Measuring device, method for measuring workpiece dimensions, and machining equipment

Abstract

The present invention discloses a measuring device, a method for measuring the size of a workpiece, and a machining device. The measuring device includes a carrying platform, a dimension detection mechanism, and a workpiece clamping mechanism; the dimension detection mechanism and the workpiece clamping mechanism are both arranged on the carrying platform; the workpiece clamping mechanism is used for clamping the workpiece to be measured; the dimension detection mechanism includes a moving slide and a measuring body, the moving slide is slidably arranged on the carrying platform, and the moving slide moves in a direction close to or away from the workpiece clamping mechanism so that the measuring body approaches or moves away from the workpiece clamping mechanism; the measuring body includes a first measuring member, a second measuring member, and a first distance measuring sensor, the first measuring member and the first measuring member are both slidably arranged on the moving slide, and the first distance measuring sensor is used for measuring the relative distance between the first measuring member and the second measuring member to obtain the size of the workpiece. The above solution can solve the problems of poor detection accuracy and stability when detecting the size of the workpiece.

Description

Technical Field

[0001] The present invention relates to the technical field of machining, and in particular to a measuring device, a method for measuring the size of a workpiece, and a machining equipment. Background Art

[0002] Machining refers to the process of changing the external dimensions or performance of a workpiece through mechanical equipment. It can be divided into cutting machining and pressure machining according to the difference in machining methods.

[0003] In the related art, after the workpiece is machined, various dimensional inspections need to be carried out on it. For example, the dimensions such as the length, width, and hole diameter of the workpiece are inspected to confirm whether it is qualified. Usually, for workpieces of the same batch, manual sampling inspection is used for inspection. The operator takes out some workpieces, and then measures the dimensions to be inspected of the workpieces one by one with measuring tools such as a straight ruler and a vernier caliper. However, when inspecting the same kind of workpiece, due to human reasons, it is difficult to make the reference of the workpieces inspected each time the same. Therefore, the inspection accuracy and stability of manual inspection are both poor. Summary of the Invention

[0004] The present invention discloses a measuring device, a method for measuring the size of a workpiece, and a machining equipment to solve the problem of poor inspection accuracy and stability when measuring the size of a workpiece.

[0005] To solve the above problems, the present invention adopts the following technical solutions:

[0006] A measuring device is applied to a machining equipment. The measuring device includes a carrying platform, a dimension detection mechanism, and a workpiece clamping mechanism;

[0007] The dimension detection mechanism and the workpiece clamping mechanism are both arranged on the carrying platform; the workpiece clamping mechanism is used for clamping the workpiece to be measured; the dimension detection mechanism includes a moving slide and a measuring body. The moving slide is slidably arranged on the carrying platform, and the moving slide moves in a direction close to or away from the workpiece clamping mechanism, so that the measuring body approaches or moves away from the workpiece clamping mechanism;

[0008] The measurement body includes a first measurement member, a second measurement member, and a first distance measurement sensor. The first measurement member and the second measurement member are both slidably disposed on the moving slide table, so that the first measurement member and the second measurement member can move away from or close to each other. The moving directions of the first measurement member and the second measurement member are parallel. The first measurement member and the second measurement member are used to cooperate with the workpiece. The first distance measurement sensor is disposed on at least one of the first measurement member and the second measurement member. The first distance measurement sensor is used to measure the relative distance between the first measurement member and the second measurement member to obtain the size of the workpiece.

[0009] A method for measuring the size of a workpiece, which is applied to the above measurement device. The method includes:

[0010] Measuring the size of a standard part through the measurement device and reading a first reading of the first distance measurement sensor;

[0011] Measuring the size of the workpiece to be measured through the measurement device and reading a second reading of the first distance measurement sensor;

[0012] Obtaining the size of the workpiece to be measured according to the size of the standard part, the first reading, and the second reading.

[0013] A machining device includes the above measurement device.

[0014] The technical solution adopted by the present invention can achieve the following beneficial effects:

[0015] In the measurement device disclosed in the present invention, the workpiece clamping mechanism is used to clamp the workpiece to be measured. The moving slide table moves in a direction close to or away from the workpiece clamping mechanism, so that the measurement body moves close to or away from the workpiece clamping mechanism, thereby adjusting the position of the measurement body and the workpiece. The first measurement member and the second measurement member are used to cooperate with the workpiece to be measured to determine the size to be measured of the workpiece. Then, the first distance measurement sensor is used to measure the relative distance between the first measurement member and the second measurement member to obtain the size of the workpiece to be measured. In this solution, when detecting the same kind of workpiece, the position of the workpiece and the measurement reference during each measurement can be kept at the same position. Therefore, the influence of human factors is reduced, and the detection accuracy and stability when detecting the workpiece can be improved. Description of the Drawings

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0017] Figures 1 to 9Schematic structural diagram of the measuring device disclosed in the embodiments of the present invention;

[0018] Figure 10 Flowchart of the method for measuring the size of a workpiece disclosed in the embodiments of the present invention.

[0019] Description of reference numerals:

[0020] 100 - bearing platform, 200 - size detection mechanism, 210 - first slide, 211 - limiting part, 220 - second slide, 221 - limiting block, 222 - slide rail, 223 - sliding block, 224 - driving source, 230 - third slide, 240 - measuring body, 241 - first measuring piece, 2411 - first support plate, 2412 - first measuring rod, 242 - second measuring piece, 2421 - second support plate, 2422 - second measuring rod, 243 - first distance measuring sensor, 244 - first driving piece, 245 - second driving piece, 246 - guiding part, 250 - second distance measuring sensor, 261 - first reference block, 262 - second reference block, 271 - first guiding track, 272 - second guiding track, 273 - third guiding track, 281 - first driving mechanism, 282 - second driving mechanism, 283 - third driving mechanism, 300 - workpiece clamping mechanism, 310 - fixed positioning block, 320 - movable positioning block, 330 - first driving part, 340 - support frame, 350 - second driving part, 360 - first clamping piece, 370 - second clamping piece, 380 - roller, 390 - support column, 400 - workpiece. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] The following will describe in detail the technical solutions disclosed in each embodiment of the present invention with reference to the drawings.

