Automatic correcting, clamping and tool setting device of numerical control milling machine

Abstract

The invention relates to an automatic correcting, clamping and tool setting device of a numerical control milling machine, belongs to the technical field of numerical control clamps, and solves the problems that in the prior art, a clamping device only clamps the two sides of an object, then tool setting is carried out by finding a positioning point, alignment clamping is difficult, tool setting is difficult, and convenient and effective fixing alignment cannot be achieved. The automatic correcting, clamping and tool setting device of the numerical control milling machine comprises an electronic system, a base, a lifting mechanism, a piston rod and a clamping mechanism, the electronic system and the base are connected with the numerical control milling machine, the electronic system and the lifting mechanism are both arranged on the base, and the clamping mechanism is connected with the lifting mechanism through the piston rod. An electronic system of the tool setting device can clamp a workpiece according to a set clamping mode, and a tool setting point can be arranged at an absolute coordinate position of the tool setting device by a machine tool after the workpiece is clamped, so that tool setting is realized; namely, the tool setting work of replacing the workpiece every time can be omitted by one-time tool setting of the clamping device.

Description

Technical Field

[0001] The present invention belongs to the technical field of numerical control fixtures, and in particular relates to an automatic calibration clamping and tool setting device for a numerical control milling machine. Background Art

[0002] During the batch production process using a numerical control milling machine, it is difficult to align and clamp irregular workpieces and to set the tool. If there are deviations in alignment and clamping, not only will the processed products be unqualified, but also the processing efficiency will be greatly affected. Existing clamping devices usually only clamp both sides of an object and then set the tool by finding positioning points again. This method has poor fixing effect and a small application range, and cannot achieve convenient and effective fixing and alignment.

[0003] Therefore, there is an urgent need for an automatic calibration clamping and tool setting device for a numerical control milling machine to solve the problems of difficult alignment and clamping and difficult tool setting in the existing clamping device that only clamps both sides of an object and then sets the tool by finding positioning points again, and cannot achieve convenient and effective fixing and alignment. Summary of the Invention

[0004] In view of the above analysis, the embodiments of the present invention aim to provide an automatic calibration clamping and tool setting device for a numerical control milling machine to solve the problems of difficult alignment and clamping and difficult tool setting in the existing clamping device that only clamps both sides of an object and then sets the tool by finding positioning points again, and cannot achieve convenient and effective fixing and alignment.

[0005] The object of the present invention is mainly achieved through the following technical solutions:

[0006] An automatic calibration clamping and tool setting device for a numerical control milling machine includes an electronic system, a base, a lifting mechanism, a piston rod, and a clamping mechanism. The electronic system and the base are connected to the numerical control milling machine. The electronic system and the lifting mechanism are both arranged on the base. The clamping mechanism is connected to the lifting mechanism through the piston rod.

[0007] Further, the electronic system includes a camera and a memory. The memory is used to store the workpiece shape parameters and the clamping method of the workpiece. The camera is used to photograph the workpiece and identify the workpiece.

[0008] Further, a motor is arranged inside the base, and the lifting mechanism is connected to the motor.

[0009] Further, the lifting mechanism includes a backing plate, a nut, a screw rod, a horizontal worm and worm gear reducer, and a vertical worm and worm gear reducer. The backing plate is installed on the nut. The nut is arranged on the screw rod. The screw rod is connected to the horizontal worm and worm gear reducer.

[0010] Further, the clamping mechanism is arranged on the piston rod, and the electronic system can control the piston rod to realize the movement of the clamping mechanism.

[0011] Further, the clamping mechanism includes a clamping plate and a clamping block.

[0012] Further, the clamping plate includes a first jaw and a second jaw, and the first jaw and the second jaw have the same structure and are symmetric left and right.

[0013] Further, the clamping block is arranged on the end faces of the first jaw and the second jaw.

[0014] Further, the clamping block is a flexible clamping block.

[0015] Further, it further includes a proximity switch. The proximity switch is arranged on the backing plate and is connected to the electronic system. The proximity switch is used to detect the positional relationship between the tool and the workpiece.

[0016] Compared with the prior art, the present invention can at least achieve one of the following beneficial effects:

[0017] (1) The electronic system of the tool setting device of the present invention can clamp the workpiece according to the set clamping method. After clamping, the machine tool can set the tool setting point at the absolute coordinate position of this device to achieve tool setting; that is, tool setting with one clamping device can save the tool setting work for each workpiece replacement.

[0018] (2) The tool setting device of the present invention utilizes the high precision and large load-bearing capacity of the lifting mechanisms of the horizontal worm and worm gear reducer and the vertical worm and worm gear reducer.

