Sawing machine for metal casting machining

Abstract

The invention relates to the technical field of metal casting sawing, and particularly discloses a sawing machine for metal casting machining, which comprises a supporting structure, a fixing device and a protective device, and the supporting structure can support the whole device to operate stably; the fixing device is arranged in one end of the top of the supporting structure, adopts a crossed fixing structure of double first fixing rods driven by a first hydraulic push rod and a second fixing rod driven by a second hydraulic push rod, and is matched with right-angle positioning formed by the supporting platform and a first supporting L-shaped plate; stable clamping can be formed for metal castings in different shapes such as a round shape, a rectangular shape and a special shape, and the limitation that a traditional sawing machine can only fix castings in a single form is effectively overcome; a first contact type pressure sensor is embedded in the first fixing rod, a second contact type pressure sensor is embedded in the second fixing rod, and the sensors are electrically connected with the corresponding hydraulic push rods respectively, so that the contact pressure of the fixing rods and the casting can be detected in real time, and the fixing force of the hydraulic push rods is adaptively adjusted.

Description

Technical Field

[0001] This invention relates to the field of metal casting sawing technology, specifically a metal casting sawing machine. Background Technology

[0002] In the fields of machinery manufacturing, automotive industry, and aerospace, metal castings serve as the basic blanks for core components. The sawing process is a key pre-processing step before the subsequent finishing of metal castings. It is necessary to accurately remove excess material from the castings while ensuring that the castings themselves are not damaged. Therefore, stringent requirements are placed on the stability, versatility, and protective performance of sawing equipment. Currently available metal casting sawing machines generally have significant limitations in their fixing device design. Traditional sawing machines mostly use rigid clamps of a single specification to fix castings. When dealing with irregularly shaped castings or castings of the same type but different specifications, it is necessary to frequently change special clamps or adjust bolt positioning.

[0003] Traditional sawing machines often use a rigid connection between the drive components and the protective devices, which results in serious vibration transmission problems. When sawing metal castings, the saw blade needs to rub against the casting metal material at high speed, which inevitably generates continuous and high-frequency vibration. High-frequency vibration can cause the slag that has adhered to the inner wall of the protective device to fall off. The fallen slag directly impacts the high-speed rotating saw blade under the action of gravity, thereby damaging the saw blade and reducing the sawing quality. There is also a safety hazard of slag splashing into the operating area and burning the operators. Summary of the Invention

[0004] The purpose of this invention is to provide a sawing machine for processing metal castings, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sawing machine for processing metal castings, comprising: a support structure, a fixing device, and a protective device; the support structure is capable of supporting the stable operation of the entire device; the fixing device is disposed at one end of the top of the support structure, and the fixing device is capable of fixing metal castings of different shapes; the protective device is disposed at the other end of the top of the support structure, and the protective device is capable of intercepting molten metal slag according to the sawing depth to improve the sawing quality.

[0006] Preferably, in order to provide support for the fixing device and the protective device, the support structure includes: a support platform, a sawing groove, a moving groove, a support plate, a first support L-shaped plate and a second support L-shaped plate. The support platform is used to support the top connecting component. A sawing groove that runs vertically through the top surface of the support platform is provided at one end near the center. Two horizontal and vertically through moving grooves are provided at one corner of one end of the top surface of the support platform. The support plate is located on the front side of the other end of the top surface of the support platform. The first support L-shaped plate is located on the rear side of the other end of the top surface of the support platform. The second support L-shaped plate is located at the center of one end of the top surface of the support platform.

[0007] Preferably, for fixing the metal casting, the fixing device includes: a first hydraulic push rod, a concave rod, a first fixing rod, a first contact pressure sensor, and reinforcing rods. The first hydraulic push rod is disposed at the rear center of the outer wall of the support plate; the concave rod is disposed at the pushing end of the first hydraulic push rod; there are two first fixing rods, respectively disposed at both ends of the rear side of the outer wall of the concave rod; there are two first contact pressure sensors, respectively embedded in the center of the rear side of the outer wall of the two first fixing rods; there are four reinforcing rods, respectively disposed at the upper and lower ends of the front side of the outer wall of the two first fixing rods, and the other ends of the four reinforcing rods are respectively connected and fixed to the upper and lower corners of the front end of the concave rod.

