Drilling time testing machine for diamond drill bit

Abstract

The utility model discloses a diamond drill bit drilling time testing machine, which comprises a machine table, a reciprocating swing mechanism, a vertical plate, a limit rod, an electric hand drill, a lifting rod and a jacking mechanism, the reciprocating swing mechanism, the limit rod and the jacking mechanism are all mounted on the machine table, and the vertical plate is slidably mounted at the movable end of the reciprocating swing mechanism along the vertical direction. The limiting rod is arranged opposite to the bottom of the vertical plate, the electric hand drill is vertically downward and detachably installed on the vertical plate, one end of the lifting rod is rotationally connected with the fixed end of the reciprocating swing mechanism, the other end of the lifting rod is arranged opposite to the movable end of the jacking mechanism, and the vertical plate is slidably connected with the lifting rod. The reciprocating swing mechanism, the electric hand drill and the jacking mechanism work in a coordinated mode through a PLC. The drilling time testing machine drills under a constant pressure in a slight swing mode, and the actual working condition that an electric hand drill is held for drilling is compared, so that the detection data can more accurately reflect the cutting performance and the service life index of the diamond drill bit.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bit detection devices, in particular to a drilling times testing machine for diamond drill bits. Background Technique

[0002] With the development of economy and the progress of technology, the consumer market has higher and higher requirements for product quality. After the diamond drill bit is produced, its performance needs to be tested to judge whether the quality of the diamond drill bit meets the requirements. As a consumable, the number of times of use (drilling) of the diamond drill bit is one of the important criteria affecting the quality. Generally, the detection process of the number of drilling times is as follows: install the diamond drill bit on the electric hand drill, and then the tester holds the electric hand drill to drill holes in the drilling material (such as tiles, stones or concrete blocks), and record the number of drilling times before the drill bit is scrapped and the penetration time of each hole, which are used as the main factors for judging the quality of the drill bit.

[0003] In the prior art, in order to replace the manual drilling times test of the drill bit, there is a Chinese invention patent with the publication number of CN108772751B and the name of drill bit performance test method and automatic testing machine, which simulates the electric hand drill to drill holes, records the drilling time and the total number, and evaluates the performance of the drill bit to be tested. When the testing machine drills holes, the drill bit drills straight. However, as a commonly used consumable in life, when the general user drills holes with an electric hand drill, they are used to drilling in a slightly (small amplitude) swinging manner, which is convenient for reaming and chip removal, so as to speed up the drilling speed and reduce the wear of the drill bit. Therefore, the drilling times test in the straight drilling mode cannot well reflect the actual operation, and the test results are also open to question. At present, there is an urgent need for a drilling times testing machine that can drill holes in a fully automatic and slightly swinging manner, accurately record the time and the number of drilled holes during the drilling process, so as to accurately judge the quality of the diamond drill bit. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a drilling times testing machine for diamond drill bits, so as to solve the problem that the existing drilling times testing machine for diamond drill bits drills straight during the drilling work, which does not conform to the slightly swinging drilling mode when drilling with an electric hand drill in reality, resulting in inaccurate and unrealistic test results.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A drilling test machine for a diamond drill bit comprises a machine platform, a reciprocating swing mechanism, a vertical plate, a limit rod, an electric hand drill, a lifting rod and a lifting mechanism, wherein the reciprocating swing mechanism, the limit rod and the lifting mechanism are all mounted on the machine platform, the vertical plate is slidably mounted on the movable end of the reciprocating swing mechanism along the vertical direction, the limit rod is arranged opposite to the bottom of the vertical plate, the electric hand drill is vertically downward and detachably mounted on the vertical plate, one end of the lifting rod is rotatably connected to the fixed end of the reciprocating swing mechanism, and the other end of the lifting rod is arranged opposite to the movable end of the lifting mechanism, the vertical plate is slidably connected to the lifting rod, and the reciprocating swing mechanism, the electric hand drill and the lifting mechanism work in coordination through a PLC controller; wherein,

[0007] The reciprocating swing mechanism comprises a motor, an eccentric wheel, a tension spring and a swing rod, wherein the motor is mounted on the machine platform, the eccentric wheel is mounted on the power output end of the motor, one end of the swing rod is rotatably connected to the machine platform, the two ends of the tension spring are respectively connected to the other end of the swing rod and the motor, the eccentric wheel is pressed against the swing rod, and the vertical plate is slidably mounted on the swing rod;

[0008] The lifting mechanism is a cylinder arranged vertically upward.

