Multifunctional integrated production equipment for cylinder liner processing

Abstract

The application discloses a kind of multifunctional integrated production equipment of cylinder sleeve processing, including feeding table and push air cylinder, the rear side of feeding table is equipped with machine tool, the left side of feeding table is equipped with the storage tank of upper opening, the bottom of storage tank is set to be high right low, material ejecting structure is set to right in storage tank, material ejecting structure includes lifting cylinder located below storage tank and top block located in storage tank, the top of top block is set to be high right low, the top of feeding table is V-shaped slope with middle part concave downwards;The front side of machine tool is equipped with cylinder sleeve power transmission assembly for driving blank rotation, the rear side of cylinder sleeve power transmission assembly is equipped with external machining cutter, unloading assembly and boring cutter sequentially from front to back, boring cutter is located at the back of cylinder sleeve power transmission assembly, and external machining cutter and unloading assembly are all located at the back of cylinder sleeve power transmission assembly. It can bore hole, process external circle, chamfer, tamping surface and cut simultaneously, improve work efficiency.

Description

Technical Field

[0001] This invention relates to the field of machine tool technology, and specifically to a multi-functional integrated production equipment for cylinder liner machining. Background Technology

[0002] Cylinder liner, short for cylinder sleeve, is installed inside the cylinder barrel of the cylinder block and, together with the piston and cylinder head, forms the combustion chamber. The production process of cylinder liners involves several machining steps, including cutting, boring the inner hole, grinding the outer diameter, chamfering, and countersinking. Traditional machine tools can only perform one machining step at a time; for example, a cutting machine can only cut. The machine needs to be clamped separately before each subsequent step, which is time-consuming and labor-intensive. Furthermore, deviations during clamping can lead to errors during boring the inner hole and grinding the outer diameter, failing to meet machining requirements. Therefore, there is an urgent need for production equipment capable of performing multiple steps simultaneously. Summary of the Invention

[0003] This invention aims to solve the technical problems existing in the prior art, and innovatively proposes a multi-functional integrated production equipment for cylinder liner processing, which can simultaneously perform boring of inner holes, machining of outer circles, chamfering, countersinking and cutting, thereby improving work efficiency.

[0004] To achieve the above-mentioned objectives of this invention, this invention provides a multi-functional integrated production equipment for cylinder liner processing, including a loading platform. A pushing cylinder is provided on the front side of the loading platform, capable of intermittently pushing a tubular blank backward. A machine tool is provided on the rear side of the loading platform. The top surface of the loading platform is a V-shaped inclined surface. A loading mechanism capable of lifting the tubular blank onto the loading platform is provided on the left side of the loading platform. A cylinder liner power transmission assembly for rotating the blank is provided on the front side of the machine tool. An external machining tool, an unloading assembly, and a boring tool are arranged sequentially from front to back on the rear side of the cylinder liner power transmission assembly. The boring tool is located directly behind the cylinder liner power transmission assembly. The external machining tool and the unloading assembly are located on the right rear and left rear of the cylinder liner power transmission assembly, respectively. The unloading assembly is slidably connected to the machine tool and is moved to face the receiving sleeve by a second lateral moving mechanism.

[0005] The cylinder liner power transmission assembly includes a spindle box, on which a receiving sleeve for receiving a blank and a rotating sleeve fixedly connected are fixedly connected. The blank is pushed into the receiving sleeve by the pushing cylinder. The rotating sleeve is rotatably connected to the spindle box through a rotating bearing. The rear end of the rotating sleeve extends out of the spindle box and is fixedly connected to a three-jaw power chuck located on the rear side of the receiving sleeve. The three-jaw power chuck is used to clamp the tubular blank in the receiving sleeve. The rotating sleeve is connected to a motor through a transmission mechanism, and the motor drives the rotating sleeve and the three-jaw power chuck clamping the blank to rotate.

[0006] The external machining tool includes a rotatable electric tool holder, on which a cutting blade and an external turning blade are arranged circumferentially. The electric tool holder is slidably connected to the machine tool and equipped with a first lateral moving mechanism. The first lateral moving mechanism drives the cutting blade or external turning blade to approach the workpiece for machining. The electric tool holder is also equipped with a front-back moving mechanism that drives it to move back and forth. The front-back moving mechanism is used to drive the external turning blade to move back and forth when it is facing the workpiece, thereby realizing the trimming of the outer circle of the workpiece in the axial direction.

