CN112729375B

CN112729375B - Measuring device with high stability and mounting method

Info

Publication number: CN112729375B
Application number: CN202110346580.XA
Authority: CN
Inventors: 刘光照; 刘成; 徐一华; 曹葵康; 杨广
Original assignee: Tztek Technology Co Ltd
Current assignee: Tztek Technology Co Ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-07-09
Anticipated expiration: 2041-03-31
Also published as: CN112729375A

Abstract

The invention provides a measuring device with high stability and an installation method, wherein the measuring device comprises a base station, a coaxial assembly and a sensor mechanism, wherein the coaxial assembly is provided with two first coaxial holes with circle centers positioned on the same straight line; after the installation is finished, the circle centers of the two first coaxial holes are collinear with the central axis of the sensor assembly; the sensor assembly rotates around the central axis of the sensor assembly under the driving force of the first driving assembly so as to measure a workpiece to be measured. This measuring equipment installs rigid coaxial assembly in sensor assembly's both sides, and coaxial assembly makes sensor assembly guarantee coaxial stability when rotatory, further improves measuring equipment's measurement accuracy.

Description

Measuring device with high stability and mounting method

Technical Field

The invention relates to the technical field of measurement, in particular to measuring equipment with high stability.

Background

At present, the measurement of products is generally contact measurement and non-contact measurement, the contact measurement has higher accuracy and reliability, but the contact measurement cost is higher due to the measurement datum point, the abrasion during contact and the like. The non-contact measurement has a fast measurement speed but insufficient accuracy compared with the contact measurement, and a sensor with higher accuracy is used for measurement in order to improve the accuracy of the non-contact measurement, and the sensor has heavier mass. In order to reduce the occupied space of the whole machine and realize multi-angle measurement, the product is generally measured by a rotary sensor. Because the mass of the sensor is large, the sensor cannot ensure the coaxial stability and precision when rotating for measurement.

Disclosure of Invention

In view of the above, the present invention provides a measuring apparatus with high stability and a mounting method thereof, in which coaxial components are mounted on two sides of a sensor mechanism to ensure the coaxial stability and accuracy of the sensor component in the rotating motion.

In order to solve the technical problems, the invention adopts the following technical scheme:

the measuring device with high stability according to the embodiment of the present invention includes a measuring device body including:

a base station;

the rigid coaxial assembly can be fixed on the base station, a first coaxial hole and a second coaxial hole are formed in the coaxial assembly, and the circle centers of the first coaxial hole and the second coaxial hole are located on the same straight line;

the sensor mechanism is connected with the coaxial assembly through the first coaxial hole and the second coaxial hole; the sensor mechanism comprises a sensor component and a first driving component, the first driving component is arranged on one side of the sensor component, and the first driving component is fixedly connected with the coaxial component; after the installation is finished, the circle center of the first coaxial hole, the circle center of the second coaxial hole and the central axis of the sensor assembly are collinear; the sensor assembly rotates around the central axis of the sensor assembly under the driving force of the first driving assembly so as to measure a workpiece to be measured.

Preferably, the sensor assembly comprises a sensor, a sensor fixing seat and a rotating shaft, the sensor is fixedly installed on the sensor fixing seat, one end of the sensor fixing seat is movably connected with the first driving assembly, the other end of the sensor fixing seat is fixedly connected with the rotating shaft, and the rotating shaft is matched with the inner diameter of the first coaxial hole or the second coaxial hole.

Preferably, a third coaxial hole and a fourth coaxial hole are arranged on the sensor fixing seat, and the circle centers of the third coaxial hole and the fourth coaxial hole are on the same straight line; and after the installation is finished, the third coaxial hole is collinear with the circle center of the first coaxial hole.

Preferably, a first limiting block is fixedly installed on the sensor fixing seat, a second limiting block and a third limiting block are fixedly installed on the coaxial assembly, and the second limiting block and the third limiting block are located at different positions; the second limiting block and the third limiting block stop the first limiting block from following the sensor fixing seat to perform rotary motion.

