TWM634454U - Improved tool holder driving structure of sawing machine - Google Patents

Abstract

This creation is an improvement of the drive structure of the knife seat of a sawing machine. The saw machine is slidably provided with a knife seat, and the knife seat has a saw blade driven by a saw blade motor; a screw motor is arranged on the saw machine, and the screw motor There is a screw, the screw screw sets the knife seat, and an operating device is electrically connected to the saw machine to control the rotation of the screw motor, so that the screw can rotate forward or reverse so that the knife seat can be placed on the saw machine Move so that the saw blade advances for cutting or retreats for shrinkage; through the above-mentioned structure, it can achieve a precise and stable cutting speed to improve the quality of sawing.

Description

Improvement of driving structure of knife seat of sawing machine

This work is about the improvement of the driving structure of the knife seat of a sawing machine, especially a sawing machine that can make the moving speed of the knife seat more stable and automatically adjust the cutting speed.

Generally speaking, when operating the sawing machine, the user needs to adjust the cutting speed of the saw blade according to the material characteristics of the workpiece, and a stable cutting speed can also make the sawing machine have better cutting quality. For example: Generally, workpieces with low hardness can be sawed at a normal feed speed, and workpieces with high hardness must be sawed at a slower feed speed to avoid incomplete sawing and forced cutting. Pushing the saw blade in will result in damage to the saw blade or reduced service life. As shown in Figure 1, it is a known structure of sawing machine 10. This sawing machine 10 is provided with a knife seat 12 slidingly assembled on a slide rail assembly 11. The knife seat 12 has a saw driven by a saw blade motor 13. sheet 14; a telescopic cylinder 15 is arranged on the sawing machine 10, the telescopic cylinder 15 has a pull rod 16, and the pull rod 16 is connected to the knife seat 12 so that the knife seat 12 can move on the slide rail assembly 11, and An operating device 17 is electrically connected to the sawing machine 10 to control the saw blade 14 to advance and cut or retreat and shrink; when using the sawing machine 10 to cut a workpiece, the operating device 17 adjusts the material or characteristics of the workpiece. The telescopic speed of the telescopic cylinder 15 is so as to adjust the feeding speed of the knife seat 12 and the saw blade 14. In other words, the workpiece texture is soft (for example: wood) with a normal feed speed, and the workpiece texture is relatively hard (such as: metal) Then with a slower feed rate; but, the above-mentioned sawing machine 10 can only be applicable to solid workpieces with uniform material and density. quality, inhomogeneous or aluminum extruded... and other workpieces cannot be applied. The operating device 17 cannot change the feed speed along with the cutting position of the saw blade 14. The saw blade 14 cuts at the same feed speed. The sawing operation will be unfavorable to the saw blade 14, and this situation is particularly obvious when sawing large workpieces, which will affect the service life of the saw blade 14. And the sensitivity of the pull rod 16 driven by the telescopic cylinder 15 is difficult to control, and it is easy to produce a sense of frustration when the pull rod 16 is controlled to expand and contract, thereby affecting the cutting quality of the workpiece and easily causing damage to the saw blade 14 . Therefore, the conventional cutting method still needs its improvement.

The purpose of this creation is to solve the above problems, and to provide an improved driving structure of the knife seat of the sawing machine. The main technology and purpose are: the knife seat of the sawing machine is set to be driven by a screw with high precision, thereby achieving precision and Stable cutting speed to improve the quality of sawing operations.

Another technology and purpose of this creation is: the sawing machine is equipped with a saw blade current detector and a screw speed controller. When the material of the workpiece to be sawed changes and the load on the saw blade changes, the saw blade current detector The sensor will detect this change, and the screw speed controller will change the screw speed accordingly, so that the knife seat can change the advancing speed of the knife, so that the sawing speed can be changed in real time to match the material of the workpiece, so as to avoid damage to the saw blade and Extended service life.

According to the above purpose of this creation, an improved driving structure of the knife seat of a sawing machine is provided. The sawing machine is slidably provided with a knife seat, and the knife seat has a saw blade driven by a saw blade motor; a screw motor is arranged on the saw machine Above, the screw motor has a screw, the screw screw sets the knife seat, and an operating device is electrically connected to the saw machine to control the rotation of the screw motor, so that the screw can rotate forward or reverse so that the knife seat can be in the The sawing machine is moved so that the saw blade is advanced for cutting or retracted for contraction.

