CN106767296A - A kind of pitch diameter of external thread measurement apparatus - Google Patents
A kind of pitch diameter of external thread measurement apparatus Download PDFInfo
- Publication number
- CN106767296A CN106767296A CN201611178934.XA CN201611178934A CN106767296A CN 106767296 A CN106767296 A CN 106767296A CN 201611178934 A CN201611178934 A CN 201611178934A CN 106767296 A CN106767296 A CN 106767296A
- Authority
- CN
- China
- Prior art keywords
- measurement
- pawl
- convex
- teeth groove
- pitch diameter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
Abstract
The present invention relates to measuring instrument field, more particularly to a kind of pitch diameter of external thread measurement apparatus.Pitch diameter of external thread measurement apparatus include measuring scale and convex,Recessed measurement head,Recessed measurement head includes measurement headstock,Measurement headstock is provided with first,Second slides pawl,First,Second cunning pawl cooperates composition for clamping the measurement teeth groove of thread,Measurement teeth groove is included for clamping the first of thread,Second clamping face,First clamping face is arranged on the first cunning pawl,Second clamping face is arranged on the second cunning pawl,First,Second cunning pawl is oriented to measurement headstock and is slidably matched,The big I of measurement teeth groove is by sliding first,Second slides pawl regulation,Convex measurement head is provided with the measurement tooth being arranged in pairs with described measurement teeth groove for being adapted to screw thread teeth groove,Pitch diameter of external thread measurement apparatus of the invention can adjust the size of measurement teeth groove,With the screw thread suitable for different pitch,Measurement head need to be changed when solving the problems, such as that current pitch diameter of external thread measurement apparatus measure the external screw thread of different pitch.
Description
Technical field
The present invention relates to measuring instrument field, more particularly to a kind of pitch diameter of external thread measurement apparatus.
Background technology
The measurement of existing pitch diameter of external thread generally uses plug thread gauge, and the detection of existing plug thread gauge simple pitch diameter is adopted
Three-needle measuring method is used, because the three-needle measuring instrument precision used by three-needle measuring method is very high, manufacture difficulty is big, price is high and weares and teares
After cannot repair, and all influence simple pitch diameters such as pin footpath deviation, the pitch of measured piece, half angular displacement and lead angle
Measurement result, if eliminating these influences, it is necessary to first measure the deviation of items and cumbersome calculating, workload is big, measurement effect
Rate is low, in order to solve the above problems, the Chinese utility model patent that notification number is CN2248334Y, the day for announcing is 1997.02.26
A kind of central diameter measuring appliance of combined external thread pitch diameter comparator is disclosed, is coordinated by recessed gauge head and convex gauge head and realized to screw thread
The measurement of external diameter, its concave gauge head and convex gauge head according in codes and standards pitch specify to make in pairs, one group of concave, convex gauge head
The external screw thread of multigroup different pitch can not be applicable, needs to change different recessed gauge head and convex surveys during the external screw thread for measuring different pitch
Head, testing efficiency is low.
The content of the invention
It is an object of the invention to provide a kind of pitch diameter of external thread measurement apparatus, dress is measured to solve current pitch diameter of external thread
Need to change the problem of measurement head during the external screw thread of the multigroup different pitch of measurement put.
The technical scheme of pitch diameter of external thread measurement apparatus of the invention is：Pitch diameter of external thread measurement apparatus include measuring scale and
It is oppositely arranged on convex, the recessed measurement head on measuring scale, described recessed measurement head includes measurement headstock, measurement headstock is provided with the
First, second pawl is slided, first, second cunning pawl cooperates composition for clamping the measurement teeth groove of thread, described measurement teeth groove
Including first, second clamping face for clamping thread, the first clamping face is arranged on the first cunning pawl, and the second clamping face is set
Slided on pawl second, first, second described cunning pawl is oriented to measurement headstock and is slidably matched, and the described big I of measurement teeth groove is led to
Cross slip first, second slide pawl regulation, convex measurement head be provided with described measurement teeth groove be arranged in pairs for screw thread teeth groove
The measurement tooth of adaptation.
The measurement headstock is parallel with first, second clamping face respectively to first, second guide direction for sliding pawl.
The first guide rail and the second guide rail are provided with described measurement headstock, on the first described guide rail and the second guide rail
Being oriented to slidable fit has guide pad, and the first described cunning pawl is fixedly connected with the guide pad on the first guide rail, the second described cunning
Pawl is fixedly connected with the guide pad on the second guide rail, and first, second described cunning pawl is respectively by leading on first, second guide rail
It is oriented to measurement headstock to block and is slidably matched, the adjusting means for adjusting measurement teeth groove size is additionally provided with measurement headstock, is adjusted
Regulating device is connected with guide pad and moves the size of regulation measurement teeth groove by driving guide pad.
Described guide pad is connected with the first elastic self-resetting device, and described adjusting apparatus include being threaded in measurement
Adjusting screw on headstock, described guide pad is connected with adjusting screw.