[0023] As Figures 1 to 9 shown, the embodiments of the present invention disclose a measuring device, which is applied to a machining device. The disclosed measuring device includes a bearing platform 100, a size detection mechanism 200 and a workpiece clamping mechanism 300.

[0024] The bearing platform 100 provides an installation basis for other components of the measuring device. The dimension detection mechanism 200 and the workpiece clamping mechanism 300 are both arranged on the bearing platform 100. The workpiece clamping mechanism 300 is used to clamp the workpiece 400 to be measured. The workpiece clamping mechanism 300 may include components such as clamping jaws and clamping blocks, and the specific structure of the workpiece clamping mechanism 300 is not limited in this article.

[0025] The dimension detection mechanism 200 is used to measure the dimensions of the workpiece 400 clamped by the workpiece clamping mechanism 300. The dimension detection mechanism 200 includes a moving slide and a measuring body 240. The moving slide is slidably arranged on the bearing platform 100. The moving slide moves in a direction close to or away from the workpiece clamping mechanism 300, so that the measuring body 240 can approach or move away from the workpiece clamping mechanism 300, thereby enabling the position of the measuring body 240 and the workpiece 400 to be adjusted.

[0026] During the specific operation process, when the workpiece clamping mechanism 300 loads or disassembles the workpiece 400, in order to avoid interference or collision between the workpiece 400 and components such as the manipulator for transporting the workpiece 400 and the measuring body 240, at this time, the measuring body 240 can be moved to a safe position away from the workpiece clamping mechanism 300 through the moving slide. When it is necessary to measure the dimensions of the workpiece 400, the measuring body 240 can be moved to a position close to the workpiece clamping mechanism 300 through the moving slide to measure the workpiece 400. In addition, when the first measuring piece 241 and the second measuring piece 242 in the following text move, it is also necessary to move the measuring body 240 to a position where it does not interfere with the workpiece 400 through the moving slide.

[0027] The measuring body 240 includes a first measuring piece 241, a second measuring piece 242, and a first distance measuring sensor 243. The first measuring piece 241 and the first measuring piece 241 are both slidably arranged on the moving slide, so that the first measuring piece 241 and the second measuring piece 242 can move away from or close to each other. The moving directions of the first measuring piece 241 and the second measuring piece 242 are parallel. The first measuring piece 241 and the second measuring piece 242 are used to cooperate with the workpiece 400 to be measured to determine the dimensions of the workpiece 400 to be measured. For example, when measuring the length or width of the workpiece 400, the first measuring piece 241 and the second measuring piece 242 respectively abut against the two opposite faces where the length or width is located. At this time, the relative distance between the first measuring piece 241 and the second measuring piece 242 is the length or width dimension of the workpiece 400 to be measured. For another example, as Figures 4 to 7 shown, when detecting the inner diameter or outer diameter of the workpiece 400, the first measuring piece 241 and the second measuring piece 242 respectively abut against the inner walls or outer walls on both sides of the hole to be detected. At this time, the relative distance between the first measuring piece 241 and the second measuring piece 242 is the inner diameter or outer diameter dimension of the workpiece 400 to be measured.

[0028] The first distance measuring sensor 243 is disposed on at least one of the first measuring member 241 and the second measuring member 242. The first distance measuring sensor 243 is used to measure the relative distance between the first measuring member 241 and the second measuring member 242 to obtain the size of the workpiece 400 to be measured. Optionally, the first distance measuring sensor 243 may be a displacement sensor or a laser sensor. Of course, the first distance measuring sensor 243 may also have other structures, which are not limited in this article.

[0029] In a specific detection process, when the size of the workpiece 400 needs to be measured, the measurement main body 240 is moved to a specified position by moving the sliding table. The specified position here is a position where the workpiece 400 can cooperate with the first measuring member 241 and the second measuring member 242. Then, the relative positions of the first measuring member 241 and the second measuring member 242 are adjusted so that the first measuring member 241 and the second measuring member 242 abut against the workpiece 400 to be measured. Finally, the reading of the first distance measuring sensor 243 is read, and the size of the workpiece 400 to be measured is obtained according to the reading of the first distance measuring sensor 243.

[0030] In another specific detection process, first, all the dimensions to be detected on the standard part are detected by the measuring device. The standard part here and the workpiece 400 to be measured are the same kind of workpiece. The detected dimensions of the standard part here are the designed dimensions. The workpiece 400 to be measured here is the workpiece 400 that needs to be detected after processing. The designed dimension of the standard part can be Ms. Ms here is a known dimension, not the dimension detected from the measuring device. The reading of the standard part after measurement is read from the first distance measuring sensor 243. At this time, the reading of the first distance measuring sensor 243 can be recorded as M0. Then, all the dimensions to be detected on the workpiece 400 to be measured are detected by the measuring device. The reading of the workpiece 400 to be measured after measurement is read from the first distance measuring sensor 243. At this time, the reading of the first distance measuring sensor 243 is recorded as M1. Then, the difference between M0 and M1 is calculated. The difference between M0 and M1 is the difference between the designed dimension and the actual dimension. The value obtained by adding the difference between Ms and the difference between M0 and M1 is the actual dimension of the workpiece 400 to be measured.

[0031] In the embodiments disclosed in this application, when the measuring device detects the same kind of workpiece, the position of the workpiece 400 and the measurement reference for each measurement are maintained at the same position. Therefore, the influence of human factors is reduced, and the detection accuracy and stability when detecting the workpiece 400 can be improved.

