Auxiliary measuring tool for hardness tester
By designing a hardness tester auxiliary measuring fixture with adjustable pressure-bearing accessories and support components, the problem of unstable measurement of camshaft workpieces was solved, achieving more efficient and accurate hardness measurement, and improving operational convenience and equipment compatibility.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CNAIC CHENGDU AUTO PARTS
- Filing Date
- 2026-03-03
- Publication Date
- 2026-05-08
AI Technical Summary
Existing hardness tester measuring fixtures are difficult to stably support camshaft workpieces with complex contours, resulting in inaccurate measurement results, cumbersome operation, and easy damage to the workpiece surface.
A hardness tester auxiliary measuring fixture was designed, which adopts a liftable pressure-bearing adapter and support components, combined with an elastic sleeve and granular solids, to adapt to camshaft workpieces of different diameters. It provides stable support through shape fitting, and is equipped with a movable clamping device and an intelligent control system to ensure the stability and flexibility of the measurement.
It improves the accuracy and efficiency of measurement, reduces workpiece displacement and vibration, lowers the difficulty of operation, enhances compatibility with different models of hardness testers, and avoids measurement errors and workpiece damage.
Smart Images
Figure CN121994587A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of auxiliary measurement technology for hardness testers, and specifically relates to an auxiliary measurement fixture for hardness testers. Background Technology
[0002] After quenching, the surface hardness of the camshaft's working surface is typically measured and characterized using the Rockwell hardness scale (HRC). A camshaft that has undergone proper quenching generally needs to meet industry technical standards, such as 520-60 HRC, or be based on specific design specifications. Measuring this hardness value is a crucial quality control step to ensure that the camshaft meets design performance requirements and achieves long-term reliable operation.
[0003] In the process of developing this application, the applicant discovered at least the following shortcomings in the relevant technology: During the hardness measurement of camshafts, due to the complex contours and varying diameters of the workpieces, conventional support devices are difficult to stably fit against their surfaces, which can easily lead to displacement or vibration of the workpieces during measurement, affecting the accuracy of the measurement results. Summary of the Invention
[0004] Based on the above-mentioned technical problems, this application provides an auxiliary measuring fixture for a hardness tester, which aims to solve, to at least some extent, the technical problem of being unable to stably support and hold the workpiece.
[0005] In a first aspect of this application, an auxiliary measuring fixture for a hardness tester is provided, comprising: a placement base and an auxiliary device. The auxiliary device includes a hardness component, a support member, and a pressure-bearing adapter. The placement base has a measuring platform, the hardness component is connected to the measuring platform of the placement base, the support member is also connected to the measuring platform of the placement base, and the pressure-bearing adapter is connected to the support member. The support member is used to drive the pressure-bearing adapter to move up and down. The hardness component has a measuring part, and the pressure-bearing adapter and the measuring part of the hardness component are vertically opposite each other. A camshaft workpiece is disposed between the pressure-bearing adapter and the measuring part of the hardness component, and the pressure-bearing adapter conforms to the shape of the camshaft workpiece.
[0006] When the auxiliary measuring fixture is in use, the camshaft workpiece is positioned between the pressure-bearing adapter and the measuring part of the hardness component. The pressure-bearing adapter supports the camshaft workpiece, conforming to its shape and maintaining support. When the support component is activated, it can raise and lower the pressure-bearing adapter, thus adapting to support camshaft workpieces of different diameters. The hardness component measures the hardness of the camshaft workpiece through the measuring part. In other embodiments, the pressure-bearing adapter can also be a single piece of elastic rubber material, which limits the camshaft workpiece by compressing it.
[0007] In some embodiments, the pressure-bearing adapter includes a receiving chamber, a hardening component, a limiting component, and an elastic sleeve. The elastic sleeve is connected to the top of the receiving chamber, the hardening component is inserted into the interior of the receiving chamber, the limiting component is connected to the receiving chamber, and the limiting component has the function of limiting the upward angle of the hardening component. The elastic sleeve is made of an elastic material.
[0008] In some embodiments, the hardening component includes a tortuous tube, an extrusion plate, a connecting tube, and a circular tube. The tortuous tube is connected to the extrusion plate, the circular tube is connected to the outer ring of the extrusion plate, and the connecting tube is connected between the circular tube and the hardening component. The tortuous tube, the connecting tube, and the circular tube are internally connected.
[0009] In some embodiments, the auxiliary device further includes a first assembly and a movable part, the first assembly being connected between the hardness component and the measuring platform of the placement seat, and the first assembly being used to adjust the position of the hardness component, the movable part being connected between the support member and the measuring platform of the placement seat, and the movable part being used to adjust the position of the pressure-bearing adapter.
[0010] In some embodiments, the moving part includes a second bracket, a first drive motor, a first slider, and a first slide rail. A plurality of second brackets are respectively connected to the first drive motor and the first slide rail. The first slider is slidably connected to the first slide rail. The first drive motor is connected to the first slider through its own telescopic shaft.
[0011] In some embodiments, the auxiliary device further includes a second assembly and a connector, the connector being connected to the second assembly, the second assembly and the connector being connected between the support member and the movable part, the second assembly being used for assembling and disassembling the support member, and the connector being used for connecting between the support member and the second assembly.
