High-precision sawing method for z-materials

Abstract

This invention relates to a high-precision sawing method for Z-shaped materials, comprising the following steps: (1) adding a front correction mechanism and a rear correction mechanism to the positioning and clamping mechanism; (2) first-level correction, using the front correction mechanism and the rear correction mechanism to perform first-level correction on the Z-shaped material; if the Z-shaped material is sawn at 90°, then batch processing is performed; if the Z-shaped material is cut at an angle, then a test cut is performed to obtain a test sample; (3) measurement error, measuring the gap distance ΔS on the test sample. 实一 The required gap is ΔS 设 If ΔS 实一 ≤ΔS 设 Then batch processing is possible; ΔS 实一 >ΔS 设 Then the next level correction; (4) Secondary correction, the feed amount variable required by the previous correction mechanism is ΔS 前一 The feed amount variable required by the post-correction mechanism is ΔS 后一 Then S 前二 =S 前一 ±ΔS 前一 According to S 前二 Adjustment of the pre-correction mechanism, according to S 后二 After adjusting the correction mechanism, batch processing or inspection can be carried out. The sawing method of this application has the advantages of reasonable design, minimal modification to existing sawing equipment, strong operability, strong versatility, and high sawing precision.

Description

Technical Field

[0001] This invention relates to the field of door and window profile sawing technology, specifically to a high-precision sawing method for Z-shaped materials. Background Technology

[0002] Sawing is an essential process in the processing of door and window profiles. Common sawing techniques include 45° sawing, 90° sawing, and 135° sawing. 45° and 135° sawing are collectively referred to as beveling, while 90° sawing is also known as perpendicular sawing. Sawing equipment used includes double-head saws, triple-head saws, and sawing processing centers. A sawing processing center generally refers to a sawing device that integrates 45°, 135°, and 90° sawing techniques. Currently, various sawing equipment are relatively mature, and they are largely similar in both working principle and specific structural form. All sawing equipment includes a saw head and a positioning and clamping mechanism that works in conjunction with it. Existing positioning and clamping mechanisms generally use four directions: front-back, top-bottom, and bottom-top. For profiles with relatively square shapes, high structural strength, and resistance to deformation, existing sawing equipment can basically meet the processing requirements.

[0003] Z-shaped materials refer to a type of material with a cross-section that approximates a Z-shape. Typical examples include... Figure 18 The thermally broken aluminum profile shown is another example, such as... Figure 19 The Z-shaped profile shown (which can be processed into hangers) is characterized by its suspended front and back. Thermally broken aluminum profiles consist of sequentially connected aluminum component A, thermal break strip, and aluminum component B, connected and supported by the thermal break strip in the middle. Taking the sawing of thermally broken aluminum profiles as an example, because they are processed by a roll forming machine, there are inherent processing errors. Furthermore, the front and back are suspended, and the strength of the thermal break strip in the middle is generally weak. These factors are unfavorable for positioning and clamping. When using existing positioning and clamping mechanisms, it is easy for the thermally broken aluminum profile to be in a tilted state (during positioning and clamping, aluminum component B at the lower end can be well positioned and clamped, while aluminum component A at the upper end is prone to tilting forward or backward). Therefore, when sawing the thermally broken aluminum profile at 45° and 135°, the sawn surface is easily tilted. When assembling two sawn thermally broken aluminum profiles at corners, the two sawn surfaces cannot fit together, leaving a gap. This undoubtedly seriously affects the quality of door and window processing.

[0004] To improve the sawing accuracy of Z-shaped materials, various techniques have been attempted, but some shortcomings remain. Currently, the most common and accepted method is to design dedicated fixtures (molds) for specific profiles. While this solution can improve sawing accuracy, it also has some drawbacks. First, it is costly. Since the fixtures are dedicated and not universal, and profiles vary in type and size, multiple sets of dedicated fixtures are required, undoubtedly increasing costs. Furthermore, the need to replace these fixtures during actual use is time-consuming and labor-intensive, impacting production efficiency. Second, although sawing accuracy is improved, it is limited, and in most cases, it does not meet the requirements of high-precision sawing. The main reason is the failure to eliminate the adverse effects of systematic errors. Although the dedicated fixtures are made according to the design dimensions of the Z-shaped material, the presence of systematic errors means that in most cases, the dedicated fixtures cannot truly straighten and clamp the Z-shaped material (in most cases, the Z-shaped material is clamped at an angle forward or backward), which limits further improvements in sawing accuracy. Systematic errors mainly include fixture inherent errors, such as fixture machining accuracy errors and cylinder operating errors used for clamping or limiting. These adverse factors directly affect the sawing accuracy of Z-shaped materials. Clearly, existing technologies have not adequately solved the problem of high-precision sawing of Z-shaped materials. Therefore, it is essential to conduct a systematic and in-depth analysis of the Z-shaped material sawing process. Without major modifications to existing sawing equipment, especially without altering the sawing head, innovative improvements to the Z-shaped material sawing process are needed to achieve both versatility and high-precision sawing.

