Method for removing a core sample from a core drill bit of a core drill and a core drill

Abstract

Disclosed is a method for removing a core sample (5) from a core drill bit (2) of a core drill (1), comprising the following method steps: detecting, by said core drill (1), an intuitive movement of the core drill (1) and initiating a process of removing the core sample (5) by vibration. A second aspect of the invention relates to a core drill for implementing the proposed method.

Description

Technical Field

[0001] The present invention relates to a method for releasing a drill core from a drill bit of a core drill device that recognizes an intuitive operation and uses it as a trigger for the vibration process of the drill core. The intuitive operation can be, for example, the vibration operation of the core drill device. In a second aspect, the present invention relates to a core drill device for implementing the proposed method. The core drill device preferably includes a sensor system for detecting an intuitive operation of the core drill device, and the sensor system can include, for example, a gyro sensor.

Background Art

[0002] Core drill devices capable of cutting out cylindrical drill cores from solid substrates such as concrete, stone, or rock are known in the prior art. The core drill device has a drill bit that is substantially cylindrical as a tool, and the inside of this drill bit is hollow to receive the drill core. Users of core drill devices know from experience that it can be difficult to remove the drill core from the drill bit.

[0003] In the prior art, for example, it is known to remove the drill core from the drill bit by mechanical means. To do this, the drill bit is separated from the core drill device, and the drill core is released from the drill bit by shaking or hitting it with a hammer, and an attempt is made to remove the drill core from the inside of the drill bit. This procedure can sometimes be very laborious and time-consuming. Furthermore, the drill bit may be damaged by the impact of the hammer, and its service life may be shortened.

[0004] Accordingly, other methods of releasing a drill core from a drill bit (hereinafter referred to as the electronic method for releasing a drill core from a drill bit) have become known in the prior art. The drill bit remains on the core drill device, and the vibration process is initiated for the core drill device by activating a switch specially provided for this purpose. Such a process can be called an electronic vibration process in the sense of the present invention.

[0005] However, it has been found that providing a separate switch for the electronic vibration function is complex to implement. In addition, providing such a switch is not desirable for space reasons, and it cannot be guaranteed that it is ergonomically recommended for the user of the core drill device to activate such a switch. Furthermore, additional switches and operator control elements require additional space, which is contrary to the needs of a compact and convenient power tool.

[0006] The underlying object of the present invention is to overcome the above-mentioned disadvantages of the prior art and to provide a method for releasing a drill core from a drill bit of a core drill device that does not require an additional switch for the electronic vibration function of the core drill device. Furthermore, those skilled in the art will appreciate it if the vibration function can be started as intuitively as possible without the user having to press complex key combinations or perform operations. Furthermore, the provided core drill device should be formed to be as compact and convenient as possible. SUMMARY OF THE INVENTION MEANS FOR SOLVING THE PROBLEM

[0007] This object is achieved by the subject matter of the independent claims. Advantageous embodiments related to the subject matter of the independent claims can be described in the dependent claims.

[0008] According to the present invention, a method for releasing a drill core from a drill bit of a core drill device is provided. The method comprises the following steps, namely, a) Detecting the intuitive operation of the core drill device by the core drill device; b) Initiating the vibration process of the drill core; characterized by.

