KR200251450Y1 - Drilling apparatus having a pressure detector - Google Patents

Abstract

The present invention relates to a device for drilling holes by using a drill, and more particularly, to control the drilling operation according to the pressure acting in the axial direction of the drill during the drilling operation to prevent breakage of the drill and hole distortion and hole bending. It relates to a perforation device. In particular, even when using a drill having a diameter of 0.5mm or less to drill a small hole there is also an object to be able to drill the hole while preventing breakage of the drill, hole distortion and hole bending.

The cloth factory of this invention

A drill fixing means for fixing the drill;

A drill rotating means for rotating the drill fixed to the drill fixing means;

A pressure detector for detecting an axial force acting on the drill rotated in contact with the workpiece during the drilling operation;

A controller which controls the drill revolving means and the pressure detector and uses the pressure detected by the pressure detector in the control of the component; It is configured to include.

Description

Drilling apparatus having a pressure detector

The present invention relates to a device for drilling holes by using a drill, and more particularly, to control the drilling operation according to the pressure acting on the axial direction of the drill during the drilling operation to prevent breakage of the drill, hole distortion and hole bending. It relates to a perforation device.

In the industrial field, various kinds of punching devices are used for drilling holes in materials. Among these drilling apparatuses, the most common drilling apparatus is to drill holes by rotating a drill.

In this way, the fabric mill using the drill is classified into manual and automatic according to the method of applying force to the drill.

Manual type is the method of using the worker's power when pushing the drill rotated by the drill fixing means to the material to be drilled (hereinafter referred to as 'workpiece'), automatic type is to push the rotary drill fixed to the drill fixing means to the workpiece It is a way of using mechanical force.

Therefore, the manual drilling machine cannot keep the force pushing the drill to the workpiece uniformly, and the strength of the drill cannot be taken into account, while the automatic drilling machine can keep the drill pushing force to the workpiece constant, It was not considered.

As described above, since the drill is pushed into the workpiece by a force that does not take into account the strength of the drill, the perforated hole is not straight and bent, and the cross section of the hole is crushed.

That is, the drill pushed the workpiece into the workpiece compared to the strength of the drill was excessive, the hole was not straightened, the cross section of the hole was crushed into an oval shape, and in some cases the drill was broken.

In particular, the drill having a diameter of 0.5mm or less is very thin, so it bends and breaks very well even with a weak force, and thus it is impossible to drill using a manual punching machine.

On the other hand, if the force for pushing the drill into the workpiece is too weak, the drilling takes too long.

In addition, in the case where the force for pushing the drill into the workpiece cannot be kept constant, the perforated hole is not smooth.

On the other hand, when the drill is broken in the process of drilling holes in the workpiece, because the material of the drill is strong, a serious problem of throwing away the workpiece due to the failure to pull out the drill embedded in the workpiece was also generated.

The present invention is intended to solve the above problems, more specifically, to control the force to push the drill into the workpiece in accordance with the strength of the drill to prevent the bending of the perforated hole and the cross-sectional distortion and the drill breakage The purpose is to provide a fabric mill with a drill.

In addition, when the drill is pushed into the workpiece, there is also a purpose to push the drill with an appropriate force so that the drilling work can be finished quickly, and the force is kept constant so that the hole is smoothly drilled.

1 is a schematic diagram of the drilling device of the present invention, the drill movement means is composed of a movement means at idle and a movement means during drilling and the movement of the drill fixing means is controlled by a controller

Figure 2 is a schematic diagram for explaining in detail the moving means at idle in Figure 1

Figure 3 is a schematic diagram for explaining in detail the movement means when drilling in FIG.

