CN112296411A - Milling head box for processing crankshaft journal and end faces of balance blocks on two sides of journal - Google Patents

Milling head box for processing crankshaft journal and end faces of balance blocks on two sides of journal Download PDF

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Publication number
CN112296411A
CN112296411A CN202010727155.0A CN202010727155A CN112296411A CN 112296411 A CN112296411 A CN 112296411A CN 202010727155 A CN202010727155 A CN 202010727155A CN 112296411 A CN112296411 A CN 112296411A
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CN
China
Prior art keywords
milling head
head box
vertical
sliding table
cutter head
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Pending
Application number
CN202010727155.0A
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Chinese (zh)
Inventor
李小新
李新文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiangyang Fuda Dongkang Crankshaft Co ltd
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Xiangyang Fuda Dongkang Crankshaft Co ltd
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Filing date
Publication date
Application filed by Xiangyang Fuda Dongkang Crankshaft Co ltd filed Critical Xiangyang Fuda Dongkang Crankshaft Co ltd
Priority to CN202010727155.0A priority Critical patent/CN112296411A/en
Publication of CN112296411A publication Critical patent/CN112296411A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/06—Milling crankshafts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C9/00—Details or accessories so far as specially adapted to milling machines or cutter
    • 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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • 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
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

A milling head box for processing crankshaft journals and end faces of balance blocks on two sides of the journals is used for automatically milling crankshafts. The milling head box is arranged on the frame, the frame is connected with the sliding table in a sliding mode, the sliding table is connected with the guide rail of the lathe bed in a sliding mode, the milling head box moves transversely on the lathe bed through the sliding table to enable the cutter head to enter each cutting position, the two pairs of vertical ball screws drive the milling head box to feed in the vertical direction on the frame, linear interpolation of the center of the cutter head in the vertical direction is achieved, the cutter head moves in the vertical direction and moves along the vertical direction of the left frame and the right frame, and circular interpolation of the center of the cutter head along the center of each journal of the crankshaft is achieved. The invention can automatically process the main connecting shaft neck and the balance block end surface of the crankshaft at one time, the machine tool is convenient to change the model, the automation and flexibility degree is very high, the operation process is safe and reliable, the processing precision is high, the manufacturing cost is greatly reduced, and the labor intensity of operators can be effectively reduced.

