CN109202496B - Special clamping device for crankshaft punching - Google Patents

Special clamping device for crankshaft punching Download PDF

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Publication number
CN109202496B
CN109202496B CN201811394979.XA CN201811394979A CN109202496B CN 109202496 B CN109202496 B CN 109202496B CN 201811394979 A CN201811394979 A CN 201811394979A CN 109202496 B CN109202496 B CN 109202496B
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Prior art keywords
sliding
waste
plate
base
groove
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CN201811394979.XA
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CN109202496A (en
Inventor
王仁乔
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Ningbo Jianshi Machinery Co ltd
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Ningbo Jianshi Machinery Co ltd
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Priority to CN201811394979.XA priority Critical patent/CN109202496B/en
Publication of CN109202496A publication Critical patent/CN109202496A/en
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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
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • 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
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B23Q3/08—Work-clamping means other than mechanically-actuated
    • 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
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/04—Work clamping means using fluid means or a vacuum
    • 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
    • B23Q2703/00—Work clamping
    • B23Q2703/02—Work clamping means
    • B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
    • B23Q2703/105—Devices for clamping workpieces of a particular form or made from a particular material for clamping a crankshaft

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)

Abstract

The invention discloses a special clamping device for punching a crankshaft, which comprises a base, wherein a left sliding plate and a right sliding plate are arranged on the base; the left sliding plate and the right sliding plate are provided with first notches; a second notch is formed in the pressing pull plate; a plurality of positioning slide rods are arranged on the base, and adjusting bolts are connected to the upper ends of the positioning slide rods in a threaded manner; a compression spring is sleeved on the positioning slide rod; a transmission hole is formed in the base, a transmission screw is arranged at the lower end of the pressing block, and a driving cylinder is arranged in the base; the base is provided with a short shaft crank fixing mechanism; the crankshaft drilling clamping device is simple in structure and can be properly adjusted according to the relative rotation angle of the drilling and the crank throw.