[0012] In some implementations, the auxiliary measuring fixture further includes a clamping device, which includes a z-axis moving member, a clamping part, a y-axis moving member, and a clamping member. The z-axis moving member is connected to the measuring platform of the placement seat, the y-axis moving member is connected to the z-axis moving member, the clamping part is connected to the y-axis moving member, and the clamping member is connected to the clamping part. The z-axis moving member is used to drive the camshaft workpiece to move vertically, the y-axis moving member is used to drive the camshaft workpiece to move laterally, and the clamping part is used to drive the clamping member to clamp the camshaft workpiece.
[0013] In some embodiments, the clamping part includes a first motor, a screw, a driving component, and a guide rail. The screw is rotatably connected to the first motor, the driving component is disposed on the screw, the first motor is connected to the y-axis moving component, and the guide rail is also connected to the y-axis moving component. The driving component includes a driven block, a threaded hole, an extension frame, and a limiting hole. The threaded hole is formed on the driven block, the limiting hole is formed on the extension frame, the driven block is connected to the extension frame, the driven block is threadedly connected to the screw through the threaded hole, and the driving component is inserted into the limiting hole of the extension frame.
[0014] In some embodiments, the clamping part further includes a locking element, which includes a locking rod and a locking plate, wherein the two locking rods are respectively connected to the two screws, and the locking plate is inserted between the two locking rods.
[0015] In some embodiments, the clamping member includes a bearing and a retaining member. The bearing is connected to the extension frame, and the retaining member is connected to the bearing. The retaining member includes a second motor, a conical block, a second spring, a mounting base, and an alternating rod. The conical block is connected to the extension frame, and the second motor is connected to the conical block. The second motor is connected to the retaining member via its own rotation shaft. The retaining member has an internal hole, and the second spring and the alternating rod are disposed within the hole of the retaining member. The alternating rod is connected to the second spring, and the mounting base is connected between the retaining member and the second spring.
[0016] The hardness tester auxiliary measuring fixture provided in this application, by setting a pressure-bearing adapter, can be adapted to support camshaft workpieces of different diameters. When under pressure, it conforms to the complex contour shape of the camshaft workpiece to form a stable and customized support surface, which helps to reduce workpiece displacement or vibration during the measurement process and provides a stable foundation for hardness measurement. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A schematic diagram of the structure of a hardness tester auxiliary measuring fixture 10 according to one or more embodiments of this application is shown; Figure 2 It shows Figure 1 A schematic diagram of the auxiliary device 300 in the middle; Figure 3 It shows Figure 2A structural schematic diagram of the pressure-bearing adapter 370 in the middle; Figure 4 It shows Figure 3 sectional view diagram; Figure 5 It shows Figure 4 A schematic diagram of the connecting pipe 37103 and the circular pipe 37104 in the middle; Figure 6 It shows Figure 1 Another perspective illustration; Figure 7 It shows Figure 1 Schematic diagram of removing door panel 120; Figure 8 An assembly diagram of the auxiliary device 300 and the clamping device 400 is shown; Figure 9 A schematic diagram of the assembly of the hardness tester 310 with the first assembly 320 and the moving part 330 is shown. Figure 10 An assembly diagram of the second assembly 340, the connector 350, and the support member 360 is shown. Figure 11 It shows Figure 1 A schematic diagram of the clamping device 400 in the middle; Figure 12 It shows Figure 11 A magnified diagram of BB in the image; Figure 13 It shows Figure 11 A magnified diagram of AA in the image; Figure 14 An assembly diagram of the connecting part 430 and the z-axis moving part 420 is shown; Figure 15 An assembly diagram of the extender 45403 and the clamping member 460 is shown; Figure 16 It shows Figure 15 A cross-sectional view.
[0019] Explanation of reference numerals in the attached figures: 10. Auxiliary measuring fixtures; 100. Placement base; 110. Placement rack; 120. Door panel; 130. Casters; 140. Support leg; 200. Control unit; 210. Alarm device; 220. Display; 230. Controller; 240. Vibration sensor; 300. Auxiliary device; 310. Hardening component; 320. First assembly; 321. First limiting buckle; 322. First limiting rod; 323. Bolt; 324. First bracket; 330. Moving part; 331. Second bracket; 332. First drive motor; 333. First slider; 334. First slide rail; 340. Second assembly; 341. Connecting rod; 342. Second limiting buckle; 343. Second limiting rod; 350. Connecting piece; 351. Vertical plate; 352. Horizontal plate; 360. Supporting component; 61. Electric push rod cylinder; 362. Connecting ring; 363. Connecting rod; 370. Pressure-bearing adapter; 371. Hardened component; 37101. Bending tube; 37102. Extrusion plate; 37103. Connecting tube; 37104. Circular tube; 372. Limiting component; 37201. Circular ring; 37202. Cylindrical component; 37203. First spring; 37204. Mounting rod; 373. Rotary lock; 374. Receiving chamber; 375. Guide groove; 376. Elastic sleeve; 377. Mounting buckle; 378. Feed inlet; 400. Clamping device; 410. Mounting bracket; 420. Z-axis moving component; 421. Second drive motor; 422. Second slider; 423. Second slide rail; 430. Connecting part; 431. Fixing plate; 432. Following plate; 440. Y-axis moving component; 441. Third slide rail; 442. Third slider; 443. Third drive motor; 444. Drive motor component; 450. Clamping part; 451. First motor; 452. Third bracket; 453. Screw ; 454. Driving component; 45401. Passive block; 45402. Threaded hole; 45403. Extending frame; 45404. Limiting hole; 455. Guide rail; 456. Clamping component; 45601. Clamping rod; 45602. Clamping plate; 460. Holding component; 461. Bearing; 462. Supporting component; 46201. Second motor; 46202. Conical block; 46203. Second spring; 46204. Mounting base; 46205. Interlaced rod; Mislabeled: 375, guide groove; 378, feed inlet; 45402, threaded hole; 45404, limit hole; x, Camshaft workpiece. Detailed Implementation
[0020] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0021] A hardness tester auxiliary measuring fixture in the related technology has at least the following problems when in use: First, existing measuring fixtures typically use rigid or simple V-block supports, which are difficult to fit complex contours such as camshaft protrusions. When the hardness tester applies pressure, it can easily cause slight displacement or vibration of the workpiece, affecting the accuracy and repeatability of the measurement results.
