CN201517915U

CN201517915U - Tool for detecting oblique water pore on top surface of cylinder block of engine

Info

Publication number: CN201517915U
Application number: CN2009202228500U
Authority: CN
Inventors: 关海域; 杨云祥
Original assignee: BEIJING FOTON ENVIRONMENTAL ENGINE Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-06-30
Anticipated expiration: 2019-09-28

Abstract

The utility model relates to a tool for detecting an oblique water pore on the top surface of a cylinder block of an engine. The tool is provided with a T-shaped detection tool body, wherein the T-shaped detection tool body comprises a cross bar and a vertical bar perpendicular to the cross bar, a cylindrical insertion pin perpendicular to the vertical bar and the cross bar is arranged in the position close to the cross bar on the vertical bar, a cylindrical measuring pin parallel to the insertion pin is arranged in the position far away from the cross bar, an end face of the insertion pin is perpendicular to an axis of the insertion pin, an end face of the measuring pin is an oblique plane, a connection line between the centers of the end faces of the insertion pin and the measuring pin is perpendicular to the end face of the measuring pin.

Description

The oblique water hole of engine cylinder block end face testing tool

Technical field

The utility model relates to a kind of testing tool, the oblique water hole of particularly a kind of engine cylinder block end face testing tool.

Background technology

The cylinder block end face of water-cooled engine is provided with oblique water hole.A kind of engine cylinder-body as shown in Figure 1, 2, the oblique water hole 110 of engine cylinder block 100 end faces between two casing bores 120, tiltedly the inclination angle in water hole, and the cylinder hole between wall thickness, aperture must meet the requirements.As being the cylinder body of 91mm casing bore for diameter, the about 9mm of minimum wall thickness (MINI W.) between adjacent two casing bores, tiltedly the diameter in water hole is 4mm, hole depth 69mm, under very accurate situation, the thickness of 2.75mm is tiltedly arranged between water hole and two casing bores, and technical standard requires the wall thickness 〉=1.5mm between oblique water hole of regulation and two casing bores, and the axis in the oblique water hole of standard and cylinder block end face angle α are 50 degree.Yet rat holing be that positional precision, aperture precision and measure of skewness all are difficult to guarantee, and tiltedly the water hole belongs to deep hole machining in the plane, and length-diameter ratio reaches L/d=69/4=17.25.The general unpredictable and control of the deflection of axially bored line in deep hole machining.After axially bored line deflects into to a certain degree, just begin rapid variation, this moment, the hole linearity was overproof greatly, and workpiece is scrapped, and drill bit damages.When processing oblique water hole, a roughing is only finished in the cylinder hole, and the process redundancy in cylinder hole is bigger, even tiltedly certain deviation takes place the water hole this moment, from then on the cylinder hole outward appearance of operation is found, could find oblique water hole and cylinder hole perforation phenomenon in the time of can only arrive postorder right boring cylinder hole.Therefore tiltedly in the process of water hole, need whether conformance with standard detects to the inclination angle in oblique water hole, measure of skewness, aperture etc.Mainly adopting range estimation, platform to detect and dissect at present checks three kinds of methods that oblique water hole is detected.

Described range estimation (outward appearance detection method) be the operator after boring, observe oblique water hole axial location whether in the centre of two adjacent cylinder hole walls, while close observation in work progress compares the vibration situation of smear metal shape and drilling rod, determines whether cutting tool state is normal.This method has certain limitation and uncertainty.

It is after tiltedly the water hole processes that platform is surveyed the pin detection, cylinder body is placed on the detection platform, cylinder deck is vertical with platform, and the survey pin of diameter of phi 4mm, long 70mm is inserted in the oblique water hole, measures the height of surveying the pin outer end, compare with theoretical level, measure the real offset in oblique water hole, platform is surveyed the pin survey fees and is needed cylinder body is moved up on the monitor station, requires great effort again in the time of not only, and can not in time find to take place the quality problems of skew, have serious hidden danger of quality in cylinder interior.