The first graduated scale for measurement teeth groove size is provided with the first described cunning pawl.
Described second cunning pawl is provided with the second graduated scale, and first, second described graduated scale is slidably matched, and described the
First, in the second graduated scale one be sliding pawl main scale, another is sliding pawl vernier scale, and sliding pawl main scale and sliding pawl vernier scale constitute vernier
Slide calliper rule mechanism.
Described convex measurement head is provided with for parallel with screw thread sagittal plane to ensure that the line of convex, recessed measurement head passes through
The V-shaped rest of the diameter of screw thread, the angular bisector of V-shaped rest and two line coincidents of measurement head, described V-shaped rest pass through
Second elastic self-resetting device is connected with convex measurement head.
The second described elastic self-resetting device is for making V-shaped rest be moved forward and backward along convex, recessed measurement head line direction
Spring, described spring one end is connected with V-shaped rest, and the other end is connected with convex measurement head.
Described convex measurement head is provided with pilot hole, and described V-shaped rest is provided with pilot hole along convex, recessed measurement head
Line direction is oriented to the guide post for coordinating.
Described measuring scale is slide measure, and described slide measure is provided with fixed claw and moving jaws, convex, recessed measurement head point
It is not arranged on the fixed claw and moving jaws of slide measure.
Beneficial effects of the present invention are：Pitch diameter of external thread measurement apparatus of the present invention include being arranged on measuring scale
Convex, recessed measurement head, composition is cooperated for clamping by first, second cunning pawl being arranged on the measurement headstock of recessed measurement head
The measurement teeth groove of thread, and convex measurement head be provided with measurement teeth groove be arranged in pairs for the close-fitting survey of screw thread teeth groove
Amount tooth, wherein the big I of measurement teeth groove is adjusted by sliding first, second cunning pawl, with current pitch diameter of external thread measurement apparatus
Compare, pitch diameter of external thread measurement apparatus of the invention can slide the size that pawl adjusts measurement teeth groove by sliding first, second, with
Suitable for the screw thread of different pitch, needs when current pitch diameter of external thread measurement apparatus measure the external screw thread of different pitch are solved
Change the problem of measurement head.
Further, first, second cunning pawl is oriented to cooperation and measures headstock and slides pawl to first, second with measurement headstock
Guide direction is parallel with first, second clamping face respectively, it is ensured that the intersection point of the first clamping face and the second clamping face relative to
The position of measuring scale is constant, and rezeroing is not needed during the screw thread for measuring different pitch.
Further, measurement headstock is provided with and is provided with solid with first, second cunning pawl with first, second guide rail, guide rail
The guide pad of fixed connection, guide pad is connected with the first elastic self-resetting device and is connected with adjusting means, is filled by adjusting
Put and the first elastic self-resetting device can realize the slidable adjustment of guide pad, it is right to be realized by the slidable adjustment of guide pad
The regulation of teeth groove size is measured, it is simple structure, easy to operate.
Further, it is provided with the first graduated scale on the first cunning pawl, the first graduated scale can slide pawl and the by first
Two measure of the changes for sliding pawl relative position measure the size of teeth groove, can adjust first according to the value of known pitch when in use
Graduated scale so that measurement teeth groove size meet the requirements, it is simple to operate.
Further, in first, second described graduated scale one be sliding pawl main scale, another is sliding pawl vernier scale,
By set slide measure mechanism can improve measured value precision further, described convex measurement head be provided with for
Put down at the V-shaped rest of the diameter that the line for ensureing convex, recessed measurement head parallel with screw thread sagittal plane passes through screw thread, the angle of V-shaped rest
Separated time and two line coincidents of measurement head, when the circle where screw thread is contacted with the both sides of V-shaped rest, its diameter is inevitable in V
On the angular bisector of shape support, due to the angular bisector of V-shaped rest and the line coincident of two measurement heads, it is possible to ensure two
The diameter that the line of individual measurement head passes through screw thread.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the specific embodiment of pitch diameter of external thread measurement apparatus of the invention；
Fig. 2 is the measuring principle schematic diagram of Fig. 1 concaves measurement head and convex measurement head；
Fig. 3 is the enlarged drawing of B in Fig. 2；
Fig. 4 is the A of Fig. 1 concave measurement heads to schematic diagram；
Fig. 5 is the sectional view in Fig. 3 along C-C；
Fig. 6 is the sectional view in Fig. 3 along D-D
Fig. 7 is the front view of measurement headstock in Fig. 1；
Fig. 8 is the left view of Fig. 7；
Fig. 9 is the top view of Fig. 8；
Figure 10 is the front view of support block in Fig. 1；
Figure 11 is the left view of Figure 10；
Figure 12 is the front view of vee-block in Fig. 1；
Figure 13 is the left view of Figure 12；
Figure 14 is the structural representation of top board in Fig. 1；
Figure 15 is the front view of measurement tooth in Fig. 1；
Figure 16 is the top view of Figure 15；
Figure 17 is the structural representation of the sliding block in Fig. 1；
Figure 18 is the left view of Figure 17；
Figure 19 is the structural representation of guide post in Fig. 1；
Figure 20 is the structural representation of the first cunning pawl in Fig. 1；
Figure 21 is the left view of Figure 20；
Figure 22 is the left view of Figure 21；
Figure 23 is the structural representation of the second cunning pawl in Fig. 1；
Figure 24 is the left view of Figure 23；
Figure 25 is the left view of Figure 24；
Figure 26 is the quasi- thread tooth type scale diagrams of 60 scales；
Figure 27 is the right of the screw thread to be measured that two sets of pitch diameter of external thread measurement apparatus of specification identical of the invention measure different pitch
Than figure.
