CN218725319U

CN218725319U - Crankshaft detection device

Info

Publication number: CN218725319U
Application number: CN202222574100.8U
Authority: CN
Inventors: 高启光; 隋安东; 崔瑜; 陈雷; 李朋根; 涂胜
Original assignee: Yantai Aidi Aichuang Robot Technology Co ltd
Current assignee: Yantai Aidi Aichuang Robot Technology Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-03-24
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to the technical field of mechanical detection, in particular to a crankshaft detection device, which comprises a lower top and an upper top, wherein the lower top and the upper top can be driven to rotate; a sleeve is fixedly arranged outside the lower center, an inner ring of the deep groove ball bearing is sleeved at the upper end of the sleeve, an outer ring of the deep groove ball bearing is in interference fit with a circular ring, and the circular ring extends inwards to form a circular ring convex block; the upper end of the sleeve extends upwards to form a sleeve bump, and the free end of the power rod with the steel ball is positioned between the circular ring bump and the sleeve bump; the upper end face of the sleeve on the left side of the sleeve bump is fixedly connected with a pressing block, a ball head jackscrew is screwed on the pressing block, and the ball head of the ball head jackscrew is abutted against the left side face of the circular ring bump. The utility model discloses it is more convenient to make the bent axle detect, and the accuracy is higher.

Description

Crankshaft detection device

Technical Field

The utility model relates to a mechanical detection technical field specifically is a crankshaft detection device.

Background

When detecting a crankshaft workpiece, the crankshaft needs to be placed on the table top, so that the axis of the crankshaft keeps rotating vertically, but only force tangential to the rotating shaft of the crankshaft can be applied to the crankshaft, and no force in other directions can be applied, otherwise, the axis of the crankshaft is deflected, and the detection is inaccurate. The current detection method is manual careful, repeated probing and adjustment, so that the detection process is complex and slow, time waste is caused, and the detection efficiency is reduced. At present, no device convenient for detection exists.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model discloses a crankshaft detection device, the technical scheme who takes is:

a crankshaft detection device comprises a lower center and an upper center, wherein the lower center and the upper center can be driven to rotate, the upper center can rotate freely, the axis of a crankshaft workpiece is vertically jacked between the lower center and the upper center, a hoop is sleeved on the crankshaft workpiece and fixedly connected with a power rod, a round hole is formed in the free end of the power rod, a steel ball is in interference fit in the round hole, and the diameter of the steel ball is larger than the thickness of the power rod; a sleeve is fixedly arranged outside the lower center, an inner ring of the deep groove ball bearing is sleeved at the upper end of the sleeve, an outer ring of the deep groove ball bearing is in interference fit with a circular ring, and the circular ring extends inwards to form a circular ring convex block; the upper end of the sleeve extends upwards to form a sleeve bump, and the free end of the power rod with the steel ball is positioned between the circular ring bump and the sleeve bump; the upper end face of the sleeve on the left side of the sleeve bump is fixedly connected with a pressing block, a ball head jackscrew is screwed on the pressing block, and the ball head of the ball head jackscrew is abutted against the left side face of the circular ring bump.

Furthermore, the left side face of the sleeve bump is parallel to the right side face of the circular ring bump and is tangent to the steel ball respectively, and the left side face of the circular ring bump is perpendicular to the axis of the ball head jackscrew and is tangent to the ball head of the ball head jackscrew.

Furthermore, a semicircular gap is formed at the lower end close to the sleeve, and the semicircular ring is arranged in the semicircular gap and is fastened with the sleeve through a screw to fixedly connect the lower tip and the sleeve together.

Compared with the prior art, the utility model discloses except that the tangential force does not have the power of other directions when can realizing driving crankshaft and top synchronous revolution, and two-way transmission zero clearance, it is more convenient to make the bent axle detect, and the accuracy is higher, has reduced the time waste, has improved detection efficiency.

Drawings

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

Fig. 2 is a sectional view of fig. 1.

Fig. 3 is an exploded view of the components of fig. 1.

Fig. 4 is a schematic structural view of the present invention after being connected to a crankshaft workpiece.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" are to be understood broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The crankshaft detection device comprises a lower center 5 capable of being driven to rotate and an upper center (not shown in the figure) capable of rotating freely, wherein the axis of a crankshaft workpiece 100 is vertically propped between the lower center 5 and the upper center, a hoop 7 is sleeved on the crankshaft workpiece 100, the hoop 7 is fixedly connected with a power rod 9, a circular hole is formed in the free end of the power rod 9, a steel ball 10 is in interference fit in the circular hole, and the diameter of the steel ball 10 is larger than the thickness of the power rod 9; the sleeve 2 is fixedly arranged outside the lower tip 5, the inner ring of the deep groove ball bearing 4 is sleeved at the upper end of the sleeve 2, the outer ring of the deep groove ball bearing 4 is in interference fit with the circular ring 8, and the circular ring 8 extends inwards to form a circular ring bump 81; the upper end of the sleeve 2 extends upwards to form a sleeve convex block 21, and the free end of the power rod 9 with the steel balls 10 is positioned between the circular ring convex block 81 and the sleeve convex block 21; the upper end face of the sleeve 2 on the left side of the sleeve bump 21 is fixedly connected with a pressing block 1, a ball head jackscrew 6 is screwed on the pressing block 1, and the ball head of the ball head jackscrew 6 is abutted against the left side face of the circular ring bump 81.

