Common-rail injector couple lift is measured cubing
The utility model relates to a kind of measurement cubing, and especially a kind of common-rail injector couple lift is measured cubing, belongs to the Technology of Precision Measurement field.
Electric-controlled co-rail fuel injector parts are many, each other assembly precision require high, couple parts particularly, it cooperatively interacts needs the motion of certain limit lift between part.This lift size can directly affect the fuel injector jet performance, and then has influence on the performance of engine.How to guarantee and detect motion lift after couple parts assemblings, quality and the jet performance of injector assembly had great significance.
Similarly cubing has detection device for measuring depth of oil injector mounting hole (application number: 201020510130.7), cover the degree of depth in the hole that fuel injector is installed for detection of cylinder of diesel engine; A kind of protrusion height of oil sprayer detection control apparatus and method (application number: 200810129938.8), for detection of atomizer stretching out highly in the cylinder cover for diesel engine bottom surface.These patents are mainly for the dimensional measurement of injector assembly when cylinder of diesel engine covers installation, and also are not found for the cubing of dimensional measurement between the common-rail injector inner components.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned weak point, thereby provide a kind of common-rail injector couple lift to measure cubing, can be used in the detection of the motion lift of common-rail injector couple parts, by changing different measuring heads and meter tool, can be applicable between different couple parts, the detection of different accuracy requirement, enlarged usable range, and used efficient and convenient.
The technical scheme that provides according to the utility model, common-rail injector couple lift is measured cubing and is comprised meter tool, cubing seat, spring, air plug gauge, air plug gauge seat, socket head cap screw and C word circle, the gauge head of meter tool stretches in cubing seat circular hole and with spindle nose and contacts, it is characterized in that: air plug gauge comprises spindle nose and axostylus axostyle, spindle nose lower end connection axostylus axostyle.Axostylus axostyle is slidably mounted in the air plug gauge seat, and spindle nose is installed on air plug gauge seat upper end.Cubing seat center is provided with the circular hole of up/down perforation, and air plug gauge seat upper end is threaded connection cubing seat circular hole lower end.Be provided with C word circle between the gauge head of described meter tool and cubing seat, socket head cap screw is threaded connection in cubing seat side.Be provided with the endoporus step in cubing seat circular hole, C word circle is positioned at endoporus step upper end.Spring is arranged in cubing seat circular hole, and the spring upper end contacts with the endoporus step, and the spring lower end contacts with the spindle nose upper surface.
The verticality of described air plug gauge up and down both ends of the surface and axis is less than 0.02mm.
The verticality of described air plug gauge seat up and down both ends of the surface and axis is less than 0.02mm.
Described cubing seat lower surface and axis verticality are less than 0.02mm.
The front end of described socket head cap screw is near C word circle.
Compared with the prior art the utility model has the following advantages:
The utility model is simple, compact and reasonable for structure; Low cost of manufacture; Convenient to use; By changing different air plug gauges and meter tool, can be applicable between different couple parts, the detection of different accuracy requirement, usable range is extensive.
Description of drawings
Fig. 1,2 is the utility model structural representation.
Fig. 3 is AA cut-open view in Fig. 1.
Description of reference numerals: 1-meter tool, 2-cubing seat, 3-spring, 4-air plug gauge, 5-air plug gauge seat, 6-socket head cap screw, 7-C word circle, 8-spindle nose, 9-axostylus axostyle, 10-endoporus step.
Following the utility model is further described in connection with the embodiment in accompanying drawing:
As shown in Fig. 1 ~ 3, the utility model mainly comprises meter tool 1, cubing seat 2, spring 3, air plug gauge 4, air plug gauge seat 5, socket head cap screw 6 and C word circle 7.
Air plug gauge 4 comprises spindle nose 8 and axostylus axostyle 9, spindle nose 8 lower ends connection axostylus axostyles 9.Axostylus axostyle 9 is slidably mounted in air plug gauge seat 5, and spindle nose 8 is installed on air plug gauge seat 5 upper ends.
Cubing seat 2 centers are provided with the circular hole of up/down perforation, and air plug gauge seat 5 upper ends are threaded connection cubing seat 2 circular hole lower ends.The gauge head of meter tool 1 stretches in cubing seat 2 circular holes and with spindle nose 8 and contacts.
Be provided with C word circle 7 between the gauge head of described meter tool 1 and cubing seat 2.Socket head cap screw 6 is threaded connection in cubing seat 2 sides, and the front end of socket head cap screw 6 is near C word circle 7.
Be provided with endoporus step 10 in cubing seat 2 circular holes, C word circle 7 is positioned at endoporus step 10 upper ends.Spring 3 is arranged in cubing seat 2 circular holes, and spring 3 upper ends contact with endoporus step 10, and spring 3 lower ends contact with spindle nose 8 upper surfaces.
The verticality of described air plug gauge 4 and air plug gauge seat both ends of the surface and axis Shang Xia 5 is less than 0.02mm.
Described cubing seat 2 lower surfaces and axis verticality are less than 0.02mm.
The utility model first is placed on air plug gauge seat 5 on standard gauge block when measuring, and makes axostylus axostyle 9 lower surfaces and air plug gauge seat 5 lower surfaces fair, adjusts meter tool 1 pointed zero-bit, the record standard value.Then air plug gauge seat 5 is placed on the part to be measured of couple parts, holding cubing seat 2 compresses downwards, at this moment the reading of meter tool 1 is measured value and standard value sum, should and value deduct standard value, what be part to be measured and adjacent parts coordinates the lift size.
The utility model can by changing air plug gauge 4, air plug gauge seat 5, detect the cooperation lift size of different structure couple parts; By changing meter tool 1, can be applicable to the different measuring accuracy requirement.
The utility model is when measuring the couple parts and coordinate the lift size, and convenient and reliable, accuracy is high, have simultaneously simple in structure, easy to operate, the advantage of low cost of manufacture.