CN111551140A - Positioning jig with multiple repositioning mechanisms for three-dimensional measurement - Google Patents
Positioning jig with multiple repositioning mechanisms for three-dimensional measurement Download PDFInfo
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- CN111551140A CN111551140A CN202010374978.XA CN202010374978A CN111551140A CN 111551140 A CN111551140 A CN 111551140A CN 202010374978 A CN202010374978 A CN 202010374978A CN 111551140 A CN111551140 A CN 111551140A
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- bottom plate
- positioning
- pressing
- positioning jig
- fixedly mounted
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- 230000007246 mechanism Effects 0.000 title claims abstract description 54
- 238000005259 measurement Methods 0.000 title claims abstract description 32
- 239000003302 ferromagnetic material Substances 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
-
- 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
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a positioning jig with a multi-repositioning mechanism for three-dimensional measurement, which comprises: the device comprises a bottom plate, a vertical positioning mechanism, a horizontal positioning mechanism and a first reference column, wherein the bottom plate is of a rectangular frame structure, the vertical positioning mechanism comprises a plurality of positioning devices, and the positioning devices are detachably arranged on the bottom plate; the horizontal positioning mechanism comprises a pressing mechanism and a limiting device, the pressing mechanism is fixedly arranged on one side frame of the bottom plate, and the limiting device is fixedly arranged on the side frame of the bottom plate on the other side opposite to the side frame where the pressing mechanism is arranged; the first reference column is fixedly arranged on the bottom plate. The positioning jig with the multiple repositioning mechanisms for three-dimensional measurement provided by the invention can be used for fully positioning the workpiece in the horizontal direction and the vertical direction, so that the workpiece is firmly positioned, and errors in measurement data are avoided.
Description
Technical Field
The invention relates to a positioning jig, in particular to a positioning jig with a multi-repositioning mechanism for three-dimensional measurement.
Background
A three-dimensional measuring instrument is an instrument for measuring by three-dimensional point taking, and the main working principle is as follows: the measured object is placed in a three-dimensional measurement space, the coordinate positions of the measured points on the measured object can be obtained, and the geometric size, shape and position of the measured object are calculated according to the space coordinate values of the points.
The three-dimensional measuring instrument is generally equipped with a positioning fixture for fixing the position of the workpiece to be measured. When the existing positioning jig is used for positioning a workpiece, the workpiece is only pressed on the surface of the support column, so that the movement of the workpiece in the vertical direction is limited, and the deviation in the horizontal direction of the workpiece is not limited, so that the workpiece is positioned insecurely, and the accuracy of a measuring result is influenced.
Disclosure of Invention
In view of this, the invention provides a positioning jig for three-dimensional measurement with a multi-repositioning mechanism, which can fully position a workpiece in the horizontal direction and the vertical direction, ensure that the workpiece is positioned firmly, and avoid errors in measurement data.
Therefore, the invention provides a positioning jig with a multi-repositioning mechanism for three-dimensional measurement, which comprises:
the bottom plate is of a rectangular frame structure;
the vertical positioning mechanism comprises a plurality of positioning devices, and the positioning devices are detachably arranged on the bottom plate;
the horizontal positioning mechanism comprises a pressing mechanism and a limiting device, the pressing mechanism is fixedly arranged on one side frame of the bottom plate, and the limiting device is fixedly arranged on the side frame of the bottom plate on the other side opposite to the side frame where the pressing mechanism is arranged;
and the first reference column is fixedly arranged on the bottom plate.
Further, positioner includes base, adjust knob, spiral arm and support column, and base detachable installs on the bottom plate, and adjust knob passes through threaded connection on the base, and the spiral arm cover is established on adjust knob, is provided with the spring between spiral arm and adjust knob's the roof, and support column fixed mounting is on the bottom plate, and the depression bar of spiral arm tip supports on the top surface of support column.
Further, the first reference column is fixedly installed on the bottom plate through the first cushion block.
Furthermore, the positioning device is fixedly installed on the bottom plate through a second cushion block, and the thickness of the second cushion block is equal to that of the first cushion block.
Further, a second reference column is arranged on the second cushion block, and the length of the second reference column is equal to that of the first reference column.
Furthermore, the pressing mechanism comprises a first mounting seat and a pressing bolt, the first mounting seat is fixedly mounted on the bottom plate, the pressing bolt is fixedly mounted on the first mounting seat, and the pressing bolt is parallel to the bottom plate.