4 is a schematic view of a state in which the technical spirit of the present invention is applied to a manual hand drilling machine

Figure 5 is a schematic diagram for explaining the installation state of the pressure detector as a component of the present invention

6 is a block diagram for explaining an example when a controller which is a component of the present invention controls the drilling operation to be automated;

<Description of the code | symbol about the principal part of drawing>

10. Drill 20. Drill fixing means

30. Drill rotation means 40. Workpiece

50. Pressure Detector 60. Controller

70. Display device 80. Sound output device

90. Drill moving means 91. First sensing part

92. Second detector 93. Third detector

94. Fourth detection unit 100. Movement means during drilling

110. Movement means during idling 111. Moving table

112. Guide rails 113, 120. Cylinder shaft

114. Pneumatic cylinder 115. 116. Oil inlet and outlet

117.Flow control valve 118.Piston

119. Oil flow hole 121. Hole opening and closing device

122. Hydraulic cylinders 123, 124, 125. Hanging plates

126. Length extension shaft

Referring to the present invention in more detail by the drawings as follows.

However, the accompanying drawings are only examples to illustrate the present invention, and thus the technical spirit of the present invention is not limited to the accompanying drawings.

The cloth factory of this invention

A drill fixing means 20 for fixing the drill 10;

A drill rotating means (30) for rotating the drill (10) fixed to the drill fixing means (20);

A pressure detector 50 for detecting an axial force acting on the drill 10 which is rotated in contact with the workpiece 40 during the drilling operation;

A controller 60 that controls the drill rotation means 30 and the pressure detector 50 and uses the pressure detected by the pressure detector 50 in the control of the components; It may be configured to include.

Drill fixing means 20 is a component of the present invention will be able to use a variety of methods, such as drill fixing means used in a conventional drilling device using a drill.

Drill rotation means 30, which is a component of the present invention, may also use various methods such as drill rotation means used in a drilling apparatus using a conventional drill.

The pressure detector 50, which is a component of the present invention, may detect pressure acting in the axial direction of the drill, and may use various types of pressure detectors currently on the market.

For example, a DANA LOAD CELL (manufacturer name: DANA, model name: CMM K001, CAP: 1kgf) may be used.

In order to detect the force acting in the axial direction of the drill 10 by using the pressure detector 50, when installing a commercial pressure detector 50, it is necessary to install the pressure detector 50 so as to be suitable for the pressure detection method of the corresponding pressure detector 50. It is important.

The pressure detector 50, such as DANA LOAD CELL (manufacturer name: DANA, model name: CMM K001, CAP: 1 kgf), detects the pressure acting on the object based on the force pressed by the object.

Therefore, when installing the pressure detector 50 such as DANA LOAD CELL (manufacturer: DANA, model name: CMM K001, CAP: 1kgf), the drill must be pushed in the axial direction so that the pressure detector 50 can be pressed.

More specifically, as shown in FIG. 4 or FIG. 5, the drill fixing means 20 is moved in the axial direction of the drill 10 by an axial force acting on the drill 10, and the pressure detector 50. The drill fixing means 20 may be installed at the rear of the drill fixing means 20 to detect the axial force acting on the drill 10 based on the force moved in the axial direction of the drill 10. That is, the drill fixing means 20 is pushed in the direction of the pressure detector 50 by the axial force acting on the drill 10 so that the drill fixing means 20 presses the pressure detector 50 to the pressing force. Based on this, pressure acting in the axial direction of the drill 10 is detected.

The controller 60, which is a component of the present invention, controls various components including the drill rotation means 30 and the pressure detector 50 and controls the various components according to the pressure detected by the pressure detector 50, as described above. It is. Therefore, in the manual punching machine, it will be a simple configuration including a switch like the controller used in the conventional manual punching machine. In the automatic punching machine, it is possible to include a program or a circuit like the controller used in the conventional automatic punching machine that automatically controls various components. Will be constructed. The controller configured to include the program as described above will correspond to the CPU as in the conventional controller.

Referring to the example in which the controller 60 which is a component of the present invention controls various components in accordance with the pressure detected by the pressure detector 50 is as follows.

In addition, a display device 70 capable of displaying the pressure detected by the pressure detector 50 is installed in the drilling device of the present invention, and the controller 60 displays the pressure detected from the pressure detector 50 in the display device ( There will be a case of outputting through 70).