[0007] The unloading assembly has an expansion sleeve on its front side for extending into the tubular billet. The expansion sleeve is covered by a compression ring, and a spring connects the compression ring and the expansion sleeve. The unloading assembly is also equipped with a front-to-back moving mechanism, which drives the expansion sleeve to extend into the billet and compress the spring. An expansion mandrel is fitted inside the expansion sleeve. The unloading assembly has a tensioning cylinder on its rear side for pushing the expansion mandrel to slide. The front end of the expansion mandrel is located outside the expansion sleeve and is a frustum-shaped cylinder with a larger front end and a smaller rear end. The diameter of the front end of the expansion mandrel is larger than the inner diameter of the expansion sleeve. The front end of the expansion sleeve has several notches along its circumference, so that when the expansion mandrel moves backward, the front end of the expansion sleeve can open outward, thereby pressing against the inner side of the billet for fixation.

[0008] The front side of the boring tool is provided with a tool holder that is directly opposite to the sleeve. The tool holder is provided with a boring tool for boring the blank tube, a chamfering tool for chamfering the blank end, and a countersinking tool for countersinking the blank end, arranged sequentially from front to back. The boring tool is slidably connected to the machine tool through a boring sliding base and is equipped with a boring pushing mechanism for pushing it to move back and forth.

[0009] In the above scheme: the countersinking cutter and the chamfering cutter are located on both sides of the tool holder, the cutting edge of the countersinking cutter is set facing forward, and its cutting edge is perpendicular to the axis of the tool holder;

[0010] The boring tools are multiple and axially arranged, all positioned at the front end of the tool holder and forming acute-angled triangles. The outer edge of any one boring tool forms an acute angle with the tool holder's axis, and its tip extending beyond the tool holder is the rear tip. The front edges of the remaining boring tools are perpendicular to the tool holder's axis, and their front cutting edges extend beyond the tool holder. This creates a front-to-back deviation between the machining tips of these boring tools and the others, resulting in a higher machining accuracy for these tools. This makes the machining tip of these boring tools a finishing edge. The finishing edge allows for fine finishing of the inner walls machined by the other boring tools, improving processing efficiency.

[0011] In the above scheme: all boring tools are mounted on the tool holder via a first mounting bracket. The tool holder has mounting protrusions corresponding to the boring tools. Each first mounting bracket has a strip-shaped hole extending forward and backward. The first mounting bracket is fixed to the mounting protrusion by mounting bolts passing through the strip-shaped hole. The axial adjustment of the boring tool is achieved through the strip-shaped hole, thereby adjusting the forward and backward position of the boring tool. Each first mounting bracket on the tool holder is provided with an ejector screw. The ejector screw pushes the front end of the first mounting bracket outward toward the tool holder, thereby adjusting the boring tool radially.

[0012] Both the chamfering cutter and the countersinking cutter are mounted on a tool holder via a second mounting bracket. The tool holder has mounting holes extending laterally corresponding to the second mounting bracket. The second mounting bracket is inserted into the mounting hole of the tool holder. The tool holder also has threaded holes perpendicular to and communicating with the mounting holes. The second mounting bracket is secured within the mounting holes by a bolt threaded into the threaded hole. This facilitates radial and axial adjustment of the boring cutter, chamfering cutter, and countersinking cutter.

[0013] In the above scheme: the included acute angle is 10~20°;

[0014] The tool holder is equipped with cooling channels extending forward and backward. The rear end of the cooling channels extends beyond the spindle of the tool holder, and the front end of the cooling channels is equipped with cooling supports for each boring tool. The cooling channels and cooling supports can cool the boring tools and reduce the temperature during boring operations.

[0015] In the above solution: a sliding table is slidably connected to the machine tool, and the external machining tool and unloading assembly are both mounted on this sliding table and share a single forward and backward moving mechanism. This mechanism pushes the sliding table forward and backward, thereby enabling the external machining tool and unloading assembly to move back and forth. Sharing a single sliding table saves material, and the forward and backward moving mechanism simultaneously pushes the unloading assembly and the external machining tool forward towards the workpiece. This ensures that the unloading assembly is brought closer to the part to be cut, and that the cutting tool is moved precisely to the cutting position, enabling stable cutting.

[0016] In the above scheme: the forward and backward moving mechanism, the boring pushing mechanism and the first lateral moving mechanism are all lead screw and nut mechanisms, and the second lateral moving mechanism is a cylinder;

[0017] The machine tool has a groove extending forward and backward on its top. Both the boring push mechanism and the forward and backward movement mechanism are fixed within this groove. The machine tool is equipped with slide rails corresponding to the slide plate, boring sliding base, second sliding base, and first sliding base. The provided lead screw and nut mechanism allows for stable adjustment of the movement distance, while the provided cylinder enables rapid movement. The materials are simple and readily available, facilitating procurement. The fact that both the boring push mechanism and the forward and backward movement mechanism are housed within the groove allows for efficient use of space and a more compact structure.

