CN213672024U

CN213672024U - Conical surface machining tool for cylinder cover oil sprayer hole

Info

Publication number: CN213672024U
Application number: CN202022381272.4U
Authority: CN
Inventors: 汤伯虎; 钱俊男; 朱慧; 邢永泽
Original assignee: CSSC Marine Power Co Ltd
Current assignee: CSSC Marine Power Zhenjiang Co Ltd
Priority date: 2020-10-23
Filing date: 2020-10-23
Publication date: 2021-07-13
Anticipated expiration: 2030-10-23

Abstract

The utility model discloses a conical surface processing cutter for a cylinder cover oil sprayer hole, which comprises a cutter handle, a cutter rod and a cutter head, wherein one end of the cutter rod is fixed on the cutter handle, and the cutter head is fixed on the other end of the cutter rod; the cutter head comprises a drill bit and two blades, one end of the drill bit is fixed to the middle of the other end of the cutter rod, the two blades are symmetrically fixed to the radial outer side of the other end of the cutter rod, a through axial cooling liquid hole is formed in the cutter rod, and the tail end of the axial cooling liquid hole is divided into four paths to be respectively led to the drill bit and the two blades. The utility model discloses simple structure, it is with low costs, cutter wearing and tearing are little. The cutter head adopts a drill bit to drill through a bottom hole of the oil sprayer hole, the drill bit is used as a guide for machining the conical surface of the oil sprayer hole, the conical surface of the oil sprayer hole is machined through the two symmetrically arranged blades, the whole machining process is stable and reliable, the cutter feeding is fast, the machining efficiency is high, and meanwhile, an included angle between cutting edges of the two blades is matched with a conical surface angle of the oil sprayer hole, so that the requirement of the manufacturing tolerance of the conical surface angle of the oil sprayer hole can be met.

Description

Conical surface machining tool for cylinder cover oil sprayer hole

Technical Field

The utility model relates to a cutting tool, especially a cutter of sprayer hole conical surface on processing low-speed diesel engine cylinder cap belongs to cutting equipment technical field.

Background

The cylinder cover is one of important fixed parts of the marine low-speed diesel engine, the cylinder cover and the cylinder sleeve are fixed on the cylinder body of the marine low-speed diesel engine together through elastic bolts, a plurality of holes for installing an exhaust valve, a starting valve, an oil sprayer, a safety valve and a power indicating valve are formed in the cylinder cover, the oil sprayer is installed on an oil sprayer hole, and the conical surface of the oil sprayer hole are sealed in a line contact mode. The requirement for the processing quality of the injector hole is high, as shown in fig. 1, which is a schematic structural diagram of an injector hole 10 on a cylinder head, not only a conical surface angle β of the injector hole needs to meet a certain manufacturing tolerance, but also the injector hole 10 needs to meet the requirement for coaxiality with a bottom hole 20, if the processing quality of a conical surface 30 of the injector hole 10 cannot meet the design requirement, the conical surface 30 of the injector hole and the conical surface 30 of the injector hole are not well fitted, the sealing performance of the injector hole and the injector hole is directly affected, and the overall performance of a diesel engine is affected. The existing cutter for machining the conical surface 30 of the oil sprayer hole is low in machining efficiency, and the machining quality cannot meet the technical requirements.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a conical surface processing cutter of cylinder head nozzle opening of simple structure, machining efficiency height, processingquality are good.

The utility model discloses a following technical scheme realizes:

a conical surface machining cutter for an oil sprayer hole of a cylinder cover comprises a cutter handle, a cutter bar and a cutter head, wherein one end of the cutter bar is fixed on the cutter handle, and the cutter head is fixed on the other end of the cutter bar; the cutter head comprises a drill bit and two blades, one end of the drill bit is fixed to the middle of the other end of the cutter bar, the two blades are symmetrically fixed to the radial outer side of the other end of the cutter bar, a through axial cooling liquid hole is formed in the cutter bar, and the tail end of the axial cooling liquid hole is divided into four paths to be respectively led to the drill bit and the two blades.

The object of the invention is further achieved by the following technical measures.

According to the conical surface processing cutter for the oil sprayer hole of the cylinder cover, the inner cavity at one end of the cutter rod is internally provided with the shockproof alloy body, the outer circle of the shockproof alloy body is sleeved with the sealing rings, and the axial cooling liquid hole penetrates through the shockproof alloy body.

According to the conical surface processing cutter for the cylinder head fuel injector hole, the included angle alpha between the cutting edges of the two blades is 120 degrees, and is matched with the conical surface angle beta of the cylinder head fuel injector hole to be processed.

According to the conical surface processing cutter for the oil sprayer hole of the cylinder cover, one end of the drill bit is provided with an axial kidney-shaped groove.

