Sawing device and sawing control method

Abstract

The present application relates to a sawing device and a sawing control method, which calculates the equivalent bending distance of the middle part of the saw blade during the sawing process through the arm spacing between the first guide arm and the second guide arm and the bending displacement of the middle part of the saw blade collected in real time by a displacement collection device during the sawing process, and then controls the hydraulic damping adjustment component and the hydraulic clamping adjustment component in real time through the equivalent bending distance of the middle part of the saw blade and the preset equivalent bending distance range, thereby adjusting the magnitude of the friction force applied to the surface of the saw blade by the damping component and the magnitude of the clamping force applied to the surface of the saw blade by the clamping component in real time, so that the equivalent bending distance of the middle part of the saw blade is maintained within the preset equivalent bending distance range during the sawing process, which can greatly reduce the situation where the middle part of the saw blade has a relatively large upward bending deformation or a relatively large downward bending deformation, can effectively improve the sawing accuracy and sawing efficiency of the workpiece, and can effectively improve the service life of the saw blade.

Description

Technical Field

[0001] The present application belongs to the technical field of sawing equipment, and in particular relates to a sawing device and a sawing control method. Background Art

[0002] High-efficiency, high-precision, and low-cost processing technology is an inevitable trend in the development of modern mechanical processing. Band saw blade cutting is widely used in the field of metal raw material cutting due to its advantages of high cutting efficiency, material and energy saving, and cost control.

[0003] Existing band saw blade cutting devices typically employ clamping components fixed beneath two guide arms. These components are hydraulically controlled to apply a clamping force to the surfaces of the blade's ends, clamping the blade. During workpiece cutting, the high-speed blade, guided by the clamping components, cuts the material through the kerf. During this process, the guiding and controlling action of the clamping components ensures the required cross-sectional accuracy. As a relatively flexible band-shaped tool, a band saw blade experiences greater deformation than other metal cutting tools during cutting. Throughout its service life, a band saw blade often encounters workpieces of varying sizes and materials. During continuous cutting, the cutting force increases as the teeth wear. These complex and variable operating conditions can easily cause the blade to experience significant upward or downward bending deformation during operation. This can alter the blade's originally designed service parameters (such as rake angle, clearance angle, and tooth spacing), significantly reducing cutting accuracy and efficiency, and ultimately shortening the blade's service life. Summary of the Invention

[0004] The purpose of this application is to provide a sawing device and a sawing control method; the sawing device and sawing control method provided in this application can greatly reduce the occurrence of relatively large upward bending deformation or relatively large downward bending deformation in the middle part of the saw blade, can effectively improve the sawing accuracy and sawing efficiency of the workpiece, and can effectively improve the service life of the saw blade.

[0005] The technical solutions provided in this application are as follows:

[0006] A sawing device includes a guide component, a clamping assembly, a damping assembly, a hydraulic damping adjustment assembly, a hydraulic clamping adjustment assembly, a displacement acquisition device and a controller;

[0007] The guide component includes a first guide arm and a second guide arm, wherein a first end of the first guide arm and a first end of the second guide arm are fixedly connected, the first guide arm is arranged at a first end of the saw blade, and the second guide arm is arranged at a second end of the saw blade;

[0008] The damping assembly is fixedly connected to the second end of the first guide arm and the second end of the second guide arm, the oil circuit of the damping assembly is connected to the hydraulic damping adjustment assembly, and the damping assembly is in contact with the surface of the saw blade;

[0009] The clamping assembly is fixedly connected to the second end of the first guide arm and the second end of the second guide arm, the oil circuit of the clamping assembly is connected to the hydraulic clamping adjustment assembly, and the clamping assembly is used to clamp the saw blade;

[0010] The controller is electrically connected to the displacement acquisition device, the hydraulic damping adjustment component and the hydraulic clamping adjustment component;

[0011] The displacement acquisition device is used to acquire the bending displacement of the middle portion of the saw blade during the sawing process;

[0012] The controller is used to obtain the equivalent bending distance of the middle part of the saw blade during the sawing process based on the arm spacing between the first guide arm and the second guide arm and the bending displacement, and control the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly based on the equivalent bending distance and the preset equivalent bending distance range to adjust the forces applied by the damping assembly and the clamping assembly to the surface of the saw blade respectively.

[0013] Optionally, the damping assembly includes a first damping component, a second damping component, a third damping component and a fourth damping component, and the hydraulic damping adjustment assembly includes a first hydraulic damping adjustment component, a second hydraulic damping adjustment component, a third hydraulic damping adjustment component and a fourth hydraulic damping adjustment component;

[0014] The first damping component is fixedly connected to the second end of the first guide arm, the oil circuit of the first damping component is connected to the first hydraulic damping adjustment component, and the first damping component is in contact with the surface of the saw blade and close to the back edge of the first end of the saw blade;

[0015] The second damping component is fixedly connected to the second end of the first guide arm, the oil circuit of the second damping component is connected to the second hydraulic damping adjustment component, and the second damping component is in contact with the surface of the saw blade and close to the serrated edge of the first end of the saw blade;

[0016] The third damping component is fixedly connected to the second end of the second guide arm, the oil circuit of the third damping component is connected to the third hydraulic damping adjustment component, and the third damping component is in contact with the surface of the saw blade and close to the back edge of the second end of the saw blade;

[0017] The fourth damping component is fixedly connected to the second end of the second guide arm, the oil circuit of the fourth damping component is connected to the fourth hydraulic damping adjustment component, and the fourth damping component is in contact with the surface of the saw blade and is close to the serrated edge of the second end of the saw blade;

[0018] The controller is electrically connected to the first hydraulic damping adjustment component, the second hydraulic damping adjustment component, the third hydraulic damping adjustment component, and the fourth hydraulic damping adjustment component, respectively.

[0019] Optionally, the clamping assembly includes a first clamping component and a second clamping component, and the hydraulic clamping adjustment assembly includes a first hydraulic clamping adjustment component and a second hydraulic clamping adjustment component;

[0020] The first clamping component is fixedly connected to the second end of the first guide arm, and the oil circuit of the first clamping component is connected to the first hydraulic clamping adjustment component;

[0021] The second clamping component is fixedly connected to the second end of the second guide arm, and the oil circuit of the second clamping component is connected to the second hydraulic clamping adjustment component;

[0022] The controller is electrically connected to the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component.

[0023] Optionally, the preset equivalent bending moment range is from a first preset equivalent bending moment value to a second preset equivalent bending moment value, and when the controller controls the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly according to the equivalent bending moment and the preset equivalent bending moment range to adjust the forces respectively applied by the damping assembly and the clamping assembly to the surface of the saw blade, the controller is specifically configured to:

[0024] When the equivalent bending moment is less than the first preset equivalent bending moment value, controlling the first hydraulic damping adjustment component, the third hydraulic damping adjustment component, the first hydraulic clamping adjustment component, and the second hydraulic clamping adjustment component to adjust the forces respectively applied to the surface of the saw blade by the first damping component, the third damping component, the first clamping component, and the second clamping component;

[0025] When the equivalent bending moment is greater than the second preset equivalent bending moment value, the second hydraulic damping adjustment component, the fourth hydraulic damping adjustment component, the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component are controlled to adjust the forces applied to the surface of the saw blade by the second damping component, the fourth damping component, the first clamping component and the second clamping component respectively.