[0009] The proposed method can provide a method that preferably automatically initiates an electronic vibration function without the need for an additional switch for the electronic vibration function of the core drill device. Furthermore, the method can be particularly intuitively executed because the user can perform an intuitive operation on the core drill device and this operation can be recognized by the core drill device. For this purpose, the core drill device preferably includes a suitable sensor system having a gyro sensor for detecting the intuitive operation of the core drill device. The sensor system may preferably be designed as a sensor unit, and at least one gyro sensor of this sensor unit is preferably set to detect the intuitive operation of the core drill device. The intuitive operation can be, for example, a vibration operation of the core drill device. In other words, in the context of the present invention, the intuitive operation of the core drill device includes a vibration operation, and it is preferable that the detection of the intuitive operation can be used as a trigger or start signal for the vibration process of the drill core. During the vibration operation, the core drill device moves substantially along the Z-axis of the virtual coordinate system (see FIG. 1), which corresponds to the vibration operation. Such a vibration operation for mechanically vibrating the drill core out of the drill bit is known from the prior art. However, this vibration operation may include not only components of motion in all three spatial directions but also rotations around all three spatial axes. In the context of the present invention, a familiar vibration operation known to the user is used as the intuitive operation to initiate or start a preferably electronic vibration process for vibrating the drill core out of the drill bit. Therefore, the vibration process preferably starts automatically after the core drill device or its sensor system recognizes the intuitive operation. The advantage for the user is that they can substantially maintain the same behavior for removing the drill core from the drill bit, particularly vibrating the drill device to release the drill core from the drill bit. However, in the context of the present invention, it is sufficient not to perform the vibration operation too violently.Rather, it may be sufficient to merely suggest an intuitive vibration movement or to carry out an intuitive vibration movement to such an extent that it can be recognized by the core drill device or its sensor system, in particular by a gyro sensor. The user advantageously recognizes whether his intuitive movement has been recognized as such by the core drill device when the core drill device begins to vibrate the motor by means of an electric current and the core drill device starts a known electronic vibration process (mechatronic torque control, MTC). During this vibration process, a strong torque preferably occurs in alternating directions, and the torque generated is greater than the static friction moment between the drill bit and the drill core. The drill core can be loosened by the torque and released or removed from the drill bit.

[0010] In the context of the present invention, the core drill device preferably includes a motor and is configured to vibrate the motor by means of an electric current.

[0011] In the context of the present invention, it is also preferred that the vibration process is an electronic function that can be originally implemented in a core drill device, for example. Different from the case of a conventional core drill device known from the prior art, in the context of the present invention, it is not necessary to start the vibration process by using a specially provided button or switch for this purpose. Rather, in the context of the present invention, the functions of the core drill device are utilized, the operations performed by or acting on the core drill device are recognized and evaluated, and they are used to control or start individual functions. A sensor system including at least one gyro sensor is preferably used to detect these movements, which are referred to as "intuitive operations" in the context of the present invention. In other words, in the context of the present invention, the intuitive operation of the core drill device is preferably detected by a sensor system including at least one gyro sensor. The at least one gyro sensor can also be used, for example, for other functions or their activation. For example, the active torque control (ATC) function can be based on data from the gyro sensor.

[0012] The gyro sensor is preferably set to detect data regarding the operation of the core drill device in all three spatial directions. In particular, rotations around all three spatial axes X, Y, and Z can be detected in this way. The rotation data regarding the X-axis, Y-axis, and / or Z-axis preferably determined by the gyro sensor can be advantageously used to recognize the intuitive operation of the core drill device by the user. An exemplary coordinate system formed by the three spatial axes X, Y, and Z is shown in FIG. 1. In the context of the present invention, since preferably movements in all three spatial directions can be recognized as intuitive operations by the core drill device, there is great flexibility and freedom in the selection and definition of the desired intuitive operations. In the context of the present invention, the intuitive operation may preferably be also referred to as "prescribed device operation" or "remarkable operation".

[0013] In the context of the present invention, the sensor system of the core drill device is preferably configured to detect the intuitive movement of the core drill device, particularly the "rotational movement component". In the context of the present invention, these are preferably movement components related to rotation around the three spatial axes X, Y, and Z (see Figure 1). In the context of the present invention, the intuitive movement preferably may include linear and / or rotational movement components. The linear movement component preferably corresponds to movement along or substantially parallel to the spatial axes. The core drill device or its sensor system is preferably configured to recognize both the linear and rotational movement components of the intuitive movement. The inventors have recognized that when the user vibrates the core drill device, the core drill device does not perform a precise linear movement as expected, for example, from a rigid mechanical test configuration. In the context of the present invention, it has been recognized that, in particular, the curved or rotational component of the vibrational movement of the core drill device can be particularly well recognized by a gyro sensor. Therefore, in the context of the present invention, the sensor system of the core drill device preferably has at least one gyro sensor for detecting the curved movement component of the intuitive movement of the core drill device.

