Flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp

Abstract

The invention relates to the technical field of drilling machining auxiliary equipment, in particular to a flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp. The flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp comprises a base; an angle scale is connected to the base through a sliding block;a slide chute is formed in a sliding base, and the sliding base is locked with the angle scale through bolts; the sliding base is fixedly connected to a supporting post; a pawl is arranged on the supporting post through a fixing shaft; a balance weight is arranged on the pawl; a pawl clamping groove is combined with an index ratchet wheel clamping groove; the index ratchet wheel is fixedly connected to the periphery of a rotary spindle through a feather key; an index ratchet wheel is axially locked with the rotary spindle through a locking nut; a changeable positioning core shaft is connectedinto the rotary spindle; and a workpiece is locked on the changeable positioning core shaft through a holding-down nut. By adopting the flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp, the prominent problems of current oil spraying nozzle production enterprises that clamps are various; management is difficult; and manufacturing cost is high are solved. Product manufacturing cost can be greatly lowered; an on-site management level is enhanced; and meanwhile, the flexible rapid-type-changing combination-type oil spraying nozzle spraying hole precise drilling clamp can be promoted for use in the same industry.

Description

technical field [0001] The invention relates to the technical field of drilling processing auxiliary equipment, in particular to a flexible, fast-changing, combined precision drilling fixture for spray holes of fuel injectors. Background technique [0002] The fuel injection nozzle assembly for marine propulsion and power generation diesel engine and locomotive generator set power is one of the key and precision assembly parts of diesel engine fuel injection system. It is composed of needle valve body and needle valve pairing. There are many series, large differences in specifications and appearance structures, and small batches. Product performance indicators directly affect the fuel consumption rate, emission indicators and reliability of diesel engines. The key elements of the design, the tolerance of the diameter of the nozzle hole is 0.005mm, the tolerance of the angle of the nozzle hole is ±1°, the number of nozzle holes covers 4 to 12, and the diameter of the hole is ...

AI Technical Summary

Problems solved by technology

In the process of product research and development and production, EDM, micro-hole high-speed drilling and other processes can be used for nozzle hole processing. EDM technology can ensure the geometric shape and technical index requirements of the product, but most of the equipment is imported from abroad, and the equipment and electrode wire Expensive, high manufacturing cost, low production efficiency

Using high-speed drilling technology, generally according to the product structure requirements, a set of special drilling fixtures are designed for one product, resulting in various types and specifications of fixtures, difficult fixture management, high fixture maintenance costs and product manufacturing costs.

[0003] The fuel injection nozzle assembly for marine propulsion and power generation diesel engine and locomotive generator set power is one of the key and precision assembly parts of diesel engine fuel injection system. Due to the limitation of industry attributes, there are many types of products, many series, and differences in specifications and appearance structures. Large and small batches, so when the production enterprise adopts high-speed drilling process, according to the product structure, a set of special drilling fixtures are designed for each product. There are many types and specifications of fixtures, the difficulty of fixture management is intensified, and the storage area occupies a large area. , the difficulty of on-site management increases, and the cost of fixture maintenance and product manufacturing is relatively high

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