Large-scale hydraulic cylinder long shaft deep hole finishing equipment and process thereof

Abstract

The application discloses a kind of super-large hydraulic cylinder long shaft deep hole finishing equipment and process, including workbench, the workbench is provided with turning assembly and the clamping assembly for fixed workpiece, the turning assembly includes tool bar and the tool of tool bar end, oil delivery channel is arranged in the tool bar, the end of oil delivery channel is provided with flushing component close to tool, the outside of tool bar is provided with chip removal component, oil cavity is formed between the end of chip removal component and tool, chip removal component keeps oil cavity full of oil while chip removal, oil pressure in oil cavity is greater than the pressure outside oil cavity, can provide lubrication while cutting to tool simultaneously with the chip generated by cutting with oil liquid simultaneously discharged.

Description

Technical Field

[0001] This invention relates to the field of hydraulic cylinder processing equipment technology, specifically to a precision machining equipment and process for long shaft deep holes of ultra-large hydraulic cylinders. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy to perform linear reciprocating motion. It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device, has no transmission backlash, and provides smooth movement. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] A Chinese invention patent with application publication number CN118046019A discloses a drilling device for piston rods of hydraulic cylinders with automatic cleaning function. The device includes a processing table with a processing mechanism and a circulation mechanism. The processing mechanism includes several first clamping components and second clamping components. Several transmission components and drilling components are provided on the left side of the second clamping components. The circulation mechanism includes a filtering component, a chip removal component, and a cleaning component. The drill bit drills a hole in the workpiece held by the first clamping components and the second clamping components under the drive of the transmission components. The oil pump inputs the oil from the oil filter into the oil delivery chamber and flushes the debris into the cavity through the feed hole and discharges it. The chip removal component collects the waste debris.

[0004] However, the inventors discovered that the size of the debris generated by the device varies during actual production. Large debris is difficult to enter the feed hole and cannot be effectively discharged. Based on this, we proposed a precision machining equipment and process for long shaft deep holes of ultra-large hydraulic cylinders. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a turning assembly and a clamping assembly for fixing the workpiece on a worktable. The turning assembly includes a tool holder and a cutting tool disposed at the end of the tool holder. An oil supply channel is provided inside the tool holder, and a flushing assembly is provided at the end of the oil supply channel near the cutting tool. A chip removal assembly is provided outside the tool holder, and an oil cavity is formed between the chip removal assembly and the end of the cutting tool. The chip removal assembly keeps the oil cavity full of oil while removing chips, and the oil pressure inside the oil cavity is greater than the pressure outside the oil cavity. This allows the cutting chips to be discharged along with the oil while providing lubrication for the cutting tool.

[0006] To address the aforementioned technical problems, the present invention adopts the following technical solution:

[0007] A precision machining equipment for deep holes of long shafts of ultra-large hydraulic cylinders includes a worktable. The worktable is equipped with a turning component and a clamping component for fixing the workpiece. The turning component includes a tool holder and a cutting tool disposed at the end of the tool holder. An oil supply channel is provided inside the tool holder. A flushing component is provided at the end of the oil supply channel near the cutting tool. A chip removal component is provided outside the tool holder. An oil cavity is formed between the chip removal component and the end of the cutting tool. The chip removal component keeps the oil cavity full of oil while removing chips.

[0008] As a preferred embodiment, the turning assembly includes a slide rail disposed on the worktable, a lead screw rotatably disposed within the slide rail, a first motor for driving the lead screw to rotate, a drive seat slidably disposed on the slide rail, a second motor for driving the tool holder to rotate, and a fixed seat disposed at the other end of the slide rail.

[0009] As a preferred embodiment, the clamping assembly includes a lower clamping member fixedly mounted on the worktable, an upper clamping member cooperating with the lower clamping member, and a cylinder for driving the upper clamping member to move.

