CN201555549U

CN201555549U - Installation angle detection fixture for timing gear of gasoline engine crankshaft

Info

Publication number: CN201555549U
Application number: CN2009202938092U
Authority: CN
Inventors: 王安庆; 蒋瑞元; 刘星庆; 李家洪; 武崇东
Original assignee: CHONGQING MEIXIN CRANKSHAFT MANUFACTURING Co Ltd
Current assignee: CHONGQING MEIXIN YINGSHEN MACHINERY CO., LTD.
Priority date: 2009-12-15
Filing date: 2009-12-15
Publication date: 2010-08-18
Anticipated expiration: 2019-12-15

Abstract

The utility model relates to an installation angle detection fixture for a timing gear of a gasoline engine crankshaft, which is mainly formed by a seat, a V-shaped block, a pin a pin seat, a pin guide sleeve and a standard height block. When using the fixture for detecting installation angle error of the timing gear in the gasoline engine crankshaft, precise installation angle error values can be obtained, and the fixture has the advantages of simple structure, and convenient and time-saving operation.

Description

Gasoline engine crank time gear setting angle cubing

Technical field

The utility model relates to a kind of cubing, especially for the gasoline engine crank time gear setting angle cubing that detects the setting angle error of time gear on bent axle on the gasoline engine crank.

Background technology

Gasoline engine crank is made up of main shaft 7, crank 11 and bent neck 9, as shown in Figure 6, wherein on a main shaft 7 bearing 10 is installed, is mounted with time gear 8 on the another main shaft 7, time gear 8 are installed on the bent axle, and have the relative position requirement in a circumferential direction between the crank spindle 7.

In the production run of reality, after time gear 8 are press fit on the bent axle, its the position on bent axle and the bent axle of standard generally all have certain deviation, be that time gear 8 exist the setting angle error on bent axle, as long as this setting angle error is in allowed limits, and then this bent axle still is specification product.

At present, be used for detecting the cubing complex structure of the setting angle error of gasoline engine crank time gear 8, detecting operation is loaded down with trivial details, and testing result is not too reliable, occur sometimes qualified bent axle mistake as substandard product, perhaps with the situation of underproof bent axle mistake as specification product.

The utility model content

The purpose of this utility model provides a kind of gasoline engine crank time gear setting angle cubing simple in structure, matches with dial gauge, can accurately detect the setting angle error of the time gear in the bent axle on bent axle.

Gasoline engine crank time gear setting angle cubing described in the utility model, mainly form by base, vee-block, latch, plug housing, latch guide pin bushing and calibrated altitude piece, wherein vee-block is two, and it is fixed on the base, and the axis of the V-shaped groove of two vee-blocks is located along the same line; Plug housing is fixed on the base, the latch guide pin bushing is installed on the plug housing and the plug housing interference fit, latch is arranged in latch guide pin bushing and latch guide pin bushing clearance fit, and it is vertical with base, when gasoline engine crank is positioned on the vee-block by its main shaft, and the time gear end face of bent axle is when wherein a vee-block medial surface contacts, latch be positioned at these time gear directly over; The calibrated altitude piece is vertically fixed on the base, it highly is: when gasoline engine crank is positioned on the vee-block by its main shaft, the time gear end face of bent axle contacts with vee-block medial surface wherein, and when the latch lower end is inserted in the teeth groove at place, timing marks place on the time gear and to be contacted with the flank of tooth, the bent neck surface of gasoline engine crank and the ultimate range between the base.

The shape of latch lower end should make the latch lower end insert in the teeth groove, and can stablize with the flank of tooth that is positioned at the latch both sides and contact.

