CN105783651A - Conical cover internal height measurement device - Google Patents
Conical cover internal height measurement device Download PDFInfo
- Publication number
- CN105783651A CN105783651A CN201610294224.7A CN201610294224A CN105783651A CN 105783651 A CN105783651 A CN 105783651A CN 201610294224 A CN201610294224 A CN 201610294224A CN 105783651 A CN105783651 A CN 105783651A
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- China
- Prior art keywords
- lever
- cone
- shaped hood
- hole
- gauge rod
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- 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.)
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Classifications
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- 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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
Abstract
The invention discloses a conical cover internal height measurement device comprising a support, a displacement transmission and amplification mechanism and a displacement indication mechanism. The support is provided with a measuring rod which can be vertically elevated. The external part of the measuring rod is sleeved by a locating cone and a first spring. The bottom end of the first spring is fixed. The top end of the first spring is contacted with the bottom surface of the locating cone. The side surface of the locating cone is a conical surface. The conical surface of the locating cone and the internal conical surface of a measured conical cover are identical in conicity. The locating cone and the measuring rod are coaxial. The support is also provided with a locating plate which is contacted with the end surface of the bottom part of the measured conical cover, wherein the upper surface of the locating plate is a plane. The input end of the displacement transmission and amplification mechanism is connected with the lower segment of the measuring rod, and the output end is connected with the input end of the displacement indication mechanism. The axis is located by the conical surface of the locating cone so that the highest point in the measured conical cover can be accurately found in measurement, location is accurate and measurement precision is high; the kinematic pair type of displacement transmission is the higher pair so that displacement transmission is enabled to be accurate and reliable; and operation is convenient and measurement is reliable.
Description
Technical field
The invention belongs to measurement instrument field, particularly to a kind of cone-shaped hood inner height measurement apparatus.
Background technology
At thin-wall conical cover machining operation or inspection process, it is necessary to cone-shaped hood inner height (peak of inside top surface to the distance of cone-shaped hood bottom end face) measurement, to judge that the inner height of cone-shaped hood is whether within the scope run.In the prior art, various general degree of depth measurers include slide gauge and degree of depth measurer etc., when measuring thin-wall conical cover inner height, owing to thin-wall conical cover inside top surface is arc surface, therefore the inside peak of thin-wall conical cover can not be correctly found, also inconvenient with cone-shaped hood bottom end face location, so being inconvenient to find measuring basis, inner height is measured inaccurate.
Summary of the invention
Existing degree of depth measurer can not correctly find the inside peak of thin-wall conical cover, and also inconvenience positions with cone-shaped hood bottom end face, is therefore inconvenient to find measuring basis, and inner height is measured inaccurate.It is an object of the invention to, for above-mentioned the deficiencies in the prior art, it is provided that a kind of cone-shaped hood inner height measurement apparatus.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of cone-shaped hood inner height measurement apparatus, including bearing, displacement transmission and enlarger, displacement indicating mechanism, described bearing is provided with can the gauge rod of vertical lifting, the outer cover of described gauge rod sets locating cone and the first spring, the bottom of the first spring is fixed, and the top of the first spring contacts with the bottom surface of locating cone, and the side of locating cone is the conical surface, the conical surface of locating cone is identical with the inner conical surface tapering of tested cone-shaped hood, and locating cone is coaxial with gauge rod；Bearing is additionally provided with the location-plate that upper surface is plane contacted with the end face bottom tested cone-shaped hood；Described displacement transmission and the input of enlarger connect with the hypomere of gauge rod, and the outfan of displacement transmission and enlarger connects with the input of displacement indicating mechanism.