[0022] Some measurement platforms are in fixed positions or are inconvenient to move and adjust, making it difficult to flexibly deploy them between different workstations in the workshop or quickly adjust the tooling status according to measurement needs; Secondly, in order to measure the hardness at different angles or axial positions on the camshaft, it is often necessary to manually disassemble, adjust and realign the workpiece repeatedly, which is tedious and time-consuming, and it is difficult to ensure the consistency of positioning each time. Furthermore, traditional rigid supports only make point or line contact with the workpiece. When a large load is applied by the hardness tester indenter, obvious indentations or local deformations may be generated in the working support area, which may not only affect the measurement but also damage the surface of the workpiece to be tested.
[0023] Existing fixed support or clamping devices are difficult to flexibly adapt to camshaft workpieces of different diameters, lengths, or profiles. At the same time, changing or adapting to different models of hardness timers often requires custom-made mounting fixtures, which is not convenient.
[0024] To address the aforementioned technical issues, this application provides an auxiliary measuring fixture for a hardness tester.
[0025] Figure 1 This illustration shows a structural schematic diagram of a hardness tester auxiliary measuring fixture 10 according to one or more embodiments of this application. Figure 2 It shows Figure 1 The structural diagram of the auxiliary device 300 in the middle, combined with Figure 1 as well as Figure 2 The present application provides a hardness tester auxiliary measuring fixture 10 for testing the hardness of a camshaft workpiece x. It includes a placement seat 100 and an auxiliary device 300. The auxiliary device 300 includes a hardness component 310, a support member 360, and a pressure-bearing adapter 370. The placement seat 100 has a measuring platform. The hardness component 310 is connected to the measuring platform of the placement seat 100. The support member 360 is also connected to the measuring platform of the placement seat 100. The pressure-bearing adapter 370 is connected to the support member 360. The support member 360 is used to drive the pressure-bearing adapter 370 to rise and fall. The hardness component 310 has a measuring part. The pressure-bearing adapter 370 and the measuring part of the hardness component 310 are vertically opposite each other. The camshaft workpiece x is placed between the pressure-bearing adapter 370 and the measuring part of the hardness component 310. The pressure-bearing adapter 370 conforms to the shape of the camshaft workpiece x.
[0026] In use, the auxiliary measuring fixture 10 provided in this application places the camshaft workpiece x between the pressure-bearing adapter 370 and the measuring part of the hardness component 310. The pressure-bearing adapter 370 supports the camshaft workpiece x, conforming to its shape to maintain support. When the support member 360 is activated, it can raise and lower the pressure-bearing adapter 370, thereby adapting to support camshaft workpieces x of different diameters. The hardness component 310 measures the hardness of the camshaft workpiece x through the measuring part. Furthermore, the pressure-bearing adapter 370 can be designed to conform to the contour shape of the camshaft workpiece x, supporting it by fitting the two shapes together, thus improving reliability. The specific details of the auxiliary measuring fixture 10 for a hardness tester provided in this application will now be further described with reference to the accompanying drawings.
