CN214559092U - Crankshaft key groove milling positioning device - Google Patents

Abstract

The utility model discloses a crankshaft keyway milling positioning device, which comprises a base, two shaft end bearing pieces, two compression assemblies and two axial positioning pieces, wherein the shaft end bearing pieces, the compression assemblies and the axial positioning pieces are arranged on the base; the axial positioning piece is arranged on the base between the two shaft end bearing pieces to support the bottom surface of the middle part of the crankshaft; the pressing assembly comprises a telescopic ejector rod and a supporting rod, the telescopic ejector rod is arranged on one side of the crankshaft, a pressing plate extending towards the crankshaft is arranged at the top of the telescopic ejector rod in a sliding mode, a guide groove is formed in the pressing plate and is arranged along the sliding direction of the pressing plate, the supporting rod penetrates through the guide groove, and a limiting block for pressing the pressing plate is arranged at the top of the supporting rod. The supporting rod forms relative motion in the guide groove by the sliding of the pressing plate along the telescopic ejector rod, so that the pressing plate is moved out to one side of the crankshaft, and an operable space is provided above the crankshaft; the operation steps are simplified, and the operation efficiency is improved.

Description

Crankshaft key groove milling positioning device

Technical Field

The utility model belongs to the technical field of positioner, specifically speaking are crankshaft keyway milling positioner.

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. In the milling process of the crankshaft, in order to avoid the problems of poor positioning rigidity and keyway processing deviation, the crankshaft is positioned by adopting the cooperation of an axial positioning piece and a pressing piece. In order to increase the structural hardness of the pressing part, a transition supporting point is added in the middle of the pressing part, and the lever principle is formed to increase the structural strength of the pressing part and simultaneously improve the pressing strength of the crankshaft. In the prior art, the transition support point is formed by penetrating the pressing piece and arranging a limit block for pressing the pressing piece at the top, so that after the crankshaft is processed, the limit block needs to be taken down to move the pressing piece out of the upper part of the crankshaft, and the crankshaft is prevented from being taken down to cause obstruction; however, the above operation is complicated, resulting in a long processing time.

SUMMERY OF THE UTILITY MODEL

For solving to bent axle processing back, compress tightly the complex operation that the piece was taken off, problem that processing time is long, the utility model provides a bent axle keyway mills processing positioner.

The utility model discloses a realize through following technical scheme:

a crankshaft key groove milling positioning device comprises a base, two shaft end bearing pieces, a pressing assembly and an axial positioning piece, wherein the shaft end bearing pieces, the pressing assembly and the axial positioning piece are arranged on the base; the axial positioning piece is arranged on the base between the two shaft end bearing pieces to support the bottom surface of the middle part of the crankshaft; the pressing assembly comprises a telescopic ejector rod and a supporting rod which are arranged on one side of the crankshaft, a pressing plate extending towards the crankshaft is arranged at the top of the telescopic ejector rod in a sliding mode, a guide groove arranged along the sliding direction of the pressing plate is formed in the pressing plate, and a limiting block for pressing the pressing plate is arranged at the top of the supporting rod penetrating through the guide groove and the supporting rod. The supporting rod forms relative motion in the guide groove by the sliding of the pressing plate along the telescopic ejector rod, so that the pressing plate is moved out to one side of the crankshaft, and an operable space is provided above the crankshaft; the operation steps are simplified, and the operation efficiency is improved.

The utility model discloses a further improvement still, above-mentioned clamp plate is whole to be the arc of upwards arching. The arc-shaped pressing plate enhances the structural strength of the pressing plate and can transmit the acting force jacked by the support to the upper part of the crankshaft.

The utility model discloses a further improvement still, the hunch-up high point of above-mentioned clamp plate is in when using between flexible ejector pin and the bracing piece. The arch is arranged between the limiting block and the telescopic ejector rod, so that the arch inclined plane deviating from the telescopic ejector rod is contacted with the limiting block to form a lever fulcrum to compress the crankshaft.

The utility model discloses a further improvement still, above-mentioned guide way is close to bent axle one end and sets up the through-hole that allows the stopper to pass. The pressing plate is convenient to take down from the supporting rod through the through hole.

The utility model discloses a further improvement still, above-mentioned stopper is the spheroid form. The spherical limiting block avoids clamping stagnation of the through hole.

The utility model discloses a further improvement still, above-mentioned flexible ejector pin top is equipped with the backup pad, be equipped with the slide in the backup pad, it is equipped with the slider articulated with the clamp plate to slide in the slide. The clamp plate articulates on the slider, has increased the angle variation range between clamp plate and the backup pad, has increased the adaptation degree to different specification bent axles simultaneously.

The utility model discloses a further improvement still, the top of above-mentioned axle head supporting piece is equipped with the V type notch of placing the bent axle. The radial displacement of the crankshaft is defined by the V-shaped notch.

According to the technical scheme provided by the utility model, the beneficial effects are that: the supporting rod forms relative motion in the guide groove by the sliding of the pressing plate along the telescopic ejector rod, so that the pressing plate is moved out to one side of the crankshaft, and an operable space is provided above the crankshaft; the operation steps are simplified, and the operation efficiency is improved.

Drawings

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural view of a pressing assembly according to an embodiment of the present invention.

In the drawings: 1. the device comprises a base, 2, a shaft end supporting piece, 3, a positioning piece, 4, a crankshaft, 5, a pressing component, 51, a telescopic ejector rod, 511, a supporting plate, 512, a slideway, 52, a supporting rod, 521, a limiting block, 53, a pressing plate, 531, a guide groove, 532 and a through hole.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments, and obviously, the embodiments described below are only some embodiments, not all embodiments of the present invention. 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 scope of protection of this patent.