Description

Milling head box for processing crankshaft journal and end faces of balance blocks on two sides of journal
Technical Field
The invention relates to the technical field of automobile part manufacturing, in particular to a milling head box for processing end faces of a crankshaft main journal, a connecting rod journal and a main connecting journal balance block.
Background
The crankshaft 42 is generally constructed from a main journal 44, a connecting journal 43, crank arms, counterweights, a large end and a small end. The main journal 44 and the connecting journal 43 of the crankshaft 42 have a certain eccentricity R therebetween, which makes the machining of a general machine tool troublesome. The common lathe can only process the main journal 44, but the connecting rod journal 43 with eccentricity and two sides of the balance weight are difficult to complete on the common lathe, and if the common lathe is adopted for processing, a heavy special clamp must be manufactured, and the installation and the use are very troublesome. The machining of the main journal 44 and the connecting journals 43 of the crankshaft 42 and the main connecting journal counterweight end face 46 can also be carried out by using an inlet internal milling machine, but the inlet machine has the following disadvantages:
1. and (5) aging the machine tool.
2. Because the size range of each variety of crankshafts is large, the types are multiple, the model change is frequent, the imported machine tool cannot meet the development requirement of new products, and the imported machine tool is designed according to the original crankshaft structure, so that the flexibility degree is very low.
3. The price is expensive, and if a production line is newly added, the imported machine tool needs to be purchased again, so that the production cost is very high.
4. The key accessories of the imported machine tool cannot be purchased at home, the replacement is inconvenient, the maintenance needs to ask for foreign experts, the period is long, and the cost is high.
Before a crankshaft is not clamped, the excircle of the large end of the crankshaft falls on an auxiliary support on an axial positioning fixture, the excircle of a main journal M7 of the small end of the crankshaft falls on an auxiliary support on an angular positioning fixture, a pull rod on the angular positioning fixture drives a floating center to extend forwards and prop against a hole of a tip of the small end, so that the crankshaft moves leftwards to enable the end face of the large end of the crankshaft to lean against an axial positioning stop block on the axial positioning fixture to finish axial positioning, a push disc of the angular positioning fixture continues to drive an angular positioning clamping jaw to clamp an angular positioning surface of the crankshaft, a push disc of the angular positioning fixture and an axial positioning fixture drives the clamping jaw to finish automatic clamping of the excircle of the large end and the excircle of the main journal of the crankshaft, the crankshaft starts to be machined after being clamped, a left cutter disc and a right cutter disc stop; and the left cutter head, the center frame and the right cutter head are moved to processing positions, the center frame is folded to clamp the processed main journal M2, the left cutter head and the right cutter head are simultaneously processed, and a connecting journal, a main journal and a main connecting journal balance block end face are sequentially processed at one time.
In the automatic machining equipment for the end faces of the main connecting shaft journal and the balance weight of the crankshaft, a milling head box is one of important devices, and the cutting of a cutter head in the vertical direction and the vertical direction of the crankshaft and the movement of a transverse machining position are required to be realized. Therefore, it is very important to develop a milling head box for processing the end surfaces of the main journal, the connecting rod journal and the balance weight of the main connecting journal.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a milling head box for processing the crankshaft journal and the end surfaces of balance blocks on two sides of the journal so as to mill the end surfaces of a main journal, a connecting rod journal and a balance block of a main connecting journal.
In order to achieve the purpose, a left milling head box and a right milling head box are respectively arranged on a left frame and a right frame, the left frame and the right frame are respectively connected with a left sliding table and a right sliding table in a sliding mode to achieve vertical direction movement of the left frame and the right frame, the left sliding table and the right sliding table are connected with a guide rail of a machine body in a sliding mode, the left milling head box and the right milling head box achieve transverse movement on the machine body through the left sliding table and the right sliding table to enable a cutter head to enter each cutting position, two pairs of vertical direction ball screws respectively drive the left milling head box and the right milling head box to achieve vertical direction feeding on the left frame and the right frame, and linear; the