CN202494436U - Centering device - Google Patents

Abstract

The utility model discloses a centering device, which includes a centering platform for placing parts. The centering platform has a placement plane that is flush with the horizontal plane when in use. The centering platform is provided with a jet rotor whose rotation axis is perpendicular to the placement plane. The jet-type rotor includes a rotating shaft, on which a supporting body extending radially along the rotating shaft is arranged, and an air channel communicating with each other is arranged inside the rotating shaft and the supporting body, and the overhanging end of the supporting body is provided with a There is an included angle between the air outlet connected to the air passage and the straight line passing through the center of the air outlet. The utility model only needs to place the parts on the centering platform to generate a stable air flow through the jet rotor. The field realizes automatic centering without manual operation, reduces manual errors, makes the centering of parts more accurate, and the overall force of the parts is small, it is not easy to deform, and the scrap rate is reduced.

Description

centering device

technical field

The utility model relates to a centering device, in particular to a centering device for a hollow rotating body such as an annular body or a sleeve.

Background technique

Thin-walled bearings are the thinnest bearings in the dimension series. The inner and outer rings of this type of bearing have a large inner diameter or outer diameter, and the wall is very thin. The radial dimension of the cross section is less than a quarter of the inner diameter and less than twice the diameter of the rolling elements. Bearings with stricter fit tolerances are often recommended for places where precise control is required or where the dismounting position of the rotating shaft is harsh. When the bearing ring is measured, it is necessary to keep the center of the bearing ring consistent with the center of the measuring platform as much as possible. This requires Centering the center of the bearing ring, the thin-walled bearing ring is easily deformed during the centering process, and effective measurement cannot be performed, and it is difficult to accurately center the bearing ring with the existing technology, resulting in dimensional accuracy. Direct and accurate detection, this problem has always been a major problem in the domestic bearing industry, and even the entire machinery industry.

Utility model content

The purpose of the utility model is to provide a centering device capable of accurately positioning the center of the bearing ring.

In order to achieve the above object, the utility model adopts the following technical scheme: the centering device includes a centering platform for placing parts, the centering platform has a placement plane that is flush with the horizontal plane when in use, and the centering platform is provided with a rotation axis and a A jet-type rotor with a vertical plane is placed, and the jet-type rotor includes a rotating shaft on which a support extending radially along the rotating shaft is arranged, and the interior of the rotating shaft and the supporting body is provided with interconnected air passages. The extending end is provided with an air injection port connected with the air channel, and the air injection channel connected with the air channel has an included angle with the straight line passing through the center of the air injection port.

The support body is a streamlined wing plate evenly distributed along the circumferential direction of the rotating shaft, the air jets are set on the same side of each wing plate along the circumferential direction, and the distances between the air jets and the center line of the rotating shaft are equal , the angles of inclination of each jet channel are the same.

The centering platform is provided with supporting ribs extending radially from the rotating shaft of the jet rotor to the surroundings and uniformly distributed along the circumferential direction for supporting parts, and the top surface of the supporting ribs forms the placement plane

The centering device of the utility model only needs to place the parts on the centering platform, and realizes automatic centering through the stable airflow field generated by the jet rotor, without manual operation, which reduces manual errors and makes the centering of parts more accurate, and The overall force of the part is small, and it is not easy to deform, which reduces the scrap rate.

Further, it is arranged in the shape of a wing, which reduces the resistance generated by the jet rotor during rotation.

Further, the supporting convex strip is used to support the part, which reduces the friction between the part and the centering platform.

Description of drawings

Fig. 1 is the semi-sectional view of the intake pipe in the embodiment of the present utility model;

Fig. 2 is a half-sectional view of the wing in an embodiment of the present utility model;

Fig. 3 is the sectional view of wing in the embodiment of the present utility model;

Fig. 4 is the structural representation of jet rotor in the embodiment of the present utility model;

Fig. 5 is the principle diagram of the airflow decomposition ejected in the embodiment of the present utility model;

Fig. 6 is the working principle diagram of the gas field in the embodiment of the utility model;

Fig. 7 is a schematic diagram of the application of the embodiment of the present invention.