[0005] It should be noted that the above content falls within the inventor's technical knowledge and does not necessarily constitute prior art. Summary of the Invention

[0006] The purpose of this invention is to solve the problems existing in the prior art and provide a high-precision sawing method for Z-shaped materials. It has the advantages of reasonable sawing method design, strong operability, small modification to existing sawing equipment, strong versatility, and high sawing accuracy.

[0007] The present invention achieves the above objectives by adopting the following technical solutions:

[0008] A high-precision sawing method for Z-shaped materials includes the following steps:

[0009] (1) A front correction mechanism and a rear correction mechanism are added to the positioning and clamping mechanism to work together. The rear correction mechanism acts horizontally on the rear suspension of the Z-shaped material, and the front correction mechanism acts horizontally on the front suspension of the Z-shaped material. The feed amount of the front correction mechanism and the rear correction mechanism is adjustable, and the feed amount of at least one of them is designed to be precisely adjustable. The posture of the Z-shaped material is adjusted by the cooperation of the front correction mechanism and the rear correction mechanism.

[0010] (2) First-stage correction: Based on the design dimensions of the standard Z-shaped material, the required feed amount of the front correction mechanism is calculated as follows: The required feed rate for the post-correction mechanism is Then adjust the front correction mechanism to achieve its feed rate. After adjustment, the correction mechanism ensures that the feed amount reaches [the desired level]. The Z-shaped material is first-stage calibrated by the cooperation of the front and rear calibrating mechanisms, and then clamped by the positioning and clamping mechanism. If the Z-shaped material is to be sawn at 90°, the Z-shaped material can be directly sawn in batches using a 90° sawing head. If the Z-shaped material is to be beveled, a beveled sawing head is needed to first test-cut the Z-shaped material clamped by the first-stage calibration to obtain a test sample, and then the error of the test sample is measured.

[0011] (3) Measurement error: Compare the beveled surface of the test sample with the standard beveled surface. During measurement, align the upper or lower end of the beveled surface with the corresponding end of the standard beveled surface; there will be a gap at the other end. The measurement gap distance is... The maximum allowable value of the gap is set to be ,if Then batch sawing can be carried out; if If the value is too low, then the next level of correction is required;

[0012] (4) Secondary correction, based on Based on the design parameters of the front and rear correction mechanisms, the required feed rate variable for the front correction mechanism is calculated as follows: The feed rate variable required by the post-correction mechanism is Therefore, the required feed rate for the front correction mechanism is: The feed amount required by the post-correction mechanism is Adjust the pre-correction mechanism to make its feed amount reach After adjustment, the correction mechanism ensures that the feed amount reaches [the desired level]. Then, a bevel saw head is used to perform batch sawing of the Z-shaped material, or the effect of the secondary straightening is measured and inspected. If so, continue to the next level of correction until... , , .

[0013] The positioning and clamping mechanism and the sawing head are mounted on the frame. The frame has a main beam along the Z-shaped material feeding direction. The positioning and clamping mechanism includes a worktable, a rear positioning plate on the rear side of the worktable, a front clamping mechanism on the front side, and an upper pressing mechanism on the main beam.

[0014] The front clamping mechanism includes a suspension plate mounted on the main beam, a clamping slide rail on the suspension plate, the clamping slide rail forming a 45° angle with the Z-shaped material feeding direction, a clamping slide plate on the clamping slide rail, clamping side plates on both sides of the clamping slide plate, a clamping pressure plate at the bottom of the clamping side plates, and a clamping cylinder on the suspension plate connected to the clamping slide plate. The upper clamping mechanism includes an upper clamping guide rail seat located at the upper end of the main beam, an upper clamping guide rail vertically mounted on the upper clamping guide rail seat, an upper clamping slide plate mounted on the upper clamping guide rail, an upper pressure plate at the lower end of the upper clamping slide plate, and an upper clamping cylinder at the upper end of the upper clamping guide rail seat connected to the upper clamping slide plate.

