CN201476746U

CN201476746U - Vertical hole pitch measurement device

Info

Publication number: CN201476746U
Application number: CN2009201903683U
Authority: CN
Inventors: 宋栋梁
Original assignee: NINGBO UNITED TOOL Co Ltd
Current assignee: NINGBO UNITED TOOL Co Ltd
Priority date: 2009-07-31
Filing date: 2009-07-31
Publication date: 2010-05-19
Anticipated expiration: 2019-07-31

Abstract

The utility model discloses a vertical hole pitch measurement device which comprises an expansion sleeve, the outer surface of the expansion sleeve is expanded tightly in a first through hole of a workpiece to be measured, a first mandrel penetrates through the inner surface of the expansion sleeve, the outer surface of the first mandrel is provided with a tapered convex shoulder corresponding to the expansion sleeve, a second mandrel penetrates through a second through hole of the workpiece to be measured, the end part of the second mandrel is provided with a stop-pass gauge, the stop gauge and the pass gauge of the stop-pass gauge are arranged in the same vertical plane. During measurement, the stop-pass gauge only needs to be rotated to quickly detect if the hole pitch of the measured workpieice is within the tolerance range, so the detection is convenient and the detection accuracy is high; besides, the vertical hole pitch measurement device has simple structure and low manufacturing cost.

Description

A kind of measurement mechanism of vertical hole pitch

Technical field

The utility model relates to a kind of measurement mechanism of vertical hole pitch

Background technology

Orthogonal and disjoint hole is arranged on some mechanical component, the hole of worm gear and the hole of worm screw are installed as part, the required distance precision height between the hole, the best way is to use three-coordinates measuring machine, measurement result is accurate.But the environment for use of three-coordinates measuring machine is strict, and tested part must be taken the special-purpose place of three-coordinates measuring machine and measure measuring process complexity, measurement expense height.And three coordinate measuring machine costs an arm and a leg, under the present present situation of China, in enormous quantities use still unrealistic.

At present, a kind of measurement mechanism that is used for the measuring vertical pitch of holes has appearred on the market, as China invention, Granted publication number " CN101403598 ", in 2009.04.08 disclosed " vertical hole pitch measuring tool ", so a kind of device is just disclosed, it is by base plate, positioning core axle, measure mandrel, dial gauge, adjustment frame and bent plate are formed, positioning core axle and bent plate all are installed on the base plate, two dial gauges are installed on the bent plate, adjustment frame is contained on the bent plate with high milled screw, the measurement mandrel that is contained in the adjustment frame hole is the theoretical correct value of tested part corresponding aperture spacing to the distance of positioning core axle, be contained in measurement mandrel in the adjustment frame hole and compress pointer that two dial gauge edge of a knife gauge heads make them zero, the measurement axial line of two dial gauges for by the positioning core axle axial line and with measure the vertical plane symmetry of mandrel axial line, the measurement axis parallel of two dial gauges and with measure the mandrel axial line in a plane, this plane is vertical with the positioning core axle axial line, and the outer side bus that two dial gauge edge of a knife gauge heads contact with the measurement mandrel all measurement axial line with dial gauge is vertical vertical with measurement mandrel axial line; Part is contained on the measurer by positioning core axle, measures mandrel and is contained in the corresponding aperture of part.

The advantage of this pick-up unit is, can detect the numerical value of pitch of holes, but operation or cumbersome, and can not judge pitch of holes rapidly whether within margin tolerance.

The utility model content

The utility model provides a kind of easy to detect at deficiency of the prior art, and low cost of manufacture can be judged the whether measurement mechanism of the vertical hole pitch within margin tolerance of pitch of holes rapidly.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:

A kind of measurement mechanism of vertical hole pitch, comprise expansion set, the outside surface swelling of expansion set is in first through hole of workpiece for measurement, the inside surface of expansion set is equipped with first mandrel, the outside surface of described first mandrel is provided with the convex shoulder that has tapering corresponding to the expansion set place, second mandrel is located in second through hole of workpiece for measurement, and the end of second mandrel is provided with only drift, and no-go gage on the described only drift and drift are on same perpendicular.

Further, described no-go gage and drift are the arrangement of " ten " font.

Further, also be provided with external thread on described first mandrel, be combined with threaded collar on the external thread, the inside surface of described threaded collar is provided with the groove that extends along circumferentially, and the self-locking convex shoulder of expansion set outside surface setting is fastened in this groove.

Further, the outside surface of described expansion set is provided with the swelling convex shoulder.