[0027] Figure 3 It shows Figure 2 A structural schematic diagram of the pressure-bearing adapter 370. Figure 4 It shows Figure 3 The sectional view diagram in the figure, combined with the appendix Figure 3 and attached Figure 4As shown, in some embodiments, the pressure-bearing adapter 370 includes a receiving chamber 374, a hardening component 371, a limiting component 372, and an elastic sleeve 376. The elastic sleeve 376 is connected to the top of the receiving chamber 374, the hardening component 371 is inserted into the interior of the receiving chamber 374, and the limiting component 372 is connected to the receiving chamber 374. The limiting component 372 has the function of limiting the upward angle of the hardening component 371. The elastic sleeve 376 is made of an elastic material. A guide groove 375 is formed on the inner wall of the receiving chamber 374. The guide groove 375 is used to guide the granular solids in the receiving chamber 374. For example, the granular solid can be rubber granules. The mounting buckle 377 secures the elastic sleeve 376 to the receiving chamber 374. For example, the mounting buckle 377 uses multiple threaded connections to limit and fix the elastic sleeve 376. The hardened component 371 is inserted into the receiving chamber 374. The support member 360 drives the hardened component 371 to rise, compressing the granular solid in the receiving chamber 374. When the granular solid is compressed against the elastic sleeve 376, it fully conforms to the shape of the camshaft workpiece x, improving the stability of the camshaft workpiece x. The receiving chamber 374... A rotating latch 373 is fixedly connected to the wall. The rotating latch 373 is used to limit the hardened component 371, preventing it from falling out of the receiving chamber 374. The rotating latch 373 can be rotated to release the limitation on the hardened component 371. The elastic sleeve 376 is made of an elastic material; for example, the elastic sleeve 376 is addition-cured silicone rubber. Of course, other methods or materials can be used in the various examples shown above, and can be changed according to specific circumstances. This application does not limit this. In other embodiments, the hardened component 371 can also be hardened by vacuum suction. Some limitations are... The granular solids in the receiving chamber 374 and the elastic sleeve 376 need to be relatively numerous. At this time, the granular solids cause the elastic sleeve 376 to bulge. When the support member 360 drives the elastic sleeve 376 to rise and contact the camshaft workpiece x, the hardening member 371 vacuums the receiving chamber 374. During this process of reducing the gas between the granular solids, the elastic sleeve 376 will shrink. Since it is in contact with the camshaft workpiece x, it will conform to the deformation of the camshaft workpiece x. The outer wall of the receiving chamber 374 is provided with a feed port 378 for loading granular solids.
[0028] Figure 5 It shows Figure 4 The structural diagrams of the connecting pipe 37103 and the circular pipe 37104 are shown in the attached diagram. Figure 4As shown, in some embodiments, the hardening component 371 includes a tortuous tube 37101, an extrusion plate 37102, a connecting tube 37103, and a circular tube 37104. The tortuous tube 37101 is connected to the extrusion plate 37102, the circular tube 37104 is connected to the outer ring of the extrusion plate 37102, and the connecting tube 37103 connects the circular tube 37104 and the hardening component 371. The tortuous tube 37101, the connecting tube 37103, and the circular tube 37104 are internally connected. Both 7104 and the tortuous tube 37101 are elastic materials. In the first stage, when the supporting member 360 squeezes the tortuous tube 37101, the gas in the tortuous tube 37101 will enter the circular tube 37104 through the hardened member 371. At this time, the increase in gas in the circular tube 37104 will cause it to bulge, and then fully adhere to the inner wall of the receiving chamber 374 and the extrusion plate 37102, ensuring the interception of most particulate solids. In the second stage, the supporting member 360 squeezes the tortuous tube 37101... After the tortuous tube 37101 is fully contracted by compression, the extrusion force generated by the support member 360 will act on the extrusion plate 37102. At this time, the extrusion plate 37102 rises in the receiving chamber 374, and then extrudes the granular solids in the receiving chamber 374 into the elastic sleeve 376. The elastic sleeve 376 has greater toughness than the circular tube 37104. During the rising process of the extrusion plate 37102 and the extrusion process of the gas in the receiving chamber 374, some of the gas will compress the circular tube 37104 slightly. The extrusion plate 37102 stops when it moves to the guide groove 375. The rising height of the tortuous tube 37101 is preset in the support member 360. The granular solid extrudes the elastic sleeve 376. At this time, the upper part of the elastic sleeve 376 is in contact with the camshaft workpiece x. The elastic sleeve 376 and the granular solid inside form a solid that fits the shape of the camshaft workpiece x, which is used to support the camshaft workpiece x. In some embodiments, the limiting member 372 includes a ring 37201, a cylinder 37202, a first spring 37203, and a mounting rod 37204. The ring 37201 is connected to the outer wall of the receiving chamber 374. The bottom of the ring 37201 is connected to the first spring 37203, and the bottom of the first spring 37203 is connected to the mounting rod 37204. The cylinder 37202 is connected to the ring 37201 and inserted into the ring 37201. When the cylinder 37202 is inserted into the ring 37201, it serves to limit the upward movement of the hardened member 371.
[0029] Figure 6 It shows Figure 1Another perspective schematic diagram shows that in some embodiments, the placement seat 100 includes a placement frame 110, a door panel 120, a caster wheel 130, and a support leg 140. The door panel 120 is rotatably connected to the placement frame 110, the caster wheel 130 is connected to the bottom of the placement frame 110, and the support leg 140 is also connected to the bottom of the placement frame 110. The support leg 140 can be adjusted in height. When the support leg 140 is higher than the caster wheel 130, the support leg 140 supports the placement frame 110. When the support leg 140 is adjusted to be lower than the caster wheel 130, the placement frame 110 can be moved by the caster wheel 130, and the door panel 120 can be opened and closed.
[0030] Figure 7 It shows Figure 1 The diagram showing the removal of door panel 120 is combined with... Figure 6 In some embodiments, the auxiliary measuring fixture 10 further includes a control component 200, which includes an alarm 210, a display 220, a controller 230, and a vibration sensor 240. The display 220 is connected to the placement rack 110, the alarm 210 is connected to the top of the placement rack 110, the controller 230 is connected to the placement rack 110, and the vibration sensor 240 is connected inside the placement rack 110. The controller 230 can control the start and stop of each device and can also set the start length or amplitude of each device. The display 220 can display the working status of each device. The vibration sensor 240 monitors the vibration during the working process, can preset the vibration amplitude, and then remind the user through the alarm 210. For example, when a large vibration is encountered, it indicates a problem in the measurement of the camshaft workpiece x, and the alarm 210 can be used to remind the user.