In one embodiment of the present invention, a knife seat control device is provided in the operating device, and the knife seat control device is electrically connected to the saw blade motor and the screw motor, thereby detecting The load current of the saw motor and control the forward, reverse and rotational speed of the screw motor.

In one embodiment of the present invention, the tool seat control device includes a saw blade current detector and a screw speed controller, the saw blade current detector is electrically connected to the saw blade motor to detect its current change, The screw speed controller is electrically connected to the screw motor to set its forward, reverse and rotational speed.

In this way, a precise and stable cutting speed can be achieved to improve the quality of the sawing operation, and the sawing machine can adjust the moving speed of the knife seat in real time to effectively increase the service life of the saw blade.

1: Workpiece

10: sawing machine

11: Slide rail assembly

12: Knife seat

13: Saw blade motor

14: saw blade

15: telescopic cylinder

16: pull rod

17: Operating device

20: sawing machine

21: Slide rail assembly

22: Knife seat

23: Saw blade motor

24: saw blade

25: screw motor

26: screw

27: Operating device

28: Knife seat control device

281: Saw blade current detector

282: Screw speed controller

30: Flowchart

31~37: Process

Figure 1 is a conventional stereogram;

Figure 2 is a stereogram of this creation;

Figure 3 is a schematic cross-sectional view of the screw rod returning to the knife seat of this invention;

Fig. 4 is a schematic sectional view of the screw propulsion tool holder of this creation;

Figure 5 is the flow chart of screw speed control in this creation.

In order to make your review committee have a better understanding of this creation, hereby cite a preferred embodiment and cooperate with the drawings, detailed as follows:

Please refer to Figures 2 to 5 for an improved driving structure of the knife seat of a sawing machine 20. The saw machine 20 is provided with a knife seat 22 that slides on a slide rail assembly 21. The knife seat 22 has a saw The saw blade 24 driven by the sheet motor 23; a screw motor 25 is arranged on the sawing machine 20, and the screw motor 25 has a screw 26, and the screw 26 is screwed under the knife seat 22, and an operating device 27 Electrically connect the saw machine 20 to control the screw motor 25, so that the screw 26 can rotate forward or reverse, so that the knife seat 22 can move on the slide rail assembly 21, so that the saw blade 24 can be advanced for cutting or retracted contraction; the operating device 27 is provided with a knife seat control device 28, the knife seat control device 28 includes a saw blade current detector 281 and a screw speed controller 282, the saw blade current detector 281 is electrically connected to the The saw blade motor 23 detects its current change, and the screw speed controller 282 is electrically connected to the screw motor 25 to set its speed; through the above structure, a precise and stable cutting speed can be achieved to improve the quality of the sawing operation, and It is possible to change the advancing speed of the cutting saw according to the material of the workpiece 1, so as to avoid damage to the saw blade and prolong the service life.

The composition, function and effect of the above-mentioned embodiment are described in detail as follows: Please refer to the 2nd to 5th figures, the knife seat 22 of the present invention advances or retreats and is driven by the screw rod 26 of forward and reverse rotation, and then drives the saw combined with it Sheet 24 advances or retreats, and when this screw rod 26 rotates one circle, the distance that this knife seat 22 moves axially along this screw rod 26 is equal to the distance of this screw rod 26 pitches, and the pitch of this screw rod 26 is smaller, and this knife seat 22 moves precision The higher the degree and the less frustration, the more stable and precise the movement of the knife seat 22 is, so as to improve the quality of the sawing operation.

Furthermore, when the sawing machine 20 of the present invention cuts parts with higher hardness of the workpiece 1, the rotation of the saw blade 24 is subject to greater resistance, causing the rotor speed of the saw blade motor 23 to slow down and make its load heavier. The speed at which the synchronous rotating magnetic field generated by the stator cuts the rotor winding increases gradually, and the induced potential and current in the rotor winding also gradually increase, so the saw blade motor 23 can be detected by the saw blade current detector 281 The load changes, and the screw speed controller 282 controls the speed of the screw motor 25 according to the load change of the saw blade motor 23 , so as to change the cutting speed according to the material of the workpiece 1 .