[0019] (3) The tool setting device of the present invention has multiple clamping blocks, and the clamping blocks are flexible clamping blocks. The clamping blocks can stretch and can adjust themselves to fit the workpiece according to the shape of the workpiece to achieve the purpose of clamping the workpiece.

[0020] (4) The proximity switch of the tool setting device of the present invention can detect the positional relationship between the tool and the workpiece and feedback the danger signal to the electronic system. The electronic system feeds back to make the control system of the machine tool act and realizes tool braking to ensure the safety of the equipment and personnel.

[0021] In the present invention, the above technical solutions can be combined with each other to achieve more preferred combination schemes. Other features and advantages of the present invention will be described in the following content, and some advantages can be obvious from the description of the specification or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the content specifically pointed out in the text and the drawings. Description of the Drawings

[0022] The drawings are only for the purpose of showing specific embodiments and are not considered as a limitation to the present invention. Throughout the drawings, the same reference signs represent the same components.

[0023] Figure 1It is a schematic diagram of the overall structure of an automatic calibration and clamping tool setting device for a CNC milling machine;

[0024] Figure 2 It is a schematic diagram of the overall structure of the clamping plate.

[0025] Reference numerals: 1 - electronic system; 2 - base; 3 - screw; 4 - nut; 5 - backing plate; 6 - piston rod; 7 - clamping plate; 8 - clamping block; 9 - proximity switch; 71 - first jaw; 72 - second jaw. Detailed implementation manners

[0026] The following will specifically describe the preferred embodiments of the present invention in conjunction with the accompanying drawings. Among them, the accompanying drawings form a part of the present invention and are used together with the embodiments of the present invention to explain the principle of the present invention, rather than to limit the scope of the present invention.

[0027] A specific embodiment of the present invention, as Figure 1 shown, discloses an automatic calibration and clamping tool setting device for a CNC milling machine (hereinafter referred to as the tool setting device), including an electronic system 1, a base 2, a lifting mechanism, a piston rod 6 and a clamping mechanism. The electronic system 1 and the base 2 are connected to the CNC milling machine. The electronic system 1 and the lifting mechanism are both arranged on the base 2. The clamping mechanism is connected to the lifting mechanism through the piston rod 6.

[0028] Preferably, the electronic system 1 includes a camera (not shown in the figure) and a memory (not shown in the figure). The memory can store the workpiece shape parameters and the clamping method of the workpiece. The camera can photograph the workpiece and identify the workpiece. The electronic system 1 can clamp the workpiece according to the set clamping method. After clamping, the machine tool can set the tool setting point at the absolute coordinate position of this device to achieve tool setting. That is, one-time clamping of the device for tool setting can eliminate the tool setting work for each workpiece replacement. The electronic system 1 can be connected to the controller of the machine tool and transmit data.

[0029] Preferably, a motor (not shown in the figure) is arranged in the base 2. The lifting mechanism is connected to the motor. The lifting mechanism includes a backing plate 5, a nut 4, a screw 3, a horizontal worm and worm gear reducer and a vertical worm and worm gear reducer (not shown in the figure). The backing plate 5 is installed on the nut 4. The nut 4 is arranged on the screw 3. The screw 3 is connected to the horizontal worm and worm gear reducer. The electronic system 1 can drive the horizontal worm and worm gear reducer to rotate through the driving motor, and at the same time drive the screw 3 and the nut 4 to rotate. The nut 4 and the backing plate 5 are connected to each other, thereby leveling the workpiece. The motor can also drive the vertical worm and worm gear reducer, and the vertical worm and worm gear reducer is used to rotate the lifting mechanism, which is more convenient for tool setting. The lifting mechanism using the horizontal worm and worm gear reducer and the vertical worm and worm gear reducer has high precision and large load-bearing capacity.

[0030] Preferably, the piston rod 6 is arranged on the backing plate 5. The electronic system 1 can control the piston rod 6 to realize the movement of the clamping mechanism, and the clamping mechanism is arranged on the piston rod 6.

[0031] Preferably, as Figure 2 shown, the clamping mechanism includes a clamping plate 7 and a clamping block 8. The clamping block 8 is arranged on the clamping plate 7. The clamping plate 7 includes a first jaw 71 and a second jaw 72. The first jaw 71 and the second jaw 72 have the same structure and are symmetric left and right. The piston rod 6 is used to drive the first jaw 71 and the second jaw 72 to move towards or away from each other, so as to close or open the clamping plate 7.