[0010] As a preferred embodiment, the flushing assembly includes an oil supply pipe disposed at one end of the drive seat and connected to the oil supply channel, an oil outlet disposed on the cutter bar, a rotatable paddle disposed on the oil outlet, an annular frame disposed inside the oil outlet, a groove disposed on the annular frame, a column disposed slidably in the groove, and a first spring disposed between the groove and the column.

[0011] As a preferred embodiment, a rectangular groove is provided on the other side of the ring frame and the rectangular groove is provided on the tool holder. A trapezoidal block is provided in the rectangular groove, and a second spring is provided between the trapezoidal block and the rectangular groove.

[0012] As a preferred embodiment, the chip removal assembly includes a bracket fixedly disposed within a fixed base, a baffle disposed on the other side of the bracket, a third spring disposed between the baffle and the bracket, and an arc-shaped groove disposed below the baffle.

[0013] As a preferred embodiment, the two sides of the arc-shaped groove facing the tool are staggered, and the arc-shaped groove is wide-mouthed.

[0014] As a preferred embodiment, a telescopic rod is provided between the annular frame and the baffle.

[0015] As another preferred embodiment, the fixed base has an annular cavity inside, and a chip removal pipe is provided at the lower end of the annular cavity.

[0016] In addition, the present invention also provides a processing technology for a long shaft deep hole precision machining equipment for ultra-large hydraulic cylinders, including the following steps:

[0017] a. Loading process: The worker inserts the workpiece into the fixed seat, and the tail end of the workpiece is placed on the lower clamping part. The drive cylinder drives the upper clamping part to press down and clamp the workpiece.

[0018] b. Oil delivery process: The oil is delivered into the oil delivery channel through the oil delivery pipe and discharged from the oil outlet. During the rotation of the cutter bar, the deflector is driven to rotate. When it passes the column, it is blocked by the column. With the continuous rotation of the cutter bar, the other end of the oil outlet drives the deflector to squeeze the column, thus passing over the column and continuing to rotate.

[0019] c. Adjustment process: When the oil in the oil chamber flows out too quickly, the pressure in the oil chamber decreases, and the third spring pushes the baffle to move towards the cutter head; when the arc-shaped groove is blocked by debris, the oil outlet continuously discharges oil, the pressure in the oil chamber increases, and pushes the baffle to squeeze the third spring.

[0020] d. Chip removal process: The oil output from the oil outlet carries the chips generated by the cutting tool and flows out from the arc groove to the annular cavity in the drive seat, and then is discharged through the chip removal pipe.

[0021] The beneficial effects of this invention are:

[0022] 1. In this invention, an oil supply channel is provided in the middle of the tool holder, and a flushing component and a chip removal component are provided at the end of the oil supply channel near the tool. The oil provided in the flushing component can provide lubrication for the cutting tool and discharge the chips generated during cutting at the same time.

[0023] 2. In this invention, by providing a swingable paddle inside the flushing assembly, the paddle swings as the oil flows from the oil delivery channel to the oil outlet and then to the oil chamber, thereby improving the fluidity of the oil.

[0024] 3. In this invention, a retractable baffle is also provided on the chip removal assembly. The size of the oil chamber is adjusted by the baffle to ensure that the oil chamber is full of oil. This not only improves the flow rate of the oil, but also provides all-round angular lubrication for the cutting tool.

[0025] In summary, this equipment has advantages such as good lubrication and fast chip removal speed, and is especially suitable for the field of hydraulic cylinder processing equipment technology. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1This is a schematic diagram of a machine for precision machining of long shaft deep holes in ultra-large hydraulic cylinders.

[0028] Figure 2 This is a schematic diagram of a machine for precision machining of long shaft deep holes in ultra-large hydraulic cylinders.

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram of the turning assembly.

[0031] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0032] Figure 6 This is a schematic diagram of the chip removal assembly;

[0033] Figure 7 This is a cross-sectional view of the scouring component;

[0034] Figure 8 This is a cross-sectional view of the scouring component;

[0035] Figure 9 This is a cross-sectional schematic diagram of the annular cavity;

[0036] Figure 10 This is a process flow diagram of a deep hole precision machining equipment for a long shaft of an ultra-large hydraulic cylinder.

