CN115533202A

CN115533202A - Sawing quality and cutter life prediction system

Info

Publication number: CN115533202A
Application number: CN202211523144.6A
Authority: CN
Inventors: 李博; 于铭洋; 高瑞清; 洪亮; 张勃洋; 张清东
Original assignee: Hangzhou Jigang Tools Co ltd; University of Science and Technology Beijing USTB; Research Institute of Wood Industry of Chinese Academy of Forestry
Current assignee: Hangzhou Jigang Tools Co ltd; University of Science and Technology Beijing USTB; Research Institute of Wood Industry of Chinese Academy of Forestry
Priority date: 2022-12-01
Filing date: 2022-12-01
Publication date: 2022-12-30
Anticipated expiration: 2042-12-01
Also published as: CN115533202B

Abstract

The invention discloses a sawing quality and cutter life prediction system which comprises a first bottom plate, wherein one side of the top surface of the first bottom plate is fixedly connected with a first driving mechanism, the top of the first driving mechanism is fixedly connected with a three-axis dynamometer, a cut sample is arranged at the top of the three-axis dynamometer, one side of the bottom plate, which is far away from the first driving mechanism, is fixedly connected with a second bottom plate, the top surface of the second bottom plate is provided with a three-axis moving mechanism, the top of the three-axis moving mechanism is fixedly connected with a motor base, the top surface of the motor base is fixedly connected with a sawing mechanism, the sawing mechanism comprises a third motor fixedly connected with the motor base, an output shaft of the third motor is fixedly connected with a saw blade, the saw blade is matched with the cut sample, and two sides of the motor base are respectively and fixedly connected with a heating element and a measuring element. The method can evaluate the section quality of the product in the sawing process, and predict the service life and continuous working capacity of the cutter.

Description

Sawing quality and cutter life prediction system

Technical Field

The invention relates to the technical field of cutting tools, in particular to a sawing quality and tool life prediction system.

Background

The circular saw blade is used as a most widely applied working tool in the sawing production, and the surface quality of a cut product, the service life of the saw blade and the continuous working time are the keys for determining the kerf loss and the sawing working efficiency. The quality of the cut product is mainly reflected by the roughness of the cut surface, and the online detection of the roughness of the cut surface is difficult in the sawing working process, so that the sawing process parameters cannot be adjusted in time. The roughness of the cut surface is directly formed after the cutter breaks the material, so the dynamic stability of the cutter directly determines the roughness of the cut surface. The dynamic stability of the cutter is determined by the physical characteristics of the cutter, the sawing process parameters and the substrate temperature of the cutter. The physical characteristics of the cutter are determined when the product is delivered from a factory, the sawing process parameters can be adjusted in real time during the use process of the cutter, and the temperature of a substrate of the cutter is continuously accumulated along with the sawing.

In the sawing process, the roughness of the section of the product cannot be detected on line, the roughness of the section can be detected only after one batch of processing is finished, and a large amount of secondary products can be generated if the processing technological parameters are not appropriate. Therefore, the quality of the section of the product needs to be predicted in real time in the sawing process, and the optimal process parameters are selected for synchronous adjustment, so that a large number of secondary products are avoided.

Along with saw bit geometry, heat treatment process, the variety of coating process, the intrinsic characteristic of every kind of saw bit all has different differences, saw bit manufacturing enterprise though can provide the critical rotational speed of partial typical model saw bit, but the saw bit is in normal atmospheric temperature state this moment, and at the actual in-process of sawing, the saw bit base member can form the temperature gradient of big-end-up inside little, this kind of temperature field can reduce the critical rotational speed of saw bit, the saw bit can reach critical rotational speed more easily under the actual operating condition promptly, serious vibration can appear to the saw bit this moment, greatly reduced saw bit life-span and saw cut product quality. It is necessary to find a critical rotation speed of the saw blade body at different temperatures in order to limit the sawing efficiency properly.

The cutter is replaced according to the experience of a field user when loud noise, severe vibration or other obvious appearance damage occurs in the sawing process. However, many saw blade failures are not observed in time, which results in sudden damage of the saw blade during the sawing process, which can stop the production cycle suddenly, resulting in a lot of material waste, and even more in damage to the sawing equipment and injury to the operator. Therefore, the service life of the saw blade needs to be predicted according to the production rhythm, and the saw blade reaching the service life limit needs to be replaced in advance.