[0032] In addition, during the actual detection process of the measuring device disclosed in this application, the dimension to be measured can be obtained by reading the readings of the first distance measuring sensor 243, thus reducing the participation of the operator and lowering the labor intensity of the operator.

[0033] In addition, the measuring device disclosed in this application can be used in conjunction with a processing machine tool to achieve on-line measurement, so as to detect each workpiece 400, timely discover unqualified products, and further reduce the scrap rate. For example, when the workpiece 400 is processed by the processing machine tool and completed, it can be fed into the measuring device for measurement. Therefore, the measuring device disclosed in this application can achieve 100% on-line measurement, further improving the detection accuracy and stability when detecting the workpiece 400.

[0034] The above-mentioned first measuring member 241 and second measuring member 242 can both move in the vertical direction or move in the horizontal direction perpendicular to the moving slide.

[0035] In the above embodiment, the operator can directly push the first measuring member 241 and the second measuring member 242 to move. At this time, the operator's hand is in direct contact with the first measuring member 241 and the second measuring member 242. The first measuring member 241 and the second measuring member 242 are likely to clamp the operator's hand, easily causing injury to the operator.

[0036] Based on this, in another alternative embodiment, the measuring body 240 may further include a first driving member 244 and a second driving member 245. The first driving member 244 and the second driving member 245 are both arranged on the moving slide. The first driving member 244 is connected to the first measuring member 241 and is used to drive the first measuring member 241 to move. The second driving member 245 may be connected to the second measuring member 242 and is used to drive the second measuring member 242 to move. In this solution, the first driving member 244 is used to drive the first measuring member 241 to move, and the second driving member 245 is used to drive the second measuring member 242 to move, so that the operator does not need to directly contact the first measuring member 241 and the second measuring member 242, and thus it is not easy to cause injury to the operator, improving the personal safety of the operator.

[0037] Optionally, the first driving member 244 and the second driving member 245 can be manual driving structures, such as manual push rods and the like. Of course, the first driving member 244 and the second driving member 245 can be electric driving structures. For example, the first driving member 244 and the second driving member 245 can be power structures such as cylinders, hydraulic cylinders or linear motors. The first driving member 244 and the second driving member 245 being electric driving structures can further reduce manual participation, thereby improving the automation performance of the measuring device.

[0038] In order to improve the moving accuracy of the first measuring member 241 and the second measuring member 242, in another alternative embodiment, the moving slide table may be provided with a guiding portion 246, and both the first measuring member 241 and the second measuring member 242 may be slidably engaged with the guiding portion 246. In this solution, the guiding portion 246 can guide the moving directions of the first measuring member 241 and the second measuring member 242, thereby further improving the moving accuracy of the first measuring member 241 and the second measuring member 242, and further improving the detection accuracy of the measuring device.

[0039] Optionally, the guiding portion 246 may be a guiding rod, and the first measuring member 241 and the second measuring member 242 may be provided with guiding holes or guiding grooves that cooperate with the guiding rod. Or the guiding portion 246 may also be a guide rail, and sliders that cooperate with the guide rail are provided on the first measuring member 241 and the second measuring member 242. Of course, the guiding portion 246 may also be other structures, which are not limited in this article.

[0040] In another alternative embodiment, the number of the guiding portions 246 may be at least two. At least two guiding portions 246 may be disposed on opposite sides of the first measuring member 241 and the second measuring member 242. In this solution, the supporting forces of the guiding portions 246 on the opposite sides of the first measuring member 241 and the second measuring member 242 are relatively balanced, so as to avoid the situation that the first measuring member 241 and the second measuring member 242 are inclined unilaterally.

[0041] In the above embodiment, the first measuring member 241 and the second measuring member 242 may be in a block structure. At this time, the length of the block structure is short, so that the distance between the moving slide table and the workpiece clamping mechanism 300 is relatively close, which easily causes interference between the moving slide table and the workpiece clamping mechanism 300.

[0042] In another alternative embodiment, the first measuring member 241 may include a first support plate 2411 and a first measuring rod 2412. The first support plate 2411 may be slidably engaged with the guiding portion 246. One end of the first measuring rod 2412 is connected to the side of the first support plate 2411 facing away from the guiding portion 246, and the other end of the first measuring rod 2412 extends in the direction of the workpiece clamping mechanism 300. The second measuring member 242 may include a second support plate 2421 and a second measuring rod 2422. The second support plate 2421 may be slidably engaged with the guiding portion 246. One end of the second measuring rod 2422 may be connected to the side of the second support plate 2421 facing away from the guiding portion 246, and the other end of the second measuring rod 2422 extends in the direction of the workpiece clamping mechanism 300. The first measuring rod 2412 and the second measuring rod 2422 are used to cooperate with the workpiece 400 to be measured. At this time, the first support plate 2411 is used to realize the installation and guiding functions of the first measuring member 241, and the second support plate 2421 is used to realize the installation and guiding functions of the second measuring member 242. The first measuring rod 2412 and the second measuring rod 2422 are used to realize the measuring function.

[0043] In this solution, the lengths of the first measuring rod 2412 and the second measuring rod 2422 are relatively long, so that the distance between the moving slide and the workpiece clamping mechanism 300 is relatively far, and thus it is not easy to cause interference between the moving slide and the workpiece clamping mechanism 300.

[0044] In the above embodiment, the first support plate 2411 and the first measuring rod 2412 may be connected by welding, riveting, threading, etc. The second support plate 2421 and the second measuring rod 2422 may be connected by welding, riveting, threading, etc.

[0045] In the above embodiment, during the movement of the first measuring member 241 and the second measuring member 242, collisions are likely to occur, and thus at least one of the first measuring member 241 and the second measuring member 242 is likely to be damaged.