Dissecting detection is after tiltedly the water hole machines, and with wire cutting machine cylinder body is laterally cut open, observes and measure the actual Working position size in oblique water hole, with the wall thickness in oblique water hole of kind of calliper and cylinder hole, confirms whether the hole is offset.Every production some just need be got one and be dissected, and when dissected production stops, and waits for anatomical results, and operation stops production before and after causing, and can not carry out the processing of cylinder body, directly influences the production task on the same day.Because cylinder body is dissected, cause cylinder body to scrap on the other hand, bring the certain economic loss to factory.

The utility model content

Technical problem to be solved in the utility model is at the above-mentioned deficiency of prior art, and to provide a kind of the needs that cylinder body is dissected, and can intuitively, fast, accurately detect the testing tool at position, the oblique water hole of cylinder block end face, aperture, angle of inclination.

The oblique water hole of engine cylinder block end face provided by the utility model testing tool is realized by following technical scheme:

The oblique water hole of a kind of engine cylinder block end face testing tool, be used for whether conformance with standard of the oblique water hole of detection of engine cylinder block end face, it is characterized in that: be provided with a T type cubing body, described T type cubing body is constituted by cross bar with perpendicular to the montant of described cross bar, on the montant of described T type cubing body, be provided with a cylinder plugs perpendicular to described montant and cross bar near the cross bar position, be provided with a cylindrical survey pin parallel away from the cross bar position with described latch, the end face of described latch and the axis normal of described latch, the end face of described survey pin is a tapered plane, and the line between the end face center of the end face center of described latch and described survey pin is perpendicular to the end face of described survey pin.

The oblique water hole of aforesaid engine cylinder block end face testing tool is stated the end face of surveying pin and the angle of surveying pin axis and is equaled the axis in the oblique water hole of standard and the angle of cylinder deck; The diameter of described latch equals the aperture in the oblique water hole of standard; The diameter of described survey pin equals the aperture in the oblique water hole of standard.

Advantage of the present utility model is: simple in structure small and exquisite, easy to operate, can directly detect inclination angle, oblique water hole, aperture and at the following minimum wall thickness (MINI W.) of end face place at cylinder deck, the oblique wall thickness between water hole and the cylinder hole, the waste of having avoided the dissection cylinder body to cause; But continuous on-line detection does not need cylinder body is moved down from production line, compares original detection method and has improved detection efficiency greatly, has reduced labour intensity.

Description of drawings

Fig. 1 is the cylinder block vertical view, shows the position in oblique water hole.

Fig. 2 is the sectional view of Fig. 1, shows the degree of depth and the angle of inclination in oblique water hole.

Fig. 3 is the structural drawing of the T type cubing body in the testing tool.

Fig. 4 is the structural drawing of the oblique water hole of the utility model engine cylinder block end face testing tool.

Fig. 5 uses the mode synoptic diagram that the utility model detects.

Embodiment

It is shown in Figure 4 to see also Fig. 3, the oblique water hole of a kind of engine cylinder block end face provided by the utility model testing tool, wherein be provided with a T type cubing body, described T type cubing body is constituted by cross bar 1 with perpendicular to the montant 2 of described cross bar 1, on the montant 2 of described T type cubing body, be provided with a cylinder plugs 3 perpendicular to described montant 2 and cross bar 1 near the cross bar position, on the montant 2 of described T type cubing body, be provided with a cylindrical survey pin 4 parallel with described latch 3 away from cross bar 1 position.

The end face 31 of described latch 3 and the axis normal of described latch 3, the end face 41 of described survey pin 4 is a tapered plane, the end face 41 of described survey pin 4 and the angle of the axis of surveying pin, identical with the angle α of standard oblique water hole axis and cylinder deck, and the line between end face 41 centers of end face 31 centers of described latch 3 and described survey pin 4 is perpendicular to the end face 41 of described survey pin 4.

Described latch and the diameter of surveying pin equal the aperture in the oblique water hole of standard detected.