Further, stop device includes second mount pad and ejector pin, and second mount pad fixed mounting is on the bottom plate, and ejector pin fixed mounting is on the second mount pad, and the ejector pin is on a parallel with the bottom plate, and the mounting height of ejector pin equals clamp bolt's mounting height.
When the positioning jig with the multiple repositioning mechanisms for three-dimensional measurement is used, the positioning jig is placed on the three-dimensional workbench, and the handles are arranged on two sides of the positioning jig, so that the positioning jig is convenient to move and adjust. The workpiece is placed on the supporting column, one end of the workpiece abuts against the ejector rod of the limiting device, the rotating arm of the positioning device is rotated, so that the pressing rod at the bottom of the rotating arm abuts against the surface of the workpiece, the spring is arranged between the rotating arm and the adjusting knob, even if the height of the surface of the workpiece changes, the pressing rod can still be kept on the surface of the workpiece, in addition, the adjusting knob is connected onto the base through the thread, the adjusting knob can compress the spring by changing the length screwed into the base, and therefore the pressure of the pressing rod on the rotating arm to the workpiece is controlled; in the horizontal direction of the bottom plate, the pressing bolt is rotated to enable the pressing bolt to move along the axial direction, the end part of the pressing bolt is abutted against the side face of the workpiece, and the force for fixing the workpiece can be controlled by rotating the pressing bolt. The positioning device and the horizontal positioning mechanism enable the workpiece to be firmly fixed on the jig, and accuracy of measurement is guaranteed. The first reference column is used as a reference for ensuring the repeated positioning precision. A limit column is further arranged on the periphery of the bottom plate and used for protecting the internal structure of the jig.
The positioning jig with the multiple repositioning mechanisms for three-dimensional measurement provided by the invention can be used for fully positioning the workpiece in the horizontal direction and the vertical direction, so that the workpiece is firmly positioned, and errors in measurement data are avoided.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a positioning device in a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base in a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a first block in a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second block in a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The first embodiment is as follows:
referring to fig. 1 to 5, a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to a first embodiment of the present invention is shown, and includes:
the base plate 1 is of a rectangular frame structure;
the vertical positioning mechanism comprises a plurality of positioning devices 2, and the positioning devices 2 are detachably arranged on the bottom plate 1;
the horizontal positioning mechanism comprises a pressing mechanism 3 and a limiting device 4, wherein the pressing mechanism 3 is fixedly arranged on one side frame of the bottom plate 1, and the limiting device 4 is fixedly arranged on the side frame of the bottom plate 1 on the other side opposite to the side frame where the pressing mechanism 3 is arranged;
a first reference column 5 fixedly mounted on the base plate 1.
Specifically, referring to fig. 1 to 5, the positioning device 2 includes a base 21, an adjusting knob 22, a rotating arm 23 and a supporting column 24, the base 21 is detachably mounted on the bottom plate 1, the adjusting knob 22 is connected to the base 21 through a thread, the rotating arm 23 is sleeved on the adjusting knob 22, a spring is arranged between the rotating arm 23 and a top plate 221 of the adjusting knob 22, the supporting column 24 is fixedly mounted on the bottom plate 1, and a pressing rod 231 at the end of the rotating arm 23 abuts against the top surface of the supporting column 24.
Specifically, referring to fig. 1 to 5, the pressing mechanism 3 includes a first mounting seat 31 and a pressing bolt 32, the first mounting seat 31 is fixedly mounted on the base plate 1, the pressing bolt 32 is fixedly mounted on the first mounting seat 31, and the pressing bolt 32 is parallel to the base plate 1.
Specifically, referring to fig. 1 to 5, the limiting device 4 includes a second mounting seat 41 and a push rod 42, the second mounting seat 41 is fixedly mounted on the bottom plate 1, the push rod 42 is fixedly mounted on the second mounting seat 41, the push rod 42 is parallel to the bottom plate 1, and the mounting height of the push rod 42 is equal to the mounting height of the pressing bolt 32.