[0026] Optionally, the first hydraulic damping adjustment component includes a first electromagnetic proportional reversing valve, a first oil inlet solenoid valve and a first oil return solenoid valve, and the first damping component includes a first friction block, a first compression spring, a first connecting plate and a first oil cylinder;

[0027] The first end of the first friction block contacts the surface of the saw blade and is close to the back edge of the first end of the saw blade;

[0028] The second end of the first friction block is provided with a first groove, and the first compression spring and the first connecting plate are provided in the first groove;

[0029] The first end of the first compression spring is fixedly connected to the bottom of the first groove;

[0030] The second end of the first compression spring is fixedly connected to the first side of the first connecting plate;

[0031] The second side of the first connecting plate is fixedly connected to the piston rod of the first oil cylinder;

[0032] The cylinder barrel of the first oil cylinder is fixedly connected to the second end of the first guide arm;

[0033] The rodless chamber of the first oil cylinder is connected to the oil port A of the first electromagnetic proportional reversing valve, and the rod chamber of the first oil cylinder is connected to the oil port B of the first electromagnetic proportional reversing valve;

[0034] The P oil port of the first electromagnetic proportional reversing valve is connected to the oil outlet of the first oil inlet solenoid valve;

[0035] The T oil port of the first electromagnetic proportional reversing valve is connected to the oil inlet of the first oil return solenoid valve;

[0036] The controller is electrically connected to the first electromagnetic proportional reversing valve, the first oil inlet electromagnetic valve, and the first oil return electromagnetic valve respectively.

[0037] Optionally, it further includes: a pressure gauge;

[0038] The pressure gauge is arranged on the pipeline between the rodless chamber of the first oil cylinder and the oil port A of the first electromagnetic proportional reversing valve, and is used to measure and display the oil pressure in the pipeline between the rodless chamber of the first oil cylinder and the oil port A of the first electromagnetic proportional reversing valve.

[0039] Optionally, the guide component further includes a connecting member;

[0040] The first end of the first guide arm is fixedly connected to the first end of the connecting member;

[0041] The first end of the second guide arm is fixedly connected to the second end of the connecting member;

[0042] The displacement acquisition device is arranged in the middle of the connecting member.

[0043] Optionally, it further includes: a distance measuring sensor;

[0044] The distance measuring sensor is arranged on the first guide arm or the second guide arm;

[0045] The distance measuring sensor is electrically connected to the controller, and is used to collect the arm distance between the first guide arm and the second guide arm, and send the collected arm distance to the controller.

[0046] The present application also provides a sawing control method, which is applied to the sawing device described above, and the method includes:

[0047] obtaining an arm distance between the first guide arm and the second guide arm;

[0048] Acquiring the bending displacement of the middle portion of the saw blade during the sawing process collected by the displacement collection device;

[0049] Obtaining an equivalent bending moment of the middle portion of the saw blade during sawing according to the arm spacing and the bending displacement;

[0050] According to the equivalent bending moment and a preset equivalent bending moment range, the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly are controlled to adjust the forces applied by the damping assembly and the clamping assembly to the surface of the saw blade respectively.

[0051] Optionally, applied to the sawing device described above, the preset equivalent bending moment range is from a first preset equivalent bending moment value to a second preset equivalent bending moment value, and controlling the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly according to the equivalent bending moment and the preset equivalent bending moment range to adjust the forces applied by the damping assembly and the clamping assembly to the surface of the saw blade, respectively, includes:

[0052] When the equivalent bending moment is less than the first preset equivalent bending moment value, controlling the first hydraulic damping adjustment component, the third hydraulic damping adjustment component, the first hydraulic clamping adjustment component, and the second hydraulic clamping adjustment component to adjust the forces applied to the surface of the saw blade by the first damping component, the third damping component, the first clamping component, and the second clamping component, respectively;

[0053] When the equivalent bending moment is greater than the second preset equivalent bending moment value, the second hydraulic damping adjustment component, the fourth hydraulic damping adjustment component, the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component are controlled to adjust the forces applied to the surface of the saw blade by the second damping component, the fourth damping component, the first clamping component and the second clamping component respectively.

[0054] Compared with the prior art, the sawing device provided by the present application includes a guide component, a clamping assembly, a damping assembly, a hydraulic damping adjustment assembly, a hydraulic clamping adjustment assembly, a displacement acquisition device and a controller; the guide component includes a first guide arm and a second guide arm, the first end of the first guide arm and the first end of the second guide arm are fixedly connected, the first guide arm is arranged at the first end of the saw blade, and the second guide arm is arranged at the second end of the saw blade; the damping assembly is fixedly connected to the second end of the first guide arm and the second end of the second guide arm, the oil circuit of the damping assembly is connected to the hydraulic damping adjustment assembly, and the damping assembly contacts the surface of the saw blade; the clamping assembly is fixedly connected to the second end of the first guide arm and the second end of the second guide arm, the oil circuit of the clamping assembly is connected to the hydraulic clamping adjustment assembly, and the clamping assembly is used to clamp the saw blade; the controller is electrically connected to the displacement acquisition device, the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly; the displacement acquisition device is used to acquire the bending displacement of the middle part of the saw blade during the sawing process; the controller is used to obtain the bending displacement of the middle part of the saw blade according to the arm spacing and bending displacement between the first guide arm and the second guide arm. The equivalent bending distance of the middle part of the saw blade during the sawing process is calculated, and the hydraulic damping adjustment component and the hydraulic clamping adjustment component are controlled according to the equivalent bending distance and the preset equivalent bending distance range to adjust the forces applied by the damping component and the clamping component to the surface of the saw blade respectively. In the present application, the equivalent bending distance of the middle part of the saw blade during the sawing process is calculated by the arm spacing between the first guide arm and the second guide arm and the bending displacement of the middle part of the saw blade collected in real time by the displacement collection device during the sawing process. Then, the hydraulic damping adjustment component and the hydraulic clamping adjustment component are controlled in real time according to the equivalent bending distance of the middle part of the saw blade and the preset equivalent bending distance range, thereby adjusting the magnitude of the friction force applied by the damping component to the surface of the saw blade and the magnitude of the clamping force applied by the clamping component to the surface of the saw blade in real time, so that the equivalent bending distance of the middle part of the saw blade during the sawing process is maintained within the preset equivalent bending distance range, which can greatly reduce the occurrence of relatively large upward bending deformation or relatively large downward bending deformation in the middle part of the saw blade, effectively improve the sawing accuracy and sawing efficiency of the workpiece, and effectively increase the service life of the saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0056] Figure 1 This is a schematic structural diagram of a sawing device provided in an embodiment of the present application;

[0057] Figure 2This is a connection diagram of the controller, displacement acquisition device, hydraulic damping adjustment component, and hydraulic clamping adjustment component provided in the embodiments of the present application;

[0058] Figure 3 A schematic diagram of the connection between the subcomponents in the damping assembly and the hydraulic damping adjustment assembly, and the subcomponents in the clamping assembly and the hydraulic clamping adjustment assembly provided in an embodiment of the present application;

[0059] Figure 4 This is a schematic structural diagram of another sawing device provided in an embodiment of the present application;

[0060] Figure 5 A block diagram showing the connections between the controller, displacement acquisition device, distance sensor, sub-components in the hydraulic damping adjustment assembly, and sub-components in the hydraulic clamping adjustment assembly provided in the embodiments of the present application;

[0061] Figure 6 This is a schematic diagram of the connection between the first damping component and the saw blade provided in an embodiment of the present application;

[0062] Figure 7 This is a schematic diagram of the connection between the first clamping component, the first guide arm and the saw blade provided in an embodiment of the present application;

[0063] Figure 8 This is a flow chart of a sawing control method provided in an embodiment of the present application;

[0064] Reference numerals: 100 - guide component; 200 - damping assembly; 300 - hydraulic damping adjustment assembly; 400 - clamping assembly; 500 - hydraulic clamping adjustment assembly; 600 - displacement acquisition device; 700 - controller; 800 - saw blade; 910 - pressure gauge; 920 - distance sensor; 930 - oil tank; 940 - hydraulic motor;

[0065] 110-first guide arm; 120-second guide arm; 130-connecting member;

[0066] 210 - first damping component; 220 - second damping component; 230 - third damping component; 240 - fourth damping component;