[0046] Based on this, in another alternative embodiment, the moving slide may be provided with a limiting portion 211. The limiting portion 211 may be located between the first measuring member 241 and the second measuring member 242. The first measuring member 241 may be in limiting cooperation with the limiting portion 211 in the direction towards the second measuring member 242, and the second measuring member 242 may be in limiting cooperation with the limiting portion 211 in the direction towards the first measuring member 241. The first measuring member 241 and the second measuring member 242 may be in contact with the limiting portion 211 simultaneously.

[0047] In this solution, the limiting part 211 can limit the moving distances of the first measuring member 241 and the second measuring member 242, so as to avoid collision between the first measuring member 241 and the second measuring member 242 during movement, making the first measuring member 241 and the second measuring member 242 not easily damaged, and thus improving the safety performance of the measuring device.

[0048] In addition, the limiting part 211 can also be used as a measurement reference. When the first measuring member 241 and the second measuring member 242 are in contact with the limiting part 211 at the same time, it can be considered that the first measuring member 241 and the second measuring member 242 are in the initial position. At this time, the reading of the first distance measuring sensor 243 is the initial reading, and this initial reading is the origin value of the measuring body 240. Therefore, taking the position where the first measuring member 241 and the second measuring member 242 are in contact with the limiting part 211 at the same time as the initial position before each measurement makes the reference for each measurement the same, so the dimensions of the workpiece 400 measured are more accurate and reliable. Therefore, it is beneficial to further improve the detection accuracy and stability when detecting the dimensions of the workpiece 400.

[0049] In another alternative embodiment, the dimension detection mechanism 200 may further include a second distance measuring sensor 250. The moving slide table may include a first slide table 210 and a second slide table 220. The first slide table 210 is slidably disposed on the second slide table 220. The second slide table 220 is slidable relative to the bearing platform 100. The moving direction of the first slide table 210 is parallel to the moving direction of the second slide table 220. The measuring body 240 may be disposed on the first slide table 210. The second distance measuring sensor 250 may be disposed on the first slide table 210 and / or the second slide table 220. The second distance measuring sensor 250 may be used to measure the relative distance between the first slide table 210 and the second slide table 220.

[0050] This solution can further increase the range of dimensions measured by the measuring device, so that the measuring device can be compatible with the measurement of more different types of dimensions.

[0051] In the specific working process, when it is necessary to measure the length of the workpiece 400, move the second slide table 220 so that the second slide table 220 moves to a preset position. At this time, the second slide table 220 drives the first slide table 210 and the measuring body 240 to move together. The preset position can be used as a measurement reference. Then move the first slide table 210 until at least one of the first measuring member 241 and the second measuring member 242 abuts against the workpiece 400, and record the reading of the second distance measuring sensor 250. The length value of the workpiece 400 can be obtained according to the reading of the second distance measuring sensor 250. The specific calculation method can be calculated according to the calculation method mentioned above, which will not be elaborated here. Of course, the depth of the groove, the width of the workpiece 400 and other dimensions can also be measured by the relative sliding of the first slide table 210 and the second slide table 220.

[0052] Optionally, the second distance measuring sensor 250 may be a displacement sensor or a laser sensor. Of course, the second distance measuring sensor 250 may also have other structures, which are not limited in this article.

[0053] In order to ensure that the second sliding table 220 can accurately move to the preset position every time the workpiece 400 is measured, in another optional embodiment, the dimension detection mechanism 200 may further include a first reference block 261 and a second reference block 262. The first reference block 261 is movably arranged on the bearing platform 100, and the second reference block 262 may be arranged on the side of the second sliding table 220 facing the workpiece clamping mechanism 300. The first reference block 261 can slide to a position where it is in limit cooperation with the second reference block 262 in the direction towards the workpiece clamping mechanism 300.

[0054] In the specific operation process, when the second sliding table 220 needs to be positioned, the first reference block 261 can be slid to the first position. When the first reference block 261 is in the first position, during the sliding process of the second sliding table 220, the second reference block 262 on the second sliding table 220 can contact the first reference block 261, thereby preventing the second sliding table 220 from continuing to move in the direction towards the workpiece clamping mechanism 300. Therefore, when the first reference block 261 and the second reference block 262 are in limit cooperation, the first reference block 261 and the second reference block 262 position the second sliding table 220 at the preset position.

[0055] This solution can make the second sliding table 220 slide to the same position every time, thus avoiding the problem of deviation in the detection results caused by the poor sliding accuracy of the second sliding table 220.

[0056] In addition, when it is necessary to move the measurement body 240 to a position closer to the workpiece 400, the first reference block 261 can be slid to the second position. When the first reference block 261 is in the second position, it does not contact the second reference block 262 and the second sliding table 220, so the moving distance of the second sliding table 220 is not restricted.

[0057] Optionally, a guide rail matching the first reference block 261 may be arranged on the bearing platform 100, so as to improve the moving accuracy of the first reference block 261. Power structures such as air cylinders and linear motors may also be arranged on the bearing platform 100, and the first reference block 261 can be driven by power structures such as air cylinders and linear motors.

[0058] In the above embodiment, in order to ensure that each measurement has the same measurement reference, the first slide 210 and the second slide 220 need to return to the origin position after the measurement is completed, so as to prepare for the next measurement. That is to say, the first slide 210 slides relative to the second slide 220 toward the side away from the workpiece clamping mechanism 300, so that the first slide 210 and the second slide 220 return to the origin position. The origin position here can be a relative position of the first slide 210 and the second slide 220, and it can be determined by observing the value of the second distance sensor 250 whether the first slide 210 and the second slide 220 have returned to the origin position.