Detailed ways

The embodiment of the centering device, as shown in Figures 1-7, includes a centering platform 1 for placing parts, the centering platform 1 has a placement plane that is flush with the horizontal plane during use, and the centering platform 1 is provided with a rotation axis The jet rotor perpendicular to the placement plane, the jet rotor includes a shaft 3, the shaft 3 is provided with a support body 5 extending radially along the shaft through a sleeve 4, and the support body 5 is evenly distributed along the circumferential direction of the shaft 3 There are three streamlined wing plates, the rotating shaft 3 and the supporting body 5 are provided with interconnected air passages, and the air passages include the air guide ring groove 41 provided on the inner wall of the shaft sleeve 4, and the supporting body and the rotating shaft are both A channel communicating with the air guide ring groove is provided, and the overhanging end of the support body 5 is provided with an air injection port 52 communicating with the channel 51 provided thereon, and the air injection port 52 is arranged on the same side in the circumferential direction of the support body, and has The distances from the centerlines of the rotating shafts are all equal, and the air jet channel 53 connected to the air jet port 52 has the same angle with the straight line passing through the center of the corresponding air jet port. The principle of the airflow flowing through the support body 5 when the support body 5 rotates As shown in the figure, the streamlined design can make the airflow flow to the tail of the support body more stably, reduce the separation of the airflow, and then reduce the vacuum area, so the support body of this structure can reduce the resistance of the air during the rotation process. The upper and lower limit edges of the upper and lower directions of the shaft sleeve 4, and the centering platform 1 are provided with supports for supporting parts that extend radially from the rotating shaft 3 of the jet rotor to the surroundings and are evenly distributed along the circumferential direction. The convex strip 2, the top surface of the supporting convex strip 2 forms the placement plane.

When the above-mentioned embodiment is in use, as shown in Figure 5-7, when the high-speed airflow is obliquely ejected from the air nozzle, the decomposition principle of the ejected airflow is as shown in Figure 5, and the airflow Q can be decomposed into components along the circular motion track of the rotor. The tangential direction Q1 and the normal direction Q2, the airflow along the tangential direction Q1 will produce a reaction force on the rotor, pushing the rotor to rotate counterclockwise at high speed. Produce continuous and equal airflow uniformly distributed along the circumferential direction of its trajectory, thereby generating a stable airflow field as shown in Figure 6. The arrow in the circumferential direction in the figure is the direction of blade rotation, and the center of this airflow field is the rotor rotor The center of the center is also the reference center of the entire centering device. As shown in Figure 7, the part 8 is placed on the centering platform. At this time, the high-pressure gas enters from the inlet pipe and enters the air guide ring groove from the outlet hole. The air guide ring groove enters the air passage of the jet rotor, and is ejected from the jet port at high speed. The reaction force of the Q1 gas makes the jet rotor start to rotate, generating an air flow field. If the center of the workpiece does not coincide with the reference center, the force on the workpiece will inevitably Only when the workpiece moves to the center of the workpiece and the reference center completely coincides, the entire workpiece will be balanced and stop moving, so as to achieve the purpose of automatic centering. The principle of workpiece centering is shown in Figure 6. The whole centering In the centering process, only the part to be tested is placed on the platform, and then the centering process is automatically completed without manual assistance, which reduces manual errors. The jet rotor device is used for centering, so that the whole part of the part under test is affected by the centering process. The force is small, it is not easy to deform, and the scrap rate is reduced. The centering process of the whole centering device takes less time, and the operator is not required to be high. It is hygienic and environmentally friendly, which indirectly increases the profit rate.

In other embodiments, the centering platform may not be provided with supporting ribs, and the parts may be directly placed on the centering platform.

In other embodiments, the rotating shaft can also be fixedly connected with the supporting body.

In other embodiments, the shape of the support body can also be a common rod shape or a disc.

In other embodiments, the number of wing plates on the jet rotor shown is not limited to the above three, so those skilled in the art can also set it to two or more as required.

Claims (3)

1. centring means; It is characterized in that, comprise the centering platform that is used to place part, the centering platform has placement plane concordant with surface level when using; The centering platform is provided with pivot center and places the vertical rotorjet in plane; Described rotorjet comprises rotating shaft, and rotating shaft is provided with the supporter that radially extends along rotating shaft, and rotating shaft and supporter set inside have the air flue that is interconnected; The projecting end of described supporter is provided with the puff prot that is connected with air flue, and the straight line that air-jet channel that said puff prot is communicated with air flue and puff prot are crossed the center has an angle.

2. centring means according to claim 1; It is characterized in that; Described supporter is for having a fairshaped wing plate along the circumferencial direction of rotating shaft is equally distributed; Described puff prot is opened in each wing plate the same side along the circumferential direction, and the distance of each puff prot tool shaft centerline equates that all the angle that each air-jet channel tilts is identical.

3. centring means according to claim 1; It is characterized in that; The centering platform is provided with from the rotating shaft of rotorjet and extends the support raised line that is used for support part that is provided with and along the circumferential direction is uniformly distributed with to radiation all around, and the end face that supports raised line forms described placement plane.

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