CN216978590U

CN216978590U - Hardness detector

Info

Publication number: CN216978590U
Application number: CN202220414122.5U
Authority: CN
Inventors: 沈安明
Original assignee: Hangzhou Singo Technology Co ltd
Current assignee: Hangzhou Singo Technology Co ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-07-15
Anticipated expiration: 2032-02-28

Abstract

The utility model relates to the technical field of hardness detection, in particular to a hardness detector. It includes a first beam, a first drive part is arranged on the first beam, a pressure plate is arranged at the output end of the first drive part, a second beam is arranged on one side of the first beam, and the second beam is one The side is provided with a first sensing unit for detecting displacement, the second beam is provided with a second driving part, the output end of the second driving part is provided with a pressure head, and the output end of the second driving part is connected to the A second sensing unit for detecting pressure is arranged between the pressure heads; the pressure head is matched with the pressure plate. Aiming at the technical problems of low degree of automation and poor precision of hardness detection, the utility model further improves the detection precision on the basis of realizing the automatic design of its own structure.

Description

Hardness detector

Technical Field

The utility model relates to the technical field of hardness detection, in particular to a hardness detector.

Background

At present, the mainstream hardness detection instrument is generally of a pure mechanical structure, and during actual use, the hardness detection instrument of the pure mechanical structure needs to be graded according to the condition of a product, so that the precision is obviously lower, and the requirement for higher precision cannot be met. Moreover, the hardness testing instrument with a pure mechanical structure generally needs manual operation, so that the hardness testing instrument is easily affected by misoperation of an operator and interference of environmental vibration, and further causes great deviation of a testing result. In addition, the hardness detecting instrument with the mechanical structure needs to manually copy the verification result, so that the calibration efficiency is low, the lattice alignment and reading of the mechanical pointer on the dial plate are artificially influenced, errors are difficult to avoid, and the stability of the hardness detecting instrument with the mechanical structure is poor.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved by the utility model

Aiming at the technical problems of low automation degree and poor precision of hardness detection, the utility model provides a hardness detector which further improves the detection precision on the basis of realizing the automatic design of the structure of the hardness detector.

Technical scheme

In order to solve the problems, the technical scheme provided by the utility model is as follows:

a hardness detector comprises a first cross beam, wherein a first driving part is arranged on the first cross beam, a pressure plate is arranged at the output end of the first driving part, a second cross beam is arranged on one side of the first cross beam, a first sensing unit for detecting displacement is arranged on one side of the second cross beam, a second driving part is arranged on the second cross beam, a pressure head is arranged at the output end of the second driving part, and a second sensing unit for detecting pressure is arranged between the output end of the second driving part and the pressure head; the pressure head is matched with the pressure plate.

Optionally, an upright is disposed between the first cross beam and the second cross beam, the guide cross beam is connected to the upright through a linear bearing, and the guide cross beam is connected to an output end of the first driving portion.

Optionally, be provided with first spacing response portion on the stand, be provided with the spacing response portion of second on the first crossbeam, first spacing response portion and the spacing response portion of second all with the guiding beam phase-match.

Optionally, the first driving portion includes a first stepping motor, the first stepping motor is connected to a first lead screw through a right-angle planetary reducer, and an output end of the first lead screw is connected to the pressing plate.

Optionally, the second driving portion comprises a second stepping motor, an output end of the second stepping motor is connected with a second lead screw through a meshed driving gear and a meshed transmission gear, and an output end of the second lead screw is connected with the pressure head.

Optionally, an output end of the second driving portion is connected with a limiting plate, a limiting switch is arranged on the second beam, and the limiting plate is matched with the limiting switch.

Optionally, a support column is arranged on the first cross beam, an adjusting cross beam is arranged on the support column, and the adjusting cross beam is fixedly connected with the first sensing unit.

Optionally, a laser displacement sensor is arranged on the second cross beam, and the laser displacement sensor is arranged in a matching manner with the pressing plate.

Optionally, the sensing device further comprises a data acquisition controller, and the data acquisition controller is connected with both the first sensing unit and the second sensing unit.