Specific embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of a kind of pitch diameter of external thread measurement apparatus of the invention, as shown in Fig. 1 to Figure 27, in the external screw thread
Calipers include measuring scale 1, the recessed measurement head 2 being arranged on measuring scale 1, convex measurement head 3, and measuring scale 1 is slide measure,
Convex, recessed measurement head is fixed on the fixed claw 11 of slide measure, moving jaws 12 by alignment pin respectively, in the present embodiment, recessed
Measurement head 3 is arranged on the fixed claw 11 of slide measure, and convex measurement head 3 is arranged on the moving jaws 12 of slide measure, in this hair
In bright other embodiment, according to practical application request, it is also possible to which recessed measurement head is arranged on moving jaws, and by convex measurement head
It is arranged on fixed claw.Recessed measurement head 2 includes measurement headstock 21, is arranged on measurement headstock 21 and the measurement slide-and-guide of headstock 21
The the first cunning pawl 22, second for coordinating slides pawl 23, adjusting means 24.
It is provided with for the fixed arm 213 with the fixing assembling of fixed claw 11 of slide measure, fixed arm on measurement headstock 21
213 are provided with fixing groove 214, and the side wall of fixing groove is provided with fixing hole 215, is additionally provided with the first guide rail and the second guide rail, first
Being oriented to slidable fit on guide rail and the second guide rail has guide pad, and in the present embodiment, the first guide rail is the first long guiding hole
211, the second guide rail is the second long guiding hole 212, slidable fit is oriented in the first long guiding hole and the second long guiding hole and is led
To block 26, the first cunning pawl is fixedly connected with the guide pad in the first long guiding hole, and second slides leading in pawl and the second long guiding hole
It is fixedly connected to block, first, second slides pawl is slided by the guide pad in first, second long guiding hole with measurement headstock guiding respectively
It is dynamic to coordinate.One end of first, second long guiding hole is provided with the counterbore 216 extended along guide direction, with the on guide pad 26
First, the second long guiding hole is provided with and spring mounting hole 261 is provided with the corresponding one side of counterbore 216, is set in spring mounting hole 261
Compression spring 219 is equipped with, one end of compression spring 219 is arranged in spring mounting hole 261, and the other end is arranged in counterbore 216.
Above-mentioned compression spring 219 is constituted and is arranged on the first elastic self-resetting device of guide pad one end, the first elastic self-resetting device with
Adjusting means is separately positioned on the two ends of guide pad, and adjusting means measures the size of teeth groove by promoting guide pad slidable adjustment,
First elastic self-resetting device is oriented to the elastic force that glide direction resets for guide pad is provided along guide pad.In other embodiments,
Above-mentioned compression spring can also be the extension spring of the other end for being arranged on guide pad, naturally it is also possible to for elastic caoutchouc etc. other
First elastic self-resetting device.It is additionally provided with guide pad 26 for positioning first, second dowel hole 262 for sliding pawl position and using
In the screwed hole 263 for fixing first, second cunning pawl.
First, second cunning pawl includes fixing end and the bare terminal end arranged along the longitudinal direction, and fixing end is arranged on bare terminal end
Rear side, the fixing end of first, second cunning pawl is equipped with fixing hole for being fixedly connected with guide pad, and first, second slides pawl
Relative to be slidably fitted in the measurement teeth groove 25 that bare terminal end forms the thread for clamping screw thread to be measured, measurement teeth groove 25 has
First, second clamping face for clamping thread, the first clamping face 221 is arranged on the bare terminal end 222 of the first cunning pawl 22, second
Clamping face 231 is arranged on the bare terminal end 232 of the second cunning pawl 23, and first, second bare terminal end for sliding pawl is the right angle three of tabular
Angular structure.Pitch diameter of external thread measurement apparatus in the present embodiment are applied to the screw thread that measurement flute profile angle is 60 degree, above-mentioned straight
Triangle two acute angles in angle are respectively 15 degree, 75 degree, two right-angle sides at the 15 of right angled triangle degree of angles with convex, recessed measurement head
The line of centres it is parallel, first, second clamping face is respectively two hypotenuses of right angled triangle.First, second cunning pawl is fixed on
On guide pad in first, second long guiding hole.