[0008] Preferably, the fixing device further includes: a second hydraulic push rod, a fixing block, a second fixing rod, and a second contact pressure sensor. The second hydraulic push rod is disposed at the center of the top surface of the inner wall of the first supporting L-shaped plate; the fixing block is disposed at the pushing end of the second hydraulic push rod; the second fixing rod is disposed at the bottom end of the fixing block; and the second contact pressure sensor is embedded in the center of the bottom surface of the outer wall of the second fixing rod.

[0009] Preferably, the two first fixing rods in the horizontal direction and the second fixing rod in the vertical direction form a cross-fixing structure.

[0010] Preferably, the second hydraulic push rod push end drives the second fixed rod to move vertically via the fixed block, and the second contact pressure sensor can provide feedback signals to adjust the thrust of the second hydraulic push rod, so that the second fixed rod and the first fixed rod form a cross-fixed structure, which is compatible with the right-angle positioning surface of the support platform and the first support L-shaped plate to accommodate castings of different shapes.

[0011] Preferably, in order to provide an adhesion point for molten metal slag, the protective device includes: a protective cover, a U-shaped groove, a U-shaped protective plate, a third hydraulic push rod, a sawing machine, and a drive assembly. The protective cover is located at the left end of the top of the second supporting L-shaped plate, and the bottom surface of the protective cover has a U-shaped groove. The U-shaped protective plate is sleeved in the U-shaped groove and can move up and down within the U-shaped groove. The third hydraulic push rod is located at the center of one end of the top surface of the inner wall of the second supporting L-shaped plate. The sawing machine is located at the pushing end of the third hydraulic push rod, and a portion of the sawing end of the sawing machine is located inside the protective cover, with the sawing end of the sawing machine located directly above the sawing groove. The drive assembly is located on the rear side of the outer wall of the sawing machine.

[0012] Preferably, to prevent molten metal slag from splashing, the drive assembly includes: a support rod, a first rack, a rectangular plate, a gear, and a second rack. The support rod is disposed on one side of one end of the outer wall of the sawing machine; the first rack is disposed on the bottom surface of one end of the support rod; the rectangular plate is disposed on the rear top edge of the two moving slots, and the bottom surface of the rectangular plate is connected and fixed to the top surface of the support platform; there are two gears, which are respectively disposed on the top of the front side of the outer wall of the rectangular plate through two bearings, and one gear meshes with the bottom end of the first rack; the second rack is disposed on one end of the bottom surface of the U-shaped protective plate, and the bottom end of the second rack meshes with the other gear; the third hydraulic push rod pushes the sawing machine to move downward, causing the support rod to rotate one gear, thereby driving the other gear to rotate and driving the second rack to move downward, pulling the U-shaped protective plate to move.

[0013] Preferably, the third hydraulic push rod pushes the sawing machine downward, causing the support rod to rotate one gear, which in turn drives another gear to rotate, driving the second rack to move downward and pull the spiral protective plate to move. This ensures that the spiral protective plate moves downward synchronously when the sawing machine moves downward, so that the spiral protective plate always covers the perimeter of the metal casting sawing area.

[0014] Preferably, the third hydraulic push rod of the protective device has shock absorption characteristics, and the drive component is connected to the first rack and the second rack through two gears to form a non-rigid connection. The shock absorption characteristics of the third hydraulic push rod, combined with the non-rigid connection, can prevent the high-frequency vibration of the sawing machine from being transmitted to the protective cover and the U-shaped protective plate, and prevent the molten slag attached to the inner wall of the protective cover from falling off.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The fixing device adopts a cross-fixing structure with a first hydraulic push rod driven by two first fixing rods and a second hydraulic push rod driven by two second fixing rods. Combined with the right-angle positioning formed by the support platform and the first support L-shaped plate, it can form a stable clamp for metal castings of different shapes such as round, rectangular, and irregular shapes. This effectively solves the limitation of traditional sawing machines that can only fix castings of a single shape, and greatly improves the versatility of the equipment. By embedding a first contact pressure sensor in the first fixing rod and a second contact pressure sensor in the second fixing rod, and with the sensors electrically connected to the corresponding hydraulic push rods, the contact pressure between the fixing rod and the casting can be detected in real time, and the fixing force of the hydraulic push rod can be adaptively adjusted.