[0067] 211 - first oil cylinder; 212 - first friction block; 213 - first compression spring; 214 - first connecting plate; 215 - first groove;

[0068] 221 - second oil cylinder; 231 - third oil cylinder; 241 - fourth oil cylinder; 224 - second connecting plate; 234 - third connecting plate; 244 - fourth connecting plate;

[0069] 310 - first hydraulic damping adjustment component; 320 - second hydraulic damping adjustment component; 330 - third hydraulic damping adjustment component; 340 - fourth hydraulic damping adjustment component;

[0070] 311-first electromagnetic proportional reversing valve; 312-first oil inlet electromagnetic valve; 313-first oil return electromagnetic valve;

[0071] 321-second electromagnetic proportional reversing valve; 322-second oil inlet solenoid valve; 323-second oil return solenoid valve;

[0072] 331-third electromagnetic proportional reversing valve; 332-third oil inlet solenoid valve; 333-third oil return solenoid valve;

[0073] 341-fourth electromagnetic proportional reversing valve; 342-fourth oil inlet solenoid valve; 343-fourth oil return solenoid valve;

[0074] 410-first clamping member; 420-second clamping member;

[0075] 411 - fifth oil cylinder; 412 - first clamping block; 413 - second groove; 414 - pre-guide wheel; 421 - sixth oil cylinder; 422 - second clamping block;

[0076] 510-first hydraulic clamping and adjusting component; 520-second hydraulic clamping and adjusting component;

[0077] 511-fifth electromagnetic proportional reversing valve; 512-fifth oil inlet solenoid valve; 513-fifth oil return solenoid valve; 521-sixth electromagnetic proportional reversing valve; 522-sixth oil inlet solenoid valve; 523-sixth oil return solenoid valve. DETAILED DESCRIPTION

[0078] In order to help those skilled in the art better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0079] It should be noted that when an element is referred to as being “fixed on” or “set on” another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being “connected to” another element, it can be directly connected to the other element or indirectly connected to the other element.

[0080] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0082] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0083] like Figures 1 to 3As shown, the embodiment of the present application provides a sawing device, including a guide component 100, a damping assembly 200, a hydraulic damping adjustment assembly 300, a clamping assembly 400, a hydraulic clamping adjustment assembly 500, a displacement acquisition device 600 and a controller 700; the guide component 100 includes a first guide arm 110 and a second guide arm 120, the first end of the first guide arm 110 and the first end of the second guide arm 120 are fixedly connected, the first guide arm 110 is arranged at the first end of the saw blade 800, and the second guide arm 120 is arranged at the second end of the saw blade 800; the damping assembly 200 is fixedly connected to the second end of the first guide arm 110 and the second end of the second guide arm 120, the oil circuit of the damping assembly 200 is connected to the hydraulic damping adjustment assembly 300, and the damping assembly 200 is in contact with the surface of the saw blade 800; the clamping assembly 400 is fixedly connected to the first guide arm 11 0 is fixedly connected to the second end of the second guide arm 120, the oil circuit of the clamping assembly 400 is connected to the hydraulic clamping adjustment assembly 500, and the clamping assembly 400 is used to clamp the saw blade 800; the controller 700 is electrically connected to the displacement acquisition device 600, the hydraulic damping adjustment assembly 300 and the hydraulic clamping adjustment assembly 500; the displacement acquisition device 600 is used to collect the bending displacement of the middle part of the saw blade 800 during the sawing process; the controller 700 is used to obtain the equivalent bending moment of the middle part of the saw blade 800 during the sawing process according to the arm spacing and bending displacement between the first guide arm 110 and the second guide arm 120, and control the hydraulic damping adjustment assembly 300 and the hydraulic clamping adjustment assembly 500 according to the equivalent bending moment and the preset equivalent bending moment range, so as to adjust the force applied to the surface of the saw blade 800 by the damping assembly 200 and the clamping assembly 400 respectively.

[0084] In this embodiment, the working method of the sawing device can be: first, an electrical signal can be sent to the hydraulic clamping adjustment component 500 through the controller 700, so that the hydraulic clamping adjustment component 500 hydraulically controls the clamping component 400 to clamp the two ends of the saw blade 800, and then controls the first guide arm 110 and the second guide arm 120 to move left and right at the same time, so that the clamping component 400 fixedly connected to the second end of the first guide arm 110 and the second end of the second guide arm 120 respectively drives the saw blade 800 to saw the workpiece through the clamping force applied to the surfaces of the two ends of the saw blade 800, and the displacement acquisition device 600 collects the bending of the middle part of the saw blade 800 in the sawing process in real time. The controller 700 calculates the equivalent bending moment of the middle part of the saw blade 800 during the sawing process according to the arm spacing between the first guide arm 110 and the second guide arm 120 and the received bending displacement, and then controls the hydraulic damping adjustment component 300 and the hydraulic clamping adjustment component 500 according to the equivalent bending moment and the preset equivalent bending moment range, thereby adjusting the friction force applied to the surface of the saw blade 800 by the damping component 200 and the clamping force applied to the surface of the saw blade 800 by the clamping component 400 in real time, so that the equivalent bending moment of the middle part of the saw blade 800 during the sawing process is maintained within the preset equivalent bending moment range.

[0085] In this embodiment, the sawing device may be a sawing machine, and the arm spacing between the first guide arm 110 and the second guide arm 120 may be acquired by a distance measuring sensor provided on the first guide arm 110 or the second guide arm 120, or may be pre-set in the controller 700; during the sawing process, the bending deformation of the back side of the saw blade 800 is called an equivalent bending distance, and the preset equivalent bending distance range is a preset equivalent bending distance range, which may be -1.8 mm to 1.8 mm; the equivalent bending distance of the middle portion of the saw blade 800 during the sawing process may be calculated based on the arm spacing and bending displacement between the first guide arm 110 and the second guide arm 120 and the equivalent bending distance calculation formula, and the equivalent bending distance calculation formula is specifically as follows:

[0086]

[0087]

[0088] Among them, r is the equivalent radius of the back bending of the saw blade 800, s is the arm distance between the first guide arm 110 and the second guide arm 120, h is the bending displacement, and B is the equivalent bending distance (i.e., the bending deformation of the back side of the saw blade 800).

[0089] In this embodiment, in order to prevent the force applied to the surface of the saw blade 800 by the damping assembly 200 and the clamping assembly 400 from exceeding the safe range of the tensile strength of the saw blade 800 and accelerating the fatigue failure of the saw blade 800, the controller 700 can control the hydraulic damping adjustment assembly 300 and the hydraulic clamping adjustment assembly 500 to ensure that the cumulative force (or cumulative tensile stress) applied to the surface of the belt by the damping assembly 200 and the clamping assembly 400 is much smaller than the tension strength [σ] corresponding to the saw blade 800, thereby ensuring that the band saw blade does not suffer premature belt fracture and failure.