The guide direction of the first long guiding hole is parallel with the first clamping face, and the guide direction of the second long guiding hole is pressed from both sides with second
Hold face parallel.Angle between first, second long guiding hole is identical with the flute profile angle angle of screw thread to be measured, for not isodont angle
The screw thread of angle can select different types of pitch diameter of external thread measurement apparatus to measure.In the present embodiment, screw thread to be measured
It is 60 degree of standard threads, the angle between first, second pilot hole is 60 degree, according to the flute profile of screw thread to be measured in other embodiment
The difference of angle angle, the angle adaptability of first, second pilot hole changes.
The fixing end 223 of the first cunning pawl 22 is provided with the first graduated scale, and the fixing end 233 of the second cunning pawl 23 is provided with second
Graduated scale, the first graduated scale is sliding pawl main scale 224, and the second graduated scale is sliding pawl vernier scale 234, sliding pawl main scale 224 and sliding pawl trip
The composition slide measure of scale 234 mechanism, improves the precision of measured value, and the scale value of the second graduated scale is according to measured value precision
Can be adjusted the need for height.First, second slides the bare terminal end of pawl when the zero graduation line of first, second graduated scale overlaps
The summits at two the 15 of right angled triangle degree of angles overlap, first, second graduated scale with 15 degree of right angles at angle of right angled triangle
Side is perpendicular.During the pitch diameter of thread is measured, first, second graduated scale can read first, second cunning pawl along convex, recessed measurement
The relative displacement in the perpendicular direction of head line, by the pitch size of screw thread to be measured, can adjust according to first, second graduated scale
The size of teeth groove is measured to meet the requirements.Be equipped with first, second graduated scale for guide pad on dowel hole 262 and
The corresponding sliding pawl location hole of screwed hole 263 and sliding pawl fixing hole.Due to the guide direction and the first clamping face of the first long guiding hole
Parallel, the guide direction of the second long guiding hole is parallel with the second clamping face, and the pitch adjustment first, second according to screw thread to be measured is slided
During pawl, first, second slides the intersection point of first, second clamping face on pawl all the time in fixed position, it is ensured that first, second
The zero graduation line of graduated scale aligns all the time, need not be repeated to first, second graduated scale during the screw thread to be measured for measuring different pitch
Zeroing.
First gear pin-and-hole 225, second gear pin-and-hole 235 are further respectively had on the rear end face of the fixing end of first, second cunning pawl,
Backing pin 27 is respectively equipped with first gear pin-and-hole 225, second gear pin-and-hole 235, top board 28 is also associated with rear end face, set on top board 28
There is the elongated hole 281 for coordinating with two backing pins respectively.The adjusting means 24 set on measurement headstock 21 includes being threaded in measurement
Adjusting screw 241 and the back of the body on boss on headstock emit 242, and one end of adjusting screw 241 is withstood on top board 28, and by top board
28 can drive guide pad 26, and then adjust the size of measurement teeth groove 25.During adjusting screw precession, first, second cunning pawl edge is led
Moved forward to elongated hole guide direction, first, second slides becoming large-sized for the measurement teeth groove that pawl is formed in bare terminal end, adjusting screw
During back-out, in the presence of compression spring 219, first, second cunning pawl is moved rearwards by along long guiding hole guide direction, and first, the
The size of the measurement teeth groove that two cunning pawls are formed in bare terminal end diminishes.
Convex measurement head 3 includes the support block 31 being fixedly connected with the moving jaws 12 of slide measure, and support block 31 is provided with use
In the support block fixing hole 311 and support block fixing groove 312 that are fixedly connected with moving jaws 12, support block 31 is fixed with measuring claw
32, one end of measuring claw 32 is provided with for measuring tooth 321 with screw thread teeth groove is close-fitting, and the other end is provided with solid with support block 31
The connecting rod 322 of fixed connection, support block 31 is provided with the measuring claw fixing hole 313 for being fixedly connected with measuring claw 32.Measurement
Tooth has for the first mating surface and the second mating surface with the teeth groove side snug fit of screw thread to be measured.
In the present embodiment, screw thread to be measured is 60 degree of screw threads, prunes original equilateral three in actual production during 60 degree of thread tooth types
The flute profile that angular top (H/8) and bottom (H/4) is formed, as shown in figure 26, according to 60 degree of relative dimensions analyses of screw thread：
Major Diam D, central diameter D2, path D1, thread pitch P to be measured, preferable thread H high：
D2=D-3/4H；
D2It is approximately equal to D-0.6495P.