Therefore, a new system for predicting the sawing quality and tool life is needed to solve the above problems.

Disclosure of Invention

The invention aims to provide a sawing quality and cutter life prediction system to solve the problems in the prior art.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a sawing quality and cutter life prediction system which comprises a first bottom plate, wherein a first driving mechanism is fixedly connected to one side of the top surface of the first bottom plate, a three-axis dynamometer is fixedly connected to the top of the first driving mechanism, a cut sample is arranged on the top of the three-axis dynamometer, a second bottom plate is fixedly connected to one side, away from the first driving mechanism, of the bottom plate, a three-axis moving mechanism is arranged on the top surface of the second bottom plate, a motor base is fixedly connected to the top of the three-axis moving mechanism, a sawing mechanism is fixedly connected to the top surface of the motor base and comprises a third motor fixedly connected with the motor base, a saw blade is fixedly connected to an output shaft of the third motor, the saw blade is matched with the cut sample, and heating elements and measuring elements are fixedly connected to two sides of the motor base respectively.

Preferably, the triaxial dynamometer with be equipped with anchor clamps between the sample of being cut, anchor clamps include with the top surface four corners of triaxial dynamometer rigid coupling respectively has first bolt, threaded connection has two first nuts on the first bolt, two the rigid coupling has between the first nut the sample is cut.

Preferably, the three-axis moving mechanism comprises a first moving part fixedly connected to the top surface of the second bottom plate, the top surface of the first moving part is slidably connected to a second moving part, the top surface of the second moving part is slidably connected to a third moving part, and the top surface of the third moving part is fixedly connected to the motor base.

Preferably, the first movable part comprises two first connecting plates, one of the first connecting plates is fixedly connected with the second bottom plate, the second bottom plate is fixedly connected with one side of the top surface of the first connecting plate, symmetrically and fixedly connected with a first mounting seat and two first mounting seats are rotatably connected with two first connecting rods through first connecting shafts, the centers of the first connecting rods are connected with two second connecting rods and the other side of the first connecting plates through second connecting shafts, the two ends of the second connecting rods are symmetrically and fixedly connected with the first mounting seats and the other side of the second connecting rods through the first connecting shafts and the other side of the first mounting seats on the first connecting plates in a rotating mode, the other ends of the first connecting rods and the other ends of the second connecting rods are respectively and slidably connected with limiting assemblies, the limiting assemblies are respectively and fixedly connected with the opposite inner sides of the first connecting plates, and one of the limiting assemblies is connected with a first driving part in a transmission mode.

Preferably, the limiting assembly comprises two second mounting seats fixedly connected with the first connecting plate, and two limiting plates are fixedly connected to the top surfaces of the second mounting seats, first sliders are slidably connected between the limiting plates, one of the first sliders is rotatably connected to the first connecting rods, and the other of the first sliders is rotatably connected to the second connecting rods.

Preferably, the first driving portion includes a first lead screw slidably connected to the first slider, and the first lead screw penetrates through the second mounting seat far away from the first mounting seat and is fixedly connected to a first motor.

Preferably, be located at the head rod top the top surface rigid coupling of first connecting plate has the second removes the portion, the second removes the portion including the symmetry rigid coupling and is in the first spacing seat of first connecting plate top surface, two the rigid coupling has first spacing axle between the first spacing seat, sliding connection has two sliding seats on the first spacing axle, two the top surface rigid coupling of sliding seat has the second connecting plate, the top surface rigid coupling of second connecting plate has the third removes the portion, the inherent second driving piece in bottom surface one side of second connecting plate is close to the second connecting plate the top surface rigid coupling of first connecting plate has the connecting seat, the second driving piece with the connecting seat transmission is connected.

Preferably, the second driving part comprises a bearing seat fixedly connected with the second connecting plate, a second lead screw is rotatably connected in the bearing seat, a second motor is fixedly connected to the outer side of the bearing seat, and the second motor is in transmission connection with the second lead screw.

Preferably, the third moving portion has the same structure as the second moving portion, and the second lead screw of the third moving portion and the second lead screw of the second moving portion are perpendicular to each other.

Preferably, the heating member is a laser heater, the laser heater is fixedly connected with the motor base, the measuring member is a laser displacement sensor, and the laser displacement sensor is fixedly connected with the motor base.

