Visual brinell hardness tester with double objective lenses and three pressure heads

Abstract

The utility model relates to a double-objective-lens three-pressure-head visual brinell hardness tester which comprises a shell, a turntable housing is arranged at the inner top of the shell, and a rotatable five-functional-position turret mechanism is arranged in the turntable housing. According to the utility model, by adopting the five-functional position turret mechanism, the rapid switching of the objective lens and the pressure head is realized, so that the test efficiency is greatly improved, meanwhile, the design of the double objective lenses enables the hardness tester to observe indentations under different magnification times, the measurement accuracy and flexibility are improved, and the test efficiency is improved. The design of the three detection pressure heads enables the durometer to easily adapt to different test requirements without replacement, the arrangement of the camera mechanism enables the test process to be recorded in real time and facilitates subsequent data analysis and processing, the host is used as the core of the control system and can realize automatic control of the whole test process, and the display is embedded in the face frame, so that the whole test process is more convenient. Therefore, the user can visually see real-time data in the testing process, and the operation is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of brinell hardness tester, especially to a double objective lens three pressure head vision brinell hardness tester. BACKGROUND

[0002] The brinell hardness tester is a commonly used testing equipment in the field of material science, which is used for measuring the hardness of materials. The traditional brinell hardness tester usually adopts a single objective lens and pressure head, and the testing efficiency and accuracy are limited. With the development of technology, multi-lens and multi-pressure head brinell hardness testers have appeared in the market, but these devices still have some shortcomings in structure design and function implementation. The existing multi-lens brinell hardness tester is often not flexible and accurate in switching and positioning of the objective lens, which affects the stability and repeatability of the test results. At the same time, the configuration and adjustment of the pressure head are relatively complex, and the operation is not convenient. In addition, the existing brinell hardness tester often relies on manual operation for device control and data processing, which is low in efficiency and prone to errors. SUMMARY

[0003] Therefore, the utility model aims to provide a double objective lens three pressure head vision brinell hardness tester with multiple measurement functions, simple operation, high measurement accuracy and automatic control.

[0004] In order to achieve the above purpose, the utility model adopts a double objective lens three pressure head vision brinell hardness tester, which comprises a shell. The front surface of the shell is provided with a face frame. The face frame is embedded with a display. The inner top of the shell is provided with a turntable cover. A five-function position turret mechanism is arranged in the turntable cover. A camera mechanism is arranged on one side of the five-function position turret mechanism. The lens end of the camera mechanism extends into the face frame through a through slot between the face frame and the turntable cover. A main shaft mechanism is arranged in the shell. One end of the main shaft mechanism is connected with the five-function position turret mechanism. A lever mechanism is arranged on one side of the main shaft mechanism. A platform lifting mechanism is arranged at the inner bottom of the shell. The platform lifting mechanism is arranged on the vertically opposite side of the five-function position turret mechanism. A main machine is arranged in the shell.

[0005] The above structure has the following advantages. The five-function position turret mechanism is adopted to realize the rapid switching of the objective lens and the pressure head, thereby greatly improving the testing efficiency. The design of the double objective lens enables the hardness tester to observe the indentation at different magnifications, improving the accuracy and flexibility of the measurement. The design of the three detection pressure heads enables the hardness tester to easily adapt to different testing requirements without the need for replacement. The arrangement of the camera mechanism enables the testing process to be recorded in real time, which is convenient for subsequent data analysis and processing. The main machine as the core of the control system can realize the automatic control of the entire testing process. The display is embedded in the face frame, enabling the user to intuitively see the real-time data during the testing process, and the operation is more convenient.

