CN213614195U

CN213614195U - Combined tool for processing mounting screw hole of cylinder cover of cylinder body at one time

Info

Publication number: CN213614195U
Application number: CN202022562575.6U
Authority: CN
Inventors: 吴伟; 陈琦; 吴广宇
Original assignee: CSSC MES Diesel Co Ltd
Current assignee: CSSC MES Diesel Co Ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-07-06
Anticipated expiration: 2030-11-09

Abstract

The utility model provides a gang tool that is used for disposable processing cylinder block cylinder cap installation screw, this cylinder cap installation screw including the counter bore, its characterized in that: the combined cutter is a combined part and comprises a body, a drilling piece, a boring blade and a chamfering blade; the drilling blade is arranged at the top end part of the body and used for machining the counter bore, the boring blade is arranged in the middle of the outer circumference of the body and used for reaming, and the chamfering blade is arranged at the rear part of the outer circumference of the body and used for chamfering an orifice; the combined cutter can complete the drilling, reaming and chamfering of the cylinder cover mounting screw hole at one time. The utility model discloses have interior cold function, the processing performance is excellent, and the cutter is longe-lived, has obviously improved machining efficiency, has promoted processingquality, has alleviateed intensity of labour, has reduced manufacturing cost.

Description

Combined tool for processing mounting screw hole of cylinder cover of cylinder body at one time

Technical Field

The utility model relates to a processing of marine large-scale low-speed diesel engine, concretely relates to gang tool for disposable processing cylinder block cylinder cap installation screw belongs to machining technical field.

Background

The cylinder block is one of the most important parts of a large low-speed diesel engine for a ship, and has a large processing content and a complex structure. Referring to fig. 1, a cylinder head is connected to the upper plane of the cylinder block 01, a plurality of cylinder head mounting screw holes 02 are distributed on the circumference of each cylinder head mounting hole, and the cylinder head mounting screw holes 02 are the screw holes with the largest diameter on the cylinder block 01.

The cylinder cover mounting screw hole 02 of the cylinder body is a stepped hole with a deep depth, referring to fig. 2, the upper part is a counter bore, the diameter D of the counter bore has tolerance requirements, the wall of the bore has roughness requirements, and the orifice of the counter bore is provided with a chamfer angle a with a required angle; the lower part of the cylinder cover mounting screw hole is a screw hole, the angle B of the bottom of the screw hole is also required, the bottom of the screw hole is required to have roughness, and the specifications of the mounting screw holes of various types of cylinder covers are above M56 at present, so that the processing of the mounting screw holes of the cylinder covers is one of the most critical contents for processing the cylinder blocks.

Five cutters need to be used in the processing of cylinder cap installation screw for a long time, are respectively: firstly, drilling a bottom hole of a threaded hole by using a drill bit; roughly boring a counter bore of a screw hole orifice of a cylinder cover by using a double-headed boring cutter; finely boring the counter bore by using a single boring cutter; chamfering the orifice of the cylinder cover installation screw hole by using a chamfering tool; tapping by a screw tap. During the period, an operator needs to change the tool for many times, set the tool for many times and measure and check for many times, so that the processing time is long, and the cost of the tool is high; because a plurality of cutters are needed, the cutter preparation time is long, the machining of the cylinder cover mounting screw hole of one cylinder block is often required to be more than 16 hours, and the machining of the cylinder cover mounting screw hole of some types is even more than 24 hours, so the machining technology of the cylinder cover mounting screw hole needs to be improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a gang tool for disposable processing cylinder block cylinder cap installation screw, can merge the manufacturing procedure of many cutters into a processing completion, the processing of cylinder cap installation screw is accomplished to high efficiency, reaches the effect that alleviates intensity of labour, improvement machining efficiency, reduction in production cost.