When the positioning jig with the multiple repositioning mechanisms for three-dimensional measurement is used, the positioning jig is placed on the three-dimensional workbench, and the handles are arranged on two sides of the positioning jig, so that the positioning jig is convenient to move and adjust. The workpiece is placed on the supporting column, one end of the workpiece abuts against the ejector rod of the limiting device, the rotating arm of the positioning device is rotated, so that the pressing rod at the bottom of the rotating arm abuts against the surface of the workpiece, the spring is arranged between the rotating arm and the adjusting knob, even if the height of the surface of the workpiece changes, the pressing rod can still be kept on the surface of the workpiece, in addition, the adjusting knob is connected onto the base through the thread, the adjusting knob can compress the spring by changing the length screwed into the base, and therefore the pressure of the pressing rod on the rotating arm to the workpiece is controlled; in the horizontal direction of the bottom plate, the pressing bolt is rotated to enable the pressing bolt to move along the axial direction, the end part of the pressing bolt is abutted against the side face of the workpiece, and the force for fixing the workpiece can be controlled by rotating the pressing bolt. The positioning device and the horizontal positioning mechanism enable the workpiece to be firmly fixed on the jig, and accuracy of measurement is guaranteed. The first reference column is used as a reference for ensuring the repeated positioning precision. A limit column is further arranged on the periphery of the bottom plate and used for protecting the internal structure of the jig.
The positioning jig with the multiple repositioning mechanisms for three-dimensional measurement provided by the invention can be used for fully positioning the workpiece in the horizontal direction and the vertical direction, so that the workpiece is firmly positioned, and errors in measurement data are avoided.
Example two:
referring to fig. 1 to fig. 5, a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to a second embodiment of the present invention is shown in the drawings, and the present embodiment further adopts the following technical solutions as improvements on the basis of the above embodiments: the magnet is disposed inside the pressing rod 231, and the supporting column 24 is made of ferromagnetic material.
Magnet is arranged inside the pressing rod, and the supporting column is made of ferromagnetic materials, so that the pressing rod can be accurately positioned above the supporting column when the rotating swing arm rotates, the pressing rod and the supporting column act on a workpiece simultaneously, and the workpiece is prevented from deforming. In addition, the magnetic force of the magnet can improve the positioning effect of the pressure rod.
Example three:
referring to fig. 1 to fig. 5, a positioning fixture for three-dimensional measurement with a multi-repositioning mechanism according to a third embodiment of the present invention is shown in the drawings, and the present embodiment further adopts the following technical solutions as improvements on the basis of the above embodiments: the first reference column 5 is fixedly arranged on the bottom plate 1 through a first cushion block 51; the positioning device 2 is fixedly arranged on the bottom plate 1 through a second cushion block 6, and the thickness of the second cushion block 6 is equal to that of the first cushion block 51; the second block 6 is provided with a second reference column 7, and the length of the second reference column 7 is equal to that of the first reference column 5.
The base of the positioning device is fixedly arranged on the bottom plate through the bolts, in order to enable the positioning jig to be suitable for workpieces with various thicknesses, the first reference column and the positioning device can be fixedly arranged on the cushion block to adjust the installation height, and then the cushion block is fixedly arranged on the bottom plate through the bolts. The reference column can be arranged nearby on the cushion block where the positioning device is located, and the precision in repeated positioning is guaranteed.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. The utility model provides a positioning jig is used in cubic measurement with many relocation mechanisms which characterized in that includes:
the bottom plate (1), the bottom plate (1) is a rectangular frame structure;
the vertical positioning mechanism comprises a plurality of positioning devices (2), and the positioning devices (2) are detachably arranged on the bottom plate (1);
the horizontal positioning mechanism comprises a pressing mechanism (3) and a limiting device (4), the pressing mechanism (3) is fixedly arranged on one side frame of the bottom plate (1), and the limiting device (4) is fixedly arranged on the side frame of the bottom plate (1) on the other side opposite to the side frame where the pressing mechanism (3) is located;
a first reference column (5) fixedly mounted on the base plate (1).
2. The positioning jig with the multiple repositioning mechanism for the three-dimensional measurement according to claim 1, wherein the positioning device (2) comprises a base (21), an adjusting knob (22), a rotating arm (23) and a supporting column (24), the base (21) is detachably mounted on the base plate (1), the adjusting knob (22) is connected to the base (21) through threads, the rotating arm (23) is sleeved on the adjusting knob (22), a spring is arranged between the rotating arm (23) and a top plate (221) of the adjusting knob (22), the supporting column (24) is fixedly mounted on the base plate (1), and a pressing rod (231) at the end of the rotating arm (23) abuts against the top surface of the supporting column (24).