[0018] In the above scheme: the feeding mechanism includes a storage box with an upper opening located on the left side of the feeding platform. The bottom of the storage box is inclined from left to right. A material ejection structure is provided on the right side inside the storage box. The material ejection structure includes a lifting cylinder located below the storage box and a top block located inside the storage box. The top surface of the top block is an inclined surface with the left side higher than the right side. The tubular billet is ejected along the inner right wall of the storage box by the top block. A partition is vertically provided inside the storage box on the left side of the material ejection structure. The partition divides the storage box into a storage area and a discharge area. A gap of less than twice the diameter of the steel sleeve is left between the partition and the bottom of the storage box. The side wall of the discharge area is lower than the side wall of the storage area, and the highest point of the feeding platform is not higher than the top of the right side wall of the discharge area. The material ejection structure can eject the tubular billet along the inner right side of the storage box. The side wall of the discharge area is lower than the side wall of the storage area, which makes it easier for workers to observe whether there are obvious defects in the billet in the discharge area, so as to remove them as early as possible and improve processing efficiency. At the same time, reducing the height of the side wall can also reduce the ejection distance of the material ejection structure and improve ejection efficiency. Correspondingly, the highest point of the loading platform should be flush with the top of the right side wall of the discharge area.

[0019] In the above scheme: two top blocks are arranged at an interval, one on the left and one on the right. The length of the top block on the left is shorter than the length of the top block on the right, and the distance between the two top blocks is greater than the diameter of the steel sleeve. The height of the top block on the left is lower than that of the top block on the right. A connecting block is fixed inside the storage box between the two top blocks. The top surface of the connecting block is also a sloped surface with the left side higher than the right side, and the left and right sides of the connecting block are in contact with the two top blocks respectively. The connecting block is higher than the height of the top block on the right when it is at its lowest position. The top block on the right is in close contact with the inner right side wall of the storage box. Each of the two top blocks pushes one billet, cutting a section of the path into two sections, saving time. After a billet is pre-pushed out, it stays on the connecting block for a period of time, allowing workers to inspect it in advance. If there are obvious defects, it can be removed.

[0020] In the above scheme: the top surface of the loading platform is recessed in the middle to accommodate the tubular blank. The positioning groove extends back and forth, which can limit the movement range of the tubular blank so that it eventually falls into the positioning groove.

[0021] In the above scheme: the extended end of the pushing cylinder is provided with a frustum-shaped pusher that is larger at the front and smaller at the back. The diameter of the rear end of the pusher is smaller than the inner diameter of the billet, and the diameter of the front end of the pusher is larger than the inner diameter of the billet and smaller than the inner diameter of the receiving sleeve, so that the pusher can extend into the receiving sleeve to continue pushing the billet.

[0022] In summary, due to the adoption of the above technical solutions, the beneficial effects of this invention are: it enables boring of inner holes, machining of outer diameters, chamfering, countersinking, and cutting on the same machine tool without the need to switch to other machine tools, reducing clamping time, improving work efficiency, and avoiding errors caused by multiple clamping operations, thus improving machining accuracy and meeting machining requirements. The designed loading platform and material ejection structure can orderly move materials to designated positions for automatic loading, improving automation, saving labor workload, and reducing labor costs. Furthermore, the external machining tools and unloading components are located on the left and right sides of the sleeve receiving area, respectively, with a reasonable left-right layout, compact structure, and space-saving design. The unloading components can stably grip the cut blanks, preventing movement of the blanks during cutting and avoiding errors during cutting. Attached Figure Description

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a perspective view of the present invention;

[0025] Figure 2 This is a top view of the storage box and loading platform of the present invention;

[0026] Figure 3 yes Figure 2 Sectional view at point AA;

[0027] Figure 4 This is a perspective view of the machine tool, cylinder liner power transmission assembly, external machining tool, unloading assembly, and boring tool of the present invention;

[0028] Figure 5 This is a perspective view of the cylinder liner power transmission assembly of the present invention;

[0029] Figure 6 This is a cross-sectional view of the cylinder liner power transmission assembly of the present invention;

[0030] Figure 7 This is a perspective view of the external machining tool of the present invention;

[0031] Figure 8 This is a perspective view of the boring tool of the present invention;

[0032] Figure 9 This is a perspective view of the unloading assembly of the present invention;

[0033] Figure 10 This is a cross-sectional view of the unloading assembly of the present invention;

[0034] Figure 11 This is a schematic diagram of the machine tool of the present invention;

[0035] Figure 12 This is a schematic diagram of the tool holder of the present invention;

[0036] Figure 13 This is a schematic diagram of the tool holder of the present invention;

