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Device for measuring axial assembling clearance between tappet body component roller wheel and tappet body for fuel injection system of automobile

A fuel injection system and assembly clearance technology, applied in mechanical clearance measurement and other directions, can solve problems such as low production efficiency, inability to meet automatic assembly automatic detection, etc., and achieve the effect of improving product quality, reducing the influence of human factors, and improving detection efficiency.

Inactive Publication Date: 2011-08-10
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The manual measurement method not only has low production efficiency, but also has large uncertainties, and cannot meet the requirements of automatic detection on the automatic assembly line.

Method used

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  • Device for measuring axial assembling clearance between tappet body component roller wheel and tappet body for fuel injection system of automobile
  • Device for measuring axial assembling clearance between tappet body component roller wheel and tappet body for fuel injection system of automobile
  • Device for measuring axial assembling clearance between tappet body component roller wheel and tappet body for fuel injection system of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment one: see figure 1 and figure 2 , the measuring device for the axial assembly clearance between the tappet body assembly roller and the tappet body of the automobile fuel injection system includes a measuring table 30, and a positioning fixture 25 for clamping the tappet body assembly 10 to be tested is installed in the center of the measuring table 30 table, A measuring rod assembly 32 is installed on the right side of the table, and a ejector rod assembly 31 is installed on the left side of the table; in the measuring rod assembly 32, a measuring rod positioning cylinder 18 is pushed to the left through a transmission mechanism, and a knife-edge measuring head is pushed by a measuring rod spring 14 11 Push the tappet roller 10-1 in the axial direction, and drive a digital display dial indicator 16 to measure a distance value as the reference value for this measurement; there is a push rod positioning cylinder 3 in the push rod assembly 31 Move to the right...

Embodiment 2

[0018] Embodiment 2: This embodiment is basically the same as Embodiment 1, and the difference is as follows: the structure of the measuring rod positioning cylinder 18 in the measuring rod assembly 32 pushing a knife-edge measuring head 11 and the digital display dial indicator 16 through the transmission mechanism is : the positioning cylinder 18 is horizontally fixed on a measuring rod mount 20 through a cylinder mounting frame 19, and links to each other with a cylinder connecting rod 17 connected to the piston of the cylinder 18; the cylinder connecting rod 17 is installed on a percentage On the meter mounting frame 15, a limit rod 21 is installed at the bottom of the dial indicator mounting frame 15 to tighten a spring seat 13, and the spring seat 13 is installed on a probe mounting frame 12, and the spring seat 13 is connected to the cylinder A compression spring 14 is installed between the rods 17; the knife-edge probe 11 is fixedly installed on the left end surface of ...

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Abstract

The invention designs a device for measuring an axial assembling clearance between a tappet body component roller wheel and a tappet body for a fuel injection system of an automobile. The structure of the device mainly comprises a measuring bar component and a carrier rod component, wherein the measuring bar component moves leftwards along with a measuring bar positioning cylinder; the tappet body roller wheel is pushed along an axial direction under the action of the spring force of a measuring bar; a first distance value is obtained by using a follow-up digital display centimeter as a reference value of the measurement; the carrier rod component moves rightwards along with a carrier rod positioning cylinder; the tappet body roller wheel is pushed back along the axial direction under theaction of stronger elastic force of a carrier rod spring; a second distance value after the tappet body roller wheel is pushed back is obtained by using a dial indicator; and a difference value between the two distance values serves as the clearance value. The device is used on an automatic production line, and can quickly detect the axial assembling clearance between the tappet body component roller wheel and the tappet body, improve detection efficiency, reduce effects of personal factors in a detection process and improve product quality.

Description

technical field [0001] The device of the present invention is used in the automatic assembly production line of the tappet body assembly (10) in the automobile fuel injection system, and completes the measurement of the axial assembly gap Δ between the tappet body roller (10-1) and the tappet body (10-2) . Background technique [0002] For the measurement of the axial assembly gap between the roller and the cylinder after the tappet assembly is assembled, the manual measurement method was originally used. The manual measurement method not only has low production efficiency, but also has large uncertainties, and cannot meet the requirements of automatic detection on the automatic assembly line. The measuring device is an automatic device for on-line measuring axial assembly clearance. Contents of the invention [0003] The object of the present invention is to provide an automatic measuring device for the axial assembly gap between the tappet assembly roller and the tappe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/14
Inventor 华晓青陈振华陆林海王耀华
Owner SHANGHAI UNIV