Material surface microhardness testing device

Abstract

The utility model provides a material surface microhardness testing device, and relates to the technical field of microhardness measurement. The transmission seat is connected with the pressure equipment, a motor is mounted outside the transmission seat, a screw rod is connected inside the transmission seat, and a driving shaft of the motor is connected with the screw rod; the bottom of the transmission seat is connected with a metal cylinder, and the screw rod is connected with the metal cylinder; the bottom of the metal cylinder is connected with a metal circular truncated cone piece, a bearing is installed in the bottom of the metal circular truncated cone piece, and a diamond drill bit is installed in the bearing. And the outside of the metal cylinder is connected with a lock pin. According to the utility model, the diamond drill bit linearly moves on different interfaces of a measured object, the measured object after acting forms different bandwidths, and one bandwidth value corresponds to one microhardness value, so that the improvement from point to line is realized, and the measurement efficiency is greatly improved; as the object to be measured has different interfaces, the combination of the sensor and the diamond bit is additionally arranged in a matched mode, and large errors existing in current single measurement can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to microhardness measurement technical field especially relates to a material surface microhardness testing device. BACKGROUND

[0002] The industry laboratory of material often involves the measurement of material surface microhardness, and the microhardness is a kind of indentation hardness, which reflects the ability of a certain object to resist the indentation of another stronger hardness object; the usual measuring instrument is microhardness tester, which is a microscope equipped with a load device and a ocular micrometer; the object to be measured needs to be polished and placed on the microhardness tester stage, and then different loads are set to make the load device act on the measured object, and the indenter of the load device is usually a four-pyramidal diamond or a circular diamond, and a crater is generated on the sample surface after the action, and the microhardness value is obtained by measuring the crater length.

[0003] The data of traditional Vickers hardness and Rockwell hardness measurement is single data, and if the measured object has different interfaces, the indentation at the interface connection does not have regularity, and the indentation length range needs to be determined by artificial judgment, which greatly increases the microhardness error. SUMMARY

[0004] The present disclosure relates to a material surface microhardness testing device, which solves the problem that the data of traditional Vickers hardness and Rockwell hardness measurement is single data, and if the measured object has different interfaces, the indentation at the interface connection does not have regularity, and the indentation length range needs to be determined by artificial judgment, which greatly increases the microhardness error.

[0005] In a first aspect, the present disclosure provides a material surface microhardness testing device, which specifically comprises: a transmission seat, a motor, a screw rod, a metal cylinder, a metal circular table piece, a bearing, a diamond drill bit and a locking pin; the transmission seat is connected with a pressure device, a motor is installed outside the transmission seat, a screw rod is connected inside the transmission seat, and the driving shaft of the motor is connected with the screw rod; the bottom of the transmission seat is connected with a metal cylinder, and the screw rod is connected with the metal cylinder; the bottom of the metal cylinder is connected with a metal circular table piece, a bearing is installed inside the bottom of the metal circular table piece, and a diamond drill bit is installed inside the bearing; the outside of the metal cylinder is connected with a locking pin, and the locking pin is connected with the metal circular table piece.

[0006] Further, the diamond drill bit is in the shape of a sphere, and the diamond drill bit is rotatably connected inside the bearing, and the stress limit of the bearing is greater than the external force brought by the diamond drill bit to the measured material.

[0007] Further, a sliding groove is arranged inside the transmission seat, the top of the metal cylinder is in the shape of T, and the top of the metal cylinder is slidably connected inside the sliding groove.

[0008] Further, the screw is rotationally connected in the sliding groove, a screw hole is arranged at the top of the metal cylinder, and the screw is threadedly connected in the screw hole.

[0009] Further, the metal circular table part is inserted at the top of the metal cylinder, a clamping block is arranged outside the metal circular table part, an L-shaped clamping groove is arranged outside the metal cylinder, and the clamping block is connected in the L-shaped clamping groove.

[0010] Further, a guide hole is arranged outside the metal cylinder, a positioning groove is arranged outside the metal circular table part, the positioning groove is communicated with the guide hole, and a locking pin is slidingly connected in the guide hole and slidingly inserted in the positioning groove.

[0011] Further, a tension spring is sleeved outside the locking pin, one end of the tension spring is connected in the locking pin, and the other end of the tension spring is welded with the metal circular table part.

[0012] The utility model provides a material surface microhardness testing arrangement, has the following beneficial effect:

[0013] In use, the motor drives the screw to rotate, the screw drives the metal cylinder to move along the sliding groove, the diamond drill bit is pressed into the measured object, the metal circular table part drives the diamond drill bit to move linearly on different interfaces of the measured object, the measured object after action forms different bandwidths, one bandwidth value corresponds to one microhardness value, the promotion from point to line is realized, and the measurement efficiency is greatly improved; in view of the different interfaces of the measured object, the combination of the added sensor and the diamond drill bit can reduce the large error existing in current single measurement, the operation is simple, observation is easy, operation is reliable, control is stable, the uncertain factors caused by artificial measurement and the data error caused by the nature of the measured object can be effectively reduced, and the refinement and automation of object microhardness measurement are realized.