[0037] Figure 14 This is a schematic diagram of the tool holder of the present invention;

[0038] Figure 15 This is a cross-sectional view of the tool holder of the present invention. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] like Figures 1-15 As shown, a multi-functional integrated production equipment for cylinder liner processing includes a loading platform 1. A pushing cylinder 1a is provided on the front side of the loading platform 1, which can push intermittently. A machine tool 8 is provided on the rear side of the loading platform 1. A storage box 2 with an upper opening is provided on the left side of the loading platform 1. The bottom of the storage box 2 is set with the left side higher than the right side. A material ejection structure 3 is provided on the right side inside the storage box 2. The material ejection structure 3 includes a lifting cylinder 3b located below the storage box 2 and a top block 3a located inside the storage box 2. The top of the top block 3a is set with the left side higher than the right side. The tubular blank is ejected along the right inner side wall of the storage box 2 through the top block 3a. The top of the loading platform 1 is a V-shaped inclined surface with the middle concave downward.

[0041] The front side of the machine tool 8 is provided with a cylinder liner power transmission assembly 4 for driving the billet to rotate. The rear side of the cylinder liner power transmission assembly 4 is provided with an external machining tool 5, an unloading assembly 7 and a boring tool 6 arranged sequentially from front to back. The boring tool 6 is located directly behind the cylinder liner power transmission assembly 4, and the external machining tool 5 and the unloading assembly 7 are both located to the side and rear of the cylinder liner power transmission assembly 4.

[0042] The cylinder liner power transmission assembly 4 includes a spindle box 4b, on which a receiving sleeve 4a for receiving a blank and a rotating sleeve 4f outside the receiving sleeve 4a are fixedly connected. The blank is pushed into the receiving sleeve 4a by pushing the cylinder 1a. The rotating sleeve 4f is rotatably connected to the spindle box 4b through a rotating bearing. The rear end of the rotating sleeve 4f extends out of the spindle box 4b and is fixedly connected to a three-jaw power chuck 4c located behind the receiving sleeve 4a. The three-jaw power chuck 4c is used to clamp the blank in the receiving sleeve 4a. The rotating sleeve 4f is connected to a motor 4d through a transmission mechanism 4e. The motor 4d drives the three-jaw power chuck 4c that clamps the blank to rotate.

[0043] The external machining tool 5 includes an electric tool holder 5a. A cutting blade 5c and an external circular blade 5b are arranged on the electric tool holder 5a along its circumference. The electric tool holder 5a is equipped with a rotary motor. By rotating the electric tool holder 5a through the rotary motor, the cutting blade 5c or the external circular blade 5b is switched to face the workpiece.

[0044] The electric tool holder 5a is provided with a slide plate 8a below it. The electric tool holder 5a is laterally slidably connected to the slide plate 8a through the first sliding base 5e. The electric tool holder 5a is equipped with a first lateral moving mechanism 5d. The first lateral moving mechanism 5d drives the cutting knife 5c or the outer turning knife 5b to approach the blank from the side of the cylinder liner power transmission assembly 4 for processing. The bottom of the slide plate 8a is slidably connected to the machine tool 8. The slide plate 8a is equipped with a front and back moving mechanism 8c that drives it to move back and forth. The front and back moving mechanism 8c is used to drive the electric tool holder 5a to move back and forth when trimming the outer circle of the blank, thereby realizing the trimming of the outer circle of the blank in the axial direction.

[0045] The unloading assembly 7 also includes a slide plate 8a. A cylinder seat 7a is provided on the slide plate 8a of the unloading assembly 7. The cylinder seat 7a is slidably connected to the slide plate 8a by a second sliding base 7g. A front-to-back extending expansion sleeve 7d is provided on the front side of the cylinder seat 7a. The expansion sleeve 7d is fixed to the front side of the cylinder seat 7a by a bearing seat. The cylinder seat 7a is equipped with a second lateral moving mechanism 7h. The second lateral moving mechanism 7h drives the cylinder seat 7a to move left and right so that the expansion sleeve 7d is directly facing the receiving sleeve 4a.

[0046] The outer diameter of the expansion sleeve 7d in its natural state is smaller than the inner diameter of the billet. The expansion sleeve 7d is covered by a compression ring 7e. A spring 7f connects the compression ring 7e and the expansion sleeve 7d. The second slide plate 8a is slidably connected to the machine tool 8. The slide plate 8a of the unloading assembly 7 is also equipped with a front-to-back moving mechanism 8c. The front-to-back moving mechanism 8c drives the expansion sleeve 7d to extend into the billet and compress the spring 7f.