[0006] The utility model further sets up five function position turntable mechanism including support plate, turntable motor connection mechanism installed one side of support plate upper surface and five function position turntable subassembly set in support plate below, five function position turntable subassembly includes turntable, the central shaft subassembly set up in turntable, first objective lens and second objective lens and first detection pressure head subassembly, second detection pressure head subassembly and third detection pressure head subassembly are connected in turntable around, one end of central shaft subassembly is connected with support plate, and the other end extends to the outside of turntable cover shell through the central mouth of turntable. The design of five function position turntable mechanism makes it possible to realize multiple test functions on the same equipment, thereby avoiding the cumbersome process of replacing equipment, and by simply rotating the turntable, the required functional components can be quickly switched, greatly improving the test efficiency.

[0007] The utility model further sets up camera mechanism including ocular adjustment block installed opposite another side of support plate upper surface, ocular adjustment piece installed one side of ocular adjustment block, ocular block installed one side of ocular adjustment piece, front fixed pipe is inserted on ocular block, mirror frame is set up one side of front fixed pipe, rear fixed pipe is set up one end of mirror frame, CCD camera is set up one end of rear fixed pipe, the end of front fixed pipe extends into mirror frame, the opening of mirror frame is covered with first mirror cover, first mirror cover is equipped with first mirror, one end of rear fixed pipe extends into mirror frame, and the other end is connected in CCD camera, one end of CCD camera is also equipped with data socket, the position of auxiliary mirror frame is installed on turntable corresponding front fixed pipe, third objective lens is installed on auxiliary mirror frame. Through the combination use of ocular adjustment block, ocular adjustment piece and ocular block, the accurate adjustment of observation focal length and definition can be realized, the precision and accuracy of observation are improved, the design of mirror frame and first mirror makes light rays can spread according to predetermined path, avoids the loss and interference of light rays, improves the stability and reliability of optical system, CCD camera has the characteristics of high sensitivity and high resolution, can clearly capture the observed image details, provides high-quality image data for subsequent image analysis and processing, through the installation auxiliary mirror frame and third objective lens, make camera mechanism can be applicable to different observation needs, enhance the flexibility and adaptability of equipment.

[0008] The utility model further sets up to first detection pressure head subassembly and second detection pressure head subassembly and third detection pressure head subassembly all include the linear motion ball bearing of installation on the turret, and the detection pressure head rod of the inner race of linear motion ball bearing is worn, the top of detection pressure head rod is fixed with pressure head rod cap, the end of detection pressure head rod is inserted and is connected with steel ball pressure head, the linear motion ball bearing with pressure head rod cap between be equipped with spring washer, spring washer is respectively close to the top of linear motion ball bearing and the below of pressure head rod cap, spring is installed between spring washer, the detection pressure head rod in the one end of steel ball pressure head still sets up the adjusting ring, the observation end of first objective and second objective and the steel ball pressure head end of first detection pressure head subassembly and second detection pressure head subassembly all extend outside the disc cover. Through the combination design of linear motion ball bearing and spring washer, the stability and accuracy of detection pressure head in the testing process are ensured, the necessary resilience is provided by the setting of spring, avoids the test error caused by the excessive depression of pressure head, the height and position of detection pressure head can be fine tuned with the equipment of adjusting ring, to adapt to the test material of different thickness and hardness.

[0009] The utility model further sets up to platform lifting mechanism includes the screw rod subassembly of installation in the bottom of shell, hand wheel and with screw rod subassembly links lifting platform, the screw rod subassembly includes fixed in the bottom of shell screw rod axle sleeve, the screw rod of wearing in screw rod axle sleeve, with screw rod cooperation screw rod nut, one side of screw rod axle sleeve is equipped with motor drive arrangement installed in the shell, the motor drive arrangement includes motor mounting plate, fixed driving motor on motor mounting plate and with driving motor output shaft links drive pulley, hand wheel is installed on the screw rod, and is located the above of screw rod axle sleeve, and is connected with drive pulley through transmission belt, the shell is equipped with screw rod cover above screw rod subassembly, the screw rod cover covers screw rod and hand wheel and drive pulley, the screw rod cover is opened screw rod mouth for the movement of screw rod, the top of screw rod is connected with lifting platform threadedly. Platform lifting mechanism realizes the function of lifting through screw rod subassembly, and the precision cooperation of screw rod nut and screw rod ensures the high accuracy and stability in the process of lifting, makes lifting platform can move smoothly, accurately in the vertical direction, thereby guarantees the accurate control of sample position in the hardness test process, the introduction of motor drive arrangement makes platform lifting mechanism can realize the electric lifting through driving motor, improves test efficiency, the setting of screw rod cover not only covers screw rod, hand wheel and drive pulley, prevents the invasion of dust and sundries, simultaneously, the smoothness of screw rod in the movement process is ensured by the screw rod mouth opened on the screw rod cover, avoids the lifting failure caused by friction or jam.