Being placed on locating cone by tested cone-shaped hood during measurement, end face and the upper surface of location-plate bottom tested cone-shaped hood contact.Locating cone is produced thrust by the first spring so that the conical surface of locating cone and the inner conical surface good contact of measured cone-shaped hood.Owing to the conical surface of locating cone and the inner conical surface tapering of tested cone-shaped hood are identical, locating cone is coaxial with gauge rod, when therefore measuring, tested cone-shaped hood is felt relieved by the conical surface of locating cone, make the axis of cone-shaped hood and the dead in line of gauge rod, thus gauge rod top contacts with the peak within tested cone-shaped hood.The change in location of gauge rod is transmitted by displacement and enlarger is delivered to displacement indicating mechanism, indicates structure to show by displacement, such that it is able to obtain the change of cone-shaped hood internal height.
As a kind of optimal way, also include rotating shaft, described displacement transmission and enlarger include lever and the lever seat being fixed on bearing, described lever is provided with rotating hole, described rotating shaft is through this rotating hole and is fixed on lever seat by lever, and described lever is divided into the long end of lever and lever short end by this rotating hole, and the length of the long end of lever is more than the length of lever short end, the upper surface of lever short end connects with the hypomere of gauge rod, and the upper surface of the long end of lever connects with the input of displacement indicating mechanism.
Lever design is the long end of the lever caused different in size and lever short end, such that it is able to carry out displacement transmission and amplification.
As a kind of optimal way, described displacement indicating mechanism includes amesdial, and the measurement axis of described amesdial connects with the outfan of displacement transmission and enlarger.
By said structure, the certainty of measurement of the present invention is the precision of amesdial, namely 0.001.
As a kind of optimal way, described displacement indicating mechanism includes amesdial, and the measurement axis of described amesdial connects with the upper surface of the long end of lever.
As a kind of optimal way, described gauge rod hypomere has cambered surface hole, the top and bottom in this cambered surface hole are the cambered surface that radius is identical, the nearest normal distance m of upper lower camber side is equal to the height n of lever short end, the two sides in cambered surface hole are plane, the distance of two planes is equal to the width n ＇ of lever, and lever short end penetrates cambered surface hole, the upper cambered surface in cambered surface hole all the time with the upper surface of lever short end.
As a kind of optimal way, the lower surface of described measurement axis is the cambered surface contacted with the upper surface of the long end of lever all the time.
Displacement transmission between gauge rod and lever, adopts the contact of cambered surface and plane, is also adopted by the contact of cambered surface and plane simultaneously between amesdial measurement axis and lever, and displacement transmitted kinematic pair type is higher pair so that displacement transmission is accurately reliable.
Further, described lever is also connected with the resetting means making lever recover horizontal level.
As a kind of optimal way, the axis of measurement axis is a to the distance between the center of rotating hole, and the axis of gauge rod is b, Z=a ÷ b, Z to the distance between the center of rotating hole is the integral multiple of 0.5.
For ease of calculating and producing, amplification Z is designed as the integral multiple of 0.5.
As a kind of optimal way, Z is 2,2.5 or 3.
If Z is excessive, then lever is oversize, and also strain is big mutually for bearing, and whole device volume is excessive, improves production and transport cost；If Z is too small, then displacement equations is inconspicuous, is not easy to observe, and measurement result reliability is low.When Z is 2,2.5 or 3, size compares coordination.
As a kind of optimal way, the end face of described gauge rod is sphere.
The end face of gauge rod is sphere so that during measurement, and the contact site of gauge rod and tested cone-shaped hood is a point, improves certainty of measurement.
The present invention finds axis accurately in the ingenious conical surface location utilizing locating cone so that can accurately finding the peak within tested cone-shaped hood, accurate positioning during measurement, certainty of measurement is high；Displacement transmitted kinematic pair type is higher pair so that displacement transmission is accurately reliable；Easy to operate, measure reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the front view of gauge rod in Fig. 1.
Fig. 4 is the left view of Fig. 3.
Fig. 5 is the front view of lever in Fig. 1.
Fig. 6 is the top view of Fig. 5.
Fig. 7 is the structural representation of gauge stand in Fig. 1.
Fig. 8 is the structural representation of bearing in Fig. 1.
