CN213004440U - Automatic grinding and resistance-adjusting device for strain gauge - Google Patents
Automatic grinding and resistance-adjusting device for strain gauge Download PDFInfo
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- CN213004440U CN213004440U CN202021334328.4U CN202021334328U CN213004440U CN 213004440 U CN213004440 U CN 213004440U CN 202021334328 U CN202021334328 U CN 202021334328U CN 213004440 U CN213004440 U CN 213004440U
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- polishing
- strain gauge
- sanding
- abrasive paper
- paper tape
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Abstract
The utility model relates to an automatic trimming device that polishes of strainometer, which comprises a frame, the frame sets up the workstation, still includes: the strain gauge array mounting bottom plate is arranged on the workbench and used for placing the strain gauge array; the sanding mechanism comprises a sanding mechanism mounting plate, the sanding mechanism mounting plate is provided with a sanding belt and a sanding pressure head, the tip end of the sanding pressure head faces the strainometer array mounting base plate, the sanding belt is output by the unwinding mechanism, wound around the tip end of the sanding pressure head and finally retracted by the winding mechanism, and the winding mechanism is driven by a corresponding motor; the polishing liquid output mechanism is arranged on the polishing mechanism mounting plate and is attached to an abrasive paper tape between the unwinding mechanism and the polishing pressure head; the resistance measuring mechanism is used for contacting the corresponding strain gauge and acquiring the resistance value of the strain gauge; and the driving mechanism is used for driving the abrasive paper tape polishing mechanism or the resistance measuring mechanism to move.
Description
Technical Field
The utility model relates to a transfer and hinder the device field, specifically indicate to have an automatic accent of polishing of strainometer hinders device.
Background
The strain gauge is a very widely applied precision detection sensing unit in the field of processing and manufacturing at present, and is widely applied to the fields of physical quantity measurement, environmental quantity control, intelligent identification and the like. Referring to fig. 10, a strain gauge is generally composed of a sensitive grating, leads, adhesive, a substrate, and a cover layer.
In the production of strain gauges, referring to fig. 9, an array type strain gauge array is generally produced. The resistance value of each strain gauge of the strain gauge array produced under the current production and manufacturing process cannot be accurately controlled, the resistance value can only be adjusted to a required value by a later-stage manual polishing or machine polishing mode, a cotton stick is sleeved on a small motor in the traditional manual polishing mode, after a proper amount of polishing liquid is adhered, the cotton stick is polished while being tested by a test fixture provided with two probes, the manual operation mode has the defects of slow production efficiency, easiness in polishing, dredging and the like, residual cotton scraps are hung on a silk screen in the polishing process, and the cleaning time is increased in the subsequent cleaning process; the machine mode of polishing is then through the rotation of motor drive polishing head, dips in the polishing liquid at the polishing head and rotates the strainometer and polish, because the rotation rate of motor is very fast, the polishing liquid splashes easily, needs the manual work to clean after polishing.
The automatic trimming device that polishes of strainometer to the problem design that foretell prior art exists is the utility model discloses the purpose of research.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides an automatic trimming that polishes of strainometer is put, can effectively solve the problem that above-mentioned prior art exists.
The technical scheme of the utility model is that:
the utility model provides an automatic trimming that polishes of strainometer hinders device, includes the frame, the frame sets up the workstation, still includes:
the strain gauge array mounting bottom plate is arranged on the workbench and used for placing the strain gauge array; and
the sanding mechanism comprises a sanding mechanism mounting plate, the sanding mechanism mounting plate is provided with a sanding belt and a sanding pressure head, the tip of the sanding pressure head faces the strainometer array mounting base plate, the sanding belt is output by the unwinding mechanism, wound around the tip of the sanding pressure head and finally retracted by the winding mechanism, and the winding mechanism is driven by a corresponding motor;
the polishing liquid output mechanism is arranged on the polishing mechanism mounting plate and is attached to an abrasive paper tape between the unwinding mechanism and the polishing pressure head;
the resistance measuring mechanism is used for contacting the corresponding strain gauge and acquiring the resistance value of the strain gauge;
the driving mechanism is used for driving the abrasive paper tape polishing mechanism or the resistance measuring mechanism to move;
and the control system is connected with each mechanism and is used for controlling each mechanism to work in a coordinated manner.