[0031] Figure 8 An assembly diagram of the auxiliary device 300 and the clamping device 400 is shown. Figure 9 The diagram shows an assembly schematic of the hardness tester 310 with the first assembly 320 and the moving part 330, combined with... Figure 8 as well as Figure 9In some embodiments, the auxiliary device 300 further includes a first mounting part 320 and a moving part 330. The first mounting part 320 is connected between the hardness component 310 and the measuring platform of the placement seat 100, and is used to adjust the position of the hardness component 310. The moving part 330 is connected between the support member 360 and the measuring platform of the placement seat 100, and is used to adjust the position of the pressure-bearing adapter 370. The first mounting part 320 facilitates the assembly and disassembly of the hardness component 310. The hardness component 310 is a commercially available type. The first mounting part 320 facilitates the assembly and disassembly of the first mounting part 320. Replacement: The first assembly 320 can change the position of the hardening component 310, and can be adapted to hardening components 310 of different sizes or shapes available on the market. The moving part 330 can change the different positions of the pressure-bearing adapter 370. Some existing hardening components 310 have the function of moving the measuring part to measure different positions on the camshaft workpiece x. The setting of the moving part 330 can be adapted to such existing equipment. In other embodiments, the first assembly 320 is also connected to the moving part 330. When the moving part 330 moves the pressure-bearing adapter 370, it also moves the hardening component 310 together, thereby measuring different positions of the camshaft. In some embodiments, the first assembly 320 includes a first limiting buckle 321, a first limiting rod 322, a bolt 323, and a first bracket 324. The first limiting buckle 321 is connected to the hardness component 310, the first limiting rod 322 is connected to the first bracket 324, the bolt 323 is threadedly connected to the first limiting rod 322, and the first bracket 324 is connected to the measuring platform of the placement seat 100. In use, the first limiting buckle 321 is fixed to the hardness component 310, and the hardness component 310 is secured to the first limiting rod 322 by the first limiting buckle 321. After moving to a suitable position, the bolt 323 rotates and abuts against the hardness component 310, thereby fixing the hardness component 310. This facilitates changing the position of the hardness component 310 and also facilitates disassembly and assembly. To replace the required hardness component 310, simply install the first limiting buckle 321 on the hardness component 310. In some embodiments, the moving part 330 includes a second bracket 331, a first drive motor 332, a first slider 333, and a first slide rail 334. Multiple second brackets 331 are respectively connected to the first drive motor 332 and the first slide rail 334. The first slider 333 is slidably connected to the first slide rail 334. The first drive motor 332 is connected to the first slider 333 via its own telescopic shaft. When the first drive motor 332 is powered on, it causes the first slider 333 to move on the first slide rail 334. The movement of the first slider 333 changes the position of the pressure-bearing adapter 370. In other embodiments, the first bracket 324 is connected to the first slider 333. When the first slider 333 causes the pressure-bearing adapter 370 to move, the hardening component 310 is also moved, thereby measuring different positions of the camshaft.
[0032] Figure 10 This diagram shows the assembly schematic of the second assembly 340, the connector 350, and the support member 360. Figure 4 In some embodiments, the auxiliary device 300 further includes a second assembly 340 and a connector 350. The connector 350 is connected to the second assembly 340. The second assembly 340 and the connector 350 are connected between the support member 360 and the moving part 330. The second assembly 340 is used for assembling and disassembling the support member 360. The connector 350 is used for connecting the support member 360 and the second assembly 340. The support member 360 can be disassembled through the second assembly 340, which facilitates the maintenance and repair of the support member 360 and the pressure-bearing adapter 370. The second assembly 340 includes a second limiting rod 343, a second limiting buckle 342, and a connecting rod 341. The connector 350 includes a vertical plate 351 and a horizontal plate 352. The connecting rod 341 is connected to the first slider 333, and the second limiting buckle 342 is connected to the connecting rod 341. 43 is slidably connected to the second limiting rod 343. The second limiting buckle 342 is also threaded with a bolt 323 for limiting the second limiting rod 343. The vertical plate 351 is connected to the second limiting rod 343, and the horizontal plate 352 is connected to the vertical plate 351. Both the vertical plate 351 and the horizontal plate 352 are connected to the electric push rod cylinder 361. The second limiting rod 343 is located on the second limiting buckle 342 and can be locked and then moved. The second limiting rod 343 is limited by the bolt 323 on the second limiting buckle 342. The support component 360 includes an electric push rod cylinder 361, a connecting ring 362 and a connecting rod 363. The connecting ring 362 is connected to the electric push rod cylinder 361, and the connecting rod 363 is connected to the curved tube 37101. The connecting rod 363 is connected to the connecting ring 362. The electric push rod cylinder 361 uses an existing device to drive the pressure-bearing adapter 370 to rise or fall.
