CN204177332U - A kind of Inner arc measurer for curvity radius - Google Patents
A kind of Inner arc measurer for curvity radius Download PDFInfo
- Publication number
- CN204177332U CN204177332U CN201420616014.1U CN201420616014U CN204177332U CN 204177332 U CN204177332 U CN 204177332U CN 201420616014 U CN201420616014 U CN 201420616014U CN 204177332 U CN204177332 U CN 204177332U
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- CN
- China
- Prior art keywords
- measurer
- inner arc
- center pit
- measurer body
- radius
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Abstract
The utility model discloses a kind of Inner arc measurer for curvity radius.This device comprises measurer body (1), and the shape of measurer body (1) is the T-shaped of mirror writing; Measurer body (1) is provided with center pit (9); Center pit (9) upper end is fixedly connected with gauge outfit (2); Center pit (9) lower end is slidably connected with extension measuring staff (3).The utility model adopts the measurer body of inverted T-shape to coordinate with gauge outfit to form Inner arc radius-of-curvature easy device, the inner arc surface only needing the horizontal component of inverted T-shape to lean against workpiece during measurement just can be measured fast the radius-of-curvature error amount of inner arc surface, be specially adapted to processing site detect, be specially adapted to quality control when producing in enormous quantities, effectively solve the quality control difficult problem produced in enormous quantities and there is inner arc surface product.There is certain dissemination.
Description
Technical field
the utility model relates to a kind of Inner arc measurer for curvity radius, belongs to Inner arc radius-of-curvature testing tool technical field.
Background technology
at mechanical processing industry, run into the problem of measuring workpieces inner arc surface radius-of-curvature sometimes.Current metering system adopts the instrumentation such as three-dimensional and tool microscope to measure.Although this metering system measuring accuracy is high, measures cumbersome, be applicable to single-piece or small serial production mode.And be the product of 100% for requirements of mass production inspection rate, above-mentioned metering system efficiency is too low, has a strong impact on manufacturing schedule, is obviously unpractical, also uneconomical.
Utility model content
the purpose of this utility model is, provides a kind of Inner arc measurer for curvity radius, during to solve production in enormous quantities, can detect the problem of Inner arc radius-of-curvature fast, to overcome the deficiencies in the prior art.
the technical solution of the utility model:
a kind of Inner arc measurer for curvity radius, comprise measurer body, the shape of measurer body is the T-shaped of mirror writing; Measurer body is provided with center pit; Center pit upper end is fixedly connected with gauge outfit; Center pit lower end is slidably connected with extension measuring staff.
in aforementioned Inner arc measurer for curvity radius, described center pit overlaps with the vertical center line of measurer body.
in aforementioned Inner arc measurer for curvity radius, the horizontal center line mid point of described T-shaped measurer body is crossing with the vertical center line of measurer body.
in aforementioned Inner arc measurer for curvity radius, described center pit is the through hole running through T-shaped measurer body horizontal component.
in aforementioned Inner arc measurer for curvity radius, described gauge outfit top is provided with zeroing knob, is provided with table bar bottom gauge outfit, and table bar bottom is provided with elastic measuring head.
in aforementioned Inner arc measurer for curvity radius, described table bar inserts from center pit upper end, and the measurer body of table bar side is provided with threaded hole, and the lock-screw of table bar in threaded hole is fixedly connected with measurer body.
in aforementioned Inner arc measurer for curvity radius, described extension measuring staff one end is plane, and the other end is cone, and the planar ends extending measuring staff contacts from the insertion of center pit lower end and with the elastic measuring head of table bar lower end and connects.
in aforementioned Inner arc measurer for curvity radius, described table bar and extend measuring staff all with center pit clearance fit.
in aforementioned Inner arc measurer for curvity radius, the xsect of described T-shaped measurer body horizontal component is rectangle, and the bottom surface of rectangle is reference field.
in aforementioned Inner arc measurer for curvity radius, two bases of described length direction are reference edge.
compared with prior art, the utility model adopts the measurer body of inverted T-shape to coordinate with gauge outfit to form Inner arc radius-of-curvature easy device, the inner arc surface only needing the horizontal component of inverted T-shape to lean against workpiece during measurement just can be measured fast the radius-of-curvature error amount of inner arc surface, be specially adapted to processing site detect, be specially adapted to quality control when producing in enormous quantities, effectively solve the quality control difficult problem produced in enormous quantities and there is inner arc surface product.There is certain dissemination.