[0014] In addition, when the metal circular table part is inserted into the metal cylinder, the clamping block is connected to the innermost end of the L-shaped clamping groove, the positioning groove and the guide hole are in communication, the locking pin moves inward under the influence of the tension spring, the end of the locking pin is slidingly inserted into the positioning groove, and the locking pin plays a fixing effect on the metal circular table part; when the metal circular table part, the bearing and the diamond drill bit need to be replaced as a whole, the locking pin is pulled outward, the end of the locking pin is separated from the positioning groove, the metal circular table part is rotated, and the metal circular table part and the metal cylinder can be separated, so that disassembly and assembly are more convenient.

[0015] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through research and practice of the utility model. ACCURACY OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0017] The drawings in the following description are merely some embodiments of the present application, and are not a limitation of the present application.

[0018] In the drawings:

[0019] Fig. 1 The overall bottom shaft side structure schematic diagram of the present application is shown;

[0020] Fig. 2 The transmission seat, motor and screw rod connecting structure schematic diagram of the present application is shown;

[0021] Fig. 3 The metal cylinder, metal circular table piece, bearing, diamond drill bit, lock pin and tension spring connecting structure schematic diagram of the present application is shown;

[0022] Fig. 4 The metal cylinder, metal circular table piece and lock pin split structure schematic diagram of the present application is shown.

[0023] List of reference signs

[0024] 1, transmission seat; 101, sliding groove; 2, motor; 3, screw rod; 4, metal cylinder; 401, screw hole; 402, L-shaped clamping groove; 403, guide hole; 5, metal circular table piece; 501, clamping block; 502, positioning groove; 6, bearing; 7, diamond drill bit; 8, lock pin; 9, tension spring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Embodiment one: please refer to Figs. 1 to 4 :

[0027] The utility model provides a material surface microhardness testing device, include: transmission seat 1, motor 2, screw rod 3, metal cylinder 4, metal round table spare 5, bearing 6, diamond drill bit 7 and locking pin 8, transmission seat 1 links with pressure equipment, transmission seat 1 outside is equipped with motor 2, transmission seat 1 inside is connected with screw rod 3, the driving shaft of motor 2 links with screw rod 3, transmission seat 1 bottom is connected with metal cylinder 4, screw rod 3 links with metal cylinder 4, metal cylinder 4 bottom is connected with metal round table spare 5, and bearing 6 is installed in metal round table spare 5 bottom, and bearing 6 is installed with diamond drill bit 7 in, metal cylinder 4 outside is connected with locking pin 8, and locking pin 8 links with metal round table spare 5, diamond drill bit 7 its shape is spherical ball, and diamond drill bit 7 is rotatably connected in bearing 6, and the stress limit of bearing 6 is greater than the external force that diamond drill bit 7 is pressed into the material to be measured brings to it, transmission seat 1 inside is provided with the sliding slot 101, and the top of metal cylinder 4 is T-shaped, and the top of metal cylinder 4 is slidably connected in the sliding slot 101, screw rod 3 is rotatably connected in the sliding slot 101, and the top of metal cylinder 4 is provided with the screw hole 401, and screw rod 3 is screw-connected in the screw hole 401, motor 2 drives screw rod 3 to rotate, and screw rod 3 drives metal cylinder 4 to move along the sliding slot 101, and diamond drill bit 7 is pressed into the measured object, and metal round table spare 5 drives diamond drill bit 7 to be linear motion on the different interface of measured object, and the measured object after action forms different bandwidth, and one bandwidth value corresponds to one microhardness value, realizes the promotion from point to line, greatly improves the measurement efficiency, aiming at the different interface of the measured object, the combination of the added sensor and diamond drill bit 7 can reduce the large error existing in the current single measurement, is easy to operate, is easy to observe, is reliable in operation, is stable in control, can effectively reduce the uncertain factor of artificial measurement and the data error of the nature of the measured object itself, realizes the refinement and automation of object microhardness measurement.

[0028] In the embodiment two, on the basis of the embodiment one, the metal round table spare 5 top is inserted in the metal cylinder 4 bottom, the metal round table spare 5 outside is provided with the clamping block 501, the metal cylinder 4 outside is provided with the L-shaped clamping slot 402, the clamping block 501 is connected in the L-shaped clamping slot 402, the metal cylinder 4 outside is provided with the guide hole 403, the metal round table spare 5 outside is provided with the positioning slot 502, the positioning slot 502 is linked with the guide hole 403, the locking pin 8 is slidably connected in the guide hole 403, the locking pin 8 end is slidably inserted in the positioning slot 502, the locking pin 8 outside is sleeved with the tension spring 9, and one end of the tension spring 9 is connected in the locking pin 8, and the other end of the tension spring 9 is welded together with the metal round table spare 5.