When the ball head of the ball head jackscrew 6 is pressed against the left side surface of the circular ring bump 81, the circular ring 8 rotates anticlockwise under the action of the deep groove ball bearing 4, so that the right side surface of the circular ring bump 81 is pressed against the left side surface of the steel ball 10, and the right side surface of the steel ball 10 is pressed against the left side surface of the sleeve bump 21, so that 3 continuous point contacts are formed.

In another preferred embodiment, the left side of the sleeve projection 21 is parallel to the right side of the circular ring projection 81 and is tangent to the steel ball 10, and the left side of the circular ring projection 81 is perpendicular to the axis of the ball head jackscrew 6 and is tangent to the ball head of the ball head jackscrew 6. The lower end close to the sleeve 2 is provided with a semicircular gap, and the semicircular ring 3 is arranged in the semicircular gap and is fastened with the sleeve 2 through screws to fixedly connect the lower tip 5 and the sleeve 2 together.

When the lower center 5 rotates clockwise under the driving of the driving device, the sleeve bump 21 is driven to rotate clockwise synchronously, the left side surface of the sleeve bump 21 presses against the steel ball 10, because the steel ball 10 is in point contact with the left side surface of the sleeve bump 21, and the steel ball 10 is tangent to the left side surface of the sleeve bump 21, the sleeve bump 21 only applies a force to the power rod 9 relative to the center axis, namely the tangential force of the axis of the crankshaft workpiece 100, so that the crankshaft workpiece 100 rotates clockwise synchronously, and simultaneously, because the left side surface of the sleeve bump 21 presses against the steel ball 10, no gap exists in clockwise rotation.

When the lower tip 5 rotates anticlockwise under the driving of the driving device, the ball head of the ball head jackscrew 6 on the pressing block 1 applies a tangential force to the circular ring lug 81 relative to the center axis, namely the axis of the crankshaft workpiece 100, the circular ring lug 81 simultaneously applies a tangential force to the power rod 9 relative to the center axis, namely the axis of the crankshaft workpiece 100, so that the crankshaft workpiece 100 synchronously rotates clockwise, and simultaneously, the left side surface of the sleeve lug 21 presses against the steel ball 10, so that no gap exists in the clockwise rotation.

The invention is not described in detail in the prior art or in the common general knowledge.

Claims

1. The utility model provides a crankshaft detection device, is including being driven rotatory lower top (5), free rotation's last top, and the vertical top of axis of bent axle work piece (100) is established between top (5) and last top down, its characterized in that: a hoop (7) is sleeved on the crankshaft workpiece (100), the hoop (7) is fixedly connected with a power rod (9), a round hole is formed in the free end of the power rod (9), a steel ball (10) is in interference fit in the round hole, and the diameter of the steel ball (10) is larger than the thickness of the power rod (9); a sleeve (2) is fixedly arranged outside the lower tip (5), an inner ring of the deep groove ball bearing (4) is sleeved at the upper end of the sleeve (2), an outer ring of the deep groove ball bearing (4) is in interference fit with a circular ring (8), and the circular ring (8) extends inwards to form a circular ring convex block (81); the upper end of the sleeve (2) extends upwards to form a sleeve convex block (21), and the free end of the power rod (9) with the steel ball (10) is positioned between the circular ring convex block (81) and the sleeve convex block (21); the upper end face of the sleeve (2) on the left side of the sleeve bump (21) is fixedly connected with a pressing block (1), a bulb jackscrew (6) is in threaded connection with the pressing block (1), and a bulb of the bulb jackscrew (6) is abutted against the left side face of the circular ring bump (81).

2. The crankshaft detection device according to claim 1, wherein: the left side surface of the sleeve convex block (21) is parallel to the right side surface of the circular ring convex block (81) and is respectively tangent to the steel balls (10), and the left side surface of the circular ring convex block (81) is vertical to the axis of the ball head jackscrew (6) and is tangent to the ball head of the ball head jackscrew (6).

3. A crankshaft detection arrangement according to claim 1, wherein: the lower end close to the sleeve (2) is provided with a semicircular gap, and the semicircular ring (3) is arranged in the semicircular gap and is fastened with the sleeve (2) through a screw to fixedly connect the lower tip (5) and the sleeve (2) together.