[0047] An expansion sleeve 7d is fitted with an expansion mandrel 7c. A tensioning cylinder 7b is provided on the rear side of the cylinder seat 7a to push the expansion mandrel 7c to move back and forth. The extended end of the tensioning cylinder 7b passes through the cylinder seat 7a and is fixedly connected to the rear end of the expansion mandrel 7c. The front end of the expansion mandrel 7c is connected to an outer expansion end located outside the expansion sleeve 7d. The outer expansion end is a frustum-shaped cone with a larger front end and a smaller rear end. The diameter of the front end of the outer expansion end is larger than the inner diameter of the expansion sleeve 7d. The front end of the expansion sleeve 7d has several notches along its circumference, so that when the tensioning cylinder 7b drives the expansion mandrel 7c to move backward, the front end of the expansion sleeve 7d can open outward to form a claw shape, thereby opening and pressing against the blank after the expansion sleeve 7d extends into the blank for fixation.

[0048] The front side of the boring tool 6 is provided with a tool holder 6b that is directly opposite to the sleeve 4a. The tool holder 6b is provided with a boring tool 6d for boring the blank tube, a chamfering tool 6g for chamfering the blank end, and a countersinking tool 6h for countersinking the blank end, arranged sequentially from front to back. The boring tool 6 is slidably connected to the machine tool 8 through the boring sliding base 6a and is equipped with a boring pushing mechanism 8b for pushing it to move back and forth.

[0049] Ideally, the countersink 6h and the chamfering cutter 6g are located on both sides of the tool holder 6b, with the cutting edge of the countersink 6h facing forward and perpendicular to the axis of the tool holder 6b.

[0050] Multiple boring tools 6d are axially arranged, all positioned at the front end of the tool holder 6b, and each is an acute-angled triangle. The outer edge of any one boring tool 6d near the tool holder 6b forms an angle with the axis of the tool holder 6b, and the tip of this boring tool 6d extending beyond the tool holder 6b is its rear tip. The front edges of the remaining boring tools 6d are perpendicular to the axis of the tool holder 6b, and their front cutting edges extend beyond the tool holder 6b. This results in a front-to-back deviation between the machining tips of this boring tool 6d and the machining tips of the other boring tools 6d, and the machining accuracy of this boring tool 6d is higher than that of the other boring tools 6d, making its machining tip a finishing edge 6d'. The finishing edge 6d' can be used to finish the inner wall machined by the other boring tools 6d, improving machining efficiency.

[0051] Ideally, all boring tools 6d are mounted on tool holder 6b via first mounting brackets 6c. Tool holder 6b is provided with mounting protrusions corresponding to the boring tools 6d. Each first mounting bracket 6c is provided with a front-to-back extending slot 6f. The first mounting bracket 6c is fixed to the mounting protrusion by mounting bolts passing through the slot 6f, and the axial adjustment of the boring tool 6d is achieved through the slot 6f, thereby adjusting the front-to-back position of the boring tool 6d. Tool holder 6b is provided with an ejector screw 6e for each first mounting bracket 6c. The front end of the first mounting bracket 6c is pushed outward from the tool holder 6b by the ejector screw 6e, thereby achieving radial adjustment of the boring tool 6d.

[0052] Both the chamfering cutter 6g and the countersinking cutter 6h are mounted on the tool holder 6b via a second mounting bracket 6l. The tool holder 6b has mounting holes extending laterally corresponding to the second mounting bracket 6l. The second mounting bracket 6l is inserted into the mounting hole of the tool. The tool holder 6b has a threaded hole 6i perpendicular to and communicating with the mounting hole. The second mounting bracket 6l is secured within the mounting hole by a bolt threaded into the threaded hole 6i. This facilitates radial and axial adjustment of the boring cutter 6d, the chamfering cutter 6g, and the countersinking cutter 6h.

[0053] Ideally, the acute angle should be 10-20°.

[0054] The tool holder 6b has a cooling channel 6j extending forward and backward. The rear end of the cooling channel 6j extends to the outside of the spindle of the tool holder 6b, and the front end of the cooling channel 6j has a cooling support channel 6k corresponding to each boring tool 6d. The cooling channel 6j and the cooling support channel 6k can cool the boring tool 6d and reduce the temperature of the boring tool 6d during cutting.

[0055] Ideally, the external machining tool 5 and the unloading assembly 7 are located on the left and right sides of the receiving sleeve 4a, respectively. Both the external machining tool 5 and the unloading assembly 7 are mounted on the same slide plate 8a and share a single forward and backward moving mechanism 8c. This arrangement of the external machining tool 5 and the unloading assembly 7 on the left and right sides of the receiving sleeve 4a is reasonable, with a compact structure that saves space. Sharing a single slide plate 8a saves material, and the forward and backward moving mechanism 8c simultaneously pushes the unloading assembly 7 and the external machining tool 5 forward towards the workpiece. This not only brings the unloading assembly 7 closer to the part about to be cut but also moves the cutting blade 5c precisely to the cutting position, ensuring stable cutting.