Further, the resistance measuring mechanism comprises a pair of probes, the probes are connected with a resistance measuring circuit, and the probes are used for contacting two pins of the strain gauge.
The system further comprises a video acquisition mechanism, wherein the video acquisition mechanism comprises a camera and is used for acquiring strain gauge array image information of the strain gauge array mounting base plate, transmitting the strain gauge array image information to the control system and analyzing the strain gauge array image information by the control system to obtain position information of each strain gauge.
Furthermore, the strain gauge array mounting base plate is driven by an electric rotary cylinder, and the control system controls the electric rotary cylinder to rotate through the position information, so that the angle between the strain gauge array mounting base plate and the polishing pressure head is adjusted, and the wire grid direction of the strain gauge is the same as the moving direction of the abrasive paper tape.
Further, the polishing solution output mechanism comprises a polishing solution box for containing polishing materials, a sponge is arranged in the polishing solution box, the top end of the sponge protrudes out of the polishing solution box, and the sponge is in contact with the abrasive paper tape.
Furthermore, the grinding mechanism mounting plate is provided with a plurality of guide rollers, and the abrasive paper tape is wound on the guide rollers.
Furthermore, at least one guide roller is arranged at the same height with the polishing liquid output mechanism and is arranged on one side of the polishing liquid output mechanism close to the polishing pressure head.
Furthermore, the polishing mechanism mounting plate is provided with an adjusting pinch roller set, the adjusting pinch roller set comprises an upper pinch roller and a lower pinch roller which are correspondingly arranged up and down, the lower pinch roller and the polishing liquid output mechanism are arranged at the same height, the lower pinch roller is arranged on one side of the polishing liquid output mechanism far away from the polishing pinch roller, and the distance between the upper pinch roller and the lower pinch roller is adjustable.
Further, the abrasive paper tape is wound by the upper pressing wheel, and the upper pressing wheel is used for adjusting the tension of the abrasive paper tape;
further, actuating mechanism contains abrasive paper tape grinding machanism actuating mechanism and resistance measuring mechanism actuating mechanism, abrasive paper tape grinding machanism with resistance measuring mechanism actuating mechanism all contains: an X-axis motion device, a Y-axis motion device and a Z-axis motion device.
Accordingly, the present invention provides the following effects and/or advantages:
1) the utility model changes the traditional working method of polishing the strain gauge by polishing cotton/rod, drives the sand paper belt polishing mechanism and the resistance measuring mechanism to align one strain gauge by the driving mechanism, the probe of the resistance measuring mechanism contacts two pins of the strain gauge, the motor of the sand paper polishing mechanism drives the winding mechanism, thereby driving the sand paper belt to move; the abrasive paper tape is contacted with the polishing liquid output mechanism in the moving process, and part of polishing liquid is adhered to the surface of the abrasive paper tape; the abrasive paper belt is in contact with the strain gauge at the tip of the polishing pressure head, and the driving mechanism drives the abrasive paper belt polishing mechanism to reciprocate along the length direction of the wire grid, so that the strain gauge is polished. Therefore, the abrasive paper tape stained with the polishing liquid is driven to polish the strain gauge effectively in a horizontal moving mode, the defect that the polishing liquid splashes in the traditional method is overcome, the polishing quality is greatly improved, the labor intensity of workers is reduced, and the polishing quality and the polishing capacity are not influenced by the proficiency of manual skills.
