CN217156163U - Modular Rockwell hardness measuring head - Google Patents

Abstract

A modular Rockwell hardness measuring head belongs to the technical field of hardness detection, and overcomes the problems that the Rockwell hardness measuring equipment in the prior art has complex structure, large volume and high cost and can not be used as a modular functional component to be arranged on non-standard equipment to automatically detect the hardness of a workpiece on line, and is characterized by comprising a general outer cover of the modular Rockwell hardness measuring head, a lifting loading mechanism, a central guide mechanism and a pressure head pressing cover integrated mechanism, wherein a laser distance measuring sensor is arranged in the measuring head, and diversified interfaces connected with external equipment are arranged, so that the modular Rockwell hardness measuring head has the advantages that the modular Rockwell hardness measuring head can be used as a modular functional component to be arranged on the non-standard equipment to automatically detect the hardness of the workpiece on line, not only can be independently arranged on the equipment without the external lifting mechanism to detect a series of workpieces with small thickness difference, but also can be arranged on the equipment with the external lifting mechanism to detect a series of workpieces with large thickness range change, simple and compact structure and wide application range.

Description

Modular Rockwell hardness measuring head

Technical Field

The utility model belongs to the technical field of the hardness detects, in particular to modularization rockwell hardness measuring head.

Background

With the development of intelligent control technology, automatic detection technology and multi-sensor system information fusion technology, automatic online hardness detection becomes the mainstream of the times. The majority of Rockwell measuring equipment in the prior art is Rockwell measuring desktop machines, manual work is needed to participate in the measurement, the labor intensity is high, automatic online detection cannot be realized, the desktop machines have limitations on the size of a measured workpiece, the workpiece with large size cannot be measured, and the loading and unloading of large-scale detected workpieces are inconvenient.

The utility model with the application number of CN201120303713.7 discloses a "full-automatic Rockwell hardness tester". The utility model discloses an including frame, power transmission system, indentation measurement structure and control system, power transmission system includes servo motor, reduction gear, band pulley and the ball fixed mutually with the band pulley, and the reduction gear is connected through the hold-in range with the band pulley, be fixed with the tube-shape main shaft on ball's the screw, the end fixing of this tube-shape main shaft has the pressure head seat that is used for fixed pressure head, pressure head seat is connected with the tube-shape main shaft through pressure sensor. The utility model discloses a realized that the pressure head carries out linear motion along with ball's rotation to produce the indentation on the examination work piece that awaits measuring, realized the accurate measurement to pressure head seat removal displacement. The utility model discloses a desk-top sclerometer equipment exists as before the problem that desk-top sclerometer equipment exists. The utility model discloses a still because main shaft and screw fixed connection, ball pass through belt pulley transmission, and the main shaft passes through the screw and moves on the lead screw, and the reduction gear is connected through the hold-in range with the band pulley, so, whole size is bigger than normal, can't realize compact structure design and on-line measuring function.

In addition, among the prior art, a table-type Rockwell hardness tester can only be installed at a fixed position, a workpiece to be tested is placed on a measuring table for detection, and the hardness of the workpiece cannot be automatically detected on line under the control of an upper computer on non-standard equipment as a modularized functional component due to the limitation of a use range.