Preferably, a plurality of hollowed-out areas are further arranged on the coaxial assembly and the sensor fixing seat, and the hollowed-out areas are uniformly distributed.

Preferably, the base station comprises a horizontal base and a vertical base, and the horizontal base is fixedly connected with the vertical base; the sensor mechanism is located between the two vertical bases, and the coaxial assembly can be fixedly mounted on the vertical bases.

Preferably, the measuring equipment body further comprises a fixing component, the fixing component can be fixedly installed on the horizontal base, the fixing component is located below the sensor, and a workpiece to be measured is fixed on the upper surface of the fixing component.

Preferably, the measuring equipment body further comprises a lifting assembly, the lifting assembly comprises a first slide rail, a first slide block and a second driving assembly, the first slide rail and the second driving assembly are fixedly mounted on the base platform, and the first slide block is connected with the first slide rail in a sliding manner; the coaxial assembly is fixedly connected with the first sliding block, and the coaxial assembly and the sensor mechanism reciprocate along the first sliding rail direction along with the first sliding block under the driving force of the second driving assembly.

Preferably, the first coaxial hole and the second coaxial hole are integrally formed; the third coaxial hole and the fourth coaxial hole are integrally formed.

The invention also provides a method for installing the measuring equipment with high stability, which comprises the following steps:

penetrating a coaxial pin through a third coaxial hole, a first coaxial hole and a fifth coaxial hole in the first driving assembly and fixing the coaxial pin, so that the centers of circles of the third coaxial hole, the first coaxial hole and the fifth coaxial hole are positioned on the same straight line; the third coaxial hole, the first coaxial hole and the fifth coaxial hole have the same aperture;

fixedly connecting the sensor fixing seat, the first driving assembly and the coaxial assembly by using a fixing piece;

after the sensor fixing seat, the first driving assembly and the coaxial assembly are fixedly connected, the coaxial pin is detached; and the outer diameter of the coaxial pin is matched with the inner diameters of the third coaxial hole, the first coaxial hole and the fifth coaxial hole.

The technical scheme of the invention at least has one of the following beneficial effects:

according to the measuring equipment with high stability and the mounting method, the rigid coaxial assemblies are mounted on the two sides of the sensor assembly, and the coaxial assemblies ensure the coaxial stability of the sensor assembly when the sensor assembly rotates, so that the measuring precision of the measuring equipment is further improved; the mounting method of the measuring equipment ensures the coaxial precision among the sensor fixing seat, the first driving assembly and the coaxial assembly, and further ensures the measuring precision and stability of the measuring equipment body in the measuring process.

Drawings

FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic partial structure diagram according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a coaxial assembly according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of an embodiment of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4;

FIG. 6 is an enlarged view at C of FIG. 4;

FIG. 7 is an enlarged view at B in FIG. 4;

FIG. 8 is a partial schematic view of an embodiment of the present invention;

FIG. 9 is an exploded view of a portion of an embodiment of the present invention;

fig. 10 is a sectional view of a partial structure in an embodiment of the present invention.

Reference numerals:

1. a workpiece to be measured; 100. a measuring device body; 10. a coaxial assembly; 110. a first coaxial hole; 120. a second coaxial bore; 130. a first hollowed-out region; 140. a second limiting block; 150. a third limiting block; 20. a sensor mechanism; 210. a sensor holder; 211. a second hollowed-out region; 212. a third coaxial hole; 213. a first stopper; 220. a first drive assembly; 221. a fifth coaxial hole; 230. a sensor; 231. a balancing weight; 240. a rotating shaft; 30. a base station; 311. a first vertical base; 312. a second vertical base; 320. a horizontal base; 40. a lifting assembly; 410. a first slider; 420. a first slide rail; 50. coaxial pins; 510. a coaxial portion; 520. a fixed part; 610. a first direction transfer assembly; 620. a second direction transfer assembly; 630. a rotation adjustment assembly; 70. and (6) fixing the assembly.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

In the prior art, generally, a workpiece to be measured is measured through the matched motion of a sensor with large fixed mass, but the mode causes the occupied space of the whole machine table to be large, and multi-angle measurement cannot be realized. In order to reduce the occupation space of the whole machine and realize multi-angle measurement, the product is measured by the rotary sensor, but because the weight of the sensor is large, the stability and the coaxial precision of the rotary shafts on two sides are difficult to guarantee in the rotating process.

