CN105841568A - Inside and outside integrated calipers - Google Patents

Abstract

The invention provides a linear size measuring tool, especially inside and outside integrated calipers, and belongs to measuring tools. The calipers include an inside-calipers state and an outside-calipers state; the calipers comprise a pair of caliper arms, the two caliper arms are arranged symmetrically and are hinged to each other in an intersected manner via a rotational pin, the side, of the rotational pin, of each caliper arm includes a clamping segment, and the other side of the caliper arm includes a reading segment; the end portion of each clamping segment is provided with a clamping head, the included angle between the clamping head and the caliper arm in a plane defined by the pair of caliper arms can be adjusted, two clamping heads whose front ends include tips respectively are arranged symmetrically, when the clamping heads incline inwardly, the calipers serve as inside calipers, and when the clamping heads incline outwardly, the calipers serve as outside calipers; the reading segments are provided with a reading device which reflects the lengths of the inside calipers and the outside calipers; the clamping segments are provided with a locking device which locks the pair of caliper arms in certain included angle; and the front ends of the clamping heads form a wedge shape.

Description

Integrated hermaphrodite caliper

Technical field

This technology relates to measurer, it is provided that a kind of linear dimension survey tool, and especially a kind of integrated hermaphrodite caliper, this is one years old Body formula hermaphrodite caliper can use as inside plain calipers when wall-thickness measurement equidimension, can conduct when measuring internal orifice dimension equidimension Bow compass uses, it is possible to directly read measurement data.

Background technology

In prior art when measuring the linear dimension such as the wall thickness of part, internal orifice dimension, groove width, more use inside plain calipers, outer Clamp carry out subsidiary, after corresponding with the size needing measurement for clamp aperture, need to remove clamp, utilize other measurer Measuring the linear dimension of clamp opening, testing result is affected by reviewer's technical ability, it is difficult to ensure that clamp aperture does not changes Become, be the most just difficult to ensure that the precision of measurement.It addition, the common clamp of prior art are single inside plain calipers, bow compass, function list One, it is impossible to reading direct to measurement result, it is impossible to meet and measure requirement direct, effective.

Summary of the invention

The purpose of this technology is to provide a kind of integrated hermaphrodite caliper, and this integrated hermaphrodite caliper is in wall-thickness measurement equidimension Time can use as inside plain calipers, measure internal orifice dimension equidimension time can use as bow compass, it is possible to directly read survey Amount data.

The purpose of this technology is to be achieved through the following technical solutions:

A kind of integrated hermaphrodite caliper, including being symmetrical arranged, by a pair tong arm of rotational pin cross-articulation, each tong arm is turning The side of untie-sell is clamping section, and opposite side is reading section；Be provided with in the plane that a pair tong arm determines in clamping section end with The adjustable dop of tong arm angle, front end is that two dops of tip are symmetrical arranged, and is interior card when dop slopes inwardly, dop It it is wild card time outward-dipping；It is additionally provided with for reflecting interior card length and the reading plotter of wild card length in reading section；In clamping Section is additionally provided with the locking device for a pair tong arm can be locked in certain angle；The front end of dop is tapered.

This technology provides the benefit that:

During use, determine the state of clamp, i.e. inside plain calipers or bow compass according to measurement target, make according to common clamp operating specification Span of jaw is corresponding with measuring target linear dimension, directly reads measurement result.Interior card length is time i.e. dop slopes inwardly, and two Distance between the front end of individual dop, wild card length is time i.e. dop is outward-dipping, the distance between the front end of two dops.

As the improvement to this technology, locking device includes the locking plate offering mounting hole above, moves and is arranged on waist Two lock-screws in shape hole, a lock-screw is linked by screw thread pair with a tong arm.

Above-mentioned improvement, this integrated hermaphrodite caliper unclamps lock-screw and can be adjusted flexibly between a pair tong arm when testing Angle, is i.e. adjusted flexibly span of jaw, when span of jaw is to when coincideing with measurement target linear dimension, and locking lock-screw should State locks, to ensure the stability of measurement result.

As the further improvement to this technology, dop is rotatably arranged in clamping section end by controlling screw, The both sides, rear end of dop are provided with and are angled inwardly into extreme position and outward-dipping spacing to extreme position for limiting dop Boss.

When dop is angled inwardly into extreme position, the angle between dop axis and clamping section axis is 12 °；Dop leans outward Time tiltedly to extreme position, the angle between dop axis and clamping section axis is 25 °.

As the further improvement to this technology, reading plotter includes the trisquare offering circular arc waist row hole above, moves Dynamic two leads being arranged in waist row hole, a lead and a tong arm connect, and are provided with on the two sides of trisquare respectively Corresponding to wild card length and the graduation mark of Nei Ka length.

This improvement, the measurement data that dop is most advanced and sophisticated, according to similar triangle theory, is converted to reading dress by reading plotter Putting scale above, the two is the most corresponding.

As the another kind of improvement to this technology, being further opened with relative groove in two reading section rear ends, groove is used for putting Put the card pin of slide measure.

It is provided with in rear end for placing the groove that slide measure measures.After placing slide measure card pin in groove, Card pin can reliably seal with groove and contact, and for using slide measure to measure offer essence benchmark, is beneficial to ensure certainty of measurement, Easy to use.

Accompanying drawing explanation

Fig. 1 is the structural representation of integrated hermaphrodite caliper.

Fig. 2 is the structural representation of a tong arm.

Fig. 3 be integrated hermaphrodite caliper be interior card time schematic diagram.

Fig. 4 be integrated hermaphrodite caliper be schematic diagram during wild card.

