, tipping not, not cracked and have an overlength super-large diameter cylinder port process tool of good cutting.

The technical scheme that realizes above-mentioned purpose is: a kind of overlength super-large diameter cylinder port process tool, comprise cutter head and knife bar, cutter head is a V3N super-hard high-speed steel material, cutter head has main cutting edge, wiper edges, front, major flank and minor flank, the anterior angle γ of the main cutting edge of described cutter head is 10 °～12 °, relief angle α is 18 °～20 °, and the front clearance α ' of the wiper edges of described cutter head is 20 °～23 °, and the cutting edge inclination λ of described cutter head is 4 °～5 °.

Described cutter head and knife bar are for adopting the monolithic construction of V3N super-hard high-speed steel material.

The beneficial effects of the utility model are: adopt to have the hardness height, wearability is good, enough intensity and toughness are arranged, super-hard high-speed steel material V3N and supporting with it anterior angle γ thereof that the good cutting ability of red hardness etc. is preferably arranged, relief angle α, front clearance α ' waits technical parameter, give full play to the superiority of this material in the processing of overlength super-large diameter hole type parts, thereby this cutter is in the processing of overlength super-large diameter cylinder port, can connect the continuous one-pass of car band smoothing finishes, even run into unexpected parking, situation about having a power failure, tipping not, not cracked and have a good cutting.

Description of drawings

Fig. 1 is a schematic perspective view of the present utility model;

Schematic top plan view when Fig. 2 is the utility model hole machining state;

Fig. 3 is the schematic top plan view of the cutter head 1 of the utility model embodiment;

Fig. 4 is that schematic diagram is looked on the left side of Fig. 3;

Fig. 5 is the A-A generalized section of Fig. 3;

Fig. 6 is the B-B generalized section of Fig. 3.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing does explanation in further detail to the utility model.

As Fig. 1, Fig. 2 with Figure 3 shows that a kind of overlength super-large diameter cylinder port process tool, comprise cutter head 1 and knife bar 2, cutter head 1 and the monolithic construction of knife bar 2 for employing V3N super-hard high-speed steel material, cutter head 1 has main cutting edge 1-1, wiper edges 1-2, front 1-3, major flank 1-4 and minor flank 1-5.

As shown in Figure 4, the cutting edge inclination λ of described cutter head is 4 °～5 °.

As shown in Figure 5, the anterior angle γ of the main cutting edge 1-1 of described cutter head is 10 °～12 °, and relief angle α is 18 °～20 °.

As shown in Figure 6, the front clearance α ' of the wiper edges 1-2 of described cutter head is 20 °～23 °.

Owing to adopted by national material experiment center (Beijing College of Iron and Steel Technology) and developed, obtain the super-hard high-speed steel material V3N of state award for inventions, its hardness is up to the HRC:69.5 degree, red hardness can reach more than 800 ℃, it has the hardness height, wearability is good, enough strength and toughness and good cutting ability such as red hardness are preferably arranged, add man-hour at processing super long super-large diameter cylinder port, select for use anterior angle γ bigger than the anterior angle of common high-speed steel or hard alloy steel cutter, it is sharp to reach cutting edge, cut laborsavingly, chip removal is purpose smoothly; Also the relief angle than common high-speed steel or hard alloy steel cutter is big to select relief angle α for use, can reduce the friction of main back knife face and finished surface; This cutter is not established front cutting edge, the smoothing after directly machining with wiper edges 2, and thick fine finishining one cutter is finished, and has saved process time, has improved operating efficiency; The front clearance α ' of wiper edges 2 also selects bigger angle, prevents that the machined surface after the smoothing is impaired; The cutting edge inclination λ of this cutter be on the occasion of, can make smear metal row to work surface, be suitable for fine finishining.Through groping repeatedly, select above one group of cutting-tool engineering parameter for use than wide-angle, make the cutter head radiating condition good, this cutter is in the processing of overlength super-large diameter cylinder port, can connect the continuous one-pass of car band smoothing finishes, even run into the situation of unexpected parking, power failure, tipping not, not cracked and have a good cutting.

Claims

1. overlength super-large diameter cylinder port process tool, comprise cutter head (1) and knife bar (2), cutter head (1) is a V3N super-hard high-speed steel material, and cutter head (1) has main cutting edge (1-1), wiper edges (1-2), front (1-3), major flank (1-4) and minor flank (1-5), it is characterized in that:

The anterior angle γ of the main cutting edge (1-1) of a, described cutter head (1) is 10 °～12 °, and relief angle α is 18 °～20 °;

The front clearance α ' of the wiper edges (1-2) of b, described cutter head (1) is 20 °～23 °;

The cutting edge inclination λ of c, described cutter head (1) is 4 °～5 °.

2. overlength super-large diameter cylinder port process tool according to claim 1 is characterized in that: described cutter head (1) and the monolithic construction of knife bar (2) for employing V3N super-hard high-speed steel material.