The invention discloses the following technical effects: the high-temperature cutter idling speed-changing experiment device has the advantages that a cut sample is pushed to be cut through the first driving mechanism to be cut, the three-axis dynamometer is used for measuring the cutting force during cutting, the heating element is used for applying different temperature fields to the cutter in the high-temperature cutter idling speed-changing experiment, and the measuring element is used for measuring the transverse vibration amplitude of a saw blade in real time; the determination of the continuous working capacity of the cutter in the sawing mechanism can avoid that the single processing time exceeds the maximum continuous working capacity of the saw blade to cause the saw blade to be scrapped in advance; and the prediction of the service life can replace the saw blade in advance, thereby preventing the saw blade from being damaged in the working process and causing the waste of products.

The invention can realize the monitoring of the triaxial sawing force and the transverse vibration of the cutter under a specific sawing process parameter, thereby predicting the section quality of a product. And the long-term sawing process is simulated by applying a temperature load on the idle cutter, and the transverse vibration amplitude of the cutter in the gradual speed-up process is monitored and recorded to find the critical rotating speed, so that the service life of the cutter is predicted. The invention aims to evaluate the section quality of a product in a sawing process and predict the service life and continuous working capacity of a cutter.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of a sawing quality and tool life prediction system according to the present invention;

FIG. 2 is a schematic structural diagram of a three-axis moving mechanism;

FIG. 3 is a left side view of the three-axis movement mechanism;

FIG. 4 is a simplified flow diagram of the present invention;

wherein, 1, the first bottom plate; 2. a three-axis dynamometer; 3. cutting a sample; 4. a second base plate; 5. a motor base; 6. a heating element; 7. a measuring member; 8. a clamp; 81. a first bolt; 82. a first nut; 9. a first connecting plate; 10. a first mounting seat; 11. a first connecting shaft; 12. a first connecting rod; 13. a second connecting shaft; 14. a second connecting rod; 15. a second mounting seat; 16. a limiting plate; 17. a first slider; 18. a first lead screw; 19. a first motor; 20. a first limiting seat; 21. a first limit shaft; 22. a sliding seat; 23. a second connecting plate; 24. a connecting seat; 25. a bearing seat; 26. a second lead screw; 27. a second motor; 28. a third motor; 29. a saw blade; 30. a fourth motor; 31. a linear synchronous belt module; 32. a second bolt; 33. a second nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Referring to fig. 1-4, the invention provides a sawing quality and tool life prediction system, which comprises a first bottom plate 1, wherein a first driving mechanism is fixedly connected to one side of the top surface of the first bottom plate 1, a three-axis dynamometer 2 is fixedly connected to the top of the first driving mechanism, a cut sample 3 is arranged on the top of the three-axis dynamometer 2, a second bottom plate 4 is fixedly connected to one side of the bottom plate far away from the first driving mechanism, a three-axis moving mechanism is arranged on the top surface of the second bottom plate 4, a motor base 5 is fixedly connected to the top of the three-axis moving mechanism, a sawing mechanism is fixedly connected to the top surface of the motor base 5, the sawing mechanism comprises a third motor 28 fixedly connected to the motor base 5, a saw blade 29 is fixedly connected to an output shaft of the third motor 28, the saw blade 29 is matched with the cut sample 3, and heating elements 6 and measuring elements 7 are fixedly connected to two sides of the motor base 5 respectively.

The test piece cutting device has the advantages that a cut test piece 3 is pushed to be cut through the first driving mechanism, the three-axis dynamometer 2 is used for measuring the cutting force during cutting, the heating element 6 is used for applying different temperature fields to the cutter in the idling speed change experiment of the high-temperature cutter, and the measuring element 7 is used for measuring the transverse vibration amplitude of the saw blade 29 in real time; the determination of the continuous working capacity of the cutter in the sawing mechanism can avoid the situation that the cutter is scrapped in advance because the single processing time exceeds the maximum continuous working capacity of the saw blade 29; and the prediction of the service life can replace the saw blade 29 in advance, thereby preventing the saw blade 29 from being damaged in the working process and causing the waste of products.

According to a further optimized scheme, the first driving mechanism comprises a fourth motor 30, the fourth motor 30 is in transmission connection with a linear synchronous belt module 31, the linear synchronous belt module 31 is fixedly connected with the first base plate 1, and different feeding speeds are achieved by adjusting the rotating speed of the fourth motor 30.