The invention with the application number of CN200610070582.6 discloses an automatic loading and unloading and measuring unit of a hardness tester. The invention comprises a supporting framework, a stepping driving mechanism, a main shaft loading and unloading mechanism, a main shaft mechanism, a clamping mechanism, an indentation depth measuring mechanism and an electric control system. The displacement sensor used in the invention is a contact type displacement sensor, the service life is short, the installation mode of the displacement sensor is an articulated lever type, the requirement on the processing precision of related parts is higher for ensuring the measurement precision, and the installation position of the contact type displacement sensor is not concentric with the main shaft, so that the requirement on the installation precision is higher. In addition, the clamping mechanism used by the invention comprises a clamping spring, a clamping guide cylinder, a clamping hanging cylinder and a protective sleeve, wherein the clamping hanging cylinder is hung on the upper end surface of a transmission end cover in the main shaft loading and unloading mechanism. The clamping mechanism is characterized in that the clamping hanging cylinder is hung on a main shaft loading mechanism, the clamping hanging cylinder is connected with a measuring head body through a compression spring, and the compression spring has the effect that when a main shaft pressure head moves downwards and does not contact the surface of a measuring workpiece, the compression spring applies pressure to the clamping hanging cylinder to enable the clamping hanging cylinder and the main shaft pressure head to move synchronously; when the clamping hanging cylinder is contacted with the surface of a measured workpiece, the clamping hanging cylinder does not move to clamp the workpiece, and the main shaft pressure head can be independently moved to measure. In the structure of the invention, in the clamping process, the clamping force is dynamically changed along with the total stroke, the larger the downward stroke is, the smaller the clamping force is, in order to clamp a measured workpiece, the rigidity of a compression spring needs to be improved, and when a main shaft pressure head moves upwards, the compression spring is continuously compressed, the pressure of the compression spring is continuously increased, so that a large-torque motor needs to be selected for driving, the size of the motor is increased by using the large-torque motor, and the main shaft loading driving motor needs to be transited through a first-stage parallel gear transmission mechanism. In conclusion, the invention has the advantages of complex overall structure, large volume and high cost.

The invention discloses a sand mold hardness tester capable of automatically detecting on line in an invention with the application number of CN202011206368.5, wherein a displacement sensor is arranged in a lower shell, a pressure foot is a telescopic pressure foot, a pressure head is arranged in the telescopic pressure foot, the left end of the pressure head is fixedly connected with a movable iron core of the displacement sensor, a pressure foot return spring is arranged at the left end of the telescopic pressure foot, and a first photoelectric switch and a second photoelectric switch are respectively arranged on the upper surface of the lower shell. However, the present invention does not have an automatic loading device, and requires a micro-displacement compression spring of a robot to load a test force, and the present invention does not have a function of detecting a surface position of a workpiece, and can detect only a workpiece having a fixed size at a predetermined position.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the weak point that prior art exists is overcome to the problem that will solve, provides and can install on nonstandard equipment as a modular functional unit, carries out online automated inspection to work piece hardness under the control of host computer, and a modularization rockwell hardness measuring head that afterburning precision is high, measuring speed is fast, simple structure is compact.

The utility model adopts the technical scheme that the lifting loading mechanism comprises a general outer cover of a modularized Rockwell measuring head, a lifting loading mechanism, a central guide mechanism and a pressure head pressing cover integrated mechanism, wherein the lifting loading mechanism comprises a reversed V-shaped support arranged on the upper surface of a mounting frame, a speed reducing motor arranged on the upper surface of the reversed V-shaped support, an angular contact ball bearing arranged in the mounting frame, a transition sleeve arranged in the inner ring of the angular contact ball bearing, a bearing clamping plate which plays a fixing role for the transition sleeve and the angular contact ball bearing, and a screw arranged in the transition sleeve, wherein the screw and the transition sleeve are fixedly connected with a shaft coupling; the ball screw matched with the screw is arranged in the screw, the central guide mechanism comprises a central main shaft fixedly arranged at the lower end of the ball screw, a first guide shaft sleeve is sleeved at the upper end of the central main shaft, key grooves are matched and processed on the first guide shaft sleeve and the central main shaft, a sliding guide key which plays a role in guiding the central main shaft is arranged in the key groove which is matched and processed, the pressure head and pressure cover integrated mechanism comprises a sensor connecting flange fixedly connected with the lower end surface of a flange plate of the central main shaft, guide shafts are symmetrically arranged on the flange plate of the central main shaft, a force sensor is arranged below the sensor connecting flange, a small main shaft is arranged at the lower end of the force sensor, a pressure head is fixedly connected with the small main shaft, a compression spring is sleeved on the guide shafts which are symmetrically arranged, and a coil fixing body is inserted into a rectangular opening communicated with the left side and the right side of the lower end of the sensor connecting flange, meanwhile, a coil fixing body is sleeved at the lower end of a compression spring on a guide shaft, second guide shaft sleeves are symmetrically arranged in the coil fixing body, a pressing cover connecting body is arranged below the coil fixing body, a pressing cover is arranged in the pressing cover connecting body, a displacement sensor iron core is arranged at the lower end of a ball screw, a coil copper sleeve is arranged in a central hole of the coil fixing body, and a displacement sensor coil is arranged in the coil copper sleeve.

