A machine tool for machining cam holes of a cylinder head

Abstract

The utility model relates to air cylinder head cam hole processing technical field especially relates to a kind of machine tool of processing air cylinder head cam hole, including machine tool support platform;Still including a support frame and moving platform, air cylinder head is fixed on machine tool support platform, two processing cutters that are left and right relative are provided in machine tool support platform top, moving platform is installed in processing cutter top, one support frame is movably connected between two moving platforms, two threaded rods of thread structure opposite are rotatably connected in the left and right sides of one support frame, the left and right sides of one support frame are fixedly connected with limit post, and screw hole matched with threaded rod is set in moving platform;The utility model is by being provided with opposite moving platform and the processing cutter of being installed in the moving platform below, limit post can be guided, while rotating two threaded rods of thread structure opposite, to realize the synchronous movement of two processing cutters in opposite direction, carry out synchronous processing, improve the processing efficiency of air cylinder head cam hole.

Description

Technical Field

[0001] This utility model belongs to the field of cylinder head cam hole processing technology, specifically relating to a machine tool for processing cylinder head cam holes. Background Technology

[0002] To ensure that the opening and closing of the valves can be performed precisely according to the engine's working cycle and to guarantee the normal operation of the engine, cam holes and matching camshafts are often required in the cylinder head. The cams on the camshaft are designed with specific profiles. When the cam rotates, it pushes the valve tappet upward, thereby opening the valve. When the cam leaves the tappet, the valve falls back and closes under the action of the spring, thereby controlling the intake and exhaust process.

[0003] Currently, when machining the cam bore of a motorcycle cylinder head, traditional cutting tools cannot machine it because the cam bore is enclosed within a cavity. To facilitate machining, existing machine tools use moving cutting tools. However, existing moving cutting tools often reciprocate within the cavity, which means that drilling can only be performed in one direction, resulting in low machining efficiency for the cam bore of the cylinder head.

[0004] Therefore, to address the problem that existing moving tools mounted on machine tools can only perform drilling in one direction, resulting in low processing efficiency, a machine tool for machining cylinder head cam holes can be designed. Utility Model Content

[0005] To overcome the problem that existing moving tools installed on machine tools can only perform drilling in one direction, resulting in low processing efficiency.

[0006] The technical solution of this utility model is as follows: a machine tool for processing cam holes in cylinder heads, including a machine tool support table; it also includes a first support frame and a movable table. A cylinder head is fixed on the machine tool support table, and two processing tools located inside the cylinder head and facing each other are arranged above the machine tool support table. A movable table is installed above the processing tools, and the first support frame is movably connected between the two movable tables. Two threaded rods with opposite thread structures are rotatably connected to the left and right sides of the first support frame. Limiting posts are fixedly connected to the left and right sides of the first support frame, and a limiting ring is fixedly connected to the side of the threaded rod away from the first support frame. A threaded hole matching the threaded rod is opened on the movable table, and the movable table is sleeved on the outside of the limiting post. The movable table is located between the limiting ring and the first support frame.

[0007] Preferably, by rotating two threaded rods with opposite thread structures, the two moving stages cannot rotate with the threaded rods under the restriction of the limiting post, but instead rotate in opposite directions along the limiting post. At the same time, the machining tool is rotated to machine the cam hole inside the cylinder head. The first support frame provides support for the threaded rods and the limiting post, and the limiting ring can limit the movement distance of the moving stages to prevent the moving stages from completely detaching from the threaded rods.

[0008] Preferably, a bidirectional motor is installed inside the No. 1 support frame, and two threaded rods are connected to the output end of the bidirectional motor. The bidirectional motor is used to drive the threaded rods to rotate.

[0009] Preferably, two rotary motors are installed at the bottom of the two moving tables, and a support ring is fixedly connected to the output end of the rotary motors. The rotary motors are used to drive the machining tools to rotate.

[0010] Preferably, one end of the machining tool is fixedly connected to a mounting ring that is close to the support ring, and both the support ring and the mounting ring have a No. 1 anchoring hole.

[0011] As a preferred embodiment, a No. 1 positioning column is fixedly connected to the bottom of the moving platform, a No. 1 positioning hole is opened on the rotary motor, and a No. 2 anchoring hole is opened on the No. 1 positioning column.

[0012] Preferably, a second support frame is installed on the machine tool support platform, and an electric push rod is installed at the bottom of the second support frame. The first support frame is fixedly connected to the output end of the electric push rod, and the electric push rod is used to drive the first support frame to move.

[0013] As a preferred embodiment, a No. 2 positioning column is fixedly connected to the bottom end of the No. 2 support frame, and a No. 2 positioning hole matching the No. 2 positioning column is provided on the electric push rod, and a No. 3 anchoring hole is provided on the No. 2 positioning column.

