CN201215469Y

CN201215469Y - Central distance measuring mechanism

Info

Publication number: CN201215469Y
Application number: CNU200820040063XU
Authority: CN
Inventors: 吴群新; 张磊; 靳伟强
Original assignee: WUXI FRIEDRICH PRECISION MACHINERY CO Ltd
Current assignee: WUXI FRIEDRICH PRECISION MACHINERY CO Ltd
Priority date: 2008-06-25
Filing date: 2008-06-25
Publication date: 2009-04-01
Anticipated expiration: 2018-06-25

Abstract

The utility model relates to a mechanism for measuring the center distance of two holes, which is characterized in that a first guide sleeve is arranged in the hole at one end of a bottom plate and is provided with a mounting inner hole, a first measuring pin is plugged in the lower end of the mounting inner hole via a sliding type, a return spring is arranged in the inner hole between the first measuring pin and a plug screen, the another end of the bottom plate is provided with a chute along length, a cover plate covering the chute is arranged at the upper end face of the bottom plate, a guide rail is arranged on the cover plate, a slider is connected with the guide rail via a sliding type, which lower end is connected with a second guide sleeve inserted into the chute, the second guide sleeve is provided with a mounting inner hole which lower end is plugged with a second measuring pin via a sliding type, a return spring is arranged between the second measuring pin and the slider, and the bottom plate is provided with a measuring head abut against the outer wall of the second guide sleeve. The utility model has the advantages that mechanism has simple structure, can quickly position the center of two holes and can improve positioning accuracy.

Description

Center distance measurement mechanism

Technical field

The utility model relates to a kind of mechanism of two hole center distance measurements, belongs to measure the verifying attachment technical field.

Background technology

At present, measuring two hole centre distance normally measures by slide calliper rule and three-coordinates measuring machine.Kind of calliper is roughly to determine two distance between borehole sizes by range estimation, and this is certain to cause, and repeatable accuracy is poor when measuring, measurement data is inaccurate, is not suitable for the measurement of the precision of having relatively high expectations; Though and three-coordinate measuring method can be measured two hole centre distance comparatively accurately, complicated operation, elapsed time are very long, are not suitable for the checkout procedure that batch workpiece is produced.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of measuring accuracy height, simple to operate, center distance measurement mechanism that efficiency of measurement is high are provided.

The technical scheme that provides according to the utility model, described center distance measurement mechanism, comprise base plate, feature is: be provided with first guide pin bushing in an end hole of base plate, first guide pin bushing is provided with the installation endoporus, the plug screw that spins in the upper end that endoporus is installed, and the lower end sliding plug of described installation endoporus has first to measure shank, first measures the shank bottom is inverted round platform or coniform and stretch out the base plate lower surface, is provided with back-moving spring in first endoporus of measuring between shank and the plug screw; One end of base plate offers the chute along its length direction, be provided with the cover plate that covers chute in the base plate upper surface, cover plate is provided with guide rail, slidely connect slide block on the guide rail, the slide block lower end connects second guide pin bushing that stretches in the chute, second guide pin bushing is provided with the installation endoporus, the lower end sliding plug that endoporus is installed has second to measure shank, second measures the shank bottom is inverted round platform or coniform and stretch out the base plate lower surface, between the second measurement shank and slide block, be provided with back-moving spring, on base plate, be provided with the measuring head that is against the second guide pin bushing outside wall surface.

Offer pilot hole on the described measurement shank, putting on the shelf at base plate is provided with the guide pole that stretches in the pilot hole.

Described base plate two ends bottom face is respectively equipped with second reference block and first reference block, and stretch out in the datum hole of second reference block first bottom of measuring shank, and stretch out in the datum hole of first reference block second bottom of measuring shank.Described base plate upper surface is provided with handle.

The utility model is simple, compact and reasonable for structure; The center in two holes can be located fast, and bearing accuracy can be improved; Can make checkout equipment can check more high-grade size; Measure easyly, quick, can when guaranteeing measuring accuracy, increase work efficiency greatly.

Description of drawings

Fig. 1 is an one-piece construction synoptic diagram of the present utility model.

Fig. 2 is A-A cut-open view of Fig. 1.

Embodiment

The utility model is described in further detail below in conjunction with concrete drawings and Examples.

As Fig. 1～shown in Figure 2: the utility model is mainly measured shank 4, guide pole 5, endoporus 6 is installed, pilot hole 7, handle 8, base plate 9, first reference block 10, chute 11, endoporus 12, measuring head 13, datum hole 14, cover plate 15, guide rail 16, datum hole 17, handle 18, slide block 19, back-moving spring 20, second are installed are measured shank 21, guide pole 22, second guide pin bushing 23, pilot hole 24, second reference block 25 etc. and form by first guide pin bushing 1, plug screw 2, back-moving spring 3, first.

Center distance measurement of the present utility model mechanism, comprise base plate 9, hole internal fixation in an end of base plate 9 is provided with first guide pin bushing 1, first guide pin bushing 1 is provided with installs endoporus 6, plug screw 2 spins in the upper end of this installation endoporus 6, the lower end sliding plug of this installation endoporus 6 has first to measure shank 4, the first and measure shanks 4 bottoms and be inverted round platform or coniform and stretch out base plate 9 lower surfaces, is provided with back-moving spring 3 in first endoporus of measuring between shank 4 and the plug screw 2; The other end of base plate 9 offers the chute 11 along its length direction, be provided with the cover plate 15 that covers chute 11 in base plate 9 upper surfaces, cover plate 15 is provided with guide rail 16, slidely connect slide block 19 on the guide rail 16, slide block 19 lower ends connect second guide pin bushing 23 that stretches in the chute 11, second guide pin bushing 23 is provided with installs endoporus 12, the lower end sliding plug that endoporus 12 is installed has second to measure shank 21, second measures shank 21 bottoms is inverted round platform or coniform and stretch out base plate 9 lower surfaces, between the second measurement shank 21 and slide block 19, be provided with back-moving spring 20, on base plate 9, be provided with the measuring head 13 that is against second guide pin bushing, 23 outside wall surface.