Detailed description of the invention

Below in conjunction with the accompanying drawings, this technology is described further:

Seeing shown in Fig. 1, Fig. 2, a kind of integrated hermaphrodite caliper, including being symmetrical arranged, by a pair of rotational pin 9 cross-articulation Tong arm 10, each tong arm 10 is clamping section 11 in the side of rotational pin 9, and opposite side is reading section 12；Set in clamping section 11 end Being equipped with in the plane that a pair tong arm 10 determines with the tong arm 10 adjustable dop of angle 2, front end is two dops 2 of tip It is symmetrical arranged, is interior card (shown in Figure 3) when dop 2 slopes inwardly, be that wild card (sees Fig. 4 institute when dop 2 is outward-dipping Show)；It is additionally provided with reading plotter in reading section 12.

The thickness of tong arm 10 is certain, and it is 6mm that empirical data chooses the thickness of tong arm 10, for ensureing the rigidity of tong arm 10, with Being boundary at rotational pin 9, the two ends of tong arm 10 are all equi intensity cantilever.

It is additionally provided with the locking device for a pair tong arm can be locked in certain angle in clamping section.Locking device includes Offer the locking plate 16 of mounting hole 15, mobile two lock-screws 4 being arranged in mounting hole 15, a lock-screw above 4 are linked by screw thread pair with a tong arm 10.

For reduce lock-screw 4 move in mounting hole 15 time frictional force, mounting hole 15 in circular arc, the pitch circle of circular arc Radius is the spacing of rotational pin 9 and lock-screw 4.

Dop is rotatably arranged in clamping section end by controlling screw, is respectively arranged with in the both sides, rear end of dop 2 It is angled inwardly into the positive stop lug boss 14 of extreme position and the outward-dipping positive stop lug boss 13 to extreme position for limiting dop 2.

On the one hand the effect controlling screw 3 rotates offer rotating shaft for dop 2, on the other hand also acts as the work of lock-screw With, dop 2 can be locked on extreme position.

When dop 2 slopes inwardly, positive stop lug boss 14 limits the angle between dop 2 axis and clamping section 11 axis as 12 °, this Time, this integrated hermaphrodite caliper is interior card；When dop is outward-dipping, positive stop lug boss 13 limits dop 2 axis and clamping section 11 axle Angle between line is 25 °, and now, this integrated hermaphrodite caliper is wild card.

The front end of dop 2 is wedge shaped or taper.

Reading plotter includes the trisquare 18 offering above circular arc waist row hole 17, mobile is arranged in waist row hole the two of 17 Individual lead 5, a lead 5 is connected with a tong arm 10, is provided with on the two sides of trisquare 18 and corresponds respectively to wild card length Graduation mark 6 with interior card length.

For reducing frictional force when lead 5 moves in mounting hole 17, mounting hole 17 is in circular arc, and the pitch circle of circular arc is partly Footpath is the spacing of rotational pin 9 and lead 5.

Trisquare 18 can be always about the middle separated time symmetry of this integrated hermaphrodite caliper, and two leads are in mounting hole 17 Equidistant movement (state of diagram) time mobile, now the center line of the graduation mark 6 of trisquare 18 is " 0 " graduation mark, and note is read to measure knot Need time really to be added the reading on " 0 " graduation mark both sides.It is of course also possible to only one of which lead moves in mounting hole 17, separately One lead only plays the effect on tong arm 10 that is fixed on by trisquare 18, and now " 0 " graduation mark of trisquare 18 is positioned at lead Motionless side, can visual reading during note reading measurement result.

Owing to this integrated hermaphrodite caliper can have Nei Ka and wild card two states, therefore all it is provided with on the two sides of trisquare 18 Graduation mark is corresponding with Nei Ka and wild card respectively.

Be further opened with relative groove 7 in two reading section 12 rear ends, groove 7 can use slide measure to carry out for placement Card pin (not shown) measured directly.

During use, determine the state of clamp, i.e. inside plain calipers or bow compass according to measurement target, use rule according to common clamp Model makes span of jaw corresponding with measuring target linear dimension, directly reads measurement result on corresponding graduation mark.

This technology provides the benefit that:

Integrated hermaphrodite caliper described in this technology, is the multi-functional clamp that can directly measure part arm thickness, internal diameter.These are many The reading plotter of function clamp can directly read millimeter, it is also possible to reads with slide measure and counts more accurately；Clamping section can It is adjusted to Nei Ka and wild card, clamp position when locking device is for fixing reading with control screw；Reading plotter is to utilize three The trisquare reading plotter that the principle of similitude of dihedral makes, and fluted can be so that vernier caliper reading.

This integrated hermaphrodite caliper, can have Nei Ka and wild card two states, can direct reading, measurement can be met straight Connect, effective requirement, easy to use, simple in construction, processing technology is preferable.

Claims (2)

1. integrated hermaphrodite caliper, including being symmetrical arranged, by a pair tong arm of rotational pin cross-articulation, is characterized in that, each Tong arm is clamping section in the side of rotational pin, and opposite side is reading section；It is provided with in clamping section end a pair tong arm decision With the adjustable dop of tong arm angle in plane, front end is that two dops of tip are symmetrical arranged, and when dop slopes inwardly is Interior card, is wild card when dop is outward-dipping；It is additionally provided with the reading dress for reflecting interior card length and wild card length in reading section Put；It is additionally provided with the locking device for a pair tong arm can be locked in certain angle in clamping section；The front end of dop is tapered.

Integrated hermaphrodite caliper the most according to claim 1, is characterized in that, reading plotter includes offering circular arc above The trisquare in waist row hole, mobile two leads being arranged in waist row hole, a lead and a tong arm connect, at trisquare Two sides is provided with and corresponds respectively to wild card length and the graduation mark of Nei Ka length.

Integrated hermaphrodite caliper according to claim 1, is characterized in that, is further opened with relative recessed in two reading section rear ends Groove, groove is for placing the card pin of slide measure.