[0033] Figure 11 It shows Figure 1A schematic diagram of the clamping device 400 is shown in the figure. In some embodiments, the auxiliary measuring fixture 10 further includes a clamping device 400. The clamping device 400 includes a z-axis moving member 420, a clamping part 450, a y-axis moving member 440, and a clamping member 460. The z-axis moving member 420 is connected to the measuring platform of the placement seat 100, the y-axis moving member 440 is connected to the z-axis moving member 420, the clamping part 450 is connected to the y-axis moving member 440, and the clamping member 460 is connected to the clamping part 450. The z-axis moving member 420 is used to drive the camshaft workpiece x to move vertically, and the y-axis moving member 440 is used to drive the camshaft workpiece x to move laterally. The clamping part 450... 50 is used to drive the clamping member 460 to clamp the camshaft workpiece x. The camshaft workpiece x is clamped in the clamping member 460. The clamping part 450 can drive the two clamping members 460 to clamp the camshaft workpiece x. The y-axis moving member 440 can drive the camshaft workpiece x to move laterally. The z-axis moving member 420 can drive the camshaft workpiece x to move vertically, thereby changing the position of the camshaft workpiece x. This makes it easier for the camshaft workpiece x to change position and be tested by the auxiliary device 300. The clamping device 400 also includes a mounting bracket 410. The mounting bracket 410 is connected between the z-axis moving member 420 and the measuring platform of the placement seat 100 for installing and fixing the z-axis moving member 420.
[0034] Figure 12 It shows Figure 11 The enlarged diagram of BB in the image, combined with Figure 11 In some embodiments, the clamping part 450 includes a first motor 451, a screw 453, a driving component 454, and a guide rail 455. The screw 453 is rotatably connected to the first motor 451, and the driving component 454 is disposed on the screw 453. The first motor 451 is connected to the y-axis moving member 440, and the guide rail 455 is also connected to the y-axis moving member 440. The driving component 454 includes a passive block 45401, a threaded hole 45402, an extension bracket 45403, and a limiting hole 45404. The threaded hole 45402 is formed in the passive block 45401, and the limiting hole 45404 is formed in the extension bracket 45403. The passive block 45401 is connected to the extension bracket 45403. 45401 is threadedly connected to the screw 453 through the threaded hole 45402. The driving component 454 is inserted into the limiting hole 45404 of the extension frame 45403. The first motor 451 is connected to the y-direction moving component 440 through the third bracket 452. When the first motor 451 is powered on, it will drive the screw 453 to rotate. The screw 453 is threadedly engaged with the threaded hole 45402 on the passive block 45401, which will drive the driving component 454 to move. The extension frame 45403 is sleeved on the guide rail 455 through the limiting hole 45404, thereby maintaining the moving direction of the extension frame 45403. Through the two sets of driving components 454, the clamping component 460 connected to it can move to clamp the camshaft workpiece x.
[0035] Figure 13 It shows Figure 11 In the enlarged schematic diagram AA, in some embodiments, the clamping part 450 further includes a locking member 456, which includes a locking rod 45601 and a locking plate 45602. The two locking rods 45601 are respectively connected to the two screws 453, and the locking plate 45602 is inserted between the two locking rods 45601. After the clamping part 450 drives the clamping member 460 to clamp the camshaft workpiece x, in order to prevent the screws 453 from rotating in the opposite direction and causing the clamping of the camshaft workpiece x to be unstable, the locking plate 45602 is inserted into the locking rods 45601. The restriction of the locking plate 45602 on the locking rods 45601 can prevent the screws 453 from rotating again and maintain the clamping force on the camshaft workpiece x.
[0036] Figure 14 An assembly diagram of the connecting part 430 and the z-axis moving part 420 is shown, in conjunction with... Figure 12 In some embodiments, the clamping part 450 includes a second drive 421, a second slider 422, and a second slide rail 423; the y-axis moving member 440 includes a third slide rail 441, a third slider 442, a third drive 443, and a drive component 444; the clamping device 400 further includes a connecting part 430, which includes a following plate 432 and a fixing plate 431. The second slide rail 423 is connected to the mounting bracket 410; the second drive 421 is connected to the second slide rail 423; the second slider 422 is slidably connected to the second slide rail 423; the following plate 432 is connected to the second slider 422; the fixing plate 431 is connected to the following plate 432; and the drive component 444 is connected to the fixing plate 431. 1. The third drive motor 443 is movably connected to the drive motor component 444. The third slide rail 441 is connected to the fixed plate 431. The third slider 442 is slidably connected to the third slide rail 441. The third slider 442 is connected to the third drive motor 443. The third bracket 452 is connected to the third slider 442. When the second drive motor 421 is powered on, it will drive the second slider 422 to move up and down. The second slider 422 slides on the second slide rail 423, changing the up and down movement of the camshaft workpiece x. When the third drive motor 443 is powered on, it moves back and forth on the drive motor component 444, thereby changing the active position of the third slider 442 on the third slide rail 441, thereby changing the lateral movement of the camshaft workpiece x.
[0037] Figure 15A schematic diagram of the assembly of the extender 45403 and the clamping member 460 is shown. In some embodiments, the clamping member 460 includes a bearing 461 and a retainer 462. The bearing 461 is connected to the extender 45403, and the retainer 462 is connected to the bearing 461. Retainers 462 are provided on both sides. The retainers 462 can clamp the camshaft workpiece x. The retainers 462 can be rotated through the connection of the bearing 461, which facilitates the adjustment of the direction of the camshaft workpiece x.
