CN113814438A - Motorcycle crankcase bearing hole machining method - Google Patents
Motorcycle crankcase bearing hole machining method Download PDFInfo
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- CN113814438A CN113814438A CN202111213466.6A CN202111213466A CN113814438A CN 113814438 A CN113814438 A CN 113814438A CN 202111213466 A CN202111213466 A CN 202111213466A CN 113814438 A CN113814438 A CN 113814438A
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- boring
- blade
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- boring cutter
- fine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/20—Automatic control or regulation of feed movement, cutting velocity or position of tool or work before or after the tool acts upon the workpiece
- B23Q15/22—Control or regulation of position of tool or workpiece
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- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention relates to the technical field of motorcycle crankcase processing, in particular to a method for processing a bearing hole of a motorcycle crankcase, which comprises the following steps: making a cutter; carrying out tool setting by adopting a tool setting instrument; and installing the tool after tool setting on a tool position of machine tool equipment according to the requirements of a machining program, and then installing the crankcase to be machined for machining. A cutter with a rough boring mechanism and a fine boring mechanism is used for machining a bearing hole of a motorcycle crankcase on a machine tool, so that the required precision can be obtained by one-time machining. The invention has the advantages of saving processing time, improving processing efficiency, reducing the use of cutters and reducing processing cost, along with simple mechanism and flexible, quick and reliable adjustment and use.
Description
Technical Field
The invention relates to the technical field of motorcycle crankcase processing, in particular to a method for processing a bearing hole of a motorcycle crankcase.
Background
The crankcase of motorcycle is a box body for mounting engine crankshaft and other transmission components on motorcycle, when it is produced, it generally adopts die-casting formation to obtain blank, then adopts machining mode to process bearing hole so as to implement mounting of bearing. 1mm of machining allowance is left on one side of a hole after the bearing hole of the motorcycle crankcase is formed by die casting. Meanwhile, the hole diameter has higher processing precision requirement due to the assembly requirement, and the tolerance is generally between 0.015 and 0.030 (7-level precision). When a hole is machined, a boring cutter is adopted to machine on a machine tool, according to a normal hole machining process, the hole diameter cannot be machined in place once by 1mm of machining allowance, the size precision is guaranteed, one boring cutter is used for rough machining, the allowance above 2/3 is removed, a single side is left to be 0.2-0.3mm, the depth of the hole is machined in place, then one boring cutter is replaced for finish machining, the depth of a blade and the rough machining depth are left to be 0.06-0.15mm, the finish machining blade is guaranteed not to be in contact with the bottom, and the size precision of the hole diameter can be guaranteed. Therefore, the existing motorcycle crankcase bearing hole processing can be finished only by rough machining and finish machining of two cutters.
However, the method has the disadvantages of long processing time, low processing efficiency, excessive use of cutters and increased processing cost.
Disclosure of Invention
The invention provides a method for machining a bearing hole of a motorcycle crankcase, and aims to solve the problems that in the prior art, the machining time is long, the machining efficiency is low, too many cutters are used, and the machining cost is increased.
The invention provides a method for processing a bearing hole of a motorcycle crankcase, which comprises the following steps: making a cutter;
carrying out tool setting by adopting a tool setting instrument;
and installing the tool after tool setting on a tool position of machine tool equipment according to the requirements of a machining program, and then installing the crankcase to be machined for machining.
