CN214149832U

CN214149832U - Ball checking device for bearing assembly

Info

Publication number: CN214149832U
Application number: CN202023037453.1U
Authority: CN
Inventors: 陈雪群; 颜治江; 冯志红
Original assignee: Ningbo Renhe Machinery Bearing Co ltd
Current assignee: Ningbo Renhe Machinery Bearing Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-09-07
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a ball ware is tested with bearing assembly includes bearing supporting table, insulating casing and a plurality of ball unit of testing, bearing supporting table sets up the downside at insulating casing, first metal conducting strip is installed to insulating casing's upper end, the second metal conducting strip is installed to the lower extreme, first metal conducting strip and second metal conducting strip are connected through the signal electric wire who is connected with computer PLC, every ball unit of testing includes metal spring and electrically conductive contact pilotage, metal spring's upper end and first metal conducting strip are connected, the lower extreme is connected with the upper end of contact pilotage, the lower extreme of contact pilotage is connected with the contact pilotage, the external diameter that touches the contact pilotage is less than the contact pilotage, the lower extreme that touches the needle is worn out from the downside of second metal conducting strip, touch the needle and the contactless of second metal conducting strip. The ball testing device is reliable in structure, free of frequent maintenance and repair, long in service life, capable of achieving accurate, automatic and efficient judgment of few balls of the bearing, capable of improving bearing assembly efficiency, and capable of effectively preventing the bearing products with few balls from flowing into a subsequent process to cause quality accidents.

Description

Ball checking device for bearing assembly

Technical Field

The utility model relates to a bearing production is with supplementary detection device specifically is a ball inspection ware for bearing assembly.

Background

In the process of assembling and assembling the bearing, a specified number of steel balls are required to be loaded into the inner ring and the outer ring of the bearing, the phenomenon of less ball loading is possible to occur sometimes, in order to avoid the outflow of the less ball bearing, a ball testing station is required to be arranged on a riveting press of an assembly line, and the number of the steel balls of each bearing is detected through a ball testing device, so that the less ball bearing product is prevented from being sent to a customer for use.

The traditional ball testing device is a nylon positioning die manufactured according to the size and the position of a bearing steel ball. When the ball is tested, the steel ball of the bearing is attached to the bottom of the ball pocket of the die, a vent hole of 0.4mm is arranged at the bottom of each ball pocket of the die, all the vent holes are finally connected with an air pipe and connected with an air pressure sensor, and the data of the air pressure sensor is transmitted to a computer. When the ball tester lifts the bearing upwards, the air pipe sucks air, meanwhile, the air pressure sensor receives an air pressure signal, if few balls exist, the air pressure value changes obviously, and the computer judges whether the bearing lacks balls or not according to the set air pressure value. The ball inspection device has certain missing inspection risk, and when the vent hole is blocked by sundries, the vent hole loses the ball inspection function. In order to avoid the risk of missing detection, the vent holes of the die need to be cleaned regularly to prevent the vent holes from being blocked, and the method is complex to operate and influences the ball testing efficiency.

Disclosure of Invention

The utility model aims to solve the technical problem that, to prior art not enough, provide a ball ware is tested with bearing assembly, this ball ware structure of testing is reliable, and long service life can realize judging to bearing few ball accuracy, automation, high efficiency, improves bearing assembly efficiency, effectively stops the bearing product of few ball and flows into the back process and cause the quality accident.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a ball inspection device for bearing assembly, includes bearing supporting bench, insulating casing and equidistant setting and is in insulating casing inboard a plurality of ball units of inspecting, bearing supporting bench set up insulating casing's downside, a plurality of ball units of inspecting and the quantity and the position phase-match of the steel ball of bearing, insulating casing's upper end install first metal conducting strip, insulating casing's lower extreme install second metal conducting strip, first metal conducting strip with second metal conducting strip through signal electric wire connection, signal electric wire be connected with computer PLC, every ball unit of inspecting include metal spring and electrically conductive contact pin, metal spring's upper end with first metal conducting strip connect, metal spring's lower extreme with the upper end of contact pin connect, the lower extreme body coupling of contact pin have the contact pin head, the external diameter of contact needle head be less than the external diameter of contact needle, the lower extreme of contact needle head wear out from the downside of second metal conducting strip, contact needle head with second metal conducting strip contactless, the contact needle when flagging naturally, the lower terminal surface of contact needle with the up end contact of second metal conducting strip.

The utility model discloses ball ware is tested to contact pilotage inductance type, and its theory of operation is: in a non-working state, the contact pins naturally droop, the lower end face of each contact pin is in contact with the upper end face of the second metal conducting plate, the lower ends of the contact pins extend out of the lower side of the second metal conducting plate and correspond to the positions of the steel balls of the bearing, at the moment, the first metal conducting plate, the metal spring, the contact pins and the second metal conducting plate are connected and electrified, and the signal wire feeds back an electrified signal to the PLC; when the bearing support platform works, the bearing is placed on the bearing support platform, the insulating shell moves downwards, when the lower ends of the contact pins are in contact with the steel balls of the bearing and are jacked up by the steel balls, the lower end surfaces of the contact pins are separated from the upper end surface of the second metal conducting strip respectively, the contact pins are lifted up, all the contact pins are disconnected with the second metal conducting strip at the moment, the signal wire is powered off, the computer judges that the bearing is qualified and automatically releases the bearing, if one or more contact pins on one bearing are not lifted up, the power-on signal cannot be disconnected, and the computer judges that the bearing has few balls and automatically rejects the bearing.