Description

Special clamping device for crankshaft punching
Technical Field
The invention relates to the technical field of crankshaft machining, in particular to a special clamping device for crankshaft punching.
Background
The crankshaft is the main rotating mechanism of the engine, which is responsible for converting the up-and-down reciprocating motion of the piston into the circular motion of the crankshaft, and the rotating speed of the engine is the rotating speed of the crankshaft. The crankshaft shown in fig. 9 includes a short shaft 001, a crank throw 002, and a long shaft 003 having positioning notches 30 at both ends, wherein one end of the crank throw is fixedly connected to one end of the long shaft, the other end of the crank throw is fixedly connected to one end of the short shaft, and the short shaft and the long shaft are parallel to each other. With the expansion of the application range of the crankshafts, some crankshafts need to be punched on the circumferential side of a long shaft, and although some special punching clamps exist in the prior art, the rotation angle of punching relative to a crank throw cannot be adjusted according to the requirement; the operation is troublesome even if the adjustment is possible; in addition, waste materials generated in the punching process need to be cleaned manually, and the waste materials are fluffy and occupy larger space.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a special clamping device for crankshaft punching, which is simple in structure, can quickly realize crankshaft punching, and can be properly adjusted according to the relative rotation angle of punching and a crank throw.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a clamping device special for crankshaft punching comprises a base, wherein a left sliding plate and a right sliding plate are arranged on the base side by side in the vertical direction, a pressing block is connected between the left sliding plate and the right sliding plate on the base in a vertical sliding mode, a first sliding groove is formed in the pressing block in the length direction perpendicular to the base, a pressing pull plate is connected in the first sliding groove in a sliding mode, and a first lead screw which is arranged in the length direction of the first sliding groove and used for driving the pressing pull plate to move is rotatably connected in the first sliding groove; first notches for placing long shafts are formed in the positions, close to the tops, of the side faces of the left sliding plate and the right sliding plate; a second notch for placing the long shaft is arranged on the side surface of the pressing pull plate facing the first notch;
a plurality of positioning slide bars are arranged upwards on the base along the vertical direction, and a plurality of guide slide holes matched with the positioning slide bars are formed in the pressing block; the upper end of the positioning slide rod is in threaded connection with an adjusting bolt; a compression spring for forcing the compression block to move downwards is sleeved between the adjusting bolt and the compression block on the positioning slide rod;
a transmission hole is formed in the base below the compression block along the vertical direction, and a transmission screw rod extending into the transmission hole is arranged at the lower end of the compression block; a driving cylinder with a telescopic end fixedly connected with the lower end of the transmission screw is arranged at the lower end of the transmission hole in the base; and a short shaft crank fixing mechanism is arranged on the left side of the left sliding plate on the base.
According to the technical scheme, when the special crankshaft punching clamping device works, the driving cylinder extends out to jack the pressing block upwards through the transmission screw rod and compress the pressing spring; then, a long shaft of the crankshaft is placed into first notches on the left sliding plate and the right sliding plate; then inserting the short shaft into the short shaft crank fixing mechanism; then, rotating the first screw rod to drive the compression pulling plate positioned in the first chute to move towards the long shaft direction, and enabling the long shaft of the crankshaft to enter the second chute; then the steering of the crank throw is adjusted through the short shaft crank throw fixing mechanism, the crank throw is pressed on the left sliding plate, finally, the air cylinder is driven to contract, the pressing block moves downwards under the action of the pressing spring, and then the pressing pull plate is driven to press the long shaft of the crankshaft to fix the crankshaft; the arrangement of the plurality of positioning slide rods and the plurality of compression springs can enable the compression stress of the crankshaft to be more uniform; meanwhile, the pretightening force of the compression spring can be changed by rotating the adjusting bolt.
In a further technical scheme, the short shaft crank fixing mechanism comprises a first sliding block, a transmission worm wheel and a second screw rod, wherein a second sliding groove is formed in the left side of the left sliding plate on the base along the length direction of the base, the first sliding block is connected in the second sliding groove in a sliding manner, and the second screw rod is connected in the second sliding groove in a rotating manner along the length direction of the base and is used for driving the first sliding block to move in the second sliding groove; the first sliding block is provided with a mounting side plate parallel to the left sliding plate, the transmission worm wheel is rotatably connected to the mounting side plate, and a rotating shaft of the transmission worm wheel is coaxial with a long shaft of the crankshaft; the first sliding block is provided with convex plates at the positions close to the two sides of the mounting side plate, and the transmission worm is rotatably connected between the two convex plates and meshed with the transmission worm wheel; the eccentric position of the transmission worm wheel is provided with an eccentric shaft hole for the short shaft of the crankshaft to be inserted; the transmission worm wheel is provided with a conical convex top at the center of the end surface facing the left sliding plate, and the conical convex top is inserted into a positioning notch at the left end of the long shaft to tightly push the crank throw against the left side surface of the left sliding plate.