Further optimize the scheme, be equipped with anchor clamps 8 between triaxial dynamometer 2 and the sample 3 of being cut, anchor clamps 8 include with the top surface four corners of triaxial dynamometer 2 rigid coupling respectively have first bolt 81, threaded connection has two first nuts 82 on first bolt 81, the rigid coupling has the sample 3 of being cut between two first nuts 82.

One side of the first bottom plate 1, which is far away from the linear synchronous belt module 31, is fixedly connected with four second bolts 32 at equal intervals in the circumferential direction, the second bolts 32 are connected with two second nuts 33 in an internal thread manner, and a second bottom plate 4 is fixedly connected between the two second nuts 33. Used for adjusting the height of the three-axis moving mechanism and the sawing mechanism.

According to a further optimized scheme, the three-axis moving mechanism comprises a first moving portion fixedly connected to the top surface of the second bottom plate 4, the top surface of the first moving portion is connected with a second moving portion in a sliding mode, the top surface of the second moving portion is connected with a third moving portion in a sliding mode, and the top surface of the third moving portion is fixedly connected with a motor base 5.

Movement of the saw blade 29 in three directions, x, y and z, is achieved by providing a three-axis movement mechanism.

According to a further optimization scheme, the first moving portion comprises two first connecting plates 9, one of the first connecting plates 9 is fixedly connected with the second base plate 4, first mounting seats 10 are symmetrically and fixedly connected to one side of the top surface of the first connecting plate 9 fixedly connected with the second base plate 4, the two first mounting seats 10 are rotatably connected with two first connecting rods 12 through first connecting shafts 11, the centers of the two first connecting rods 12 are connected with two second connecting rods 14 through second connecting shafts 13, the bottom surface of the other first connecting plate 9 is symmetrically and fixedly connected with the first mounting seats 10, one ends of the two second connecting rods 14 are rotatably connected with the first mounting seat 10 on the other first connecting plate 9 through the first connecting shafts 11, the other ends of the first connecting rods 12 and the other ends of the second connecting rods 14 are respectively and slidably connected with limiting assemblies, the limiting assemblies are respectively and fixedly connected with the opposite inner sides of the two first connecting plates 9, and a first driving portion is in one of the limiting assemblies in a transmission mode.

Further optimize the scheme, spacing subassembly includes two second mount pads 15 with first connecting plate 9 rigid coupling, and the top surface rigid coupling of two second mount pads 15 has limiting plate 16, and sliding connection has first slider 17 between limiting plate 16 and the first connecting plate 9, and the both ends of one of them first slider 17 rotate with head rod 12 and are connected, and the both ends of another first slider 17 rotate with second connecting rod 14 and are connected, and one of them first slider 17 transmission is connected with first drive division.

In a further optimized scheme, the first driving part comprises a first lead screw 18 connected with the first sliding block 17 in a sliding mode, and the first lead screw 18 penetrates through a second mounting seat 15 far away from the first mounting seat 10 and is fixedly connected with a first motor 19.

When the first motor 19 is started, the output shaft of the first motor 19 drives the first lead screw 18 to rotate, the first lead screw 18 drives the first slider 17 connected with the first lead screw in a sliding manner to slide, so that the first slider 17 drives the included angle between the first connecting rod 12 and the second connecting rod 14 to change, and simultaneously drives the second moving part, the third moving part and the saw blade 29 to ascend or descend.

Further optimize the scheme, the top surface rigid coupling of the first connecting plate 9 that is located the top of first connecting rod 12 has the second to remove the portion, the second removes the portion including the first spacing seat 20 of symmetry rigid coupling at first connecting plate 9 top surface, the rigid coupling has first spacing axle 21 between two first spacing seats 20, sliding connection has two sliding seats 22 on the first spacing axle 21, the top surface rigid coupling of two sliding seats 22 has second connecting plate 23, the top surface rigid coupling of second connecting plate 23 has third removal portion, the inherent second driving piece in bottom surface one side of second connecting plate 23, the top surface rigid coupling of first connecting plate 9 that is close to second connecting plate 23 has connecting seat 24, the second driving piece is connected with connecting seat 24 transmission.