[0090] Compared with the prior art, the sawing device provided by the present application includes a guide component 100, a damping assembly 200, a hydraulic damping adjustment assembly 300, a clamping assembly 400, a hydraulic clamping adjustment assembly 500, a displacement acquisition device 600 and a controller 700; the guide component 100 includes a first guide arm 110 and a second guide arm 120, the first end of the first guide arm 110 is fixedly connected to the first end of the second guide arm 120, the first guide arm 110 is arranged at the first end of the saw blade 800, and the second guide arm 120 is arranged at the second end of the saw blade 800; the damping assembly 200 is fixed to the second end of the first guide arm 110 and the second end of the second guide arm 120 The oil circuit of the damping assembly 200 is connected to the hydraulic damping adjustment assembly 300, and the damping assembly 200 contacts the surface of the saw blade 800; the clamping assembly 400 is fixedly connected to the second end of the first guide arm 110 and the second end of the second guide arm 120, and the oil circuit of the clamping assembly 400 is connected to the hydraulic clamping adjustment assembly 500, and the clamping assembly 400 is used to clamp the saw blade 800; the controller 700 is electrically connected to the displacement acquisition device 600, the hydraulic damping adjustment assembly 300 and the hydraulic clamping adjustment assembly 500; the displacement acquisition device 600 is used to collect the bending displacement of the middle part of the saw blade 800 during the sawing process; the controller 700 is used to collect the bending displacement of the middle part of the saw blade 800 according to the first guide arm 1 10 and the second guide arm 120, and the arm spacing and bending displacement between the first guide arm 110 and the second guide arm 120 are used to obtain the equivalent bending moment of the middle part of the saw blade 800 during the sawing process, and according to the equivalent bending moment and the preset equivalent bending moment range, the hydraulic damping adjustment component 300 and the hydraulic clamping adjustment component 500 are controlled to adjust the forces applied to the surface of the saw blade 800 by the damping component 200 and the clamping component 400 respectively. In this application, the equivalent bending moment of the middle part of the saw blade 800 during the sawing process is calculated by the arm spacing between the first guide arm 110 and the second guide arm 120 and the bending displacement of the middle part of the saw blade 800 collected in real time by the displacement collection device 600 during the sawing process, and then the equivalent bending moment of the middle part of the saw blade 800 is obtained by the middle part of the saw blade 800. The equivalent bending moment of the middle part of the saw blade 800 and the preset equivalent bending moment range are used to control the hydraulic damping adjustment component 300 and the hydraulic clamping adjustment component 500 in real time, so as to adjust the friction force applied by the damping component 200 to the surface of the saw blade 800 and the clamping force applied by the clamping component 400 to the surface of the saw blade 800 in real time, so that the equivalent bending moment of the middle part of the saw blade 800 is maintained within the preset equivalent bending moment range during the sawing process, which can greatly reduce the situation where the middle part of the saw blade 800 has a relatively large upward bending deformation or a relatively large downward bending deformation, can effectively improve the sawing accuracy and sawing efficiency of the workpiece, and can effectively improve the service life of the saw blade 800.

[0091] like Figures 3 to 5As shown, as an embodiment, in the embodiment of the present application, the damping assembly 200 includes a first damping component 210, a second damping component 220, a third damping component 230 and a fourth damping component 240, and the hydraulic damping adjustment assembly 300 includes a first hydraulic damping adjustment component 310, a second hydraulic damping adjustment component 320, a third hydraulic damping adjustment component 330 and a fourth hydraulic damping adjustment component 340; the first damping component 210 is fixedly connected to the second end of the first guide arm 110, the oil circuit of the first damping component 210 is communicated with the first hydraulic damping adjustment component 310, the first damping component 210 is in contact with the surface of the saw blade 800, and is close to the back edge of the first end of the saw blade 800; the second damping component 220 is fixedly connected to the second end of the first guide arm 110, the oil circuit of the second damping component 220 is communicated with the second hydraulic damping adjustment component 320, and the second damping Component 220 contacts the surface of the saw blade 800 and is close to the serrated edge of the first end of the saw blade 800; the third damping component 230 is fixedly connected to the second end of the second guide arm 120, the oil circuit of the third damping component 230 is communicated with the third hydraulic damping adjustment component 330, the third damping component 230 contacts the surface of the saw blade 800 and is close to the back edge of the second end of the saw blade 800; the fourth damping component 240 is fixedly connected to the second end of the second guide arm 120, the oil circuit of the fourth damping component 240 is communicated with the fourth hydraulic damping adjustment component 340, the fourth damping component 240 contacts the surface of the saw blade 800 and is close to the serrated edge of the second end of the saw blade 800; the controller 700 is electrically connected to the first hydraulic damping adjustment component 310, the second hydraulic damping adjustment component 320, the third hydraulic damping adjustment component 330 and the fourth hydraulic damping adjustment component 340, respectively.

[0092] In this embodiment, the first damping component 210 contacts the surface of the saw blade 800 and the position of the back edge close to the first end of the saw blade 800, and can generate friction on the surface of the saw blade 800 and the position of the back edge close to the first end of the saw blade 800. The second damping component 220 contacts the surface of the saw blade 800 and the position of the serrated edge close to the first end of the saw blade 800, and can generate friction on the surface of the saw blade 800 and the position of the serrated edge close to the first end of the saw blade 800. The third damping component 230 contacts the surface of the saw blade 800 and the position of the back edge close to the second end of the saw blade 800, and can generate friction on the surface of the saw blade 800 and the position of the back edge close to the second end of the saw blade 800. The fourth damping component 230 contacts the surface of the saw blade 800 and the position of the back edge close to the second end of the saw blade 800. The damping component 240 contacts the surface of the saw blade 800 and the position of the serrated edge near the second end of the saw blade 800, which can generate friction on the surface of the saw blade 800 and the position of the serrated edge near the second end of the saw blade 800. The controller 700 can adjust the friction forces applied by the first damping component 210, the second damping component 220, the third damping component 230 and the fourth damping component 240 to the contact position with the surface of the saw blade 800 by controlling the first hydraulic damping adjustment component 310, the second hydraulic damping adjustment component 320, the third hydraulic damping adjustment component 330 and the fourth hydraulic damping adjustment component 340, respectively, so that the adjustment effect of the friction forces applied to the two ends of the surface of the saw blade 800 is better.

[0093] like Figures 3 to 5 As shown, as an embodiment, in the embodiment of the present application, the clamping assembly 400 includes a first clamping component 410 and a second clamping component 420, and the hydraulic clamping adjustment assembly 500 includes a first hydraulic clamping adjustment component 510 and a second hydraulic clamping adjustment component 520; the first clamping component 410 is fixedly connected to the second end of the first guide arm 110, and the oil circuit of the first clamping component 410 is connected to the first hydraulic clamping adjustment component 510; the second clamping component 420 is fixedly connected to the second end of the second guide arm 120, and the oil circuit of the second clamping component 420 is connected to the second hydraulic clamping adjustment component 520; the controller 700 is electrically connected to the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520.

[0094] In this embodiment, the first clamping component 410 is used to clamp the surface of the first end of the saw blade 800, and the second clamping component 420 is used to clamp the surface of the second end of the saw blade 800. The controller 700 can respectively adjust the clamping force applied by the first clamping component 410 to the surface of the first end of the saw blade 800 and the clamping force applied by the second clamping component 420 to the surface of the second end of the saw blade 800 by controlling the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520, so that the adjustment effect of the clamping force applied to the two ends of the surface of the saw blade 800 is better.