Wherein, in the process of manufacturing the cutter:
the cutter comprises a cutter body integrally in a revolving body structure, a cutter handle is arranged at the upper end of the cutter body, a connecting hole used for being connected and installed with a machine tool is formed in the end part of the cutter handle, a cylinder used for arranging a blade is arranged at the lower end of the cutter handle, and a rough boring mechanism and a fine boring mechanism are oppositely arranged on the outer side surface of the cylinder;
the heavy boring mechanism comprises a heavy boring cutter rest mounting groove, the heavy boring cutter rest mounting groove is provided with two vertical intersected side walls, the lower end of the heavy boring cutter rest mounting groove is a first open end, a heavy boring cutter rest is mounted in the heavy boring cutter rest mounting groove, a first vertical screw hole is formed in the upper end face of the heavy boring cutter rest, a heavy boring height adjusting screw is mounted in the first vertical screw hole in a matched mode, a transverse first adjusting insertion hole is formed in the screw head portion of the upper end of the heavy boring height adjusting screw, the screw head portion of the screw head portion abuts against the inner wall of the upper end of the heavy boring cutter rest mounting groove, the heavy boring cutter rest is further provided with a first vertical bar hole which is right opposite to one side wall of the heavy boring cutter rest mounting groove, a heavy boring cutter rest pressing screw is further arranged on the heavy boring cutter rest, and after the heavy boring cutter rest pressing screw penetrates through the first vertical bar hole, the heavy boring cutter rest is in threaded connection with one screw hole in the side wall and tightly presses and fixes the heavy boring cutter rest, the lower part of the rough boring cutter rest is also provided with a rough boring aperture adjusting screw hole which is opposite to the other side wall, a rough boring aperture adjusting screw is further in threaded fit in the rough boring aperture adjusting screw hole, a first adjusting slot is arranged on the outer end face of the rough boring aperture adjusting screw, a first clearance space is reserved between the upper part of the rough boring cutter rest and the other side wall, a rough boring blade mounting groove is further formed in the outer surface of the side wall of the lower part of the rough boring cutter rest, which is far away from the screw hole, a rough boring blade is arranged in the rough boring blade mounting groove, the rough boring blade is transversely fixedly connected in the rough boring blade mounting groove through a transversely arranged rough boring blade pressing screw, and the cutting edge of the lower part of the rough boring blade extends downwards to form a cylinder and the cutting edge outside the rough boring cutter rest.
Wherein the fine boring mechanism comprises a fine boring tool rest mounting groove which is provided with two vertically intersected side walls, the lower end of the fine boring tool rest mounting groove is a second open end, a fine boring tool rest is mounted in the fine boring tool rest mounting groove, the upper end surface of the fine boring tool rest is provided with a second vertical screw hole, a fine boring height adjusting screw is mounted in the second vertical screw hole in a matching manner, a transverse second adjusting jack is arranged at the screw head part of the upper end of the fine boring height adjusting screw and abuts against the inner wall of the upper end of the fine boring tool rest mounting groove, the fine boring tool rest is also provided with a second vertical bar hole which is opposite to one side wall of the fine boring tool rest mounting groove, a fine boring tool rest pressing screw is further arranged on the fine boring tool rest, and the fine boring tool rest pressing screw is in a screw hole on the side wall and is pressed and fixed after penetrating through the second vertical bar hole, the fine boring cutter frame is characterized in that a fine boring aperture adjusting screw hole which is right opposite to the other side wall is further formed in the lower portion of the fine boring cutter frame, a fine boring aperture adjusting screw is in threaded fit with the fine boring aperture adjusting screw hole, a second adjusting slot is formed in the outer end face of the fine boring aperture adjusting screw, a second gap space is reserved between the upper portion of the fine boring cutter frame and the other side wall, a fine boring cutter blade mounting groove is further formed in the outer surface of the side wall, away from the screw hole, of the lower portion of the fine boring cutter frame, a fine boring cutter blade is arranged in the fine boring cutter blade mounting groove, the fine boring cutter blade is transversely fixedly connected in the fine boring cutter blade mounting groove in a penetrating mode through a transversely arranged fine boring cutter blade pressing screw, a cylinder is downwardly extended from a cutting edge of the lower portion of the fine boring cutter blade, and an outer side surface of the fine boring cutter frame is outwardly extended from a cutting edge.
Wherein, adopt the tool setting appearance to carry out the tool setting, the tool setting body step is:
installing a cutter on a tool setting gauge;
installing the rough boring cutter frame in a rough boring cutter frame installation groove, screwing down a rough boring cutter frame compression screw for fixing, and then installing a rough boring blade in a rough boring blade installation groove and fixing by the rough boring blade compression screw; installing the fine boring cutter frame in a fine boring cutter frame installation groove, screwing down a fine boring cutter frame compression screw for fixing, and then installing a fine boring blade in a fine boring blade installation groove and fixing by the fine boring blade compression screw;
aligning the blade point outside the edge of the rough boring blade on a display screen of a tool setting gauge, loosening a compression screw of a rough boring cutter frame, inserting an adjusting rod into an adjusting jack, horizontally rotating to adjust a rough boring height adjusting screw, enabling the head of the screw at the upper end of the rough boring cutter frame to be abutted against the inner wall at the upper end of an installing groove of the rough boring cutter frame, and adjusting the position of the rough boring cutter frame in the height direction, so that the position of the edge of the rough boring blade can meet the requirement of the processing depth of a bearing hole; then an adjusting screwdriver is inserted into a first adjusting slot at the outer end of the rough boring aperture adjusting screw to rotate and adjust, so that the lower end of the rough boring cutter frame rotates around the rough boring cutter frame pressing screw to change the position of the blade outside the blade edge of the rough boring blade in the circumferential direction, the distance between the blade outside the blade edge of the rough boring blade and the axis is ensured to be at a position where the aperture machining size is smaller by 0.2mm, and then the rough boring cutter frame pressing screw is screwed tightly to fix the rough boring cutter frame firmly;
aligning the blade point outside the edge of the fine boring blade on a display screen of a tool setting gauge, loosening a compression screw of a fine boring cutter frame, horizontally rotating and adjusting a fine boring height adjusting screw after an adjusting rod is inserted into an adjusting jack, enabling the head of the screw at the upper end of the fine boring cutter frame to be abutted against the inner wall at the upper end of an installing groove of the fine boring cutter frame and adjusting the position of the fine boring cutter frame in the height direction, so that the height position of the cutting edge of the fine boring blade is retracted upwards by 0.06-0.15mm compared with the cutting edge of the rough boring blade, then an adjusting screwdriver is inserted into a second adjusting slot at the outer end of the fine boring aperture adjusting screw to rotate and adjust, the lower end of the fine boring cutter frame rotates around a fine boring cutter frame compression screw to change the circumferential position of the outer edge point of the cutting edge of the fine boring blade, so that the distance between the outer edge point of the cutting edge of the fine boring blade and the axis is consistent with the processing size of the aperture, and then the fine boring cutter frame compression screw is screwed tightly to fix the fine boring cutter frame firmly;
and (5) taking down the cutter to complete cutter setting.
Wherein, install the cutter after the tool setting on lathe equipment tool position according to the program requirement of processing, then install and wait to process the crankcase, carry out the step of processing in:
during machining, the cutting edge of a rough boring blade in the cutter is firstly contacted with a crankcase for rough machining and milling, after the cutter is fed for a distance of 0.06-0.15mm, the cutting edge of a fine boring blade is simultaneously contacted with a rough machining and milling groove on the crankcase for finish machining and milling, and the rough machining and the finish machining of a bearing hole of the crankcase are simultaneously completed by one-time feeding stroke of a main shaft of the machine tool.
The invention relates to a motorcycle crankcase bearing hole processing method, which adopts the technical scheme that after a rough boring mechanism and a fine boring mechanism are simultaneously arranged on the same cutter body, the rough boring mechanism and the fine boring mechanism can be flexibly adjusted and adjusted in tool setting during use, so that a rough boring blade can be firstly contacted with a workpiece during processing and mill the rough boring processing amount in the circumferential direction, and then a fine boring blade is contacted with the workpiece again and mill the fine boring processing amount in the circumferential direction, thus the processing of the crankcase bearing hole can be completed at one time. In the adopted cutter, the distances of the rough boring and the fine boring cutting edges in the height direction and the diameter direction can be flexibly and quickly adjusted, the optimal machining amount can be conveniently determined through test quick adjustment, and the machining effect can be better achieved through one-time machining. The fine boring machine has the advantages of being convenient and fast to adjust, flexible, reliable and simple in structure, and meanwhile, the positions of fine boring and rough boring can be flexibly changed through adjustment according to requirements so as to meet machining requirements. The cutter realizes the integration of rough machining and finish machining on one cutter, so that the rough machining and the finish machining are carried out simultaneously, and the machining time of 1/2 is saved by machining one hole; in addition, two cutters are changed into one cutter for machining one hole, one cutter is saved, the manufacturing cost of the rough and fine integrated cutter is higher than that of a rough and fine single cutter, and the cost of a boring cutter is saved by more than 1/3 after the rough and fine integrated cutter is adopted. The invention has the advantages of saving processing time, improving processing efficiency, reducing the use of cutters, reducing processing cost, simple mechanism, flexible, quick and reliable adjustment and use and the like.
Drawings
Fig. 1 is a schematic structural view of a cutter used in the present invention.
The boring cutter comprises a cutter body 1, a cutter handle 2, a cylinder 3, a rough boring cutter frame 41, a rough boring height adjusting screw 42, a first adjusting insertion hole 43, a rough boring cutter frame pressing screw 44, a rough boring diameter adjusting screw hole 45, a first clearance space 46, a rough boring blade 47, a rough boring blade 48, a rough boring blade pressing screw 51, a fine boring cutter frame 52, a fine boring height adjusting screw 53, a second adjusting insertion hole 54, a fine boring cutter frame pressing screw 54, a fine boring diameter adjusting screw hole 55, a second clearance space 56, a fine boring blade 57 and a fine boring blade 58.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
The present invention will be described in further detail below with reference to the accompanying drawings and a processing method using the apparatus of the present invention.
In the specific implementation:
the invention provides a motorcycle crankcase bearing hole processing method, which adopts a cutter simultaneously provided with a rough boring mechanism and a fine boring mechanism to process a motorcycle crankcase bearing hole on a machine tool so as to obtain required precision by one-time processing, and specifically comprises the following steps:
a. obtaining a cutter with the following structure, as shown in fig. 1, wherein the cutter comprises a cutter body 1 which is integrally in a revolving body structure, the upper end of the cutter body 1 is a cutter handle 2, the end part of the cutter handle 2 is provided with a connecting hole for connecting and installing with a machine tool, the lower end of the cutter handle 2 is provided with a cylinder 3 for arranging a blade, and the outer side surface of the cylinder 3 is relatively provided with a rough boring mechanism and a fine boring mechanism; the whole length and the outer diameter of the cutter body are determined according to the depth and the size of the processed hole (generally, the length and the outer diameter of the cylinder are slightly smaller than the depth and the size of the processed hole according to experience so as to leave allowance for the blade);
the heavy boring mechanism comprises a heavy boring cutter rest mounting groove, the heavy boring cutter rest mounting groove is provided with two vertical intersecting side walls, the lower end of the heavy boring cutter rest mounting groove is a first open end, a heavy boring cutter rest 41 is mounted in the heavy boring cutter rest mounting groove, a first vertical screw hole is formed in the upper end face of the heavy boring cutter rest 41, a heavy boring height adjusting screw 42 is mounted in the first vertical screw hole in a matched mode, a transverse first adjusting insertion hole 43 is formed in the screw head at the upper end of the heavy boring height adjusting screw 42, the screw head abuts against the inner wall of the upper end of the heavy boring cutter rest mounting groove, a first vertical strip hole which is opposite to one side wall of the heavy boring cutter rest mounting groove is further formed in the heavy boring cutter rest 41, a heavy boring cutter rest pressing screw 44 is further arranged on the heavy boring cutter rest 41, and after the heavy boring cutter rest pressing screw 44 penetrates through the first vertical strip hole, the heavy boring cutter rest pressing screw is in threaded connection with one screw hole in the side wall and presses and fixes the heavy boring cutter rest 41, the lower part of the rough boring cutter rest 41 is also provided with a rough boring aperture adjusting screw hole 45 which is opposite to the other side wall, a rough boring aperture adjusting screw is further in threaded fit with the inner part of the rough boring aperture adjusting screw hole 45, a first adjusting slot is arranged on the outer end face of the rough boring aperture adjusting screw, a first clearance space 46 is reserved between the upper part of the rough boring cutter rest 41 and the other side wall, a rough boring blade mounting groove is further formed in the outer surface of the side wall of the lower part of the rough boring cutter rest 41, which is far away from the screw hole, a rough boring blade 47 is arranged in the rough boring blade mounting groove, the rough boring blade 47 is transversely fixedly connected in the rough boring blade mounting groove by a transversely arranged rough boring blade compression screw 48 in a penetrating manner, the cutting edge at the lower part of the rough boring blade 47 extends downwards to form a cylinder 3, and the cutting edge outside the cutting edge extends outwards to form the outer side surface of the rough boring cutter rest 41;
the fine boring mechanism comprises a fine boring cutter frame mounting groove, the fine boring cutter frame mounting groove is provided with two vertical intersected side walls, the lower end of the fine boring cutter frame mounting groove is a second open end, a fine boring cutter frame 51 is mounted in the fine boring cutter frame mounting groove, a second vertical screw hole is formed in the upper end face of the fine boring cutter frame 51, a fine boring height adjusting screw 52 is mounted in the second vertical screw hole in a matched mode, a transverse second adjusting insertion hole 53 is formed in the screw head portion of the upper end of the fine boring height adjusting screw 52 and abuts against the inner wall of the upper end of the fine boring cutter frame mounting groove, a second vertical bar hole which is opposite to one side wall of the fine boring cutter frame mounting groove is further formed in the fine boring cutter frame, a fine boring cutter frame pressing screw 54 is further arranged on the fine boring cutter frame, the fine boring cutter frame pressing screw 54 is in a screw hole in the side wall after penetrating through the second vertical bar hole, and is in threaded connection with the fine boring cutter frame 51 in a pressing mode, the lower part of the fine boring cutter holder 51 is also provided with a fine boring aperture adjusting screw hole 55 which is opposite to the other side wall, a fine boring aperture adjusting screw is in threaded fit with the inner part of the fine boring aperture adjusting screw hole 55, a second adjusting slot is arranged on the outer end face of the fine boring aperture adjusting screw, a second gap space 56 is reserved between the upper part of the fine boring cutter holder 51 and the other side wall, a fine boring cutter blade mounting groove is also formed in the outer surface of the side wall of the lower part of the fine boring cutter holder 51, which is far away from the screw hole, a fine boring cutter blade 57 is arranged in the fine boring cutter blade mounting groove, the fine boring cutter blade 57 is transversely fixedly connected in the fine boring cutter blade mounting groove by a transversely arranged fine boring cutter blade compression screw 58 in a penetrating manner, the cutting edge at the lower part of the fine boring cutter blade 57 extends downwards to form the cylinder 3, and the cutting edge outside of the cutting edge extends outwards to form the outer side surface of the fine boring cutter holder 51;
b. adopting a tool setting gauge to set a tool, wherein the tool setting step comprises:
1. installing a cutter on a tool setting gauge;
2. mounting the rough boring cutter holder 41 in a rough boring cutter holder mounting groove and screwing down a rough boring cutter holder compression screw 44 for fixation, and mounting the rough boring blade 47 in the rough boring blade mounting groove and fixing by a rough boring blade compression screw 48; installing the fine boring tool holder 51 in the fine boring tool holder mounting groove and screwing down the fine boring tool holder compression screw 54 for fixation, and then installing the fine boring blade 57 in the fine boring blade mounting groove and fixing by the fine boring blade compression screw 58;
3. aligning the blade point at the outer side of the edge of the rough boring blade 47 on a display screen of a tool setting gauge, loosening a compression screw 44 of a rough boring cutter frame, inserting an adjusting rod into a first adjusting insertion hole 43, horizontally rotating and adjusting a rough boring height adjusting screw 42, enabling the screw head at the upper end of the rough boring cutter frame to be abutted against the inner wall at the upper end of a mounting groove of the rough boring cutter frame and adjusting the position of the rough boring cutter frame 41 in the height direction, and enabling the position of the edge of the rough boring blade 47 to meet the requirement of the processing depth of a bearing hole; then an adjusting screwdriver is inserted into a first adjusting slot at the outer end of the rough boring aperture adjusting screw to rotate and adjust, so that the lower end of a rough boring cutter frame 41 rotates around a rough boring cutter frame pressing screw 44 to change the position of the blade outside edge of the rough boring blade 47 in the circumferential direction, and the distance between the blade outside edge of the rough boring blade 47 and the axis is ensured to be at the position where the aperture machining size is smaller by 0.2 mm; then the rough boring cutter frame compression screw 44 is screwed tightly to fix the rough boring cutter frame 41 firmly;
4. aligning the blade point at the outer side of the edge of the fine boring blade 57 on a display screen of a tool setting gauge, loosening a compression screw 54 of the fine boring blade holder, inserting an adjusting rod into a second adjusting insertion hole 53, horizontally rotating and adjusting a fine boring height adjusting screw 52, enabling the head of the screw at the upper end of the screw to be abutted against the inner wall at the upper end of a mounting groove of the fine boring blade holder and adjusting the position of the fine boring blade holder 51 in the height direction, and enabling the height position of the edge of the fine boring blade 57 to retract upwards by 0.06-0.15mm compared with the edge of the rough boring blade 47; then, an adjusting screwdriver is inserted into a second adjusting slot at the outer end of the fine boring aperture adjusting screw to rotate and adjust, so that the lower end of a fine boring tool rest 51 rotates around a fine boring tool rest pressing screw 54 to change the position of the outer side edge tip of the cutting edge of the fine boring blade 57 in the circumferential direction, and the distance between the outer side edge tip of the cutting edge of the fine boring blade 57 and the axis is ensured to be consistent with the aperture machining size; then the fine boring tool holder pressing screw 54 is screwed down to firmly fix the fine boring tool holder 51;
5. taking down the cutter to complete tool setting;
c. the tool after tool setting is installed on a tool position of machine tool equipment according to the requirements of a machining program, then a crankcase to be machined is installed for machining, the cutting edge of a rough boring blade 47 in the tool is firstly contacted with the crankcase for rough machining and milling during machining, the cutting edge of a fine boring blade 57 is contacted with a rough machining and milling groove on the crankcase for finish machining and milling after the tool is fed for 0.06-0.15mm, and the rough machining and the finish machining of a bearing hole of the crankcase are completed simultaneously by one-time feeding stroke of a main shaft of the machine tool.
During specific implementation, in the rough boring blade mounting groove and the fine boring blade mounting groove, the size, the angle and the threads of the mounting grooves are consistent with the type of the blade to be mounted.
In addition, during specific implementation, because the size of the cutter adjusted according to the cutter setting gauge has a certain error with the size of an actual processing hole, after a first workpiece is processed, the size of the hole diameter needs to be detected, and the cutter is adjusted according to the actual size of the hole diameter, so that the product is better ensured to be qualified.
The invention relates to a motorcycle crankcase bearing hole processing method, which adopts the technical scheme that after a rough boring mechanism and a fine boring mechanism are simultaneously arranged on the same cutter body, the rough boring mechanism and the fine boring mechanism can be flexibly adjusted and adjusted in tool setting during use, so that a rough boring blade can be firstly contacted with a workpiece during processing and mill the rough boring processing amount in the circumferential direction, and then a fine boring blade is contacted with the workpiece again and mill the fine boring processing amount in the circumferential direction, thus the processing of the crankcase bearing hole can be completed at one time. In the adopted cutter, the distances of the rough boring and the fine boring cutting edges in the height direction and the diameter direction can be flexibly and quickly adjusted, the optimal machining amount can be conveniently determined through test quick adjustment, and the machining effect can be better achieved through one-time machining. The fine boring machine has the advantages of being convenient and fast to adjust, flexible, reliable and simple in structure, and meanwhile, the positions of fine boring and rough boring can be flexibly changed through adjustment according to requirements so as to meet machining requirements. The cutter realizes the integration of rough machining and finish machining on one cutter, so that the rough machining and the finish machining are carried out simultaneously, and the machining time of 1/2 is saved by machining one hole; in addition, two cutters are changed into one cutter for machining one hole, one cutter is saved, the manufacturing cost of the rough and fine integrated cutter is higher than that of a rough and fine single cutter, and the cost of a boring cutter is saved by more than 1/3 after the rough and fine integrated cutter is adopted. The invention has the advantages of saving processing time, improving processing efficiency, reducing the use of cutters, reducing processing cost, simple mechanism, flexible, quick and reliable adjustment and use and the like.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (5)
1. A motorcycle crankcase bearing hole processing method is characterized in that: the method comprises the following steps:
making a cutter;
carrying out tool setting by adopting a tool setting instrument;
and installing the tool after tool setting on a tool position of machine tool equipment according to the requirements of a machining program, and then installing the crankcase to be machined for machining.
2. A motorcycle crankcase bearing hole processing method according to claim 1, characterized in that: in the process of formulating the cutter:
the cutter comprises a cutter body integrally in a revolving body structure, a cutter handle is arranged at the upper end of the cutter body, a connecting hole used for being connected and installed with a machine tool is formed in the end part of the cutter handle, a cylinder used for arranging a blade is arranged at the lower end of the cutter handle, and a rough boring mechanism and a fine boring mechanism are oppositely arranged on the outer side surface of the cylinder;
the heavy boring mechanism comprises a heavy boring cutter rest mounting groove, the heavy boring cutter rest mounting groove is provided with two vertical intersected side walls, the lower end of the heavy boring cutter rest mounting groove is a first open end, a heavy boring cutter rest is mounted in the heavy boring cutter rest mounting groove, a first vertical screw hole is formed in the upper end face of the heavy boring cutter rest, a heavy boring height adjusting screw is mounted in the first vertical screw hole in a matched mode, a transverse first adjusting insertion hole is formed in the screw head portion of the upper end of the heavy boring height adjusting screw, the screw head portion of the screw head portion abuts against the inner wall of the upper end of the heavy boring cutter rest mounting groove, the heavy boring cutter rest is further provided with a first vertical bar hole which is right opposite to one side wall of the heavy boring cutter rest mounting groove, a heavy boring cutter rest pressing screw is further arranged on the heavy boring cutter rest, and after the heavy boring cutter rest pressing screw penetrates through the first vertical bar hole, the heavy boring cutter rest is in threaded connection with one screw hole in the side wall and tightly presses and fixes the heavy boring cutter rest, the lower part of the rough boring cutter rest is also provided with a rough boring aperture adjusting screw hole which is opposite to the other side wall, a rough boring aperture adjusting screw is further in threaded fit in the rough boring aperture adjusting screw hole, a first adjusting slot is arranged on the outer end face of the rough boring aperture adjusting screw, a first clearance space is reserved between the upper part of the rough boring cutter rest and the other side wall, a rough boring blade mounting groove is further formed in the outer surface of the side wall of the lower part of the rough boring cutter rest, which is far away from the screw hole, a rough boring blade is arranged in the rough boring blade mounting groove, the rough boring blade is transversely fixedly connected in the rough boring blade mounting groove through a transversely arranged rough boring blade pressing screw, and the cutting edge of the lower part of the rough boring blade extends downwards to form a cylinder and the cutting edge outside the rough boring cutter rest.
3. A motorcycle crankcase bearing hole processing method according to claim 2, characterized in that:
the fine boring mechanism comprises a fine boring cutter frame mounting groove, the fine boring cutter frame mounting groove is provided with two vertical intersected side walls, the lower end of the fine boring cutter frame mounting groove is a second open end, a fine boring cutter frame is mounted in the fine boring cutter frame mounting groove, a second vertical screw hole is formed in the upper end face of the fine boring cutter frame, a fine boring height adjusting screw is mounted in the second vertical screw hole in a matched mode, a transverse second adjusting insertion hole is formed in the head of the screw at the upper end of the fine boring height adjusting screw and abuts against the inner wall of the upper end of the fine boring cutter frame mounting groove, a second vertical bar hole which is right opposite to one side wall of the fine boring cutter frame mounting groove is further formed in the fine boring cutter frame, a fine boring cutter frame pressing screw is further arranged on the fine boring cutter frame, the fine boring cutter frame pressing screw penetrates through the second vertical bar hole and is in threaded connection with one screw hole in the side wall to press and fix the fine boring cutter frame, the fine boring cutter frame is characterized in that a fine boring aperture adjusting screw hole which is right opposite to the other side wall is further formed in the lower portion of the fine boring cutter frame, a fine boring aperture adjusting screw is in threaded fit with the fine boring aperture adjusting screw hole, a second adjusting slot is formed in the outer end face of the fine boring aperture adjusting screw, a second gap space is reserved between the upper portion of the fine boring cutter frame and the other side wall, a fine boring cutter blade mounting groove is further formed in the outer surface of the side wall, away from the screw hole, of the lower portion of the fine boring cutter frame, a fine boring cutter blade is arranged in the fine boring cutter blade mounting groove, the fine boring cutter blade is transversely fixedly connected in the fine boring cutter blade mounting groove in a penetrating mode through a transversely arranged fine boring cutter blade pressing screw, a cylinder is downwardly extended from a cutting edge of the lower portion of the fine boring cutter blade, and an outer side surface of the fine boring cutter frame is outwardly extended from a cutting edge.
4. A motorcycle crankcase bearing hole processing method according to claim 3, characterized in that: adopting a tool setting gauge to set a tool, wherein the tool setting step comprises:
installing a cutter on a tool setting gauge;
installing the rough boring cutter frame in a rough boring cutter frame installation groove, screwing down a rough boring cutter frame compression screw for fixing, and then installing a rough boring blade in a rough boring blade installation groove and fixing by the rough boring blade compression screw; installing the fine boring cutter frame in a fine boring cutter frame installation groove, screwing down a fine boring cutter frame compression screw for fixing, and then installing a fine boring blade in a fine boring blade installation groove and fixing by the fine boring blade compression screw;
aligning the blade point outside the edge of the rough boring blade on a display screen of a tool setting gauge, loosening a compression screw of a rough boring cutter frame, inserting an adjusting rod into an adjusting jack, horizontally rotating to adjust a rough boring height adjusting screw, enabling the head of the screw at the upper end of the rough boring cutter frame to be abutted against the inner wall at the upper end of an installing groove of the rough boring cutter frame, and adjusting the position of the rough boring cutter frame in the height direction, so that the position of the edge of the rough boring blade can meet the requirement of the processing depth of a bearing hole; then an adjusting screwdriver is inserted into a first adjusting slot at the outer end of the rough boring aperture adjusting screw to rotate and adjust, so that the lower end of the rough boring cutter frame rotates around the rough boring cutter frame pressing screw to change the position of the blade outside the blade edge of the rough boring blade in the circumferential direction, the distance between the blade outside the blade edge of the rough boring blade and the axis is ensured to be at a position where the aperture machining size is smaller by 0.2mm, and then the rough boring cutter frame pressing screw is screwed tightly to fix the rough boring cutter frame firmly;
aligning the blade point outside the edge of the fine boring blade on a display screen of a tool setting gauge, loosening a compression screw of a fine boring cutter frame, horizontally rotating and adjusting a fine boring height adjusting screw after an adjusting rod is inserted into an adjusting jack, enabling the head of the screw at the upper end of the fine boring cutter frame to be abutted against the inner wall at the upper end of an installing groove of the fine boring cutter frame and adjusting the position of the fine boring cutter frame in the height direction, so that the height position of the cutting edge of the fine boring blade is retracted upwards by 0.06-0.15mm compared with the cutting edge of the rough boring blade, then an adjusting screwdriver is inserted into a second adjusting slot at the outer end of the fine boring aperture adjusting screw to rotate and adjust, the lower end of the fine boring cutter frame rotates around a fine boring cutter frame compression screw to change the circumferential position of the outer edge point of the cutting edge of the fine boring blade, so that the distance between the outer edge point of the cutting edge of the fine boring blade and the axis is consistent with the processing size of the aperture, and then the fine boring cutter frame compression screw is screwed tightly to fix the fine boring cutter frame firmly;
and (5) taking down the cutter to complete cutter setting.
5. A motorcycle crankcase bearing hole machining method according to claim 4, characterized in that: installing the tool after tool setting on a tool position of machine tool equipment according to the requirements of a machining program, then installing a crankcase to be machined, and machining the crankcase:
during machining, the cutting edge of a rough boring blade in the cutter is firstly contacted with a crankcase for rough machining and milling, after the cutter is fed for a distance of 0.06-0.15mm, the cutting edge of a fine boring blade is simultaneously contacted with a rough machining and milling groove on the crankcase for finish machining and milling, and the rough machining and the finish machining of a bearing hole of the crankcase are simultaneously completed by one-time feeding stroke of a main shaft of the machine tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213466.6A CN113814438A (en) | 2021-10-19 | 2021-10-19 | Motorcycle crankcase bearing hole machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111213466.6A CN113814438A (en) | 2021-10-19 | 2021-10-19 | Motorcycle crankcase bearing hole machining method |
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| Publication Number | Publication Date |
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| CN113814438A true CN113814438A (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111213466.6A Pending CN113814438A (en) | 2021-10-19 | 2021-10-19 | Motorcycle crankcase bearing hole machining method |
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| CN202387972U (en) * | 2011-12-31 | 2012-08-22 | 重庆林腾机电有限公司 | Balancing axle hole boring cutter |
| CN104190981A (en) * | 2014-07-31 | 2014-12-10 | 重庆建设摩托车股份有限公司 | Motorcycle crankcase bearing hole machining method |
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| CN204108363U (en) * | 2014-07-31 | 2015-01-21 | 重庆建设摩托车股份有限公司 | A kind of crankcase bearing hole processing device |
| CN106424834A (en) * | 2016-11-22 | 2017-02-22 | 重庆帆玛机车制造有限公司 | Processing method for bearing hole of motorcycle crankcase |
| CN207914611U (en) * | 2017-12-27 | 2018-09-28 | 穆格精密工具（杭州）有限公司 | A kind of compound tool of the coarse-fine boring with chamfering |
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2021
- 2021-10-19 CN CN202111213466.6A patent/CN113814438A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202387972U (en) * | 2011-12-31 | 2012-08-22 | 重庆林腾机电有限公司 | Balancing axle hole boring cutter |
| CN104190981A (en) * | 2014-07-31 | 2014-12-10 | 重庆建设摩托车股份有限公司 | Motorcycle crankcase bearing hole machining method |
| CN204108400U (en) * | 2014-07-31 | 2015-01-21 | 重庆建设摩托车股份有限公司 | A kind of heavy boring-right boring conversion governor motion |
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