Accompanying drawing explanation
fig. 1 is structural representation of the present utility model;
fig. 2 is the structural representation of measurer body;
fig. 3 is calibration schematic diagram of the present utility model;
fig. 4 is application schematic diagram of the present utility model; ,
fig. 5 is schematic diagram of the present utility model.
being labeled as in accompanying drawing: 1-measurer body, 2-gauge outfit, 3-extends measuring staff, 4-returns to zero knob, and 5-shows bar, 6-elastic measuring head, 7-horizontal center line, 8-vertical center line, 9-center pit, 10-threaded hole, 11-lock-screw, 12-reference field, 13-reference edge, the measured arc surface of 14-, 15-standard gauge block, 16-standard platform.
Embodiment
below in conjunction with drawings and Examples, the utility model is described in further detail, but not as to any restriction of the present utility model.
a kind of Inner arc measurer for curvity radius, as depicted in figs. 1 and 2: comprise measurer body 1, the shape of measurer body 1 is the T-shaped of mirror writing; Measurer body 1 is provided with center pit 9; Center pit 9 upper end is fixedly connected with gauge outfit 2; Center pit 9 lower end is slidably connected with extension measuring staff 3.Center pit 9 overlaps with the vertical center line 8 of measurer body 1.Horizontal center line 7 mid point of T-shaped measurer body is crossing with the vertical center line 8 of measurer body 1.Center pit 9 is the through holes running through T-shaped measurer body horizontal component.Gauge outfit 2 top is provided with zeroing knob 4, is provided with table bar 5 bottom gauge outfit 2, and table bar 5 bottom is provided with elastic measuring head 6.Table bar 5 inserts from center pit 9 upper end, and the measurer body 1 of table bar 5 side is provided with threaded hole 10, and the lock-screw 11 of table bar 5 in threaded hole 10 is fixedly connected with measurer body 1.Extending measuring staff 3 one end is plane, and the other end is cone, and the planar ends extending measuring staff 3 contacts from the insertion of center pit 9 lower end and with the elastic measuring head 6 of table bar 5 lower end and connects.Table bar 5 and extend measuring staff 3 all with center pit 9 clearance fit.The xsect of T-shaped measurer body horizontal component is rectangle, and the bottom surface of rectangle is reference field 12.Two bases of reference field 12 length direction are reference edge 13.
Embodiment
this is such as shown in Fig. 1 and 2, comprises measurer body 1, gauge outfit 2 and extends measuring staff 3 three part; Gauge outfit 2 top is provided with zeroing knob 4, is provided with table bar 5 bottom gauge outfit 2, is provided with elastic measuring head 6 bottom table bar 5; The shape of measurer body 1 is the T-shaped of mirror writing, and the mid point of T-shaped horizontal center line 7 overlaps with T-shaped vertical center line 8; T-shaped vertical component is provided with the center pit 9 running through T-shaped horizontal component; The table bar 5 of gauge outfit 2 inserts center pit 9 from upper end, and the measurer body 1 of table bar 5 side is provided with threaded hole 10, and threaded hole 10 is vertical with center pit 9; Be provided with lock-screw 11 in threaded hole 10, table bar 5 is fixedly connected with measurer body 1 through lock-screw 11; Extending measuring staff 3 one end is plane, and the other end is cone, and the planar ends extending measuring staff 3 is inserted center pit 9 from lower end and contacts with the elastic measuring head 6 of table bar 5 lower end; Table bar 5 and extend measuring staff 3 all with center pit 9 clearance fit.The xsect of T-shaped measurer body horizontal component is rectangle, and the rectangular bottom surface of measurer body horizontal component is reference field 12.Two bases of reference field 12 length direction are reference edge 13.