[0014] The beneficial effects of this utility model are: 1. By setting relative moving tables and machining tools installed below the moving tables, the limiting column can guide the movement and rotate two threaded rods with opposite thread structures, thereby enabling the two machining tools to move synchronously in opposite directions and perform synchronous machining on both sides of the cylinder head, improving the machining efficiency of the cylinder head cam hole. 2. The first positioning post and the first positioning hole enable the rotary motor to be positioned and installed, fixing it directly below the moving table to prevent it from shifting. Meanwhile, the second positioning post and the second positioning hole enable the electric push rod to be installed directly below the second support frame, achieving precise positioning of the processing tool and improving the yield rate of the processed product. Attached Figure Description

[0015] Figure 1 The diagram shown is an equiaxial three-dimensional structure of the machine tool support table of this utility model. Figure 2 The diagram shown is an equiaxial three-dimensional structural schematic of the No. 1 support frame of this utility model; Figure 3 The diagram shown is an equiaxial three-dimensional structure of the rotary motor and machining tool of this utility model. Figure 4 The diagram shown is a three-dimensional structural diagram of the lower part of the No. 1 support frame of this utility model; Figure 5 The diagram shown is a three-dimensional structural diagram of the lower part of the No. 2 support frame of this utility model; Figure 6 The diagram shown is an isometric three-dimensional structural schematic of the electric push rod and the first support frame of this utility model.

[0016] Explanation of reference numerals in the attached drawings: 1. Machine tool support table; 2. Support frame 1; 3. Moving table; 4. Machining tool; 5. Threaded rod; 6. Limiting post; 7. Limiting ring; 8. Bidirectional motor; 9. Rotary motor; 10. Support ring; 11. Mounting ring; 12. Anchor hole 1; 13. Positioning post 1; 14. Positioning hole 1; 15. Anchor hole 2; 16. Support frame 2; 17. Electric push rod; 18. Positioning post 2; 19. Positioning hole 2; 20. Anchor hole 3. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please see Figures 1-6This utility model provides an embodiment: a machine tool for machining the cam hole of a cylinder head, including a machine tool support table 1; it also includes a first support frame 2 and a movable table 3. A cylinder head is fixed on the machine tool support table 1. Two machining tools 4, located inside the cylinder head and facing each other, are arranged above the machine tool support table 1. The movable table 3 is mounted above the machining tools 4. The first support frame 2 is movably connected between the two movable tables 3. Two threaded rods 5 with opposite thread structures are rotatably connected to the left and right sides of the first support frame 2. Limiting posts 6 are fixedly connected to the left and right sides of the first support frame 2. A limiting ring 7 is fixedly connected to the side of the threaded rod 5 away from the first support frame 2. The movable table 3 has threaded holes matching the threaded rods 5. The movable table 3 is sleeved on the outside of the limiting post 6. The movable table 3 is positioned between the limiting ring 7 and the first support frame 2. By rotating the two threaded rods 5 with opposite thread structures, under the restriction of the limiting post 6, the two movable tables 3 cannot rotate with the threaded rods 5, but instead rotate in opposite directions along the limiting post 6. At the same time, the machining tools 4 are rotated, machining the inside of the cylinder head. For cam hole machining, support frame 2 provides support for threaded rod 5 and limiting post 6. Limiting ring 7 can limit the movement distance of moving table 3 to prevent moving table 3 from completely detaching from threaded rod 5. Bidirectional motor 8 is installed inside support frame 2. Two threaded rods 5 are connected to the output end of bidirectional motor 8. Bidirectional motor 8 is used to drive threaded rod 5 to rotate. Bidirectional motor 8 has two output ends, which can drive threaded rods 5 on both sides to rotate, thereby realizing the movement of moving table 3. Two rotary motors 9 are respectively installed at the bottom of the two moving tables 3. Support ring 10 is fixedly connected to the output end of rotary motor 9. Rotary motor 9 is used to drive machining tool 4 to rotate. One end of machining tool 4 is fixedly connected to mounting ring 11 that is close to support ring 10. Anchor hole 12 is opened on both support ring 10 and mounting ring 11. Through the anchor hole 12 opened on support ring 10 and mounting ring 11, the machining tool 4 and rotary motor 9 can be fixed by bolts and nuts. This split design allows for the replacement of worn machining tool 4.

[0019] Please see Figures 3-6In this embodiment, a positioning post 13 is fixedly connected to the bottom of the moving platform 3. A positioning hole 14 is provided on the rotary motor 9, and a second anchoring hole 15 is provided on the positioning post 13. The positioning post 13 is inserted into the positioning hole 14 to position the moving platform 3 and prevent it from tilting. The anchor is inserted into the second anchoring hole 15 to fix the moving platform 3. A second support frame 16 is installed on the machine tool support platform 1. An electric push rod 17 is installed at the bottom of the second support frame 16. The first support frame 2 is fixedly connected to the output end of the electric push rod 17. The electric push rod 17 is used to drive... The first support frame 2 moves, and the electric push rod 17 drives the first support frame 2, which is fixedly connected to the bottom of the output end, to move up and down through the telescopic output end, thereby changing the height of the moving tool. The bottom end of the second support frame 16 is fixedly connected to the second positioning post 18. The electric push rod 17 is provided with a second positioning hole 19 that matches the second positioning post 18. The second positioning post 18 is provided with a third anchoring hole 20. The design of the second positioning post 18 and the second positioning hole 19 can realize the positioning and installation of the electric push rod 17. The electric push rod 17 can be installed by passing the anchor through the third anchoring hole 20.