Further optimize the scheme, the second driving piece includes the bearing frame 25 with second connecting plate 23 rigid coupling, and the internal rotation of bearing frame 25 is connected with second lead screw 26, and the outside rigid coupling of bearing frame 25 has second motor 27, and second motor 27 is connected with second lead screw 26 transmission.

The second motor 27 is started, the output shaft of the second motor 27 drives the second lead screw 26 to rotate, the second lead screw 26 drives the bearing block 25 and the second motor 27 to move, the second connecting plate 23 is driven to slide, and the connecting seat 24 at the bottom of the second connecting plate 23 drives the sliding seat 22 to slide along the first limiting shaft 21.

In a further optimized scheme, the structure of the third moving part is the same as that of the second moving part, and the second lead screw 26 of the third moving part is perpendicular to the second lead screw 26 of the second moving part.

The working distance of the third moving part is the same as that of the second moving part, so that the second moving part and the third moving part drive the saw blade 29 to move in the horizontal and vertical directions, respectively.

According to the further optimization scheme, the heating element 6 is a laser heater, the laser heater is fixedly connected with the motor base 5, the measuring element 7 is a laser displacement sensor, and the laser displacement sensor is fixedly connected with the motor base 5.

In practical application, three process parameters are used for sawing the same material, wherein the three process parameters are lower limit/middle/upper limit, and the lower limit is the processing process with the lowest requirement on equipment, namely the lowest feeding speed and the highest sawing rotating speed; the intermediate process is a conventional process, and the sawing rotation speed and the feeding speed are moderate; the upper limit is the highest process technology required by the equipment, i.e. the highest feeding speed and the lowest sawing speed. The three-axis dynamometer 2 and the laser displacement sensor are used for recording the sawing force in the sawing process and the transverse displacement of the saw blade 29, and the data of the sawing force and the transverse displacement are combined to predict the roughness of the section of the workpiece after the material is sawn by using the process. After the roughness of the tangent plane of the workpiece under three typical process parameters of lower limit/middle/upper limit is possessed, the roughness of the workpiece under any processing parameter in the process range can be estimated. And then changing the material of the cut workpiece, and repeating the above steps to establish a multi-material multi-process section roughness database.

Subsequently, the cutter is not sawed, only idling is carried out, and meanwhile, the edge of the saw blade 29 is heated by the laser heater, so that the saw blade 29 forms a temperature gradient with a large outside and a small inside, and the temperature gradient is different by changing the power of the laser heater. The power of the laser heater is mapped according to the roughness of the cutting surface predicted by sawing, namely, the larger the roughness, the larger the heat generation quantity is, and the larger the power used by the laser heater is. With the increase of the idle running time of the saw blade 29, the temperature of the saw blade 29 is higher and higher, the critical rotating speed of the saw blade 29 is gradually reduced, and the time is set as the maximum continuous working time of the saw blade 29 when the critical rotating speed of the saw blade 29 is reduced to the current rotating speed of the saw blade 29 at a certain moment and the saw blade 29 has unstable vibration, which is the time when the saw blade 29 of the model can not continuously work for more than the time when a certain material is sawed under the existing technological parameters in the actual sawing working process, and the saw blade 29 needs to be stopped and cooled in time to prevent the saw blade 29 from being unstable.

Finally, according to a specific production rhythm provided by an enterprise site (the production rhythm refers to that a certain material is sawed for a certain time by a certain process parameter, then the machine is stopped, the material is replaced, and next sawing is carried out, the process is called as the production rhythm), a multi-material multi-process section roughness database is imported, the service life of a cutter is calculated, and the production site is reminded to replace the saw blade 29 in time.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A sawing quality and cutter life prediction system is characterized in that: including first bottom plate (1), top surface one side rigid coupling of first bottom plate (1) has first actuating mechanism, first actuating mechanism's top rigid coupling has triaxial dynamometer (2), the top of triaxial dynamometer (2) is equipped with and is cut sample (3), the bottom plate is kept away from one side rigid coupling of first actuating mechanism has second bottom plate (4), the top surface of second bottom plate (4) is equipped with triaxial moving mechanism, triaxial moving mechanism's top rigid coupling has motor cabinet (5), the top surface rigid coupling of motor cabinet (5) has saw cutting mechanism, saw cutting mechanism include with third motor (28) of motor cabinet (5) rigid coupling, the output shaft rigid coupling of third motor (28) has saw bit (29), saw bit (29) with be cut sample (3) looks adaptation, the both sides difference rigid coupling of motor cabinet (5) have heating member (6) and measuring piece (7).