left milling head box is used for milling the journal of the connecting rod neck and the end faces of the balance blocks on the two sides of the connecting rod neck, and does not interfere with the movement of the right milling head box used for milling the journal of the main shaft neck and the end faces of the balance blocks on the two sides of the main shaft neck, when the connecting rod neck is machined by the driving cutter disc by the left milling head box, the distance of the machining center of the left milling head box deviating from the center of the crankshaft main shaft is R, and when the main shaft neck is machined by the driving cutter disc by the right milling head box, the machining center; the cutter head moves in the vertical direction and moves along with the left and right frames in the vertical direction, and circular interpolation of the center of the cutter head along the center of each journal of the crankshaft is realized together.
The milling head box is a driving device of the cutter head, the left milling head box and the right milling head box have the same structure and opposite directions, and are driven to move on the left frame and the right frame along the vertical direction by the left milling head box and the right milling head box through respective vertical shaft servo motors, vertical shaft gearboxes, vertical shaft worm gears distributed on two sides of the milling head box and synchronous transmission vertical shaft ball screws;
the left and right sliding tables are respectively connected with a bed body guide rail which is transversely arranged in parallel on the bed body in a sliding manner, the left and right sliding tables can transversely move along the bed body to determine the axial position of a connecting rod neck or a main journal processed by a cutter head, the left and right sliding tables are driven by a transverse shaft servo motor through a transverse shaft gearbox through a transverse ball screw, the transverse shaft servo motor is connected with the bed body through the transverse shaft gearbox, the transverse shaft servo motor is connected with a gear and a gear in the transverse shaft gearbox through tensioning sleeves, the transverse ball screws are respectively arranged on two sides of the bed body and are butted through a support shaft and a bearing, so that the two transverse ball screws can respectively rotate clockwise and anticlockwise, and the motions of the two transverse ball screws are not interfered with;
the left frame and the right frame are respectively connected with the guide rails of the left sliding table and the right sliding table in a sliding manner, and the vertical shaft servo motor drives the left frame and the right frame to respectively realize feeding along the left sliding table and the right sliding table in the vertical direction through a vertical shaft gearbox and a vertical shaft worm and gear through a vertical shaft ball screw;
the left milling head box and the right milling head box are respectively provided with a main motor, and the main motors are transmitted to a cutter head main shaft gear set through the rotation of a belt pulley I to drive a cutter head main shaft to rotate in the direction opposite to the interpolation direction of the center of the cutter head, so that the cutter head is driven to rotate; the first belt pulley drives the second belt pulley to rotate, a third gear is mounted on a shaft of the second belt pulley and is meshed with a fourth transition gear, the fourth transition gear is meshed with the second gear, the second gear is fixed on the outer circle of the cutter head spindle and drives the cutter head spindle to rotate, and adjusting bolts for adjusting the tightness of a belt are mounted on the left milling head box and the right milling head box; two angular contact ball bearings are respectively arranged on two sides of a cutter head main shaft on the left milling head box and the right milling head box; an oil tank is arranged below the left milling head box and the right milling head box, and a flow alarm device and an oil pointer are arranged in the lubricating system; two vertical ball nuts are fixedly mounted on two sides of the upper ends of the left milling head box and the right milling head box respectively and matched with the vertical ball screws, a fixing device is not arranged at the lower ends of the vertical ball screws, and vertical ball screw through holes are reserved below the vertical ball nuts; and a protective cover is arranged outside the cutter head main shaft.
The side surfaces of the left and right milling head boxes and the left and right frame guide rails I are provided with inlaid strips for adjusting gaps between the left and right milling head boxes, the pins are fixed on the left and right milling head boxes, the pressing plate is in sliding fit with the pins and can rotate around the pins, a piston rod of a first oil cylinder arranged on the left and right milling head boxes moves downwards, a disc spring arranged between a cylinder body of the first oil cylinder and the left and right milling head boxes is pressed and deformed, the lower end of the first piston rod pushes one end of the pressing plate to rotate downwards around the pins, the other end of the pressing plate rotates upwards around the pins, the upper end of the other end of the pressing plate is provided with a semicircular block, the semicircular block is pushed upwards by the pressing plate to prop against the two lower ends of the first guide rail and the second guide rail, the left and right milling head boxes are locked with the first guide rail and the second guide rail in the vertical direction, a second piston rod of a second oil cylinder arranged on the left and right milling head boxes extends out to prop against one side of the, and locking the left and right milling head boxes with the side surface of the first guide rail.