According to the technical scheme, when the short shaft crank throw fixing mechanism works, the second screw rod is rotated to drive the first slide block to move towards the left sliding plate, so that the short shaft of the crankshaft is inserted into the eccentric shaft hole of the transmission worm wheel, and the conical convex top is inserted into the positioning notch at the left end of the long shaft; then, the transmission worm is rotated to drive the transmission worm wheel to rotate, and the long shaft is driven to rotate to a position needing punching through the short shaft and the crank throw; and finally, continuously rotating the second screw rod to tightly push the crank throw on the left sliding plate through the conical convex top.
In a further technical scheme, a through sliding hole is arranged right below a punching position of the long shaft in the pressing block, a sliding guide protrusion inserted into the sliding hole is arranged on the base, and a first waste material sliding groove with an opening at the upper end is arranged in the sliding guide protrusion in the vertical direction; a waste pushing groove with an opening at the right end is arranged at the lower end of the first waste sliding groove in the base along the horizontal direction; a second waste material sliding groove is formed in the bottom surface of the waste material pushing groove in the base downwards along the vertical direction; a drawer groove communicated with the second waste material sliding groove is formed in the lower end of the second waste material sliding groove in the base, and a drawer used for containing waste materials is connected in the drawer groove in a sliding mode;
an annular cutting groove communicated with the transmission hole and the waste pushing groove is formed in the base, and the center of the annular cutting groove is located on the axis of the transmission hole; a cam connected with the transmission screw is arranged in the annular cutting groove; the waste pushing groove is connected with a waste pushing plate in a sliding mode, and a tension spring used for pressing the waste pushing plate on the cam is arranged on the left end face of the waste pushing groove; a pressing block is connected in the waste pushing groove in a sliding mode, and a fixing plate is installed at the opening position of the right end of the waste pushing groove; a first spring is arranged between the pressing block and the fixed plate in the waste pushing groove, and a damping air hole is formed in the center of the fixed plate;
when a long shaft of the crankshaft is punched, the waste push plate is tightly pressed on a base circle of the cam and positioned on the left side of the opening at the lower end of the first waste chute under the action of the tension spring; meanwhile, the first spring is in a natural extension state, the pressing block connected with the first spring is positioned at the opening at the upper end of the second waste material sliding chute and seals the opening at the upper end of the second waste material sliding chute, waste materials generated by punching fall into the waste material pushing groove from the first waste material sliding chute, and the waste materials are positioned between the waste material pushing plate and the pressing block; when the crankshaft is taken down, the driving air cylinder extends out of the driving screw rod to drive the driving screw rod to move upwards, so that the cam is driven to rotate, the cam pushes the waste pushing plate to push waste positioned in the waste pushing groove to the pressing block to be compressed, and meanwhile, the pressing block slowly moves rightwards due to the damping air hole and compresses the first spring, so that an opening at the upper end of the second waste sliding groove is opened; when the transmission screw moves downwards to clamp the crankshaft, the transmission screw drives the cam to rotate reversely, the pressing block is far away from the waste pushing plate under the action of the tension spring, so that waste between the waste pushing plate and the pressing block falls into the second waste sliding groove, waste entering the second waste sliding groove falls into the drawer, and meanwhile, the pressing block slowly moves leftwards under the action of the first spring due to the damping air holes.
In a further technical scheme, a rotating shaft is arranged at the center of the end face of the transmission worm wheel far away from the left sliding plate, a rotating shaft hole is formed in the mounting side plate, and the rotating shaft is rotatably connected to the rotating shaft hole; and one end of the rotating shaft, which penetrates through the rotating shaft hole, is provided with a limiting bolt.
(III) advantageous effects