measuring method of the present utility model
before measuring, need first to calibrate gauge outfit, during calibration as shown in Figure 3, first on standard platform 16, placing two tile heights is H
0
benchmark gauge block 15, then insert center pit 9 from the reference field 12 below measurer body 1 downwards by extending the cone of measuring staff 3, then be placed on two pieces of benchmark gauge blocks 15 by the reference field 12 of measurer body 1, extending measuring staff 3 when putting can not contact with benchmark gauge block 15.Again the table bar 5 bottom gauge outfit 2 is inserted from center pit 9 top, slightly press down gauge outfit 2, make about 1/2 degree of depth of elastic measuring head 6 indentation table bar 5 of table bar 5 end.Judging the method for about 1/2 degree of depth of elastic measuring head 6 indentation table bar 5, can see the indicator of gauge outfit 2, when indicator is positioned at range about 1/2 place, is exactly the position of about 1/2 degree of depth of elastic measuring head 6 indentation table bar 5 of table bar 5 end.Then with lock-screw 11, table bar 5 is fixed, make it not move freely vertically.Alignd with pointer by 0 on the zeroing knob 4 mileometer adjustment dish on gauge outfit 2 top again.So far measurer calibration is complete.When measuring same batch, general only needs calibrates once, can measure.
when measuring, as shown in Figure 4, directly the reference edge 13 at reference field 12 two ends below measurer body 1 is placed on measured arc surface 14.During placement, the axial vertical of the length direction of reference field 12 and measured arc surface 14 must be guaranteed, judge that whether vertical method is, guarantee to fit tightly between the reference edge 13 at reference field 12 two ends and measured arc surface 14, do not stay gap.Because the elastic measuring head 6 showing bar 2 lower end is resilient, protruding under the effect of table bar inner spring, contact with the bottom surface of measured arc surface 14.Now, the side-play amount △ a of reading pointer relative to 0, the height H of side-play amount △ a and benchmark gauge block 15
0
sum is the action H=of measured arc surface 14.Bring chord length L and action H into formula R=H/2+L
2
/ 8H just just can calculate the radius of curvature R of measured circular arc.Or according to the tolerance up and down of radius of curvature R, directly calculate the margin tolerance of the side-play amount △ a of measured arc surface 14, during inspection, as long as the side-play amount △ a value measured is positioned within margin tolerance be pieces O.K., out-of-size scope is defective.
during concrete measurement, if require all to need to measure accurate radius of curvature R to each part workpiece of batch, can according to measurement range, at interval of certain side-play amount △ a, in advance according to formula R=H/2+L
2
/ 8H calculates corresponding radius of curvature R, does that side-play amount △ a is as shown in Table 1 corresponding with radius of curvature R to be shown.
the radius of curvature R of measured arc surface 14 is obtained by the side-play amount △ a table look-at measured.
practical measuring examples
measured circular arc radius R 2.5 0-0.05mm, the length of measurer body reference field is known as L=4.692mm.The known H of height of standard gauge block
0
=1.670mm, calculates the arc radius R that standard gauge block is corresponding
0
=2.483mm.
if survey the side-play amount △ a=+0.053 of the measured arc surface 14 obtained, then the action Hn=side-play amount △ a+ standard gauge block height H of measured arc surface 14
0
=1.723mm.The radius of curvature R can being found measured arc surface 14 by table 1 between 2.458 ~ 2.460mm, should can determine that the radius of curvature R of measured arc surface 14 should be 2.459mm.
if gauge outfit is replaced with digital watch, also measurement data directly can be connected with single-chip microcomputer, be calculated by single-chip microcomputer, directly demonstrate the radius of curvature R of measured arc surface 14.
principle of work of the present utility model
as shown in Figure 5, in figure, A point and C point are the reference edge 13 at reference field 12 two ends and the intersection point of measured arc surface 14, in figure, B point is the intersection point extending measuring staff bottom cone and measured arc surface 14, D point is the mid point of A point and C point line (i.e. chord length L), O point is the center of circle of measured arc surface 14, H is the distance (action namely between measured arc surface 14 corresponding A point and C point line) between D point and B point, and R is the radius-of-curvature of measured arc surface 14.
as seen from Figure 5, triangle OAD is right-angle triangle, therefore, and R
2
=(AD)
2
+ (OD)
2
, wherein: AD=1/2L, OD=R-H.That is: R
2
=(1/2L)
2
+ (R-H)
2
; By R
2
=(1/2L)
2
+ (R-H)
2
can obtain: R=H/2+L
2
/ 8H.