[0010] The utility model further sets up as first objective lens and second objective lens are all corresponded with mirror assembly in one end location support board, mirror assembly includes mirror cover and sets up second mirror in mirror cover lower extreme, the mirror cover is connected through first stand between the turret. Through setting up mirror assembly, make light ray can be more accurately projected after reflection to objective lens, to improve the precision and accuracy of observation, mirror assembly is connected with the turret through first stand, make it can rotate along with the rotation of turret, to realize the coverage of different observation angle, the design of mirror cover effectively protects second mirror, prevents its from the pollution and damage of dust, sundries etc, prolongs the service life of mirror.

[0011] The utility model further sets up as the turret motor connecting mechanism includes the turret motor connecting plate of installing one side of support board upper surface, install motor support on the turret motor connecting plate, install the turret motor between motor support and turret motor connecting plate, the motor axle end of turret motor is connected with small pulley. Through install the turret motor connecting plate on support board, and use motor support to fix, improve the stability of whole turret motor connecting mechanism, the motor axle end of turret motor is connected with small pulley, can realize efficient transmission.

[0012] The utility model further sets up as still including hall installation piece and power supply installation board in the shell, hall installation piece is located one side of lever assembly, and installs on the inner wall of shell, one end of hall installation piece is fixed with hall support, open the circular slot on hall support, be equipped with hall switch in the circular slot, hall switch is clamped on hall support through nut, power supply installation board installs on the inner wall of shell opposite to hall installation piece. Through the design of hall installation piece and hall support and hall switch on it, it can perceive the displacement or rotation state of lever assembly, and feed back to control system through the form of electric signal, make that sclerometer can real -time, accurately monitor the motion state of lever assembly, to realize accurate control to measurement process, the design of power supply installation board provides stable power supply support for sclerometer, it can transmit power signal to each component that needs power supply, ensure the normal operation of sclerometer.

[0013] The utility model further sets up as the side wall of support board and installs the photoelectric fixed piece on the mounting surface of facing one end of turret, installs the photoelectric switch on the photoelectric fixed piece, still installs the positioning support on the mounting surface of facing one end of support board of turret, installs the positioning piece on the positioning support, installs the steel ball positioning block on the positioning piece, the steel ball positioning block is opened with hole, and the hole is embedded with steel ball, installs the positioning needle on the turret. Through adding photoelectric fixed piece and photoelectric switch, in combination with the positioning needle on the turret, accurate position feedback mechanism is provided for the turret, when the turret rotates to the specified position, the positioning needle can accurately trigger the photoelectric switch, thereby ensuring accurate positioning of the turret in the measurement or observation process, the design of positioning support, positioning piece and steel ball positioning block realizes accurate positioning of the steel ball through the cooperation of steel ball and hole, not only improves the positioning accuracy, but also enhances the positioning stability, so that the turret can maintain accurate position during rotation or movement.