Compared with the prior art, the technical scheme of the invention has the following advantages: when the special crankshaft punching clamping device works, the driving cylinder extends out to jack the pressing block upwards through the transmission screw rod and compress the pressing spring; then, a long shaft of the crankshaft is placed into first notches on the left sliding plate and the right sliding plate; then inserting the short shaft into the short shaft crank fixing mechanism; then, rotating the first screw rod to drive the compression pulling plate positioned in the first chute to move towards the long shaft direction, and enabling the long shaft of the crankshaft to enter the second chute; then the steering of the crank throw is adjusted through the short shaft crank throw fixing mechanism, the crank throw is pressed on the left sliding plate, finally, the air cylinder is driven to contract, the pressing block moves downwards under the action of the pressing spring, and then the pressing pull plate is driven to press the long shaft of the crankshaft to fix the crankshaft; the arrangement of the plurality of positioning slide rods and the plurality of compression springs can enable the compression stress of the crankshaft to be more uniform; meanwhile, the pretightening force of the compression spring can be changed by rotating the adjusting bolt; in addition, waste materials generated by punching can be compressed and collected.
Drawings
FIG. 1 is a schematic structural view of a main section of a crankshaft special clamping device for crankshaft drilling according to the present invention;
FIG. 2 is a schematic cross-sectional view taken along line B-B of FIG. 1;
FIG. 3 is a schematic cross-sectional view at C-C in FIG. 1;
FIG. 4 is a schematic cross-sectional view taken at D-D in FIG. 1;
FIG. 5 is a schematic cross-sectional view taken along line E-E of FIG. 1;
FIG. 6 is an enlarged schematic view of the structure at A in FIG. 1;
FIG. 7 is a schematic view of a main section of a crankshaft special clamping device for drilling holes in the invention when the crankshaft is loosened;
FIG. 8 is a top view of a crankshaft clamping device of the present invention;
fig. 9 is a schematic sectional view of a crankshaft according to the present invention.
Detailed Description
Referring to fig. 1-9, a special clamping device for punching a crankshaft comprises a base 1, a left sliding plate 2 and a right sliding plate 3 are arranged on the base 1 side by side in the vertical direction, a pressing block 4 is connected to the base 1 between the left sliding plate 2 and the right sliding plate 3 in a vertical sliding manner, a first sliding groove 401 is arranged on the pressing block 4 in the length direction perpendicular to the base 1, a pressing pull plate 5 is connected in the first sliding groove 401 in a sliding manner, and a first screw rod 6 which is arranged in the length direction of the first sliding groove 401 and used for driving the pressing pull plate 5 to move is rotatably connected to the first sliding groove 401; the side surfaces of the left sliding plate 2 and the right sliding plate 3 are respectively provided with a first notch 7 for placing a long shaft 003 at the position close to the top; the pressing and pulling plate 5 is provided with a second notch 501 for placing the long shaft 003 on the side facing the first notch 7.
Four positioning slide bars 8 are arranged on the base 1 upwards along the vertical direction, and four slide guide holes matched with the positioning slide bars 8 are arranged on the pressing block 4; the upper end of the positioning slide bar 8 is in threaded connection with an adjusting bolt 9; and a compression spring 10 for forcing the compression block 4 to move downwards is sleeved on the positioning slide rod 8 between the adjusting bolt 9 and the compression block 4.
A transmission hole 101 is formed in the base 1 below the pressing block 4 along the vertical direction, and a transmission screw 11 extending into the transmission hole 101 is arranged at the lower end of the pressing block 4; a driving cylinder 12 with a telescopic end fixedly connected with the lower end of the transmission screw rod 11 is arranged at the lower end of a transmission hole 101 in the base 1; and a short shaft crank fixing mechanism is arranged on the left side of the left sliding plate 2 on the base 1.
The short shaft crank throw fixing mechanism comprises a first sliding block 13, a transmission worm 14, a transmission worm wheel 15 and a second screw rod 16, wherein a second sliding groove 102 is formed in the left side of the left sliding plate 2 on the base 1 along the length direction of the base 1, the first sliding block 13 is connected in the second sliding groove 102 in a sliding mode, and the second screw rod 16 is connected in the second sliding groove 102 in a rotating mode along the length direction of the base 1 and used for driving the first sliding block 13 to move in the second sliding groove 102; the first sliding block 13 is provided with an installation side plate 17 parallel to the left sliding plate 2, the transmission worm wheel 15 is rotatably connected to the installation side plate 17, and a rotating shaft of the transmission worm wheel 15 is coaxially arranged with the long shaft 003 of the crankshaft; the first sliding block 13 is provided with convex plates 18 at two sides close to the mounting side plate 17, and the transmission worm 14 is rotatably connected between the two convex plates 18 and meshed with the transmission worm wheel 15; an eccentric shaft hole 1501 for inserting a short shaft 001 of the crankshaft is formed in the eccentric position of the transmission worm wheel 15; the transmission worm wheel 15 is provided with a conical convex top 19 at the center of the end surface facing the left sliding plate 2, and the conical convex top 19 is inserted into the positioning notch 30 at the left end of the long shaft 003 to tightly push the crank throw 002 against the left side surface of the left sliding plate 2.