[0014] In a preferred embodiment of the present invention, the core drill device may be configured to be activated by a further operation by the user between the detection of the intuitive movement and the start of the vibration process. In other words, this embodiment may include an additional method step in which the user performs an operation called a "further operation" in the context of the present invention, in addition to the intuitive movement, in order to start the core drill device.

[0015] In the context of the present invention, it is preferred that the core drill device is ready for operation while vibrating. This preferably means, in the context of the present invention, that the electronics of the device and its sensor system are active. However, it is preferred that the motor of the core drill device does not operate during the vibration process. Also, the trigger does not actuate during vibration. In the context of the present invention, it is preferred that the trigger is pressed after vibration, as a result of which the core drill device starts the vibration process. The vibration process is preferably initiated, in particular, by the motor of the core drill device. Thereafter, the trigger can be released again, thereby advantageously stopping the operation of the motor.

[0016] A further operation by the user of the core drill device can be, for example, that the user actuates the on-switch of the core drill device. In other words, the method in this preferred embodiment includes an additional method step of the core drill device being switched on by the user, and this switching on of the core drill device is preferably effected by actuating the on-switch of the core drill device. The on-switch of the core drill device can preferably also be referred to as the "trigger" or "switch device" in the context of the present invention.

[0017] In the context of the present invention, in order to initiate a preferably electronic vibration process for releasing the drill core from the drill bit, depending on the embodiment, in the context of the present invention, it is preferred that a maximum of two operations by the user are required, specifically, the implementation of an intuitive operation with the core drill device and, optionally, another operation which may be, for example, the operation of actuating the trigger of the core drill device. Thus, the activation of the vibration process, which is preferably in electronic form, can be carried out much more easily and intuitively in the present invention than with conventional core drill devices known from the prior art. Advantageously, the handling of the proposed core drill device can thus be made significantly easier compared to conventional core drill devices. Furthermore, the structure of the core drill device preferably does not require an additional switch for turning on the electronic vibration process. This is because such a switch is no longer necessary due to the advantageous interaction of the intuitive operation and its recognition by the core drill device as is the case with the present invention. By eliminating the need for an additional switch, the present invention makes it possible to provide a particularly compact and convenient core drill device that is easier to handle.

[0018] In the context of the present invention, it is preferable that the vibration process is terminated by a second operation by the user of the core drill device. This preferably means, in the context of the present invention, that the user can terminate the preferably electronic vibration process for releasing the drill core from the drill bit by performing a second operation. This may be the same operation as when turning on the vibration process. However, in the context of the present invention, it may also be preferable in some cases that the switch-on and switch-off of the vibration process are performed by different operations by the user. In a first case where the further operation and the second operation are the same, the switch-on and switch-off can each be performed, for example, by actuating the on-switch of the core drill device. In a second case where the further operation and the second operation are not the same, the switch-on of the vibration process may be performed, for example, by actuating the on-switch of the core drill device, and the switch-off is performed by another operation such as releasing the on-switch of the core drill device. In the context of the present invention, it is particularly preferable that the vibration process is switched off by releasing the trigger of the core drill device. The switch-off of the vibration process is preferably also referred to as the stop of the vibration process in the context of the present invention. In this case, the core drill device preferably terminates the vibration caused by the current of the motor of the core drill device, and the vibration operation for releasing the drill core from the drill bit stops.

[0019] In the context of the present invention, it is preferable that the vibration process is brought about by vibrating the motor of the core drill device by means of an electric current. This means that the vibration process is particularly constituted by vibrating the motor of the core drill device by means of an electric current.