[0014] The utility model further sets up that the upper cover plate and rear cover plate and side cover plate are still covered and are equipped with on the casing, the side cover plate is equipped with triangle switch and at least one data interface respectively, the bottom of casing still is equipped with bottom foot. Through the setting of upper cover plate, rear cover plate and side cover plate, the closed space is formed, effectively prevent dust, moisture and other external factors from invading the equipment inside, avoid the equipment failure or damage caused by short circuit, corrosion and other reasons, the introduction of triangle switch makes the equipment can control the on-off of multiple circuits simultaneously, improves the flexibility and convenience of equipment, the setting of data interface makes the equipment can carry out data transmission and communication with external equipment or system, the setting of bottom foot makes the sclerometer can be placed on the horizontal plane stably, avoids the shaking or inclination caused by uneven ground. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structure schematic diagram of the utility model embodiment.

[0016] Figure 2 It is the internal structure schematic diagram of the utility model embodiment.

[0017] Figure 3 It is the platform lifting mechanism explosion schematic diagram of the utility model embodiment.

[0018] Figure 4 It is the five functional position turret mechanism explosion schematic diagram of the utility model embodiment.

[0019] Figure 5 It is the detection pressure head assembly explosion schematic diagram of the utility model embodiment.

[0020] Figure 6 It is the structure schematic diagram of reflector assembly on the turret of the utility model embodiment.

[0021] Figure 7 is a structure schematic view of the eyepiece mechanism and the third objective lens of the utility model embodiment.

[0022] Figure 8 is an explosion schematic view of the eyepiece mechanism of the utility model embodiment.

[0023] Figure 9 is an explosion schematic view of the Hall mounting block, power supply mounting plate and shell of the utility model embodiment.

[0024] Figure 10 is a Hall switch mounting structure side view on the Hall mounting block of the utility model embodiment.

[0025] Figure 11 is an explosion schematic view of the support plate and the turret of the utility model embodiment.

[0026] Figure 12 is an explosion schematic view of the main shaft mechanism of the utility model embodiment.

[0027] Figure 13 is a front view of the main shaft mechanism of the utility model embodiment.

[0028] Figure 14 is a cooperation side view of the main shaft mechanism and the lever mechanism of the utility model embodiment.

[0029] Figure 15 is a three-dimensional schematic view of the lever mechanism of the utility model embodiment.

[0030] Figure 16 is a three-dimensional schematic view of the shell of the utility model embodiment. DETAILED DESCRIPTION

[0031] As Figures 1-16The embodiment of the utility model provides a kind of double objective three pressure head visual brinell hardness tester, including shell 1, the front surface of shell 1 is equipped with face frame 2, display 21 is embedded in face frame 2, the inner top of shell 1 is equipped with turntable cover 3, rotatable five function position turret mechanism 4 is equipped in turntable cover 3, one side of five function position turret mechanism 4 is equipped with camera mechanism 5, the lens end of camera mechanism 5 extends to face frame 2 by the through slot between face frame 2 and turntable cover 3, main shaft mechanism 6 is equipped in shell 1, one end of five function position turret mechanism 4 is connected with main shaft mechanism 6, one side of main shaft mechanism 6 is equipped with lever mechanism 7, the inner bottom of shell 1 is equipped with platform lifting mechanism 8, platform lifting mechanism 8 is located in the vertical opposite side of five function position turret mechanism 4, main machine bottom plate 9 is also installed on the inner bottom of shell 1, main machine 91 is installed on main machine bottom plate 9, upper cover plate 11 and rear cover plate 12 and side cover plate 13 are also covered on shell 1, three-prong switch 131 and six data interfaces 132 are respectively equipped on side cover plate 13, six data interfaces 132 are four USB interfaces and one HDMI interface and one network interface respectively, the bottom end of shell 1 is also equipped with four bottom feet 14.