In order to solve the above problems, the present invention provides a measuring device with high stability, in which rigid coaxial assemblies are mounted on two sides of a sensor assembly, and the coaxial assemblies ensure the coaxial stability of the sensor assembly when the sensor assembly rotates, so as to further improve the measurement accuracy of the measuring device.

First, a measuring apparatus having high stability according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Specifically, as shown in fig. 1 to 10, the measuring apparatus with high stability provided by the present invention includes a measuring apparatus body 100, the measuring apparatus body 100 includes a base 30, a coaxial assembly 10, and a sensor mechanism 20; wherein the content of the first and second substances,

as shown in fig. 3, the coaxial component 10 is shown as a coaxial component 10, the coaxial component 10 is provided with a first coaxial hole 110, a second coaxial hole 120 and a plurality of first hollow areas 130, the rigid coaxial component 10 can be fixedly mounted on the base 30 and can also perform a lifting motion relative to the base 30, and the centers of the first coaxial hole 110 and the second coaxial hole 120 are located on the same straight line. The first coaxial hole 110 and the second coaxial hole 120 are preferably integrally formed, so as to ensure that the centers of the first coaxial hole 110 and the second coaxial hole 120 are on the same straight line. The first hollow area 130 on the coaxial assembly 10 is used to reduce its own weight to reduce the pressure of the driving assembly when the coaxial assembly 10 performs the lifting motion. The diameters of the first coaxial hole 110 and the second coaxial hole 120 may be the same or different, and are set according to specific requirements.

As shown in fig. 4, the first coaxial hole 110 and the second coaxial hole 120 are respectively connected to both sides of the sensor mechanism 20, and the coaxial assembly 10 is connected to both sides of the sensor mechanism 20 through the first coaxial hole 110 and the second coaxial hole 120. The sensor mechanism 20 comprises a sensor component and a first driving component 220, the first driving component 220 is installed at one side of the sensor component, and the first driving component 220 is fixedly connected with the coaxial component 10; after the installation is completed, the centers of the first coaxial hole 110 and the second coaxial hole 120 are collinear with the central axis of the sensor assembly; the sensor assembly performs a rotational movement around its central axis under the driving force of the first driving assembly 220 to measure the workpiece 1 to be measured. The first drive assembly 220 is preferably, but not limited to, a DD motor. The first driving assembly 220 is installed at one side of the sensor assembly, and the mass of the sensor assembly is large, so that the coaxial precision is difficult to ensure in the process that the first driving assembly 220 drives the sensor assembly to rotate. The coaxial assemblies 10 are fixedly mounted on two sides of the sensor assembly, the coaxial assemblies 10 made of rigid materials enable the sensor assembly to rotate around the central axis of the sensor assembly all the time in the rotating process, the measuring stability and the measuring precision of the measuring equipment body 100 are improved, and the rigid coaxial assemblies 10 are preferably made of metal materials.

