Crankcase bearing hole machining method

Abstract

The invention relates to the technical field of crankcase bearing hole machining, in particular to a crankcase bearing hole machining method, and solves the problems that when a crankcase bearing hole is machined, a milling cutter needs to be used for milling and penetrating a crankcase, the consumed time is long, and damage to the milling cutter is large. The invention discloses a crankcase bearing hole machining method. The method comprises the steps that S1, a crankcase to be machined is placed on a machine tool table top of a numerical control machine tool; s2, the crankcase is leveled in the X direction and the Y direction, and the flatness of the surface of the crankcase is adjusted; s3, the leveled crankcase is fixed, and a milling cutter is added into a tool magazine of the numerical control machine tool; and S4, the supporting rod is placed in the crankcase, and it is guaranteed that the axis of the supporting rod coincides with the axis of the bearing hole of the crankcase. When the bearing hole of the crankcase is machined, a through circular ring is milled at the position of the bearing hole of the crankcase, so that the milling time is shortened, the working efficiency is improved, and the damage of the milling cutter in the milling process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of crankcase bearing hole machining, in particular to a crankcase bearing hole machining method. Background Art

[0002] With the rapid development of social economy,.

[0003] However, when machining the crankcase bearing hole, a milling cutter needs to be used to mill through the crankcase, which takes a long time and causes great damage to the milling cutter; therefore, it does not meet the existing needs. In this regard, we propose a crankcase bearing hole machining method. Summary of the invention

[0004] The purpose of the present invention is to provide a crankcase bearing hole processing method to solve the problems raised in the above background technology that when processing the crankcase bearing hole, a milling cutter needs to be used to mill through the crankcase, which takes a long time and causes great damage to the milling cutter.

[0005] To achieve the above object, the present invention provides the following technical solution: a crankcase bearing hole processing method, comprising the following steps: S1: placing the crankcase to be processed on the machine table of the CNC machine tool; S2: Level the crankcase in X and Y directions and adjust the flatness of the crankcase surface; S3: Fix the leveled crankcase and add the milling cutter into the tool magazine of the CNC machine tool; S4: placing the support rod inside the crankcase, ensuring that the axis of the support rod coincides with the axis of the crankcase bearing hole, and adjusting the support rod so that both ends of the support rod are fixed to the inner wall of the crankcase; S5: Take out the milling cutter from the tool magazine and complete the tool setting operation; S6: After the tool setting is completed, the milling program is input and the CNC machine tool is started to perform milling on the crankcase; S7: During the milling process, it is necessary to continuously spray coolant on the crankcase processing part; S8: After the milling process is completed, the CNC machine tool is turned on, the support rod is taken out from the crankcase, and the milling waste is removed from the end of the support rod to complete the processing of the crankcase bearing hole.

[0006] Preferably, the milling cutter comprises a tool handle, and the tool handle is detachably mounted on a spindle of an output machine tool, and a blade fixing seat is fixed to the bottom end of the tool handle.

[0007] Preferably, the blade fixing seat is in an inverted U-shape and blades are detachably mounted on the outer sides of both ends, and the blades are connected to the blade fixing seat by screws.

[0008] Preferably, the support rod includes a storage rod, and adjustment rods are slidably mounted on both end portions of the storage rod. An electromagnet is fixedly embedded in the outer end of the adjustment rod, and the storage rod, the adjustment rod and the inner wall of the crankcase are connected and fixed by the electromagnet.

[0009] Preferably, an adjusting screw is fixed to the end of the adjusting rod that is slidably inserted inside the storage rod, and an adjusting ring is rotatably mounted on the outer side of the storage rod.

[0010] Preferably, a rotating gear ring is fixed on the inner surface of the adjustment ring, the rotating gear ring is rotatably connected to the storage rod, the inner side of the rotating gear ring is meshingly connected to two transmission gears, and an internal threaded sleeve is fixed through the middle of the two transmission gears.

[0011] Preferably, the end of the internally threaded sleeve is connected to the storage rod via a roller bearing, and the adjusting screw penetrates the internally threaded sleeve and is transmitted to the internally threaded sleeve via a thread.