The detecting operation of time gear setting angle error is as follows:

At first promote dial gauge, the dial gauge gauge head is contacted with calibrated altitude piece upper surface, dial gauge obtains a reading.Latch is mentioned, to intend detecting gasoline engine crank again is positioned on the vee-block by its main shaft, and the time gear end face of bent axle contacts with vee-block medial surface wherein, turning crankshaft, the teeth groove at place, timing marks place on the time gear is positioned under the latch, put down latch then, the latch lower end is inserted in the teeth groove at place, timing marks place, this moment, time gear may produce minor rotation, after treating that the latch lower end contacts with the teeth groove of time gear is stable, promote dial gauge once more, the bent neck end face of dial gauge gauge head and bent axle is contacted, find full-scale reading, the difference of this full-scale reading and the dial gauge reading first time is carried out certain conversion, can draw the setting angle error of time gear.

Utilize cubing described in the utility model to cooperate with dial gauge, setting angle error to the time gear in the gasoline engine crank detects, can draw accurate setting angle error amount, stopped the specification product mistake as substandard product, and with of the generation of substandard product mistake as the situation of specification product, and this cubing is simple in structure, easy to operate saving time.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is described in further detail.

Fig. 1 looks synoptic diagram for the master of gasoline engine crank time gear setting angle cubing described in the utility model;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the right view of Fig. 1;

Master when Fig. 4 detects on this cubing for gasoline engine crank is placed on looks synoptic diagram;

Fig. 5 is the right view of Fig. 4;

Fig. 6 is the structural representation of gasoline engine crank.

Embodiment

Extremely shown in Figure 6 as Fig. 1, this gasoline engine crank time gear setting angle cubing mainly is made up of base 6, vee-block 5, latch 1, plug housing 2, latch guide pin bushing 3 and calibrated altitude piece 4, wherein vee-block 5 is two, it is fixed on the base 6 by bolt and pin, and the axis of the V-shaped groove of two vee-blocks 5 is located along the same line.

Plug housing 2 is fixed on the base 6 by bolt and pin, latch guide pin bushing 3 is installed on the plug housing 2 and plug housing 2 interference fit, latch 1 is arranged in latch guide pin bushing 3 and latch guide pin bushing 3 clearance fit, can move vertically with respect to latch guide pin bushing 3, and latch 1 is vertical with base 6, when gasoline engine crank is positioned on the vee-block 5 by its main shaft 7, and time gear 8 end faces of bent axle are when wherein vee-block 5 medial surfaces contact, latch 1 be positioned at these time gear 8 directly over.

Calibrated altitude piece 4 is vertically fixed on the base 6, it highly is: when gasoline engine crank is positioned on the vee-block 5 by its main shaft 7, time gear 8 end faces of bent axle contact with vee-block 5 medial surfaces wherein, and when latch 1 lower end is inserted in the teeth groove at place, timing marks place on the time gear 8 and to be contacted with the flank of tooth, the ultimate range between the surperficial and base 6 of the bent neck of gasoline engine crank 9.

Claims

1. gasoline engine crank time gear setting angle cubing, it is characterized in that: mainly form by base (6), vee-block (5), latch (1), plug housing (2), latch guide pin bushing (3) and calibrated altitude piece (4), wherein vee-block is two, it is fixed on the base, and the axis of the V-shaped groove of two vee-blocks is located along the same line; Plug housing is fixed on the base, the latch guide pin bushing is installed on the plug housing and the plug housing interference fit, latch is arranged in latch guide pin bushing and latch guide pin bushing clearance fit, and it is vertical with base, when gasoline engine crank is positioned on the vee-block by its main shaft (7), and the time gear of bent axle (8) end face is when wherein a vee-block medial surface contacts, latch be positioned at these time gear directly over; The calibrated altitude piece is vertically fixed on the base, it highly is: when gasoline engine crank is positioned on the vee-block by its main shaft, the time gear end face of bent axle contacts with vee-block medial surface wherein, and when the latch lower end is inserted in the teeth groove at place, timing marks place on the time gear and to be contacted with the flank of tooth, bent neck (9) surface of gasoline engine crank and the ultimate range between the base.