[0020] In a second aspect, the present invention relates to a core drill device for implementing the proposed method. The terms, definitions, and technical advantages introduced for the method of releasing a drill core from a drill bit preferably apply equally to the core drill device. In the context of the present invention, it is particularly preferred that the core drill device includes a sensor system including at least one gyro sensor. The gyro sensor is specifically set to detect the operation of the core drill device and provide a basis for recognizing a specific operation or a specific operation pattern of the core drill device as an "intuitive operation" in the context of the present invention. For this purpose, exemplary operations and / or operation patterns associated with the "intuitive operation" may be stored in the core drill device, and the core drill device can determine whether there is an "intuitive operation" in the context of the present invention by comparing the operation and / or operation pattern detected by the sensor system with the stored operation and / or operation pattern. These processes or evaluations can be carried out, for example, in the control device of the core drill device. When the "intuitive operation" of the core drill device is recognized by the core drill device or its sensor system, a preferably electronic vibration process of the core drill device is preferably automatically started, and thus the drill core is removed from the drill bit. In the context of the present invention, it is preferred that the core drill device includes a control device set to recognize the intuitive operation of the core drill device and start a vibration process as a response to the recognition of the intuitive operation.

[0021] In the context of the present invention, it is most particularly preferred that the core drill device does not require an additional switch to initiate the vibration process. As explained, according to the present invention, the vibration process is initiated by recognizing the intuitive operation of the core drill device, so it is possible to dispense with a switch that is specifically intended to initiate the vibration process. In other words, preferably, the originally existing sensors or data already collected elsewhere, such as rotational data, can be better utilized by the present invention and can be used to control other functions, such as the vibration process.

[0022] An advantage of the present invention is that it can provide a particularly intuitive activation of the vibration process for releasing the drill core from the drill bit.

[0023] In addition, it enables a simple, intuitive and straightforward operation of the core drill device, which is managed with a particularly small number of switches. As a result, in particular, the manufacturing cost of the core drill device can also be kept low, and a space-saving and compact core drill device can be provided. This can be particularly advantageous, especially when a hand-held core drill device is provided instead of a stand-mounted core drill device.

[0024] In one exemplary embodiment, the present invention relates to a method for removing a drill core from the drill bit of a core drill device. In this case, first, a core drill device having a drill bit is provided. The drill bit can contain a drill core from a previously performed core drilling. The core drill device includes a sensor unit for recognizing a defined device operation for removing the drill core from the drill bit, and the defined device operation is performed on the core drill device by the user of the core drill device. If the user additionally activates the switch device of the core drill device during the operation of the device, a mechanical process for removing the drill core from the drill bit can be initiated by the core drill device.

[0025] Further advantages will become apparent from the following description of the figures. The figures, description, and claims include various combinations of features. Those skilled in the art will also consider the features individually and combine them as appropriate to form useful further combinations.

[0026] In the figures, the same and similar components are denoted by the same reference numerals.

Brief Description of the Drawings

[0027]

Figure 1

Modes for Carrying Out the Invention

[0028] Figure 1 shows a possible embodiment of the present invention. In particular, Figure 1 shows a core drill device 1 for cutting out a drill core 5 from a hard substrate such as concrete, stone, or rock. The tool of the core drill device 1 is a drill bit 2, into which the drill core 5 is received during the cutting process. The drill bit 2 and the drill core 5 are schematically shown in the upper left of Figure 1. In the context of the proposed invention, a method for releasing such a drill core 5 from the drill bit 2 of the core drill device 1 is proposed. For this purpose, the core drill device 1 can be vibrated by the user, and in the sense of the present invention, this vibration operation can be recognized as an "intuitive operation" by the core drill device 1. The core drill device 1 can use this intuitive operation as a start signal for a preferably electronic vibration process that can be implemented in the core drill device 1. To recognize the intuitive operation of the core drill device 1, the core drill device 1 can include a sensor system 3 that particularly includes a gyro sensor 3a. Furthermore, the core drill device 1 can include a control device 7 and a motor 6. The motor 6 of the core drill device 1 is particularly set to receive a vibration current that preferably leads to an electronic vibration process of the drill core 5. The core drill device 1 may also have a switch 4, by which the core drill device 1 can be activated or turned on by the user. The sensor 3 may be arranged, for example, spatially close to the electronics of the core drill device 1.