Said structure of the present utility model, the cross section of depths, oblique water hole can be projected cylinder deck, whether qualified by measuring oblique water hole of distance detecting workpiece and the minimum wall thickness (MINI W.) between the cylinder hole sold between the hole of adjacent cylinder with end face, survey pin and workpiece end face compatible degree whether detect angle of inclination, oblique water hole qualified by measuring cubing, whether can inserting oblique water hole smoothly by the cubing latch, to detect oblique water hole diameter qualified.

The mode synoptic diagram that Fig. 5 is to use the utility model testing tool to detect.Before detection, described oblique water hole testing tool can be calibrated with a calibrated bolck earlier, described calibrated bolck 5 is provided with the oblique water hole of the standard of simulating cylinder deck fully, and the groove of simulating distance center line between the two adjacent cylinder hole fully, during calibration, latch 3 is inserted in the oblique water hole of standard on the calibrated bolck 5, and the cross bar 1 of T type cubing body and the end face of calibrated bolck 5 are fitted, detect then whether the end face 41 of surveying pin 4 agrees with the calibrated bolck surface and whether about the groove symmetry.

Latch of the present utility model and survey pin length, diameter and survey pin end face are decided according to the oblique water hole of the standard of tested cylinder body parameter with the angle of survey pin axis, as a kind of engine cylinder-body, the angle α of the axis in its oblique water hole of standard and cylinder deck is 50 °, tiltedly the bottom, water hole is 33 millimeters with the cylinder deck distance, the end face 41 that then requires cubing to survey pin 4 is 50 ° of angles with the axis of surveying pin, consider error, this angular range can be for 50 ° ± 5 '; In order to guarantee that latch 3 can arrive 33 millimeters places below the cylinder deck, requiring latch length is 65 ± 0.1 millimeters, because the end face center of latch and the end face of the end face line of centres of surveying pin perpendicular to the survey pin, can determine to survey pin length thus is 39.372 ± 0.01 millimeters.

During actual detected, latch 3 is inserted the oblique water hole that processes on the cylinder body, the cross bar 1 of T type cubing body and cylinder block end face are fitted,, prove that oblique water hole diameter is qualified if latch can insert oblique water hole smoothly; Whether whether the position of the end face 41 of observation survey pin 4 departs from center line, the departure degree between the two cylinder holes, and survey the pin end face and fit with the cylinder block end face.If tiltedly water hole axis and cylinder deck angle are not equal to 50 °, 4 top end faces 41 are sold in then described survey can not be smooth in cylinder deck, can judge that according to this there is dip deviation in oblique water hole; If tiltedly there is left and right sides deflection in the water hole, 4 top end faces 41 are sold in then described survey will depart from center line between two cylinder holes, have deflection with this position that can judge oblique water hole, and judge according to deflection whether the minimum wall thickness (MINI W.) between oblique water hole and the cylinder hole meets the requirements.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art, in not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.

Claims

1. the oblique water hole of engine cylinder block end face testing tool, be used for whether conformance with standard of the oblique water hole of detection of engine cylinder block end face, it is characterized in that: be provided with a T type cubing body, described T type cubing body is constituted by cross bar with perpendicular to the montant of described cross bar, on the montant of described T type cubing body, be provided with a cylinder plugs perpendicular to described montant and cross bar near the cross bar position, be provided with a cylindrical survey pin parallel away from the cross bar position with described latch, the end face of described latch and the axis normal of described latch, the end face of described survey pin is a tapered plane, and the line between the end face center of the end face center of described latch and described survey pin is perpendicular to the end face of described survey pin.

2. the oblique water hole of engine cylinder block end face according to claim 1 testing tool, it is characterized in that: the angle between the axis of the end face of described survey pin and described survey pin equals the axis in the oblique water hole of standard and the angle of cylinder deck.

3. the oblique water hole of engine cylinder block end face according to claim 1 testing tool, it is characterized in that: the diameter of described latch equals the aperture in the oblique water hole of standard.

4. the oblique water hole of engine cylinder block end face according to claim 1 testing tool, it is characterized in that: the diameter of described survey pin equals the aperture in the oblique water hole of standard.