CN103017625A - Super-long depth external caliper gauge - Google Patents
Super-long depth external caliper gauge Download PDFInfo
- Publication number
- CN103017625A CN103017625A CN2012105408925A CN201210540892A CN103017625A CN 103017625 A CN103017625 A CN 103017625A CN 2012105408925 A CN2012105408925 A CN 2012105408925A CN 201210540892 A CN201210540892 A CN 201210540892A CN 103017625 A CN103017625 A CN 103017625A
- Authority
- CN
- China
- Prior art keywords
- gauge
- handle
- head
- chaining pin
- lower handle
- 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
Images
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
A super-long depth external caliper gauge comprises an upper handle, a lower handle, an upper gauge head and a lower gauge head, wherein the upper handle and the lower handle are in a hinge connection through a revolving shaft and the upper gauge head and the lower gauge head are respectively arranged on head portions of the upper handle and the lower handle. The super-long depth external caliper gauge is characterized in that a meter claw gauge block and a meter with a point gauge are provided as well, wherein the meter claw gauge block is arranged on the lower handle and a curved surface which is provided with a certain curve track and a certain width is formed on the top end of the meter claw gauge block; the meter is arranged on the upper handle, and the point gauge is in tough with the curved surface which is formed on the top end of the meter claw gauge block and can move along the curve track on the curved surface in a relative rotation process of the upper handle and the lower handle. The super-long depth external caliper gauge has the advantages of solving the problem of the limited sounding of the general external caliper gauge, being capable of meeting the requirement of detecting the wall thickness of the deeper cavity casting, being good in gauging accuracy and being great in engineering application value.
Description
Technical field
The present invention relates to a kind of measurer, especially a kind of snap gauge with overlength depth measurement.
Background technology
Though index zone off-balancesheet calliper can be measured conventional products thickness, can't measure the casting section thickness with darker chamber, brought thus the measurement difficult problem of darker die cavity cast product wall thickness.Therefore, need a kind of overlength depth measurement snap gauge to realize that the wall thickness of darker die cavity foundry goods detects.
Summary of the invention
The purpose of this invention is to provide a kind of snap gauge with overlength depth measurement, to overcome the limited problem of general snap gauge depth measurement, satisfy the wall thickness testing requirement to darker die cavity foundry goods.
According to above-mentioned purpose, the invention provides a kind of snap gauge with overlength depth measurement, comprise by rotating shaft hinged upper handle and lower handle, and the up and down gauge head that is installed in respectively upper handle and lower handle head, it is characterized in that, also comprise table pawl gauge block and with the card table of chaining pin, wherein: described table pawl gauge block is installed on the lower handle, its top is the curved surface that has the specific curves track and have one fixed width; Described card table is installed on the upper handle, and its chaining pin contacts with the curved surface on described table pawl gauge block top, and can upper and lower handle in relative rotation in the process on this curved surface the track along described curve necessarily mobile.
Preferably, the curvilinear path of described table pawl gauge block top curved surface should have following characteristics: set up plane right-angle coordinate in plane, card table chaining pin head movement locus line place, take the intersection point of this plane and shaft centerline as true origin, vertical range under the calliper between the measurement point of gauge head and this center line is D, take the straight line that is parallel to this air line distance as X-axis, the coordinate figure (X of every bit in this coordinate system on the curve
B, Y
B) all satisfy following formula, and each number average is absolute value in the formula:
X
B＝cos(β-α)·d+2sinα·sin(α/2)·D/S，
Y
B＝sin(β-α)·d+2cosα·sin(α/2)·D/S；
Wherein, α is the subtended angle of calliper; Card table chaining pin head was to the distance of true origin when d was the up and down measuring point interlock of calliper, β is line between this moment chaining pin head and true origin and the angle between the X-axis forward, and β is the arbitrary value between 30 °-90 °, the determining positions at chaining pin head place during specifically by gauge head interlock about the calliper and card table indication zero-bit; S represents the ratio between the travel displacement of the dial plate indicated value of card table and chaining pin.Wherein, the optimal proportion of d and D is: D=5d.
Wherein, the optimum valuing range of D is: 150mm≤D≤550mm.