Such a configuration is such that when the pressure detected by the pressure detector 50 is output through the display device 70, a worker using a perforator can work while checking the pressure output through the display device 70. . That is, when the pressure in the axial direction acting on the drill 10 exceeds a predetermined pressure, the operator checks this to weaken the force pushing the drill 10 toward the workpiece or to stop the system.

In another example, a sound output device 80 capable of outputting sound may be additionally installed in the punching device of the present invention, and the controller 60 may exceed the set pressure of the pressure detected from the pressure detector 50. If there is a case that the beeping sound is generated through the sound output device 80.

Such a configuration is such that the operator using the fabric mill can weaken the force pushing the drill 10 toward the workpiece or stop the system when a warning sound is generated through the sound output device 80.

In addition, when the pressure detected by the pressure detector 50 exceeds the set pressure, the controller 60 operates the drill rotating means 30 to reversely rotate the drill fixing means 20 to fix the drill fixing means 20. There will be a case where the drill 10 is reversed.

Such a configuration is intended to prevent the drill 10 from being broken by minimizing the torque acting on the drill 10 by preventing drilling when the axial pressure acting on the drill 10 exceeds the set pressure. It is.

In addition, when the pressure detected by the pressure detector 50 exceeds the set pressure, the controller 60 may cause the drill 10 to be separated from the workpiece by moving the drill fixing means 20 back. will be.

This configuration is such that when the axial pressure acting on the drill 10 exceeds the set pressure, the drill 10 is released from the work piece 40 so that the drill 10 does not receive pressure and torque in the axial direction. It is intended to prevent the drill 10 from breaking, as well as to prevent the hole from being bent or the end surface of the hole being crushed.

The technical idea as described above may also be applied to a drilling apparatus in which the drill moving means 90 is installed to move the drill fixing means 20 in the direction of the workpiece 40 so that the drilling operation is automated. In this case, the control means 60 controls the movement of the drill moving means 90.

According to such a configuration, even when drilling is performed with a drill having a diameter of 0.5 mm or less, the drill is prevented from breaking and the hole is smoothly processed, thereby improving work efficiency.

The drill movement means 90 as described above may use the same as the conventional drill movement means of the automatic drilling device, as shown in Figure 1 to move the drill fixed to the drill fixing means 20 until just before contacting the workpiece 40 A moving means 110 when idle;

Drilling means for moving the drill fixing means 20 to move the drill fixing means 20 from the position where the drill 10 fixed to the drill fixing means 20 to reach the position where the drilling operation can be finished until just before the workpiece 40 100;

A first sensing unit 91 which detects that the fixed drill 10 has been moved until it reaches the workpiece 40 by using a sensor or a limit switch, and the like;

A second detector 92 which detects that the fixed drill 10 has exited the workpiece by using a sensor or a limit switch or the like;

A third sensing unit 93 for detecting that the fixed drill 10 enters the workpiece 40 by a set depth using a sensor or a limit switch;

A fourth detector 94 for detecting that the drill 10 is moved to the first set position by using a sensor or a limit switch or the like; It can also be configured to include.

When configured as described above, the controller 60 stops the moving means 110 at idle and moves the drilling means 100 during drilling when the fixed drill 10 is moved to just before the workpiece 40 is touched. 10) is advanced so that the drilling operation is made, but if the pressure detected by the pressure detector 50 exceeds the set pressure, the drilling means stops the movement means 100 and operates the movement means 110 at idle drill fixing means. The drill 10 is separated from the workpiece by moving the drill 20 to the rear of the drill 10, and when the drill 10 detects that the drill 10 is separated from the workpiece 40 by the above process, the drill 10 is detached. After advancing back to the position before it is separated, by operating the movement means 100 when drilling can be made to make the punching work again so that the punching work can be automated. By repeating the above process, an appropriate pressure is applied without excessive pressure in the axial direction of the drill 10, thereby preventing breakage of the drill 10 and crushing of the drilled hole and bending of the drilled hole. You can make a hole with.

6 is a block diagram for explaining the operation of the controller as described above.