[0012] Preferably, the positions of the two adjusting screws are rotationally symmetrical, and the threads on the outer surfaces of the two adjusting screws have completely opposite rotation directions.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention utilizes the CNC machine tool spindle to drive the tool handle, the blade fixing seat and the blade to rotate at high speed, and opens an annular through groove on the crankcase surface, without milling all the materials at the crankcase bearing hole, thereby shortening the milling time in the crankcase bearing and increasing the processing time of the crankcase bearing hole; 2. The present invention places an adjusting ring, a receiving rod, an adjusting rod and an electromagnet inside the crankcase, and rotates the adjusting ring so that two adjusting rods extend from the ends of the receiving rod and are pressed against the inner wall of the crankcase. When the electromagnet is energized, the crankcase is magnetically adsorbed to ensure that when the crankcase bearing hole is milled, the waste generated by milling will not shake, vibrate or shift in position, thereby ensuring safety and stability during the machining of the crankcase bearing hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a processing flow chart of the present invention; Figure 2 It is a schematic diagram of the structure of the milling cutter and the support rod of the present invention; Figure 3 It is a schematic diagram of the structure of the knife handle of the present invention; Figure 4 It is a structural schematic diagram of the storage rod of the present invention; Figure 5 It is a structural cross-sectional view of the storage rod of the present invention; Figure 6 It is a schematic cross-sectional view of the adjustment ring of the present invention.

[0015] In the figure: 1. milling cutter; 11. tool handle; 12. blade fixing seat; 13. blade; 2. support rod; 21. adjustment ring; 22. storage rod; 23. adjustment rod; 24. electromagnet; 25. rotating gear ring; 26. transmission gear; 27. internal threaded sleeve; 28. adjustment screw. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] like Figure 1 As shown, a crankcase bearing hole processing method comprises the following steps: S1: placing the crankcase to be processed on the machine table of the CNC machine tool; S2: Level the crankcase in X and Y directions and adjust the flatness of the crankcase surface; S3: Fix the leveled crankcase and add the milling cutter 1 into the tool magazine of the CNC machine tool; S4: placing the support rod 2 inside the crankcase, ensuring that the axis of the support rod 2 coincides with the axis of the crankcase bearing hole, and adjusting the support rod 2 so that both ends of the support rod 2 are fixed to the inner wall of the crankcase; S5: call out the milling cutter 1 from the tool magazine and complete the tool setting operation; S6: After the tool setting is completed, the milling program is input and the CNC machine tool is started to perform milling on the crankcase; S7: During the milling process, it is necessary to continuously spray coolant on the crankcase processing part; S8: After the milling process is completed, the CNC machine tool is turned on, the support rod 2 is taken out from the crankcase, and the milling waste is removed from the end of the support rod 2 to complete the processing of the crankcase bearing hole.

[0018] like Figure 2 and Figure 3 As shown, the milling cutter 1 includes a tool handle 11, which is detachably mounted on the spindle of the output machine tool. A blade fixing seat 12 is fixed to the bottom end of the tool handle 11. The blade fixing seat 12 is inverted U-shaped and has blades 13 detachably mounted on the outer sides of both ends. The blade 13 is connected to the blade fixing seat 12 by screws. The spindle of the CNC machine tool drives the tool handle 11, the blade fixing seat 12 and the blade 13 to rotate at a high speed, and an annular through groove is opened on the surface of the crankcase, thereby shortening the milling time in the crankcase bearing.

[0019] The support rod 2 includes a storage rod 22, and adjusting rods 23 are slidably installed at both ends of the storage rod 22. The outer end of the adjusting rod 23 is fixedly embedded with an electromagnet 24. The storage rod 22, the adjusting rod 23 and the inner wall of the crankcase are connected and fixed by the electromagnet 24. The storage rod 22, the adjusting rod 23 and the electromagnet 24 are used to adsorb and fix the waste at the bearing hole from the inside of the crankcase to avoid splashing caused by contact between the waste at the bearing hole and the blade 13 during milling, thereby ensuring production safety.