Fig. 9 is the front view of lever seat in Fig. 1.
Figure 10 is the top view of lever seat in Fig. 1.
Figure 11 is the left view of lever seat in Fig. 1.
Figure 12 is the structural representation of Fig. 1 middle sleeve.
Figure 13 is the structural representation of locating cone in Fig. 1.
Figure 14 is the structural representation of standard body.
nullWherein，1 is tested cone-shaped hood，2 is bearing，3 is the first screw，4 is the first spring，5 is sleeve，6 is nut，7 is gauge rod，8 is lever seat，9 is the 3rd screw，10 is rotating shaft，11 is lever，12 is spacer pin，13 is locating cone，14 is location-plate，15 is the second spring，16 is the second screw，17 is gauge stand，18 is locating dowel，19 is lock-screw，20 is measurement axis，21 is spring housing，22 is standard body，23 is amesdial，24 is cannelure，25 is thread segment，26 is cambered surface hole，27 is upper cambered surface，28 is the first mounting hole，29 is pin-and-hole，30 is lever short end，31 is the long end of lever，32 is rotating hole，33 is the 5th hole，34 is the 4th hole，35 is the 6th hole，36 is cavity，37 is through hole，38 is cylindrical section，39 is the first hole，40 is plane，41 is the first screwed hole，42 is the first centre bore，43 is the second centre bore，44 is the second hole，45 is the second screwed hole，46 is the 3rd hole，47 is the second mounting hole，48 is the 3rd centre bore.
Detailed description of the invention
As shown in figure 1 to figure 13, one embodiment of the invention includes bearing 2, displacement transmission and enlarger, displacement indicating mechanism, described bearing 2 is provided with can the gauge rod 7 of vertical lifting, body has the first centre bore 42, first centre bore 42 is built with sleeve 5, the first centre bore 42 and sleeve 5 interference fits.Offering the second centre bore 43 on sleeve 5, gauge rod 7 is sleeved in the second centre bore 43, and the outer cover of described gauge rod 7 sets locating cone 13 and the first spring 4, and the first spring 4 hypomere is set in outside sleeve 5.Locating cone 13 is offered the 3rd centre bore 48, the 3rd centre bore 48 and gauge rod 7 matched in clearance, thus locating cone 13 can on gauge rod 7 slidably, vertical lifting.Second centre bore 43 and gauge rod 7 matched in clearance, gauge rod 7 can in the second centre bore 43 slidably, vertical lifting.The bottom of the first spring 4 is fixed, and the top of the first spring 4 contacts with the bottom surface of locating cone 13.The cannelure 24 that can hold the first spring 4 is offered in the bottom surface of locating cone 13 so that the first spring 4 contacts well with locating cone 13.The side of locating cone 13 is the conical surface, and the conical surface of locating cone 13 is identical with the inner conical surface tapering of tested cone-shaped hood 1, and the coaxiality error of the conical surface of locating cone 13 and the 3rd centre bore 48 of locating cone 13 is less than or equal to 0.02.Locating cone 13 is coaxial with gauge rod 7；Bearing 2 is additionally provided with the location-plate that upper surface is plane 14 contacted with the end face bottom tested cone-shaped hood 1；Through the first screwed hole 41 on bearing 2 and location-plate 14 is fixed on bearing 2 upper surface by the first screw 3, the input of described displacement transmission and enlarger connects with the hypomere of gauge rod 7, and the outfan of displacement transmission and enlarger connects with the input of displacement indicating mechanism.
The hypomere of described sleeve 5 is thread segment 25, is locked on bearing 2 with nut 6 after installation；The stage casing of sleeve 5 is cylindrical section 38, and cylindrical section 38 has the first mounting hole 28.