[0029] In the context of the present invention, it is preferred that the core drill device 1 does not require an additional switch to initiate the vibration process. The control device 7 of the core drill device 1 is preferably configured to recognize the intuitive operation of the core drill device 1 and, in response to the recognition of the intuitive operation, preferably automatically start the vibration process. The intuitive operation of the core drill device 1 can in particular be a vibration operation along the Z-axis of the virtual coordinate system shown in the lower region of FIG. 1. In particular, FIG. 1 also shows possible rotational movements around the three spatial axes X, Y and Z, which are carried out by the core drill device 1 and can be recognized as an intuitive operation by the sensor system 3 of the core drill device 3.

[0030] In one exemplary embodiment, the present invention is a method for removing a drill core 5 from a drill bit 2 of a core drill device 1, the method comprising the following method steps, namely, a) providing a core drill device 1 having a drill bit 2, the drill bit 2 containing a drill core 5 from a previously performed core drilling, b) recognizing, by a sensor unit 3, a defined device operation for removing the drill core 5 from the drill bit 5, the defined device operation being performed on the core drill device 1 by a user of the core drill device 1, c) actuating a switch device 4 of the core drill device 1 by the user, d) starting a process for removing the drill core 5 from the drill bit 2 by the core drill device 1, which may be characterized.

[0031] The specified device operation can preferably also be referred to as the intuitive operation of the core drill device 1 in the sense of the present invention. The terms switch device, on-switch, or trigger are used synonymously in the context of the present invention and are indicated by reference numeral 4. The position of the on-switch 4 shown in FIG. 1 is to be understood as an example, and many other positions on the core drill device 1 are conceivable and possible.

[0032] In the sense of the present invention, the vibration process for removing the drill core 5 from the drill bit 2 preferably ends when the operation of the switch device 4 by the user ends. The core drill device 1 preferably has a sensor unit 3 for recognizing the intuitive operation of the core drill device 1, and this intuitive operation can be performed on the core drill device 1 by the user of the core drill device 1. In the sense of the present invention, the sensor unit 3 preferably includes a gyro sensor 3a.

Explanation of Reference Numerals

[0033] 1 Core drill device 2 Drill bit 3 Sensor system 3a Gyro sensor 4 On-switch 5 Drill core 6 Motor of the core drill device 7 Control device of the core drill device

Claims

1. A method for releasing a drill core (5) from a drill bit (2) of a core drill device (1), comprising the steps of: The core drill device (1) is provided with a sensor system for detecting the vibrational movement of the core drill device (1) and is adapted to carry out the following method steps: a) detecting, by the core drill device (1), the vibrational movement of the core drill device (1), the vibrational movement being due to a user's behavior; b) automatically initiating a vibration process of the drill core (5) in response to detection of the vibration movement, The method of claim 1, wherein the vibration process releases the drill core (5) from the drill bit (2).

2. 2. The method according to claim 1, characterized in that between method steps a) and b), the core drilling device (1) is activated by a further operation by a user of the core drilling device (1).

3. 2. The method according to claim 1, characterized in that the vibration process is ended by a second operation by a user of the core drill device (1).

4. 2. The method according to claim 1, characterized in that the vibration process is carried out in the core drill device (1).

5. 2. A method according to claim 1, characterized in that the vibration process is carried out by vibrating the motor (6) of the core drill device (1) by means of an electric current.

6. 2. The method according to claim 1, characterized in that the sensor system (3) comprises at least one gyro sensor (3a).

7. A core drill device (1) for carrying out the method according to any one of claims 1 to 6, comprising: a sensor system (3) for detecting the vibratory movement of said core drill device (1); a control device (7) configured to recognise a vibration movement of the core drill device (1) and to initiate the vibration process in response to said recognition of said vibration movement; A core drill device (1), comprising:

8. 8. Core drill device (1) according to claim 7, characterized in that the sensor system (3) comprises at least one gyro sensor (3a).

9. A core drill device (1) according to claim 7, characterized in that no additional switch is required to activate the vibration process.

10. 8. The core drill device (1) according to claim 7, characterized in that the core drill device (1) comprises a motor (6), the core drill device (1) being configured to oscillate the motor (6) by means of an electric current.

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