In order that measurement tooth can adapt to different pitch, if the scope of pitch P that survey tool can be applicable is P1-P2,
Preferable thread H scopes high are H1-H2, the tooth top for measuring tooth should prune at least H2/ 4, in addition, 60 degree of screw threads in actual production
There is certain mismachining tolerance, screw thread tooth top and bottom of the tooth generally process certain excessive fillet, in order to ensure that measurement tooth is accurately measured
The central diameter of screw thread to be measured, it is ensured that first, second mating surface of measurement tooth is contacted with the pitch diameter of thread, the tooth top of measurement tooth is pruned height
Degree should be less than H1/2.In other embodiments, for off-gauge screw thread to be measured and other standards screw thread to be measured, based on above-mentioned
Principle, measurement tooth outside pitch line length is adapted to sexually revise.
Accurately the measurement pitch diameter of thread needs to ensure the line of convex, recessed measurement head by the diameter of screw thread to be measured, and reality
By the line of convex, recessed measurement head by the diametrically more difficult of screw thread in operating process, for the ease of operation, in support block 31
It is provided with the V-shaped rest 33 for passing through the diameter of thread for the line for ensureing convex, recessed measurement head parallel with screw thread sagittal plane, V-arrangement
The angular bisector of support 33 and two line coincidents of measurement head, V-shaped rest 33 include two support edges 331 of composition V-arrangement, two
The junction of individual support edge is provided with the mounting hole 332 for being set in the connecting rod 322 of measuring claw 32, V-shaped rest 33 and branch
Spring 34 is provided between bracer 31, spring 34 is the second elastic self-resetting dress being arranged between V-shaped rest 33 and convex measurement head
Put, in other embodiments, the second elastic self-resetting device can also be other elastic self-resetting devices such as elastic caoutchouc.V-arrangement
It is additionally provided with for guide post fixing hole 333 on one support edge 331 of support 33, guiding is fixedly connected with guide post fixing hole
Bar 34, one end of guide post 34 is fixedly connected with V-shaped rest 33, the other end and the pilot hole 314 being arranged in support block 31 along it is convex,
Recessed measurement head line direction slide-and-guide coordinates, and V-shaped rest 33 is always to maintain to the survey on measuring claw in the presence of spring 34
The close trend of amount tooth 321.According to the principle of vee-block, when circle is contacted with the both sides of vee-block simultaneously, the angular bisector of vee-block
Overlapped with the diameter of a circle, when the circle where screw thread is contacted with the both sides of V-shaped rest, its diameter is inevitable at the angle of V-shaped rest
On bisector, and operating of contacts is convenient simultaneously to make the both sides of screw thread to be measured and vee-block, while vee-block can be relative to measurement
Pawl slide anteroposterior, can be with the screw thread to be measured of self adaptation different-diameter.Due to the angular bisector of V-shaped rest and two measurement heads
Line coincident, it is possible to ensure the diameter that two lines of measurement head pass through screw thread.
The size of the measurement teeth groove in the recessed measurement head of pitch diameter of external thread measurement apparatus of the invention is adjustable, is directed to when using
The measurement teeth groove that the screw thread to be measured of different pitch can set different sizes using first, second graduated scale is measured, no
Need to change measurement head, it is simple to operate.
During assembling, two cards that headstock 21 and support block 31 are separately fixed at slide measure by alignment pin will be measured respectively
On pawl, slide pawl 22 by first and be arranged on measurement headstock 21, be directed to block 26 in the second long guiding hole 212 and with second
Sliding pawl 23 is fixedly connected after positioning finger setting by screw, and the first cunning pawl 22 then is inserted into the second cunning pawl 23 and measurement
It is fixedly connected by screw after positioning finger setting between headstock 21 and with the guide pad in the first long guiding hole 211.Will pressure
One end of contracting spring 219 is arranged in counterbore 216, and the other end is arranged in the spring mounting hole 261 on guide pad 26, in compression
In the presence of spring 219, first, second slides pawl all the time in one end of measurement headstock 21, when guide pad 26 is led along long guiding hole
During to sliding, the graduated scale being fixed on two sliding pawls is also relatively moved, and the distances according to the relative movement of two graduated scales can be with
Read the size of measurement teeth groove.Next backing pin 27 is fixed on first, second backing pin on the rear end face of first, second cunning pawl
In hole, top board 28 is sleeved on first, second cunning pawl after then two elongated holes on top board 28 are aligned with two backing pins respectively
Rear end face on, the back of the body is emitted 242 and is sleeved in adjusting screw 241, then by adjusting screw 241 be screwed in measurement headstock 21 on and make
Adjusting screw 241 withstands top board 28, now by precession or back-out adjusting screw top board 28 can be promoted to move, and then by pushing up
Plate 28 drives first, second to slide pawl relative movement, when 241 precession of adjusting screw, the measurement teeth groove that first, second cunning pawl is surrounded
Become large-sized, when adjusting screw 241 is screwed out, first, second slides pawl retraction in the presence of compression spring 219, measures teeth groove
25 sizes diminish.When assembling convex measurement head 3, V-shaped rest 33 is enclosed within the connecting rod 322 of measuring claw 32 and in V-shaped rest 33
Fixing hole 332 in sheathed spring 34, then connecting rod 322 is fixed in support block 31, at the same guide post 34 one end consolidate
It is scheduled in a line of V-shaped rest, the other end is with the pilot hole 314 being arranged in support block 31 along convex-concave measurement head line direction
Slide-and-guide coordinates, and adjustment connecting rod 322, support block 31 and spring 34 make V-shaped rest 33 always receive towards surveying on measuring claw
The active force in amount tooth 321 direction.The erection sequence of concave, convex measurement head can be selected as needed.