[0015] The frame is symmetrically equipped with two bevel sawing heads and two positioning and clamping mechanisms. One set of bevel sawing heads and positioning and clamping mechanisms is used for 45° sawing, and the other set of bevel sawing heads and positioning and clamping mechanisms is used for 135° sawing.

[0016] The front correction mechanism is mounted on the front clamping mechanism, and the rear correction mechanism is mounted on the main beam.

[0017] The feed amount of the front correction mechanism is designed to be precisely adjustable. The front correction mechanism includes a front guide rail set on the upper end of the clamping plate. The front guide rail is at a 45° angle to the Z-shaped material feeding direction. A front slide plate is provided on the front guide rail. A front top plate is provided on the front slide plate. A front servo electric cylinder is provided on the two clamping side plates. The front servo electric cylinder is connected to the front slide plate. The feed amount of the front correction mechanism is precisely adjusted by the front servo electric cylinder.

[0018] The rear correction mechanism includes a rear guide rail mounted on the main beam, the rear guide rail being perpendicular to the Z-shaped material feeding direction, a rear sliding top plate mounted on the rear guide rail, an avoidance opening on the rear positioning plate for the rear sliding top plate to extend out, a rear driver mounted on the main beam, the rear driver being connected to the rear sliding top plate, and the rear driver being a cylinder or a servo electric cylinder.

[0019] When the rear actuator uses a cylinder, the rear sliding top plate always applies a rear pushing force to the rear overhang of the Z-shaped material, and the feed amount of the rear correction mechanism is passively and adaptively adjusted according to the feed amount of the front correction mechanism; when the rear actuator uses a servo electric cylinder, the feed amount of the rear correction mechanism is precisely adjusted by the servo electric cylinder.

[0020] The height of the front top plate from the workbench is: The initial position of the horizontal distance between the front end of the top plate and the front end of the clamping plate is... The height of the rear sliding top plate from the worktable is The initial position of the horizontal distance from the front end of the rear sliding top plate to the front end of the rear positioning plate is ; Set the corresponding height on the front side of the standard Z-shaped material The horizontal distance from the position to the lower front end face of the standard Z-shaped material is The The corresponding height on the rear side of the standard Z-shaped material is set. The horizontal distance from the position to the lower rear end face of the standard Z-shaped material is The .

[0021] The test sample includes two test profiles after primary correction and clamping trial cutting. When measuring error, the upper or lower ends of the two test profiles are aligned, and then the gap at the other end is measured. ,but ;

[0022] When the lower ends of the two test profiles are aligned but there is a gap at the upper ends, forward correction is required. The height of the standard Z-shaped material is known to be... Then we can calculate:

[0023] ;

[0024] ;

[0025] ;

[0026] ;

[0027] When the upper ends of the two test profiles are aligned but there is a gap at the lower ends, they need to be corrected backwards. The following calculations can then be made:

[0028] ;

[0029] .

[0030] The present invention, employing the above-described structure, can bring the following beneficial effects:

[0031] To address the characteristic of Z-shaped materials being suspended at both ends, a rear correction mechanism and a front correction mechanism are added. Based on this, the sawing process is innovatively improved. First, the feed rates of the front and rear correction mechanisms are adjusted according to the design dimensions of the standard Z-shaped material to achieve primary correction sawing. Primary correction effectively solves the problem of low processing accuracy of Z-shaped materials, significantly improving sawing precision. Then, a test sample is obtained based on the primary correction sawing, and the actual error is measured. The feed rates of the front and rear correction mechanisms are then adjusted again based on the actual measured error to achieve secondary correction sawing. This effectively eliminates the adverse effects of systematic errors, enabling high-precision sawing. This high-precision sawing method requires no major modifications to existing sawing equipment and is applicable to sawing Z-shaped materials of different models and sizes, offering greater versatility and practicality with higher sawing precision. Attached Figure Description

[0032] Figure 1 This is a flowchart illustrating the high-precision sawing method for Z-shaped materials according to the present invention.

[0033] Figure 2 A schematic diagram of the sawing equipment structure with added front and rear correction mechanisms for this invention;

[0034] Figure 3 A schematic diagram of the sawing device with added front and rear correction mechanisms according to the present invention from another perspective;

[0035] Figure 4 This is a schematic diagram of the structure of the anterior correction mechanism of the present invention;

[0036] Figure 5 This is a schematic diagram of the structure of the post-correction mechanism of the present invention;

[0037] Figure 6 This is a schematic diagram of the structure of the rear positioning plate of the present invention;

[0038] Figure 7 This is a front view of the Z-shaped material straightening and clamping layout of the present invention;

[0039] Figure 8 This is a top view of the Z-shaped material straightening and clamping layout of the present invention;

[0040] Figure 9 This is a front view schematic diagram showing the dimensions of the standard Z-shaped material, front clamping mechanism, front straightening mechanism, and rear straightening mechanism of the present invention.