Further, the jaw of upper handle and lower handle is preferably designed as asymmetrical shape so that the gauge head of calliper can deep enough some special die cavity foundry goods, the long and narrow foundry goods inside cavity of certain model engine turnaround section, inducer for example.
The present invention has overcome the limited problem of general snap gauge depth measurement, can satisfy the wall thickness testing requirement to darker die cavity foundry goods, has simultaneously preferably measuring accuracy, has the engineering using value.This snap gauge can be implemented in the wall thickness of maximum 500mm under fathoming and detect, and measuring accuracy can be controlled in ± 0.05mm simultaneously.
Description of drawings
Fig. 1 is the synoptic diagram during the gauge head interlock up and down in the embodiment of the invention 1;
Fig. 2 is the synoptic diagram of the snap gauge among Fig. 1 when opening the α angle;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is the synoptic diagram of another embodiment of the present invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
As shown in Figure 1, in most preferred embodiment of the present invention, overlength depth measurement snap gauge comprises by rotating shaft hinged upper handle and lower handle, and the up and down gauge head that is installed in respectively upper handle and lower handle head, is connected with spring between the upper lower handle; Also comprise table pawl gauge block and with the card table of chaining pin, wherein: table pawl gauge block is installed on the lower handle, and its top is the curved surface that has the specific curves track and have one fixed width; The card table is installed on the upper handle, and its chaining pin head contacts with the curved surface on table pawl gauge block top, and can move along the curvilinear path of setting on this curved surface in the process in relative rotation at upper and lower handle.This device can be regarded as the lever transmission mechanism of around the shaft center line rotation in the measurement, finally read measured value by the dial gauge that is installed on the measuring appliance.
Snap gauge is measured by the upper and lower surface that gauge head up and down blocks wall thickness to be measured district, and the chord length that this moment, measurement mechanism opened between gauge head up and down can be similar to think to be exactly wall thickness value to be measured.This chord length is delivered to card meter reading end after the relation transformation by a certain percentage.For example the travel displacement proportionate relationship of the dial plate indicated value of card table and chaining pin is assumed to be 5: 1 (being S=5), after this just means that wall thickness value to be measured is delivered to the reading end, the shift value of chaining pin is to treat 1/5 of measured value, and card table dial plate indicated value is amplified reduction with the shift value of chaining pin with 5 times again, thereby finally indicates wall thickness value to be measured.
The card table can be selected dial gauge.Card table chaining pin head and table pawl gauge block Surface Contact, and slide displacement occurs under the surface guiding of table pawl gauge block, namely the displacement of chaining pin depends on the curved surface track of table pawl gauge block.So make measuring junction chord length to be measured and card table chaining pin displacement concern motion change in strict accordance with certain than row, specific curved surface track is realized on must dependence table pawl gauge block, therefore need to obtain the mathematic(al) representation of table pawl gauge block curved surface, this expression formula is also namely blocked the Movement Locus Equation of table chaining pin head.
In conjunction with Fig. 1 and Fig. 2, layout enlarged drawing with reference to figure 3, in the present invention, the curvilinear path of described table pawl gauge block top curved surface has following characteristics: set up plane right-angle coordinate in plane, card table chaining pin head movement locus line place, take the intersection point of this plane and shaft centerline as true origin O, vertical range under the calliper between the measurement point of gauge head and this center line is D, take the straight line that is parallel to this air line distance as X-axis, and the coordinate figure (X of every bit in this coordinate system on the curve
B, Y
B) all satisfy following formula, and each number average is absolute value in the formula:
X
B＝cos(β-α)·d+2sinα·sin(α/2)·D/5 (1)
Y
B＝sin(β-α)·d+2cosα·sin(α/2)·D/5 (2)
Wherein, α is the subtended angle of calliper; Card table chaining pin head was to the distance of true origin when d was the up and down measuring point interlock of calliper, β is line between this moment chaining pin head and true origin and the angle between the X-axis forward, and β is the arbitrary value between 30 °-90 °, the determining positions at chaining pin head place during specifically by gauge head interlock about the calliper and card table indication zero-bit.