2) The utility model discloses a bottom of strainometer array mounting plate sets up electronic rotatory jar, and screen acquisition mechanism is looked in the cooperation, gathers strainometer array mounting plate's strainometer array image information transmits control system, and passes through control system analyzes the positional information who obtains each strainometer. The strain gauge array mounting base plate is driven by an electric rotating cylinder, the control system controls the electric rotating cylinder to rotate through the position information, and the control system is used for adjusting the angle between the strain gauge array mounting base plate and the polishing pressure head to enable the wire grid direction of the strain gauge to be the same as the moving direction of the abrasive paper tape. Therefore, the moving direction of the polishing pressure head is the same as the direction of the wire grid, and the polishing efficiency is improved. Compared with the traditional polishing mode, the old polishing mode adopts the cotton stick to be stained with and get a proper amount of polishing liquid to polish, frequently changes the cotton stick, produces a large amount of consumptive materials easily. And residual cotton scraps are hung on the wire grids in the polishing process, and the cleaning time is increased in the subsequent cleaning process. The novel sanding belt has long sanding time and less material consumption.
3) In the polishing process, the resistance measuring mechanism continuously detects the resistance value of the strain gauge, and when the resistance value of the strain gauge reaches the required range, the electric control system immediately stops polishing, so that the polishing precision can be effectively improved.
4) In the traditional method, cotton sticks or felts are used, so that the grinding powder is soaked and filled in the surface and gaps of the cotton sticks or felts, and is driven by a high-speed motor to rotate. Because the cotton stick or the wool felt belongs to soft materials, when the cotton stick or the wool felt rotates to contact with strain gauges, the bottom of the cotton stick or the wool felt deforms and deforms along with the surface state of the strain gauges, the sensitive grid and the substrate material are polished simultaneously, and the joint part of the sensitive grid and the substrate is easily polished, so that the sensitive grid and the substrate are easily attached to loose, or residual stress is brought. The utility model discloses an abrasive paper be rectangular form, the width looks adaptation of its width and strainometer to the width of abrasive paper tape is steerable, through the abrasive paper tape of cutting corresponding width, thereby standardized abrasive paper tape. And the sand paper is driven by the driving mechanism, the movement direction of the sand paper is the same as the length direction of the wire grid of the strain gauge, and only the sensitive grid is accurately polished according to the difference of the shape and the functional area of the strain gauge, so that the quality stability of the strain gauge is improved.
5) The utility model discloses an go up the pinch roller and can reciprocate, through adjusting the position of going up the pinch roller to the tensile force of control abrasive paper tape, the disappearance condition such as skid when guaranteeing the abrasive paper tape to remove.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of fig. 1.
Fig. 3 is a schematic structural diagram of the abrasive paper belt grinding mechanism.
Fig. 4 is a schematic structural diagram of the resistance measuring mechanism.
Fig. 5 is a schematic structural view of a strain gauge array mounting base plate.
Fig. 6 is a schematic structural view of a polishing liquid output mechanism.
Fig. 7 is a sectional view a-a of fig. 6.
Fig. 8 is a schematic structural view of the driving mechanism.
FIG. 9 is a schematic view of a strain gage array.
Fig. 10 is a schematic view of a strain gauge.
Fig. 11 is a working state diagram of the present invention.
FIG. 12 is a diagram of the operation of the strain gauge and the sandpaper tape.
Fig. 13 is an enlarged view of a portion B of fig. 12.
