CN210099817U

CN210099817U - Counter weight clamping device of crankshaft eccentric machining device

Info

Publication number: CN210099817U
Application number: CN201920562003.2U
Authority: CN
Inventors: 张瑞洋
Original assignee: Kunshan Daiyi Precision Machinery Co Ltd
Current assignee: Kunshan Daiyi Precision Machinery Co Ltd
Priority date: 2019-04-24
Filing date: 2019-04-24
Publication date: 2020-02-21
Anticipated expiration: 2029-04-24

Abstract

The utility model provides a counter weight clamping device of eccentric processingequipment of bent axle, eccentric processingequipment includes the shell, be equipped with bent axle fixture in the shell, bent axle fixture end is equipped with counter weight mechanism, and when this device used, the interior pull plate through the rear portion pushed collet can be fast with the bent axle locking, has configured configuration mechanism simultaneously, through the transmission of gear, with the centrifugal force of eccentric production at reverse offset, guarantees stability.

Description

Counter weight clamping device of crankshaft eccentric machining device

Technical Field

The utility model relates to a machining equipment field especially relates to eccentric processingequipment's of bent axle counter weight clamping device.

Background

The crankshaft is the most important component in the engine. It takes the force from the connecting rod and converts it into torque to be output by the crankshaft and drive other accessories on the engine. The crankshaft is subjected to the combined action of centrifugal force of the rotating mass, gas inertia force of periodic variation and reciprocating inertia force, so that the crankshaft is subjected to the action of bending and twisting load.

The machining among the prior art is processing the milling cutter that is usually cylindricality and is processing the work piece, but when processing eccentric part, like the device shown in fig. 1, its principle is to fix a crankshaft, the inside three hydro-cylinders that are equipped with of shell can promote the crankshaft adjusting position, make the crank position of crankshaft at the center of processing, when processing, anchor clamps grasp the crankshaft and rotate, and close to milling cutter, process the work piece, but the problem that exists is difficult fixed for the crankshaft, and because after the position of crankshaft has been adjusted through the promotion of hydro-cylinder, the different cranks of crankshaft must not have centrifugal force when the central point rotates, cause equipment vibrations serious.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a counterweight holding device of a crankshaft eccentric processing device, the eccentric processing device comprises a shell, a crankshaft holding mechanism is arranged in the shell, a counterweight mechanism is arranged at the tail end of the crankshaft holding mechanism,

the crankshaft clamping mechanism comprises an inner pull plate, an outer push rod and a base block, the inner pull plate is pressed on the base block, and two ends of the inner pull plate are connected with pushing mechanisms; the outer push rod is arranged in the base block, a rear seat sleeve is arranged at one end in the outer push rod, an elastic part is arranged in the rear seat sleeve, an elastic chuck is arranged at the other end of the outer push rod, and the outer push rod is sleeved on the elastic chuck to enable the elastic chuck to deform;

the counterweight mechanism is movably connected with the base block.

Preferably, racks are arranged on two sides of the base block.

Preferably, the counterweight mechanism comprises a gear seat fixed in the shell, a cylindrical gear is arranged in the gear seat, the cylindrical gear is combined with the rack, a counterweight tooth block is meshed at the other side of the gear seat, and at least one counterweight block is fixed on the counterweight tooth block.

Preferably, the pushing mechanism is an oil cylinder, and the output end of the oil cylinder is pressed inside the shell.

Preferably, the elastic member is a spring.

Preferably, the elastic chuck comprises an elastic sheet which is annularly arranged, and a conical protruding part is arranged in the middle section of the elastic sheet.

Preferably, the outer push rod is provided with a conical surface inside the position where the elastic chuck is matched, and the conical surface presses on the conical bulge.

Preferably, the inner pulling plate is embedded with a sliding block, the sliding block comprises a frame-shaped plate, a plurality of rolling shafts are arranged in the frame-shaped plate, and the base block is pressed on the rolling shafts.

The utility model provides a counter weight clamping device of eccentric processingequipment of bent axle has following beneficial effect: when the device is used, the elastic chuck is pushed by the inner pull plate at the rear part to quickly lock the crankshaft, and meanwhile, the configuration mechanism is configured, so that the centrifugal force generated by eccentricity is counteracted in the reverse direction through the transmission of the gear, and the stability is ensured.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.

FIG. 1 is a schematic view showing an external structure of a crankshaft eccentric machining apparatus according to the prior art;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a cross-sectional view of fig. 2 of the present invention;

fig. 4 is an installation schematic diagram of the counterweight mechanism of the present invention;

fig. 5 is an installation schematic diagram of the counterweight mechanism of the present invention;

fig. 6 is a schematic view of the collet of the present invention;

wherein, 1, a shell; 2. an inner pulling plate; 3. an outer push rod; 4. a base block; 5. a rear seat cover; 6. an elastic member; 7. an elastic collet; 8. a rack; 9. a gear seat; 10. a cylindrical gear; 11. a counterweight tooth block; 12. a balancing weight; 13. a pushing mechanism; 14. a frame-shaped plate; 15. a roller; 16. a spring plate; 17. a conical boss; 18. a crankshaft.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in fig. 2 and fig. 3, the utility model provides a counterweight holding device of a crankshaft 18 eccentric machining device, the eccentric machining device comprises a shell 1, a crankshaft 18 holding mechanism is arranged in the shell 1, a counterweight mechanism is arranged at the tail end of the crankshaft 18 holding mechanism,