[0095] like Figures 3 to 5 As shown, as an implementation manner, in the embodiment of the present application, the preset equivalent bending moment range is from a first preset equivalent bending moment value to a second preset equivalent bending moment value. When the controller 700 controls the hydraulic damping adjustment assembly 300 and the hydraulic clamping adjustment assembly 500 according to the equivalent bending moment and the preset equivalent bending moment range to adjust the forces applied by the damping assembly 200 and the clamping assembly 400 to the surface of the saw blade 800, the controller 700 is specifically used to:

[0096] When the equivalent bending moment is less than the first preset equivalent bending moment value, the first hydraulic damping adjustment component 310, the third hydraulic damping adjustment component 330, the first hydraulic clamping adjustment component 510, and the second hydraulic clamping adjustment component 520 are controlled to adjust the forces applied to the surface of the saw blade 800 by the first damping component 210, the third damping component 230, the first clamping component 410, and the second clamping component 420, respectively;

[0097] In this embodiment, the first preset equivalent bending moment value may be -1.8 mm. When the equivalent bending moment is less than the first preset equivalent bending moment value, that is, when a relatively large downward bending deformation occurs in the middle of the saw blade 800, the controller 700 controls the first hydraulic damping adjustment component 310, the third hydraulic damping adjustment component 330, the first hydraulic clamping adjustment component 510, and the second hydraulic clamping adjustment component 520 respectively to adjust the friction applied by the first damping component 210 to the surface of the saw blade 800 and near the back edge of the first end of the saw blade 800. The friction force of the third damping component 230 applied to the surface of the saw blade 800 and close to the back edge of the second end of the saw blade 800, the clamping force of the first clamping component 410 applied to the surface of the first end of the saw blade 800, and the clamping force of the second clamping component 420 applied to the surface of the second end of the saw blade 800, so that the adjusted equivalent bending moment is within the preset equivalent bending moment range. Specifically, the controller 700 may first control the first hydraulic damping adjustment component 310 and the third hydraulic damping adjustment component 330 to adjust the first damping component 210. The friction force applied to the surface of the saw blade 800 and close to the back edge of the first end of the saw blade 800 and the friction force applied to the surface of the saw blade 800 and close to the back edge of the second end of the saw blade 800 by the third damping component 230, if the adjusted equivalent bending moment is within the preset equivalent bending moment range, there is no need to control the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520 to adjust the clamping force applied to the surface of the first end of the saw blade 800 by the first clamping component 410 and the clamping force applied to the surface of the saw blade 800 by the second clamping component 420. The clamping force on the surface of the second end of the saw blade 800 is applied by the first clamping component 410, and the clamping force on the surface of the second end of the saw blade 800 is applied by the second clamping component 420. If the adjusted equivalent bending moment cannot be within the preset equivalent bending moment range by adjusting the friction force applied by the first damping component 210 and the third damping component 230, the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520 are controlled to adjust the clamping force on the surface of the first end of the saw blade 800 and the clamping force on the surface of the second end of the saw blade 800, so that the adjusted equivalent bending moment is within the preset equivalent bending moment range.

[0098] When the equivalent bending moment is greater than the second preset equivalent bending moment value, the second hydraulic damping adjustment component 320, the fourth hydraulic damping adjustment component 340, the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520 are controlled to adjust the forces applied to the surface of the saw blade 800 by the second damping component 220, the fourth damping component 240, the first clamping component 410 and the second clamping component 420 respectively.

[0099] In this embodiment, the second preset equivalent bending moment value may be 1.8 mm. When the equivalent bending moment is greater than the second preset equivalent bending moment value, that is, when a relatively large upward bending deformation occurs in the middle of the saw blade 800, the controller 700 controls the second hydraulic damping adjustment component 320, the fourth hydraulic damping adjustment component 340, the first hydraulic clamping adjustment component 510, and the second hydraulic clamping adjustment component 520 respectively to adjust the friction force applied by the second damping component 220 to the surface of the saw blade 800 and the position of the serrated edge near the first end of the saw blade 800. , the friction force of the fourth damping component 240 applied to the surface of the saw blade 800 and close to the serrated edge of the second end of the saw blade 800, the clamping force applied to the surface of the first end of the saw blade 800 by the first clamping component 410 and the clamping force applied to the surface of the second end of the saw blade 800 by the second clamping component 420, so that the adjusted equivalent bending moment is within the preset equivalent bending moment range. Specifically, the controller 700 may first control the second hydraulic damping adjustment component 320 and the fourth hydraulic damping adjustment component 340 to adjust the second damping component 220 The friction force applied to the surface of the saw blade 800 and the position of the serrated edge near the first end of the saw blade 800 and the friction force applied to the surface of the saw blade 800 and the position of the serrated edge near the second end of the saw blade 800 by the fourth damping component 240, if the adjusted equivalent bending moment is within the preset equivalent bending moment range, there is no need to control the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520 to adjust the clamping force applied to the surface of the first end of the saw blade 800 by the first clamping component 410 and the clamping force applied to the surface of the saw blade 800 by the second clamping component 420. The clamping force on the surface of the second end of the saw blade 800 is applied. If the friction force applied by the second damping component 220 and the fourth damping component 240 is adjusted, and the adjusted equivalent bending moment cannot be within the preset equivalent bending moment range, the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520 are controlled to adjust the clamping force applied to the surface of the first end of the saw blade 800 by the first clamping component 410 and the clamping force applied to the surface of the second end of the saw blade 800 by the second clamping component 420, so that the adjusted equivalent bending moment is within the preset equivalent bending moment range.

[0100] In this embodiment, when the equivalent bending moment is greater than the second preset equivalent bending moment value, in order to prevent the force applied to the surface of the saw blade 800 by the second damping component 220, the fourth damping component 240, the first clamping component 410 and the second clamping component 420 from exceeding the safe range of the tensile strength of the saw blade 800 and accelerating the fatigue failure of the saw blade 800, the controller 700 can control the second hydraulic damping adjustment component 320, the fourth hydraulic damping adjustment component 340, the first hydraulic clamping adjustment component 510 and the second hydraulic clamping adjustment component 520 to ensure that the cumulative force (or cumulative tensile stress) applied to the surface of the saw blade 800 by the second damping component 220, the fourth damping component 240, the first clamping component 410 and the second clamping component 420 is much smaller than the tension strength [σ] corresponding to the saw blade 800, thereby ensuring that the band saw blade does not suffer premature fracture and failure.

[0101] like Figures 3 to 6 As shown, as an embodiment, in the embodiment of the present application, the first hydraulic damping adjustment component 310 includes a first electromagnetic proportional reversing valve 311, a first oil inlet electromagnetic valve 312 and a first oil return electromagnetic valve 313, and the first damping component 210 includes a first friction block 212, a first compression spring 213, a first connecting plate 214 and a first oil cylinder 211; the first end of the first friction block 212 contacts the surface of the saw blade 800 and is close to the back edge of the first end of the saw blade 800; the second end of the first friction block 212 is provided with a first groove 215, and the first compression spring 213 and the first connecting plate 214 are arranged in the first groove 215; the first end of the first compression spring 213 is fixedly connected to the bottom of the first groove 215; the second end of the first compression spring 213 The first connecting plate 214 is fixedly connected to the first side of the first connecting plate 214; the second side of the first connecting plate 214 is fixedly connected to the piston rod of the first oil cylinder 211; the cylinder barrel of the first oil cylinder 211 is fixedly connected to the second end of the first guide arm 110; the rodless chamber of the first oil cylinder 211 is connected to the oil port A of the first electromagnetic proportional reversing valve 311, and the rod chamber of the first oil cylinder 211 is connected to the oil port B of the first electromagnetic proportional reversing valve 311; the oil port P of the first electromagnetic proportional reversing valve 311 is connected to the oil outlet of the first oil inlet solenoid valve 312; the oil port T of the first electromagnetic proportional reversing valve 311 is connected to the oil inlet of the first oil return solenoid valve 313; and the controller 700 is electrically connected to the first electromagnetic proportional reversing valve 311, the first oil inlet solenoid valve 312, and the first oil return solenoid valve 313, respectively. In this embodiment, the fixed connection between the cylinder barrel of the first oil cylinder 211 and the second end of the first guide arm 110 is not shown in the drawings.