Detailed Description
To facilitate understanding of those skilled in the art, the structure of the present invention will now be described in further detail with reference to the following examples:
referring to fig. 1-8, an automatic grinding and resistance-adjusting device for a strain gauge comprises a frame 1, wherein the frame 1 is provided with a workbench: further comprising:
the strain gauge array mounting base plate 2 is arranged on the workbench and used for placing strain gauge arrays, in the embodiment, through holes are formed in the strain gauge array mounting base plate 2 corresponding to the positions of each strain gauge in the strain gauge arrays, and meanwhile, the through holes are communicated to corresponding negative pressure generators and used for adsorbing the strain gauge arrays;
the abrasive paper belt polishing mechanism 3 comprises a polishing mechanism mounting plate 301, the polishing mechanism mounting plate 301 is provided with an abrasive paper belt 303 and a polishing pressure head 302, the tip of the polishing pressure head 302 faces the strain gauge array mounting base plate 2, the abrasive paper belt 303 is output by an unwinding mechanism (not shown), is wound around the tip of the polishing pressure head 302, and is finally retracted by a winding mechanism (304), and the winding mechanism 304 is driven by a corresponding motor 305;
the polishing liquid output mechanism 4 is arranged on the polishing mechanism mounting plate 301 and is attached to an abrasive paper tape 303 between the unwinding mechanism and the polishing pressure head 302;
the resistance measuring mechanism 5 is used for contacting the corresponding strain gauge and acquiring the resistance value of the strain gauge;
the driving mechanism 6 is used for driving the abrasive paper tape polishing mechanism 2 or the resistance measuring mechanism 4 to move;
and the control system (not shown) is connected with each mechanism and is used for controlling each mechanism to work in a coordinated manner.
Further, the resistance measuring mechanism 5 comprises a pair of probes 501, the probes 501 are connected with a resistance measuring circuit, and the probes 501 are used for contacting two pins of the strain gauge.
Further, the device also comprises a video acquisition mechanism 7, wherein the video acquisition mechanism 7 comprises a camera and is used for acquiring strain gauge array image information of the strain gauge array mounting base plate 2, transmitting the strain gauge array image information to the control system and analyzing the strain gauge array image information by the control system to obtain position information of each strain gauge. The strain gauge array mounting base plate 2 is driven by an electric rotating cylinder 201, the control system controls the electric rotating cylinder 201 to rotate through the position information, and the control system is used for adjusting the angle between the strain gauge array mounting base plate 201 and the polishing pressure head 302 to enable the wire grid direction of the strain gauge to be the same as the moving direction of the abrasive paper tape 303.
Further, the polishing solution output mechanism 4 comprises a polishing solution box 401 for containing polishing materials, a sponge 402 is arranged in the polishing solution box 401, the top end of the sponge 402 protrudes out of the polishing solution box 401, and the sponge 402 is arranged in contact with the abrasive paper tape 303.
Further, the sanding mechanism mounting plate 301 is provided with a plurality of guide rollers 306, and the abrasive paper tape 303 is wound around the guide rollers 306. At least one guide roller 306 is disposed at the same height as the polishing liquid output mechanism 4, and is disposed on one side of the polishing liquid output mechanism 4 close to the polishing pressure head 302. Grinding machanism mounting panel 301 sets up adjustment pinch roller set 307, adjustment pinch roller set 307 contains the last pinch roller 3071 and the lower pinch roller 3072 that correspond the setting from top to bottom, lower pinch roller 3072 with polish liquid output mechanism 4 and wait high setting, lower pinch roller 3072 set up in polish liquid output mechanism 4 and keep away from one side of pressure head 302 polishes, go up pinch roller 3071 with distance between the pinch roller 3072 is adjustable. The abrasive paper tape 303 is wound by the upper pinch roller 3071, and the upper pinch roller 3071 is used for adjusting the tension of the abrasive paper tape 303;
there are various ways to realize the up-and-down movable setting of the upper press wheel 3071. For example, in one embodiment, the upper puck 3071 is disposed in one of the through holes by providing the grinding mechanism mounting plate 301 with a plurality of through holes arranged longitudinally, thereby achieving an up-down arrangement; or in another embodiment, the grinding mechanism mounting plate 301 is provided with a longitudinal sliding groove, and the upper pressing wheel 3071 is locked and arranged at a certain height of the sliding groove. The tension of the abrasive paper tape 303 is controlled by adjusting the position of the upper pressure wheel 3071, so that the conditions of slipping and the like are avoided when the abrasive paper tape 303 moves.