[0016] 2. The drive assembly abandons the traditional rigid connection method and adopts gear and rack meshing transmission. Combined with the shock absorption characteristics of the third hydraulic push rod itself, it can effectively isolate the continuous vibration generated when the sawing machine is running at high speed. It avoids the vibration from being directly transmitted to the protective cover and the U-shaped protective plate through the rigid structure, and prevents the attached slag from falling off and onto the saw blade surface due to the vibration of the protective device, thus further ensuring the safety of the saw blade and the sawing quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the support structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of the second supporting L-shaped plate of the support structure of the present invention; Figure 4 This is a schematic diagram of the fixing device position structure of the present invention; Figure 5 This is a schematic diagram of the fixing device structure of the present invention; Figure 6 This is an exploded structural diagram of the fixing device of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the protective cover and the second support L-shaped plate of the protective device of the present invention. Figure 8 This is an enlarged structural diagram of the protective device at point A of the present invention; Figure 9 This is a schematic diagram of the internal structure of the protective cover of the protective device of the present invention in cross section; Figure 10 This is a schematic cross-sectional view of the protective cover of the protective device of the present invention; Figure 11 This is a schematic diagram of the protective cover connection component of the protective device of the present invention.

[0018] In the diagram: 1. Support structure; 2. Fixing device; 3. Protective device; 11. Support platform; 12. Sawing groove; 13. Moving groove; 14. Support plate; 15. First support L-shaped plate; 16. Second support L-shaped plate; 21. First hydraulic push rod; 22. Concave rod; 23. First fixing rod; 24. First contact pressure sensor; 25. Reinforcing rod; 26. Second hydraulic push rod; 27. Fixing block; 28. Second fixing rod; 29. ​​Second contact pressure sensor; 31. Protective cover; 32. U-shaped groove; 33. U-shaped protective plate; 34. Third hydraulic push rod; 35. Sawing machine; 36. Support rod; 37. First rack; 38. Rectangular plate; 39. Gear; 310. Second rack. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-11 This invention provides a sawing machine solution for metal casting processing: including a support structure 1, a fixing device 2, and a protective device 3. The support structure 1 can support the stable operation of the entire device and has a certain stability. The fixing device 2 is set inside one end of the top of the support structure 1. The fixing device 2 can fix metal castings of different shapes. The fixing device 2 cooperates with the right angle formed by the bottom of the support platform 11 and the first support L-shaped plate 15, which can fix metal castings of different shapes in a cross manner and has a certain degree of versatility. The protective device 3 is set at the other end of the top of the support structure 1. The protective device 3 can intercept metal slag according to the sawing depth to improve the sawing quality. The protective device 3 can provide an adhesion platform for the vertically upward metal slag generated by the metal casting. The high temperature of the metal slag itself adheres to the inner wall of the top of the protective device 3, preventing the vertically upward slag from not having an adhesion platform and preventing the saw blade from being damaged by its own gravity, thus affecting the sawing quality.

[0021] As a preferred option, further, such as Figure 2 and Figure 3As shown, the support structure 1 includes: a support platform 11, a sawing groove 12, a moving groove 13, a support plate 14, a first support L-shaped plate 15, and a second support L-shaped plate 16. The support platform 11 is used to support the top connecting component. The four support points at the bottom of the support platform 11 provide stability. A vertically penetrating sawing groove 12 is provided at one end of the top surface of the support platform 11 near the center. The sawing groove 12 provides a certain operating space for the saw blade of the sawing machine 35. Two horizontally penetrating moving grooves 13 are provided at one corner of one end of the top surface of the support platform 11. The movable slot 13 provides operating space for the first rack 37 and the second rack 310; the support plate 14 is located on the front side of the other end of the top surface of the support platform 11, and the support plate 14 provides a support point for the first hydraulic push rod 21; the first support L-shaped plate 15 is located on the rear side of the other end of the top surface of the support platform 11, and the first support L-shaped plate 15 provides a support point for the second hydraulic push rod 26; the second support L-shaped plate 16 is located at the center of one end of the top surface of the support platform 11, and the second support L-shaped plate 16 provides a support point for the protective cover 31 and the third hydraulic push rod 34.