[0102] In this embodiment, the sawing device further includes an oil tank 930 and a hydraulic motor 940. The oil inlet of the hydraulic motor 940 is connected to the oil tank 930, the oil outlet of the hydraulic motor 940 is connected to the oil inlet of the first oil inlet solenoid valve 312, and the oil outlet of the first oil return solenoid valve 313 is connected to the oil tank 930. The first oil inlet solenoid valve 312 and the first oil return solenoid valve 313 can be electromagnetic one-way valves. The controller 700 can adjust the opening of the first electromagnetic proportional reversing valve 311 by adjusting the magnitude of the electrical signal sent to the first electromagnetic proportional reversing valve 311, and control the working direction of the first electromagnetic proportional reversing valve 311 by energizing the first electromagnetic proportional reversing valve 311 to the right position or the left position. When it is necessary to control the first hydraulic damping adjustment component 310 to adjust the friction force applied by the first damping component 210 to the surface of the saw blade 800 and near the back edge of the first end of the saw blade 800, the specific control principle can be as follows:

[0103] When it is necessary to increase the friction force applied by the first damping component 210 to the surface of the saw blade 800 and near the back edge of the first end of the saw blade 800, the controller 700 first sends an electrical signal to the first oil inlet solenoid valve 312 and the first oil return solenoid valve 313, so that the first oil inlet solenoid valve 312 and the first oil return solenoid valve 313 are both opened, and the controller 700 then sends an electrical signal to the first electromagnetic proportional reversing valve 311 to energize the first electromagnetic proportional reversing valve 311 to the right position. When the first electromagnetic proportional reversing valve 311 is energized in the right position, the first electromagnetic proportional The P oil port and the A oil port of the reversing valve 311 are connected, so that the pressure oil input from the P oil port can be connected to the rodless chamber of the first oil cylinder 211. Since the B oil port and the T oil port of the first electromagnetic proportional reversing valve 311 are connected, the oil in the rod chamber of the first oil cylinder 211 is returned to the oil tank 930, causing the piston rod of the first oil cylinder 211 to slide outward, causing the first connecting plate 214 to compress the first compression spring 213, thereby increasing the friction force applied by the first friction block 212 to the surface of the saw blade 800 near the back edge of the first end of the saw blade 800;

[0104] When it is necessary to reduce the friction force applied by the first damping component 210 to the surface of the saw blade 800 and near the back edge of the first end of the saw blade 800, the controller 700 first sends an electrical signal to the first oil inlet solenoid valve 312 and the first oil return solenoid valve 313, so that the first oil inlet solenoid valve 312 and the first oil return solenoid valve 313 are both opened, and the controller 700 then sends an electrical signal to the first electromagnetic proportional reversing valve 311 to enable the first electromagnetic proportional reversing valve 311 to be energized in the left position. When the first electromagnetic proportional reversing valve 311 is energized in the left position, the first electromagnetic proportional reversing valve 311 is energized in the left position. For example, the P oil port and the B oil port of the reversing valve 311 are connected, so that the pressure oil input from the P oil port can be connected to the rod chamber of the first oil cylinder 211. Since the A oil port and the T oil port of the first electromagnetic proportional reversing valve 311 are connected, the rodless chamber of the first oil cylinder 211 returns oil to the oil tank 930, so that the piston rod of the first oil cylinder 211 slides inward, so that the first connecting plate 214 stretches the first compression spring 213, thereby reducing the friction force applied by the first friction block 212 to the surface of the saw blade 800 and close to the back edge of the first end of the saw blade 800.

[0105] In this embodiment, the second hydraulic damping adjustment component 320 includes a second electromagnetic proportional reversing valve 321, a second oil inlet solenoid valve 322 and a second oil return solenoid valve 323, the third hydraulic damping adjustment component 330 includes a third electromagnetic proportional reversing valve 331, a third oil inlet solenoid valve 332 and a third oil return solenoid valve 333, the fourth hydraulic damping adjustment component 340 includes a fourth electromagnetic proportional reversing valve 341, a fourth oil inlet solenoid valve 342 and a fourth oil return solenoid valve 343, the second damping component 220 includes a second friction block, a second compression spring, a second connecting plate 224 and a second oil cylinder 221, and the third damping component 2 30 includes a third friction block, a third compression spring, a third connecting plate 234 and a third oil cylinder 231, the fourth damping component 240 includes a fourth friction block, a fourth compression spring, a fourth connecting plate 244 and a fourth oil cylinder 241, the connection relationship between the second hydraulic damping adjustment component 320 and the second damping component 220, the third hydraulic damping adjustment component 330 and the third damping component 230, the fourth hydraulic damping adjustment component 340 and the fourth damping component 240 are the same as the connection relationship between the first hydraulic damping adjustment component 310 and the first damping component 210, and are not repeated here.

[0106] like Figures 3 to 5 and Figure 7As shown, the first hydraulic clamping adjustment component 510 includes a fifth electromagnetic proportional reversing valve 511, a fifth oil inlet solenoid valve 512 and a fifth oil return solenoid valve 513, the first clamping component 410 includes a first clamping block 412 and a fifth oil cylinder 411, the upper end of the first clamping block 412 is fixedly connected to the second end of the first guide arm 110, and the lower end of the first clamping block 412 is provided with a second groove 413, the first end of the piston rod of the fifth oil cylinder 411 passes through one side of the lower end of the first clamping block 412 and extends into the second groove 413, the cylinder barrel of the fifth oil cylinder 411 is fixedly connected to the second end of the first guide arm 110, the rodless chamber of the fifth oil cylinder 411 is connected to the A oil port of the fifth electromagnetic proportional reversing valve 511, the rod chamber of the fifth oil cylinder 411 is connected to the B oil port of the fifth electromagnetic proportional reversing valve 511, and the P oil port of the fifth electromagnetic proportional reversing valve 511 is connected to the fifth oil inlet solenoid valve 512 The oil outlet is connected, the T oil port of the fifth electromagnetic proportional reversing valve 511 is connected to the oil inlet of the fifth oil return solenoid valve 513, the oil outlet of the hydraulic motor 940 is connected to the oil inlet of the fifth oil inlet solenoid valve 512, and the oil outlet of the fifth oil return solenoid valve 513 is connected to the oil tank 930. The controller 700 is electrically connected to the fifth electromagnetic proportional reversing valve 511, the fifth oil inlet solenoid valve 512, and the fifth oil return solenoid valve 513 respectively. The fifth oil inlet solenoid valve 512 and the fifth oil return solenoid valve 513 can be electromagnetic one-way valves. A pre-guide wheel 414 can be fixedly provided under the first clamping block 412. The pre-guide wheel can be a bearing. The saw blade 800 is assisted in guiding by the pre-guide wheel 414. When it is necessary to control the first hydraulic clamping adjustment component 510 to adjust the clamping force applied by the first clamping component 410 to the surface of the first end of the saw blade 800, the specific control principle can be as follows:

[0107] When it is necessary to increase the clamping force applied by the first clamping component 410 to the surface of the first end of the saw blade 800, the controller 700 first sends an electrical signal to the fifth oil inlet solenoid valve 512 and the fifth oil return solenoid valve 513, so that the fifth oil inlet solenoid valve 512 and the fifth oil return solenoid valve 513 are both opened. The controller 700 then sends an electrical signal to the fifth electromagnetic proportional reversing valve 511 so that the fifth electromagnetic proportional reversing valve 511 is energized in the right position. When the fifth electromagnetic proportional reversing valve 511 is energized in the right position, the P oil port and the A oil port of the fifth electromagnetic proportional reversing valve 511 are connected, so that the pressure oil input from the P oil port can be connected to the rodless chamber of the fifth oil cylinder 411. Since the B oil port and the T oil port of the fifth electromagnetic proportional reversing valve 511 are connected, the rod chamber of the fifth oil cylinder 411 returns oil to the oil tank 930, so that the piston rod of the fifth oil cylinder 411 slides outward and extends, thereby increasing the clamping force applied by the first end of the piston rod to the surface of the first end of the saw blade 800.