[0041] Figure 10 This is a top view schematic diagram showing the dimensions of the standard Z-shaped material, front clamping mechanism, front straightening mechanism, and rear straightening mechanism of the present invention.

[0042] Figure 11 This is a schematic diagram of sawing the Z-shaped material of the present invention with the upper end tilted backward;

[0043] Figure 12 This is a schematic diagram of the corner structure of the test sample group after the upper end of the Z-shaped material of the present invention is sawn backward at an angle;

[0044] Figure 13 This is a schematic diagram of the present invention used to calculate the forward feed variable of the rear correction mechanism;

[0045] Figure 14 This is a schematic diagram of sawing the Z-shaped material of the present invention with the upper end tilted forward;

[0046] Figure 15 This is a schematic diagram of the corner structure of the test sample group after the upper end of the Z-shaped material of the present invention has been sawn at a forward tilt.

[0047] Figure 16 This is a schematic diagram of the present invention used to calculate the backward feed amount variable of the front correction mechanism;

[0048] Figure 17 This is a front view of the Z-shaped material of the present invention;

[0049] Figure 18 This is a structural schematic diagram of an existing thermal break aluminum profile;

[0050] Figure 19 Here is a structural diagram of an existing Z-shaped profile;

[0051] In the diagram, 1. Positioning and clamping mechanism; 101. Worktable; 102. Rear positioning plate; 103. Front clamping mechanism; 1031. Suspension plate; 1032. Clamping slide rail; 1033. Clamping slide plate; 1034. Clamping side plate; 1035. Clamping pressure plate; 1036. Clamping cylinder; 104. Upper clamping mechanism; 1041. Upper clamping guide rail seat; 1042. Upper clamping guide rail; 1043. Upper clamping slide plate; 1044. Upper pressure plate; 1045. Upper clamping cylinder; 2. Front straightening mechanism; 201. Front guide rail; 202. Front slide plate; 203. Front top. 1. Plate, 204. Front servo electric cylinder, 3. Rear correction mechanism, 301. Rear guide rail, 302. Rear sliding plate, 303. Rear driver, 304. Clearance opening, 4. Z-shaped material, 401. Front cantilever, 402. Rear cantilever, 403. Lower end, 404. Upper end, 5. Test sample, 6. Bevel saw head, 7. Frame, 8. Main beam, 9. Beveled surface, 10. Standard beveled surface, 11. Standard Z-shaped material, 12. Thermally broken aluminum profile, 1201. Aluminum component A, 1202. Thermal insulation strip, 1203. Aluminum component B, 13. Z-shaped profile. Detailed Implementation

[0052] To more clearly illustrate the overall concept of the present invention, a detailed description will be provided below with reference to the accompanying drawings and examples.

[0053] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0054] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0055] Furthermore, the terms “upper end,” “lower end,” “front,” and “rear” are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the location of the indicated technical feature.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "provided with," "set up," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] It should be noted that, for ease of understanding of the overall technical solution of this application, the accompanying drawings use typical thermally broken aluminum profiles for illustrative purposes. However, this should not be construed as limiting the Z-type material to thermally broken aluminum profiles. For example, the Z-type material may include, for instance, Figure 18 The Z-shaped profile 13 shown.

[0058] like Figure 1-17 As shown, the high-precision sawing method for Z-shaped materials includes the following steps:

[0059] (1) A front correction mechanism 2 and a rear correction mechanism 3 are added to the positioning and clamping mechanism 1 to work together. The rear correction mechanism 3 acts horizontally at the rear suspension 402 of the Z-shaped material 4, and the front correction mechanism 2 acts horizontally at the front suspension 401 of the Z-shaped material 4. The feed amount of the front correction mechanism 2 and the rear correction mechanism 3 is adjustable, and the feed amount of at least one of them is designed to be precisely adjustable. The posture of the Z-shaped material 4 is adjusted by the cooperation of the front correction mechanism 2 and the rear correction mechanism 3. The posture adjustment here mainly refers to adjusting the front and rear tilt angle of the Z-shaped material.