The modularized Rockwell measuring head general outer cover comprises a front arc cover and a rear U-shaped cover, the front arc cover and the rear U-shaped cover are positioned through a seam allowance and are fixedly connected through screws, the tops of the front arc cover and the rear U-shaped cover are provided with outward protruding outer edges, the front arc cover and the rear U-shaped cover are fixedly connected with an upper mounting flange through the top outer edges, the bottom of the front arc cover is provided with a first semicircular through hole, the bottom of the rear U-shaped cover is provided with a second semicircular through hole, the first semicircular through hole of the front arc cover and the second semicircular through hole of the rear U-shaped cover form a circular through hole through which a pressing cover can pass, a first rectangular opening is arranged behind the rear U-shaped cover, the right upper part of the rear U-shaped cover is provided with a second rectangular opening, an interface mounting plate is arranged in the second rectangular opening in an embedded manner, a power supply interface and a communication interface are arranged on the interface mounting plate, and a third opening through which a laser ranging sensor light path can pass is arranged at the bottom of the rear U-shaped cover, a group of status indicator lamps are arranged in front of the front arc cover.

Install the mounting bracket in the totality dustcoat, the front end of mounting bracket is the stairstepping cylinder, and the inner chamber is corresponding for the stairstepping inner chamber, is equipped with first inner chamber, second inner chamber, third inner chamber and fourth inner chamber from top to bottom in proper order, and the diameter of first inner chamber, second inner chamber and third inner chamber is steadilyd decrease, and the diameter of fourth inner chamber is greater than the third inner chamber, is equipped with the side mounting flange interface of rectangle at the rear end of mounting bracket.

First spacing support and the spacing support of second are installed to the bottom left and right sides symmetry of mounting bracket, install first photoelectric switch support and second photoelectric switch support in the bottom rear side of mounting bracket, install first photoelectric switch on first photoelectric switch support, install second photoelectric switch on second photoelectric switch support sensor flange's back has first switch response piece and second switch response piece with screw connection respectively install the locating piece on the pressure cover connector, install the sensor installing support on the locating piece, be connected with laser distance measuring sensor through sensor installation backplate on the sensor installing support go up and install the circuit board mounting bracket on the lower flange dish of mounting flange, install the circuit board on the circuit board mounting bracket.

Compared with the prior art, the utility model discloses a modular design provides one kind and can install the modularization rockwell measuring head that carries out online automated inspection on non-standard equipment as a modular functional unit, has compact structure, degree of automation is high, afterburning precision is high, measuring speed is fast characteristics, can wide application in non-standard hardness detection production line system, reduces the human cost, improves production efficiency, specifically says, the utility model has the following beneficial effects:

(1) the utility model discloses direct front arc cover and back U type cover constitute a components of a whole that can function independently closed module ization rockwell measuring head's totality dustcoat, front arc cover is equipped with the tang of mutually supporting with back U type cover, the installation accuracy has been guaranteed, moreover, the steam generator is simple in structure and light and handy, easy to assemble and dismantlement, and be equipped with diversified mounting flange interface of being connected with external equipment and with external equipment communication interface, can realize top installation or side direction installation with being connected of external equipment, the connection problem of the relevant part of production line system is detected with host computer and nonstandard hardness has been solved, realize carrying out online automated inspection to work piece hardness under the control of host computer, but the wide application detects in the production line system to nonstandard hardness, reduce the human cost, and improve production efficiency.