[0056] Ideally, the forward and backward moving mechanism 8c, the boring pushing mechanism 8b, and the first lateral moving mechanism 5d should all be lead screw and nut mechanisms, while the second lateral moving mechanism 7h should be a cylinder.

[0057] The top of the machine tool 8 has a groove extending forward and backward. The boring push mechanism 8b and the forward and backward movement mechanism 8c are both fixed within this groove. Slide rails a are provided on the machine tool 8 corresponding to the slide plate 8a, the boring sliding base 6a, the second sliding base 7g, and the first sliding base 5e. The provided lead screw and nut mechanism can stably adjust the movement distance, while the provided cylinder enables rapid movement. The materials are simple and readily available, facilitating procurement. The boring push mechanism 8b and the forward and backward movement mechanism 8c are both located within the groove, making efficient use of space and resulting in a more compact structure.

[0058] Ideally, the top blocks 3a should be two, with the left one shorter than the right, and the distance between the two top blocks 3a should be greater than the diameter of the steel sleeve. The height of the top block 3a on the left should be lower than that of the top block 3a on the right. A connecting block 2b is fixed inside the storage box 2, located between the two top blocks 3a. The top of the connecting block 2b is also set with the left side higher than the right side, and the left and right sides of the connecting block 2b are in contact with the two top blocks 3a respectively. The connecting block 2b is higher than the height of the top block 3a on the right when it is at its lowest position. This allows the two top blocks 3a and the connecting block 2b to each push one billet, cutting a section of the path into two sections, saving time. After a billet is pre-pushed out, it stays on the connecting block 2b for a period of time, allowing workers to pre-inspect it and remove any obvious defects.

[0059] Ideally, the loading platform 1 has a positioning groove 1b recessed in the middle, which extends back and forth and can limit the movement range of the tubular blank so that it eventually falls into the positioning groove 1b.

[0060] Preferably, the extended end of the pushing cylinder 1a is provided with a frustum-shaped pusher 1c that is larger at the front and smaller at the back. The diameter of the rear end of the pusher 1c is smaller than the inner diameter of the billet, and the diameter of the front end of the pusher 1c is larger than the inner diameter of the billet but smaller than the inner diameter of the receiving sleeve 4a, so that the pusher 1c can extend into the receiving sleeve 4a to continue pushing the billet.

[0061] Both ends of the connecting block 2b extend forward and bend to the right, so that the connecting block 2b surrounds the top block 3a located on the right.

[0062] Ideally, the storage bin 2 should have a vertical partition 2a located on the left side of the material ejection structure 3, dividing the storage bin 2 into a storage area and a discharge area. A gap less than twice the diameter of the steel sleeve should be left between the partition 2a and the bottom of the storage bin 2. The partition 2a ensures that the top block on the left can only eject one billet at a time, while excess billets are stored in the storage area on the left side of the storage bin 2. The side wall of the discharge area should be lower than the side wall of the storage area, allowing workers to easily observe whether there are obvious defects in the billets within the discharge area and remove them as early as possible, improving processing efficiency. Lowering the side wall height also reduces the ejection distance of the material ejection structure 3, improving ejection efficiency. Correspondingly, the highest point of the loading platform 1 should be flush with the top of the right side wall of the discharge area.