In an embodiment of the present invention, as shown in fig. 10, fig. 10 is a cross-sectional view of the coaxial assembly 10, the rotating shaft 240, the first driving assembly 220 and the sensor fixing base 210 after the installation; the sensor assembly comprises a sensor 230, a sensor fixing seat 210 and a rotating shaft 240, wherein the sensor 230 is fixedly installed on the sensor fixing seat 210, one end of the sensor fixing seat 210 is fixedly connected with the first driving assembly 220, the other end of the sensor fixing seat 210 is fixedly connected with the rotating shaft 240, and the rotating shaft 240 is matched with the inner diameter of the first coaxial hole 110 or the second coaxial hole 120. The sensor 230 is preferably a linear confocal sensor suitable for high precision and continuous non-contact measurement, although the sensor 230 is not limited to a linear confocal sensor. A third coaxial hole 212 and a fourth coaxial hole (not shown in the figure) are arranged on the sensor fixing seat 210, and the circle centers of the third coaxial hole 212 and the fourth coaxial hole are on the same straight line; after the installation is completed, the third coaxial hole 212 is collinear with the center of the first coaxial hole 110. The center of the third coaxial hole 212, the center of the first coaxial hole 110, the center of the rotating shaft 240 and the central axis of the sensor 230 are collinear. The sensor fixing base 210 is provided with a plurality of second hollow areas 211, and the second hollow areas 211 and the first hollow areas 130 on the coaxial component 10 have the same function and are used for reducing the overall mass of the measuring equipment. As shown in fig. 8, the sensor assembly further includes a weight 231, and the weight 231 is mounted on the sensor holder 210, so that the center axis of rotation of the sensor 230 is adjusted to be collinear with the center of the first coaxial hole 110 by mounting the weight 231.

In an embodiment of the present invention, as shown in fig. 8, a first stopper 213 is fixedly installed on the sensor fixing seat 210, a second stopper 140 and a third stopper 150 are fixedly installed on the coaxial assembly 10, and the second stopper 140 and the third stopper 150 are located at different positions; the second stopper 140 and the third stopper 150 block the first stopper 213 from rotating along with the sensor holder 210. The first stopper 213, the second stopper 140 and the third stopper 150 define an angular range in which the sensor 230 rotates, and the size of the angular range is set according to specific requirements. The arrangement of the first stopper 213, the second stopper 140 and the third stopper 150 can prevent the sensor assembly from colliding with the coaxial assembly 10 during the rotation process, thereby preventing the sensor 230 from being damaged.

In an embodiment of the present invention, the base platform 30 includes a horizontal base 320 and a vertical base, the horizontal base 320 is fixedly connected to the vertical base, and the vertical base includes a first vertical base 311 and a second vertical base 312; the sensor mechanism 20 is located between a first vertical base 311 and a second vertical base 312, on which the coaxial assembly 10 can be fixedly mounted. As shown in fig. 4, the first vertical base 311 and the second vertical base 312 are fixedly mounted on two side edges of the horizontal base 320, and the sensor mechanism 20 and the coaxial assembly 10 are located between the two vertical bases. The horizontal base 320 can be provided with a fixing assembly 70, and the fixing assembly 70 can be fixedly arranged on the horizontal base 320 and can also move relative to the horizontal base 320. The fixing member 70 is below the sensor mechanism 20, and the workpiece 1 to be measured is fixed to the upper surface of the fixing member 70. Install vacuum extraction subassembly and a plurality of sucking disc in the fixed subassembly 70, after the work piece 1 that awaits measuring is placed on fixed subassembly 70, vacuum extraction subassembly evacuation makes a plurality of sucking discs fix the absorption with the work piece 1 that awaits measuring.

Further, as shown in fig. 4 and 7, the fixing assembly 70 is movable relative to the horizontal base 320 by a transfer adjusting mechanism, which includes a first direction transfer assembly 610, a second direction transfer assembly 620, and a rotation adjusting assembly 630, wherein the first direction transfer assembly 610 is perpendicular to the transfer direction of the second direction transfer assembly 620, the rotation adjusting assembly 630 makes the fixing assembly 70 perform an angular adjustment in the horizontal direction, and the first direction transfer assembly 610, the second direction transfer assembly 620, and the rotation adjusting assembly 630 satisfy an adjustment of an arbitrary coordinate of the workpiece 1 to be measured on the horizontal base 320, so as to improve the measurement accuracy of the workpiece 1 to be measured.