A through sliding hole 402 is arranged right below the punching position of the long shaft 003 in the pressing block 4, a sliding guide protrusion 103 inserted into the sliding hole 402 is arranged on the base 1, and a first waste material sliding groove 104 with an open upper end is arranged in the sliding guide protrusion 103 along the vertical direction; a waste pushing groove 105 with an opening at the right end is arranged at the lower end of the first waste chute 104 in the base 1 along the horizontal direction; a second waste material chute 106 is arranged in the base 1 on the bottom surface of the waste material pushing groove 105 downwards along the vertical direction; a drawer groove 107 communicated with the second waste chute 106 is formed in the lower end of the second waste chute 106 in the base 1, and a drawer 20 for containing waste is connected in the drawer groove 107 in a sliding mode.
An annular cutting groove 108 communicated with the transmission hole 101 and the waste pushing groove 105 is formed in the base 1, and the center of the annular cutting groove 108 is located on the axis of the transmission hole 101; a cam 21 in threaded connection with the transmission screw rod 11 is arranged in the annular cutting groove 108; a waste pushing plate 22 is connected in the waste pushing groove 105 in a sliding manner, and a tension spring 23 used for pressing the waste pushing plate 22 on the cam 21 is arranged on the left end face of the waste pushing groove 105; a pressing block 24 is connected in the waste pushing groove 105 in a sliding mode, and a fixing plate 25 is installed at the opening position of the right end of the waste pushing groove 105; a first spring 26 is arranged between the pressing block 24 and the fixing plate 25 in the scrap pushing groove 105, and a damping air hole 2501 is arranged at the center of the fixing plate 25.
A rotating shaft 27 is arranged on the transmission worm gear 15 at the center of the end face far away from the left sliding plate 2, a rotating shaft hole 1701 is formed in the mounting side plate 17, and the rotating shaft 27 is rotatably connected to the rotating shaft hole 1701; a limit bolt 28 is mounted on the rotating shaft 27 at one end passing through the rotating shaft hole 1701.
When the special crankshaft punching clamping device works, the driving cylinder 12 extends out to jack the pressing block 4 upwards through the transmission screw rod 11 and compress the pressing spring 10; then, the long shaft 003 of the crankshaft is placed in the first notches 7 on the left sliding plate 2 and the right sliding plate 3; then, the second screw rod 16 is rotated to drive the first slide block 13 to drive the transmission worm wheel 15 to move towards the left sliding plate 2, so that the short shaft of the crankshaft is inserted into the eccentric shaft hole 1501 of the transmission worm wheel 15, and the conical convex top 19 is inserted into the positioning notch 30 at the left end of the long shaft 003; then, the first screw rod 6 is rotated to drive the compressing pulling plate 5 positioned in the first sliding groove 401 to move towards the long shaft 003, and the long shaft 003 of the crankshaft enters the second notch 501; then, the transmission worm 14 is rotated to drive the transmission worm wheel 15 to rotate, and further the long shaft 003 is driven to rotate to the position needing punching through the short shaft and the crank throw 002; then, the second screw rod 16 is continuously rotated to tightly push the crank throw 002 on the left sliding plate 2 through the conical convex top 19; finally, the cylinder 12 is driven to contract, the pressing block 4 moves downwards under the action of the pressing spring 10, and the pressing pulling plate 5 is driven to press the long shaft 003 of the crankshaft to fix the crankshaft; the arrangement of the plurality of positioning slide rods 8 and the plurality of compression springs 10 can enable the compression stress of the crankshaft to be more uniform; at the same time, the pretensioning force of the compression spring 10 can be changed by turning the adjusting screw 9.
When the long shaft 003 of the crankshaft is punched, the waste push plate 22 is pressed on the base circle of the cam 21 and positioned on the left side of the opening at the lower end of the first waste chute 104 under the action of the tension spring 23; meanwhile, the first spring 26 is in a natural extension state, the pressing block 24 connected with the first spring 26 is positioned at the upper end opening of the second waste material sliding chute and seals the upper end opening of the second waste material sliding chute, waste materials generated by punching fall into the waste material pushing groove 105 from the first waste material sliding chute 104, and the waste materials are positioned between the waste material pushing plate 22 and the pressing block 24; when the crankshaft is taken down, the driving cylinder 12 extends out to drive the transmission screw rod 11 to move upwards, so that the cam 21 is driven to rotate, the cam 21 pushes the waste push plate 22 to push the waste in the waste push groove 105 to the pressing block 24 to be compressed, and meanwhile, the damping air hole 2501 enables the pressing block 24 to move slowly to the right and compress the first spring 26, so that the upper end opening of the second waste slide groove is opened; when the driving screw 11 moves downwards to clamp the crankshaft, the driving screw 11 drives the cam 21 to rotate reversely, the waste pushing plate 22 is far away from the pressing block 24 under the action of the tension spring 23, so that the waste between the waste pushing plate 22 and the pressing block 24 falls into the second waste chute, the waste entering the second waste chute falls into the drawer 20, and meanwhile, the pressing block 24 slowly moves leftwards under the action of the first spring 26 due to the damping air hole 2501.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (3)