[0063] Although embodiments of the invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A multi-functional integrated production equipment for cylinder liner machining, characterized in that: The system includes a loading platform (1), a pushing cylinder (1a) on the front side of the loading platform (1), the pushing cylinder (1a) being able to intermittently push the tubular billet backward, a machine tool (8) on the rear side of the loading platform (1), the top surface of the loading platform (1) being a V-shaped inclined surface, a loading mechanism on the left side of the loading platform (1) being able to lift the tubular billet onto the loading platform (1), and a cylinder liner power transmission assembly (4) for driving the billet to rotate on the front side of the machine tool (8). The rear side of the cylinder liner power transmission assembly (4) is provided with an external machining tool (5), an unloading assembly (7) and a boring tool (6) arranged sequentially from front to back. The boring tool (6) is located directly behind the cylinder liner power transmission assembly (4). The external machining tool (5) and the unloading assembly (7) are located on the right rear and left rear of the cylinder liner power transmission assembly (4), respectively. The unloading assembly (7) is slidably connected to the machine tool (8) and is moved to face the receiving sleeve (4a) by the second lateral moving mechanism (7h). The cylinder liner power transmission assembly (4) includes a spindle box (4b), on which a receiving sleeve (4a) for receiving a blank and a rotating sleeve (4f) fixedly connected are fixedly connected. The blank is pushed into the receiving sleeve (4a) by the pushing cylinder (1a). The rotating sleeve (4f) is rotatably connected to the spindle box (4b) by a rotating bearing. The rear end of the rotating sleeve (4f) extends out of the spindle box (4b) and is fixedly connected to a three-jaw power chuck (4c) located on the rear side of the receiving sleeve (4a). The three-jaw power chuck (4c) is used to clamp the tubular blank in the receiving sleeve (4a). The rotating sleeve (4f) is connected to a motor (4d) through a transmission mechanism (4e). The motor (4d) drives the rotating sleeve and the three-jaw power chuck (4c) clamping the blank to rotate. The external machining tool (5) includes a rotatable electric tool holder (5a). A cutting tool (5c) and an external turning tool (5b) are arranged on the electric tool holder (5a) along its circumference. The electric tool holder (5a) is slidably connected to the machine tool (8) and equipped with a first lateral moving mechanism (5d). The first lateral moving mechanism (5d) drives the cutting tool (5c) or the external turning tool (5b) to approach the blank for machining. The electric tool holder (5a) is also equipped with a front-back moving mechanism (8c) that drives it to move back and forth. The front-back moving mechanism (8c) is used to drive the external turning tool (5b) to move back and forth when it is facing the blank, thereby realizing the trimming of the outer circle of the blank in the axial direction. The front side of the unloading assembly (7) is provided with an expansion sleeve (7d) for extending into the tubular billet. The expansion sleeve (7d) is covered with a compression ring (7e). A spring (7f) is connected between the compression ring (7e) and the expansion sleeve (7d). The unloading assembly (7) is also equipped with a front-to-back moving mechanism (8c). The front-to-back moving mechanism (8c) drives the expansion sleeve (7d) to extend into the billet and compress the spring (7f). An expansion mandrel (7c) is fitted inside the expansion sleeve (7d). The rear side of component (7) is provided with a tensioning cylinder (7b) for pushing the expansion mandrel (7c) to slide. The front end of the expansion mandrel (7c) is located outside the expansion sleeve (7d) and is a frustum-shaped structure with a larger front end and a smaller rear end. The diameter of the front end of the expansion mandrel (7c) is larger than the inner diameter of the expansion sleeve (7d). The front end of the expansion sleeve (7d) is provided with several notches along its circumference, so that when the expansion mandrel (7c) moves backward, the front end of the expansion sleeve (7d) can open outward, thereby pressing against the inner side of the blank for fixation. The front side of the boring tool (6) is provided with a tool holder (6b) facing the sleeve (4a). The tool holder (6b) is provided with a boring tool (6d) for boring the blank tube, a chamfering tool (6g) for chamfering the blank end, and a countersinking tool (6h) for countersinking the blank end from front to back. The boring tool (6) is slidably connected to the machine tool (8) through the boring sliding base (6a) and is equipped with a boring pushing mechanism (8b) for pushing it to move back and forth. The countersinking cutter (6h) and the chamfering cutter (6g) are located on both sides of the tool holder (6b). The cutting edge of the countersinking cutter (6h) is facing forward and its cutting edge is perpendicular to the axis of the tool holder (6b). The boring cutters (6d) are multiple and arranged axially. All the boring cutters (6d) are located at the front end of the tool holder (6b) and are all acute triangles. The outer side of any one of the boring cutters (6d) forms an acute angle with the axis of the tool holder (6b). The tip of the boring cutter (6d) extending outside the tool holder (6b) is the rear tip. The front side of the other boring cutters (6d) is perpendicular to the axis of the tool holder (6b), and the front cutting edge of each of them extends outside the tool holder (6b). This results in a front-to-back deviation between the machining tip of the boring cutter (6d) and the machining tips of the other boring cutters (6d). The machining accuracy of the boring cutter (6d) is higher than that of the other boring cutters (6d), making the machining tip of the boring cutter (6d) a finishing edge (6d'). All boring tools (6d) are mounted on the tool holder (6b) via first mounting brackets (6c). The tool holder (6b) is provided with mounting protrusions corresponding to the boring tools (6d). Each first mounting bracket (6c) is provided with a front-to-back extending slot (6f). The first mounting bracket (6c) is fixed to the mounting protrusion by mounting bolts passing through the slot (6f). The axial adjustment of the boring tool (6d) is achieved through the slot (6f), thereby adjusting the front-to-back position of the boring tool (6d). Each first mounting bracket (6c) on the tool holder (6b) is provided with an ejector screw (6e). The front end of the first mounting bracket (6c) is pushed outwards towards the tool holder (6b) by the ejector screw (6e), thereby adjusting the boring tool (6d) radially. Both the chamfering blade (6g) and the countersinking blade (6h) are mounted on the blade holder (6b) via the second mounting bracket (6l). The blade holder (6b) is provided with mounting holes extending to the left and right corresponding to the second mounting bracket (6l). The second mounting bracket (6l) is inserted into the mounting hole of the blade. The blade holder (6b) is provided with a threaded hole (6i) that is perpendicular to and communicates with the mounting hole. The second mounting bracket (6l) is fixed by a bolt threaded into the threaded hole (6i). The acute angle is 10~20°; The tool holder (6b) is provided with a cooling channel (6j) extending from front to back. The rear end of the cooling channel (6j) extends to the outside of the spindle of the tool holder (6b). The front end of the cooling channel (6j) is provided with a cooling branch (6k) corresponding to each boring tool (6d).