[0022] As a preferred option, further, such as Figure 4 , Figure 5 and Figure 6As shown, the fixing device 2 includes: a first hydraulic push rod 21, a concave rod 22, a first fixing rod 23, a first contact pressure sensor 24, a reinforcing rod 25, a second hydraulic push rod 26, a fixing block 27, a second fixing rod 28, and a second contact pressure sensor 29. The first hydraulic push rod 21 is located at the rear center of the outer wall of the support plate 14; the concave rod 22 is located at the pushing end of the first hydraulic push rod 21; there are two first fixing rods 23, which are respectively located at both ends of the rear side of the outer wall of the concave rod 22; there are two first contact pressure sensors 24, which are respectively embedded in the center of the rear side of the outer wall of the two first fixing rods 23, and the two first contact pressure sensors 24 are electrically connected to the first hydraulic push rod 21; there are four reinforcing rods 25, which are respectively located at the upper and lower ends of the front side of the outer wall of the two first fixing rods 23, and the other ends of the four reinforcing rods 25 are respectively located at the upper and lower ends of the front side of the outer wall of the two first fixing rods 23. The first hydraulic push rod 21 and the second hydraulic push rod 26 are connected and fixed to the upper and lower four corners of the front end of the concave rod 22; the second hydraulic push rod 26 is set at the center of the top surface of the inner wall of the first support L-shaped plate 15. The first hydraulic push rod 21 and the second hydraulic push rod 26 can generate high-frequency vibration during the sawing process of the sawing machine 35 to fix the metal casting more accurately; the fixing block 27 is set at the pushing end of the second hydraulic push rod 26, and the fixing block 27 increases the operating stroke of the second fixing rod 28; the second fixing rod 28 is set at the bottom end of the fixing block 27. The two first fixing rods and the second fixing rod 28 are used to fix the metal casting in a cross manner; the second contact pressure sensor 29 is embedded in the center of the bottom surface of the outer wall of the second fixing rod 28. The second contact pressure sensor 29 is electrically connected to the second hydraulic push rod 26 to ensure that the two first fixing rods and the second fixing rod 28 can adaptively adjust the fixing pressure for metal castings of different shapes.

[0023] More specifically, the two horizontal first fixing rods 23 and the vertical second fixing rod 28 form a cross-fixing structure, which, together with the right-angle positioning surface formed by the support platform 11 and the first support L-shaped plate 15, can be adapted to metal castings of different shapes such as round, rectangular, and irregular shapes. At the same time, based on the design of the first contact pressure sensor 24 being electrically connected to the first hydraulic push rod 21 and the second contact pressure sensor 29 being electrically connected to the second hydraulic push rod 26, the fixing pressure can be adaptively adjusted. This avoids the casting from shifting due to insufficient pressure, and also prevents the casting from being damaged by excessive pressure. Furthermore, it can adapt to high-frequency vibration scenarios during the sawing process, ensuring the stability of the fixing.

[0024] As a preferred option, further, such as Figure 7 , Figure 8 , Figure 9 , Figure 10 and Figure 11As shown, the protective device 3 includes: a protective cover 31, a U-shaped groove 32, a U-shaped protective plate 33, a third hydraulic push rod 34, a sawing machine 35, and a drive assembly. The protective cover 31 is located at the left end of the top of the second support L-shaped plate 16. The bottom surface of the protective cover 31 has a U-shaped groove 32. The inner wall of the protective cover 31 provides an adhesion platform for molten metal slag and provides a certain degree of protection for workers and surrounding equipment during the sawing process. The U-shaped protective plate 33 is fitted into the U-shaped groove 32 and can move up and down within the U-shaped groove 32. The U-shaped protective plate 33 is used to intercept the molten metal slag generated around the metal casting during sawing; the third hydraulic push rod 34 is set at the center of one end of the top surface of the inner wall of the second support L-shaped plate 16, and the third hydraulic push rod 34 has higher precision to drive the sawing machine 35 to perform sawing; the sawing machine 35 is set at the pushing end of the third hydraulic push rod 34, a part of the sawing end of the sawing machine 35 is set inside the protective cover 31, and the sawing end of the sawing machine 35 is located directly above the sawing groove 12. The sawing machine 35 is used to saw the metal casting; the drive assembly is set on the rear side of the outer wall of the sawing machine 35.