(2) The utility model discloses a front end outward appearance is the stairstepping cylinder, and its inner chamber is the corresponding mounting bracket of stairstepping inner chamber, installs motor mounting flange and installs gear motor through above this mounting bracket, installs angular contact ball bearing in its first inner chamber, installs the transition cover in angular contact ball bearing's inner circle, installs the screw in the transition cover, installs the ball screw with screw complex in the screw, constitutes the utility model discloses a lift loading mechanism, the lift loading mechanism adopts gear motor drive screw fixed rotation promptly, drives the structure that ball screw reciprocated; the lower end of a ball screw in a third inner cavity of the mounting frame is in threaded connection with a central main shaft, the upper end of the central main shaft is sleeved with a first guide shaft sleeve fixed on the mounting frame, a sliding guide key for guiding the central main shaft is arranged in a key groove matched with the sliding guide key processed on the first guide shaft sleeve and the central main shaft in a matching manner, so that the rotary motion of the ball screw is converted into linear motion, and the rear end of the mounting frame is also provided with a rectangular side mounting flange interface, so that the compact structural design is realized;

(3) the utility model discloses have automatic loading device, have and press cover integral type mechanism through lift loading mechanism, central guiding mechanism and pressure head to work piece surface position detection function, can use the inductance type displacement sensor of 1 mm's small range to carry out the position detection, improved the position measurement precision, solved the pressure head and pressed the cover components of a whole that can function independently design and need choose a large amount of journey displacement sensor for use and lead to the problem that the structure volume is bigger than normal.

(4) The pressure head and cover integrated mechanism of the utility model can realize that when the idle stroke pressure cover is not contacted with the detection surface of the workpiece, the pressure head and the pressure cover move synchronously, when the pressure cover contacts with the detection surface of the workpiece firstly, the pressure head can move independently through the compression spring, at the moment, the displacement sensor generates a displacement value, the loading and the position detection are realized by matching with the control of the motor, and because of adopting the pressure head and cover pressing integrated mechanism, the utility model can be independently arranged on equipment without an external lifting mechanism to carry out a series of workpiece detection with small thickness difference, because the utility model is provided with the laser ranging sensor and can also be arranged on equipment with an external lifting mechanism to detect a series of workpieces with larger variation of the thickness range of the workpieces, the pressure head and the pressure cover are designed in a split mode, and the pressure head and the pressure cover are matched with equipment with an external lifting mechanism to finish workpiece detection, so that the pressure head and the pressure cover are more flexible and reliable, and the cost is reduced.

Drawings

Figure 1 is a front view of the present invention,

figure 2 is a right side view of figure 1,

figure 3 is a cross-sectional view a-a of figure 2,

figure 4 is a rear view of the hidden back cover of the present invention,

fig. 5 is a bottom view of fig. 1.

In the figure:

1. a front arc-shaped cover 1-1, a first semicircular through hole,

2. a rear U-shaped cover is arranged on the rear part,

2-1, a second semicircular through hole, 2-2, a first rectangular opening,

2-3, a second rectangular opening, 2-4, a third rectangular opening,

3. an upper mounting flange is arranged on the upper side of the frame,

3-1, an upper flange plate, 3-2, a middle sleeve, 3-3, a lower flange plate,

4. a power interface is arranged on the base plate,

5. a communication interface, 6, a status indicator light,

7. an interface mounting plate, 8, a mounting frame,

8-1. side mounting flange interface,

9. the shape of the bracket is like a Chinese character 'ji',

10-1, 10-2, a second connection screw,

10-3, a third connecting screw, 10-4, a fourth connecting screw,

11. a speed reducing motor 12, an angular contact ball bearing,

13. a transition sleeve, 14, a screw nut,

15. a ball screw, 16, a coupling,

17. a bearing chuck plate, 18, a central main shaft,

19. a first guide bush, 20, a sliding guide key,

21. a locking nut, 22, a sensor connecting flange,

23. a guide shaft, 24, a force sensor,

25. a small main shaft, 26, a pressure head,

27. a coil fixing body, 28. a cover pressing connecting body,

29. a second guide shaft sleeve, 30, a press cover,

31. the damping element is arranged on the outer surface of the housing,

32-1. displacement sensor iron core, 32-2. displacement sensor coil,

33. a circuit board is provided with a plurality of circuit boards,

34. the copper sleeve of the coil is sleeved with a copper sleeve,

35. the spring is compressed, and the spring is compressed,

36-1, a first limit bracket, 36-2, a second limit bracket,

37-1, a first photoelectric switch bracket, 37-2, a second photoelectric switch bracket,

38-1, a first photoelectric switch, 38-2, a second photoelectric switch,

39. a positioning block 40, a sensor mounting bracket,

41. a laser ranging sensor, 42, a sensor mounting back plate,

43. a circuit board mounting frame is arranged on the base plate,

44-1, a first switch induction sheet, and 44-2, a second switch induction sheet.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 5, the technical scheme adopted by the utility model comprises a general outer cover of a modularized rockwell measuring head, a lifting loading mechanism, a central guide mechanism and a pressure head and cover pressing integrated mechanism;

the general outer cover of the modularized Rockwell measuring head comprises a front arc cover 1 and a rear U-shaped cover 2, the front arc cover 1 and the rear U-shaped cover 2 are positioned through a seam allowance and are fixedly connected through screws, the tops of the front arc cover 1 and the rear U-shaped cover 2 are provided with outwards protruding outer edges, the front arc cover 1 and the rear U-shaped cover 2 are fixedly connected with an upper mounting flange 3 through the outer edges of the tops, the bottom of the front arc cover 1 is provided with a first semicircular through hole 1-1, the bottom of the rear U-shaped cover 2 is provided with a second semicircular through hole 2-1, the first semicircular through hole 1-1 of the front arc cover 1 and the second semicircular through hole 2-1 of the rear U-shaped cover 2 form a circular through hole through which a pressing cover can pass, the rear of the rear U-shaped cover 2 is provided with a first rectangular opening 2-2, the upper part of the right side of the rear U-shaped cover 2 is provided with a second rectangular opening 2-3, an interface mounting plate 7 is embedded in the second rectangular opening 2-3, a power supply interface 4 and a communication interface 5 are mounted on the interface mounting plate 7, a third rectangular opening 2-4 which can enable a light path of the laser ranging sensor to pass through is arranged at the bottom of the rear U-shaped cover 2, and a group of status indicator lamps 6 are mounted in front of the front arc-shaped cover 1; the upper mounting flange 3 is formed by welding an upper flange plate 3-1, a middle sleeve 3-2 and a lower flange plate 3-3, and the front arc-shaped cover 1 and the rear U-shaped cover 2 are fixedly connected with the upper flange plate 3-1 of the upper mounting flange 3 through the outer edge of which the top is protruded outwards;