Be the variable except folding angle α in formula (1), (2), other values are known constant.With different folding angle α substitution formulas 12,13, can calculate the accurate coordinates value (X that corresponding with it B is ordered
B, Y
B), if a series of B point that will obtain carries out curve fitting, can obtain the movement locus of chaining pin head, namely show pawl gauge block curved surface trajectory.
Obviously, in certain coordinate span, the B point quantity that is used for curve is more, and the table pawl gauge block curved surface track that match obtains will be more accurate, and final measuring accuracy will be higher.
Consider that table pawl gauge block can show chaining pin with card sliding friction occurs continually, in order to guarantee use durability degree and the Measurement sensibility of calliper, finally selected the manufacturing material that the Cr12MoV steel is used as showing the pawl gauge block.
In calliper is measured, require upper and lower handle should have certain rigidity, thereby to avoid accuracy and degree of stability that excessive elastic deformation has influence on measured value; The design of the jaw shape of handle should be satisfied and fathoms and for the requirement of the accessibility of measuring die cavity; The handgrip part of handle should be considered the convenience of hand-held.
In order to guarantee the running accuracy of rotating shaft between the upper lower handle, can consider to adopt the slim bearing part of high precision.In the present invention, having selected the code name of breathing out axle production is the bearing of Z529, and practical effect is good.
For the good fit of gauge head about guaranteeing and tested cast(ing) surface, consider simultaneously the use durability degree of gauge head, gauge head uses the Cr12MoV steel to be used as making material, has adopted the bulb design of Φ 1 to come as the gauge head end on the structure.
After calliper uses a period of time, the increase that the gauge head wearing and tearing occur unavoidably and bring thus measuring error, the error amount in the certain limit can look after and guide to make it to reduce and even eliminate by the calliper precision.When the measurement error value that is caused by gauge head wearing and tearing can't be decreased to by the instruction of calliper precision in the error range of 0.05mm, should change gauge head and by technical requirement again adjustment calliper, to recover the due measuring accuracy of calliper.
In another embodiment of the present invention, has the snap gauge of overlength depth measurement as shown in Figure 4.Its structure and snap gauge shown in Figure 1 are similar, and critical part is basic identical, but the length of handle is larger.And the jaw of upper handle and lower handle is asymmetrical shape, and described upper measuring point is that lower measuring point is apart from more than 3 times of lower handle jaw height apart from the height of upper handle jaw.
In other embodiments of the invention, adopt the different designs parameter designing, use two curve equation of above-mentioned table pawl (1) and (2), designed the overlength depth measurement calliper of all size, the testing result of its main structure parameters and measuring accuracy is as shown in the table.
Table 1
Claims (10)
1. overlength depth measurement snap gauge, comprise by rotating shaft hinged upper handle and lower handle, and the up and down gauge head that is installed in respectively upper handle and lower handle head, it is characterized in that, also comprise table pawl gauge block and with the card table of chaining pin, wherein: described table pawl gauge block is installed on the lower handle, and its top is the curved surface that has the specific curves track and have one fixed width; Described card table is installed on the upper handle, and its chaining pin contacts with the curved surface on described table pawl gauge block top, and can upper and lower handle in relative rotation in the process on this curved surface the track along described curve necessarily mobile.
2. snap gauge as claimed in claim 1, it is characterized in that, the curvilinear path of described table pawl gauge block top curved surface has following characteristics: set up plane right-angle coordinate in plane, card table chaining pin head movement locus line place, take the intersection point of this plane and shaft centerline as true origin, vertical range under the calliper between the measurement point of gauge head and this center line is D, take the straight line that is parallel to this air line distance as X-axis, coordinate figure (the XB of every bit in this coordinate system on the curve, YB) all satisfy following formula, and each number average is absolute value in the formula:
X
B＝cos(β-α)·d+2sinα·sin(α/2)·D/S，
Y
B＝sin(β-α)·d+2cosα·sin(α/2)·D/S；
Wherein, α is the subtended angle of calliper; Card table chaining pin head was to the distance of true origin when d was the up and down measuring point interlock of calliper, β is line between this moment chaining pin head and true origin and the angle between the X-axis forward, and β is the arbitrary value between 30 °-90 °, the determining positions at chaining pin head place during specifically by gauge head interlock about the calliper and card table indication zero-bit; S represents the ratio between the travel displacement of the dial plate indicated value of card table and chaining pin.