When using, the pitch turning adjusting screw of screw thread is measured as needed first, make the scale on first, second cunning pawl
Reading is equal with thread pitch, then carries on the back the tight back of the body and emits, and the screw thread that will be surveyed is placed between convex-concave measurement head, promotes slide measure
Moving jaws, make the measurement tooth on the measurement teeth groove of first, second cunning pawl and measuring claw be fitted close with screw thread to be measured, now
The reading for reading measuring scale is the surveyed pitch diameter of thread.
Figure 27 is to measure two different pitch using two sets of size identical pitch diameter of external thread measurement apparatus of the invention
The measurement process contrast schematic diagram of screw thread to be measured, the first step is two sets of measurement heads of pitch diameter of external thread measurement apparatus of contrast, Figure 27
In the middle line 1011 of the first screw thread to be measured 101 stagger with the middle line 1021 of the second screw thread to be measured 102.
In a kind of other embodiment of pitch diameter of external thread measurement apparatus of the invention, in order to realize that one group of measurement head can be surveyed
The pitch diameter of external thread of different pitch is measured, above-mentioned first, second slides pawl can not also be oriented to cooperation with measurement headstock, and in measurement head
Multigroup first, second is set on seat and slides pawl installation position, different installation positions correspond to different pitch respectively, be now not provided with adjustment
Device；Above-mentioned first, second graduated scale be can also be without setting, and measurement teeth groove is corrected by the screw thread of standard when using；
Above-mentioned first, second cunning pawl can also be without parallel with first, second clamping face with the guide direction for measuring headstock, now constitute
The intersection point for measuring first, second clamping face of teeth groove occurs variation when the pitch of screw thread to be measured is changed, can be by right
The mode of first, second graduated scale rezeroing realizes measuring the pitch diameter of external thread of different pitch.
In addition, sliding the graduated scale on pawl for above-mentioned first, second, above-mentioned second graduated scale can also be without setting, only the
First graduated scale is set on one cunning pawl, and the first graduated scale measures teeth groove by the first, second relative position measure of the change for sliding pawl
Size, now for the ease of reading, indication piece can be set on the second cunning pawl, indication piece is in reset condition and the first scale
The zero graduation alignment of chi；Above-mentioned graduated scale may not be the size for directly displaying measurement teeth groove, and above-mentioned graduated scale can be set
On first, second clamping face or the face adjacent with first, second clamping face on first, second bare terminal end for sliding pawl, first,
Second graduated scale is arranged along the direction parallel with first, second clamping face.
In addition, for the guide frame being play the guiding role to first, second cunning pawl on measurement headstock, above-mentioned first elasticity
Automatic runback device can not also set, and manually make the retraction of first, second cunning pawl；Above-mentioned first, second long guiding hole is also
Can be to be oriented to other guide rails such as straight trough, guide post, guide pad is arranged in correspondence with corresponding guide frame；Above-mentioned first, second
Counterbore in long guiding hole can not also set, and hook structure can be set in one end of long guiding hole, by one end of compression spring
One end of long guiding hole is fixed on by hook, the spring mounting hole on above-mentioned guide pad can also be substituted for hook structure, when
So, in order that compression spring can remain at one end of guide pad and long guiding hole, above-mentioned counterbore, spring mounting hole also may be used
Think the boss structure matched with compression spring internal diameter.
In addition, for the V-shaped rest in convex measurement head, the spring between above-mentioned V-shaped rest and support block can also be without setting,
Now the both sides of V-shaped rest are hinged with support block, and the second elastic self-resetting device is now to be arranged on V-shaped rest both sides with branch
Torsion spring between bracer, the both sides of V-shaped rest are hinged by torsion spring with support block, V-shaped rest is adapted to different-diameter
Screw thread to be measured；Fixed guide post can not also set on above-mentioned V-shaped rest, manually be adjusted when using；Above-mentioned recessed survey
Above-mentioned V-shaped rest can also be set on amount head.Above-mentioned measuring scale can with when micrometer caliper, now convex-concave measurement head set respectively
Put on two claws of micrometer caliper.
Claims (10)
1. a kind of pitch diameter of external thread measurement apparatus, it is characterised in that：Including measuring scale and it is oppositely arranged on convex, recessed on measuring scale
Measurement head, described recessed measurement head includes measurement headstock, and measurement headstock is provided with first, second cunning pawl, and first, second slides pawl phase
Interworking is combined into the measurement teeth groove for clamping thread, described measurement teeth groove include for clamp thread first, the
Two clamping faces, the first clamping face is arranged on the first cunning pawl, and the second clamping face is arranged on the second cunning pawl, and described first,
Two cunning pawls are oriented to measurement headstock and are slidably matched, and the described big I of measurement teeth groove is slided pawl and adjusted by slip first, second, convex
Measurement head is provided with the measurement tooth being arranged in pairs with described measurement teeth groove for being adapted to screw thread teeth groove.