3. The positioning jig with multiple repositioning mechanisms for three-dimensional measurement according to claim 2, wherein the pressing rod (231) is internally provided with a magnet, and the supporting column (24) is made of a ferromagnetic material.
4. The positioning jig with the multiple repositioning mechanism for three-dimensional measurement according to claim 1, wherein the first reference column (5) is fixedly mounted on the base plate (1) through a first spacer (51).
5. A three-dimensional measuring positioning jig with a multiple repositioning mechanism according to claim 4, wherein the positioning device (2) is fixedly mounted on the base plate (1) through a second block (6), and the thickness of the second block (6) is equal to that of the first block (51).
6. A three-dimensional measuring positioning jig with a multiple repositioning mechanism according to claim 5, characterized in that the second head block (6) is provided with a second reference column (7), and the length of the second reference column (7) is equal to the length of the first reference column (5).
7. The positioning jig with the multiple repositioning mechanism for three-dimensional measurement according to claim 1, wherein the pressing mechanism (3) comprises a first mounting seat (31) and a pressing bolt (32), the first mounting seat (31) is fixedly mounted on the bottom plate (1), the pressing bolt (32) is fixedly mounted on the first mounting seat (31), and the pressing bolt (32) is parallel to the bottom plate (1).
8. The positioning jig with the multiple repositioning mechanism for the three-dimensional measurement according to claim 7, wherein the limiting device (4) comprises a second mounting seat (41) and a top rod (42), the second mounting seat (41) is fixedly mounted on the bottom plate (1), the top rod (42) is fixedly mounted on the second mounting seat (41), the top rod (42) is parallel to the bottom plate (1), and the mounting height of the top rod (42) is equal to that of the compression bolt (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010374978.XA CN111551140A (en) | 2020-04-30 | 2020-04-30 | Positioning jig with multiple repositioning mechanisms for three-dimensional measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010374978.XA CN111551140A (en) | 2020-04-30 | 2020-04-30 | Positioning jig with multiple repositioning mechanisms for three-dimensional measurement |
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| Publication Number | Publication Date |
|---|---|
| CN111551140A true CN111551140A (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010374978.XA Pending CN111551140A (en) | 2020-04-30 | 2020-04-30 | Positioning jig with multiple repositioning mechanisms for three-dimensional measurement |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005169537A (en) * | 2003-12-09 | 2005-06-30 | Canon Electronics Inc | Workpiece positioning and fixing tool |
| CN206382768U (en) * | 2016-12-29 | 2017-08-08 | 广东长盈精密技术有限公司 | Localization tool |
| CN109128907A (en) * | 2018-09-30 | 2019-01-04 | 山东金成机械有限公司 | Bushing Xiyanping injection tooling |
| CN209841021U (en) * | 2019-05-08 | 2019-12-24 | 河源市昌红精机科技有限公司 | Levelness measuring jig for shell |
| CN110722379A (en) * | 2019-11-08 | 2020-01-24 | 科德数控股份有限公司 | Machine tool machining tool |
| CN212363139U (en) * | 2020-04-30 | 2021-01-15 | 亿和精密工业(威海)有限公司 | Positioning jig with multiple repositioning mechanisms for three-dimensional measurement |
-
2020
- 2020-04-30 CN CN202010374978.XA patent/CN111551140A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005169537A (en) * | 2003-12-09 | 2005-06-30 | Canon Electronics Inc | Workpiece positioning and fixing tool |
| CN206382768U (en) * | 2016-12-29 | 2017-08-08 | 广东长盈精密技术有限公司 | Localization tool |
| CN109128907A (en) * | 2018-09-30 | 2019-01-04 | 山东金成机械有限公司 | Bushing Xiyanping injection tooling |
| CN209841021U (en) * | 2019-05-08 | 2019-12-24 | 河源市昌红精机科技有限公司 | Levelness measuring jig for shell |
| CN110722379A (en) * | 2019-11-08 | 2020-01-24 | 科德数控股份有限公司 | Machine tool machining tool |
| CN212363139U (en) * | 2020-04-30 | 2021-01-15 | 亿和精密工业(威海)有限公司 | Positioning jig with multiple repositioning mechanisms for three-dimensional measurement |
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