by formula R=H/2+L
2
/ 8H is visible, as long as known chord length L and action H, can calculate the radius of curvature R of measured arc surface 14.Wherein: chord length L is the length (known) of measurer body reference field, and action H is the height H of standard gauge block 15
0
the side-play amount △ a of the measured arc surface 14 that+actual measurement obtains, that is: H=H
0
+ △ a.Wherein: the height H of standard gauge block 15
0
(known), as long as the side-play amount △ a therefore measuring measured arc surface 14, can calculate the radius of curvature R of measured arc surface 14.
the utility model adopts the measurer body of inverted T-shape to coordinate with gauge outfit to form Inner arc radius-of-curvature easy device, the inner arc surface only needing the horizontal component of inverted T-shape to lean against workpiece during measurement just can be measured fast the radius-of-curvature error amount of inner arc surface, be specially adapted to processing site detect, be specially adapted to quality control when producing in enormous quantities, effectively solve the quality control difficult problem produced in enormous quantities and there is inner arc surface product.There is certain dissemination.
Claims (10)
1. an Inner arc measurer for curvity radius, is characterized in that: comprise measurer body (1), and the shape of measurer body (1) is the T-shaped of mirror writing; Measurer body (1) is provided with center pit (9); Center pit (9) upper end is fixedly connected with gauge outfit (2); Center pit (9) lower end is slidably connected with extension measuring staff (3).
2. Inner arc measurer for curvity radius according to claim 1, is characterized in that: described center pit (9) overlaps with the vertical center line (8) of measurer body (1).
3. Inner arc measurer for curvity radius according to claim 2, is characterized in that: horizontal center line (7) mid point of described T-shaped measurer body is crossing with the vertical center line (8) of measurer body (1).
4. Inner arc measurer for curvity radius according to claim 3, is characterized in that: described center pit (9) is the through hole running through T-shaped measurer body horizontal component.
5. Inner arc measurer for curvity radius according to claim 4, is characterized in that: described gauge outfit (2) top is provided with zeroing knob (4), and gauge outfit (2) bottom is provided with table bar (5), and table bar (5) bottom is provided with elastic measuring head (6).
6. Inner arc measurer for curvity radius according to claim 5, it is characterized in that: described table bar (5) is inserted from center pit (9) upper end, the measurer body (1) of table bar (5) side is provided with threaded hole (10), and table bar (5) lock-screw (11) in threaded hole (10) is fixedly connected with measurer body (1).
7. Inner arc measurer for curvity radius according to claim 6, it is characterized in that: described extension measuring staff (3) one end is plane, the other end is cone, and the planar ends extending measuring staff (3) contacts from the insertion of center pit (9) lower end and with the elastic measuring head (6) of table bar (5) lower end and connects.
8. Inner arc measurer for curvity radius according to claim 7, is characterized in that: described table bar (5) and extend measuring staff (3) all with center pit (9) clearance fit.
9. Inner arc measurer for curvity radius according to claim 8, it is characterized in that: the xsect of described T-shaped measurer body horizontal component is rectangle, the bottom surface of rectangle is reference field (12).
10. Inner arc measurer for curvity radius according to claim 9, is characterized in that: two bases in described reference field (12) direction are reference edge (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616014.1U CN204177332U (en) | 2014-10-23 | 2014-10-23 | A kind of Inner arc measurer for curvity radius |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420616014.1U CN204177332U (en) | 2014-10-23 | 2014-10-23 | A kind of Inner arc measurer for curvity radius |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204177332U true CN204177332U (en) | 2015-02-25 |
Family
ID=52566138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420616014.1U Active CN204177332U (en) | 2014-10-23 | 2014-10-23 | A kind of Inner arc measurer for curvity radius |
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| Country | Link |
|---|---|
| CN (1) | CN204177332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504147A (en) * | 2020-11-16 | 2021-03-16 | 株洲时代新材料科技股份有限公司 | Detection tool and detection method for radius of arc surface |
-
2014
- 2014-10-23 CN CN201420616014.1U patent/CN204177332U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504147A (en) * | 2020-11-16 | 2021-03-16 | 株洲时代新材料科技股份有限公司 | Detection tool and detection method for radius of arc surface |
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| GR01 | Patent grant |