the lifting loading mechanism comprises a mounting frame 8 mounted in the overall outer cover of the modular Rockwell measuring head, the mounting frame 8 is fixedly connected with a lower flange plate 3-3 of an upper mounting flange 3 through a fourth connecting screw 10-4, the front end of the mounting frame 8 is a stepped cylinder, the inner cavity of the mounting frame is correspondingly a stepped inner cavity, a first inner cavity, a second inner cavity, a third inner cavity and a fourth inner cavity are sequentially arranged from top to bottom, the diameters of the first inner cavity, the second inner cavity and the third inner cavity are gradually reduced, the diameter of the fourth inner cavity is larger than that of the third inner cavity, a rectangular side mounting flange interface 8-1 is arranged at the rear end of the mounting frame 8, a first rectangular opening 2-2 is arranged behind a U-shaped cover 2 after the mounting frame 8 is mounted, and a bracket 9 shaped like a Chinese character 'ji' is mounted on the upper surface of the mounting frame 8, the bottom of the inverted-V-shaped support 9 is connected with a mounting frame 8 through a first connecting screw 10-1, a speed reducing motor 11 is installed on the upper surface of the inverted-V-shaped support 9, the top of the inverted-V-shaped support 9 is connected with the speed reducing motor 11 through a second connecting screw 10-2, an angular contact ball bearing 12 is installed in a first inner cavity of the mounting frame 8, a transition sleeve 13 is installed in an inner ring of the angular contact ball bearing 12, a bearing clamping plate 17 which has a fixing effect on the transition sleeve 13 and the angular contact ball bearing 12 is installed at the bottoms of the transition sleeve 13 and the angular contact ball bearing 12 in a second inner cavity of the mounting frame 8, a nut 14 is installed in the transition sleeve 13, and the nut 14 and the transition sleeve 13 are fixedly connected with a coupler 16 through a third connecting screw 10-3; a ball screw 15 matched with the screw 14 is arranged in the screw 14, the coupling 16 is connected with an output shaft of the speed reducing motor 11 and is locked and fixed by a jackscrew, and when the screw is in work, the speed reducing motor 11 drives the screw 14 to fixedly rotate to drive the ball screw 15 to move up and down;

the central guide mechanism comprises a central spindle 18 arranged at the lower end of a ball screw 15 in a third inner cavity of the mounting frame 8, the central spindle 18 is locked and fixed at the shaft end of the ball screw 15 through a locking nut 21, a first guide shaft sleeve 19 is sleeved at the upper end of the central spindle 18, an outer edge is arranged at the lower end of the first guide shaft sleeve 19, the outer edge is arranged in a fourth inner cavity of the mounting frame 8 and is fixedly connected with the mounting frame 8 through a screw, key grooves are formed in the first guide shaft sleeve 19 and the central spindle 18 in a matched mode, a sliding guide key 20 for guiding the central spindle 18 is arranged in the key grooves formed in the matched mode, the sliding guide key 20 is fixed on the central spindle 18 through the screw, and the central spindle 18 enables the rotary motion of the ball screw 15 to be converted into linear motion through the sliding of the sliding guide key 20 in the first guide shaft sleeve 19;

the pressure head and pressure cover integrated mechanism comprises a flange plate which is arranged at the lower end of a central main shaft 18 and integrated with the central main shaft 18, a sensor connecting flange 22 is fixedly connected to the lower end face of the flange plate of the central main shaft 18 through screws, guide shafts 23 are symmetrically arranged on the flange plate of the central main shaft 18, the guide shafts 23 are in threaded connection with the flange plate of the central main shaft 18, a force sensor 24 is arranged below the sensor connecting flange 22, a small main shaft 25 is arranged below the force sensor 24, and a pressure head 26 is fixedly connected to the small main shaft 25 through a jackscrew; a compression spring 35 is sleeved on a guide shaft 23 which is symmetrically installed, the left side and the right side of a sleeve at the lower end of a sensor connecting flange 22 are provided with communicated rectangular openings, a coil fixing body 27 is inserted into the rectangular openings which are communicated with the left side and the right side of the lower end of the sensor connecting flange 22, meanwhile, the coil fixing body 27 is sleeved at the lower end of the compression spring 35 on the guide shaft 23, a second guide shaft sleeve 29 is symmetrically installed in the coil fixing body 27, a press cover connecting body 28 is installed below the coil fixing body 27, the guide shaft 23 can slide in the second guide shaft sleeve 29, a displacement sensor iron core 32-1 is installed at the lower end of the ball screw 15, a coil copper sleeve 34 is installed in a central hole of the coil fixing body 27 and fixed through a jackscrew, a displacement sensor coil 32-2 is installed in the coil copper sleeve 34, and the displacement sensor iron core 32-1 can move in the displacement sensor coil 32-2, the displacement sensor of the utility model is composed of a displacement sensor iron core 32-1 and a displacement sensor coil 32-2, a pressure cover 30 is arranged in a pressure cover connector 28, the pressure cover 30 is fixed with the pressure cover connector 28 through a damping element 31, the upper end of a compression spring 35 is contacted with the lower surface of a flange of a central main shaft 18, the lower end is contacted with the upper surface of a coil fixing body 27, when in use, when the lower part of the central main shaft 18 is in idle stroke, a pressure head 26 and the pressure cover 30 can move synchronously, when the pressure cover 30 is contacted with the surface of a workpiece to start measurement, the compression spring 35 is compressed to enable the pressure head 26 and the pressure cover 30 to move relatively, and the measurement value can be read by acquiring the change of the relative position of the displacement sensor iron core 32-1 in the displacement sensor coil 32-2;