2. pitch diameter of external thread measurement apparatus according to claim 1, it is characterised in that：The measurement headstock is to first, the
The guide direction of two cunning pawls is parallel with first, second clamping face respectively.
3. pitch diameter of external thread measurement apparatus according to claim 2, it is characterised in that：It is provided with described measurement headstock
First guide rail and the second guide rail, slidable fit is oriented on the first described guide rail and the second guide rail guide pad, described
One cunning pawl is fixedly connected with the guide pad on the first guide rail, and the guide pad on the second described cunning pawl and the second guide rail is fixed and connected
Connect, first, second described cunning pawl is oriented to measurement headstock by the guide pad on first, second guide rail is slidably matched respectively,
The adjusting means for adjusting measurement teeth groove size is additionally provided with measurement headstock, adjusting means is connected and passes through with guide pad
Drive the size of guide pad movement regulation measurement teeth groove.
4. pitch diameter of external thread measurement apparatus according to claim 3, it is characterised in that：Described guide pad is connected with first
Elastic self-resetting device, described adjusting apparatus include the adjusting screw being threaded on measurement headstock, described guide pad
It is connected with adjusting screw.
5. pitch diameter of external thread measurement apparatus according to claim any one of 1-4, it is characterised in that：The first described cunning pawl
On be provided with for measure measurement teeth groove size the first graduated scale.
6. pitch diameter of external thread measurement apparatus according to claim 5, it is characterised in that：Described second cunning pawl is provided with the
Two graduated scales, first, second described graduated scale is slidably matched, and one is sliding pawl main scale in first, second described graduated scale,
Another is sliding pawl vernier scale, and sliding pawl main scale and sliding pawl vernier scale constitute slide measure mechanism.
7. pitch diameter of external thread measurement apparatus according to claim any one of 1-4, it is characterised in that：Described convex measurement head
It is provided with the V-shaped rest of the diameter for passing through screw thread for the line to ensure convex, recessed measurement head parallel with screw thread sagittal plane, V
The angular bisector of shape support and two line coincidents of measurement head, described V-shaped rest by the second elastic self-resetting device with
Convex measurement head connection.
8. pitch diameter of external thread measurement apparatus according to claim 7, it is characterised in that：Described the second elastic self-resetting dress
It is set to for making V-shaped rest along the movable spring in convex, recessed measurement head line direction, described spring one end and V-shaped rest
Connection, the other end is connected with convex measurement head.
9. pitch diameter of external thread measurement apparatus according to claim 8, it is characterised in that：Described convex measurement head is provided with to be led
Xiang Kong, described V-shaped rest is provided with the guide post for being oriented to along the line direction of convex, recessed measurement head with pilot hole and being coordinated.
10. pitch diameter of external thread measurement apparatus according to claim 1-4, it is characterised in that：Described measuring scale is vernier
Slide calliper rule, described slide measure is provided with fixed claw and moving jaws, convex, recessed measurement head be separately positioned on slide measure fixed claw and
On moving jaws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611178934.XA CN106767296B (en) | 2016-12-19 | 2016-12-19 | A kind of pitch diameter of external thread measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611178934.XA CN106767296B (en) | 2016-12-19 | 2016-12-19 | A kind of pitch diameter of external thread measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106767296A true CN106767296A (en) | 2017-05-31 |
| CN106767296B CN106767296B (en) | 2019-07-05 |
Family
ID=58890580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611178934.XA Active CN106767296B (en) | 2016-12-19 | 2016-12-19 | A kind of pitch diameter of external thread measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106767296B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767296B (en) * | 2016-12-19 | 2019-07-05 | 河南平高电气股份有限公司 | A kind of pitch diameter of external thread measuring device |
| CN113483630A (en) * | 2020-12-24 | 2021-10-08 | 无锡恒尔捷精密机械制造有限公司 | Detection method for thread pitch diameter reference |
| CN113804086A (en) * | 2020-06-12 | 2021-12-17 | 中国航发商用航空发动机有限责任公司 | Inner diameter measuring tool and measuring method for inner diameter of machine case spigot |