[0032] Preferably, the clamping blocks 8 are arranged on the end faces of the first jaw 71 and the second jaw 72. There are multiple clamping blocks 8, and the clamping blocks 8 are flexible clamping blocks. The clamping blocks 8 can expand and contract, and can adjust themselves to fit the workpiece according to the shape of the workpiece, so as to achieve the purpose of clamping the workpiece.

[0033] Preferably, in order to prevent the occurrence of tool collision accidents, the tool setting device of this embodiment further includes a proximity switch 9. The proximity switch 9 is arranged on the backing plate 5 and is connected to the electronic system 1. The proximity switch 9 can detect the positional relationship between the tool and the workpiece. When it is detected that the distance between the tool and the workpiece is within the warning range and the tool is moving rapidly towards the workpiece, it is considered that a tool collision accident is about to occur. At this time, the proximity switch 9 feeds back a signal to the electronic system 1, and the electronic system 1 feeds back to the control system of the machine tool to take action and realizes tool braking to ensure the safety of the equipment and personnel.

[0034] Compared with the prior art, the electronic system 1 of this embodiment can clamp the workpiece according to the set clamping method. After clamping, the machine tool can set the tool setting point at the absolute coordinate position of this device to realize tool setting; that is, tool setting with a single clamping device can save the tool setting work for each workpiece replacement; the lifting mechanism of the transverse worm and worm reducer and the longitudinal worm and worm reducer has high precision and large load-bearing capacity; there are multiple clamping blocks 8, and the clamping blocks 8 are flexible clamping blocks. The clamping blocks 8 can expand and contract, and can adjust themselves to fit the workpiece according to the shape of the workpiece, so as to achieve the purpose of clamping the workpiece; the proximity switch 9 can detect the positional relationship between the tool and the workpiece and feed back a dangerous signal to the electronic system 1, and the electronic system 1 feeds back to the control system of the machine tool to take action and realizes tool braking to ensure the safety of the equipment and personnel.

[0035] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. An automatic calibration and clamping tool setting device for a CNC milling machine, characterized in that, It includes an electronic system (1), a base (2), a lifting mechanism, a piston rod (6) and a clamping mechanism. The electronic system (1), the base (2) are connected to a numerically controlled milling machine. The electronic system (1) and the lifting mechanism are both arranged on the base (2). The clamping mechanism is connected to the lifting mechanism through the piston rod (6).

2. The automatic correction, clamping and tool setting device for a CNC milling machine according to claim 1, wherein, The electronic system (1) includes a camera and a memory. The memory is used to store the workpiece shape parameters and the clamping method of the workpiece. The camera is used to photograph the workpiece and identify the workpiece.

3. The automatic correction and clamping tool setting device for a CNC milling machine according to claim 1, characterized in that, A motor is arranged inside the base (2). The lifting mechanism is connected to the motor.

4. The automatic calibration and clamping tool setting device for a CNC milling machine according to claim 1, wherein The lifting mechanism includes a backing plate (5), a nut (4), a screw rod (3), a horizontal worm and worm gear reducer and a vertical worm and worm gear reducer. The backing plate (5) is installed on the nut (4). The nut (4) is arranged on the screw rod (3). The screw rod (3) is connected to the horizontal worm and worm gear reducer.

5. The automatic calibration and clamping tool setting device for a CNC milling machine according to claim 1, wherein, The clamping mechanism is arranged on the piston rod (6). The electronic system (1) can control the piston rod (6) to realize the movement of the clamping mechanism.

6. The automatic calibration and clamping tool setting device for a CNC milling machine according to claim 1, characterized in that, The clamping mechanism includes a clamping plate (7) and a clamping block (8).

7. The automatic calibration and clamping tool setting device for a CNC milling machine according to claim 6, characterized in that, The clamping plate (7) includes a first jaw (71) and a second jaw (72). The first jaw (71) and the second jaw (72) have the same structure and are symmetric about the left and right.

8. The automatic calibration and clamping tool setting device for a CNC milling machine according to claim 7, wherein The clamping block (8) is arranged on the end faces of the first jaw (71) and the second jaw (72).

9. The automatic calibration clamping and tool setting device for a CNC milling machine according to claim 8, wherein, The clamping block (8) is a flexible clamping block.

10. The automatic correction and clamping tool setting device for a CNC milling machine according to claim 4, characterized in that, It also includes a proximity switch (9). The proximity switch (9) is arranged on the backing plate (5) and is connected to the electronic system (1). The proximity switch (9) is used to detect the positional relationship between the tool and the workpiece.

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