[0025] More specifically, the third hydraulic push rod 34 has high-precision driving performance, which can accurately control the downward depth and speed of the sawing machine 35. Combined with the design of the sawing end and the sawing groove 12 facing each other, it ensures the stability of the sawing process and improves the processing accuracy. The protective cover 31 and the spiral protective plate 33 form a dual protection structure of "top attachment and four-sided interception", which can cover all directions of molten slag splashing and avoid molten slag damaging the saw blade or burning the operator and damaging the surrounding equipment. The spiral protective plate 33 is designed to move along the spiral groove 32 to ensure that it does not deviate when it is adjusted synchronously with the sawing machine 35, and always maintains complete coverage of the sawing area, with high protection reliability.

[0026] As a preferred option, further, such as Figure 8 and Figure 11As shown, the drive assembly includes: a support rod 36, a first rack 37, a rectangular plate 38, a gear 39, and a second rack 310. The support rod 36 is located on one side of the outer wall of the sawing machine 35; the first rack 37 is located on the bottom surface of one end of the support rod 36; the rectangular plate 38 is located at the rear top edge of the two moving slots 13, and the bottom surface of the rectangular plate 38 is connected and fixed to the top surface of the support platform 11; there are two gears 39, which are respectively located at the top of the front side of the outer wall of the rectangular plate 38 through two bearings, and the two gears 39 can rotate through the two bearings respectively. One gear 39 meshes with the bottom end of the first rack 37; the second rack 310 is located at one end of the bottom surface of the spiral guard plate 33, and the second rack 310... The bottom end meshes with another gear 39. The third hydraulic push rod 34 pushes the sawing machine 35 to move downward, driving the support rod 36 to rotate one gear 39, thereby driving the other gear 39 to rotate and driving the second rack 310 to move downward, pulling the spiral protective plate 33 to move. The design of this drive assembly is that the sawing machine 35 will generate continuous vibration when running at high speed. If a rigid connection is used, the vibration will be directly transmitted to the protective cover 31. The third hydraulic push rod 34 itself has a shock absorption effect and reduces the vibration of the protective cover 31 and the spiral protective plate 33, preventing high-frequency vibration molten metal slag from falling onto the saw blade surface. In addition, this drive assembly can make the spiral protective plate 33 and the protective cover 31 rise and fall synchronously, always covering the top range of molten slag splash.

[0027] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0028] The support structure 1 serves as the load-bearing foundation for the entire sawing machine 35, providing a stable installation and operating platform for the fixing device 2 and the protective device 3. The support platform 11 ensures the overall stability of the equipment, and the sawing groove 12 on its top surface provides vertical sawing space for the saw blade of the sawing machine 35, preventing collision damage between the saw blade and the support platform 11. The moving groove 13 provides a horizontal channel for the movement of the first rack 37 and the second rack 310 of the drive component in the protective device 3, ensuring smooth transmission. The support plate 14, the first support L-shaped plate 15, and the second support L-shaped plate 16 provide precise installation and positioning for the first hydraulic push rod 21 and the second hydraulic push rod 26 of the fixing device 2, and the protective cover 31 and the third hydraulic push rod 34 of the protective device 3, respectively, so that each functional component can work stably in the preset position.

[0029] The fixing device 2 adopts a "cross-clamping and pressure adaptive adjustment" mechanism to achieve stable fixing of metal castings of different shapes. During operation, the metal casting is first placed on the support platform 11, and the part of the casting to be sawed is aligned with the sawing groove 12. Then, the first hydraulic push rod 21 is activated, and its pushing end drives the concave rod 22 and the first fixing rods 23 on both sides to move horizontally until the first fixing rod 23 contacts the side wall of the casting. The first contact pressure sensor 24 embedded in the first fixing rod 23 detects the contact pressure in real time and feeds the signal back to the control system. If the pressure does not reach the preset value, the first hydraulic push rod 21 continues to push until the pressure meets the requirements for stable clamping. At the same time, the four reinforcing rods 25 enhance the structural strength of the first fixing rod 23 to prevent deformation during clamping. Simultaneously, the second hydraulic push rod 26 on the first support L-shaped plate 15 is activated. Its pushing end drives the second fixed rod 28 to move vertically downward through the fixed block 27 until the second fixed rod 28 contacts the top surface of the casting. The second contact pressure sensor 29 embedded in the second fixed rod 28 synchronously detects the vertical contact pressure and feeds back the signal to adjust the thrust of the second hydraulic push rod 26. Finally, the horizontal clamping of the first fixed rod 23 and the vertical clamping of the second fixed rod 28 form a cross-fixing structure. Together with the right-angle positioning surface formed by the support platform 11 and the first support L-shaped plate 15, it can be adapted to metal castings of different shapes such as round, rectangular, and irregular shapes. Moreover, through pressure adaptive adjustment, it avoids the casting from shifting during sawing due to insufficient pressure or damaging the casting due to excessive pressure.