[0009] A further technical solution is: a counterweight is installed on the vertical plate.

[0010] A further technical solution is: the limit rod is slidably connected to the two sliding rods on the machine platform, and the bottom of the limit rod is supported by a nut.

[0011] A further technical solution is: a pressure sensor is provided between the nut and the limiting rod, and the pressure sensor is electrically connected to the PLC controller.

[0012] A further technical solution is: a top plate is installed on the top of the power output rod of the cylinder, a spring is sleeved on the power output rod of the cylinder, and two ends of the spring are respectively against the machine platform and the top plate.

[0013] A further technical solution is: an infrared induction timer facing the hand drill is arranged on the machine platform, an infrared induction counter facing the vertical plate is arranged on the swing arm, and the infrared induction timer and the infrared induction counter are electrically connected to the PLC controller.

[0014] A further technical solution is that a slider and rail structure is provided between the vertical plate and the swing rod.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] 1. The present utility model provides a drilling times testing machine for diamond bits, which drills under a constant pressure in a slightly swinging manner, quite close to the working conditions of handheld electric drills in practice, enabling the test data to more accurately reflect the cutting performance and life index of diamond bits.

[0017] 2. The lifting mechanism is not connected to the lifting rod, and the two are freely pressed against each other. When lifting the bit for the next drilling, it does not prevent the diamond bit from drilling out in a slightly swinging manner, enabling faster drilling out, improving the test efficiency, reducing the wear of the bit, and extending its service life.

[0018] 3. Both the drilling out and drilling of the diamond bit can be carried out in a slightly swinging manner, more realistically simulating the actual operation. Firstly, it ensures the accuracy of the test. Secondly, it ensures the objectivity and accuracy of the data. Thirdly, it strictly and rigorously judges the quality of the bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a drilling times testing machine for a diamond bit of the present utility model.

[0020] Figure 2 For the present utility model Figure 1 A schematic structural diagram from another perspective.

[0021] Figure 3 For the present utility model Figure 1 A schematic structural diagram from another perspective.

[0022] Reference numerals: 1, machine table; 2, reciprocating swing mechanism; 3, vertical plate; 4, limiting rod; 5, electric drill; 6, lifting rod; 7, lifting mechanism; 8, PLC controller; 9, motor; 10, eccentric wheel; 11, tension spring; 12, swing rod; 13, counterweight; 14, sliding rod; 15, nut; 16, top plate; 17, spring; 18, infrared induction timer; 19, infrared induction counter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.

[0024] Accordingly, the following detailed description of the embodiments of the present utility model provided in the drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0025] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0026] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] Example 1:

[0030] This example, such as Figure 1 , Figure 2 and Figure 3As shown, a drilling test machine for a diamond drill bit comprises a machine platform 1, a reciprocating swing mechanism 2, a vertical plate 3, a limit rod 4, a hand drill 5, a lifting rod 6 and a lifting mechanism 7. The reciprocating swing mechanism 2, the limit rod 4 and the lifting mechanism 7 are all mounted on the machine platform 1. The vertical plate 3 is slidably mounted on the movable end of the reciprocating swing mechanism 2 along the vertical direction. The limit rod 4 is arranged opposite to the bottom of the vertical plate 3. The hand drill 5 is vertically downward and detachably mounted on the vertical plate 3. One end of the lifting rod 6 is rotatably connected to the fixed end of the reciprocating swing mechanism 2, and the other end of the lifting rod 6 is opposite to the movable end of the lifting mechanism 7. The vertical plate 3 is slidably connected with the lifting rod 6, and the reciprocating swing mechanism 2, the hand drill 5 and the lifting mechanism 7 work in coordination through the PLC controller 8; the reciprocating swing mechanism 2 includes a motor 9, an eccentric wheel 10, a tension spring 11 and a rocker arm 12, the motor 9 is installed on the machine platform 1, the eccentric wheel 10 is installed on the power output end of the motor 9, one end of the rocker arm 12 is rotatably connected to the machine platform 1, the two ends of the tension spring 11 are respectively connected to the other end of the rocker arm 12 and the motor 9, the eccentric wheel 10 is pressed against the rocker arm 12, and the vertical plate 3 is slidably installed on the rocker arm 12; the lifting mechanism 7 is a cylinder arranged vertically upward.