2. The sawing quality and tool life prediction system of claim 1 wherein: triaxial dynamometer (2) with be equipped with anchor clamps (8) between being cut sample (3), anchor clamps (8) include with the top surface four corners of triaxial dynamometer (2) rigid coupling respectively has first bolt (81), threaded connection has two first nuts (82) on first bolt (81), two the rigid coupling has between first nut (82) be cut sample (3).

3. The sawing quality and tool life prediction system of claim 1 wherein: the triaxial moving mechanism comprises a first moving part fixedly connected with the top surface of the second base plate (4), the top surface of the first moving part is connected with a second moving part in a sliding manner, the top surface of the second moving part is connected with a third moving part in a sliding manner, and the top surface of the third moving part is fixedly connected with the motor base (5).

4. The sawing quality and tool life prediction system of claim 3 wherein: the first moving portion comprises two first connecting plates (9), one of the first connecting plates (9) is fixedly connected with a second base plate (4) and is fixedly connected with the second base plate (4) through a first connecting shaft (11), two first connecting rods (12) are rotatably connected with the center of each first connecting rod (12) through a second connecting shaft (13), two second connecting rods (14) are rotatably connected with the center of one top surface of each first connecting plate (9), the other bottom surface of each first connecting plate (9) is symmetrically fixedly connected with the first mounting seat (10) and the other end of each second connecting rod (14) through the first connecting shaft (11) and the other end of each first connecting rod (9) is rotatably connected with the first mounting seat (10), the other end of each first connecting rod (12) and the other end of each second connecting rod (14) are respectively slidably connected with limiting assemblies, and the limiting assemblies are respectively connected with the inner sides of the first connecting plates (9) and the inner sides of one of the limiting assemblies, and are fixedly connected with a first limiting assembly driving portion.

5. The sawing quality and tool life prediction system of claim 4, wherein: spacing subassembly include with two second mount pads (15), two of first connecting plate (9) rigid coupling the top surface rigid coupling of second mount pad (15) has limiting plate (16), limiting plate (16) with sliding connection has first slider (17) between first connecting plate (9), one of them the both ends of first slider (17) with first connecting rod (12) rotate to be connected, another the both ends of first slider (17) with second connecting rod (14) rotate to be connected, one of them first slider (17) transmission is connected with first drive division.

6. The sawing quality and tool life prediction system of claim 5 wherein: the first driving part comprises a first lead screw (18) which is connected with the first sliding block (17) in a sliding mode, and the first lead screw (18) penetrates through the second mounting seat (15) far away from the first mounting seat (10) and is fixedly connected with a first motor (19).

7. The sawing quality and tool life prediction system of claim 6 wherein: be located at head rod (12) top the top surface rigid coupling of first connecting plate (9) has second removal portion, second removal portion is including the symmetry rigid coupling first spacing seat (20), two of first connecting plate (9) top surface between first spacing seat (20) the rigid coupling has first spacing axle (21), sliding connection has two sliding seat (22) on first spacing axle (21), two the top surface rigid coupling of sliding seat (22) has second connecting plate (23), the top surface rigid coupling of second connecting plate (23) has third removal portion, the inherent second driving piece in bottom surface one side of second connecting plate (23) is close to second connecting plate (23) the top surface rigid coupling of first connecting plate (9) has connecting seat (24), the second driving piece with connecting seat (24) transmission is connected.

8. The sawing quality and tool life prediction system of claim 7 wherein: the second driving piece comprises a bearing seat (25) fixedly connected with a second connecting plate (23), a second lead screw (26) is connected to the bearing seat (25) in a rotating mode, a second motor (27) is fixedly connected to the outer side of the bearing seat (25), and the second motor (27) is in transmission connection with the second lead screw (26).

9. The sawing quality and tool life prediction system of claim 8, wherein: the third moving part has the same structure as the second moving part, and the second lead screw (26) of the third moving part and the second lead screw (26) of the second moving part are perpendicular to each other.

10. The sawing quality and tool life prediction system of claim 1 wherein: the heating member (6) is a laser heater, the laser heater is fixedly connected with the motor base (5), the measuring member (7) is a laser displacement sensor, and the laser displacement sensor is fixedly connected with the motor base (5).