[0060] (2) First-level correction: Based on the design dimensions of standard Z-shaped material 11 (Z-shaped material designed according to standards), the required feed amount of the front correction mechanism 2 is calculated as follows: The required feed rate for the post-correction mechanism 3 is Then adjust the front correction mechanism 2 to make its feed amount reach After adjustment, the correction mechanism 3 adjusts its feed rate to reach the specified level. The Z-shaped material 4 is straightened by the cooperation of the front straightening mechanism 2 and the rear straightening mechanism 3 (the first-level straightening is carried out according to the standard design of the Z-shaped material. Most Z-shaped materials 4 have processing errors. Taking the thermally broken aluminum profile 12 as an example, the thermally broken aluminum profile 12 is usually composited by a roll forming machine, and the roll forming machine itself has processing errors. Therefore, the processed thermally broken aluminum profile 12 has errors with the design standard). Then, it is clamped by the positioning and clamping mechanism 1 to straighten and clamp the Z-shaped material 4 in the first level. If the Z-shaped material 4 is sawn at 90°, the batch sawing process of the Z-shaped material 4 clamped in the first level can be carried out directly by the 90° sawing head. If the Z-shaped material 4 is beveled (the beveled cut here includes 45° sawing and 135° sawing), the beveled sawing head needs to be used to test the Z-shaped material 4 clamped in the first level to obtain the test sample 5, and then the error of the test sample 5 is measured.

[0061] (3) Measurement error: Compare the beveled surface 9 of the test sample 5 with the standard beveled surface 10 (equivalent to a flat plate). During measurement, align the upper or lower end of the beveled surface 9 with the corresponding end of the standard beveled surface 10. If there is a gap at the other end, measure the gap distance. The maximum allowable value of the gap is set to be ,if Then it can be processed in batches by sawing; if Then correction from lower levels is required;

[0062] (4) Secondary correction, based on Based on the design parameters of the front correction mechanism 2 and the rear correction mechanism 3, the required feed rate variable for the front correction mechanism 2 is calculated as follows: The feed amount variable required for the post-correction mechanism 3 is: Therefore, the required feed amount for the front correction mechanism 2 is: The feed amount required for the rear correction mechanism 3 is Adjust the pre-correction mechanism 2 to make its feed amount reach After adjustment, the correction mechanism 3 adjusts its feed rate to reach the specified level. Then, the Z-shaped material 4 is batch-cut using the bevel saw head 6, or if If so, continue to the next level of correction until... , , In practical applications, the sawing accuracy of Z-shaped materials after secondary correction generally meets the requirements of high-precision sawing. Therefore, in most cases, no inspection is needed after secondary correction, and batch sawing can proceed directly. Of course, to ensure absolute accuracy, the profiles sawn after secondary correction can be inspected and measured to ensure they meet the requirements of high-precision sawing. If the design requirements are not met, the correction process continues until the high-precision sawing requirements are met (in actual use, a second-stage correction is usually sufficient to meet the requirements). To address the characteristic of the Z-shaped material 4 being suspended at the front and rear, a rear correction mechanism 2 and a front correction mechanism 3 are added. Based on this, the sawing process is innovatively improved. First, the feed rates of the front correction mechanism 2 and the rear correction mechanism 3 are adjusted according to the design standards of the Z-shaped material 4 to achieve first-stage correction sawing. This first-stage correction effectively solves the problem of low processing accuracy of the Z-shaped material 4 itself, significantly improving sawing precision. Then, a test sample 5 is obtained based on the first-stage correction sawing. The actual error is measured based on the test sample 5. The feed rates of the front and rear correction mechanisms are then adjusted again based on the actual measured error to achieve second-stage correction, thereby effectively eliminating the adverse effects of systematic errors and achieving a high-precision sawing level. This high-precision sawing method does not require major modifications to existing sawing equipment and can be applied to sawing different models and sizes of Z-shaped materials 4, offering greater versatility and practicality, and higher sawing precision.

[0063] The positioning and clamping mechanism 1 and the sawing head 6 are mounted on the frame 7. A main beam 8 is provided on the frame 7 along the feeding direction of the Z-shaped material 4. The positioning and clamping mechanism 1 includes a worktable 101, a rear positioning plate 102 on the rear side of the worktable 101, and a front clamping mechanism 103 on the front side. An upper pressing mechanism 104 is provided on the main beam 8. This mechanism is used to achieve positioning and clamping of the Z-shaped material.