[0038] Figure 16 It shows Figure 15 The sectional view diagram, combined with Figure 16 The supporting member 462 includes a second motor 46201, a conical block 46202, a second spring 46203, a mounting base 46204, and an interlaced rod 46205. The conical block 46202 is connected to the extension frame 45403, and the second motor 46201 is connected to the conical block 46202. The second motor 46201 is connected to the supporting member 462 via its own rotation shaft. The supporting member 462 has a hole inside, and the second spring 46203 and the interlaced rod 46205 are disposed in the hole of the supporting member 462. The interlaced rod 46205 is connected to the second spring 46203. Mounting bracket 46204 is connected between support member 462 and second spring 46203. During use, when camshaft workpiece x contacts support member 462, staggered rod 46205 will also contact camshaft workpiece x. During the process of the two contacting each other, staggered rod 46205 will slightly retract into the hole of support member 462. At this time, staggered rod 46205 will squeeze second spring 46203, thereby causing staggered rod 46205 to fit against camshaft workpiece x under the elasticity of second spring 46203, which increases the friction between the two and improves the stability when driving camshaft workpiece x to turn.
[0039] In this application, it should be clarified that when the electric push rod cylinder 361 drives the camshaft workpiece x to move upward, when the position of the camshaft workpiece x that needs to be hardened is about to contact the measuring part of the hardening component 310, the electric push rod cylinder 361 needs to slowly apply an initial load to the camshaft workpiece x, confirm that the pointer of the load indicator on the hardening component 310 is in the specified area, and only then does the hardening process begin.
[0040] The hardness component 310 uses a commercially available device. For example, the hardness component 310 can be a Rockwell hardness tester, which is equipped with a load indicator. The measurement method of the Rockwell hardness tester can be: The electric push rod cylinder 361 drives the camshaft workpiece x to move upward. Under the mutual compression of the measuring part of the hardness component 310, an initial load is applied. After the small pointer of the load indicator reaches the red dot, the hardness component 310 starts to generate the main load and measures the camshaft workpiece x.
[0041] After the hardness component 310 reaches saturation, the large pointer on the dial stops moving. The hardness component 310 is then unloaded via the control unit 200, and the hardness value is read.
[0042] Record the experimental data and determine the experimental results.
[0043] A hardness tester auxiliary measuring fixture has at least the following effects when in use: By incorporating a liftable support component 360 and a pressure-bearing adapter 370, it can accommodate camshaft workpieces x of different diameters for bottom support. The pressure-bearing adapter 370 has an internal structure of granular solid and elastic sleeve 376, which can flow and conform to the complex contour shape of the camshaft workpiece x under pressure, forming a stable and customized support surface. This helps to reduce workpiece displacement or vibration during the measurement process, providing a stable foundation for hardness measurement.
[0044] By setting up a clamping device 400 that can move horizontally and vertically and a pusher 462 that can rotate the workpiece, the operator can easily adjust the spatial position and orientation of the camshaft workpiece x, so that the hardness of different shaft segments or circumferential positions of the workpiece can be measured without repeated disassembly and assembly, thus improving measurement efficiency and ease of operation.
[0045] The tooling integrates a placement base 100, an auxiliary device 300, a clamping device 400, and a control component 200, resulting in a compact structure. The control component 200 coordinates the actions of each component and monitors abnormal vibrations via an intelligent sensor, namely a vibration sensor 240, triggering an alarm via an alarm device 210. This reduces the difficulty of operation and improves the controllability and safety of the measurement process.
[0046] The granular solids in the pressure-bearing adapter 370 containing the chamber 374 can uniformly transmit pressure under the extrusion plate 37102, and the workpiece is flexibly wrapped by the elastic sleeve 376, which increases the support contact area and helps to make the workpiece more uniformly stressed during measurement, which may reduce measurement errors or workpiece surface damage caused by local stress concentration.
[0047] The clamping part 450 employs a centering clamping method driven by a first motor 451 and driven by a screw 453, ensuring controllable and stable clamping force. The second spring 46203 and the interlaced rod 46205 structure inside the supporting member 462 provide elastic preload during clamping, increasing friction with the workpiece surface and preventing slippage during workpiece rotation, thus ensuring reliable positioning. Simultaneously, the design of the first mounting part 320 and the second mounting part 340 facilitates the disassembly, assembly, and position adjustment of the hardness component 310 and the support member 360, enhancing the tooling's compatibility with different models of hardness testers.
[0048] Easy to move and fix: The bottom of the placement base 100 is equipped with height-adjustable support legs 140 and casters 130, which can easily move the entire tooling or stably support it in the working position as needed, increasing the flexibility of equipment layout.
[0049] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0050] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0051] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0052] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0053] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. An auxiliary measuring fixture for a hardness tester, characterized in that, include: Placement base (100); An auxiliary device (300) includes a hardness component (310), a support member (360), and a pressure-bearing adapter (370). The placement seat (100) has a measuring platform. The hardness component (310) is connected to the measuring platform of the placement seat (100). The support member (360) is also connected to the measuring platform of the placement seat (100). The pressure-bearing adapter (370) is connected to the support member (360). The support member (360) is used to drive the pressure-bearing adapter (370) to rise and fall. The hardness component (310) has a measuring part. The pressure-bearing adapter (370) and the measuring part of the hardness component (310) are vertically opposite each other. A camshaft workpiece (x) is provided between the pressure-bearing adapter (370) and the measuring part of the hardness component (310). The pressure-bearing adapter (370) conforms to the shape of the camshaft workpiece (x).