1. A special clamping device for punching of a crankshaft comprises a base and is characterized in that a left sliding plate and a right sliding plate are arranged on the base side by side in the upward direction along the vertical direction, a pressing block is connected between the left sliding plate and the right sliding plate on the base in a sliding mode along the vertical direction, a first sliding groove is formed in the pressing block along the length direction perpendicular to the base, a pressing pull plate is connected in the first sliding groove in a sliding mode, and a first lead screw which is arranged along the length direction of the first sliding groove and used for driving the pressing pull plate to move is connected in the first sliding groove in a rotating mode; first notches for placing long shafts are formed in the positions, close to the tops, of the side faces of the left sliding plate and the right sliding plate; a second notch for placing the long shaft is arranged on the side surface of the pressing pull plate facing the first notch;
a plurality of positioning slide bars are arranged upwards on the base along the vertical direction, and a plurality of guide slide holes matched with the positioning slide bars are formed in the pressing block; the upper end of the positioning slide rod is in threaded connection with an adjusting bolt; a compression spring for forcing the compression block to move downwards is sleeved between the adjusting bolt and the compression block on the positioning slide rod;
a transmission hole is formed in the base below the compression block along the vertical direction, and a transmission screw rod extending into the transmission hole is arranged at the lower end of the compression block; a driving cylinder with a telescopic end fixedly connected with the lower end of the transmission screw is arranged at the lower end of the transmission hole in the base; a short shaft crank fixing mechanism is arranged on the left side of the left sliding plate on the base;
the short shaft crank throw fixing mechanism comprises a first sliding block, a transmission worm wheel and a second screw rod, wherein a second sliding groove is formed in the left side of the left sliding plate on the base along the length direction of the base, the first sliding block is connected in the second sliding groove in a sliding mode, and the second screw rod is connected in the second sliding groove in a rotating mode along the length direction of the base and used for driving the first sliding block to move in the second sliding groove; the first sliding block is provided with a mounting side plate parallel to the left sliding plate, the transmission worm wheel is rotatably connected to the mounting side plate, and a rotating shaft of the transmission worm wheel is coaxial with a long shaft of the crankshaft; the first sliding block is provided with convex plates at the positions close to the two sides of the mounting side plate, and the transmission worm is rotatably connected between the two convex plates and meshed with the transmission worm wheel; the eccentric position of the transmission worm wheel is provided with an eccentric shaft hole for the short shaft of the crankshaft to be inserted; the transmission worm wheel is provided with a conical convex top at the center of the end surface facing the left sliding plate, and the conical convex top is inserted into a positioning notch at the left end of the long shaft to tightly push the crank throw against the left side surface of the left sliding plate.
2. The special clamping device for crankshaft drilling as claimed in claim 1, wherein a through sliding hole is provided right below the drilling position of the long shaft in the pressing block, a sliding guide protrusion inserted into the sliding hole is provided on the base, and a first waste chute with an open upper end is provided in the sliding guide protrusion along a vertical direction; a waste pushing groove with an opening at the right end is arranged at the lower end of the first waste sliding groove in the base along the horizontal direction; a second waste material sliding groove is formed in the bottom surface of the waste material pushing groove in the base downwards along the vertical direction; a drawer groove communicated with the second waste material sliding groove is formed in the lower end of the second waste material sliding groove in the base, and a drawer used for containing waste materials is connected in the drawer groove in a sliding mode;
an annular cutting groove communicated with the transmission hole and the waste pushing groove is formed in the base, and the center of the annular cutting groove is located on the axis of the transmission hole; a cam connected with the transmission screw is arranged in the annular cutting groove; the waste pushing groove is connected with a waste pushing plate in a sliding mode, and a tension spring used for pressing the waste pushing plate on the cam is arranged on the left end face of the waste pushing groove; a pressing block is connected in the waste pushing groove in a sliding mode, and a fixing plate is installed at the opening position of the right end of the waste pushing groove; a first spring is arranged between the pressing block and the fixed plate in the waste pushing groove, and a damping air hole is formed in the center of the fixed plate;
when a long shaft of the crankshaft is punched, the waste push plate is tightly pressed on a base circle of the cam and positioned on the left side of the opening at the lower end of the first waste chute under the action of the tension spring; meanwhile, the first spring is in a natural extension state, and the pressing block connected with the first spring is positioned at the opening at the upper end of the second waste material sliding chute and seals the opening at the upper end of the second waste material sliding chute; when the crankshaft is taken down, the transmission screw moves upwards to drive the cam to rotate, the cam pushes the waste pushing plate to push the waste in the waste pushing groove to the pressing block to be compressed, and meanwhile, the pressing block slowly moves rightwards due to the damping air hole and compresses the first spring to open the upper end opening of the second waste sliding groove; when the transmission screw moves downwards to clamp the crankshaft, the transmission screw drives the cam to rotate reversely, the waste push plate is far away from the pressing block under the action of the tension spring, so that waste between the waste push plate and the pressing block falls into the second waste sliding groove, and meanwhile, the pressing block slowly moves leftwards under the action of the first spring due to the damping air holes.
3. The special clamping device for punching the crankshaft as claimed in claim 1, wherein a rotating shaft is arranged on the transmission worm wheel at the center of the end face far away from the left sliding plate, a rotating shaft hole is arranged on the mounting side plate, and the rotating shaft is rotatably connected with the rotating shaft hole; and one end of the rotating shaft, which penetrates through the rotating shaft hole, is provided with a limiting bolt.
CN201811394979.XA 2018-11-22 2018-11-22 Special clamping device for crankshaft punching Active CN109202496B (en)