[0020] During installation, the operator first aligns the second positioning hole 19 on the electric push rod 17 with the second positioning post 18 at the bottom of the second support frame 16. Then, the top of the electric push rod 17 is pressed tightly against the bottom of the second support frame 16, and the anchor is driven into the third anchor hole 20 to install the electric push rod 17 and the first support frame 2 fixedly connected to the output end of the electric push rod 17. The corresponding machining tool 4 is selected, and its mounting ring 11 is pressed tightly against the support ring 10 of the rotary motor 9. The bolt is passed through the first anchor hole 12 and the nut is tightened to fix it. The first positioning hole 14 on the rotary motor 9 is aligned with the first positioning post 13 below the moving table 3, and the anchor is driven into the second anchor hole 15 to fix the rotary motor 9. During machining, the cylinder head is first installed at the center of the machine tool support table 1. Then, the electric push rod 17 is started, and the output end of the electric push rod 17 is extended, which drives the machining tool 4 to move downward into the cavity of the cylinder head. Then, the two rotary motors 9 are started synchronously through the PLC and other electrical control systems, which drive the machining tool 4 to rotate at high speed. Then, the bidirectional motor 8 is started, which drives the threaded rods 5 on both sides to rotate. Under the restriction of the limit post 6, the moving table 3 screwed on the threaded rods 5 on both sides drives the machining tool 4 below to move in the opposite direction to achieve synchronous machining.

[0021] Through the above steps, a relative moving stage 3 and a machining tool 4 installed below the moving stage 3 are set up. The limiting post 6 can guide the movement and rotate two threaded rods 5 with opposite thread structures. This enables the two machining tools 4 to move synchronously in opposite directions and perform synchronous machining on both sides of the cylinder head inside, thereby improving the machining efficiency of the cylinder head cam hole. This solves the problem that the existing moving tools installed on the machine tool can only perform drilling in one direction, resulting in low machining efficiency.

Claims

1. A machine tool for machining cylinder head cam holes, comprising a machine tool support table (1); characterized in that: It also includes a first support frame (2) and a moving table (3). A cylinder head is fixed on the machine tool support table (1). Two machining tools (4) located inside the cylinder head and facing each other are set above the machine tool support table (1). A moving table (3) is installed above the machining tools (4). The first support frame (2) is movably connected between the two moving tables (3). Two threaded rods (5) with opposite thread structures are rotatably connected on the left and right sides of the first support frame (2). Limiting posts (6) are fixedly connected on the left and right sides of the first support frame (2). A limiting ring (7) is fixedly connected on the side of the threaded rod (5) away from the first support frame (2). A screw hole matching the threaded rod (5) is opened on the moving table (3). The moving table (3) is sleeved on the outside of the limiting post (6). The moving table (3) is set between the limiting ring (7) and the first support frame (2).

2. The machine tool for machining cylinder head cam holes according to claim 1, characterized in that: A bidirectional motor (8) is installed inside the No. 1 support frame (2). Two threaded rods (5) are connected to the output end of the bidirectional motor (8). The bidirectional motor (8) is used to drive the threaded rods (5) to rotate.

3. The machine tool for machining cylinder head cam holes according to claim 1, characterized in that: Two rotary motors (9) are installed at the bottom of the two moving tables (3). A support ring (10) is fixedly connected to the output end of the rotary motor (9). The rotary motor (9) is used to drive the machining tool (4) to rotate.

4. The machine tool for machining cylinder head cam holes according to claim 3, characterized in that: One end of the machining tool (4) is fixedly connected to a mounting ring (11) that is close to the support ring (10). An anchoring hole (12) is opened on both the support ring (10) and the mounting ring (11).

5. The machine tool for machining cylinder head cam holes according to claim 4, characterized in that: The bottom of the mobile platform (3) is fixedly connected to a No. 1 positioning column (13), and a No. 1 positioning hole (14) is opened on the rotary motor (9). A No. 2 anchoring hole (15) is opened on the No. 1 positioning column (13).

6. The machine tool for machining cylinder head cam holes according to claim 1, characterized in that: A second support frame (16) is installed on the machine tool support table (1). An electric push rod (17) is installed at the bottom of the second support frame (16). The first support frame (2) is fixedly connected to the output end of the electric push rod (17). The electric push rod (17) is used to drive the first support frame (2) to move.

7. The machine tool for machining cylinder head cam holes according to claim 6, characterized in that: The bottom end of the second support frame (16) is fixedly connected to the second positioning column (18). The electric push rod (17) is provided with the second positioning hole (19) that matches the second positioning column (18). The second positioning column (18) is provided with the third anchoring hole (20).

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