[0032] As Figures 2-3 As shown, platform lifting mechanism 8 includes screw assembly 81 installed in the inner bottom of shell 1, hand wheel 82 and lifting platform 83 connected with screw assembly 81, screw assembly 81 includes screw shaft sleeve 811 fixed in the inner bottom of shell 1, screw rod 812 threaded in screw shaft sleeve 811, screw nut 813 matched with screw rod 812, one side of screw shaft sleeve 811 is equipped with motor drive device 84 installed in shell 1, motor drive device 84 includes motor mounting plate 841, drive motor 842 fixed on motor mounting plate 841 and drive pulley 843 connected with output shaft of drive motor 842, hand wheel 82 is installed on screw rod 812 and located above screw rod shaft sleeve 811, and is connected with drive pulley 843 through transmission belt (not shown in the figure), screw rod cover 15 is provided above screw assembly 81 of shell 1, screw rod cover 15 covers screw rod 812, hand wheel 82 and drive pulley 843, screw rod opening is provided on screw rod cover 15 for screw rod 812 to move, and the top end of screw rod 812 is threadedly connected with lifting platform 83.

[0033] As Figure 4As shown, the five-function position turret mechanism 4 includes a support plate 41, a turret motor connecting mechanism 42 mounted on the upper surface of the support plate 41, and a five-function position turret assembly 43 arranged below the support plate 41, the five-function position turret assembly 43 including a turret 44, a central shaft assembly 45 arranged in the turret 44, a first objective lens 46 and a second objective lens 47 respectively connected around the turret 44, and a first detection pressure head assembly, a second detection pressure head assembly, and a third detection pressure head assembly, one end of the central shaft assembly 45 being connected with the support plate 41, and the other end extending out of the turntable cover 3 through a central opening 441 formed on the turret 44, the turret motor connecting mechanism 42 including a turret motor connecting plate 421 mounted on the upper surface of the support plate 41, and a motor bracket 422 mounted on the turret motor connecting plate 421, a turret motor 423 being mounted between the motor bracket 422 and the turret motor connecting plate 421, a motor shaft end of the turret motor 423 being connected with a small pulley 424, the small pulley 424 being connected with a driven pulley (not shown in the figure) on the turret 44 through a transmission belt (not shown in the figure) to form a transmission system, and the central shaft assembly 45 in the figure only shows the central shaft itself, but it can be understood that in actual application, the central shaft assembly 45 also includes necessary bearings, shaft sleeves, fixing members, etc. to ensure smooth rotation and accurate positioning of the central shaft.

[0034] As shown in Figure 5 The first detection pressure head assembly, the second detection pressure head assembly, and the third detection pressure head assembly are the same components, so only one detection pressure head assembly is described as an example, and the three detection pressure head assemblies all include a linear motion ball bearing 48 mounted on the turret 44, and a detection pressure head rod 481 arranged in the inner ring of the linear motion ball bearing 48, the top end of the detection pressure head rod 481 being fixed with a pressure head rod cap 482, and the end being inserted and clamped with a steel ball pressure head 483, two spring washers (not shown in the figure) being arranged between the linear motion ball bearing 48 and the pressure head rod cap 482, the two spring washers being tightly attached to the upper side of the linear motion ball bearing 48 and the lower side of the pressure head rod cap 482 respectively, a spring (not shown in the figure) being arranged between the spring washers, and the detection pressure head rod 481 being further sleeved with an adjusting ring 484 at the end of the steel ball pressure head 483, the observation ends of the first objective lens 46 and the second objective lens 47, and the steel ball pressure head ends of the three detection pressure head assemblies all extending out of the turntable cover 3.

[0035] As shown in Figure 6 The first objective lens 46 and the second objective lens 47 are both correspondingly provided with a mirror assembly 49 at one end of the support plate 41, the mirror assembly 49 including a mirror cover 491 and a mirror 492 arranged at the lower end of the mirror cover 491, and the mirror cover 491 being connected with the turret 44 through two first vertical columns 493.