[0037] In the diagram: 1-Worktable; 2-Turning assembly; 3-Workpiece; 4-Clamping assembly; 5-Tool holder; 6-Tool; 7-Oil supply channel; 8-Flushing assembly; 9-Chip removal assembly; 21-Slide groove; 22-Lead screw; 23-First motor; 24-Drive base; 25-Second motor; 26-Fixed base; 27-Chip removal pipe; 41-Lower clamping component; 42-Upper clamping component; 43-Cylinder; 81-Oil supply pipe; 82-Oil outlet; 83-Pulley; 84-Annular frame; 85-Groove; 86-Main body; 87-First spring; 88-Rectangular groove; 89-Trapezoidal block; 810-Second spring; 91-Bracket; 92-Baffle; 94-Third spring; 95-Arc groove; 261-Annular cavity; 841-Telescopic rod. Detailed Implementation

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0039] Example 1

[0040] like Figures 1 to 9As shown, a precision machining equipment for long shaft deep holes of ultra-large hydraulic cylinders includes a worktable 1. The worktable 1 is equipped with a turning assembly 2 and a clamping assembly 4 for fixing the workpiece 3. The turning assembly 2 includes a tool holder 5 and a cutting tool 6 disposed at the end of the tool holder 5. An oil supply channel 7 is provided inside the tool holder 5. A flushing assembly 8 is provided at the end of the oil supply channel 7 near the cutting tool 6. A chip removal assembly 9 is provided outside the tool holder 5. An oil cavity is formed between the chip removal assembly 9 and the end of the cutting tool 6. The chip removal assembly 9 keeps the oil cavity full of oil while removing chips. The cutting tool 6 in this invention is an unfolded cutting tool.

[0041] It is worth mentioning here that, as Figure 4 As shown, the turning assembly 2 includes a slide 21 disposed on the worktable 1, a lead screw 22 rotatably disposed in the slide 21, a first motor 23 for driving the lead screw 22 to rotate, a drive seat 24 slidably disposed on the slide 21, a second motor 25 for driving the tool holder 5 to rotate, and a fixed seat 26 disposed at the other end of the slide 21; in this invention, a belt and a pulley sleeved on the output shaft of the second motor 25 and the tool holder 5 are also provided inside the drive seat 24, and the second motor 25 drives the tool holder 5 to rotate.

[0042] In this embodiment, as Figure 3 As shown, the clamping assembly 4 includes a lower clamping member 41 fixedly mounted on the worktable 1, an upper clamping member 42 cooperating with the lower clamping member 41, and a cylinder 43 for driving the upper clamping member 42 to move.

[0043] In addition, such as Figures 4 to 8 As shown, the flushing assembly 8 includes an oil pipe 81 disposed at one end of the drive seat 24 and connected to the oil supply channel 7, an oil outlet 82 disposed on the cutter bar 5, a paddle 83 rotatably disposed on the oil outlet 82, an annular frame 84 disposed inside the oil outlet 82, a groove 85 disposed on the annular frame 84, a column 86 slidably disposed in the groove 85, and a first spring 87 disposed between the groove 85 and the column 86. When the cutter bar 5 rotates, it drives the paddle 83 to rotate. When it passes the column 86, it is intercepted by the column 86. Under the continuous rotation of the cutter bar 5, the other end of the oil outlet 82 drives the paddle 83 to squeeze the column 86, thereby passing over the column 86 and continuing to rotate. The front end of the column 86 is arc-shaped.

[0044] Furthermore, such as Figures 4 to 8As shown, a rectangular groove 88 is provided on the other side of the annular frame 84 and is provided on the knife bar 5. A trapezoidal block 89 is provided in the rectangular groove 88, and a second spring 810 is provided between the trapezoidal block 89 and the rectangular groove 88. A telescopic rod 841 is provided between the annular frame 84 and the baffle 92. In this invention, the annular frame 84 moves to the rear end of the trapezoidal block 89 by squeezing the trapezoidal block 89. The trapezoidal block 89 blocks the annular frame 84 under the elastic force of the second spring 810, preventing the annular frame 84 from moving.