In an embodiment of the present invention, as shown in fig. 4 and fig. 6, the measuring apparatus body 100 further includes a lifting assembly 40, the lifting assembly 40 includes a first slide rail 420, a first slider 410, and a second driving assembly, the first slide rail 420 and the second driving assembly are fixedly mounted on the base 30, and the first slider 410 is slidably connected to the first slide rail 420; the coaxial assembly 10 is fixedly connected to the first slider 410, and the coaxial assembly 10 and the sensor mechanism 20 reciprocate along the first slide rail 420 direction along with the first slider 410 under the driving force of the second driving assembly. The second drive assembly is preferably a linear motor, which is highly accurate and is not limited to a linear motor. The coaxial assembly 10 is fixedly connected to the first slider 410 through a connecting member. The measuring equipment body 100 preferably comprises two lifting assemblies 40, the two lifting assemblies 40 are respectively installed on the first vertical base 311 and the second vertical base 312, and the sensor mechanism 20 and the coaxial assembly 10 are driven to reciprocate in the vertical direction through double drives, so that different workpieces 1 to be measured are compatible, the compatibility of the measuring equipment body 100 is improved, and the measuring range of the measuring equipment is enlarged.

The present invention also provides a method for installing a measuring apparatus having high stability, as shown in fig. 9 and 10, comprising the steps of:

firstly, penetrating the coaxial pin 50 through the third coaxial hole 212, the first coaxial hole 110 and the fifth coaxial hole 221 on the first driving assembly 220 and fixing the coaxial pin so that the centers of the third coaxial hole 212, the first coaxial hole 110 and the fifth coaxial hole 221 are positioned on the same straight line; the third coaxial hole 212, the first coaxial hole 110 and the fifth coaxial hole 221 have the same hole diameter.

And secondly, fixedly connecting the sensor fixing seat 210, the first driving assembly 220 and the coaxial assembly 10 by using a fixing member.

Thirdly, after the sensor fixing seat 210, the first driving assembly 220 and the coaxial assembly 10 are fixedly connected, the coaxial pin 50 is removed; wherein the outer diameter of the coaxial pin 50 matches the inner diameter of the third coaxial bore 212, the first coaxial bore 110 and the fifth coaxial bore 221. The coaxial pin 50 is preferably integrally formed, and the coaxial pin 50 is utilized during installation to improve the coaxial accuracy of the sensor mount 210, the DD motor, and the coaxial assembly 10. The coaxial pin 50 includes a coaxial shaft portion 510 and a fixing portion 520, and after the coaxial shaft portion 510 penetrates through the centers of the third coaxial hole 212, the first coaxial hole 110 and the fifth coaxial hole 221, the fixing portion 520 fixes the coaxial pin 50 and then fixedly connects the sensor fixing base 210, the first driving assembly 220 and the coaxial assembly 10. After the sensor fixing seat 210, the first driving component 220 and the coaxial component 10 are fixedly mounted, the coaxial pin 50 is removed, so that the coaxial precision among the sensor fixing seat 210, the first driving component 220 and the coaxial component 10 is prevented from being reduced due to external force in the mounting process. The mounting method ensures the coaxial precision among the sensor fixing seat 210, the first driving component 220 and the coaxial component 10, and further ensures the measurement precision of the measuring equipment body 100 in the measurement process.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A measuring device with high stability, characterized by comprising a measuring device body (100), the measuring device body (100) comprising:

a base (30);

the rigid coaxial assembly (10) can be fixed on the base platform (30), a first coaxial hole (110) and a second coaxial hole (120) are formed in the coaxial assembly (10), and the circle centers of the first coaxial hole (110) and the second coaxial hole (120) are located on the same straight line;

a sensor mechanism (20), said sensor mechanism (20) being connected to said coaxial assembly (10) through said first coaxial bore (110) and a second coaxial bore (120); the sensor mechanism (20) comprises a sensor component and a first driving component (220), the first driving component (220) is arranged on one side of the sensor component, and the first driving component (220) is fixedly connected with the coaxial component (10); after the installation is finished, the circle center of the first coaxial hole (110), the circle center of the second coaxial hole (120) and the central axis of the sensor assembly are collinear; the sensor component rotates around the central axis of the sensor component under the driving force of the first driving component (220) so as to measure the workpiece (1) to be measured;

the sensor assembly comprises a sensor (230), a sensor fixing seat (210) and a rotating shaft (240), wherein the sensor (230) is fixedly installed on the sensor fixing seat (210), one end of the sensor fixing seat (210) is movably connected with a first driving assembly (220), the other end of the sensor fixing seat is fixedly connected with the rotating shaft (240), and the rotating shaft (240) is matched with the inner diameter of the first coaxial hole (110) or the second coaxial hole (120).