[0031] First, install the diamond drill bit to be tested on the hand drill 5 of the drilling test machine, then place the material to be drilled (such as glass, high-hardness ceramic tile or stone, etc.) on the machine platform 1, and after completing the test preparations, start the drilling test machine. The motor 9 rotates with the eccentric wheel 10, and under the action of the tension spring 11, the swing rod 12 makes a small swinging motion on the machine table 1. At this time, under the constant weight of the hand electric drill 5 and the vertical plate 3 and other components, the diamond drill bit descends and swings to drill on the drilling material until it is drilled through. The lifting mechanism 7 (i.e., the cylinder) lifts the lifting rod 6 upward and raises the hand electric drill 5. At this time, there are two drilling methods. The first is that the motor 9 continues to work, and the diamond drill bit rises and swings to drill on the drilling material; the second is that the motor 9 stops working, and the diamond drill bit rises straightly to drill on the drilling material. When drilling, in order to ensure that the drilling material will not move or shake, hand pressure or other clamping methods can be used. Once the current drilling is completed, the drilling material can be moved and the next drill bit can be used until the drill bit reaches the scrap standard, and the number of holes drilled before the drill bit is scrapped and the time for each hole to be drilled through are recorded.

[0032] The machine platform 1 is provided with a through hole for the drill bit to pass through during drilling.

[0033] Preferably, a counterweight 13 is installed on the vertical plate 3 .

[0034] When drilling in a drilling material that is difficult to drill, it is necessary to use the counterweight block 13 to provide greater pressure to speed up or ensure drilling.

[0035] Preferably, the limiting rod 4 is slidably connected to the two sliding rods 14 on the machine platform 1 , and the bottom of the limiting rod 4 is supported by a nut 15 .

[0036] The limiting rod 4 is height-adjustable on the two sliding rods 14 through the nut 15 , and the two sliding rods 14 are threadedly connected with the nut 15 . The diameter of the sliding rod 14 is smaller than the diameter of the through hole on the limiting rod 4 .

[0037] Preferably, a pressure sensor is provided between the nut 15 and the limiting rod 4 , and the pressure sensor is electrically connected to the PLC controller 8 .

[0038] When the diamond drill bit has not drilled through, the pressure sensor only receives the pressure from the limit rod 4, which is very small and has not reached the threshold value at this time; once the hole is drilled through, the vertical plate 3 immediately presses down the limit rod 4 without any hindrance, and the pressure is relatively large. When it reaches or exceeds the threshold value, the PLC controller 8 will receive a signal, knowing that the drilling is completed and preparing for the next drilling.

[0039] Embodiment 2:

[0040] On the basis of the above embodiment, this embodiment shows that a top plate 16 is installed on the top of the power output rod of the cylinder, and a spring 17 is sleeved on the power output rod of the cylinder, and the two ends of the spring 17 are respectively against the machine 1 and the top plate 16.

[0041] The hand drill 5 falls to a certain position under the action of gravity, where the drill bit does not contact the drilling material, and the spring 17 holds the hand drill 5 through the top plate 16. After a period of time, the hand drill 5 falls slowly under the action of the spring 17. When it reaches the position where it will contact the drilling material, the cylinder contracts the power output rod and compresses the spring 17, and the drill bit on the hand drill starts to contact the drilling material to drill. This is to prevent the drill bit from falling quickly and causing damage, and to ensure the automatic repeated drilling of the diamond drill bit.