[0064] The front clamping mechanism 103 includes a suspension plate 1031 mounted on the main beam 8. The suspension plate 1031 is provided with a clamping slide rail 1032. The clamping slide rail 1032 forms a 45° angle with the feeding direction of the Z-shaped material 4. The clamping slide rail 1032 is provided with a clamping slide plate 1033. The clamping slide plate 1033 is provided with clamping side plates 1034 on both sides. The bottom of the clamping side plate 1034 is provided with a clamping pressure plate 1035 (sometimes, in order to avoid scratching the profile, it is necessary to install a nylon block at the front end of the clamping pressure plate 1035. Therefore, the clamping pressure plate 1035 of this application includes a nylon block). The suspension plate 1031 is equipped with a clamping cylinder 1036, which is connected to the clamping slide plate 1033. The upper pressing mechanism 104 includes an upper pressing guide rail seat 1041 disposed on the upper end of the main beam 8. An upper pressing guide rail 1042 is vertically disposed on the upper pressing guide rail seat 1041. An upper pressing slide plate 1043 is disposed on the upper pressing guide rail 1042. An upper pressure plate 1044 is disposed at the lower end of the upper pressing slide plate 1043. An upper pressing cylinder 1045 is disposed at the upper end of the upper pressing guide rail seat 1041, which is connected to the upper pressing slide plate 1043. The specific structures of the front clamping mechanism 103 and the upper pressing mechanism 104 are given. The structural design of the front clamping mechanism 103 retains space for the installation of the front correction mechanism 2, realizing the series connection between the front correction mechanism 2 and the front clamping mechanism 103.

[0065] The frame 7 is symmetrically equipped with two beveling saw heads 6 and two positioning and clamping mechanisms 1. One set of beveling saw heads 6 and positioning and clamping mechanisms 1 is used for 45° sawing, and the other set of beveling saw heads 6 and positioning and clamping mechanisms 1 is used for 135° sawing. This is a commonly used combination for sawing. Of course, a 90° saw head for 90° sawing and its matching positioning and clamping mechanism can also be added between the two beveling saw heads. The saw heads in this application can directly adopt existing technology, such as the profile sawing machine (authorization announcement number CN213998040U) previously applied for by our company.

[0066] The front correction mechanism 2 is mounted on the front clamping mechanism 103 (in series to achieve series mechanical movement), and the rear correction mechanism 3 is mounted on the main beam 8. The main beam 8 has high structural strength and is easy to install.

[0067] The feed rate of the front straightening mechanism 2 is designed to be precisely adjustable. The front straightening mechanism 2 includes a front guide rail 201 mounted on the upper end of the clamping plate 1035. The front guide rail 201 forms a 45° angle with the feed direction of the Z-shaped material 4. A front slide plate 202 is mounted on the front guide rail 201, and a front top plate 203 is mounted on the front slide plate 202. Front servo electric cylinders 204 are mounted on the two clamping side plates 1034. The front servo electric cylinders 204 are connected to the front slide plate 202, and the feed rate of the front straightening mechanism 2 is precisely adjusted through the front servo electric cylinders 204. The specific structure of the front straightening mechanism 2 is given, achieving precise adjustment of the feed rate. In the initial state, the front end of the front top plate 203 can be aligned with the front end of the clamping plate 1035. ) or at fixed intervals ( ).

[0068] The rear correction mechanism 3 includes a rear guide rail 301 mounted on the main beam 8, which is perpendicular to the feeding direction of the Z-shaped material 4. A rear sliding top plate 302 is mounted on the rear guide rail 301 (sometimes, to avoid scratching the profile, a nylon block is installed on the front sliding top plate 302; in this application, the rear sliding top plate 302 includes a nylon block). A clearance opening 304 for the rear sliding top plate 302 to extend is provided on the rear positioning plate 102. A rear actuator 303 is mounted on the main beam 8 and connected to the rear sliding top plate 302. The rear actuator 303 is a cylinder or a servo electric cylinder. The specific structure of the rear correction mechanism 3 is given, enabling the tightening of the rear suspension 402 of the Z-shaped material 4.

[0069] When the rear actuator 303 is a cylinder, the rear sliding top plate 302 always applies a rear pushing force to the rear overhang 402 of the Z-shaped material 4, and the feed amount of the rear correction mechanism 3 will be passively and adaptively adjusted according to the feed amount of the front correction mechanism 2; when the rear actuator 303 is a servo electric cylinder, the feed amount of the rear correction mechanism 3 is precisely adjusted by the servo electric cylinder.