[0059] In another optional embodiment, the second slide 220 may be provided with a limit block 221, a slide rail 222, a sliding block 223 and a driving source 224, the extension direction of the slide rail 222 may be parallel to the moving direction of the second slide 220, the sliding block 223 may be slidably matched with the slide rail 222, the driving source 224 may be connected with the sliding block 223, and the sliding block 223 may be connected with the second distance measuring sensor 250. The driving source 224 may drive the second distance measuring sensor 250 to move through the sliding block 223, and the sliding block 223 may be limitedly matched with the limit block 221 in a direction toward the workpiece clamping mechanism 300.

[0060] During the specific operation, after the second slide 220 moves to the preset position, the first slide 210 moves relative to the second slide 220 until the first measuring piece 241 and the second measuring piece 242 abut against the workpiece 400. Then the driving source 224 drives the second distance measuring sensor 250 to move through the sliding block 223 until the sliding block 223 and the limit block 221 are in position. At this time, the second distance measuring sensor 250 measures the same position each time. As the sizes of different workpieces to be measured are different, the relative positions of the first slide 210 and the second slide 220 are different, and the readings of the second distance measuring sensor 250 are different, so the readings of the second distance measuring sensor 250 are obtained each time. By comparing the readings with the readings of the standard parts, the size of the workpiece 400 to be measured can be obtained.

[0061] In this solution, the second distance measuring sensor 250 measures the same position each time, so the reference for each measurement is the same, which can further improve the measurement accuracy of the workpiece 400. At the same time, there is no need to set the origin position for the first slide 210 and the second slide 220, thereby simplifying the operation process of the measuring device.

[0062] In another alternative embodiment, the moving slide table may further include a third slide table 230, which is slidably disposed on the carrying platform 100. The second slide table 220 is slidably disposed on the third slide table 230. The moving direction of the third slide table 230 may be parallel to the moving direction of the second slide table 220. In this solution, the third slide table 230 is used to drive the first slide table 210 and the second slide table 220 to move relative to the carrying platform 100. At this time, the first slide table 210, the second slide table 220 and the third slide table 230 can move relative to each other, so that the sliding range of the moving slide table can be further increased, and thus the measuring device can be compatible with more types of workpieces 400.

[0063] In another alternative embodiment, the dimension detection mechanism 200 may further include a first driving mechanism 281, a second driving mechanism 282 and a third driving mechanism 283. The first driving mechanism 281 may be disposed on the second slide table 220 and connected to the first slide table 210 for driving the first slide table 210 to move. The second driving mechanism 282 may be disposed on the third slide table 230 and connected to the second slide table 220 for driving the second slide table 220. The third driving mechanism 283 may be disposed on the carrying platform 100 and connected to the third slide table 230 for driving the third slide table 230 to move.

[0064] In this solution, the first slide table 210, the second slide table 220 and the third slide table 230 are all driven by corresponding driving mechanisms, so as to prevent the operator from directly contacting the first slide table 210, the second slide table 220 and the third slide table 230, thereby avoiding the operator from being injured and further improving the personal safety of the operator.

[0065] Optionally, the first driving mechanism 281, the second driving mechanism 282 and the third driving mechanism 283 may all be power structures such as air cylinders and linear motors. The first driving mechanism 281, the second driving mechanism 282 and the third driving mechanism 283 are all electrically driven structures, which can further reduce manual participation and thus improve the automation performance of the measuring device.

[0066] In a specific embodiment, the third driving mechanism 283 may be a linear motor, the second driving mechanism 282 may be a cylinder, and the first driving mechanism 281 may include two cylinders, the rodless ends of the two cylinders are fixedly connected, the driving rod of one cylinder is connected to the second slide 220, and the driving rod of the other cylinder is connected to the first slide 210. The two cylinders of the first driving mechanism 281 can further increase the moving distance of the first slide 210 and the second slide 220. In addition, after the second driving mechanism 282 moves the second slide 220 to the preset position, the second driving mechanism 282 can also limit the second slide 220 to further ensure that the second slide 220 does not move.

[0067] In order to further improve the movement accuracy of each slide, in another optional embodiment, the second slide 220 may be provided with a first guide rail 271, and the first slide 210 may be slidably matched with the first guide rail 271. The third slide 230 may be provided with a second guide rail 272, and the second guide rail 272 may be slidably matched with the second slide 220; the carrying platform 100 may be provided with a third guide rail 273, and the third guide rail 273 may be slidably matched with the third slide 230.

[0068] In this solution, the first slide 210, the second slide 220 and the third slide 230 are all guided by corresponding guide rails, thereby further improving the movement accuracy of the first slide 210, the second slide 220 and the third slide 230, thereby further improving the detection accuracy of the measuring device.

[0069] The specific structures and quantities of the first guide rail 271 , the second guide rail 272 and the third guide rail 273 can be flexibly set according to actual needs and are not limited herein.

[0070] The present application discloses a specific structure of a workpiece clamping mechanism 300. Of course, the workpiece clamping mechanism 300 can also be other structures, which is not limited herein. Specifically, the workpiece clamping mechanism 300 can include a fixed positioning block 310, a movable positioning block 320, a first driving unit 330 and a support frame 340. The support frame 340 can be arranged on the carrier platform 100, and the fixed positioning block 310, the movable positioning block 320, and the first driving unit 330 can all be arranged on the side of the support frame 340 away from the carrier platform 100. The fixed positioning block 310 and the movable positioning block 320 are spaced apart along a first direction, and the first direction is parallel to the moving direction of the mobile slide. The first driving unit 330 is arranged on the carrier platform 100, and the first driving unit 330 can be connected to the movable positioning block 320. The first driving unit 330 is used to drive the movable positioning block 320 to approach or move away from the fixed positioning block 310 along the first direction.