Based on the above-mentioned purpose, the utility model discloses the technical scheme who takes as follows:

the utility model provides a gang tool that is used for disposable processing cylinder block cylinder cap installation screw, this cylinder cap installation screw including the counter bore, its characterized in that: the combined cutter is a combined part and comprises a body, a drilling piece, a boring blade and a chamfering blade; the drilling blade is arranged at the top end part of the body and used for machining the counter bore, the boring blade is arranged in the middle of the outer circumference of the body and used for reaming, and the chamfering blade is arranged at the rear part of the outer circumference of the body and used for chamfering an orifice; the combined cutter can complete the drilling, reaming and chamfering of the cylinder cover mounting screw hole at one time.

Furthermore, the drill bit is made of high-speed steel, and the boring blade and the chamfering blade are made of hard alloy.

Furthermore, the top end portion of the body is provided with a positioning groove for mounting the drill bit and a screw hole for fixing the drill bit, the middle portion of the outer circumference of the body is provided with a positioning groove for mounting the boring blade and a screw hole for fixing the boring blade, and the rear portion of the outer circumference of the body is provided with a positioning groove for mounting the chamfering blade and a screw hole for fixing the chamfering blade.

Furthermore, the drill plate is a standard-angle forming drill plate.

Furthermore, the boring blade and the chamfering blade are the same hard alloy diamond-shaped blade.

Furthermore, an inner-cooling diversion pipeline penetrating through the tail part and the top end part is arranged in the body so as to convey the cutting fluid to the cutting part of the cutter.

Compare with traditional cylinder cap installation screw processing cutter, the utility model has the advantages of it is following:

1. the combined cutting tool has the advantages that the combined cutting tool is provided with the high-speed steel blade and the hard alloy blade, holes can be drilled, and holes and chamfers can be bored, so that the processing content which needs to be processed by a plurality of cutting tools in the past can be finished by one-time processing, compared with the traditional method, the processing efficiency is obviously improved, all cylinder cover mounting screw holes are not more than 5 hours from the beginning to the end of processing, and the processing efficiency is more than 3 times that of the traditional processing method.

2. The processing quality risk caused by repeated tool changing and tool setting is avoided, and the processing quality is improved.

3. The workload of cutter preparation is reduced, operations such as multiple cutter changing, tool setting, measurement, inspection and the like are not needed, multiple measurement is changed into one measurement, and the labor intensity of operators is reduced.

4. The boring blade and the chamfering blade adopt the same hard alloy diamond-shaped blade, 8 cutting edges of the blade can be fully utilized, and the production cost is reduced.

5. The blade is made of hard alloy or high-speed steel with a high-strength coating, the body is provided with an internal cooling flow guide pipeline, and the combined tool has an internal cooling function, so that the combined tool is large in cutting parameter selection range, excellent in machining performance and low in tool loss.

Drawings

Fig. 1 is a schematic view of a cylinder block.

Fig. 2 is an enlarged view of a portion C in fig. 1.

Fig. 3 is a schematic diagram of the present invention.

Fig. 4 is a top view of fig. 3.

Fig. 5 is a left side view of fig. 3.

Fig. 6 is a usage state diagram of the present invention.

In the figure:

a, chamfering, B, an angle, D, a counter bore diameter, 01, a cylinder body, 02, a cylinder cover mounting screw hole, 1, a body, 2, a drilling piece, 3, a boring blade, 4, a chamfering blade and 5, an internal cooling diversion pipeline.

Detailed Description

The utility model discloses a gang tool for disposable processing cylinder block cylinder cap installation screw, which is described in the following, with reference to the attached drawings and embodiments.

Referring to fig. 3, 4 and 5, the combined cutting tool is shown as an assembly including a body 1, a drill plate 2, a boring blade 3 and a chamfering blade 4.

The top end part of the body 1 is provided with a positioning groove for mounting the drill bit 2 and a screw hole for fixing the drill bit 2, the middle part of the outer circumference of the body 1 is provided with a positioning groove for mounting the boring blade 3 and a screw hole for fixing the boring blade 3, and the rear part of the outer circumference of the body 1 is provided with a positioning groove for mounting the chamfering blade 4 and a screw hole for fixing the chamfering blade 4; an inner cooling diversion pipeline 5 penetrating through the tail part and the top end part is arranged in the body 1 so as to convey cutting fluid to the cutting part of the cutter, so that the combined cutter has an inner cooling function.