As described above, when the drill moving means 90 is composed of the idle movement movement means 110 and the drilling movement movement means 100, the idle movement movement means 110 may use various means of movement, but it is shown in FIGS. As shown in Figure 2

A moving table 111 to which the drill fixing means 20 is fixed;

A guide rail 112 for guiding the movement of the movement table 111;

A front side of the cylinder shaft 113 is connected to the moving table 111 to push the moving table 111 so that the drill fixing means 20 moves together with the moving table 111;

The oil inlet outlet 115 located at the front and the oil inlet outlet 116 located at the rear are connected to a pipe through which the oil can flow and a flow control valve 117 to control the flow rate of the oil, and the oil flow to the piston 118. A hole 119 is formed, and the oil flow hole 119 is blocked when the cylinder shaft 120 is moved forward, and the oil flow hole 119 is opened by the oil pressure when the cylinder shaft 120 is reversed. The hole opening and closing device 121 is installed, and the front of the cylinder shaft 120 is connected to the moving table 111, but the cylinder shaft 113 of the pneumatic cylinder 114 is advanced to the drill fixing means 20. A hydraulic cylinder 122 connected so that the cylinder shaft 120 does not move until the distance between the fixed drill 10 and the work 40 is shortened to a set length (usually, about 3 to 10 cm); It can also be configured to include.

In the above, the hydraulic cylinder 122 may be replaced with a modified pneumatic cylinder, such as the hydraulic cylinder 122.

In addition, before the cylinder shaft 113 of the pneumatic cylinder 114 is advanced and the distance between the drill 10 fixed to the drill fixing means 20 and the work piece 40 is shortened to a set length, the hydraulic cylinder 122 As a method of preventing the cylinder shaft 120 from moving, various methods may be used.

For example, in order to extend the cylinder shaft 120 of the hydraulic cylinder 122, the length extension shaft 126 is connected to the front of the cylinder shaft 120 of the hydraulic cylinder 122, the length of the moving table 111 The extension shaft 126 forms a movable locking plate 123 and the locking plates 124 and 125 are formed in front and rear of the extension shaft 126 to move the movable table 111 when the movable table 111 moves. There will be a way to make the engaging plate 123 of the engaging plate 124, 125 of the longitudinal extension shaft 126.

Referring to the operation of the idle moving means 110 configured as described above is as follows.

When the air is introduced into the air inlet outlet located in the rear of the pneumatic cylinder 114 from the control unit 60 is commanded to advance the drill fixing means 20, the cylinder shaft 113 of the pneumatic cylinder 114 is advanced to the drill fixing means Advances the movable table 111 to which 20 is fixed. At this time, before the cylinder shaft 113 of the pneumatic cylinder 114 is advanced to a predetermined position and the locking plate 123 formed on the moving table 111 is caught by the locking plate 124 formed in front of the length extension shaft 126, Since the cylinder 122 is not affected by the pneumatic cylinder 114, the cylinder shaft 120 of the hydraulic cylinder 122 does not advance. However, the cylinder shaft 113 of the pneumatic cylinder 114 has a predetermined position (this is a value to be set. In this case, the drill 10 and the workpiece fixed to the drill fixing means 20 attached to the moving table 111 are fixed. The distance between the ends 40 is preferably 3 to 10 cm), and the locking plate 123 formed on the movable table 111 is caught by the locking plate 124 formed in front of the length extension shaft 126. Advancement of the cylinder shaft 113 of the pneumatic cylinder 114 also affects the cylinder shaft 120 of the hydraulic cylinder 122. Therefore, the cylinder shaft 120 of the hydraulic cylinder 122 is also advanced. The oil filled in front of the piston 118 of the hydraulic cylinder 122 is rearward through the oil inlet outlet 115 located at the front of the hydraulic cylinder 122. It is sent to the rear of the piston 118 via the oil inlet outlet 116 located. However, if the flow control valve 117 provided in the hydraulic cylinder 122 is opened a little, the oil is sent a small amount to the rear so that the cylinder shaft 120 of the hydraulic cylinder 122 is gradually advanced, which is a moving table 111 ) Results in a slow movement, so that the movement means 110 at idle runs slowly when the distance between the drill 19 fixed to the movement table 111 and the work piece 40 is close.