Offer pilot hole 7 on the first measurement shank 4, putting on the shelf at base plate 9 is provided with the guide pole 5 that stretches in the pilot hole 7.Offer pilot hole 24 on the second measurement shank 21, putting on the shelf at base plate 9 is provided with the guide pole 22 that stretches in the pilot hole 24.Stretch out in the datum hole 14 of second reference block 25 bottom that is provided with second reference block 25 and first reference block, 10, the first measurement shanks 4 at base plate 9 two ends bottom faces, and stretch out in the datum hole 17 of reference block 10 second bottom of measuring shank 21.Be provided with handle 8 and handle 18 in base plate 9 upper surfaces.

As shown in Figure 1, it is clearance fit that first guide pin bushing 1 and first is measured shank 4, and tolerance clearance is less, and purpose is that the radial missing that shank 4 produces when mobile is measured in control first in first guide pin bushing 1; The cooperation of second guide pin bushing 23 and the second measurement shank 21 is the same; The pretightning force of back-moving spring 3 and back-moving spring 20 is wanted and can smoothly register pin be bound to extreme position, when measuring register pin is had certain elastic force, register pin is found can be stuck in the aperture behind the center, hole can not break away from easily; The purpose of mounting knob 8, handle 18 is to make things convenient for personnel's both hands to pick up cubing to operate; The effect of guide pole 5, guide pole 22 is that the moving range that shank 4 and second is measured shank 21 is measured in control first; Comprise some rollers between slide block 19 and the guide rail 16, after guide rail 16 and cover plate 15 were connected and fixed, slide block 19 can move flexibly along the roller direction; Hold out against with screw between guide rail 16 and the slide block 19, slide block 19 is not relatively moved in vertical direction.

The principle of work of the present utility model and the course of work:

Guide pole 5 is to be used for locating first guide pin bushing 1 and first to measure shank 4, and back-moving spring 3 fit adjustment allow first to measure shank 4 and eject to the outside, are subjected to the inwall reacting force and inwardly withdrawal when cooperating the location with measured hole.Because the existence of spring force, first measures shank 4 has an acting force to tested hole wall all the time, thereby makes the first measurement shank, 4 taperings be adjacent to the hole wall edge all the time, has therefore guaranteed the accurate positioning at center, hole.Straight pin 22 is to be used for locating second guide pin bushing 23 and second to measure shank 21, and back-moving spring 20 fit adjustment allow second to measure shank 21 and eject to the outside.

In work reference block 10 is placed on the calibrating device reference field, first measures shank 4 inserts a hole, when first measure under the screen resilience effect of shank 4 at back-moving spring 3 can not be again in the hole before so that when being stuck in the position, aperture, represent that this hole has been located to finish.Suitably regulate mobile cover plate 15 and make second to measure shank 21 another holes of insertion, block the location equally, two hole centre distance variable quantities pass by measuring head 13, with the numerical value zeroing that shows.

After finish in school zero, just can measure workpiece with same procedure, the numerical value that surveying instrument shows is exactly the variable quantity of the relative and calibrating device of centre distance.

Claims

1, a kind of center distance measurement mechanism, comprise base plate (9), it is characterized in that: in an end hole of base plate (9), be provided with first guide pin bushing (1), first guide pin bushing (1) is provided with installs endoporus (6), plug screw (2) spins in the upper end that endoporus (6) is installed, the lower end sliding plug of described installation endoporus (6) has first to measure shank (4), first measures shank (4) bottom is inverted round platform or coniform and stretch out base plate (9) lower surface, is provided with back-moving spring (3) in first endoporus of measuring between shank (4) and the plug screw (2); One end of base plate (9) offers the chute (11) along its length direction, be provided with the cover plate (15) that covers chute (11) in base plate (9) upper surface, cover plate (15) is provided with guide rail (16), slidely connect slide block (19) on the guide rail (16), slide block (19) lower end connects second guide pin bushing (23) that stretches in the chute (11), second guide pin bushing (23) is provided with installs endoporus (12), the lower end sliding plug that endoporus (12) is installed has second to measure shank (21), second measures shank (21) bottom is inverted round platform or coniform and stretch out base plate (9) lower surface, between the second measurement shank (21) and slide block (19), be provided with back-moving spring (20), on base plate (9), be provided with the measuring head (13) that is against second guide pin bushing (23) outside wall surface.

2, center distance measurement as claimed in claim 1 mechanism is characterized in that: offer pilot hole (7) measuring on the shank (4), putting on the shelf at base plate (9) is provided with the guide pole (5) that stretches in the pilot hole (7).

3, center distance measurement as claimed in claim 1 mechanism is characterized in that: offer pilot hole (24) measuring on the shank (21), putting on the shelf at base plate (9) is provided with the guide pole that stretches in the pilot hole (24)

(22)。

4, center distance measurement as claimed in claim 1 mechanism, it is characterized in that: be respectively equipped with second reference block (25) and first reference block (10) at base plate (9) two ends bottom face, stretch out in the datum hole (14) of second reference block (25) first bottom of measuring shank (4), and stretch out in the datum hole (17) of first reference block (10) second bottom of measuring shank (21).

5, center distance measurement as claimed in claim 1 mechanism is characterized in that: be provided with handle in base plate (9) upper surface.