| CN114433500A (en) * | 2021-12-22 | 2022-05-06 | 歌尔光学科技有限公司 | Screw sorting device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048957U (en) * | 1988-12-06 | 1989-12-06 | 大庆石油管理局总机械厂 | Pitch gauge for external screw threads of cylinder |
| CN2122373U (en) * | 1990-12-30 | 1992-11-18 | 彭贤会 | Pitch diameter admeasuring apparatus |
| CN101270969A (en) * | 2007-03-23 | 2008-09-24 | 意大利希皮埃（Cpa）检测设备有限公司 | Detection apparatus and method for screw product |
| CN201748874U (en) * | 2009-09-09 | 2011-02-16 | 孙生强 | Multifunctional inside micrometer |
| CN103353270A (en) * | 2013-07-24 | 2013-10-16 | 东南大学 | Measuring apparatus for tooth surface self reference-based large straight-toothed spur gear pitch deviation |
| CN204373533U (en) * | 2015-01-13 | 2015-06-03 | 四川工程职业技术学院 | A kind of vernier caliper surveying the core diameter of thread |
| CN105300239A (en) * | 2015-10-28 | 2016-02-03 | 吉林东光集团有限公司 | Method and device for measuring pitch diameter of external thread |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767296B (en) * | 2016-12-19 | 2019-07-05 | 河南平高电气股份有限公司 | A kind of pitch diameter of external thread measuring device |
-
2016
- 2016-12-19 CN CN201611178934.XA patent/CN106767296B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2048957U (en) * | 1988-12-06 | 1989-12-06 | 大庆石油管理局总机械厂 | Pitch gauge for external screw threads of cylinder |
| CN2122373U (en) * | 1990-12-30 | 1992-11-18 | 彭贤会 | Pitch diameter admeasuring apparatus |
| CN101270969A (en) * | 2007-03-23 | 2008-09-24 | 意大利希皮埃（Cpa）检测设备有限公司 | Detection apparatus and method for screw product |
| EP1985966A1 (en) * | 2007-03-23 | 2008-10-29 | C.P.A. S.r.l. | Apparatus and method for checking threaded elements |
| CN201748874U (en) * | 2009-09-09 | 2011-02-16 | 孙生强 | Multifunctional inside micrometer |
| CN103353270A (en) * | 2013-07-24 | 2013-10-16 | 东南大学 | Measuring apparatus for tooth surface self reference-based large straight-toothed spur gear pitch deviation |
| CN204373533U (en) * | 2015-01-13 | 2015-06-03 | 四川工程职业技术学院 | A kind of vernier caliper surveying the core diameter of thread |
| CN105300239A (en) * | 2015-10-28 | 2016-02-03 | 吉林东光集团有限公司 | Method and device for measuring pitch diameter of external thread |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767296B (en) * | 2016-12-19 | 2019-07-05 | 河南平高电气股份有限公司 | A kind of pitch diameter of external thread measuring device |
| CN113804086A (en) * | 2020-06-12 | 2021-12-17 | 中国航发商用航空发动机有限责任公司 | Inner diameter measuring tool and measuring method for inner diameter of machine case spigot |
| CN113483630A (en) * | 2020-12-24 | 2021-10-08 | 无锡恒尔捷精密机械制造有限公司 | Detection method for thread pitch diameter reference |
| CN114433500A (en) * | 2021-12-22 | 2022-05-06 | 歌尔光学科技有限公司 | Screw sorting device |
| CN114433500B (en) * | 2021-12-22 | 2024-01-30 | 歌尔科技有限公司 | Screw sorting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106767296B (en) | 2019-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106767296A (en) | A kind of pitch diameter of external thread measurement apparatus | |
| CN105300239A (en) | Method and device for measuring pitch diameter of external thread | |
| CN102506669B (en) | Cutting tool angle measuring instrument | |
| CN111351440A (en) | Measuring device based on grating ruler | |
| CN208805144U (en) | A kind of pitch measuring | |
| CN103673826B (en) | A kind of dimension measurement tool | |
| CN205785002U (en) | A kind of slide calliper rule for check brakes hub | |
| CN201016678Y (en) | Measuring caliper | |
| CN109520393A (en) | A kind of cigar cigarette and cigarette length of tube measuring device and measuring method | |
| CN204649140U (en) | The measurement mechanism in mould slide guide face | |
| CN204043606U (en) | The measurement mechanism of level gauge linearity | |
| CN209166258U (en) | Measure the outside circle of odd number gear shaft gear and the vernier caliper of root diameter | |
| CN208476165U (en) | A kind of plate plane degree detection device | |
| CN208269792U (en) | A kind of adjustable chord length diameter measurer | |
| CN104848772A (en) | Device for measuring slide guiding surface of die | |
| CN220062796U (en) | Rod piece measuring device and structure | |
| TWI618918B (en) | Length measuring device | |
| CN215261505U (en) | Multifunctional universal caliper | |
| CN219531854U (en) | Vernier caliper for jewelry | |
| CN103575183A (en) | Spring length measuring scale | |
| CN204902753U (en) | Displacement sensor detection device | |
| CN209512717U (en) | A kind of height difference measuring device | |
| CN209263816U (en) | The measuring device of axial workpiece of the measurement with external splines | |
| CN215114346U (en) | Adjustable folding reinforcing bar card apart from chi of dismantling | |
| CN113670158B (en) | Template interval positioning device and use method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |