CN112846351A

CN112846351A - Fixed-length cutting device for crankshaft

Info

Publication number: CN112846351A
Application number: CN202011552561.4A
Authority: CN
Inventors: 文勤; 金礼; 黄长青; 马权钱
Original assignee: Anhui Huadan Machinery Manufacturing Co ltd
Current assignee: Anhui Huadan Machinery Manufacturing Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-05-28

Abstract

The invention discloses a fixed-length cutting device for a crankshaft, which comprises a workbench, wherein a driving mechanism is fixedly arranged on one side of the top of the workbench, the driving mechanism comprises a slide rail, a first lead screw penetrates through the middle of the slide rail, a slide seat is arranged on the slide rail, the bottom of the slide seat is in threaded fit with the first lead screw, a pushing mechanism is fixedly arranged on the top of the slide seat, a first gear is fixedly arranged at one end of the first lead screw and is meshed with a second gear, a rotating shaft of the second gear is connected with an output shaft of a first motor through a belt, a blanking port is formed in the other side of the top of the workbench, and a cutting mechanism is fixedly arranged on the surface of. The crankshaft blank is clamped and fixed by the pushing mechanism, so that the crankshaft blank can be effectively prevented from moving or falling off during cutting, the cutting accuracy of the crankshaft is improved, and the crankshaft blank can be intermittently pushed to move towards one end of the cutting mechanism by matching the driving mechanism and the pushing mechanism, so that the crankshaft cut every time keeps a fixed length.

Description

Fixed-length cutting device for crankshaft

Technical Field

The invention relates to the field of engine crankshaft machining equipment, in particular to a fixed-length crankshaft cutting device.

Background

The crankshaft is the main rotating part of the engine, and after the connecting rod is installed, the crankshaft can bear the up-and-down (reciprocating) motion of the connecting rod to be changed into a circulating (rotating) motion. The crank-slider mechanism mainly comprises a main journal and a connecting rod journal, wherein the main journal is arranged on a cylinder body, the connecting rod journal is connected with a connecting rod big end hole, and a connecting rod small end hole is connected with a cylinder piston, and is a typical crank-slider mechanism. The processing raw materials of bent axle are the blank that the casting obtained, in the course of working, at first need cut the blank for the length of blank is unanimous with the length of finished product bent axle, then polishes the main journal position, makes the main journal smooth, avoids wearing and tearing, increase of service life

The connecting rod is held by hands to cut blank pieces by workers mostly in the prior art, and the connecting rod has the defects that on one hand, the blank pieces are easily fatigued when being held by the workers for a long time, the labor intensity of the workers is high, the potential safety hazard is also realized, the accuracy of cuts is difficult to guarantee by the workers, and unqualified waste pieces are easily caused.

Disclosure of Invention

In order to solve the defects mentioned in the background art, the invention aims to provide a crankshaft fixed-length cutting device, a crankshaft blank can be effectively prevented from moving or falling off during cutting by clamping and fixing a pushing mechanism, the crankshaft blank cutting accuracy is improved, the crankshaft blank can be intermittently pushed to move towards one end of a cutting mechanism by matching a driving mechanism and the pushing mechanism, and the moving distance of each time is the same, so that the crankshaft cut at each time is kept at a fixed length.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a bent axle fixed length cutting device, comprises a workbench, workstation bottom fixed mounting supporting leg, workstation top one side fixed mounting actuating mechanism, actuating mechanism includes the slide rail, run through in the middle of the slide rail and be equipped with first lead screw, first lead screw bilateral symmetry is equipped with the slide bar, first lead screw rotates with the slide rail and is connected, be equipped with the sliding seat on the slide rail, sliding seat bottom with first lead screw thread fit, sliding seat top fixed mounting pushing mechanism, first lead screw one end fixed mounting first gear, first gear and second gear meshing, the second gear is the gear that lacks the tooth, the second gear rotates with the workstation and is connected, the axis of rotation of second gear passes through the belt and is connected with the output shaft of first motor, first motor fixed mounting is in the workstation bottom, the blanking mouth has been seted up to workstation top opposite side, the workstation fixed surface installation cutting mechanism of blanking mouth rear side, the workstation fixed surface installation supporting seat of blanking mouth left and right sides.

Further, pushing mechanism includes the bottom plate, fixed mounting U type frame on the bottom plate, and cutting mechanism one side fixed mounting limiting plate is kept away from to U type frame, and U type frame inside is equipped with the centre gripping subassembly.

Further, the centre gripping subassembly includes solid fixed splint and movable clamp plate, and solid fixed splint fixed mounting is in the middle of the bottom plate top, and movable clamp plate top both sides fixed mounting guide bar, the push pedal is run through to the guide bar upper end, and the guide bar surface between push pedal and the movable clamp plate is equipped with the spring, and the push pedal top is connected with electric putter, and electric putter fixed mounting is at U type frame top.

Furthermore, an arc-shaped groove is formed in one side, opposite to the movable clamping plate, of the fixed clamping plate, and anti-slip pads are fixedly installed in the arc-shaped grooves of the fixed clamping plate and the movable clamping plate.

Further, cutting mechanism includes the stand, stand bottom and workstation fixed connection, the stand is close to blanking mouth one side and has been seted up vertical mounting groove, run through being equipped with the second lead screw in the mounting groove, the second lead screw rotates with the stand to be connected, the output shaft of second lead screw top and second motor, fixed mounting slider on the second lead screw, slider and second lead screw thread fit, fixed mounting cutting seat on the slider, cutting seat lateral wall fixed mounting third motor, cutting seat bottom fixed mounting knife rest, fixed mounting cutting knife on the knife rest, the cutting knife rotates with the knife rest to be connected, the pivot of cutting knife passes through the belt and is connected with the output shaft of third motor.

Further, the bottom of the supporting seat is fixedly connected with the workbench, an arc-shaped groove is formed in the top of the supporting seat, and the bottom surface of the arc-shaped groove of the supporting seat is flush with the bottom surface of the arc-shaped groove of the fixed clamping plate.

The invention has the beneficial effects that:

the push plate is pushed to move downwards by the electric push rod, the movable clamping plate is pushed by the push plate through the spring, and the movable clamping plate and the fixed clamping plate are matched to clamp and fix the crankshaft blank, so that the crankshaft blank can be effectively prevented from moving or falling off during cutting, and the accuracy of crankshaft cutting is improved.

According to the invention, the first motor drives the second gear to rotate, the second gear is a gear with missing teeth, the second gear is meshed with the first gear to drive the first screw rod to rotate intermittently, the first screw rod rotates intermittently to drive the sliding seat to move intermittently, so that the pushing mechanism pushes the crankshaft blank to move towards one end of the cutting mechanism, and the moving distance of each time is the same, thus the crankshaft cut each time is kept at a fixed length.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic view showing the overall construction of a device for cutting a crankshaft to length according to the present invention;

FIG. 2 is a top plan view of the crankshaft cut-to-length apparatus of the present invention;

FIG. 3 is a left side view of the crankshaft cut-to-length apparatus of the present invention;

FIG. 4 is a right side view of the crankshaft cut-to-length apparatus of the present invention;

FIG. 5 is a schematic structural view of a drive mechanism of the fixed length cutting device for the crankshaft of the present invention;

FIG. 6 is a schematic structural view of a pushing mechanism of the fixed length cutting device for the crankshaft of the present invention;

FIG. 7 is a schematic view of the structure of the clamping assembly of the crankshaft cut-to-length device of the present invention;

fig. 8 is a schematic structural view of a cutting mechanism of the crankshaft fixed length cutting device of the invention.

In the figure:

1-a workbench, 2-a driving mechanism, 3-a sliding rail, 4-a first screw rod, 5-a sliding rod, 6-a sliding seat, 7-a pushing mechanism, 8-a first gear, 9-a second gear, 10-a first motor, 11-a blanking port, 12-a cutting mechanism, 13-a supporting seat, 14-a bottom plate, 15-a U-shaped frame, 16-a limiting plate, 17-a clamping component, 18-a fixed clamping plate, 19-a movable clamping plate, 20-a guide rod, 21-a pushing plate, 22-a spring, 23-an electric push rod, 24-an upright post, 25-a mounting groove, 26-a second screw rod, 27-a second motor, 28-a sliding block, 29-a cutting seat, 30-a third motor, 31-a knife rest and 32-a cutting knife.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