Present invention additionally comprises rotating shaft 10, described displacement transmission and enlarger include lever 11 and the lever seat 8 being fixed on bearing 2, described lever 11 is provided with rotating hole 32, described rotating shaft 10 is through this rotating hole 32 and is fixed on lever seat 8 by lever 11, described lever 11 is divided into the long end 31 of lever and lever short end 30 by this rotating hole 32, the length of the long end 31 of lever is more than the length of lever short end 30, and the upper surface of lever short end 30 connects with the hypomere of gauge rod 7；Described displacement indicating mechanism includes amesdial 23, and the measurement axis 20 of described amesdial 23 connects with the upper surface of the long end 31 of lever.The lower surface of described measurement axis 20 is the cambered surface contacted with the upper surface of the long end 31 of lever all the time.Lever 11 rotates around rotating shaft 10, makes amesdial 23 show reading.To ensure after installation that the axis of the first mounting hole 28 is positioned at the Plane of rotation of lever 11.
Described bearing 2 is used for the height P holding the part of lever 11 and lever seat 8 more than 5 times with upper lever 11 height n, i.e. P >=5n；So that lever 11 is unlikely to when rotating to interfere with any position of body.Bearing 2 has plane 40, this plane 40 is offered the first hole 39 to install lever seat 8.
Lever 11 is arranged in the second hole 44 of lever seat 8 by rotating shaft 10；Lever seat 8 is provided with the 3rd hole 46 and for holding the second mounting hole 47 of lever 11, and the 3rd screw 9 is through the 3rd hole 46 and is fixedly mounted on bearing 2 by lever seat 8.3rd hole 46 is positioned at the midpoint of the length L of the second mounting hole 47.On lever seat 8, the rear in the second hole 44 is provided with the second screwed hole 45, and rotating shaft 10 is through the second hole 44 and coordinates with the second screwed hole 45.The width of the second mounting hole 47 is more than the width n ＇ 1mm of lever 11.The maximum angle that lever 11 can turn over is α, then tan α=D/L；The span of α is ± 15 °；Then the maximum of α can determine the size of D and L；D is more than lever 11 rotating hole 32 cylindrical D ＇ 3～5mm.
Bearing 2 is provided with gauge stand 17, and gauge stand 17 is provided with four through holes 37, and gauge stand 17 is fixed on bearing 2 by the second screw 16 through through hole 37.Gauge stand 17 has the 4th hole the 34, the 5th hole 33 and the 6th hole 35.Measurement axis 20 outside is cased with spring housing 21, spring housing 21 and measurement axis 20 and is all arranged in the 4th hole 34；Spring housing 21 and measurement axis 20, through the 6th hole 35, are fixed and are locked on bearing 2 by lock-screw 19.Described lever 11 is also connected with the resetting means making lever 11 recover horizontal level.Described resetting means includes locating dowel 18 and the second spring 15, and the epimere of locating dowel 18 is arranged in the 5th hole 33, and the hypomere of locating dowel 18 is enclosed within the second spring 15.During measurement, the second spring 15 is compressed, and deforms upon；When measurement terminates, the second spring 15 restores to the original state, and the long end 31 of lever is applied a pressure so that lever 11 recovers horizontal level.Bearing 2 is additionally provided with the cavity 36 for holding lever 11.
Described gauge rod 7 hypomere has cambered surface hole 26, the top and bottom in this cambered surface hole 26 are the cambered surface that radius is identical, the nearest normal distance m of upper lower camber side is equal to the height n of lever short end 30, the two sides in cambered surface hole 26 are plane, the distance of two planes is equal to the width n ＇ of lever 11, lever short end 30 penetrates cambered surface hole 26, the upper cambered surface 27 in cambered surface hole 26 all the time with the upper surface of lever short end 30.Gauge rod 7 drives lever 11 to rotate around rotating shaft 10, and the long end 31 of lever contacts with the measurement axis 20 of amesdial 23, and height change passes to measurement axis 20, thus amesdial 23 shows certain reading.
The axis of measurement axis 20 is a to the distance between the center of rotating hole 32, and the axis of gauge rod 7 is b, Z=a ÷ b, Z to the distance between the center of rotating hole 32 is the integral multiple of 0.5.Z is 2,2.5 or 3.