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CN113370171B (en) * 2021-08-16 2021-11-19 徐州优力同创科技股份有限公司 Clamping device for bearing machining

Citations (6)

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Publication number Priority date Publication date Assignee Title
KR20020046047A (en) * 2000-12-12 2002-06-20 류정열 Apparatus for fixing crank on deburring
CN203956589U (en) * 2014-06-30 2014-11-26 嘉兴市宏丰机械有限公司 A kind of brill bent axle major axis centre hole clamp
CN204487220U (en) * 2015-01-30 2015-07-22 重庆市云阳曲轴有限责任公司 Bent axle drilling machine special fixture
CN105479216A (en) * 2014-09-18 2016-04-13 泰州自行车三套轴总厂 Crankshaft drilling clamp
CN207414856U (en) * 2017-10-13 2018-05-29 重庆瑁得机械制造有限公司 A kind of clamping device for Crankshaft Machining
CN108481047A (en) * 2018-06-26 2018-09-04 福建工程学院 A kind of fixture that can adjust installation position of drive shafting

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20020046047A (en) * 2000-12-12 2002-06-20 류정열 Apparatus for fixing crank on deburring
CN203956589U (en) * 2014-06-30 2014-11-26 嘉兴市宏丰机械有限公司 A kind of brill bent axle major axis centre hole clamp
CN105479216A (en) * 2014-09-18 2016-04-13 泰州自行车三套轴总厂 Crankshaft drilling clamp
CN204487220U (en) * 2015-01-30 2015-07-22 重庆市云阳曲轴有限责任公司 Bent axle drilling machine special fixture
CN207414856U (en) * 2017-10-13 2018-05-29 重庆瑁得机械制造有限公司 A kind of clamping device for Crankshaft Machining
CN108481047A (en) * 2018-06-26 2018-09-04 福建工程学院 A kind of fixture that can adjust installation position of drive shafting

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