The drill bit 2 is arranged at the top end part of the body 1 and is used for machining a counter bore of the cylinder cover mounting screw hole 02; the drill bit 2 is a molded drill bit with a standard angle and is provided with a chip dividing groove; the drill bit 2 is made of high-speed steel, and the surface of the drill bit is coated with a high-strength coating.

The boring blade 3 is mounted in the middle of the outer circumference of the body 1 and used for reaming the cylinder cover mounting screw hole 02.

The chamfering blade 4 is installed at the rear part of the outer circumference of the body 1 and is used for chamfering the orifice of the counter bore.

The boring blade 3 and the chamfering blade 4 are made of hard alloy, and adopt the same hard alloy diamond-shaped blade with 8 cutting edges.

The combined cutter can complete the drilling, reaming and chamfering of the cylinder cover mounting screw hole 02 at one time. The verification process is as follows:

a 6-cylinder inline block is processed. Because the combined cutting tool is provided with the high-speed steel blade and the hard alloy blade, the selection of the cutting parameters is difficult, so the high-speed diamond blade 2 at the front part of the combined cutting tool is subjected to high-strength coating treatment, and the adjustable range of the cutting parameters is increased. In the actual processing process, cutting parameters are set between the hard alloy and the high-strength coating high-speed steel, and the concentration of the internal cooling cutting fluid is ensured to be continuously stable, so that the cooling, lubricating and cleaning effects of a cutter during processing are ensured. Verification results show that the combined cutting tool has very stable cutting performance and state, the machining quality is very stable no matter the diameter, the roughness or the chamfer angle of the pre-drilled hole, and the requirements of drawings are completely met. The processing time of all cylinder cover screw holes of one cylinder body is only less than 5 hours, and the processing time is shortened by 8-9 hours compared with the processing time of a plurality of original cutters. Compared with the cylinder block, the same cylinder block processed by the traditional method not only needs a plurality of cutters, but also takes about 16 hours, and the processing period is longer.

The protection scope claimed by the present invention is not limited to the above embodiments, and all equivalent changes and modifications according to the present invention all belong to the scope of the present invention.

Claims

1. The utility model provides a gang tool that is used for disposable processing cylinder block cylinder cap installation screw, this cylinder cap installation screw including the counter bore, its characterized in that: the combined cutter is a combined part and comprises a body, a drilling piece, a boring blade and a chamfering blade; the drilling blade is arranged at the top end part of the body and used for machining the counter bore, the boring blade is arranged in the middle of the outer circumference of the body and used for reaming, and the chamfering blade is arranged at the rear part of the outer circumference of the body and used for chamfering an orifice; the combined cutter can complete the drilling, reaming and chamfering of the cylinder cover mounting screw hole at one time.

2. The gang tool for the disposable processing of the cylinder block-head-mounting screw hole of claim 1, wherein: the drill bit is made of high-speed steel, and the boring blade and the chamfering blade are made of hard alloy.

3. The gang tool for the disposable processing of the cylinder block-head-mounting screw hole of claim 1, wherein: the boring tool is characterized in that the top end of the body is provided with a positioning groove for mounting the drilling blade and a screw hole for fixing the drilling blade, the middle of the outer circumference of the body is provided with a positioning groove for mounting the boring blade and a screw hole for fixing the boring blade, and the rear part of the outer circumference of the body is provided with a positioning groove for mounting the chamfering blade and a screw hole for fixing the chamfering blade.

4. The gang tool for the disposable processing of the cylinder block-head-mounting screw hole of claim 1, wherein: the drill bit is a forming drill bit with a standard angle.

5. The gang tool for the disposable processing of the cylinder block-head-mounting screw hole of claim 1, wherein: the boring blade and the chamfering blade are the same hard alloy diamond-shaped blade.

6. The gang tool for the disposable processing of the cylinder block-head-mounting screw hole of claim 1, wherein: the inner part of the body is provided with an inner cooling diversion pipeline which runs through the tail part and the top end part so as to convey the cutting fluid to the cutting part of the cutter.