The end face of described gauge rod 7 is sphere.Gauge rod 7 epimere has pin-and-hole 29, and described pin-and-hole 29 is built with spacer pin 12.Spacer pin 12 is possible to prevent locating cone 13 to deviate from from gauge rod 7 top.When the tapering needing the inner conical surface of tested cone-shaped hood 1 of measurement is different, only need to pull out spacer pin 12, change the locating cone 13 of corresponding tapering.
Before measurement, the first standard body 22 of making two structure as shown in figure 14.The maximum material size of the inner height H of two standard bodies 22 respectively tested cone-shaped hood 1 theoretical level and least material size.First return to zero amesdial 23 with the standard body 22 of least material size during measurement, then measure the standard body 22 of maximum material size, record the reading x of amesdial 23, then the acceptability limit of tested cone-shaped hood 1 inner height size is 0～x.
Being placed on locating cone 13 by tested cone-shaped hood 1 when measuring product, the end face bottom tested cone-shaped hood 1 contacts with location-plate 14.Now gauge rod 7 touches the internal peak of tested cone-shaped hood 1, and the change in location of gauge rod 7 is delivered to amesdial 23 by lever 11, and now amesdial 23 demonstrates certain reading y.Relatively y and x size, if y≤x, qualified.
The present invention adopts comparative method for measuring, and both tested cone-shaped hood 1 actual measured value was compared with calibrated altitude measured value, and calibrated altitude is maximum material size and the least material size of tested cone-shaped hood 1 theoretical level, and its difference is just the tolerance T range of measurement size.Amplified the display numerical value of amesdial 23 by lever 11 transmission, measurement result is qualified in the margin of tolerance, is defective beyond measured value range.
Claims (10)
1. a cone-shaped hood inner height measurement apparatus, it is characterized in that, including bearing (2), displacement transmission and enlarger, displacement indicating mechanism, described bearing (2) is provided with can the gauge rod (7) of vertical lifting, the outer cover of described gauge rod (7) sets locating cone (13) and the first spring (4), the bottom of the first spring (4) is fixed, the top of the first spring (4) contacts with the bottom surface of locating cone (13), the side of locating cone (13) is the conical surface, the conical surface of locating cone (13) is identical with the inner conical surface tapering of tested cone-shaped hood (1), locating cone (13) is coaxial with gauge rod (7)；Bearing (2) is additionally provided with the location-plate that upper surface is plane (14) that the end face with tested cone-shaped hood (1) bottom contacts；The input of described displacement transmission and enlarger connects with the hypomere of gauge rod (7), and the outfan of displacement transmission and enlarger connects with the input of displacement indicating mechanism.
2. cone-shaped hood inner height measurement apparatus as claimed in claim 1, it is characterized in that, also include rotating shaft (10), described displacement transmission and enlarger include lever (11) and the lever seat (8) being fixed on bearing (2), described lever (11) is provided with rotating hole (32), described rotating shaft (10) is through this rotating hole (32) and is fixed on lever seat (8) by lever (11), described lever (11) is divided into the long end of lever (31) and lever short end (30) by this rotating hole (32), the length of the long end of lever (31) is more than the length of lever short end (30), the upper surface of lever short end (30) connects with the hypomere of gauge rod (7), the upper surface of the long end of lever (31) connects with the input of displacement indicating mechanism.
3. cone-shaped hood inner height measurement apparatus as claimed in claim 1, it is characterised in that described displacement indicating mechanism includes amesdial (23), and the measurement axis (20) of described amesdial (23) connects with the outfan of displacement transmission and enlarger.
4. cone-shaped hood inner height measurement apparatus as claimed in claim 2, it is characterised in that described displacement indicating mechanism includes amesdial (23), and the measurement axis (20) of described amesdial (23) connects with the upper surface of the long end of lever (31).