a first limiting bracket 36-1 and a second limiting bracket 36-2 which limit the ball screw 15 are symmetrically arranged at the left side and the right side of the bottom of the mounting rack 8, the ball screw 15, the central spindle 18 and the pressure head pressing cover integrated mechanism can be protected, a first photoelectric switch bracket 37-1 and a second photoelectric switch bracket 37-2 are arranged at the rear side of the bottom of the mounting rack 8, a first photoelectric switch 38-1 which limits the lifting loading mechanism at the upper part is arranged on the first photoelectric switch bracket 37-1, a second photoelectric switch 38-2 which limits the lifting loading mechanism at the lower part is arranged on the second photoelectric switch bracket 37-2, a first switch induction sheet 44-1 and a second switch induction sheet 44-2 are respectively connected with the rear of the sensor connecting flange 22 by screws, a positioning block 39 is mounted on the pressure cover connecting body 28, a sensor mounting bracket 40 is mounted on the positioning block 39, a laser ranging sensor 41 is connected to the sensor mounting bracket 40 through a sensor mounting back plate 42, a circuit board mounting bracket 43 is mounted on the lower flange 3-3 of the upper mounting flange 3, and a circuit board 33 is mounted on the circuit board mounting bracket 43.

During the use, the utility model discloses an upper flange dish 3-1 or side mounting flange interface 8-1 of going up mounting flange 3 is connected with external equipment, and external equipment places according to predetermineeing the orbit the utility model discloses, simultaneously the utility model discloses a laser rangefinder sensor 41 feedback work piece distance, after getting into laser rangefinder sensor 41's response distance, gear motor 11 gets into the speed reduction set state, makes the utility model discloses stop at the assigned position apart from work surface 1 ~ 2mm, send hardness measurement instruction through control system, the utility model discloses a control gear motor 11 full speed downtake center main shaft 18, when pressing cover 30 contact work surface, displacement sensor begins to produce displacement data, and gear motor 11 deceleration simultaneously gets into the test measurement process.

Claims (4)

1. A modularization Rockwell hardness measuring head comprises a general outer cover of the modularization Rockwell measuring head, a lifting loading mechanism, a central guide mechanism and a pressure head pressing cover integrated mechanism, and is characterized in that the lifting loading mechanism comprises a bracket (9) shaped like a Chinese character 'ji' mounted on the upper surface of a mounting rack (8), a speed reducing motor (11) mounted on the upper surface of the bracket (9) shaped like a Chinese character 'ji', an angular contact ball bearing (12) mounted in the mounting rack (8), a transition sleeve (13) mounted in the inner ring of the angular contact ball bearing (12), a bearing clamping plate (17) which has a fixing effect on the transition sleeve (13) and the angular contact ball bearing (12), a nut (14) mounted in the transition sleeve (13), and the nut (14) and the transition sleeve (13) are fixedly connected with a coupler (16); the pressure head and pressure cover integrated mechanism comprises a sensor connecting flange (22) fixedly connected to the lower end face of a flange of the central main shaft (18), guide shafts (23) symmetrically arranged on the flange of the central main shaft (18), a force sensor (24) arranged below the sensor connecting flange (22), and a small main shaft (25) arranged at the lower end of the force sensor (24), a pressure head (26) is fixedly connected on the small main shaft (25), compression springs (35) are sleeved on the guide shafts (23) which are symmetrically arranged, a coil fixing body (27) is inserted into a rectangular opening communicated with the left side and the right side of the lower end of the sensor connecting flange (22), meanwhile, the coil fixing body (27) is sleeved on the lower end of a compression spring (35) on the guide shaft (23), second guide shaft sleeves (29) are symmetrically arranged in the coil fixing body (27), a pressing cover connecting body (28) is arranged under the coil fixing body (27), a pressing cover (30) is arranged in the pressing cover connecting body (28), a displacement sensor iron core (32-1) is arranged at the lower end of the ball screw (15), a coil copper sleeve (34) is installed in a central hole of the coil fixing body (27), and a displacement sensor coil (32-2) is installed in the coil copper sleeve (34).