[0071] The fixed positioning block 310 and the movable positioning block 320 are used to position the workpiece 400 in the first direction, where the first direction can be the length direction or the width direction of the workpiece 400, or the length direction or the width direction of the measuring device.

[0072] During the specific operation process, when the workpiece 400 is placed on the fixed positioning block 310 and the movable positioning block 320, the first driving part 330 drives the movable positioning block 320 to approach the fixed positioning block 310. At this time, the movable positioning block 320 can push the workpiece 400 to move in the direction towards the fixed positioning block 310 until the end face of the workpiece 400 abuts against the fixed positioning block 310, thereby completing the positioning of the workpiece 400 in the first direction.

[0073] The workpiece clamping mechanism 300 may further include a second driving part 350, a first clamping member 360 and a second clamping member 370. The second driving part 350 may be disposed on at least one of the support frame 340 and the carrying platform 100. The first clamping member 360 and the second clamping member 370 may be arranged at intervals in the second direction, and the first direction and the second direction are perpendicular to each other. For example, the first direction may be the length direction of the workpiece 400, and the second direction may be the width direction of the workpiece 400. The first clamping member 360 and the second clamping member 370 are used to clamp the workpiece 400 to be detected.

[0074] Both the fixed positioning block 310 and the movable positioning block 320 are located between the first clamping member 360 and the second clamping member 370. Both the first clamping member 360 and the second clamping member 370 are connected to the second driving part 350. The second driving part 350 drives the first clamping member 360 and the second clamping member 370 to move simultaneously in the second direction, and the moving directions of the first clamping member 360 and the second clamping member 370 are opposite.

[0075] During the specific operation process, after the workpiece 400 is positioned in the first direction, the second driving part 350 drives the first clamping member 360 and the second clamping member 370 to move. Both the first clamping member 360 and the second clamping member 370 move towards the workpiece 400. The first clamping member 360 and the second clamping member 370 can push the workpiece 400 towards the center of the workpiece clamping mechanism 300, thereby realizing the centering of the workpiece 400. When both the first clamping member 360 and the second clamping member 370 abut against the opposite sides of the workpiece 400, the workpiece 400 is clamped.

[0076] In this scheme, the workpiece 400 can be positioned in the first direction by the fixed positioning block 310 and the movable positioning block 320, and the workpiece 400 can be centered and clamped by the first clamping member 360 and the second clamping member 370. Therefore, the workpiece clamping mechanism 300 disclosed in the present application can not only realize the clamping operation of the workpiece 400, but also can position and center the workpiece 400, thereby improving the clamping accuracy of the workpiece 400, and further improving the detection accuracy of the workpiece 400.

[0077] In the above embodiment, the first driving part 330 may be a structure such as a cylinder, a linear motor, etc. Of course, the first driving part 330 may also be other power structures, which are not limited herein. The second driving part 350 may include a first cylinder and a second cylinder, the rodless end of the first cylinder is connected to the rodless end of the second cylinder, the cylinder rod of the first cylinder is connected to the first clamping member 360, and the cylinder rod of the second cylinder is connected to the second clamping member 370. Of course, the second driving part 350 may also be other structures, which are not limited herein.

[0078] In another optional embodiment, the second driving part 350 can be a parallel clamping cylinder. The parallel clamping cylinder has two cylinder rods arranged in opposite directions. The two cylinder rods of the parallel clamping cylinder move synchronously, so the movement accuracy is higher, so that the centering accuracy of the workpiece 400 is higher. In addition, the parallel clamping cylinder is only provided with one air path, so that the structure of the measuring device is simpler.

[0079] In the above embodiment, when the first clamping member 360 and the second clamping member 370 push the workpiece 400 to move, they are prone to wear on the workpiece 400, so that the workpiece 400 is easily scratched. Based on this, in another optional embodiment, the first clamping member 360 and the second clamping member 370 can be provided with a roller 380, and the roller 380 can be used to contact the workpiece 400 to be measured. In this solution, the roller 380 is in sliding contact with the workpiece 400, thereby reducing the friction between the workpiece 400 and the first clamping member 360 and the second clamping member 370, thereby making the workpiece 400 not easily scratched, thereby improving the safety performance of the workpiece 400.

[0080] In another optional embodiment, the workpiece clamping mechanism 300 may further include a plurality of support columns 390, which may be spaced apart on the side of the support frame 340 away from the carrying platform 100, and the plurality of support columns 390 are used to support the workpiece 400 to be measured, and the top surfaces of the plurality of support columns 390 may be flush with the top surface of the movable positioning block 320. This solution can prevent the workpiece 400 from tilting to the side, thereby improving the reliability of the workpiece clamping mechanism 300.

[0081] Based on the measuring device of any of the above embodiments of the present application, the embodiments of the present application further disclose a machining device, and the disclosed machining device has the measuring device of any of the above embodiments.

[0082] The machining device disclosed in the present application further includes a machining tool. The measuring device can be used in cooperation with the machining tool to achieve on-line measurement, so as to detect each workpiece 400, timely discover unqualified products, and further reduce the scrap rate. For example, when the workpiece 400 is processed by the machining tool, it can be fed into the measuring device to measure the workpiece 400. Therefore, the measuring device disclosed in the present application can achieve 100% on-line measurement, further improving the detection accuracy and stability when detecting the workpiece 400.

[0083] For example, after the machining tool processes the workpiece 400, the manipulator can place the processed workpiece 400 into the measuring device to measure the size of the workpiece 400. After the size measurement of the workpiece 400 is completed, the workpiece 400 is taken out.