[0029] When the top of the metal circular cone 5 is inserted into the bottom of the metal cylinder 4, the clamping block 501 is connected to the innermost end of the L-shaped clamping groove 402, the positioning groove 502 is in communication with the guide hole 403, the locking pin 8 is moved inward under the influence of the tension spring 9, the end of the locking pin 8 is inserted into the positioning groove 502, and the locking pin 8 plays a fixing effect on the metal circular cone 5; when the metal circular cone 5, the bearing 6 and the diamond drill bit 7 need to be replaced as a whole, the locking pin 8 is pulled outward, the end of the locking pin 8 is separated from the positioning groove 502, and the metal circular cone 5 is separated from the metal cylinder 4 by rotating the metal circular cone 5, so that the disassembly is more convenient.

[0030] The working principle of the embodiment is as follows: when the top of the metal circular cone 5 is inserted into the bottom of the metal cylinder 4, the clamping block 501 is connected to the innermost end of the L-shaped clamping groove 402, the positioning groove 502 is in communication with the guide hole 403, the locking pin 8 is moved inward under the influence of the tension spring 9, the end of the locking pin 8 is inserted into the positioning groove 502, and the locking pin 8 plays a fixing effect on the metal circular cone 5; the motor 2 drives the screw rod 3 to rotate, the screw rod 3 drives the metal cylinder 4 to move along the sliding groove 101, the diamond drill bit 7 is pressed into the measured object, the metal circular cone 5 drives the diamond drill bit 7 to move linearly on different interfaces of the measured object, the measured object after the action forms different bandwidths, one bandwidth value corresponds to one microhardness value, the promotion from point to line is realized, and the measurement efficiency is greatly improved; when the metal circular cone 5, the bearing 6 and the diamond drill bit 7 need to be replaced as a whole, the locking pin 8 is pulled outward, the end of the locking pin 8 is separated from the positioning groove 502, and the metal circular cone 5 is separated from the metal cylinder 4 by rotating the metal circular cone 5, so that the disassembly is more convenient.

[0031] In this paper, the following points need attention:

[0032] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0033] 2. In the case of no conflict, the embodiments of the present disclosure and the features in the embodiments can be combined to obtain new embodiments.

[0034] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A device for testing the microhardness of a material surface, comprising: The transmission base (1), motor (2), screw (3), metal cylinder (4), metal frustum (5), bearing (6), diamond drill bit (7), and locking pin (8) are characterized in that the transmission base (1) is connected to the pressure equipment, the motor (2) is installed on the outside of the transmission base (1), the screw (3) is connected inside the transmission base (1), and the drive shaft of the motor (2) is connected to the screw (3); the bottom of the transmission base (1) is connected to the metal cylinder (4), and the screw (3) is connected to the metal cylinder (4); the bottom of the metal cylinder (4) is connected to the metal frustum (5), the bottom of the metal frustum (5) is installed with the bearing (6), and the bearing (6) is installed with the diamond drill bit (7); the outside of the metal cylinder (4) is connected to the locking pin (8), and the locking pin (8) is connected to the metal frustum (5).

2. The material surface microhardness testing device according to claim 1, characterized in that, The diamond drill bit (7) is spherical in shape and is rotatably connected to the bearing (6). The bearing (6) has a force limit greater than the external force exerted on it by the diamond drill bit (7) pressing into the material to be tested.

3. The material surface microhardness testing device according to claim 1, characterized in that, The transmission seat (1) is provided with a sliding groove (101), and the top of the metal cylinder (4) is T-shaped, and the top of the metal cylinder (4) is slidably connected in the sliding groove (101).

4. The material surface microhardness testing device according to claim 1, characterized in that, The screw (3) is rotatably connected to the slide groove (101), and a screw hole (401) is provided in the top of the metal cylinder (4), and the screw (3) is threaded into the screw hole (401).

5. The microhardness testing device for material surface according to claim 1, characterized in that, The top of the metal frustum (5) is inserted into the bottom of the metal cylinder (4). A locking block (501) is provided on the outside of the metal frustum (5), and an L-shaped slot (402) is provided on the outside of the metal cylinder (4). The locking block (501) is connected to the L-shaped slot (402).

6. The material surface microhardness testing device according to claim 1, characterized in that, The metal cylinder (4) has a guide hole (403) on its outside, and the metal frustum (5) has a positioning groove (502) on its outside. The positioning groove (502) is connected to the guide hole (403), and the locking pin (8) is slidably connected in the guide hole (403). The end of the locking pin (8) is slidably inserted into the positioning groove (502).

7. The material surface microhardness testing device according to claim 1, characterized in that, The locking pin (8) is fitted with a tension spring (9) on the outside. One end of the tension spring (9) is connected to the inside of the locking pin (8), and the other end of the tension spring (9) is welded to the metal frustum part (5).

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