2. A modular Rockwell hardness measuring head according to claim 1, wherein the general outer cover of the modular Rockwell hardness measuring head comprises a front arc cover (1) and a rear U cover (2), the front arc cover (1) and the rear U cover (2) are positioned by a seam allowance and are fixedly connected by screws, the top of the front arc cover (1) and the rear U cover (2) are provided with an outward protruding outer edge, the front arc cover (1) and the rear U cover (2) are fixedly connected with an upper mounting flange (3) by the top outer edge, the bottom of the front arc cover (1) is provided with a first semicircular through hole (1-1), the bottom of the rear U cover (2) is provided with a second semicircular through hole (2-1), the first semicircular through hole (1-1) of the front arc cover (1) and the second semicircular through hole (2-1) of the rear U cover (2) form a circular through hole for the pressing cover to pass through, be equipped with first rectangle opening (2-2) behind U type cover (2) in back, be equipped with second rectangle opening (2-3) on the right side upper portion of back U type cover (2), embedded interface mounting panel (7) of installing in second rectangle opening (2-3), install power source (4) and communication interface (5) on interface mounting panel (7), the bottom of back U type cover (2) is equipped with third rectangle opening (2-4) that enable laser rangefinder sensor light path to pass through, preceding front mounting of preceding arc cover (1) has a set of status indicator lamp (6).

3. The modular rockwell hardness measuring head according to claim 1, wherein the mounting frame (8) is arranged in the general housing, the front end of the mounting frame (8) is a stepped cylinder, the inner cavity of the mounting frame is correspondingly a stepped inner cavity, a first inner cavity, a second inner cavity, a third inner cavity and a fourth inner cavity are sequentially arranged from top to bottom, the diameters of the first inner cavity, the second inner cavity and the third inner cavity are decreased progressively, the diameter of the fourth inner cavity is larger than that of the third inner cavity, and a rectangular side mounting flange interface (8-1) is arranged at the rear end of the mounting frame (8).

4. The modular rockwell hardness measuring head according to claim 2, wherein a first limit bracket (36-1) and a second limit bracket (36-2) are symmetrically installed at the left and right sides of the bottom of the mounting frame (8), a first photoelectric switch bracket (37-1) and a second photoelectric switch bracket (37-2) are installed at the rear side of the bottom of the mounting frame (8), a first photoelectric switch (38-1) is installed on the first photoelectric switch bracket (37-1), a second photoelectric switch (38-2) is installed on the second photoelectric switch bracket (37-2), a first switch sensing piece (44-1) and a second switch sensing piece (44-2) are respectively connected with screws at the rear of the sensor connecting flange (22), a positioning block (39) is installed on the pressure cover connecting body (28), install sensor installing support (40) on locating piece (39), be connected with laser ranging sensor (41) through sensor installation backplate (42) on sensor installing support (40) install circuit board mounting bracket (43) on going up lower flange dish (3-3) of mounting flange (3), install circuit board (33) on circuit board mounting bracket (43).

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