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Reaming tool special for valve seat of cylinder cover of multi-cylinder diesel engine

A technology for reaming tools and valve seats, which is used in reamers, manufacturing tools, metal processing equipment, etc., can solve the problems of large coaxiality error of the inner hole of the guide tube, poor surface roughness of the sealing ring, and large shape error, etc. Achieve high hardness, ensure coaxiality requirements, and reduce the surface roughness value

Pending Publication Date: 2021-12-07
江苏恒悦机械有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The tool solves the problems of poor surface roughness of the sealing ring, large shape error and large coaxiality error relative to the inner hole of the conduit, improves the processing pass rate of the multi-cylinder diesel engine cylinder head, saves manpower and processing costs, and is advanced in technology. Practical

Method used

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  • Reaming tool special for valve seat of cylinder cover of multi-cylinder diesel engine
  • Reaming tool special for valve seat of cylinder cover of multi-cylinder diesel engine
  • Reaming tool special for valve seat of cylinder cover of multi-cylinder diesel engine

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention.

[0023] see figure 1 , 2 , 3. The present invention provides the following technical solutions: a multi-cylinder diesel engine cylinder head valve seat special reaming cutter, the cutter includes: cutter body 1, blade 2, valve seat valve 3, conduit inner hole push reamer 4, locking Bolt 5, chip breaker 6, end face cutting edge relief angle 7, radial cutting edge relief angle 8, radial cutting edge rake angle 9, radial cutting edge land width 10, seat ring Verville line reamer relief angle 11 , the cutter body 1 is a cylindrical shape, made of 38CrMoAl alloy modulation steel, the cutter body 1 is provided with a chip breaker 6, and the blade 2 is a machine-clamped cermet blade, which is set on the cutter body 1, and the central axis of the cutter body 1 At an angle of 45 degre...

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Abstract

The invention discloses a reaming tool special for a valve seat of a cylinder cover of a multi-cylinder diesel engine, which adopts mechanically-clamped single-blade cutting to replace boring, so that high shape precision and position precision can be achieved, and the surface roughness value is greatly reduced. A blade is a metal ceramic blade, has very high hardness, wear resistance and red hardness, has good adhesion resistance, chemical stability and low friction coefficient, and can meet the surface quality requirement of a sealing ring belt. A guide pipe inner hole reamer adopts a push reaming mode, the straightness requirement and the surface roughness requirement of a guide pipe inner hole are met, and the coaxiality requirement of the sealing ring belt relative to the guide pipe inner hole is met. The tool solves the problems that the sealing ring belt has poor surface roughness, large shape error and large coaxiality error relative to the guide pipe inner hole, improves the percent of pass of the machined cylinder cover of the multi-cylinder diesel engine, saves labor and machining cost, and is advanced in technology and high in practicability.

Description

technical field [0001] The invention relates to a reaming tool for turning, in particular to a special reaming tool for a cylinder head valve seat of a multi-cylinder diesel engine. Background technique [0002] Valve seat rings of multi-cylinder diesel engines are generally made of nickel-chromium-molybdenum alloy cast iron. Retained austenite), the hardness is 35-40HRC, so the seat ring of this material has the characteristics of high hardness, high strength, good oxidation resistance and wear resistance. The chamfering of the valve seat in the cylinder head is commonly known as the Verle line, which cooperates with the valve to form a sealing ring to ensure that the diesel engine does not leak when it is working. The inventor has published the paper "Special Reaming Tool for Cylinder Head Valve Seats of Multi-cylinder Diesel Engines" in the journal "Metal Processing Cold Processing" in June 2019. The past processing method is to ream the valve seat with a reamer first, ...

Claims

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Application Information

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IPC IPC(8): B23D77/14
CPCB23D77/14
Inventor 孙荣乾丁秋林
Owner 江苏恒悦机械有限公司
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