Please refer to Figures 2 to 5, the control of the advancing speed of the knife seat 22 of this creation, hereby in detail The details are as follows:

The 5th figure is the flow chart 30 of the screw rod 26 rotational speed control of this creation, when the sawing machine 20 of this creation cuts the workpiece 1, at first the screw rod keeps running at a normal speed (as the process flow 31 of the 5th figure), in other words, the knife rest 22 The cutting workpiece 1 is pushed forward at a normal speed by the rotation of the screw rod 26. At this time, the saw blade current detector 281 of the knife seat control device 28 detects the current change of the saw blade motor 23 to determine whether the saw blade operating current is Exceed the set value (such as process 32 in Figure 5); if the current does not exceed the set value (for example: 6.8 AMP), keep the screw running at normal speed (such as process 31 in Figure 5); if the current exceeds the set value, then Decrease the screw speed (such as the flow process 33 in Fig. 5), and the speed reduction range can be set as a percentage, such as: 10%; Whether the operating current of the chip exceeds the set value (such as the process 34 in Figure 5); if the current exceeds the set value, then the screw speed will be reduced (such as the process 33 in Figure 5), and so on. Do not exceed the set value; if the current does not exceed the set value, then make the screw speed increase (as the flow process 35 of the 5th figure), and its speed increase range can be set as a percentage, such as: 3%; After a set time (for example: 1 second), judge whether the operating current of the saw blade exceeds the set value (such as the process 36 in Figure 5); if the current exceeds the set value, then slow down the screw speed (such as the process in Figure 5 33), and decelerate by analogy until the current does not exceed the set value, and then increase the speed of the screw 26; if the current does not exceed the set value, it is judged whether the screw returns to normal speed operation (such as the flow process 37 in Figure 5 ), that is, to judge whether the knife seat 22 is advancing at a normal speed for cutting; if the screw 26 does not return to the original speed, then the screw is increased in speed (such as the process 35 in Fig. 5) until the screw 26 returns to the original Speed operation; If the screw rod 26 has returned to the original speed operation, then make the screw rod maintain normal speed operation (as the process flow 31 of the 5th figure).

By using the saw blade current detector 281 and the screw speed of the knife seat control device 28 The controller 282 controls the rotating speed of the screw motor 25, so that when the saw blade 24 cuts the workpiece 1, it can change the cutting speed of the knife seat 22 according to the material of the workpiece 1, so as to avoid damage to the saw blade 24 and extend the length of the saw blade 24. service life.

The above descriptions and illustrations are only descriptions of the preferred embodiments of this creation. Those who have common knowledge of this technology can make other modifications according to the scope of the patent application defined below and the above descriptions, but these modifications should still be It is within the scope of rights of this creation for the creative spirit of this creation.

20: sawing machine

21: Slide rail assembly

22: Knife seat

23: Saw blade motor

24: saw blade

25: screw motor

26: screw

27: Operating device

28: Knife seat control device

281: Saw blade current detector

282: Screw speed controller

Claims (3)

An improved driving structure of a knife seat of a sawing machine. The saw machine is slidably provided with a knife seat, and the knife seat has a saw blade driven by a saw blade motor; a screw motor is arranged on the saw machine, and the screw motor has a screw , the screw screw sets the knife seat, and an operating device is electrically connected to the saw machine to control the rotation of the screw motor, so that the screw can rotate forward or reverse so that the knife seat can move on the saw machine, so that Make the saw blade advance to cut or retract to retract. The improvement of the driving structure of the knife seat of the saw machine as described in claim 1, wherein a knife seat control device is provided in the operating device, and the knife seat control device is electrically connected to the saw blade motor and the screw motor, thereby detecting The load current of the saw motor and control the forward, reverse and rotational speed of the screw motor. The improvement of the driving structure of the knife seat of the saw machine as described in claim 2, wherein the knife seat control device includes a saw blade current detector and a screw speed controller, and the saw blade current detector is electrically connected to the saw The chip motor detects its current change, and the screw speed controller is electrically connected to the screw motor to set its forward, reverse and rotational speed.

Images