5. cone-shaped hood inner height measurement apparatus as claimed in claim 4, it is characterized in that, described gauge rod (7) hypomere has cambered surface hole (26), the top and bottom in this cambered surface hole (26) are the cambered surface that radius is identical, the nearest normal distance m of upper lower camber side is equal to the height n of lever short end (30), the two sides in cambered surface hole (26) are plane, the distance of two planes is equal to the width n ＇ of lever (11), lever short end (30) penetrates cambered surface hole (26), the upper cambered surface (27) of cambered surface hole (26) all the time with the upper surface of lever short end (30).
6. cone-shaped hood inner height measurement apparatus as claimed in claim 4, it is characterised in that the lower surface of described measurement axis (20) is the cambered surface contacted with the upper surface of the long end of lever (31) all the time.
7. cone-shaped hood inner height measurement apparatus as claimed in claim 4, it is characterised in that be also connected with the resetting means making lever (11) recover horizontal level on described lever (11).
8. cone-shaped hood inner height measurement apparatus as claimed in claim 4, it is characterized in that, the axis of measurement axis (20) is a to the distance between the center of rotating hole (32), and the axis of gauge rod (7) is b to the distance between the center of rotating hole (32), Z=a ÷ b, Z are the integral multiple of 0.5.
9. cone-shaped hood inner height measurement apparatus as claimed in claim 8, it is characterised in that Z is 2,2.5 or 3.
10. the cone-shaped hood inner height measurement apparatus as described in any one of claim 1 to 9, it is characterised in that the end face of described gauge rod (7) is sphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294224.7A CN105783651A (en) | 2016-05-03 | 2016-05-03 | Conical cover internal height measurement device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610294224.7A CN105783651A (en) | 2016-05-03 | 2016-05-03 | Conical cover internal height measurement device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105783651A true CN105783651A (en) | 2016-07-20 |
Family
ID=56400746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610294224.7A Pending CN105783651A (en) | 2016-05-03 | 2016-05-03 | Conical cover internal height measurement device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105783651A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066850A (en) * | 2020-10-11 | 2020-12-11 | 李文彬 | Measuring tool for measuring hole depth |
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| CN202692909U (en) * | 2012-07-02 | 2013-01-23 | 浙江博力机电制造有限公司 | Hole depth precise measuring instrument |
| CN103604332A (en) * | 2013-10-29 | 2014-02-26 | 格林精密部件(苏州)有限公司 | Dimension testing fixture for spherical holes at two ends of input shaft |
| CN204100959U (en) * | 2014-10-28 | 2015-01-14 | 佳木斯大学 | Dark measuring instrument in a kind of Tapered Cup |
| CN205561718U (en) * | 2016-05-03 | 2016-09-07 | 江南工业集团有限公司 | Height measurement device in tapered hood |
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2016
- 2016-05-03 CN CN201610294224.7A patent/CN105783651A/en active Pending
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| US4219936A (en) * | 1979-09-19 | 1980-09-02 | The United States Of America As Represented By The Secretary Of The Air Force | Hole angularity gage |
| CN202692909U (en) * | 2012-07-02 | 2013-01-23 | 浙江博力机电制造有限公司 | Hole depth precise measuring instrument |
| CN103604332A (en) * | 2013-10-29 | 2014-02-26 | 格林精密部件(苏州)有限公司 | Dimension testing fixture for spherical holes at two ends of input shaft |
| CN204100959U (en) * | 2014-10-28 | 2015-01-14 | 佳木斯大学 | Dark measuring instrument in a kind of Tapered Cup |
| CN205561718U (en) * | 2016-05-03 | 2016-09-07 | 江南工业集团有限公司 | Height measurement device in tapered hood |
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| Title |
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| 宋学濂: "《机械式测微仪》", 28 February 1964 * |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066850A (en) * | 2020-10-11 | 2020-12-11 | 李文彬 | Measuring tool for measuring hole depth |
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Application publication date: 20160720 |