Compared with the prior art, the invention can automatically realize that the cutter head on the cutter head box enters each cutting position of the crankshaft through the connection between the frame and the sliding table, and the arc interpolation of the center of the cutter head along the center of each journal of the crankshaft is realized together with the vertical movement of the cutter head and the vertical movement of the cutter head along the frame, so that the main connecting journal and the balance block end surface of the crankshaft can be automatically processed at one time.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a sectional view a-a of fig. 1.
Fig. 4 is a sectional view B-B of fig. 1.
Fig. 5 is a cross-sectional view C-C of fig. 1.
Figure 6 is a schematic view of the locking structure of the connecting part of the milling head box and the guide rail.
Fig. 7 is a schematic view of a connection structure between the milling head box and the frame and the sliding table.
Fig. 8 is a top view of fig. 7.
Fig. 9 is a side view of fig. 7.
Fig. 10 is a schematic diagram of a crankshaft.
Fig. 11 is a side view of fig. 10.
In the figure: 1. adjusting the bolt; 2. a main motor; 3. a first guide rail; 4. a vertical ball nut; 5. a cutter head; 6. a milling head box; 7. a guide rail; 8. a cutter head main shaft; 9. a second gear; 10. angular contact ball bearings; 11. a first belt pulley; 12. a protective cover; 13. a third gear; 14. a second belt pulley; 15. a fourth transition gear; 16. a vertical ball screw through hole; 17. an oil tank; 18. a flow alarm device; 19. oil marks; 20. a piston rod II; 21. a second oil cylinder; 22. a first oil cylinder; 23. a belleville spring; 24. a first piston rod; 25. embedding strips; 26. pressing a plate; 27. a pin; 28. a semicircular block; 29. a vertical axis servo motor; 30. a vertical shaft gearbox; 31. a vertical ball screw; 32. a vertical axis worm gear; 33. a sliding table; 34. a frame; 35. a transverse shaft servo motor; 36. a transverse shaft gearbox; 37. a lateral ball screw; 38. a vertical axis servo motor; 39. a vertical axis gearbox; 40. a vertical axis worm gear; 41. a vertical ball screw; 42. a crankshaft; 43. a connecting rod neck; 44. a main journal; 45. a bed guide rail; 46. the end face of the balance block of the main connecting journal.
Detailed Description
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and 11, the left and right milling head cases 6 of the present invention are respectively mounted on the left and right frames 34, the left and right frames 34 are respectively connected with the left and right sliding tables 33 in a sliding manner, so as to realize vertical (X-axis) movement of the left and right frames 34, the left and right sliding tables 33 are connected with the bed guide rail 45 in a sliding manner, the left and right milling head cases 6 realize transverse (Z-axis) movement on the bed through the left and right sliding tables 33, so that the cutter head 5 enters each cutting position, and the two pairs of vertical ball screws 31 respectively drive the left and right milling head cases 6 to realize vertical (Y-axis) feeding on the left and right frames 34, so as to realize linear interpolation of the center of the cutter head 5 in the vertical direction; the left milling head box 6 used for milling the shaft neck of the connecting rod neck 43 and the end faces of the balance blocks on two sides of the connecting rod neck 43 does not interfere with the movement of the right milling head box 6 used for milling the shaft neck of the main shaft neck 5 and the end faces of the balance blocks on two sides of the main shaft neck 5, when the left milling head box 6 drives the cutter head 5 to process the connecting rod neck 43, the distance from the processing center of the left milling head box 6 to the center of the crankshaft main shaft is R, and when the right milling head box 6 drives the cutter head 5 to process the main shaft neck 44, the processing center of the right milling head box 6 is the center; the vertical movement of the cutter head 5 and the vertical movement of the left and right frames 34 together realize the circular interpolation of the center of the cutter head 5 along the center of each journal of the crankshaft 42.
The milling head box 6 is a driving device of the cutter head 5, the left and right milling head boxes 6 have the same structure and opposite directions, and the left and right milling head boxes 6 drive the milling head box 6 to move along the vertical direction on the left and right frames 34 through respective vertical shaft servo motors 29, vertical shaft gearboxes 30, vertical shaft worm gears 32 distributed on two sides of the milling head box 6 and synchronous transmission vertical shaft ball screws 31.