As shown in figure 1, a crankshaft fixed-length cutting device comprises a workbench 1, supporting legs are fixedly installed at the bottom of the workbench 1, a driving mechanism 2 is fixedly installed at one side of the top of the workbench 1, the driving mechanism 2 comprises a slide rail 3, a first lead screw 4 penetrates through the middle of the slide rail 3, slide bars 5 are symmetrically arranged at two sides of the first lead screw 4, the first lead screw 4 is rotatably connected with the slide rail 3, a sliding seat 6 is arranged on the slide rail 3, the bottom of the sliding seat 6 is in threaded fit with the first lead screw 4, a pushing mechanism 7 is fixedly installed at the top of the sliding seat 6, a first gear 8 is fixedly installed at one end of the first lead screw 4, the first gear 8 is meshed with a second gear 9, the second gear 9 is a gear with missing teeth, the second gear 9 is rotatably connected with the workbench 1, the rotating shaft of the second gear 9 is connected with an output shaft of a first motor 10 through a belt, the first motor 10 is fixedly installed at the bottom, a cutting mechanism 12 is fixedly arranged on the surface of the workbench 1 at the rear side of the blanking port 11, and supporting seats 13 are fixedly arranged on the surfaces of the workbench 1 at the left side and the right side of the blanking port 11.

The pushing mechanism 7 comprises a bottom plate 14, a U-shaped frame 15 is fixedly installed on the bottom plate 14, a limiting plate 16 is fixedly installed on one side, far away from the cutting mechanism 12, of the U-shaped frame 15, and a clamping assembly 17 is arranged inside the U-shaped frame 15.

The clamping assembly 17 comprises a fixed clamping plate 18 and a movable clamping plate 19, the fixed clamping plate 18 is fixedly mounted in the middle of the top of the bottom plate 14, guide rods 20 are fixedly mounted on two sides of the top of the movable clamping plate 19, the upper end of each guide rod 20 penetrates through a push plate 21, a spring 22 is arranged on the surface of each guide rod 20 between each push plate 21 and the corresponding movable clamping plate 19, the top of each push plate 21 is connected with an electric push rod 23, and the electric push rods 23 are fixedly mounted at the top of the U-.

The opposite sides of the fixed clamping plate 18 and the movable clamping plate 19 are provided with arc grooves, and anti-skid pads are fixedly arranged in the arc grooves of the fixed clamping plate 18 and the movable clamping plate 19.

Cutting mechanism 12 includes stand 24, stand 24 bottom and 1 fixed connection of workstation, vertical mounting groove 25 has been seted up to stand 24 near blanking mouth 11 one side, it is equipped with second lead screw 26 to run through in the mounting groove 25, second lead screw 26 rotates with stand 24 and is connected, the output shaft of 26 tops of second lead screw and second motor 27, fixed mounting slider 28 on the second lead screw 26, slider 28 and the 26 screw-thread fit of second lead screw, fixed mounting cutting seat 29 on the slider 28, cutting seat 29 lateral wall fixed mounting third motor 30, cutting seat 29 bottom fixed mounting knife rest 31, fixed mounting cutting knife 32 on the knife rest 31, cutting knife 32 rotates with knife rest 31 and is connected, the pivot of cutting knife 32 passes through the belt and is connected with the output shaft of third motor 30.

The bottom of the supporting seat 13 is fixedly connected with the workbench 1, an arc-shaped groove is formed in the top of the supporting seat 13, and the bottom surface of the arc-shaped groove of the supporting seat 13 is flush with the bottom surface of the arc-shaped groove of the fixed clamping plate 18.

When the device is used for cutting off the crankshaft, the crankshaft blank 33 needs to be horizontally placed above the fixed clamping plate 18 and the supporting seat 13, one end of the crankshaft blank 33 is abutted to the limiting plate 16, the push plate 21 is pushed to move downwards through the electric push rod 23, the push plate 21 pushes the movable clamping plate 19 through the spring 22, the movable clamping plate 19 and the fixed clamping plate 18 are matched to clamp and fix the crankshaft blank 33, then the second gear 9 is driven to rotate through the first motor 10, the second gear 9 is a tooth-missing gear, the first lead screw 4 is driven to rotate intermittently through the meshing of the second gear 9 and the first gear 8, the sliding seat 6 is driven to move intermittently through the intermittent rotation of the first lead screw 4, the pushing mechanism 7 is enabled to push the crankshaft blank 33 to move towards one end of the cutting mechanism 12, the moving distance is the same every time, and the crankshaft cut off at every time.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.