[0030] The protective device 3, through its design of "molten slag adhesion, synchronous protection and vibration isolation", effectively intercepts molten slag during the sawing process, ensuring sawing quality and operational safety. Its core lies in the synchronous movement and vibration isolation between the protective device 3 and the sawing machine 35, which is specifically achieved through the drive components.

[0031] After the fixing device 2 completes the fixing of the casting, the third hydraulic push rod 34 on the second support L-shaped plate 16 is activated. Its pushing end drives the sawing machine 35 to move vertically downward. The sawing end of the sawing machine 35 is aligned with the part of the casting to be sawed and the sawing operation begins. During the sawing process, the high-temperature molten metal slag will splash to all sides. The protective cover 31 forms a closed protective space. Its inner wall can use the high temperature characteristics of the molten slag to achieve slag adhesion and prevent the vertically upward splashing molten slag from falling freely. At the same time, when the sawing machine 35 moves down, the support rod 36 on the rear side of its outer wall moves down with it, driving the first toothed rack 37 at the bottom to move down synchronously. During the downward movement of the first rack 37, it meshes with a gear 39 on the rectangular plate 38, causing the gear 39 to rotate. Since the two gears 39 are coaxially mounted on the rectangular plate 38 via bearings, the rotation of the first gear 39 will drive the second gear 39 to rotate synchronously. The second gear 39 meshes with the second rack 310 at the bottom of the spiral protective plate 33, thereby causing the second rack 310 to move vertically downward, so that the spiral protective plate 33 moves synchronously downward along the spiral groove 32 on the bottom surface of the protective cover 31. This transmission process ensures that the spiral protective plate 33 moves at the same downward speed as the sawing machine 35, always covering the perimeter of the casting sawing area, intercepting horizontally splashing slag, and preventing slag from overflowing from the protective gap after the sawing depth increases. When the sawing machine 35 performs high-speed sawing, it generates high-frequency vibrations. In traditional equipment, the rigid connection between the protective device 3 and the drive component causes the vibration to be transmitted to the protective device, causing the attached molten slag to fall off and impact the saw blade, affecting the sawing quality. In this device, the third hydraulic push rod 34 itself has shock absorption characteristics, and the drive component uses two gears 39 to mesh with the first rack 37 and the second rack 310 respectively, rather than being rigidly connected. The vibration is only transmitted to the first rack 37, the second rack 310, and the two gears 39, and cannot be effectively transmitted to the protective cover 31 and the U-shaped protective plate 33, thereby avoiding the molten slag from falling off due to the vibration of the protective device and ensuring the safety of the saw blade and the sawing accuracy.

[0032] After the sawing reaches the preset depth, the sawing machine 35 resets, the drive component drives the spiral guard plate 33 to rise, the fixing device 2 loosens the casting, the processed casting is taken out, the equipment returns to the initial state, and waits for the next operation.