[0045] It needs to be emphasized that, such as Figures 4 to 8 As shown, the chip removal assembly 9 includes a bracket 91 fixedly installed in the fixed base 26, a baffle 92 installed on the other side of the bracket 91, a third spring 94 installed between the baffle 92 and the bracket 91, and an arc-shaped groove 95 installed below the baffle 92. The arc-shaped groove 95 has two misaligned sides facing the tool, and the arc-shaped groove 95 is wide-mouthed. In this invention, the wide-mouthed arc-shaped groove 95 can receive more chips. As the chips rotate with the oil, the arc-shaped groove 95 is misaligned, and the protruding side can intercept more chips and discharge them.

[0046] Furthermore, such as Figure 9 As shown, the fixed base 26 has an annular cavity 261 inside, and a chip removal pipe 27 is provided at the lower end of the annular cavity 261.

[0047] Example 2

[0048] A machining process for a deep hole precision machining equipment for a long shaft of an ultra-large hydraulic cylinder includes the following steps:

[0049] a. Loading process: The worker inserts the workpiece 3 into the fixed seat 26, and the tail end of the workpiece 3 is placed on the lower clamping member 41. The driving cylinder 43 drives the upper clamping member 42 to press down and clamp the workpiece 3.

[0050] b. Oil delivery process: Oil is delivered into the oil delivery channel 7 through the oil delivery pipe 81 and discharged from the oil outlet 82. During the rotation of the cutter bar 5, the deflector 83 is driven to rotate. When passing the column 86, it is intercepted by the column 86. Under the continuous rotation of the cutter bar 5, the other end of the oil outlet 82 drives the deflector 83 to squeeze the column 86, thus passing over the column 86 and continuing to rotate.

[0051] c. Adjustment process: When the oil in the oil chamber flows out too quickly, the pressure in the oil chamber decreases, and the third spring 94 pushes the baffle 92 to move towards the cutter head; when the arc groove 95 is blocked by debris, the oil outlet 82 continuously discharges oil, the pressure in the oil chamber increases, and pushes the baffle 92 to squeeze the third spring 94.

[0052] d. Chip removal process: The oil output from the oil outlet 82 carries the chips generated by the cutting tool 6 and flows out from the arc groove 95 to the annular cavity 261 in the drive seat 24, and then is discharged through the chip removal pipe 27.

[0053] The work process is as follows:

[0054] The workpiece 3 is manually inserted into the fixed seat 26, and the tail end of the workpiece 3 is placed on the lower clamping member 41. The driving cylinder 43 drives the upper clamping member 42 to press down and clamp the workpiece 3.

[0055] Oil is fed into the oil channel 7 through the oil pipe 81 and discharged from the oil outlet 82. During the rotation of the cutter bar 5, the pawl 83 is rotated and is blocked by the column 86 when it passes through the column 86. Under the continuous rotation of the cutter bar 5, the other end of the oil outlet 82 drives the pawl 83 to squeeze the column 86, thus passing over the column 86 and continuing to rotate.

[0056] The oil output from the oil outlet 82 carries the chips generated by the cutting tool 6 and flows out from the arc groove 95 to the annular cavity 261 in the drive seat 24, and then is discharged through the chip removal pipe 27.