Optionally, the first sensing unit is a grating decimeter, and the second sensing unit is a load sensor.

Advantageous effects

Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:

aiming at the technical problems of low automation degree and poor precision of hardness detection, the utility model further improves the detection precision on the basis of realizing the automatic design of the structure of the utility model.

Drawings

Fig. 1 is a schematic structural diagram of a hardness tester according to an embodiment of the present invention.

Fig. 2 is a schematic partial structure diagram of a hardness tester according to an embodiment of the present invention.

Detailed Description

For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings. The terms first, second, and the like in the present invention are provided for convenience of describing the technical solution of the present invention, and have no specific limiting effect, but are all generic terms, and do not limit the technical solution of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form a new technical solution without contradiction or conflict, and the technical solutions are within the scope of the present invention.

Example 1

With reference to fig. 1-2, the present embodiment provides a hardness tester, including a first beam 101, a first driving portion is disposed on the first beam 101, a pressing plate 100 is disposed at an output end of the first driving portion, a second beam 102 is disposed on one side of the first beam 101, a first sensing unit 104 for detecting displacement is disposed on one side of the second beam 102, a second driving portion is disposed on the second beam 102, a pressing head 103 is disposed at an output end of the second driving portion, and a second sensing unit 105 for detecting pressure is disposed between the output end of the second driving portion and the pressing head 103; the pressing head 103 is matched with the pressing plate 100. The hardness detector of the embodiment is mainly used for detecting the hardness of various metal materials, can also be used in the hardness detection occasions of other non-metal materials, and is used for detecting whether products are qualified or not in industrial products.

The hardness detector of this embodiment, through utilizing the activity of first drive division drive clamp plate 100, make the sample of waiting to examine on the clamp plate 100 gradually be close to the pressure head 103 of test, it is timely when the distance separation and reunion between sample of waiting to examine and the pressure head 103, second drive division drive clamp 103 is to waiting to examine the sample and is exerted pressure, when pressure head 103 begins to exert pressure to the sample, the displacement variation of pressure head 103 is gathered simultaneously to first sensing unit 104, the power of exerting this moment is also gathered through second sensing unit 105 simultaneously, the hardness detector is according to the data that first sensing unit 104 and second sensing unit 105 gathered, can obtain the hardness testing result of sample of waiting to examine fast.

In the detection process of the hardness detector of this embodiment, the first sensing unit 104 is used to detect the displacement condition of the indenter 103 in real time, for example, the first sensing unit 104 may select a high-precision grating ten-thousandth chart with a resolution of 0.0001mm, and as will be appreciated, a grating ten-thousandth chart with higher precision may also be selected, and the higher the resolution is, the higher the sampling precision is, and the more accurate the result is. The second sensing unit 105 of this embodiment is configured to detect a pressure applied by the pressure head 103 to the test sample, so that a load sensor, for example, a 0.1-level high-precision load sensor, may be selected, and in the same way as the optical grating ten-thousandth meter, the sampling precision is higher, and the result is more accurate. It is conceivable that the first sensing unit 104 and the second sensing unit 105 in this embodiment can be replaced by the same or higher-level force sensor and displacement sensor to further improve the level accuracy of the instrument.

In the detection process of the hardness detector in the embodiment, the first driving part and the second driving part can realize automatic control through electric signals, and by combining real-time detection of the displacement of the pressure head 103 by the first sensing unit 104 and real-time detection of the pressure head 103 by the second sensing unit 105, manual intervention can be greatly reduced, errors are greatly reduced, and the efficiency and the accuracy of hardness detection are far higher than those of traditional mechanical hardness detection equipment.

The first driving part and the second driving part can be formed by combining a lead screw, a corresponding power device and a transmission mechanism, and the transmission relationship between the lead screw and the pressing plate 100 or the pressing head 103 can be set according to different precision and stroke requirements so as to meet the respective activity requirements of the pressing plate 100 or the pressing head 103. In addition, the first driving part and the second driving part can also be formed by combining power devices such as linear motors, air cylinders, hydraulic cylinders and the like which meet the precision requirement and corresponding transmission mechanisms, and the first driving part and the second driving part can be correspondingly arranged according to the actual activity requirement of the pressing plate 100 or the pressing head 103.