On the contrary, when compressed air is injected into the air inlet and outlet located in front of the pneumatic cylinder 114 by the reverse of the drill fixing means 20, the cylinder shaft 113 of the pneumatic cylinder 114 is reversed. At this time, before the cylinder shaft 113 of the pneumatic cylinder 114 is retracted to a predetermined position and the locking plate 123 formed on the moving table 111 is caught by the locking plate 125 formed at the rear of the length extension shaft 126, Since the cylinder 122 is not affected by the pneumatic cylinder 114, the cylinder shaft 120 of the hydraulic cylinder 122 does not retract. However, when the cylinder shaft 113 of the pneumatic cylinder 114 is reversed and the locking plate 122 formed on the moving table 111 is caught by the locking plate 125 formed at the rear of the length extension shaft 126, the pneumatic cylinder 114 Reversal of the cylinder shaft 113 of) also affects the cylinder shaft 120 of the hydraulic cylinder 122. Therefore, the cylinder shaft 120 of the hydraulic cylinder 122 is also reversed. The oil filled in the rear of the piston 118 of the hydraulic cylinder 122 is hydraulic cylinder through the oil inlet outlet 116 located at the rear of the hydraulic cylinder 122. The oil flow is pushed through the oil opening / closing device 121 through the oil flow hole 119 formed in the piston 118 via the oil inlet outlet 115 located at the front of the piston 118. It flows to the front of the hydraulic cylinder 122, opening and closing the hole 119. As soon as the cylinder shaft 120 of the hydraulic cylinder 122 retreats at a high speed, it can be quickly retracted when the drill fixing means 10 moves backward.

On the other hand, if the movement speed of the drill 10 is too fast during the drilling operation, the pressure acting in the axial direction of the drill 10 is too large and the drill 10 is easily bent or broken, and the movement speed of the drill 10 is too slow. The time required for drilling is too long.

Therefore, the drilling speed is very important during the drilling work. In the case of drilling a relatively small hole, the drill should be advanced about 5 ~ 10mm per minute.

In particular, when the diameter of the drill 10 is 0.5mm or less, it is preferable to move about 5mm per minute.

Therefore, when the drill moving means 90 is composed of a moving means 110 and idle movement means 100 when idle as described above, the idle movement movement means 110 to quickly move the drill fixing means 20, When the drilling means moving means 100 is preferably to move the drill fixing means 20 slowly.

Referring to an example of the drill moving means 90 for gradually moving the drill fixing means 20, as shown in FIGS. 1 and 3, a ball screw moved about 3 to 7 mm at a time of one rotation to the rotating shaft of the reducer having a diameter of about 0.5 to 3 rpm. When the ball screw is rotated by the rotational force of the reducer, the drill fixing means 20 is moved, but when the reducer rotates once, the drill fixing means 20 is configured to be moved about 3 to 7 mm. Can also be applied to the movement means 100 during drilling.

In addition, when the drill is used to drill holes, it is preferable that the drill repeats forward and backward at predetermined time intervals to increase the discharge efficiency of chips generated during drilling and to prevent the drill from overheating. Therefore, in the device of the present invention, even if the pressure detected in the pressure detector 50 during the drilling operation does not exceed the set pressure, it is preferable that the drill fixing means 20 repeats forward and backward at predetermined intervals.

According to the present invention, the force that pushes the drill into the workpiece according to the strength of the drill can be controlled to properly maintain the force acting in the axial direction of the drill, thereby preventing bending of the drilled hole, crushing of the cross section and breaking of the drill. can do.

In particular, even when working with a drill of 0.5mm or less in diameter, holes are drilled smoothly, work efficiency is improved, and breakage of the drill is prevented, so that expensive drills can be safely used for a long time.