2. The auxiliary measuring fixture for a hardness tester according to claim 1, characterized in that, The pressure-bearing adapter (370) includes a receiving chamber (374), a hardening component (371), a limiting component (372), and an elastic sleeve (376). The elastic sleeve (376) is connected to the top of the receiving chamber (374), the hardening component (371) is inserted into the interior of the receiving chamber (374), the limiting component (372) is connected to the receiving chamber (374), and the limiting component (372) has the function of limiting the rising angle of the hardening component (371). The elastic sleeve (376) is made of an elastic material.
3. The auxiliary measuring fixture for a hardness tester according to claim 2, characterized in that, The hardening component (371) includes a tortuous tube (37101), an extrusion plate (37102), a connecting tube (37103), and a circular tube (37104). The tortuous tube (37101) is connected to the extrusion plate (37102), the circular tube (37104) is connected to the outer ring of the extrusion plate (37102), and the connecting tube (37103) is connected between the circular tube (37104) and the hardening component (371). The tortuous tube (37101), the connecting tube (37103), and the circular tube (37104) are internally connected.
4. The auxiliary measuring fixture for a hardness tester according to any one of claims 103, characterized in that, The auxiliary device (300) further includes a first assembly (320) and a moving part (330). The first assembly (320) is connected between the hardness component (310) and the measuring platform of the placement seat (100), and the first assembly (320) is used to adjust the position of the hardness component (310). The moving part (330) is connected between the support member (360) and the measuring platform of the placement seat (100), and the moving part (330) is used to adjust the position of the pressure-bearing adapter (370).
5. The auxiliary measuring fixture for a hardness tester according to claim 4, characterized in that, The moving part (330) includes a second bracket (331), a first drive motor (332), a first slider (333), and a first slide rail (334). A plurality of second brackets (331) are respectively connected to the first drive motor (332) and the first slide rail (334). The first slider (333) is slidably connected to the first slide rail (334). The first drive motor (332) is connected to the first slider (333) through its own telescopic shaft.
6. The auxiliary measuring fixture for a hardness tester according to claim 1, characterized in that, The auxiliary device (300) further includes a second assembly (340) and a connector (350), the connector (350) being connected to the second assembly (340), the second assembly (340) and the connector (350) being connected between the support member (360) and the moving part (330), the second assembly (340) being used for assembling and disassembling the support member (360), and the connector (350) being used for connecting between the support member (360) and the second assembly (340).
7. The auxiliary measuring fixture for a hardness tester according to claim 1, characterized in that, The auxiliary measuring fixture 10 further includes a clamping device (400), which includes a z-axis moving member (420), a clamping part (450), a y-axis moving member (440), and a clamping member (460). The z-axis moving member (420) is connected to the measuring platform of the placement seat (100), the y-axis moving member (440) is connected to the z-axis moving member (420), the clamping part (450) is connected to the y-axis moving member (440), and the clamping member (460) is connected to the clamping part (450). The z-axis moving member (420) is used to drive the camshaft workpiece (x) to move vertically, the y-axis moving member (440) is used to drive the camshaft workpiece (x) to move laterally, and the clamping part (450) is used to drive the clamping member (460) to clamp the camshaft workpiece (x).
8. The auxiliary measuring fixture for a hardness tester according to claim 7, characterized in that, The clamping part (450) includes a first motor (451), a screw (453), a driving component (454), and a guide rail (455). The screw (453) is rotatably connected to the first motor (451), and the driving component (454) is disposed on the screw (453). The first motor (451) is connected to the y-axis moving member (440), and the guide rail (455) is also connected to the y-axis moving member (440). The driving component (454) includes a passive block (45401) and a threaded hole (45401). 45402), extension bracket (45403) and limiting hole (45404), the threaded hole (45402) is opened on the passive block (45401), the limiting hole (45404) is opened on the extension bracket (45403), the passive block (45401) is connected to the extension bracket (45403), the passive block (45401) is threadedly connected to the screw (453) through the threaded hole (45402), and the driving component (454) is inserted into the limiting hole (45404) of the extension bracket (45403).
9. The auxiliary measuring fixture for a hardness tester according to claim 8, characterized in that, The clamping part (450) further includes a locking member (456), which includes a locking rod (45601) and a locking plate (45602). The two locking rods (45601) are respectively connected to the two screws (453), and the locking plate (45602) is inserted between the two locking rods (45601).
10. The auxiliary measuring fixture for a hardness tester according to any one of claims 709, characterized in that, The clamping member (460) includes a bearing (461) and a retaining member (462). The bearing (461) is connected to the extension frame (45403), and the retaining member (462) is connected to the bearing (461). The retaining member (462) includes a second motor (46201), a conical block (46202), a second spring (46203), a mounting base (46204), and an interlaced rod (46205). The conical block (46202) is connected to the extension frame (45403), and the second motor... The motor (46201) is connected to the conical block (46202). The second motor (46201) is connected to the support member (462) through its own rotating shaft. The support member (462) has a hole inside. The second spring (46203) and the staggered rod (46205) are disposed in the hole of the support member (462). The staggered rod (46205) is connected to the second spring (46203). The mounting base (46204) is connected between the support member (462) and the second spring (46203).