3. snap gauge as claimed in claim 2 is characterized in that, in described formula, and D=5d.
4. snap gauge as claimed in claim 2 is characterized in that, 150mm≤D≤550mm.
5. snap gauge as claimed in claim 1 is characterized in that, described card table is dial gauge.
6. snap gauge as claimed in claim 1 is characterized in that, described rotating shaft is the slim bearing of high precision.
7. snap gauge as claimed in claim 1 is characterized in that, described table pawl gauge block Cr12MoV steel making.
8. snap gauge as claimed in claim 1 is characterized in that, described upper and lower gauge head is that the diameter with the Cr12MoV steel making is the bulb of 1mm.
9. snap gauge as claimed in claim 1 is characterized in that, the jaw of described upper handle and lower handle is asymmetrical shape, and described upper measuring point is that lower measuring point is apart from more than 3 times of lower handle jaw height apart from the height of upper handle jaw.
10. snap gauge as claimed in claim 1 is characterized in that, is provided with linking springs between described upper handle and the lower handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210540892.5A CN103017625B (en) | 2012-12-14 | 2012-12-14 | A kind of overlength depth measurement snap gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210540892.5A CN103017625B (en) | 2012-12-14 | 2012-12-14 | A kind of overlength depth measurement snap gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103017625A true CN103017625A (en) | 2013-04-03 |
| CN103017625B CN103017625B (en) | 2016-05-18 |
Family
ID=47966509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210540892.5A Active CN103017625B (en) | 2012-12-14 | 2012-12-14 | A kind of overlength depth measurement snap gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103017625B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542783A (en) * | 2013-10-18 | 2014-01-29 | 北京动力机械研究所 | Dial snap gauge |
| CN104006717A (en) * | 2014-06-13 | 2014-08-27 | 湖北旭扬工贸有限公司 | Measuring tool special for measuring wall thickness of shell part |
| CN107702625A (en) * | 2017-10-18 | 2018-02-16 | 吴振明 | A kind of measurer for being easy to detect housing wall thickness |
| CN108050912A (en) * | 2017-12-01 | 2018-05-18 | 中国航发南方工业有限公司 | A kind of engine blade thickness detecting method |
| WO2018176755A1 (en) * | 2017-03-29 | 2018-10-04 | 江苏亚威机床股份有限公司 | Sheet thickness detection device |
| CN108627063A (en) * | 2018-07-18 | 2018-10-09 | 桂林市晶瑞传感技术有限公司 | A kind of adjustable digital display calliper gauge of measurement range |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0558194A1 (en) * | 1992-02-25 | 1993-09-01 | Robert Edward Best | Measuring calliper |
| CN2506972Y (en) * | 2001-11-08 | 2002-08-21 | 邢乐 | Test probe replaceable calipers with meter |
| EP1470792A1 (en) * | 2003-04-24 | 2004-10-27 | Centerpulse Orthopedics Ltd. | Distance measurement instrument for pedical screws |
| CN201074996Y (en) * | 2007-09-27 | 2008-06-18 | 贵州群建齿轮有限公司 | Dial gauge caliper for measuring inner hole groove diameter |
| CN201096489Y (en) * | 2008-02-02 | 2008-08-06 | 国家工程复合材料产品质量监督检验中心 | Multipurpose thickness meter |
| CN201285263Y (en) * | 2008-11-14 | 2009-08-05 | 齐齐哈尔二机床(集团)有限责任公司 | Internal groove caliper gauge |
| CN101949670A (en) * | 2010-08-20 | 2011-01-19 | 江苏凯特汽车部件有限公司 | Special measuring implement and method for measuring wall thickness of wheel rim of caliper-type car |
-
2012
- 2012-12-14 CN CN201210540892.5A patent/CN103017625B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0558194A1 (en) * | 1992-02-25 | 1993-09-01 | Robert Edward Best | Measuring calliper |