[0070] The height of the front top plate 203 from the workbench 101 is: The initial position of the horizontal distance between the front end of the top plate 203 and the front end of the clamping plate 1035 is... The height of the rear sliding top plate 302 from the worktable 101 is The initial horizontal distance from the front end of the rear sliding top plate 302 to the front end of the rear positioning plate 102 is... ; Set the corresponding height on the front side of the standard Z-shaped material 11 The horizontal distance from the position to the lower front end face of the standard Z-shaped material 11 is The The height corresponding to the rear side of the standard Z-shaped material 11 is set. The horizontal distance from the position to the lower rear end face of the standard Z-shaped material 11 is The .

[0071] The test sample 5 includes two test profiles after straightening and trial cutting. When measuring the error, the upper or lower ends of the two test profiles are aligned, and then the gap at the other end is measured. ,but ;

[0072] When the lower ends of the two test profiles are aligned but there is a gap at the upper ends, forward correction is required. The height of the standard Z-type material in design dimension 4 is known to be... Then we can calculate:

[0073] ;

[0074] ;

[0075] ;

[0076] ;

[0077] When the upper ends of the two test profiles are aligned but there is a gap at the lower ends, they need to be corrected backwards. The following calculations can then be made:

[0078] ;

[0079] .

[0080] Taking the thermally broken aluminum profile 12 as an example, the thermally broken aluminum profile 12 is composed of aluminum component A1201, thermal insulation strip 1202 and aluminum component B1203 connected in sequence. In actual use, the lower end of the thermally broken aluminum profile 12 (aluminum component B1203) contacts the worktable 1, the rear end face of the lower end of the thermally broken aluminum profile 12 rests on the rear positioning plate 102, and the clamping pressure plate 1035 in the front clamping mechanism 103 acts on the front end face of the lower end of the thermally broken aluminum profile 12. Then, the sawing adjustment is carried out according to the above sawing method to achieve high-precision sawing of Z-shaped materials.

[0081] The above specific embodiments should not be construed as limiting the scope of protection of the present invention. For those skilled in the art, any alternative improvements or modifications made to the embodiments of the present invention shall fall within the scope of protection of the present invention.

[0082] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A high-precision sawing method for Z-shaped materials, characterized in that, Includes the following steps: (1) A front correction mechanism and a rear correction mechanism are added to the positioning and clamping mechanism to work together. The rear correction mechanism acts horizontally on the rear suspension of the Z-shaped material, and the front correction mechanism acts horizontally on the front suspension of the Z-shaped material. The feed amount of the front correction mechanism and the rear correction mechanism is adjustable, and the feed amount of at least one of them is designed to be precisely adjustable. The posture of the Z-shaped material is adjusted by the cooperation of the front correction mechanism and the rear correction mechanism. (2) First-stage correction: Based on the design dimensions of the standard Z-shaped material, the required feed amount of the front correction mechanism is calculated as follows: The required feed rate for the post-correction mechanism is Then adjust the front correction mechanism to achieve its feed rate. After adjustment, the correction mechanism ensures that the feed amount reaches [the desired level]. The Z-shaped material is first-stage calibrated by the cooperation of the front and rear calibrating mechanisms, and then clamped by the positioning and clamping mechanism. If the Z-shaped material is to be sawn at 90°, the Z-shaped material can be directly sawn in batches using a 90° sawing head. If the Z-shaped material is to be beveled, a beveled sawing head is needed to first test-cut the Z-shaped material clamped by the first-stage calibration to obtain a test sample, and then the error of the test sample is measured. (3) Measurement error: Compare the beveled surface of the test sample with the standard beveled surface. During measurement, align the upper or lower end of the beveled surface with the corresponding end of the standard beveled surface; there will be a gap at the other end. The measurement gap distance is... The maximum allowable value of the gap is set to be ,if Then batch sawing can be carried out; if If the value is too low, then the next level of correction is required; (4) Secondary correction, based on Based on the design parameters of the front and rear correction mechanisms, the required feed rate variable for the front correction mechanism is calculated as follows: The feed rate variable required by the post-correction mechanism is Therefore, the required feed rate for the front correction mechanism is: The feed amount required by the post-correction mechanism is Adjust the pre-correction mechanism to make its feed amount reach After adjustment, the correction mechanism ensures that the feed amount reaches [the desired level]. Then, a bevel saw head is used to perform batch sawing of the Z-shaped material, or the effect of the secondary straightening is measured and inspected. Then continue to the next level of correction, until... , , .