[0084] In a specific embodiment, the driving components mentioned above can all be electric driving structures. At this time, the measuring device can be programmed according to the measurement sequence of each dimension of the workpiece 400. After the workpiece 400 is clamped, the components in the dimension detection mechanism 200 move in sequence. When the first measuring piece 241 and the second measuring piece 242 contact the workpiece 400, the readings of the first distance measuring sensor 243 and the second distance measuring sensor 250 are recorded, and the recorded readings can be displayed on the upper computer of the machining device. Or the above calculation formula can be input into the control program of the machining device, and the readings of the first distance measuring sensor 243 and the second distance measuring sensor 250 are input into the control program to calculate the final measured dimension.

[0085] Based on the measuring device of the above embodiments of the present invention, the embodiments of the present invention further disclose a method for measuring the size of a workpiece, which is applied to the measuring device described above, as Figure 10 shown, the method includes:

[0086] S100. Measure the size of the standard part through the measuring device, and read the reading of the first distance measuring sensor 243 as the first reading.

[0087] The detected dimensions of the standard part here are design dimensions. First, all the dimensions that need to be detected on the standard part are detected through the measuring device. The design dimension of the standard part can be Ms. Here, Ms is a known dimension, not the dimension detected from the measuring device. Read the reading of the standard part after measurement from the first distance measuring sensor 243. At this time, the reading of the first distance measuring sensor 243 is recorded as M0. Here, M0 is the first reading.

[0088] S200. Measure the size of the workpiece to be measured through a measuring device, and read the second reading of the first distance measuring sensor 243.

[0089] Detect all the dimensions to be detected on the workpiece 400 to be measured through the measuring device. Read the reading after measuring the workpiece 400 to be measured from the first distance measuring sensor 243. At this time, the reading of the first distance measuring sensor 243 is denoted as M1. Here, M1 is the second reading.

[0090] S300. Obtain the size of the workpiece 400 to be measured based on the size of the standard part, the first reading, and the second reading.

[0091] Calculate the difference between M0 and M1. The difference between M0 and M1 is the difference between the designed size and the actual size. The value obtained by adding Ms to the difference between M0 and M1 is the actual size of the workpiece 400 to be measured.

[0092] In the embodiments disclosed in the present application, when the measuring device detects the same type of part, the position of the workpiece 400 and the measuring reference during each measurement are kept at the same position. Therefore, the influence of human factors is reduced, and thus the detection accuracy and stability when detecting the workpiece 400 can be improved.

[0093] In the above embodiments of the present invention, the differences between the various embodiments are mainly described. As long as the different optimized features between the various embodiments are not contradictory, they can be combined to form a more optimal embodiment. Considering the simplicity of the text, they will not be elaborated here.

[0094] The above are only the embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A measuring device, applied to a machining equipment, characterized in that, The measurement device includes a carrying platform (100), a dimension detection mechanism (200), and a workpiece clamping mechanism (300). The dimension detection mechanism (200) and the workpiece clamping mechanism (300) are both arranged on the carrying platform (100); the workpiece clamping mechanism (300) is used for clamping a workpiece (400) to be measured; the dimension detection mechanism (200) includes a moving slide and a measurement body (240), the moving slide is slidably arranged on the carrying platform (100), and the moving slide moves in a direction approaching or departing from the workpiece clamping mechanism (300) so that the measurement body (240) approaches or departs from the workpiece clamping mechanism (300). The measurement body (240) includes a first measurement member (241), a second measurement member (242), and a first distance measurement sensor (243). The first measurement member (241) and the second measurement member (242) are both slidably arranged on the moving slide so that the first measurement member (241) and the second measurement member (242) can move away from or close to each other. The moving directions of the first measurement member (241) and the second measurement member (242) are parallel. The first measurement member (241) and the second measurement member (242) are used for cooperating with the workpiece (400). The first measurement member (241) and the second measurement member (242) respectively abut against the workpiece (400) to determine the dimension of the workpiece (400) to be measured. The first distance measurement sensor (243) is arranged on at least one of the first measurement member (241) and the second measurement member (242). The first distance measurement sensor (243) is used for measuring the relative distance between the first measurement member (241) and the second measurement member (242) to obtain the dimension of the workpiece (400). The moving slide is provided with a guiding portion (246). The first measurement member (241) and the second measurement member (242) are both in sliding cooperation with the guiding portion (246). The first measurement member (241) includes a first support plate (2411) and a first measurement rod (2412). The first support plate (2411) is in sliding cooperation with the guiding portion (246). One end of the first measurement rod (2412) is connected to the side of the first support plate (2411) departing from the guiding portion (246), and the other end of the first measurement rod (2412) extends in the direction of the workpiece clamping mechanism (300). The second measuring member (242) includes a second support plate (2421) and a second measuring rod (2422). The second support plate (2421) is in sliding fit with the guiding portion (246). One end of the second measuring rod (2422) is connected to the side of the second support plate (2421) facing away from the guiding portion (246), and the other end of the second measuring rod (2422) extends in the direction towards the workpiece clamping mechanism (300). The first measuring rod (2412) and the second measuring rod (2422) are used to cooperate with the workpiece (400). The dimension detection mechanism (200) further includes a second distance measuring sensor (250). The moving slide table includes a first slide table (210) and a second slide table (220). The first slide table (210) is slidably disposed on the second slide table (220). The second slide table (220) is slidable relative to the carrying platform (100). The moving direction of the first slide table (210) is parallel to the moving direction of the second slide table (220). The measuring body (240) is disposed on the first slide table (210). The second distance measuring sensor (250) is disposed on the first slide table (210) and / or the second slide table (220). The second distance measuring sensor (250) is used to measure the relative distance between the first slide table (210) and the second slide table (220).

2. The measuring device according to claim 1, characterized in that, The measuring body (240) further includes a first driving member (244) and a second driving member (245). The first driving member (244) and the second driving member (245) are both disposed on the moving slide table. The first driving member (244) is connected to the first measuring member (241) and is used to drive the first measuring member (241) to move. The second driving member (245) is connected to the second measuring member (242) and is used to drive the second measuring member (242) to move.