In addition, because the hardness detector of the embodiment, the first sensing unit 104 and the second sensing unit 105 can both adopt high-precision grating ten-thousandth-minute-meter load sensors, and can acquire and calculate displacement and pressure data in real time, the force applied by the pressure head 103 can be accurately controlled in the using process. Compare in the condition that traditional hardness testing equipment need carry out the stepping, traditional hardness testing equipment need be through the man-made force of will applying of judging in advance promptly, select required measuring range to select the grade of range through the handle, and the hardness detector of this embodiment just can realize whole journey not stepping, has greatly promoted convenience and practicality, has improved the efficiency that hardness detected.

Furthermore, because the hardness detector of this embodiment has realized not stepping in the whole journey, so the scope of detectable sample compares in traditional hardness check out test set and needs more extensive, and traditional hardness check out test set only has several kinds of ranges, can not satisfy the demand that bigger material detected.

In addition, the hardness tester of the embodiment is also very convenient to calibrate, can be directly calibrated through the first sensing unit 104 and the second sensing unit 105, and is different from the traditional hardness testing equipment, and in the traditional hardness testing equipment, especially, the error between the dial indicator and the balance weight is difficult to control, so that the traditional hardness testing equipment is difficult to meet the requirement of a high standard.

As an alternative embodiment of this embodiment, a column 106 is disposed between the first beam 101 and the second beam 102, a guiding beam 107 is connected to the column 106 through a linear bearing 108, and the guiding beam 107 is connected to the output end of the first driving portion. This embodiment ensures the positioning of the platen 100, and hence the sample to be tested on the platen 100, with the indenter 103. When the pressing plate 100 moves in the vertical direction, the output end of the first driving part is connected to the guide beam 107, and the guide beam 107 slides along the column 106 through the linear bearing 108. Therefore, the matching relationship between the upright columns 106 and the cross beam 107 can ensure that the pressing plate 100 and the sample to be tested are on the same axis with the pressing head 103, so that the coaxiality of the sample to be tested and the pressing head 103 is ensured, and further, when the plurality of upright columns 106 are arranged, the horizontal degree of the pressing plate 100 can be further ensured, and the verticality of the pressing head 103 and the sample to be tested is further ensured.

As an optional implementation manner of this embodiment, a first limit sensing portion 111 is disposed on the upright 106, a second limit sensing portion 112 is disposed on the first cross beam 101, and both the first limit sensing portion 111 and the second limit sensing portion 112 are matched with the guide cross beam 107. In this embodiment, first spacing response portion 111 on the stand 106, and the spacing response portion 112 of second on the first crossbeam 101, realized the stroke limiting displacement to guiding beam 107 jointly, and can further realize the limiting displacement of the whole stroke of first drive division to guiding beam 107's spacing, and then guarantee that clamp plate 100 and the sample of waiting to be examined can not be because of misoperation, and be driven by first drive division and rise, take place to surpass the contact that the test required with pressure head 103, collision each other takes place even, thereby influence the precision that hardness detected, damage the hardness detector even.

The first limit sensing part 111 and the second limit sensing part 112 in this embodiment can be both contact switches, and when the guide beam 107 touches the first limit sensing part 111 or the second limit sensing part 112, an electrical signal can be generated, so as to control whether the first driving part stops driving the platen 100 to move continuously. The first limit sensing part 111 and the second limit sensing part 112 may also be any commonly used contact or proximity sensing elements to control the stroke.