[0033] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sawing machine for processing metal castings, characterized in that, include: The supporting structure (1) can support the smooth operation of the entire device; A fixing device (2) is provided at one end of the top of the support structure (1), and the fixing device (2) can fix metal castings of different shapes; The protective device (3) is located at the other end of the top of the support structure (1). The protective device (3) can intercept the molten metal slag according to the depth of the sawing to improve the sawing quality. The supporting structure (1) includes: A support platform (11) is used to support the top connecting component. A sawing groove (12) that runs vertically through the top surface of the support platform (11) is provided at one end near the center. Two horizontal and vertically connected moving grooves (13) are provided at one corner of the top surface of the support platform (11). A support plate (14) is disposed on the front side of the other end of the top surface of the support platform (11); The first support L-shaped plate (15) is disposed on the rear side of the other end of the top surface of the support platform (11); The second support L-shaped plate (16) is located at the center of one end of the top surface of the support platform (11); The fixing device (2) includes: The first hydraulic push rod (21) is located at the rear center of the outer wall of the support plate (14); A concave rod (22) is disposed at the pushing end of the first hydraulic push rod (21); There are two first fixing rods (23), which are respectively set at both ends of the rear side of the outer wall of the concave rod (22); There are two first contact pressure sensors (24), which are embedded in the center of the rear side of the outer wall of the two first fixing rods (23); Four reinforcing rods (25) are respectively set at the upper and lower ends of the front side of the outer wall of the two first fixing rods (23), and the other ends of the four reinforcing rods (25) are respectively connected and fixed to the upper and lower four corners of the front end of the concave rod (22); The second hydraulic push rod (26) is located at the center of the top surface of the inner wall of the first support L-shaped plate (15); A fixing block (27) is disposed at the pushing end of the second hydraulic push rod (26); The second fixing rod (28) is disposed at the bottom end of the fixing block (27); The second contact pressure sensor (29) is embedded in the center of the bottom surface of the outer wall of the second fixing rod (28).

2. A sawing machine for processing metal castings according to claim 1, characterized in that, A cross-fixing structure is formed by the two first fixing rods (23) in the horizontal direction and the second fixing rod (28) in the vertical direction.

3. A sawing machine for processing metal castings according to claim 2, characterized in that, The second hydraulic push rod (26) pushes the second fixed rod (28) vertically through the fixed block (27). The second contact pressure sensor (29) can provide feedback signals to adjust the thrust of the second hydraulic push rod (26), so that the second fixed rod (28) and the first fixed rod (23) form a cross-fixed structure, which is compatible with the right-angle positioning surface of the support platform (11) and the first support L-shaped plate (15) to adapt to castings of different shapes.

4. A sawing machine for processing metal castings according to claim 3, characterized in that, The protective device (3) includes: A protective cover (31) is provided at the left end of the top of the second support L-shaped plate (16), and a spiral groove (32) is provided on the bottom surface of the protective cover (31). A spiral-shaped protective plate (33) is fitted into the spiral-shaped groove (32), and the spiral-shaped protective plate (33) can move up and down within the spiral-shaped groove (32). The third hydraulic push rod (34) is located at the center of one end of the top surface of the inner wall of the second support L-shaped plate (16); The sawing machine (35) is located at the pushing end of the third hydraulic push rod (34). A portion of the sawing end of the sawing machine (35) is located inside the protective cover (31), and the sawing end of the sawing machine (35) is located directly above the sawing groove (12). The drive assembly is located on the rear side of the outer wall of the saw (35).

5. A sawing machine for processing metal castings according to claim 4, characterized in that, The driving component includes: A support rod (36) is provided on one side of one end of the outer wall of the sawing machine (35); The first rack (37) is disposed on the bottom surface of one end of the support rod (36); A rectangular plate (38) is disposed at the rear top edge of the two moving slots (13), and the bottom surface of the rectangular plate (38) is connected and fixed to the top surface of the support platform (11). Two gears (39) are respectively set at the top of the front side of the outer wall of the rectangular plate (38) through two bearings. One of the gears (39) meshes with the bottom end of the first rack (37). The second rack (310) is disposed at one end of the bottom surface of the spiral guard plate (33), and the bottom end of the second rack (310) meshes with another gear (39).

6. A sawing machine for processing metal castings according to claim 5, characterized in that, The third hydraulic push rod (34) pushes the sawing machine (35) to move downward, causing the support rod (36) to rotate one gear (39), thereby driving another gear (39) to rotate and drive the second rack (310) to move downward, pulling the spiral protective plate (33) to move, so that when the sawing machine (35) moves downward, the spiral protective plate (33) moves downward synchronously, so that the spiral protective plate (33) always covers the perimeter of the metal casting sawing area.

7. A sawing machine for processing metal castings according to claim 6, characterized in that, The third hydraulic push rod (34) of the protective device (3) has shock absorption characteristics, and the drive component is connected to the first rack (37) and the second rack (310) respectively through two gears (39) to form a non-rigid connection. The shock absorption characteristics of the third hydraulic push rod (34) combined with the non-rigid connection can prevent the high-frequency vibration of the sawing machine (35) from being transmitted to the protective cover (31) and the spiral protective plate (33), and prevent the slag attached to the inner wall of the protective cover (31) from falling off.

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