[0057] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art under the technical guidance of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A super large hydraulic cylinder long shaft deep hole finishing equipment, comprising a workbench (1), characterized in that: The workbench (1) is provided with a turning assembly (2) and a clamping assembly (4) for fixing a workpiece (3), the turning assembly (2) comprises a tool bar (5) and a tool (6) arranged at the end of the tool bar (5), an oil delivery channel (7) is arranged in the tool bar (5), a flushing assembly (8) is arranged at the end of the oil delivery channel (7) close to the tool (6), a chip removal assembly (9) is arranged outside the tool bar (5), and the chip removal assembly (9) and the end of the tool (6) form an oil cavity, and the chip removal assembly (9) keeps the oil cavity full of oil while removing chips; The flushing assembly (8) comprises an oil delivery pipe (81) arranged at one end of a driving seat (24) and communicated with the oil delivery channel (7), an oil outlet (82) arranged on the tool bar (5), a rotating push piece (83) arranged on the oil outlet (82), an annular frame (84) arranged on the inner side of the oil outlet (82), a groove (85) arranged on the annular frame (84), a column (86) slidingly arranged in the groove (85), and a first spring (87) arranged between the groove (85) and the column (86); the other side of the annular frame (84) is provided with a rectangular groove (88) arranged on the tool bar (5), and a trapezoidal block (89) is arranged in the rectangular groove (88); a second spring (810) is arranged between the trapezoidal block (89) and the rectangular groove (88); The chip removal assembly (9) comprises a support (91) fixedly arranged in a fixed seat (26), a baffle (92) arranged on the other side of the support (91), a third spring (94) arranged between the baffle (92) and the support (91), and an arc-shaped groove (95) arranged below the baffle (92); the two sides of the end of the arc-shaped groove (95) facing the tool are staggered, and the arc-shaped groove (95) is arranged in a wide-mouthed manner; a telescopic rod (841) is arranged between the annular frame (84) and the baffle (92).

2. The super large hydraulic cylinder long shaft deep hole finishing equipment according to claim 1, characterized in that, The turning assembly (2) comprises a sliding groove (21) arranged on the workbench (1), a lead screw (22) rotatably arranged in the sliding groove (21), a first motor (23) for driving the lead screw (22) to rotate, a driving seat (24) slidingly arranged on the sliding groove (21), a second motor (25) for driving the tool bar (5) to rotate, and a fixed seat (26) arranged at the other end of the sliding groove (21).

3. The super large hydraulic cylinder long shaft deep hole finishing equipment according to claim 2, characterized in that, The clamping assembly (4) comprises a lower clamping piece (41) fixedly arranged on the workbench (1), an upper clamping piece (42) matched with the lower clamping piece (41), and a cylinder (43) for driving the upper clamping piece (42) to move.

4. The super large hydraulic cylinder long shaft deep hole finishing equipment according to claim 3, characterized in that, The inside of the fixed seat (26) is provided with an annular cavity (261), and the lower end of the annular cavity (261) is provided with a chip removal pipe (27).

5. A machining process using the super-large hydraulic cylinder long shaft deep hole finishing equipment of claim 4, comprising the following steps: a. The feeding process: manually insert the workpiece (3) into the fixed seat (26), the tail end of the workpiece (3) is placed on the lower clamping piece (41), the upper clamping piece (42) is driven by the driving cylinder (43) to press down and clamp the workpiece (3); b. Oil conveying process: the oil conveying pipe (81) inputs oil into the oil conveying channel (7), and the oil is discharged from the oil outlet (82); the knife bar (5) drives the push piece (83) to rotate in the rotating process, and is intercepted by the column (86) when passing through the column (86); under the continuous rotation of the knife bar (5), the other end of the oil outlet (82) drives the push piece (83) to extrude the column (86), so as to continue to rotate beyond the column (86); c. Adjustment process: when the oil in the oil cavity flows too fast, the pressure in the oil cavity decreases, the third spring (94) drives the baffle (92) to move towards the cutter head direction; when the arc-shaped groove (95) is blocked by the debris, the oil outlet (82) continuously discharges oil, the pressure in the oil cavity increases, and the baffle (92) extrudes the third spring (94); d. Chip removal process: the oil output by the oil outlet (82) carries the debris generated by the cutting of the cutter (6) to flow out of the arc-shaped groove (95), and flows into the annular cavity (261) in the driving seat (24), and then is discharged through the chip removal pipe (27).

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