Further, the driving mechanism 6 includes an abrasive paper belt polishing mechanism driving mechanism 601 and a resistance measuring mechanism driving mechanism 602, and both the abrasive paper belt polishing mechanism driving mechanism 601 and the resistance measuring mechanism driving mechanism 602 include: an X-axis motion device, a Y-axis motion device and a Z-axis motion device. Specifically, the driving mechanism 601 of the abrasive paper belt polishing mechanism of this embodiment is: the first lead screw 6011 and the slide rail 6012, the slide rail 6012 is parallel to the first lead screw 6011, the first lead screw 6011 and the slide rail 6012 are respectively connected to a first moving base 6013, a second lead screw 6014 is connected between the first moving bases 6013, and the first lead screw 6011 drives the second lead screw 6014 to move on the X axis through the slide rail 6012 and the first moving base 6013; the second lead screw 6014 is connected to a second moving base 6015, and the second lead screw 6014 drives the second moving base 6015 to move on the Y axis; the second moving seat 6015 is fixedly connected to an air cylinder 6016, and a piston rod of the air cylinder 6016 is connected to the polishing mechanism driving mechanism 601, so as to drive the polishing mechanism driving mechanism 601 to move on the Z axis. The structure of the resistance measuring mechanism driving mechanism 602 is similar to that of the abrasive paper belt grinding mechanism driving mechanism 601, and will not be described here.
The working principle is as follows: with reference to figures 11-13 of the drawings,
firstly, the strainometer array is placed into the strainometer array mounting bottom plate 2, the negative pressure generator is started, the strainometer array is adsorbed on the strainometer array mounting bottom plate 2, and the strainometer is enabled not to change in position when the strainometer moves or is polished.
Then, the video acquisition mechanism 7 and the electric rotary cylinder 201 are started, an output signal of the video acquisition mechanism 7 is connected with a control system, the control system can calculate the position of each strain gauge through a shot image, and the control system can also control the electric rotary cylinder 201 at the bottom to automatically adjust to enable the wire grids of the strain gauges to be in the same direction as the movement direction of the abrasive paper tape 303.
The driving mechanism 6 drives the abrasive paper belt polishing mechanism 3 and the resistance measuring mechanism 5 to align with one strain gauge, a probe 501 of the resistance measuring mechanism 5 contacts two pins of the strain gauge, and a motor 305 of the abrasive paper polishing mechanism 3 drives a winding mechanism 304, so that the abrasive paper belt 303 is driven to move. The abrasive paper tape 303 is in contact with the polishing solution output mechanism 4 in the movement process, and part of the polishing solution is adhered to the surface of the abrasive paper tape 303. The abrasive paper tape 303 contacts the strain gage at the tip of the grinding ram 302 and the drive mechanism drives the abrasive paper tape grinding mechanism 3 to reciprocate along the length of the wire grid to grind the strain gage. After a certain time, the motor drives the take-up mechanism 304 to retrieve the sandpaper strip for a distance, thereby allowing a new sandpaper strip 303 to replace the worn sandpaper strip 303.
In the polishing process, the resistance measuring mechanism 5 continuously detects the resistance value of the strain gauge, when the resistance value of the strain gauge reaches the required range, the electric control system immediately stops polishing, and the driving mechanism 6 is driven to align the abrasive paper tape polishing mechanism 3 and the resistance measuring mechanism 5 to the next strain gauge.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made within the scope of the claims of the present invention should belong to the scope of the present invention.