2. The measuring device with high stability according to claim 1, wherein a third coaxial hole (212) and a fourth coaxial hole are arranged on the sensor fixing seat (210), and the centers of the third coaxial hole (212) and the fourth coaxial hole are on the same straight line; after the installation is finished, the centers of the third coaxial hole (212) and the first coaxial hole (110) are collinear.

3. The measuring device with high stability according to claim 2, wherein a first stopper (213) is fixedly installed on the sensor fixing seat (210), a second stopper (140) and a third stopper (150) are fixedly installed on the coaxial assembly (10), and the second stopper (140) and the third stopper (150) are located at different positions; the second limiting block (140) and the third limiting block (150) block the first limiting block (213) from rotating along with the sensor fixing seat (210).

4. The measuring device with high stability according to claim 1, wherein a plurality of hollowed-out areas are further disposed on the coaxial assembly (10) and the sensor holder (210), and the hollowed-out areas are uniformly distributed.

5. The measuring device with high stability according to claim 1, wherein the base platform (30) comprises a horizontal base (320) and a vertical base, the horizontal base (320) is fixedly connected with the vertical base, the vertical base comprises a first vertical base (311) and a second vertical base (312), the sensor mechanism (20) is located between the first vertical base (311) and the second vertical base (312), and the coaxial assembly (10) is fixedly mounted on the first vertical base (311) and the second vertical base (312).

6. The measuring apparatus with high stability according to claim 5, wherein the measuring apparatus body (100) further comprises a fixing assembly (70), the fixing assembly (70) is fixedly installed on the horizontal base (320), the fixing assembly (70) is located below the sensor (230), and the workpiece (1) to be measured is fixed on the upper surface of the fixing assembly (70).

7. The measuring device with high stability according to claim 1, wherein the measuring device body (100) further comprises a lifting assembly (40), the lifting assembly (40) comprises a first slide rail (420), a first slide block (410) and a second driving assembly, the first slide rail (420) and the second driving assembly are fixedly mounted on the base (30), and the first slide block (410) is slidably connected with the first slide rail (420); the coaxial assembly (10) is fixedly connected with the first sliding block (410), and the coaxial assembly (10) and the sensor mechanism (20) reciprocate along the direction of the first sliding rail (420) along with the first sliding block (410) under the driving force of the second driving assembly.

8. The measuring device with high stability according to claim 2, characterized in that said first coaxial hole (110) is integrally formed with said second coaxial hole (120); the third coaxial hole (212) and the fourth coaxial hole are integrally formed.

9. A method of mounting a measuring device having high stability, comprising the steps of:

the coaxial pin (50) penetrates through a third coaxial hole (212), a first coaxial hole (110) and a fifth coaxial hole (221) in a first driving assembly (220) and is fixed, so that the centers of the third coaxial hole (212), the first coaxial hole (110) and the fifth coaxial hole (221) are located on the same straight line; the third coaxial hole (212), the first coaxial hole (110) and the fifth coaxial hole (221) are the same in aperture;

fixedly connecting the sensor fixing seat (210), the first driving assembly (220) and the coaxial assembly (10) by using a fixing part;

after the sensor fixing seat (210), the first driving assembly (220) and the coaxial assembly (10) are fixedly connected, the coaxial pin (50) is removed; wherein the outer diameter of the coaxial pin (50) matches the inner diameter of the third coaxial bore (212), the first coaxial bore (110) and the fifth coaxial bore (221).