[0042] Preferably, the machine platform 1 is provided with an infrared induction timer 18 facing the hand drill 5 , and the swing arm 12 is provided with an infrared induction counter 19 facing the vertical plate 3 , and the infrared induction timer 18 and the infrared induction counter 19 are electrically connected to the PLC controller 8 .

[0043] The infrared sensing timer 18 records the drilling time according to the rising and falling time periods of the hand drill 5, and the infrared sensing counter 19 records the number of drilling times according to the rising and lowering times of the vertical plate 3. With the help of the infrared sensing timer 18 and the infrared sensing counter 19, the drilling times and drilling time are automatically recorded.

[0044] Preferably, a slider and rail structure is provided between the vertical plate 3 and the rocker rod 12 .

[0045] The sliding block and the slide rail are slidably matched to ensure the stability of the vertical board 3 in operation.

[0046] Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements on some of the technical features thereof. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A drilling test machine for a diamond drill bit, characterized in that: The invention comprises a machine platform (1), a reciprocating swing mechanism (2), a vertical plate (3), a limit rod (4), a hand-held electric drill (5), a lifting rod (6) and a lifting mechanism (7); the reciprocating swing mechanism (2), the limit rod (4) and the lifting mechanism (7) are all mounted on the machine platform (1); the vertical plate (3) is slidably mounted on the movable end of the reciprocating swing mechanism (2) in the vertical direction; the limit rod (4) is arranged opposite to the bottom of the vertical plate (3); the hand-held electric drill (5) is vertically downwardly and detachably mounted on the vertical plate (3); one end of the lifting rod (6) is rotatably connected to the fixed end of the reciprocating swing mechanism (2), and the other end of the lifting rod (6) is arranged opposite to the movable end of the lifting mechanism (7); the vertical plate (3) is slidably connected to the lifting rod (6); the reciprocating swing mechanism (2), the hand-held electric drill (5) and the lifting mechanism (7) work in coordination through a PLC controller (8); wherein: The reciprocating swing mechanism (2) comprises a motor (9), an eccentric wheel (10), a tension spring (11) and a swing rod (12); the motor (9) is mounted on the machine platform (1); the eccentric wheel (10) is mounted on the power output end of the motor (9); one end of the swing rod (12) is rotatably connected to the machine platform (1); two ends of the tension spring (11) are respectively connected to the other end of the swing rod (12) and the motor (9); the eccentric wheel (10) is pressed against the swing rod (12); and the vertical plate (3) is slidably mounted on the swing rod (12); The lifting mechanism (7) is a cylinder arranged vertically upward.

2. The drilling test machine for diamond drill bits according to claim 1, characterized in that: A counterweight block (13) is mounted on the vertical plate (3).

3. The drilling test machine for diamond drill bits according to claim 1, characterized in that: The limiting rod (4) is slidably connected to two sliding rods (14) on the machine platform (1), and the bottom of the limiting rod (4) is supported by a nut (15).

4. The drilling test machine for diamond drill bits according to claim 3, characterized in that: A pressure sensor is provided between the nut (15) and the limiting rod (4), and the pressure sensor is electrically connected to the PLC controller (8).

5. The drilling test machine for diamond drill bits according to claim 1, characterized in that: A top plate (16) is installed on the top of the power output rod of the cylinder, and a spring (17) is sleeved on the power output rod of the cylinder, with two ends of the spring (17) respectively abutting against the machine platform (1) and the top plate (16).

6. The drilling test machine for diamond drill bits according to claim 1, characterized in that: The machine platform (1) is provided with an infrared sensing timer (18) facing the hand electric drill (5), and the swing arm (12) is provided with an infrared sensing counter (19) facing the vertical plate (3). The infrared sensing timer (18) and the infrared sensing counter (19) are electrically connected to the PLC controller (8).

7. The drilling test machine for diamond drill bits according to claim 1, characterized in that: A slider and rail structure is provided between the vertical plate (3) and the swing rod (12).

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