[0036] As shown in Figures 7-8As shown, the camera mechanism 5 includes an eyepiece adjusting block 51 mounted on the opposite side of the upper surface of the support plate 41, an eyepiece adjusting piece 52 mounted on one side of the eyepiece adjusting block 51, an eyepiece block 53 mounted on one side of the eyepiece adjusting piece 52, a front fixed tube 54 inserted through the eyepiece block 53, a mirror holder 55 provided on one side of the front fixed tube 54, a rear fixed tube 56 provided on one end of the mirror holder 55, a CCD camera 57 provided on one end of the rear fixed tube 56, the end of the front fixed tube 54 extending into the mirror holder 55, the first mirror cover 551 covering the opening of the mirror holder 55, the first mirror 552 provided in the first mirror cover 551, one end of the rear fixed tube 56 extending into the mirror holder 55 and the other end connected to the CCD camera 57, the data socket 571 provided on one end of the CCD camera 57, the auxiliary mirror holder 442 mounted on the turret 44 corresponding to the position of the front fixed tube 54, and the third objective lens 443 mounted on the auxiliary mirror holder 442.

[0037] As shown in Figures 9-10 The housing 1 further includes a Hall mounting block 16 and a power supply mounting plate 17. The Hall mounting block 16 is located on one side of the lever assembly 7 and is mounted on the inner wall of the housing 1. One end of the Hall mounting block 16 is fixed with a Hall bracket 161, two arc grooves are formed in the Hall bracket 161, and a Hall switch 162 is arranged in each arc groove. The Hall switch 162 is clamped on the Hall bracket 161 by two nuts 163. The power supply mounting plate 17 is mounted on the inner wall of the housing 1 opposite to the Hall mounting block 16.

[0038] Figure 11 As shown, the side wall of the support plate 41 and the mounting surface 411 facing the turret 44 are both provided with a photoelectric fixing piece 40, and the photoelectric fixing piece 40 is provided with a photoelectric switch 401. The mounting surface 441 of the support plate 41 facing the turret 44 is further provided with a positioning bracket 50, and the positioning bracket 50 is provided with a positioning piece 501 and a steel ball positioning block 502. The steel ball positioning block 502 is provided with a hole, and a steel ball (not shown in the figure) is embedded in the hole. The turret 44 is provided with a positioning pin 444. Some of the photoelectric switches 401 are not shown in the photoelectric fixing piece 40.

[0039] Figures 12-13As shown, the spindle mechanism 6 is mainly composed of a shaft seat 61, a sensor 62, a spindle 63, a spindle bushing 65 and a spindle compression spring 66. The shaft seat 61 is installed with the sensor 62 at one end and fixed with the spindle 63 at the other end. The sensor 62 extends to the lower end through a reserved slot on the support plate 41 and is clamped with a pressure head support 64. The other end of the shaft seat 61 is installed with the spindle bushing 65 which is sleeved on the outer surface of the spindle 63 to reduce friction. Then, the spindle compression spring 66 is wound above the spindle bushing 65 to provide a pre-tightening force. The end of the spindle 63 away from the shaft seat 61 is provided with a groove in which a main tool pad 67 is arranged. The main tool pad 67 is padded with a round tool tip 671. The entire spindle mechanism 6 is encapsulated by a spindle seat 68 and a spindle cover 69 and is connected with the support plate 41 through the second stand column 60.