| CN2506972Y (en) * | 2001-11-08 | 2002-08-21 | 邢乐 | Test probe replaceable calipers with meter |
| EP1470792A1 (en) * | 2003-04-24 | 2004-10-27 | Centerpulse Orthopedics Ltd. | Distance measurement instrument for pedical screws |
| CN201074996Y (en) * | 2007-09-27 | 2008-06-18 | 贵州群建齿轮有限公司 | Dial gauge caliper for measuring inner hole groove diameter |
| CN201096489Y (en) * | 2008-02-02 | 2008-08-06 | 国家工程复合材料产品质量监督检验中心 | Multipurpose thickness meter |
| CN201285263Y (en) * | 2008-11-14 | 2009-08-05 | 齐齐哈尔二机床(集团)有限责任公司 | Internal groove caliper gauge |
| CN101949670A (en) * | 2010-08-20 | 2011-01-19 | 江苏凯特汽车部件有限公司 | Special measuring implement and method for measuring wall thickness of wheel rim of caliper-type car |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542783A (en) * | 2013-10-18 | 2014-01-29 | 北京动力机械研究所 | Dial snap gauge |
| CN104006717A (en) * | 2014-06-13 | 2014-08-27 | 湖北旭扬工贸有限公司 | Measuring tool special for measuring wall thickness of shell part |
| WO2018176755A1 (en) * | 2017-03-29 | 2018-10-04 | 江苏亚威机床股份有限公司 | Sheet thickness detection device |
| CN107702625A (en) * | 2017-10-18 | 2018-02-16 | 吴振明 | A kind of measurer for being easy to detect housing wall thickness |
| CN108050912A (en) * | 2017-12-01 | 2018-05-18 | 中国航发南方工业有限公司 | A kind of engine blade thickness detecting method |
| CN108627063A (en) * | 2018-07-18 | 2018-10-09 | 桂林市晶瑞传感技术有限公司 | A kind of adjustable digital display calliper gauge of measurement range |
| CN108627063B (en) * | 2018-07-18 | 2024-01-26 | 桂林市晶瑞传感技术有限公司 | Digital display caliper with adjustable measuring range |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103017625B (en) | 2016-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103017625A (en) | Super-long depth external caliper gauge | |
| CN101846486A (en) | Large circular arc radius measuring instrument and measuring method | |
| CN102506632A (en) | Device for measuring taper hole | |
| CN107990816A (en) | A kind of pavement flatness checking device and detection method | |
| CN103884256A (en) | Diameter measurement ruler | |
| CN209116930U (en) | Slip shaft yoke phase special gauge | |
| CN105004247B (en) | One kind measurement circular arc device | |
| CN105865308A (en) | Odd-tooth external spline cross-rod distance measuring device | |
| CN204730792U (en) | A kind of hand-held internal diameter guide rail conical surface measurement mechanism | |
| CN204944439U (en) | A kind of structure-improved of grating scale detection head | |
| CN106767493A (en) | A kind of variable reference face pit depth measuring method | |
| CN103542783A (en) | Dial snap gauge | |
| CN202145125U (en) | Tooth thickness measuring tool for low-angle tooth-thickness-changing gear | |
| CN201955045U (en) | Distance ruler | |
| CN201724641U (en) | Inner arc radius measuring instrument | |
| CN207846171U (en) | A kind of pavement flatness checking device | |
| CN202329460U (en) | Taper hole measurement device | |
| CN203364721U (en) | Measuring device used for inner and outer circular grooves of belt pulley | |
| CN202853515U (en) | Vernier caliper used for measuring lock port dimensions of U-shaped steel sheet pile | |
| CN102749014B (en) | Tolerance inspection caliper rule | |
| CN103542789A (en) | Measuring device for width or height tolerance in irregular profile steel | |
| CN203772189U (en) | Diameter measuring ruler | |
| CN208952847U (en) | A kind of N font thin-walled parts wall thickness measuring ruler | |
| CN107167054A (en) | A kind of slide measure for surveying curved surface wall thickness | |
| CN203940797U (en) | The calliper survey instrument of tape reading device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |