CN220007437U - Air suction clamping jig for roundness measuring instrument - Google Patents
Air suction clamping jig for roundness measuring instrument Download PDFInfo
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- CN220007437U CN220007437U CN202320191004.7U CN202320191004U CN220007437U CN 220007437 U CN220007437 U CN 220007437U CN 202320191004 U CN202320191004 U CN 202320191004U CN 220007437 U CN220007437 U CN 220007437U
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- centering
- central column
- disc
- roundness measuring
- chassis
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- 238000001179 sorption measurement Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to an air suction clamping jig for roundness measuring equipment, which comprises a chassis, wherein a central column is arranged in the middle of the upper side of the chassis, a connecting lantern ring which is in rotary fit with the central column is arranged above the chassis, an annular centering disc is arranged above the connecting lantern ring, and a plurality of centering clamping jaws which are in fit with and clamp a workpiece are hinged to the centering disc; an air passage is formed in the middle of the central column, a positioning head is mounted at the upper end of the central column, and an adsorption hole communicated with the air passage is formed in the positioning head. The air suction clamping jig for measuring the roundness measuring instrument has the advantages of novel structure, reasonable design, high efficiency, convenience, rapidness, strong practicability, and capability of fixing the workpiece in an air suction manner, so that the distortion of a measuring result caused by clamping/fixing the workpiece is avoided to a great extent, and the accuracy of the measuring result is ensured.
Description
Technical Field
The utility model relates to the field of roundness measuring equipment, in particular to an air suction clamping jig for roundness measuring equipment.
Background
When the roundness measuring instrument is used for measuring a workpiece, the workpiece is required to be clamped on a fixture, and the existing clamping modes comprise three modes of thread fixing, chuck fixing and magnetic attraction fixing. The first thread fixing mode is to process a threaded hole at the lower end of a workpiece, and the jig threads into the workpiece to enable the workpiece to generate stress or deformation, so that a measuring result at the position is distorted, and an instrument workbench is adjusted to the limit and reported wrong due to overlarge clamping inclination; the workpiece with overlarge clamping jaw strength in the second chuck fixing mode can generate stress or deformation (damage), the workpiece can not be fixed if the clamping jaw strength is too small, and meanwhile, the problem that an instrument workbench is adjusted to the limit and error is reported if the clamping inclination is too large; the third magnetic attraction fixing mode cannot be suitable for fixing workpieces made of materials such as plastic parts, tungsten steel parts and aluminum parts, the center positioning is difficult, and the measuring result is easy to be distorted due to the interference of a magnetic field on an instrument sensor. Therefore, the existing clamping mode has the problems of low efficiency, inconvenience and rapidness and incapability of ensuring the accuracy of the measurement result.
Disclosure of Invention
Therefore, the utility model aims to provide the air suction clamping jig for measuring the roundness measuring instrument, which is high in efficiency, convenient, quick and wide in application range.
The utility model is realized by adopting the following scheme: the suction clamping jig for measuring the roundness measuring instrument comprises a chassis, wherein a central column is arranged in the middle of the upper side of the chassis, a connecting lantern ring which is in rotary fit with the central column is arranged above the chassis, an annular centering disc is arranged above the connecting lantern ring, and a plurality of centering clamping jaws which are matched with and clamp a workpiece are hinged to the centering disc; an air passage is formed in the middle of the central column, a positioning head is mounted at the upper end of the central column, and an adsorption hole communicated with the air passage is formed in the positioning head.
Furthermore, an annular rotating disc capable of rotating relative to the centering disc is arranged on the inner side of the centering disc, one outward end of each centering clamping jaw is hinged to the centering disc, a pin shaft is connected between the rotating disc and each centering clamping jaw, and the lower end of each pin shaft is rotationally connected to the rotating disc so as to drive the centering clamping jaw to swing when the rotating disc rotates.
Further, the outer side part of the centering disc is connected with a first handle, the outer side part of the rotating disc is connected with a second handle, and a long slot hole for the second handle to penetrate out and swing is formed in the centering disc.
Further, a threaded joint hole which penetrates through the inner side and the outer side and is connected with the air pipe is formed in the connecting lantern ring, an annular groove corresponding to the threaded joint hole is formed in the center column, and a connecting hole which is communicated with the middle air passage is formed in the annular groove.
Furthermore, the center post and the connecting lantern ring are in rotary fit through a pair of bearings, and two sealing rings respectively positioned above and below the annular groove are also arranged between the center post and the connecting lantern ring.
Furthermore, the top of the center column is provided with a mounting groove, and the lower part of the positioning head is embedded into the mounting groove.
Further, the upper end of the connecting lantern ring is provided with three first positioning balls uniformly distributed along the circumferential direction, and the bottom of the centering disc is provided with three first V-shaped clamping grooves matched with the first positioning balls; and three second positioning balls uniformly distributed along the circumferential direction are arranged at the bottom of the chassis.
Compared with the prior art, the utility model has the following beneficial effects: the air suction clamping jig for measuring the roundness measuring instrument has the advantages of novel structure, reasonable design, high efficiency, convenience, rapidness, strong practicability, capability of fixing the workpiece in an air suction manner, capability of avoiding the distortion of a measuring result caused by clamping/fixing the workpiece to a great extent, capability of ensuring the accuracy of the measuring result, suitability for workpieces made of various materials and wide application range.
The present utility model will be further described in detail below with reference to specific embodiments and associated drawings for the purpose of making the objects, technical solutions and advantages of the present utility model more apparent.
Drawings
FIG. 1 is a perspective view of an embodiment of the present utility model;
FIG. 2 is a front view of an embodiment of the present utility model;
FIG. 3 is a cross-sectional view of an embodiment of the present utility model;
FIG. 4 is a perspective view of a chassis in an embodiment of the present utility model;
FIG. 5 is a schematic diagram of a measurement state according to an embodiment of the present utility model;
the reference numerals in the figures illustrate: 100-chassis, 110-center column, 111-air flue, 112-mounting groove, 120-positioning head, 121-adsorption hole, 130-annular groove, 140-connecting hole, 150-bearing, 160-second positioning ball, 200-connecting collar, 210-threaded hole, 220-sealing ring, 230-first positioning ball, 300-centering disk, 310-centering clamping jaw, 320-first handle, 330-long slot hole, 340-first V-shaped clamping groove, 400-rotating disk, 410-pin shaft, 420-second handle, 500-measuring needle and 600-workpiece.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
As shown in fig. 1-5, an air suction clamping jig for roundness measuring equipment comprises a chassis 100, wherein a center column 110 is arranged in the middle of the upper side of the chassis, a connecting sleeve ring 200 which is in rotary fit with the center column is arranged above the chassis 100, an annular centering disc 300 is arranged above the connecting sleeve ring 200, and a plurality of centering clamping jaws 310 which are matched with and clamp a workpiece are hinged to the centering disc; an air passage 111 is formed in the middle of the central column, a positioning head 120 is mounted at the upper end of the central column 110, and an adsorption hole 121 communicated with the air passage is formed in the positioning head 120. The whole air suction clamping jig is arranged on a workbench of a roundness measuring instrument, a workpiece to be measured is arranged on a positioning head, then the workpiece is clamped by using a centering clamping jaw with the same structure to center the workpiece, the axial lead of the workpiece is enabled to coincide with the axial lead of a center column, then the positioning head adsorbs and fixes the workpiece through an adsorption hole 121, then the centering clamping jaw is loosened, roundness measurement can be started, and the workbench drives a chassis to rotate during measurement, so that the workpiece rotates.
In this embodiment, an annular rotating disc 400 capable of rotating relative to the inner side of the centering disc 300 is provided, one end of the centering clamping jaw 310 facing outwards is hinged on the centering disc 300, a pin 410 is connected between the rotating disc 400 and each centering clamping jaw 310, and the lower end of the pin is rotatably connected to the rotating disc so as to drive the centering clamping jaw to swing when the rotating disc rotates; the centering clamping jaw 310 is three, and has the same structure, when the rotary disk rotates anticlockwise, the pin shaft drives the centering clamping jaw 310 to swing towards the middle to clamp a workpiece to center the workpiece, and when the rotary disk rotates clockwise, the pin shaft drives the centering clamping jaw 310 to swing outwards to loosen the workpiece.
In this embodiment, the outer side of the centering disc 300 is connected with a first handle 320, the outer side of the rotating disc is connected with a second handle 420, the centering disc is provided with a long slot 330 for the second handle to pass out and swing, and the first handle 320 is used for holding and fixing the centering disc by a worker to prevent the centering disc from rotating; the second handle is used for controlling the rotating disc to rotate.
In this embodiment, the connecting collar 200 is provided with a threaded hole 210 penetrating the inner side and the outer side and connected with the air pipe, the central column 110 is provided with an annular groove 130 corresponding to the threaded hole 210, the annular groove is provided with a connecting hole 140 communicated with the middle air passage, the threaded hole 210 is connected with the air pipe, the air pipe is communicated with the air passage in the central column through the annular groove, and the air cylinder is connected with the vacuum generator and the switch capable of adjusting the air pressure.
In this embodiment, the center post and the connecting collar are rotatably engaged by a pair of bearings 150, and two sealing rings 220 respectively disposed above and below the annular groove are further disposed between the center post and the connecting collar.
In this embodiment, the top of the center column 110 is provided with a mounting groove 112, the lower part of the positioning head 120 is embedded into the mounting groove, a suitable positioning head can be selected according to the condition of the workpiece to be measured, and the workpiece is placed at the upper end of the positioning head.
In this embodiment, the upper end of the connecting collar is provided with three first positioning balls 230 uniformly distributed along the circumferential direction, and the bottom of the centering disc is provided with three first V-shaped clamping grooves 340 matched with the first positioning balls, and the connecting collar is kept in a stationary state due to the action of the first positioning balls as a worker holds the first handle 320 in one hand to prevent the centering disc from rotating; the bottom of the chassis is provided with three second positioning balls 160 uniformly distributed along the circumferential direction, a workbench of the roundness measuring instrument is provided with a second V-shaped clamping groove matched with the second positioning balls 160, and when the air suction clamping jig is arranged on the workbench of the roundness measuring instrument, the three second positioning balls 160 at the bottom of the chassis are positioned in the second V-shaped positioning clamping groove of the workbench, so that the workbench can synchronously drive the chassis to rotate when rotating.
The air suction clamping jig for roundness measuring equipment has the following gain effects:
(1) The workpiece is fixed in an air suction mode, so that the distortion of a measurement result caused by clamping/fixing of the workpiece is avoided to a great extent;
(2) The operation is simple, the taking and the placing are convenient, and the fixing and the center positioning of the workpiece can be completed in 3 seconds;
(3) The fitting degree of the workpiece and the end face of the positioning head is high, the placing level of the workpiece is primarily ensured, the center positioning is accurate, and the automatic aligning and leveling efficiency of the instrument is greatly improved;
(4) The error reporting caused by the fact that the instrument workbench is adjusted to the limit due to overlarge inclination when the workpiece is clamped and fixed is avoided;
(5) The workpiece is not required to be tapped specifically, so that the machining time is saved, and the workpiece damage caused by fixed clamping during measurement is avoided.
Any of the above-described embodiments of the present utility model disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the utility model, and the numerical values listed above should not limit the protection scope of the utility model.
If the utility model discloses or relates to components or structures fixedly connected with each other, then unless otherwise stated, the fixed connection is understood as: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the utility model can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
The above description is only a preferred embodiment of the present utility model, and is not intended to limit the utility model in any way, and any person skilled in the art may make modifications or alterations to the disclosed technical content to the equivalent embodiments. However, any simple modification, equivalent variation and variation of the above embodiments according to the technical substance of the present utility model still fall within the protection scope of the technical solution of the present utility model.
Claims (7)
1. The utility model provides a roundness measuring equipment is with clamping tool that breathes in which characterized in that: the device comprises a chassis, wherein a central column is arranged in the middle of the upper side of the chassis, a connecting lantern ring which is in rotary fit with the central column is arranged above the chassis, an annular centering disc is arranged above the connecting lantern ring, and a plurality of centering clamping jaws which are matched with and clamp a workpiece are hinged to the centering disc; an air passage is formed in the middle of the central column, a positioning head is mounted at the upper end of the central column, and an adsorption hole communicated with the air passage is formed in the positioning head.
2. The suction clamping jig for roundness measuring equipment according to claim 1, wherein: the inner side of the centering disc is provided with an annular rotating disc which can rotate relative to the centering disc, one outward end of each centering clamping jaw is hinged to the centering disc, a pin shaft is connected between the rotating disc and each centering clamping jaw, and the lower end of each pin shaft is rotationally connected to the rotating disc so as to drive the centering clamping jaw to swing when the rotating disc rotates.
3. The suction clamping jig for roundness measuring equipment according to claim 2, wherein: the outer side part of the centering disc is connected with a first handle, the outer side part of the rotating disc is connected with a second handle, and a long slot hole for the second handle to penetrate out and swing is formed in the centering disc.
4. The suction clamping jig for roundness measuring equipment according to claim 1, wherein: the connecting lantern ring is provided with a threaded connecting hole which penetrates through the inner side and the outer side and is connected with the air pipe, the central column is provided with an annular groove corresponding to the threaded connecting hole, and the annular groove is provided with a connecting hole communicated with the middle air passage.
5. The suction clamping jig for roundness measuring equipment according to claim 4, wherein: the central column and the connecting lantern ring are in rotary fit through a pair of bearings, and two sealing rings which are respectively positioned above and below the annular groove are also arranged between the central column and the connecting lantern ring.
6. The suction clamping jig for roundness measuring equipment according to claim 1, wherein: the top of the center column is provided with a mounting groove, and the lower part of the positioning head is embedded into the mounting groove.
7. The suction clamping jig for roundness measuring equipment according to claim 1, wherein: the upper end of the connecting lantern ring is provided with three first positioning balls uniformly distributed along the circumferential direction, and the bottom of the centering disc is provided with three first V-shaped clamping grooves matched with the first positioning balls; and three second positioning balls uniformly distributed along the circumferential direction are arranged at the bottom of the chassis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320191004.7U CN220007437U (en) | 2023-02-13 | 2023-02-13 | Air suction clamping jig for roundness measuring instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320191004.7U CN220007437U (en) | 2023-02-13 | 2023-02-13 | Air suction clamping jig for roundness measuring instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220007437U true CN220007437U (en) | 2023-11-14 |
Family
ID=88669991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320191004.7U Active CN220007437U (en) | 2023-02-13 | 2023-02-13 | Air suction clamping jig for roundness measuring instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220007437U (en) |
-
2023
- 2023-02-13 CN CN202320191004.7U patent/CN220007437U/en active Active
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