2. The multi-functional integrated production equipment for cylinder liner processing according to claim 1, characterized in that: The machine tool (8) is slidably connected to a slide plate (8a). The external machining tool (5) and the unloading assembly (7) are both installed on the slide plate (8a) and share a forward and backward moving mechanism (8c). The slide plate (8a) is pushed forward and backward by the forward and backward moving mechanism (8c), thereby realizing the forward and backward movement of the external machining tool (5) and the unloading assembly (7).

3. The multi-functional integrated production equipment for cylinder liner processing according to claim 2, characterized in that: The forward and backward moving mechanism (8c), the boring pushing mechanism (8b), and the first lateral moving mechanism (5d) are all lead screw and nut mechanisms, and the second lateral moving mechanism (7h) is a cylinder; The top of the machine tool (8) is provided with a groove extending from front to back. The boring pushing mechanism (8b) and the front and back moving mechanism (8c) are both fixed in the groove. The machine tool (8) is provided with slide rails (a) corresponding to the slide plate (8a), the boring sliding base (6a), the second sliding base (7g) and the first sliding base (5e).

4. The multi-functional integrated production equipment for cylinder liner processing according to claim 1, characterized in that: The feeding mechanism includes a storage box (2) with an upper opening located on the left side of the feeding platform (1). The bottom of the storage box (2) is inclined with the left side higher than the right side. A material ejection structure (3) is provided on the right side inside the storage box (2). The material ejection structure (3) includes a lifting cylinder (3b) located below the storage box (2) and a top block (3a) located inside the storage box (2). The top surface of the top block (3a) is an inclined surface with the left side higher than the right side. The material ejection structure (3a) is used to eject the material. The tubular billet is pushed out along the inner right side of the storage box (2). The storage box (2) is vertically provided with a partition (2a) located on the left side of the material ejection structure (3). The partition (2a) divides the storage box (2) into a storage area and a discharge area. There is a gap between the partition (2a) and the bottom of the storage box (2) that is less than twice the diameter of the steel sleeve. The side wall of the discharge area is lower than the side wall of the storage area, and the highest point of the loading platform (1) is not higher than the top of the right side wall of the discharge area.

5. The multi-functional integrated production equipment for cylinder liner processing according to claim 4, characterized in that: The top blocks (3a) are two blocks spaced apart on the left and right. The length of the top block (3a) on the left is shorter than that of the top block (3a) on the right, and the distance between the two top blocks (3a) is greater than the diameter of the steel sleeve. The height of the top block (3a) on the left is lower than that of the top block (3a) on the right. A connecting block (2b) is fixed inside the storage box (2) between the two top blocks (3a). The top surface of the connecting block (2b) is also a slope that is higher on the left and lower on the right. The left and right sides of the connecting block (2b) are in contact with the two top blocks (3a) respectively. The connecting block (2b) is higher than the height of the top block (3a) on the right when it is at its lowest position. The top block (3a) on the right is close to the inner wall of the right side of the storage box.

6. The multi-functional integrated production equipment for cylinder liner processing according to claim 4, characterized in that: The top surface of the loading platform (1) is recessed in the middle for accommodating tubular blanks, and the positioning groove (1b) extends back and forth.

7. The multi-functional integrated production equipment for cylinder liner processing according to claim 4, characterized in that: The extended end of the pushing cylinder (1a) is provided with a frustum-shaped pusher (1c) that is larger at the front and smaller at the back. The diameter of the rear end of the pusher (1c) is smaller than the inner diameter of the billet, and the diameter of the front end of the pusher (1c) is larger than the inner diameter of the billet and smaller than the inner diameter of the receiving sleeve (4a), so that the pusher (1c) can extend into the receiving sleeve (4a) to continue pushing the billet.

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