As an optional embodiment of this embodiment, the first driving unit includes a first stepping motor 121, the first stepping motor 121 is connected to a first lead screw 123 through a right-angle planetary reducer 122, and an output end of the first lead screw 123 is connected to the pressure plate 100. The embodiment is a preferable mode of the first driving portion, and in the embodiment, the first driving portion is formed by combining the stepping motor 121, the right-angle planetary reducer 122 and the first lead screw 123, which is beneficial to realizing the automatic control of the hardness tester, so that the intervention of manual operation is reduced, and the efficiency and the precision are improved. In this embodiment, the arrangement of the right-angle planetary reducer 122 can change the output direction of the stepping motor 121, which is further beneficial to the compactness of the overall structure for hardness detection. The first stepping motor 121 drives the first lead screw 123 to work through the right-angle planetary reducer 122, the first lead screw 123 has high precision, the accurate position adjustment of the pressing plate 100 and a sample to be tested can be met, and the integral precision of the hardness detector is favorably improved.

As an optional implementation manner of this embodiment, the second driving portion includes a second stepping motor 131, an output end of the second stepping motor 131 is connected to a second lead screw 132 through a meshed driving gear and a meshed transmission gear, and an output end of the second lead screw 132 is connected to the ram 103. The present embodiment is a preferable mode of the second driving portion, and in the present embodiment, the second driving portion is formed by combining the second stepping motor 131, the driving gear, the transmission gear, and the second lead screw 132, which is beneficial to realizing the automatic control of the hardness tester, so as to reduce the intervention of manual operation, and improve the efficiency and the precision. The second stepping motor 131 and the second lead screw 132 are arranged to control the up-and-down movement of the pressure head 103 when the hardness test is performed, so that the accurate control of the pressure applied to the test sample to be tested is realized, and the accuracy of the hardness detector is improved.

With the aforementioned embodiment, on the basis of the first driving portion formed by combining the stepping motor 121, the right-angle planetary reducer 122 and the first lead screw 123, the second driving portion formed by combining the second stepping motor 131, the driving gear, the transmission gear and the second lead screw 132 is matched, so that the automation degree of the hardness tester can be improved, the manual intervention is reduced, and the hardness testing efficiency and the testing accuracy are improved.

Example 2

The embodiment provides a hardness tester, which can be improved on the basis of embodiment 1 as follows: the output end of the second driving part is connected with a limit plate 113, a limit switch 114 is arranged on the second beam 102, and the limit plate 113 is matched with the limit switch 114. The limit plate 113 and the limit switch 114 of the present embodiment together implement the control of the stroke of the output end of the second driving portion, thereby controlling the overall stroke of the ram 103. The limit switch 114 in this embodiment can be a contact switch, and when the output end of the second driving portion drives the limit plate 113 to contact with the contact switch, the generated electric signal makes the second driving portion stop driving the ram 103 to move continuously, so as to limit the stroke of the ram 103. In addition, the limit switch 114 may be any conventional contact or proximity sensing element to achieve control of travel.

As an optional implementation manner of this embodiment, a supporting column 115 is disposed on the first cross beam 101, an adjusting cross beam 116 is disposed on the supporting column 115, and the adjusting cross beam 116 is fixedly connected to the first sensing unit 104. In this embodiment, the supporting pillar 115 is used as a supporting and fixing part, and the first sensing unit 104 is fixed and installed by the adjusting beam 116. When the position of the first sensing unit 104 on the adjusting beam 116 is changed, the adjustment of the position of the first sensing unit 104 can be realized. In addition, the position of the first sensing unit 104 in the vertical direction can also be changed by changing the position of the adjustment beam 116 on the support column 115. Through the setting of support column 115 and regulation crossbeam 116 for self position can be adjusted more in a flexible way to first sensing unit 104, with the realization to the more accurate displacement detection of pressure head 103.

As an optional implementation manner of this embodiment, a laser displacement sensor 109 is disposed on the second beam 102, and the laser displacement sensor 109 is disposed in match with the pressure plate 100. In this embodiment, in order to further improve the automation of the hardness tester, the laser displacement sensor 109 is disposed on the second beam 102, and the laser displacement sensor 109 is configured to detect a displacement change of the pressing plate 100, when the pressing plate 100 drives the sample to be tested to move, the hardness tester can determine whether the pressing plate 100 and the sample to be tested are close to a suitable position of the pressing head 103 by using position data of the pressing plate 100 collected by the laser displacement sensor 109 in real time, and automatically control whether the first driving portion continues to move or stops moving, thereby further reducing manual intervention and improving the efficiency and accuracy of hardness testing.