As shown in the attached drawings, the crankshaft key groove milling positioning device comprises a base 1, two shaft end bearing pieces 2, two pressing assemblies 5 and two axial positioning pieces 3, wherein the shaft end bearing pieces 2, the pressing assemblies 5 and the axial positioning pieces 3 are arranged on the base 1; the top of the shaft end bearing piece 2 is provided with a V-shaped notch for placing the crankshaft 4. The axial positioning piece 3 is arranged on the base 1 between the two shaft end bearing pieces 2 to bear the bottom surface of the middle part of the crankshaft 4. The pressing component 5 comprises a telescopic ejector rod 51 and a support rod 52 which are arranged on one side of the crankshaft 4; the telescopic mandril 51 and the support rod 52 are arranged in sequence from far to near on a connecting line which is vertical to the axial positioning piece 3 and the two end bearing pieces 2. The telescopic ejector rod 51 and the support rod 52 are both of a sleeve structure, threads are arranged on the side wall of the inner connecting rod on the sleeve, and an adjusting nut in threaded connection with the inner connecting rod is rotatably connected to the pipe orifice of the sleeve so as to realize height adjustment of the telescopic ejector rod 51 and the support rod 52. A supporting plate 511 is arranged at the top of the telescopic ejector rod 51, a slide way 512 is arranged on the supporting plate 511, and a slide block is arranged in the slide way 512 in a sliding manner; the top surface of the slider is hinged with a pressure plate 53 extending towards the crankshaft 4. The whole pressing plate 53 is in an upward arched arc shape; the arch high point of the pressure plate 53 is between the telescopic mandril 51 and the support rod 52 when in use. The pressing plate 53 is provided with a guide groove 531 arranged along the sliding direction of the pressing plate 53, and one end of the guide groove 531 close to the crankshaft 4 is provided with a through hole 532. The support rod 52 penetrates through the guide groove 531 to extend upwards, a limiting block 521 capable of penetrating through a through hole 532 is welded to the top of the support rod 52, and the limiting block 521 is spherical.

In summary, when the device is used, the crankshaft 4 is placed on the two end bearings 2 for radial positioning, and the axial positioning element 3 is abutted with the journal of the crankshaft 4 in the middle of the crankshaft 4 from bottom to top. According to the specification of the crankshaft 4, the pressure plate 53 is moved and adjusted towards the direction of the crankshaft 4 along the slide way 512, when the free end of the pressure plate 53 is positioned above the crankshaft 4, the heights of the telescopic ejector rod 51 and the support rod 52 are adjusted adaptively, the limiting block 521 is abutted against the top surface of the pressure plate 53, and the telescopic ejector rod 51 is enabled to support the pressure plate 53 so as to compress the crankshaft 4. In the operation of removing the crankshaft 4, the heights of the telescopic rods 51 and the support rods 52 are first adjusted adaptively so that the pressing plate 53 can move freely along the slide 512 to remove the crankshaft 4. When the crankshaft 4 is large in specification or the pressing assembly 5 needs to be maintained, the pressing plate 53 is turned upwards along the hinged part, and the limiting block 521 smoothly completes the turning of the pressing plate 53 through the through hole 532 of the pressing plate 53.

The utility model discloses a crankshaft keyway milling positioner, through the slip of clamp plate along the flexible ejector pin, make the bracing piece form relative motion in the guide way to accomplish the removal operation of clamp plate to crankshaft one side, provide the operable space above the bent axle; the operation steps are simplified, and the operation efficiency is improved.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The terms "upper", "lower", "outside", "inside" and the like in the description and claims of the present invention and the above drawings are used for distinguishing relative relationships in positions, if any, and are not necessarily given qualitatively. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these 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 (7)

1. The crankshaft key groove milling positioning device is characterized by comprising a base (1), two shaft end bearing pieces (2), a pressing assembly (5) and an axial positioning piece (3), wherein the shaft end bearing pieces (2) are arranged on the base (1), and are distributed at two ends of the base (1); the axial positioning piece (3) is arranged on the base (1) between the two shaft end bearing pieces (2) to bear the bottom surface of the middle part of the crankshaft (4); compress tightly subassembly (5) including setting up in flexible ejector pin (51) and bracing piece (52) of bent axle (4) one side, the top of flexible ejector pin (51) slides and is equipped with clamp plate (53) that extend to bent axle (4), set up guide way (531) that set up along clamp plate (53) slip direction on clamp plate (53), guide way (531) are run through in bracing piece (52), and the top of bracing piece (52) is equipped with and compresses tightly stopper (521) of clamp plate (53).

2. The crankshaft keyway milling positioning device according to claim 1, characterized in that the pressure plate (53) is generally upwardly arcuate.

3. A crankshaft keyway milling positioning device according to claim 2, characterized in that the high point of the cambering of the pressure plate (53) is located between the telescopic ram (51) and the support bar (52) when in use.

4. The crankshaft keyway milling positioning device according to any one of claims 1 to 3, characterized in that a through hole (532) allowing the limiting block (521) to pass through is formed at one end of the guide groove (531) close to the crankshaft (4).

5. The crankshaft keyway milling positioning device according to claim 4, characterized in that the stop block (521) is spherical.

6. The crankshaft keyway milling positioning device according to claim 1, wherein a supporting plate (511) is arranged at the top of the telescopic ejector rod (51), a slide way (512) is arranged on the supporting plate (511), and a slide block hinged with the pressure plate (53) is slidably arranged in the slide way (512).

7. A crankshaft keyway milling positioning device according to claim 1, characterized in that the top of the shaft end bearing (2) is provided with a V-shaped recess for placing the crankshaft (4).

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