The left and right sliding tables 33 are respectively connected with a bed body guide rail 45 which is arranged transversely and parallelly on the bed body in a sliding mode, the left and right sliding tables 33 can transversely move along the bed body to determine the axial position of a connecting rod neck 43 or a main shaft neck 44 processed by the cutter head 5, the left and right sliding tables 33 are driven by a transverse shaft servo motor 35 through a transverse shaft gearbox 36 through a transverse shaft ball screw 37, the transverse shaft servo motor 35 is connected with the bed body through the transverse shaft gearbox 36, gears and gears in the transverse shaft servo motor 35 and the transverse shaft gearbox 36 are connected with the transverse ball screw 37 through tensioning sleeves, two transverse ball screws 37 are respectively arranged on two sides of the bed body and are in butt joint through a support shaft through bearings, so that the two transverse ball screws 37 can respectively rotate clockwise and anticlockwise, and the motions of the two transverse ball.
The left and right frames 34 are respectively connected with the guide rails of the left and right sliding tables 33 in a sliding manner, and the vertical axis servo motor 38 drives the left and right frames 34 to respectively feed along the left and right sliding tables 33 in the vertical direction through a vertical axis gearbox 39 and a vertical axis worm gear 40 by a vertical direction ball screw 41.
The left milling head box 6 and the right milling head box 6 are respectively provided with a main motor 2, and the main motors are transmitted to a gear set of a cutter head main shaft 8 through the rotation of a belt pulley I11 to drive the cutter head main shaft 8 to rotate in the direction opposite to the interpolation direction of the center of the cutter head 5, so that the cutter head 5 is driven to rotate; the belt pulley I11 drives the belt pulley II 14 to rotate, a shaft of the belt pulley II 14 is provided with a gear III 13, the gear III 13 is meshed with a transition gear IV 15, the transition gear IV 15 is meshed with a gear II 9, the gear II 9 is fixed on the excircle of the cutter head main shaft 8 to drive the cutter head main shaft 8 to rotate, and the left and right cutter head boxes 6 are provided with adjusting bolts 1 for adjusting the tightness of a belt; two angular contact ball bearings 10 are respectively arranged on two sides of a cutter head main shaft 8 on the left and right milling head boxes 6; an oil tank 17 is arranged below the left and right milling head boxes 6, and a flow alarm device 18 and an oil pointer 19 are arranged in the lubricating system; two vertical ball nuts 4 are fixedly mounted on two sides of the upper end of the left milling head box 6 and the two sides of the upper end of the right milling head box 6 respectively and are matched with the vertical ball screw 31, a fixing device is not arranged at the lower end of the vertical ball screw 31, the position of the vertical ball screw 31 is relatively fixed when the milling head box 6 runs up and down, the vertical ball screw 31 is guaranteed to have no bending deformation by the self weight of the milling head box 6 in a suspended state, and vertical ball screw through holes 16 are reserved below the vertical ball nuts 4; the outside of the cutterhead main shaft 8 is provided with a protective cover 12 to protect it.
The side surfaces of the left and right milling head boxes 6 and the guide rail I3 of the left and right frames 34 are provided with a gib 25 for adjusting the gap between the left and right milling head boxes 6, the pin 27 is fixed on the left and right milling head boxes 6, the pressing plate 26 is in sliding fit with the pin 27, the pressing plate 26 can rotate by taking the pin 27 as a circle center, the piston rod I24 of the oil cylinder I22 arranged on the left and right milling head boxes 6 moves downwards, the belleville spring 23 arranged between the cylinder body of the oil cylinder I22 and the left and right milling head boxes 6 is deformed under pressure, the lower end of the piston rod I24 pushes one end of the pressing plate 26 to rotate downwards by taking the pin 27 as a circle center, the other end of the pressing plate 26 rotates upwards by taking the pin 27 as a circle center, the upper end of the other end of the pressing plate 26 is provided with a semicircular block 28, the semicircular block 28 is pushed upwards by the pressing plate 26 to prop against the two lower ends of the guide rail I3 and the guide rail II 7, the left and right milling head boxes 6 are, and the other side of the gib 25 is contacted and pressed with the side surface of the first guide rail 3 to lock the left and right milling head boxes 6 with the side surface of the first guide rail 3. In the machining process of the crankshaft 42, the milling head box 6, the first guide rail 3 and the second guide rail 7 are in a loose state, one gear of the crankshaft 42 is machined, and when the cutter head 5 is reset and the center frame jumps along with the sliding table, the milling head box 6, the first guide rail 3 and the second guide rail 7 are in a locking state.