[0040] As Figures 14-15As shown, the lever mechanism 7 is arranged on one side of the spindle mechanism 6, mainly composed of bottom plate 71, stepper motor assembly 72, load wire rod assembly 73 and lever assembly 74 and other key components, the bottom plate 71 is firmly installed with motor mounting plate 721, and then fixes the stepper motor 722, the stepper motor 722 as a power source, the motor shaft end is ingeniously connected with pulley 723, which is used for transmitting power, the load wire rod assembly 73 is built in the bottom plate 71, and the core components include screw sleeve 731 and load wire rod 732, the outer wall of the screw sleeve 731 is sequentially sleeved with lower bearing, middle spacer ring and upper circular nut, these components together ensure the stability and accuracy of the structure, the lower end of the screw sleeve 731 is tightly clamped in the large pulley 733, and cooperates with the large pulley to realize the transmission and conversion of power, the top end of the load wire rod 732 bears the lever assembly 74, the lever assembly 74 includes connecting seat 741 and rear lever 742, the connecting seat 741 is provided with the rear lever 742, the ends of the rear lever 742 are clamped with bearings 744 through lever shafts 743, so that the stability and accuracy of the rear lever 742 in the movement process are ensured, the rear lever 742 is provided with magnet seat 77 on the side facing the hall switch 162, the magnet seat 77 is provided with magnet and cap 78, the connecting seat 741 and the load wire rod 732 are tightly connected through the connecting piece 75, forming a stable whole, ensuring the stability and reliability of the lever mechanism 74, in addition, the rear lever 742 is provided with an auxiliary lever assembly 76, the auxiliary lever assembly 76 includes knife pad frame 761, lever knife pad 762 and lever knife tip 763 and other components, the inner top end and the inner bottom end of the knife pad frame 761 are provided with lever knife pads and lever knife tips, the lever knife pad is provided with a lever knife tip, forming a stable support structure, the rear lever 742 is provided on the lever knife tip at the inner bottom end of the knife pad frame 761, at the same time, the lever knife tip at the inner top end of the knife pad frame 76 is also provided with an auxiliary lever 762, the end of the auxiliary lever 762 is provided with a spindle port, which exactly accommodates the top end of the spindle 63, realizes the accurate connection with the round knife tip 671 on the spindle 63, so as to ensure the efficient, stable and reliable operation of the lever mechanism 74.

[0041] The first objective lens 46 is a 1 times objective lens, the second objective lens 47 is a 2 times objective lens, the third objective lens 443 is a 0.8 times objective lens, and the steel ball indenter 483 in the first detection indenter assembly, the second detection indenter assembly and the third detection indenter assembly is respectively 2.5 mm in diameter, 5 mm in diameter and 10 mm in diameter.

[0042] Of course, in addition to the above-mentioned embodiments, the utility model can have other various embodiments, without departing from the content of the utility model technical scheme, those skilled in the art can make various corresponding changes and deformation according to the utility model, and these changes or deformation and the technical scheme in the patent are equivalent, then these corresponding changes and deformation should belong to the protection scope of the claims attached to the utility model.

Claims

1. A dual objective, three-indenter visual Brinell hardness tester characterized by: The utility model provides a kind of five-function position turret mechanism, which comprises a support plate, a turret motor connecting mechanism mounted on one side of the upper surface of the support plate, and a five-function position turret assembly arranged below the support plate.The five-function position turret assembly comprises a turret, a central shaft assembly arranged in the turret, a first objective lens and a second objective lens respectively connected around the turret, and a first detection pressure head assembly, a second detection pressure head assembly and a third detection pressure head assembly.The one end of the central shaft assembly is connected with the support plate, and the other end extends out of the turntable cover through a central opening formed in the turret.

2. The dual objective, three-indenter visual Brinell hardness tester of claim 1, wherein: The camera mechanism comprises an eyepiece adjusting block mounted on the opposite side of the upper surface of the support plate, an eyepiece adjusting piece mounted on one side of the eyepiece adjusting block, an eyepiece block mounted on one side of the eyepiece adjusting piece, a front fixed tube inserted in the eyepiece block, a mirror holder arranged on one side of the front fixed tube, a rear fixed tube arranged at one end of the mirror holder, and a CCD camera arranged at one end of the rear fixed tube.The end of the front fixed tube extends into the mirror holder, and the opening of the mirror holder is covered with a first mirror cover, which contains a first mirror.The one end of the rear fixed tube extends into the mirror holder, and the other end is connected in the CCD camera.The CCD camera also has a data socket at one end.The turret has an auxiliary mirror holder at a position corresponding to the front fixed tube, and the auxiliary mirror holder is provided with a third objective lens.