According to the conical surface machining tool for the oil sprayer hole of the cylinder cover, the tool handle is a hydraulic tool handle.

The utility model discloses simple structure, it is with low costs, cutter wearing and tearing are little. The cutter head adopts a drill bit to drill through a bottom hole of the oil sprayer hole, the drill bit is used as a guide for machining the conical surface of the oil sprayer hole, the machining of the conical surface of the oil sprayer hole is completed through the two symmetrically arranged blades, the whole machining process is stable and reliable, the cutter feeding is fast, the machining efficiency is high, and meanwhile, an included angle between cutting edges of the two blades is matched with a conical surface angle of the oil sprayer hole, so that the requirement of the manufacturing tolerance of the conical surface angle of the oil sprayer hole can be met, the subsequent conical surface of the oil sprayer and the conical surface of the oil sprayer hole. In addition, set up the alloy body that takes precautions against earthquakes in the cutter arbor inner chamber, and the alloy body excircle that takes precautions against earthquakes is overlapped and is established a plurality of sealing washers, can prevent the cutter arbor vibrations, and the tool bit adopts double knives piece, can guarantee that whole cutter arbor atress is even in the cutting process, avoids the emergence of the sword phenomenon of shaking, has further guaranteed the processingquality in sprayer hole. The cutter adopts an inner cooling structure, so that the cutter can be cooled at any time, and the service life of the cutter is prolonged.

The advantages and features of the invention will be illustrated and explained by the following non-restrictive description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a fuel injector port in a cylinder head;

fig. 2 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 2, the utility model discloses a handle of a knife 1, cutter arbor 2 and tool bit 3, handle of a knife 1 are the hydraulic pressure handle of a knife, and the left end of cutter arbor 2 is fixed on handle of a knife 1 through holding screw 4, is equipped with the alloy body 5 that takes precautions against earthquakes in the left end inner chamber of cutter arbor 2, and a plurality of sealing washers 6 are established to the cover on the excircle of the alloy body 5 that takes precautions against earthquakes, and tool bit 3 is fixed on the right-hand member. The cutter head 3 comprises a drill 31 and two blades 32, an axial kidney-shaped groove 33 is formed in the left end of the drill 31, the extending length of the drill 31 can be adjusted, the left end of the drill 31 is fixed to the middle of the right end of the cutter bar 2 through a screw 34, the two blades 32 are symmetrically fixed to the radial outer side of the right end of the cutter bar 2 through a fastening piece, an included angle alpha between cutting edges of the two blades 32 is 120 degrees, and the included angle alpha is matched with a conical surface angle beta of the cylinder cover hole 10 to be processed. A through axial cooling liquid hole 21 is arranged in the cutter bar 2, the axial cooling liquid hole 21 penetrates through the shockproof alloy body 5, the tail end of the shockproof alloy body is divided into four paths which are respectively communicated with the drill 31 and the two blades 32, wherein two paths are communicated with the drill 31, and the other two paths are respectively communicated with the two blades 32. When the conical surface 30 of the injector hole is machined, the bottom hole 20 is drilled through by the drill 31, then cutting parameters are adjusted, the drill 31 is used as a guide, the conical surface 30 of the injector hole is cut by the two blades 32, a certain machining allowance is reserved, and finally the conical surface 30 of the injector hole is reamed to the required size.

In addition to the above embodiments, the present invention can also have other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope of the present invention.

Claims

1. The conical surface machining cutter for the oil sprayer hole of the cylinder cover is characterized in that: the tool comprises a tool handle, a tool bar and a tool bit, wherein one end of the tool bar is fixed on the tool handle, and the tool bit is fixed on the other end of the tool bar; the cutter head comprises a drill bit and two blades, one end of the drill bit is fixed to the middle of the other end of the cutter bar, the two blades are symmetrically fixed to the radial outer side of the other end of the cutter bar, a through axial cooling liquid hole is formed in the cutter bar, and the tail end of the axial cooling liquid hole is divided into four paths to be respectively led to the drill bit and the two blades.

2. The tool for beveling a fuel injector bore of a cylinder head according to claim 1, wherein: an inner cavity at one end of the cutter rod is internally provided with a shockproof alloy body, the outer circle of the shockproof alloy body is sleeved with a plurality of sealing rings, and the axial cooling liquid hole penetrates through the shockproof alloy body.

3. The tool for beveling a fuel injector bore of a cylinder head according to claim 1, wherein: the included angle alpha between the cutting edges of the two blades is 120 degrees and is matched with the conical surface angle beta of the cylinder cover oil sprayer hole to be processed.

4. The tool for beveling a fuel injector bore of a cylinder head according to claim 1, wherein: one end of the drill bit is provided with an axial kidney-shaped groove.

5. The tool for beveling a fuel injector bore of a cylinder head according to claim 1, wherein: the knife handle is a hydraulic knife handle.