3. The measuring device according to claim 1, characterized in that, The moving slide table is provided with a limiting portion (211). The limiting portion (211) is located between the first measuring member (241) and the second measuring member (242). The first measuring member (241) is in limiting cooperation with the limiting portion (211) in the direction towards the second measuring member (242), and the second measuring member (242) is in limiting cooperation with the limiting portion (211) in the direction towards the first measuring member (241). The first measuring member (241) and the second measuring member (242) can be in contact with the limiting portion (211) simultaneously.

4. The measuring device according to claim 1, characterized in that, The dimension detection mechanism (200) further includes a first reference block (261) and a second reference block (262). The first reference block (261) is movably disposed on the carrying platform (100). The second reference block (262) is disposed on the side of the second slide table (220) facing the workpiece clamping mechanism (300). The first reference block (261) can slide to a position where it is in limiting cooperation with the second reference block (262) in the direction towards the workpiece clamping mechanism (300).

5. The measuring device according to claim 4, characterized in that, The second sliding table (220) is provided with a limit block (221), a slide rail (222), a sliding block (223) and a driving source (224). The extending direction of the slide rail (222) is parallel to the moving direction of the second sliding table (220). The sliding block (223) is slidably engaged with the slide rail (222). The driving source (224) is connected to the sliding block (223). The sliding block (223) is connected to the second distance measuring sensor (250). The driving source (224) drives the second distance measuring sensor (250) to move through the sliding block (223). The sliding block (223) and the limit block (221) are in limit cooperation in the direction towards the workpiece clamping mechanism (300).

6. The measuring device according to claim 4, characterized in that, The moving sliding table further includes a third sliding table (230). The third sliding table (230) is slidably arranged on the bearing platform (100). The second sliding table (220) is slidably arranged on the third sliding table (230). The moving direction of the third sliding table (230) is parallel to the moving direction of the second sliding table (220).

7. The measuring device according to claim 6, characterized in that, The dimension detection mechanism (200) further includes a first driving mechanism (281), a second driving mechanism (282) and a third driving mechanism (283). The first driving mechanism (281) is arranged on the second sliding table (220). The first driving mechanism (281) is connected to the first sliding table (210) and is used to drive the first sliding table (210) to move. The second driving mechanism (282) is arranged on the third sliding table (230). The second driving mechanism (282) is connected to the second sliding table (220) and is used to drive the second sliding table (220) to move. The third driving mechanism (283) is arranged on the bearing platform (100). The third driving mechanism (283) is connected to the third sliding table (230) and is used to drive the third sliding table (230) to move.

8. The measuring device according to claim 6, characterized in that, The second sliding table (220) is provided with a first guiding track (271). The first sliding table (210) is slidably engaged with the first guiding track (271). The third sliding table (230) is provided with a second guiding track (272). The second guiding track (272) is slidably engaged with the second sliding table (220). The bearing platform (100) is provided with a third guiding track (273). The third guiding track (273) is slidably engaged with the third sliding table (230).

9. The measuring device according to claim 1, characterized in that, The workpiece clamping mechanism (300) comprises a fixed positioning block (310), a movable positioning block (320), a first driving unit (330) and a supporting frame (340); the supporting frame (340) is arranged on the carrying platform (100); the fixed positioning block (310), the movable positioning block (320) and the first driving unit (330) are all arranged on a side of the supporting frame (340) away from the carrying platform (100); the fixed positioning block (310) and the movable positioning block (320) are spaced apart along a first direction, the first direction is parallel to the moving direction of the movable slide; the first driving unit (330) is arranged on the carrying platform (100); the first driving unit (330) is connected to the movable positioning block (320); the first driving unit (330) is used to drive the movable positioning block (320) to move closer to or away from the fixed positioning block (310) along the first direction; The workpiece clamping mechanism (300) further comprises a second driving portion (350), a first clamping member (360) and a second clamping member (370), wherein the second driving portion (350) is arranged on at least one of the supporting frame (340) and the carrying platform (100), and the first clamping member (360) and the second clamping member (370) are arranged at intervals along a second direction, and the first direction and the second direction are perpendicular to each other; The fixed positioning block (310) and the movable positioning block (320) are both located between the first clamping member (360) and the second clamping member (370); the first clamping member (360) and the second clamping member (370) are both connected to the second driving part (350); the second driving part (350) drives the first clamping member (360) and the second clamping member (370) to move simultaneously along the second direction, and the movement directions of the first clamping member (360) and the second clamping member (370) are opposite.

10. The measuring device according to claim 9, characterized in that, The second driving part (350) is a parallel-finger clamping cylinder.

11. The measuring device according to claim 9, characterized in that, The first clamping member (360) and the second clamping member (370) are both provided with rollers (380), and the rollers (380) are used to contact the workpiece (400).

12. The measuring device according to claim 9, characterized in that, The workpiece clamping mechanism (300) further comprises a plurality of support columns (390), wherein the plurality of support columns (390) are arranged at intervals on a side of the support frame (340) away from the bearing platform (100), and the plurality of support columns (390) are used to support the workpiece (400), and the top surfaces of the plurality of support columns (390) are flush with the top surface of the movable positioning block (320).

13. A method for measuring the size of a workpiece, applied to the measuring device according to any one of claims 1 to 12, characterized in that, The method includes: Measuring the size of the standard part by means of the measuring device, and reading a first reading of the first distance measuring sensor (243); Measuring the size of the workpiece to be measured by the measuring device, and reading a second reading of the first distance measuring sensor (243); The size of the workpiece (400) to be measured is obtained according to the size of the standard part, the first reading and the second reading.

14. A machining equipment, characterized in that, Comprising the measuring device according to any one of claims 1 to 12.

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