Claims (8)
1. The utility model provides an automatic trimming that polishes of strainometer hinders device, includes the frame, the frame sets up workstation, its characterized in that: further comprising:
the strain gauge array mounting bottom plate is arranged on the workbench and used for placing the strain gauge array; and
the sanding mechanism comprises a sanding mechanism mounting plate, the sanding mechanism mounting plate is provided with a sanding belt and a sanding pressure head, the tip of the sanding pressure head faces the strainometer array mounting base plate, the sanding belt is output by the unwinding mechanism, wound around the tip of the sanding pressure head and finally retracted by the winding mechanism, and the winding mechanism is driven by a corresponding motor;
the polishing liquid output mechanism is arranged on the polishing mechanism mounting plate and is attached to an abrasive paper tape between the unwinding mechanism and the polishing pressure head;
the resistance measuring mechanism is used for contacting the corresponding strain gauge and acquiring the resistance value of the strain gauge and comprises a pair of probes, the probes are connected with a resistance measuring circuit, and the probes are used for contacting two pins of the strain gauge;
the driving mechanism is used for driving the abrasive paper tape polishing mechanism or the resistance measuring mechanism to move;
the control system is connected with each mechanism and is used for controlling each mechanism to work coordinately;
and the video acquisition mechanism comprises a camera and is used for acquiring strain gauge array image information of the strain gauge array mounting base plate, transmitting the strain gauge array image information to the control system and analyzing the strain gauge array image information by the control system to obtain the position information of each strain gauge.
2. The automatic grinding and resistance-adjusting device for the strain gauges as claimed in claim 1, wherein: the strain gauge array mounting base plate is driven by an electric rotating cylinder, the control system controls the electric rotating cylinder to rotate through the position information, and the control system is used for adjusting the angle between the strain gauge array mounting base plate and the polishing pressure head to enable the wire grid direction of the strain gauge to be the same as the moving direction of the abrasive paper tape.
3. The automatic grinding and resistance-adjusting device for the strain gauges as claimed in claim 1, wherein: the polishing solution output mechanism comprises a polishing solution box used for containing polishing materials, a sponge is arranged in the polishing solution box, the top end of the sponge protrudes out of the polishing solution box, and the sponge is in contact with the abrasive paper tape.
4. The automatic grinding and resistance-adjusting device for the strain gauges as claimed in claim 1, wherein: the grinding mechanism mounting plate is provided with a plurality of guide rollers, and the abrasive paper tape is wound on the guide rollers.
5. The automatic grinding and resistance-adjusting device for the strain gauges as claimed in claim 4, wherein: at least one guide roller is arranged at the same height with the polishing liquid output mechanism and is arranged on one side of the polishing liquid output mechanism close to the polishing pressure head.
6. The automatic grinding and resistance-adjusting device for the strain gauges as claimed in claim 5, wherein: the polishing mechanism mounting plate is provided with an adjusting pinch roller set, the adjusting pinch roller set comprises an upper pinch roller and a lower pinch roller which are arranged in an up-down corresponding mode, the lower pinch roller and the polishing liquid output mechanism are arranged at the same height, the lower pinch roller is arranged on one side, away from the polishing pinch roller, of the polishing liquid output mechanism, and the distance between the upper pinch roller and the lower pinch roller is adjustable.
7. The automatic grinding and resistance-adjusting device for the strain gauges as claimed in claim 6, wherein: the abrasive paper tape is wound by the upper pressing wheel, and the upper pressing wheel is used for adjusting the tension of the abrasive paper tape.
8. The automatic grinding and resistance-adjusting device for the strain gauges as claimed in claim 1, wherein: actuating mechanism contains abrasive paper tape grinding machanism actuating mechanism and resistance measuring mechanism actuating mechanism, abrasive paper tape grinding machanism with resistance measuring mechanism actuating mechanism all contains: an X-axis motion device, a Y-axis motion device and a Z-axis motion device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021334328.4U CN213004440U (en) | 2020-07-09 | 2020-07-09 | Automatic grinding and resistance-adjusting device for strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021334328.4U CN213004440U (en) | 2020-07-09 | 2020-07-09 | Automatic grinding and resistance-adjusting device for strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213004440U true CN213004440U (en) | 2021-04-20 |
Family
ID=75501259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021334328.4U Active CN213004440U (en) | 2020-07-09 | 2020-07-09 | Automatic grinding and resistance-adjusting device for strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213004440U (en) |
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2020
- 2020-07-09 CN CN202021334328.4U patent/CN213004440U/en active Active
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