[0020] like Figure 2 , Figures 4 to 6 As shown, an adjusting screw 28 is fixed to the end of the adjusting rod 23 which is slidably inserted in the storage rod 22, an adjusting ring 21 is rotatably installed on the outer side of the storage rod 22, a rotating gear ring 25 is fixed to the inner surface of the adjusting ring 21, the rotating gear ring 25 is rotatably connected to the storage rod 22, and two transmission gears 26 are meshedly connected to the inner side of the rotating gear ring 25, an internally threaded sleeve 27 is fixed through the middle of the two transmission gears 26, the end of the internally threaded sleeve 27 is connected to the storage rod 22 through a roller bearing, the adjusting screw 28 penetrates the internally threaded sleeve 27 and is threadedly driven with the internally threaded sleeve 27, the two adjusting screws 28 are rotationally symmetrical in position, and the threads on the outer surfaces of the two adjusting screws 28 are completely opposite in rotation direction, the transmission gear 26 and the internally threaded sleeve 27 are rotated by rotating the adjusting ring 21 and the rotating gear ring 25, so that the two adjusting screws 28 move in opposite or similar directions, and the spacing between the two adjusting rods 23 is adjusted, so as to provide internal support for crankcases of different sizes.

[0021] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A method for machining a crankcase bearing hole, characterized in that: The following steps are involved: S1: placing the crankcase to be processed on the machine table of the CNC machine tool; S2: Level the crankcase in X and Y directions and adjust the flatness of the crankcase surface; S3: Fixing the leveled crankcase and adding the milling cutter (1) to the tool magazine of the CNC machine tool; S4: placing the support rod (2) inside the crankcase, ensuring that the axis of the support rod (2) coincides with the axis of the crankcase bearing hole, and adjusting the support rod (2) so that both ends of the support rod (2) are fixed to the inner wall of the crankcase; S5: The milling cutter (1) is taken out from the tool magazine and the tool setting operation is completed; S6: After the tool setting is completed, the milling program is input and the CNC machine tool is started to perform milling on the crankcase; S7: During the milling process, it is necessary to continuously spray coolant on the crankcase processing part; S8: After the milling process is completed, the CNC machine tool is turned on, the support rod (2) is removed from the crankcase, and the milling waste is removed from the end of the support rod (2), thereby completing the processing of the crankcase bearing hole.

2. A crankcase bearing hole machining method according to claim 1, characterized in that: The milling cutter (1) comprises a tool handle (11), the tool handle (11) being detachably mounted on a main shaft of an output machine tool, and a blade fixing seat (12) being fixed to the bottom end of the tool handle (11).

3. A crankcase bearing hole machining method according to claim 2, characterized in that: The blade fixing seat (12) is in an inverted U-shape and has blades (13) detachably mounted on the outer sides of both ends; the blade (13) is connected to the blade fixing seat (12) via screws.

4. A crankcase bearing hole machining method according to claim 1, characterized in that: The support rod (2) comprises a storage rod (22), and adjustment rods (23) are slidably mounted on both ends of the storage rod (22). An electromagnet (24) is fixedly embedded on the outer end of the adjustment rod (23), and the storage rod (22), the adjustment rod (23) and the inner wall of the crankcase are connected and fixed via the electromagnet (24).

5. A crankcase bearing hole machining method according to claim 4, characterized in that: An adjusting screw rod (28) is fixed to the end of the adjusting rod (23) which is slidably inserted inside the storage rod (22), and an adjusting ring (21) is rotatably mounted on the outer side of the storage rod (22).

6. A crankcase bearing hole machining method according to claim 5, characterized in that: A rotating gear ring (25) is fixed on the inner surface of the adjustment ring (21), and the rotating gear ring (25) is rotatably connected to the storage rod (22). Two transmission gears (26) are meshedly connected to the inner side of the rotating gear ring (25), and an internally threaded sleeve (27) is fixedly passed through the middle of the two transmission gears (26).

7. A crankcase bearing hole machining method according to claim 6, characterized in that: The end of the internally threaded sleeve (27) is connected to the storage rod (22) via a roller bearing, and the adjusting screw (28) passes through the internally threaded sleeve (27) and is threadedly driven with the internally threaded sleeve (27).

8. A crankcase bearing hole machining method according to claim 7, characterized in that: The two adjusting screw rods (28) are rotationally symmetrical in position, and the threads on the outer surfaces of the two adjusting screw rods (28) have completely opposite rotation directions.

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