in order to more clearly illustrate the device, fig. 2 shows the device after deleting the casing 1 and the pushing cylinder therein, the crankshaft 18 clamping mechanism comprises an inner pull plate 2, an outer push rod 3 and a base block 4, the inner pull plate 2 presses on the base block 4, and two ends of the inner pull plate 2 are connected with pushing mechanisms 13; be equipped with in base piece 4 outer push rod 3, one end is equipped with back seat cover 5 in the outer push rod 3, be equipped with elastic component 6 in the back seat cover 5, the other end is equipped with collet 7, outer push rod 3 cover make on collet 7 deformation, 18 fixture's of bent axle centre gripping mode is: insert bent axle 18 in collet 7, and the tip extends in back seat cover 5 and presses to elastic component 6 position, presses elastic component 6, and elastic component 6 can be the spring, and simultaneously, the pushing mechanism 13 of interior arm-tie 2 both sides stretches out, and pushing mechanism 13 is the hydro-cylinder, the hydro-cylinder output end press in inside the shell 1, the hydro-cylinder shrink drives interior arm-tie 2 and back seat cover 5 and outer push rod 3. Because the outer pull rod is sleeved on the elastic chuck 7, and due to the structure of the elastic chuck 7, the elastic chuck 7 can be pressed to contract to fix the crankshaft 18 when the outer pull rod is pushed, specifically: as shown in fig. 6, the collet chuck 7 includes an elastic sheet 16 arranged in an annular shape, a conical protrusion 17 is arranged in the middle section of the elastic sheet 16, the crankshaft 18 can be inserted into the elastic sheet 16, a conical surface is arranged inside a position where the outer push rod 3 is matched with the collet chuck 7, the conical surface presses on the conical protrusion 17, when the push rod pushes, the protrusion of the collet chuck 7 is pushed by the inner conical surface, the elastic sheet 16 of the collet chuck 7 can contract mutually, the crankshaft 18 is fixed, after the processing is completed, the oil cylinder extends out to drive the outer pull rod to contract, the collet chuck 7 is loosened, and meanwhile, the inner elastic piece 6 applies a pushing force to the crankshaft 18, the crankshaft 18 is slightly ejected, and the blanking is facilitated.

In order to prevent the centrifugal force of the crankshaft 18 from causing the device to vibrate during rotation, a counterweight mechanism is arranged on the base block 4, specifically: as shown in fig. 4 and 5, racks 8 are disposed on two sides of the base block 4, the counterweight mechanism includes a gear seat 9 fixed in the housing 1, a cylindrical gear 10 is disposed in the gear seat 9, the cylindrical gear 10 is combined with the racks 8, a counterweight toothed block 11 is engaged with the other side of the gear seat, at least one counterweight block 12 is fixed on the counterweight toothed block 11, and it is described that a rectangular space where the counterweight block 12 slides is reserved inside the housing 1, and the principle is as follows: when a certain crank needs to be machined, the clamping mechanism is moved through the pushing oil cylinder of the equipment, so that the crank to be machined of the crankshaft 18 is in the central position, an acting force is exerted on the middle clamping mechanism due to the action of centrifugal force, the counterweight tooth block 11 is arranged and can be meshed with the cylindrical gear 10, when the pushing oil cylinder of the equipment pushes the clamping mechanism, the base block 4 can be displaced, the cylindrical gear 10 matched with the base block rotates at the moment, the counterweight tooth block 11 matched with the cylindrical gear 10 moves in the reverse direction, the reverse weight can be balanced, the centrifugal force cannot be caused by high-speed rotation in the machining process, the stability of the equipment is greatly improved, meanwhile, because the base block 4 and the inner pulling block move relatively, a sliding block is embedded in the inner pulling plate 2 and comprises a frame-shaped plate 14, and a plurality of rolling shafts 15 are arranged in the frame-shaped plate 14, the base block 4 is pressed on the rolling shaft 15, and a bearing is arranged between the end part of the rolling shaft 15 and the frame, so that the sliding is smoother.

Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A counter weight clamping device of a crankshaft eccentric machining device comprises a shell and is characterized in that a crankshaft clamping mechanism is arranged in the shell, a counter weight mechanism is arranged at the tail end of the crankshaft clamping mechanism,

the counterweight mechanism is movably connected with the base block.

2. The apparatus as claimed in claim 1, wherein racks are formed on both sides of the base block.

3. The apparatus as claimed in claim 2, wherein the weight holding mechanism comprises a gear seat fixed in the housing, the gear seat has a cylindrical gear engaged with the rack, and a weight block engaged with the other side of the gear seat and having at least one weight fixed thereon.

4. The apparatus of claim 1, wherein the pushing mechanism is a cylinder, and an output end of the cylinder is pressed into the housing.

5. The apparatus of claim 1, wherein the elastic member is a spring.

6. The counterweight holding device for the eccentric crankshaft machining device according to claim 1, wherein the collet comprises an annularly arranged spring plate, and a conical protrusion is arranged in the middle section of the spring plate.

7. The apparatus as claimed in claim 6, wherein a tapered surface is formed inside a position where the outer push rod is engaged with the collet, and the tapered surface presses the tapered protrusion.

8. The apparatus as claimed in claim 1, wherein a sliding block is embedded in the inner pulling plate, the sliding block comprises a frame-shaped plate, a plurality of rollers are arranged in the frame-shaped plate, and the base block presses on the rollers.