Claims (3)

1. The utility model provides a processing bent axle journal and milling head case of axle journal both sides balancing piece terminal surface which characterized in that: the left and right milling head boxes (6) are respectively arranged on a left frame (34) and a right frame (34), the left frame (34) and the right frame (34) are respectively connected with a left sliding table (33) and a right sliding table (33) in a sliding manner to realize the vertical movement of the left frame (34) and the right frame (34), the left sliding table (33) and the right sliding table (33) are connected with a guide rail (45) of a lathe bed in a sliding manner, the left milling head box (6) and the right milling head box (6) realize the transverse movement on the lathe bed through the left sliding table (33) and the right sliding table (33) to enable the cutter head (5) to enter each cutting position, two pairs of vertical ball screws (31) respectively drive the left milling head box (6) and the right milling head box (6) to realize; the left milling head box (6) used for milling the shaft neck of the connecting rod neck (43) and the end faces of the balance blocks on two sides of the connecting rod neck (43) does not interfere with the movement of the right milling head box (6) used for milling the shaft neck of the main shaft neck (44) and the end faces of the balance blocks on two sides of the main shaft neck (44), when the left milling head box (6) drives the cutter head (5) to process the connecting rod neck (43), the distance from the processing center of the left milling head box (6) to the center of a crankshaft spindle is R, and when the right milling head box (6) drives the cutter head (5) to process the main shaft neck (44), the processing center of the right milling head box (6) is the center of the; the cutter head (5) moves in the vertical direction and moves along the vertical direction of the left frame (34) and the right frame (34), and circular interpolation of the center of the cutter head (5) along the center of each journal of the crankshaft (42) is realized together.
2. The milling head box for processing the crankshaft journal and the end surfaces of the balance weights on two sides of the journal as claimed in claim 1, wherein: the milling head box (6) is a driving device of the cutter head (5), the left and right milling head boxes (6) are identical in structure and opposite in direction, and the left and right milling head boxes (6) drive the milling head boxes (6) to move on the left and right frames (34) along the vertical direction through respective vertical shaft servo motors (29), vertical shaft gear boxes (30), vertical shaft worm gears (32) distributed on two sides of the milling head boxes (6) and synchronous transmission vertical shaft ball screws (31);
the left sliding table (33) and the right sliding table (33) are respectively connected with a bed body guide rail (45) which is arranged on the bed body in parallel in the transverse direction in a sliding way, the left sliding table (33) and the right sliding table (33) can move along the transverse direction of the bed body to determine the axial position, left, the right sliding table (33) is driven by a transverse shaft servo motor (35) through a transverse shaft gearbox (36) through a transverse ball screw (37), the transverse shaft servo motor (35) is connected with the machine body through the transverse shaft gearbox (36), the transverse shaft servo motor (35) is connected with a gear and a gear in the transverse shaft gearbox (36) through tensioning sleeves, two transverse ball screws (37) are arranged on two sides of the machine body respectively and are in butt joint through a support shaft through bearings, so that the two transverse ball screws (37) can respectively rotate clockwise and anticlockwise, and the motions of the two transverse ball screws (37) are not interfered with each other;
the left frame (34) and the right frame (34) are respectively connected with the guide rails of the left sliding table (33) and the right sliding table (33) in a sliding manner, and the vertical shaft servo motor (38) drives the left frame (34) and the right frame (34) to respectively realize feeding along the vertical direction along the left sliding table (33) and the right sliding table (33) through a vertical shaft gearbox (39) and a vertical shaft worm gear (40) through a vertical direction ball screw (41);
the left and right milling head boxes (6) are respectively provided with a main motor (2) and are transmitted to a gear set of a cutter head main shaft (8) through the rotation of a belt pulley I (11) to drive the cutter head main shaft (8) to rotate in the direction opposite to the interpolation direction of the center of the cutter head (5), so that the cutter head (5) is driven to rotate; the belt pulley I (11) drives the belt pulley II (14) to rotate, a gear III (13) is mounted on a shaft of the belt pulley II (14), the gear III (13) is meshed with a transition gear IV (15), the transition gear IV (15) is meshed with a gear II (9), the gear II (9) is fixed on the excircle of the cutter head main shaft (8) to drive the cutter head main shaft (8) to rotate, and adjusting bolts (1) for adjusting the tightness of a belt are mounted on the left and right cutter head boxes (6); two angular contact ball bearings (10) are respectively arranged on two sides of a cutter head main shaft (8) on the left and right milling head boxes (6); an oil tank (17) is arranged below the left milling head box (6) and the right milling head box (6), and a flow alarm device (18) and an oil pointer (19) are arranged in the lubricating system; two vertical ball nuts (4) are respectively and fixedly installed on two sides of the upper end of the left milling head box and the right milling head box (6) and are matched with the vertical ball screw (31), a fixing device is not arranged at the lower end of the vertical ball screw (31), and a vertical ball screw through hole (16) is reserved below the vertical ball nut (4); a protective cover (12) is arranged outside the cutter head main shaft (8).
3. The milling head box for processing the crankshaft journal and the end surfaces of the balance weights on two sides of the journal as claimed in claim 1, wherein: the milling head comprises a left milling head box (6), a right milling head box (6), a left frame (34), a right frame (34), a guide rail I (3), a clamp plate (26), a pin (27), a butterfly spring (23), a semicircular block (28), a gib block (28), a guide rail I (3) and a guide rail I (3), wherein the gib block (25) is used for adjusting the gap between the guide rail I (3) and the guide rail I (6), the pin (27) is fixed on the left milling head box and the right milling head box (6), the clamp plate (26) can rotate around the pin (27), the piston rod I (24) of the cylinder I (22) installed on the left milling head box and the right milling head box (6) moves downwards, the butterfly spring (23) installed between the cylinder I (22) and the left milling head box and the right milling head box (6) is pressed to deform, the lower end of the piston rod I (24) pushes one end of the clamp plate (26) to downwards rotate around the pin (27), the other end of the clamp plate (26) upwards rotates around, And two ends of the lower part of the second guide rail (7) lock the left and right milling head boxes (6) with the first guide rail (3) and the second guide rail (7) in the vertical direction, a second piston rod (20) of a second oil cylinder (21) arranged on the left and right milling head boxes (6) extends out to prop against one side of the gib (25), the other side of the gib (25) is contacted and pressed with the side surface of the first guide rail (3), and the left and right milling head boxes (6) are locked with the side surface of the first guide rail (3).
CN202010727155.0A 2020-07-27 2020-07-27 Milling head box for processing crankshaft journal and end faces of balance blocks on two sides of journal Pending CN112296411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010727155.0A CN112296411A (en) 2020-07-27 2020-07-27 Milling head box for processing crankshaft journal and end faces of balance blocks on two sides of journal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010727155.0A CN112296411A (en) 2020-07-27 2020-07-27 Milling head box for processing crankshaft journal and end faces of balance blocks on two sides of journal

Publications (1)

Publication Number Publication Date
CN112296411A true CN112296411A (en) 2021-02-02

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CN202010727155.0A Pending CN112296411A (en) 2020-07-27 2020-07-27 Milling head box for processing crankshaft journal and end faces of balance blocks on two sides of journal

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