Claims

1. The fixed-length crankshaft cutting device is characterized by comprising a workbench (1), wherein the bottom of the workbench (1) is fixedly provided with a supporting leg, the top of the workbench (1) is fixedly provided with a driving mechanism (2), the driving mechanism (2) comprises a sliding rail (3), a first lead screw (4) is arranged in the middle of the sliding rail (3) in a penetrating manner, sliding rods (5) are symmetrically arranged on two sides of the first lead screw (4), the first lead screw (4) is rotatably connected with the sliding rail (3), a sliding seat (6) is arranged on the sliding rail (3), the bottom of the sliding seat (6) is in threaded fit with the first lead screw (4), a pushing mechanism (7) is fixedly arranged on the top of the sliding seat (6), a first gear (8) is fixedly arranged on one end of the first lead screw (4), the first gear (8) is meshed with a second gear (9), and the second gear (9) is a gear with missing teeth, second gear (9) rotate with workstation (1) and be connected, the output shaft of belt and first motor (10) is passed through in the axis of rotation of second gear (9), first motor (10) fixed mounting is in workstation (1) bottom, blanking mouth (11) have been seted up to workstation (1) top opposite side, workstation (1) fixed surface installation cutting mechanism (12) of blanking mouth (11) rear side, workstation (1) fixed surface installation supporting seat (13) of blanking mouth (11) left and right sides.

2. The crankshaft fixed-length cutting device according to claim 1, wherein the pushing mechanism (7) comprises a bottom plate (14), a U-shaped frame (15) is fixedly installed on the bottom plate (14), a limiting plate (16) is fixedly installed on one side, far away from the cutting mechanism (12), of the U-shaped frame (15), and a clamping assembly (17) is arranged inside the U-shaped frame (15).

3. The crankshaft fixed-length cutting device according to claim 2, wherein the clamping assembly (17) comprises a fixed clamping plate (18) and a movable clamping plate (19), the fixed clamping plate (18) is fixedly installed in the middle of the top of the bottom plate (14), guide rods (20) are fixedly installed on two sides of the top of the movable clamping plate (19), the upper ends of the guide rods (20) penetrate through a push plate (21), a spring (22) is arranged on the surface of each guide rod (20) between the push plate (21) and the movable clamping plate (19), the top of each push plate (21) is connected with an electric push rod (23), and the electric push rod (23) is fixedly installed on the top of the U-shaped frame (15).

4. A crankshaft fixed length cutting device according to claim 3, characterized in that, the opposite sides of the fixed clamping plate (18) and the movable clamping plate (19) are provided with arc-shaped grooves, and non-slip mats are fixedly arranged in the arc-shaped grooves of the fixed clamping plate (18) and the movable clamping plate (19).

5. The crankshaft fixed-length cutting device according to claim 1, wherein the cutting mechanism (12) comprises an upright column (24), the bottom of the upright column (24) is fixedly connected with the workbench (1), one side of the upright column (24) close to the blanking port (11) is provided with a vertical installation groove (25), a second lead screw (26) penetrates through the installation groove (25), the second lead screw (26) is rotatably connected with the upright column (24), the top end of the second lead screw (26) is connected with an output shaft of a second motor (27), a sliding block (28) is fixedly installed on the second lead screw (26), the sliding block (28) is in threaded fit with the second lead screw (26), a cutting seat (29) is fixedly installed on the sliding block (28), a third motor (30) is fixedly installed on the side wall of the cutting seat (29), and a tool rest (31) is fixedly installed at the bottom of the cutting seat (29), a cutting knife (32) is fixedly mounted on the knife rest (31), the cutting knife (32) is rotatably connected with the knife rest (31), and a rotating shaft of the cutting knife (32) is connected with an output shaft of the third motor (30) through a belt.

6. The crankshaft fixed length cutting device according to claim 1, wherein the bottom of the supporting seat (13) is fixedly connected with the workbench (1), the top of the supporting seat (13) is provided with an arc-shaped groove, and the bottom surface of the arc-shaped groove of the supporting seat (13) is flush with the bottom surface of the arc-shaped groove of the fixed clamping plate (18).