Beneficial effect: the utility model compared with prior art has following beneficial effect:

The utility model only needs to rotate and ends pitch of holes that drift can detect workpiece for measurement rapidly whether in margin tolerance when detecting, and is easy to detect and accuracy of detection is high, and the utility model is simple in structure in addition, low cost of manufacture.

Description of drawings

Fig. 1 is a structural representation of the present utility model

Fig. 2 be among Fig. 1 A-A to cut-open view

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

Referring to Fig. 1～Fig. 2, the measurement mechanism of vertical hole pitch comprises expansion set 3, described expansion set 3 is the right cylinder of a hollow, the outside surface of cylinder is arranged at intervals with swelling convex shoulder 30, the self-locking convex shoulder 32 that extends along circumferentially, have some grooves on the sidewall of described cylinder vertically, when expansion set 3 inside surfaces are stressed like this, the outside surface of the swelling convex shoulder 30 on the expansion set 3 can swelling on first through hole 110 of workpiece for measurement 11, the inside surface of described expansion set 3 is equipped with first mandrel 1, and the outside surface of described first mandrel 1 is provided with the convex shoulder 10 that has tapering corresponding to expansion set 3 places.

Also be provided with external thread on described first mandrel 1, be combined with threaded collar 9 on the external thread, the inside surface of described threaded collar 9 is provided with the groove 90 that extends along circumferentially, the self-locking convex shoulder 32 of expansion set 3 outside surface settings is fastened in this groove 90, because self-locking convex shoulder 32 is stuck in the groove 90, can prevent that expansion set 3 from moving, make to the utlity model has auto-lock function.

Second mandrel 7 is located in second through hole 112 of workpiece for measurement 11, the end of second mandrel 7 is provided with only drift 5, no-go gage 52 on the described only drift 5 and drift 50 are on same perpendicular, and be " ten " font and arrange, add man-hour, drift 50 is pressed following processing with the size of the no-go gage 52 and first mandrel 1, when drift 50 contacts with first mandrel, 1 outside surface, drift 50 outside surface add that to the distance at second through hole, 112 centers first mandrel, 1 radius is the minimum limit of size between workpiece for measurement 11 two through hole, when no-go gage 52 first mandrels 1 outside surface contacted, the outside surface of no-go gage 52 added that to the distance at second through hole, 112 centers first mandrel, 1 radius is a maximum limit of size between workpiece for measurement 11 two through hole.

During measurement, earlier first mandrel 1 is stretched in first through hole 110 of workpiece 11 to be detected, and the outside surface that makes the swelling convex shoulder 30 on the expansion set 3 is arranged in first through hole 110 of workpiece 11 to be detected, first mandrel 1 continues to move afterwards, make first through hole 110 of expansion set 3 swellings first mandrel 1, so just make first mandrel 1 have identical central axis with first through hole 110, afterwards second mandrel 7 is located in second through hole 112 of workpiece for measurement 11, rotate second mandrel 7, if drift 50 passes through, no-go gage 52 can't pass then qualified, otherwise, if drift 50 can't pass or no-go gage 52 is defective by being, thereby in margin tolerance, operation is very easy for the pitch of holes of judging workpiece for measurement rapidly.

Claims

1. the measurement mechanism of a vertical hole pitch, it is characterized in that, comprise expansion set (3), the outside surface swelling of expansion set (3) is in first through hole (110) of workpiece for measurement (11), the inside surface of expansion set (3) is equipped with first mandrel (1), the outside surface of described first mandrel (1) locates to be provided with the convex shoulder (10) that has tapering corresponding to expansion set (3), second mandrel (7) is located in second through hole (112) of workpiece for measurement, the end of second mandrel (7) is provided with only drift (5), and no-go gage (52) on the described only drift (5) and drift (50) are on same perpendicular.

2. the measurement mechanism of vertical hole pitch as claimed in claim 1 is characterized in that, described no-go gage (52) is " ten " font with drift (50) and arranges.

3. the measurement mechanism of vertical hole pitch as claimed in claim 1, it is characterized in that, also be provided with external thread on described first mandrel (1), be combined with threaded collar (9) on the external thread, the inside surface of described threaded collar (9) is provided with the groove (90) that extends along circumferentially, and the self-locking convex shoulder (32) that expansion set (3) outside surface is provided with is fastened in this groove (90).

4. as the measurement mechanism of the arbitrary described vertical hole pitch of claim 1～3, it is characterized in that the outside surface of described expansion set (3) is provided with swelling convex shoulder (30).