[0108] When it is necessary to reduce the clamping force applied by the first clamping component 410 to the surface of the first end of the saw blade 800, the controller 700 first sends an electrical signal to the fifth oil inlet solenoid valve 512 and the fifth oil return solenoid valve 513, so that the fifth oil inlet solenoid valve 512 and the fifth oil return solenoid valve 513 are both opened, and the controller 700 then sends an electrical signal to the fifth electromagnetic proportional reversing valve 511 to energize the fifth electromagnetic proportional reversing valve 511 to the left position. When the fifth electromagnetic proportional reversing valve 511 is energized to the left position, the P oil port and the B oil port of the fifth electromagnetic proportional reversing valve 511 are connected, so that the pressure oil input from the P oil port can be connected to the rod chamber of the fifth oil cylinder 411. Since the A oil port and the T oil port of the fifth electromagnetic proportional reversing valve 511 are connected, the rodless chamber of the fifth oil cylinder 411 returns oil to the oil tank 930, so that the piston rod of the fifth oil cylinder 411 slides inward, thereby reducing the clamping force applied by the first end of the piston rod to the surface of the first end of the saw blade 800.

[0109] The second hydraulic clamping and adjusting component 520 includes a sixth electromagnetic proportional reversing valve 521, a sixth oil inlet solenoid valve 522 and a sixth oil return solenoid valve 523, and the second clamping component 420 includes a second clamping block 422 and a sixth oil cylinder 421. The connection relationship between the second hydraulic clamping and adjusting component 520 and the various sub-components in the second clamping component 420 is the same as the connection relationship between the first hydraulic clamping and adjusting component 510 and the various sub-components in the first clamping component 410, and will not be repeated here.

[0110] like Figure 3 As shown, as an implementation method, the embodiment of the present application also includes: a pressure gauge 910; the pressure gauge 910 is arranged on the pipeline between the rodless chamber of the first oil cylinder 211 and the oil port A of the first electromagnetic proportional reversing valve 311, and is used to measure and display the oil pressure in the pipeline between the rodless chamber of the first oil cylinder 211 and the oil port A of the first electromagnetic proportional reversing valve 311.

[0111] In this embodiment, a pressure gauge 910 can also be set on the pipeline between the rodless chamber of the second cylinder 221 and the oil port A of the second electromagnetic proportional reversing valve 321, on the pipeline between the rodless chamber of the third cylinder 231 and the oil port A of the third electromagnetic proportional reversing valve 331, on the pipeline between the rodless chamber of the fourth cylinder 241 and the oil port A of the fourth electromagnetic proportional reversing valve 341, on the pipeline between the rodless chamber of the fifth cylinder 411 and the oil port A of the fifth electromagnetic proportional reversing valve 511, and on the pipeline between the rodless chamber of the sixth cylinder 421 and the oil port A of the sixth electromagnetic proportional reversing valve 521.

[0112] like Figure 4As shown, as an embodiment, in the embodiment of the present application, the guide component 100 also includes a connecting member 130; the first end of the first guide arm 110 and the first end of the connecting member 130 are fixedly connected; the first end of the second guide arm 120 and the second end of the connecting member 130 are fixedly connected, and the first guide arm 110 and the second guide arm 120 are arranged in parallel; the displacement acquisition device 600 is arranged in the middle of the connecting member 130.

[0113] In this embodiment, the first end of the first guide arm 110 and the first end of the connecting member 130 can be fixedly connected by bolts, and the first end of the second guide arm 120 and the second end of the connecting member 130 can be fixedly connected by bolts. The arm spacing between the first guide arm 110 and the second guide arm 120 can be adjusted according to the type of workpiece to be sawed and the type of saw blade 800. The displacement acquisition device 600 can be a laser displacement sensor or a laser coaxial displacement meter.

[0114] like Figure 4 As shown, as an implementation manner, in the embodiment of the present application, it also includes: a ranging sensor 920; the ranging sensor 920 is arranged on the first guide arm 110 or the second guide arm 120; the ranging sensor 920 is electrically connected to the controller 700, and the ranging sensor 920 is used to collect the arm distance between the first guide arm 110 and the second guide arm 120, and send the collected arm distance to the controller 700.

[0115] In this embodiment, the distance measuring sensor 920 is disposed on the second guide arm 120 , and the distance measuring sensor 920 may be a laser distance measuring sensor 920 .

[0116] like Figure 8 As shown, the present application also provides a sawing control method, which is applied to the above-mentioned sawing device, and the method includes:

[0117] S1, obtaining the arm distance between the first guide arm and the second guide arm;

[0118] S2. Acquiring the bending displacement of the middle portion of the saw blade during the sawing process collected by the displacement collection device;

[0119] S3. Obtaining the equivalent bending moment of the middle portion of the saw blade during the sawing process based on the arm spacing and the bending displacement;

[0120] S4. Control the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly according to the equivalent bending moment and the preset equivalent bending moment range to adjust the forces applied by the damping assembly and the clamping assembly to the surface of the saw blade, respectively.

[0121] In this embodiment, in order to prevent the force applied to the surface of the saw blade by the damping assembly and the clamping assembly from exceeding the safe range of the tensile strength of the saw blade and accelerating the fatigue failure of the saw blade band, the controller can control the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly to ensure that the cumulative force (or cumulative tensile stress) applied to the surface of the saw blade band by the damping assembly and the clamping assembly is much smaller than the corresponding saw blade tension strength [σ], thereby ensuring that the band saw blade does not break and fail prematurely.

[0122] As an implementation manner, in an embodiment of the present application, applied to the above-mentioned sawing device, the preset equivalent bending distance range is from the first preset equivalent bending distance value to the second preset equivalent bending distance value, and step S4 includes:

[0123] S41, when the equivalent bending moment is less than a first preset equivalent bending moment value, controlling the first hydraulic damping adjustment component, the third hydraulic damping adjustment component, the first hydraulic clamping adjustment component, and the second hydraulic clamping adjustment component to adjust the forces applied to the surface of the saw blade by the first damping component, the third damping component, the first clamping component, and the second clamping component, respectively;

[0124] S42. When the equivalent bending moment is greater than the second preset equivalent bending moment value, control the second hydraulic damping adjustment component, the fourth hydraulic damping adjustment component, the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component to adjust the forces applied to the surface of the saw blade by the second damping component, the fourth damping component, the first clamping component and the second clamping component respectively.

[0125] In this embodiment, when the equivalent bending moment is greater than the second preset equivalent bending moment value, in order to prevent the force applied to the surface of the saw blade by the second damping component, the fourth damping component, the first clamping component and the second clamping component from exceeding the safe range of the tensile strength of the saw blade and accelerating the fatigue failure of the saw blade band, the controller can control the second hydraulic damping adjustment component, the fourth hydraulic damping adjustment component, the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component to ensure that the cumulative force (or cumulative tensile stress) applied to the surface of the saw blade by the second damping component, the fourth damping component, the first clamping component and the second clamping component is much smaller than the tension strength [σ] corresponding to the saw blade, thereby ensuring that the band saw blade does not suffer premature fracture and failure.

[0126] It should be understood that the use of "system," "device," "unit," and / or "module" in this application is merely a method for distinguishing different components, elements, parts, portions, or assemblies at different levels. However, if other terms can achieve the same purpose, the terms may be replaced by other expressions.

[0127] The embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other.