2. The high-precision sawing method for Z-shaped materials according to claim 1, characterized in that, The positioning and clamping mechanism and the sawing head are mounted on the frame. The frame has a main beam along the Z-shaped material feeding direction. The positioning and clamping mechanism includes a worktable, a rear positioning plate on the rear side of the worktable, a front clamping mechanism on the front side, and an upper pressing mechanism on the main beam.

3. The high-precision sawing method for Z-shaped materials according to claim 2, characterized in that, The front clamping mechanism includes a suspension plate mounted on the main beam, a clamping slide rail on the suspension plate, the clamping slide rail forming a 45° angle with the Z-shaped material feeding direction, a clamping slide plate on the clamping slide rail, clamping side plates on both sides of the clamping slide plate, a clamping pressure plate at the bottom of the clamping side plates, and a clamping cylinder on the suspension plate connected to the clamping slide plate. The upper clamping mechanism includes an upper clamping guide rail seat located at the upper end of the main beam, an upper clamping guide rail vertically mounted on the upper clamping guide rail seat, an upper clamping slide plate mounted on the upper clamping guide rail, an upper pressure plate at the lower end of the upper clamping slide plate, and an upper clamping cylinder at the upper end of the upper clamping guide rail seat connected to the upper clamping slide plate.

4. The high-precision sawing method for Z-shaped materials according to claim 3, characterized in that, The frame is symmetrically equipped with two bevel sawing heads and two positioning and clamping mechanisms. One set of bevel sawing heads and positioning and clamping mechanisms is used for 45° sawing, and the other set of bevel sawing heads and positioning and clamping mechanisms is used for 135° sawing.

5. The high-precision sawing method for Z-shaped materials according to claim 4, characterized in that, The front correction mechanism is mounted on the front clamping mechanism, and the rear correction mechanism is mounted on the main beam.

6. The high-precision sawing method for Z-shaped materials according to claim 3 or 5, characterized in that, The feed amount of the front correction mechanism is designed to be precisely adjustable. The front correction mechanism includes a front guide rail set on the upper end of the clamping plate. The front guide rail is at a 45° angle to the Z-shaped material feeding direction. A front slide plate is provided on the front guide rail. A front top plate is provided on the front slide plate. A front servo electric cylinder is provided on the two clamping side plates. The front servo electric cylinder is connected to the front slide plate. The feed amount of the front correction mechanism is precisely adjusted by the front servo electric cylinder.

7. The high-precision sawing method for Z-shaped materials according to claim 6, characterized in that, The rear correction mechanism includes a rear guide rail mounted on the main beam, the rear guide rail being perpendicular to the Z-shaped material feeding direction, a rear sliding top plate mounted on the rear guide rail, an avoidance opening on the rear positioning plate for the rear sliding top plate to extend out, a rear driver mounted on the main beam, the rear driver being connected to the rear sliding top plate, and the rear driver being a cylinder or a servo electric cylinder.

8. The high-precision sawing method for Z-shaped materials according to claim 7, characterized in that, When the rear actuator uses a cylinder, the rear sliding top plate always applies a rear pushing force to the rear overhang of the Z-shaped material, and the feed amount of the rear correction mechanism is passively and adaptively adjusted according to the feed amount of the front correction mechanism; when the rear actuator uses a servo electric cylinder, the feed amount of the rear correction mechanism is precisely adjusted by the servo electric cylinder.

9. The high-precision sawing method for Z-shaped materials according to claim 8, characterized in that, The height of the front top plate from the workbench is: The initial position of the horizontal distance between the front end of the top plate and the front end of the clamping plate is... The height of the rear sliding top plate from the worktable is The initial position of the horizontal distance from the front end of the rear sliding top plate to the front end of the rear positioning plate is ; Set the corresponding height on the front side of the standard Z-shaped material The horizontal distance from the position to the lower front end face of the standard Z-shaped material is The The corresponding height on the rear side of the standard Z-shaped material is set. The horizontal distance from the position to the lower rear end face of the standard Z-shaped material is The .

10. The high-precision sawing method for Z-shaped materials according to claim 9, characterized in that, The test sample includes two test profiles after primary correction and clamping trial cutting. When measuring error, the upper or lower ends of the two test profiles are aligned, and then the gap at the other end is measured. ,but ; When the lower ends of the two test profiles are aligned but there is a gap at the upper ends, forward correction is required. The height of the standard Z-shaped material is known to be... Then we can calculate: ； ； ； ； When the upper ends of the two test profiles are aligned but there is a gap at the lower ends, they need to be corrected backwards. The following calculations can then be made: ； 。

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