3. The dual objective, three-indenter visual Brinell hardness tester of claim 2, wherein: The first detection pressure head assembly, the second detection pressure head assembly and the third detection pressure head assembly each comprise a linear motion ball bearing mounted on the turret and a detection pressure head rod inserted in the inner ring of the linear motion ball bearing.The top end of the detection pressure head rod is fixed with a pressure head rod cap, and the end of the detection pressure head rod is inserted with a steel ball pressure head.The linear motion ball bearing and the pressure head rod cap are provided with spring washers, which are respectively tightly attached to the upper side of the linear motion ball bearing and the lower side of the pressure head rod cap.A spring is mounted between the spring washers.The detection pressure head rod is also sleeved with an adjusting ring at the end of the steel ball pressure head.The observation end of the first objective lens and the second objective lens, and the steel ball pressure head end of the first detection pressure head assembly and the second detection pressure head assembly all extend out of the turntable cover.

4. Double objective three-indenter visual Brinell hardness tester according to claim 2 or 3, characterized in that: ​ 5. The dual objective, three ram, visual Brinell hardness tester of claim 4, wherein: The platform lifting mechanism comprises a screw rod assembly installed on the inner bottom of the shell, a hand wheel, and a lifting platform connected with the screw rod assembly, the screw rod assembly comprises a screw rod sleeve fixed on the inner bottom of the shell, a screw rod arranged in the screw rod sleeve, and a screw nut matched with the screw rod, one side of the screw rod sleeve is provided with a motor driving device installed in the shell, the motor driving device comprises a motor mounting plate, a driving motor fixed on the motor mounting plate, and a driving pulley connected with the output shaft of the driving motor, the hand wheel is installed on the screw rod and located above the screw rod sleeve and connected with the driving pulley through a transmission belt, the shell is provided with a screw rod cover above the screw rod assembly, the screw rod cover covers the screw rod, the hand wheel and the driving pulley, a screw rod opening for the movement of the screw rod is formed in the screw rod cover, and the top end of the screw rod is threadedly connected with the lifting platform.

6. The dual objective, three ram, visual Brinell hardness tester of claim 2, wherein: The first objective lens and the second objective lens are correspondingly provided with mirror assemblies at one end of the support plate, the mirror assembly comprises a mirror cover and a second mirror arranged at the lower end of the mirror cover, and the mirror cover is connected with the turret through a first vertical column.

7. The dual objective, three ram, visual Brinell hardness tester of claim 2, wherein: The turret motor connecting mechanism comprises a turret motor connecting plate installed on one side of the upper surface of the support plate and a motor support installed on the turret motor connecting plate, a turret motor is installed between the motor support and the turret motor connecting plate, and the motor shaft end of the turret motor is connected with a small pulley.

8. The dual objective, three ram, visual Brinell hardness tester of claim 1, wherein: The shell further comprises a Hall mounting block and a power supply mounting plate, the Hall mounting block is located on one side of the lever assembly and is installed on the inner wall of the shell, one end of the Hall mounting block is fixed with a Hall support, an arc groove is formed in the Hall support, a Hall switch is arranged in the arc groove, the Hall switch is clamped on the Hall support through a nut, and the power supply mounting plate is installed on the inner wall of the shell opposite to the Hall mounting block.

9. The dual objective, three ram, visual Brinell hardness tester of claim 2, wherein: The support plate is provided with an optoelectronic fixing piece on the side wall and the mounting surface facing the turret, an optoelectronic switch is installed on the optoelectronic fixing piece, the mounting surface of the support plate facing the turret is further provided with a positioning support, a positioning piece is installed on the positioning support, a steel ball positioning block is installed on the positioning piece, the steel ball positioning block is provided with a hole, a steel ball is embedded in the hole, and a positioning needle is installed on the turret.

10. The dual objective, three-proofer Brinell hardness tester of claim 1, wherein: The shell is further provided with an upper cover plate, a rear cover plate and a side cover plate, the side cover plate is respectively provided with a triangular switch and at least one data interface, and the bottom end of the shell is further provided with a bottom foot.

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