As an optional implementation manner of this embodiment, the present invention further includes a data acquisition controller, and the data acquisition controller is connected to both the first sensing unit 104 and the second sensing unit 105. In this embodiment, through setting up the data acquisition controller, the pressure head displacement data that will first sensing unit 104 detect and the pressure data that second sensing unit 105 detected integrate to can obtain all kinds of hardness data under the different test standards fast according to these data, realize high-efficiently and accurately obtaining hardness testing result.

As an optional implementation manner of this embodiment, the first sensing unit 104 is a grating multimeter, and the second sensing unit 105 is a load sensor. The first sensing unit 104 of this embodiment is configured to detect a displacement condition of the ram 103, and in order to improve detection accuracy, the first sensing unit 104 is preferably a grating ten-thousandth meter, for example, a high-accuracy grating ten-thousandth meter with an optional resolution of 0.0001mm, and it is conceivable that a grating ten-thousandth meter with a higher accuracy may be used, and the higher the resolution is, the higher the sampling accuracy is, and the more accurate the result is. The second sensing unit 105 of this embodiment is configured to detect a pressure applied by the pressure head 103 to the test sample, so that a load sensor, for example, a 0.1-level high-precision load sensor, may be selected, and in the same way as the optical grating ten-thousandth meter, the sampling precision is higher, and the result is more accurate.

The present invention and its embodiments have been described above schematically, and the description is not intended to be limiting, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, without departing from the spirit of the present invention, a person of ordinary skill in the art should understand that the present invention shall not be limited to the embodiments and the similar structural modes without creative design.

Claims

1. A hardness detector is characterized by comprising a first cross beam, wherein a first driving part is arranged on the first cross beam, a pressing plate is arranged at the output end of the first driving part, a second cross beam is arranged on one side of the first cross beam, a first sensing unit for detecting displacement is arranged on one side of the second cross beam, a second driving part is arranged on the second cross beam, a pressure head is arranged at the output end of the second driving part, and a second sensing unit for detecting pressure is arranged between the output end of the second driving part and the pressure head; the pressure head is matched with the pressure plate.

2. The hardness tester according to claim 1, wherein a column is disposed between the first beam and the second beam, a guide beam is connected to the column through a linear bearing, and the guide beam is connected to an output end of the first driving unit.

3. The hardness tester according to claim 2, wherein the column is provided with a first limit sensing portion, the first beam is provided with a second limit sensing portion, and the first limit sensing portion and the second limit sensing portion are both matched with the guide beam.

4. The hardness tester according to claim 1, wherein the first driving unit comprises a first stepping motor, the first stepping motor is connected to a first lead screw through a right-angle planetary reducer, and an output end of the first lead screw is connected to the pressure plate.

5. The hardness tester according to claim 1, wherein the second driving unit includes a second stepping motor, an output end of the second stepping motor is connected to a second lead screw through a meshed driving gear and a transmission gear, and an output end of the second lead screw is connected to the indenter.

6. The hardness detector according to claim 1, wherein an output end of the second driving portion is connected to a limit plate, the second beam is provided with a limit switch, and the limit plate is matched with the limit switch.

7. The hardness tester according to claim 1, wherein a supporting column is disposed on the first beam, an adjusting beam is disposed on the supporting column, and the adjusting beam is fixedly connected to the first sensing unit.

8. The hardness tester according to claim 1, wherein the second beam is provided with a laser displacement sensor, and the laser displacement sensor is matched with the pressure plate.

9. The hardness tester according to claim 1, further comprising a data acquisition controller, wherein the data acquisition controller is connected to both the first sensing unit and the second sensing unit.

10. The hardness tester according to claim 1, wherein the first sensing unit is a grating decimeter and the second sensing unit is a load cell.