In addition, when the drill is pushed into the workpiece, it is pushed with an appropriate force, so that the drilling work is finished quickly, and the force is kept constant, so that the hole is smoothly drilled.

Claims (10)

In the drilling device using a drill, A drill fixing means for fixing the drill; A drill rotating means for rotating the drill fixed to the drill fixing means; A pressure detector for detecting an axial force acting on the drill rotated in contact with the workpiece during the drilling operation; A controller for controlling the drill rotating means and the pressure detector and using the pressure detected by the pressure detector to control the components; Perforation device provided with a pressure detector configured to include. The method of claim 1, The drill fixing means may be moved in the axial direction of the drill by an axial force acting on the drill, The pressure detector is provided with a pressure detector, characterized in that installed in the rear of the drill fixing means to detect the axial force acting on the drill based on the force that the drill fixing means is moved in the axial direction of the drill. Drilling device. The method according to claim 1 or 2, A display device that can display the pressure detected by the pressure detector is further installed, And the controller outputs the pressure detected from the pressure detector through the display device. The method according to claim 1 or 2, There is an additional sound output device that can output sound, And the controller generates a warning sound through the sound output device when the pressure detected from the pressure detector exceeds a set pressure. The method according to claim 1 or 2, The controller is equipped with a pressure detector, characterized in that for rotating the drill in reverse rotation when the pressure detected by the pressure detector exceeds a set pressure. The method according to claim 1 or 2, And the controller is configured to release the drill from the workpiece when the detected pressure exceeds the set pressure. The method according to claim 1 or 2, It is provided with a drill moving means for moving the drill fixing means in the workpiece direction, The control means, the drilling device provided with a pressure detector, characterized in that for controlling the movement of the drill movement means. The method of claim 7, wherein The drill moving means, Idle movement means for moving the drill fixed to the drill fixing means until it immediately touches the workpiece; Drilling means for moving the drill from the position where the drill is moved until it touches the workpiece to a position where the drilling operation can be finished; A first sensing unit for sensing that the drill is moved until just before touching the workpiece; A second detector for detecting that the drill exits from the workpiece; A third detector for detecting that the drill enters the workpiece by a set depth; A fourth detector for detecting that the drill is moved to the first set position; It contains, The control means, When the drill is moved until just before the workpiece touches the workpiece, the moving means at the idle stops and the moving means at the time of drilling is operated so that the drill is advanced to perform the drilling operation, but the pressure detected by the pressure detector exceeds the set pressure. In this case, when the drilling means stops the movement means and the idle movement means moves away from the workpiece, and if it detects that the drill is separated from the workpiece, the drill advances to the position before the separation and then moves during the drilling. Drilling device with a pressure detector, characterized in that for controlling the drilling to be carried out again by operating the means. The method of claim 8, When the drilling means moves, the drill fixing means is moved by the rotational force of the reducer of about 0.5 to 3 rpm, but when the reducer rotates once, the drill fixing means is moved to about 3 to 7 mm. Device. The method of claim 8, The public exhibition moving means, A moving table to which the drill fixing means is fixed; A guide rail for guiding movement of the moving table; A pneumatic cylinder having a front end of the cylinder shaft connected to the moving table to push the moving table; The oil inlet outlet located at the front and the oil inlet outlet located at the rear are connected by a pipe through which oil can flow and a flow control valve that regulates the flow rate of the oil, and an oil flow hole is formed in the piston. A hole opening and closing device is provided to block the oil flow hole and to open the oil flow hole when the cylinder shaft is retracted. The length extension shaft is connected to the front of the cylinder shaft, and the length extension shaft is connected to the moving table. The movable table is provided with a locking plate for moving the longitudinal extension shaft, and a locking plate for engaging the locking plate formed on the movable table is formed at the front and rear of the longitudinal extension shaft so that the movable table is moved even if the cylinder shaft of the pneumatic cylinder is advanced. Before the formed locking plate is caught by the locking plate formed on the length extension shaft The hydraulic cylinder is designed so that the cylinder shaft does not move; Drilling device provided with a pressure detector, characterized in that consisting of.