[0128] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sawing device, characterized in that: It includes a guide component, a clamping component, a damping component, a hydraulic damping adjustment component, a hydraulic clamping adjustment component, a displacement acquisition device and a controller; The guide component includes a first guide arm and a second guide arm, wherein a first end of the first guide arm and a first end of the second guide arm are fixedly connected, the first guide arm is arranged at a first end of the saw blade, and the second guide arm is arranged at a second end of the saw blade; The damping assembly is fixedly connected to the second end of the first guide arm and the second end of the second guide arm, the oil circuit of the damping assembly is connected to the hydraulic damping adjustment assembly, and the damping assembly is in contact with the surface of the saw blade; The clamping assembly is fixedly connected to the second end of the first guide arm and the second end of the second guide arm, the oil circuit of the clamping assembly is connected to the hydraulic clamping adjustment assembly, and the clamping assembly is used to clamp the saw blade; The controller is electrically connected to the displacement acquisition device, the hydraulic damping adjustment component and the hydraulic clamping adjustment component; The displacement acquisition device is used to acquire the bending displacement of the middle portion of the saw blade during the sawing process; The controller is configured to obtain an equivalent bending moment of the middle portion of the saw blade during sawing based on the arm spacing between the first guide arm and the second guide arm and the bending displacement, and to control the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly based on the equivalent bending moment and a preset equivalent bending moment range to adjust the forces applied by the damping assembly and the clamping assembly to the surface of the saw blade, respectively; The damping assembly includes at least one damping component, the hydraulic damping adjustment assembly includes at least one hydraulic damping adjustment component, the damping component includes a friction block, a compression spring, a connecting plate and an oil cylinder, and the hydraulic damping adjustment component includes an electromagnetic proportional reversing valve, an oil inlet solenoid valve and an oil return solenoid valve; The first end of the friction block contacts the surface of the saw blade; The second end of the friction block is provided with a groove, and the compression spring and the connecting plate are arranged in the groove; The first end of the compression spring is fixedly connected to the bottom of the groove; The second end of the compression spring is fixedly connected to the first side of the connecting plate; The second side of the connecting plate is fixedly connected to the piston rod of the oil cylinder; The cylinder barrel of the oil cylinder is fixedly connected to the second end of the first guide arm or the second end of the second guide arm; The rodless chamber of the oil cylinder is connected to the oil port A of the electromagnetic proportional reversing valve, and the rod chamber of the oil cylinder is connected to the oil port B of the electromagnetic proportional reversing valve; The P oil port of the electromagnetic proportional reversing valve is connected to the oil outlet of the oil inlet solenoid valve; The T oil port of the electromagnetic proportional reversing valve is connected to the oil inlet of the oil return solenoid valve; The controller is electrically connected to the electromagnetic proportional reversing valve, the oil inlet solenoid valve, and the oil return solenoid valve respectively.

2. The sawing device according to claim 1, characterized in that The damping assembly includes a first damping component, a second damping component, a third damping component and a fourth damping component, and the hydraulic damping adjustment assembly includes a first hydraulic damping adjustment component, a second hydraulic damping adjustment component, a third hydraulic damping adjustment component and a fourth hydraulic damping adjustment component; The first damping component is fixedly connected to the second end of the first guide arm, the oil circuit of the first damping component is connected to the first hydraulic damping adjustment component, and the first damping component is in contact with the surface of the saw blade and close to the back edge of the first end of the saw blade; The second damping component is fixedly connected to the second end of the first guide arm, the oil circuit of the second damping component is connected to the second hydraulic damping adjustment component, and the second damping component is in contact with the surface of the saw blade and close to the serrated edge of the first end of the saw blade; The third damping component is fixedly connected to the second end of the second guide arm, the oil circuit of the third damping component is connected to the third hydraulic damping adjustment component, and the third damping component is in contact with the surface of the saw blade and close to the back edge of the second end of the saw blade; The fourth damping component is fixedly connected to the second end of the second guide arm, the oil circuit of the fourth damping component is connected to the fourth hydraulic damping adjustment component, and the fourth damping component is in contact with the surface of the saw blade and is close to the serrated edge of the second end of the saw blade; The controller is electrically connected to the first hydraulic damping adjustment component, the second hydraulic damping adjustment component, the third hydraulic damping adjustment component, and the fourth hydraulic damping adjustment component respectively; The first to fourth damping components have the same structure, and the first to fourth hydraulic damping adjustment components have the same structure.

3. The sawing device according to claim 2, characterized in that The clamping assembly includes a first clamping component and a second clamping component, and the hydraulic clamping adjustment assembly includes a first hydraulic clamping adjustment component and a second hydraulic clamping adjustment component; The first clamping component is fixedly connected to the second end of the first guide arm, and the oil circuit of the first clamping component is connected to the first hydraulic clamping adjustment component; The second clamping component is fixedly connected to the second end of the second guide arm, and the oil circuit of the second clamping component is connected to the second hydraulic clamping adjustment component; The controller is electrically connected to the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component.

4. The sawing device according to claim 3, characterized in that The preset equivalent bending moment range is from a first preset equivalent bending moment value to a second preset equivalent bending moment value. When the controller controls the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly according to the equivalent bending moment and the preset equivalent bending moment range to adjust the forces respectively applied by the damping assembly and the clamping assembly to the surface of the saw blade, the controller is specifically configured to: When the equivalent bending moment is less than the first preset equivalent bending moment value, controlling the first hydraulic damping adjustment component, the third hydraulic damping adjustment component, the first hydraulic clamping adjustment component, and the second hydraulic clamping adjustment component to adjust the forces respectively applied to the surface of the saw blade by the first damping component, the third damping component, the first clamping component, and the second clamping component; When the equivalent bending moment is greater than the second preset equivalent bending moment value, the second hydraulic damping adjustment component, the fourth hydraulic damping adjustment component, the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component are controlled to adjust the forces applied to the surface of the saw blade by the second damping component, the fourth damping component, the first clamping component and the second clamping component respectively.

5. The sawing device according to claim 1, characterized in that Also includes: pressure gauge; The pressure gauge is arranged on the pipeline between the rodless chamber of the oil cylinder and the oil port A of the electromagnetic proportional reversing valve, and is used to measure and display the oil pressure in the pipeline between the rodless chamber of the oil cylinder and the oil port A of the electromagnetic proportional reversing valve.

6. The sawing device according to claim 1, characterized in that The guide component further includes a connecting piece; The first end of the first guide arm is fixedly connected to the first end of the connecting member; The first end of the second guide arm is fixedly connected to the second end of the connecting member; The displacement acquisition device is arranged in the middle of the connecting member.

7. The sawing device according to claim 1, characterized in that Also includes: Distance measuring sensor; The distance measuring sensor is arranged on the first guide arm or the second guide arm; The distance measuring sensor is electrically connected to the controller, and is used to collect the arm distance between the first guide arm and the second guide arm, and send the collected arm distance to the controller.

8. A sawing control method, characterized in that: Applied to the sawing device according to claim 1, the method comprises: obtaining an arm distance between the first guide arm and the second guide arm; Acquiring the bending displacement of the middle portion of the saw blade during the sawing process collected by the displacement collection device; Obtaining an equivalent bending moment of the middle portion of the saw blade during sawing according to the arm spacing and the bending displacement; According to the equivalent bending moment and a preset equivalent bending moment range, the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly are controlled to adjust the forces applied by the damping assembly and the clamping assembly to the surface of the saw blade respectively.

9. The sawing control method according to claim 8, characterized in that: Applied to the sawing device according to claim 3, the preset equivalent bending moment range is from a first preset equivalent bending moment value to a second preset equivalent bending moment value, and controlling the hydraulic damping adjustment assembly and the hydraulic clamping adjustment assembly according to the equivalent bending moment and the preset equivalent bending moment range to adjust the forces applied by the damping assembly and the clamping assembly to the surface of the saw blade, respectively, includes: When the equivalent bending moment is less than the first preset equivalent bending moment value, controlling the first hydraulic damping adjustment component, the third hydraulic damping adjustment component, the first hydraulic clamping adjustment component, and the second hydraulic clamping adjustment component to adjust the forces applied to the surface of the saw blade by the first damping component, the third damping component, the first clamping component, and the second clamping component, respectively; When the equivalent bending moment is greater than the second preset equivalent bending moment value, the second hydraulic damping adjustment component, the fourth hydraulic damping adjustment component, the first hydraulic clamping adjustment component and the second hydraulic clamping adjustment component are controlled to adjust the forces applied to the surface of the saw blade by the second damping component, the fourth damping component, the first clamping component and the second clamping component respectively.

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