The utility model discloses it is reliable to test ball ware structure, need not frequent maintenance and maintenance, and long service life can realize judging accurate, automatic, the high efficiency of few balls of bearing, improves bearing assembly efficiency, and the bearing product of effectively stopping few balls flows into the later process and causes the quality accident.

Preferably, a plurality of vertical insulating tubes are arranged between the first metal conducting strip and the second metal conducting strip at equal intervals, and each metal spring and the contact pin connected with the metal spring are vertically arranged in one insulating tube. The insulating tube plays a role in protecting and guiding the metal spring and the contact pin, can improve the reliability of the up-and-down movement of the contact pin, and ensures the ball testing effect.

Preferably, the second metal conductive sheet is provided with a plurality of first through holes matched with the plurality of contact pins, the aperture of each first through hole is larger than the outer diameter of each contact pin, and the lower end of each contact pin penetrates through one first through hole and penetrates out of the lower side of the second metal conductive sheet.

Preferably, the bearing support platform include support platform and under bracing platform, last support platform fix insulation housing's bottom, last support bench set up with a plurality of second through-holes of contact probe head looks adaptation, every the lower extreme of contact probe head from one the downside of second through-hole wear out, the under bracing platform set up be in under the last support platform, the top of under bracing platform be provided with the support ring that is used for support bearing. The upper supporting table plays a role in protecting and guiding the plurality of contact pins, and the lower supporting table plays a role in positioning the bearing for the bearing, so that the reliability of ball checking operation is further improved.

Compared with the prior art, the utility model has the advantages of as follows: the utility model discloses ball ware is tested to the contact pilotage inductance type, and its structure is reliable, need not frequent maintenance and maintenance, and long service life can realize judging bearing few ball's accuracy, automation, high efficiency, improves bearing assembly efficiency, effectively stops the bearing product of few ball and flows into the back process and cause the quality accident.

Drawings

FIG. 1 is a schematic structural diagram of a ball tester for bearing assembly in the embodiment.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The ball testing device for bearing assembly of embodiment 1, as shown in fig. 1, comprises a bearing support platform 1, an insulating housing 2 and a plurality of ball testing units arranged at equal intervals inside the insulating housing 2, the bearing support platform 1 is arranged at the lower side of the insulating housing 2, the plurality of ball testing units are matched with the number and positions of the steel balls 41 of the bearing 4, the upper end of the insulating housing 2 is provided with a first metal conducting strip 21, the lower end of the insulating housing 2 is provided with a second metal conducting strip 22, the first metal conducting strip 21 and the second metal conducting strip 22 are connected through a signal wire 23, the signal wire 23 is connected with a computer PLC (not shown in the figure), each ball testing unit comprises a metal spring 31 and a conductive contact pin 32, the upper end of the metal spring 31 is connected with the first metal conducting strip 21, the lower end of the metal spring 31 is connected with the upper end of the contact pin 32, the lower end of the contact pin 32 is integrally connected with a contact pin 33, the outer diameter of the contact pin head 33 is smaller than that of the contact pin 32, the second metal conducting strip 22 is provided with a plurality of first through holes 24 matched with the plurality of contact pin heads 33, the aperture of each first through hole 24 is larger than the outer diameter of each contact pin head 33, the lower end of each contact pin head 33 penetrates through one first through hole 24 and penetrates out of the lower side of the second metal conducting strip 22, the contact pin head 33 is not contacted with the second metal conducting strip 22, and when the contact pin 32 naturally droops, the lower end face of the contact pin 32 is contacted with the upper end face of the second metal conducting strip 22.

The ball tester for bearing assembly in example 2 differs from example 1 in that in example 2, a plurality of vertical insulating tubes 25 are provided at equal intervals between the first metal conductive plate 21 and the second metal conductive plate 22, and each metal spring 31 and the contact pin 32 connected thereto are vertically installed in one insulating tube 25.

The ball testing device for bearing assembly in embodiment 3 differs from embodiment 2 in that in embodiment 3, the bearing support table 1 includes an upper support table 11 and a lower support table 12, the upper support table 11 is fixed to the bottom end of the insulating housing 2, a plurality of second through holes 13 adapted to the plurality of contact pins 33 are formed in the upper support table 11, the lower end of each contact pin 33 protrudes from the lower side of one second through hole 13, the lower support table 12 is disposed directly below the upper support table 11, and the top end of the lower support table 12 is provided with a support ring 14 for supporting the bearing 4.

The ball tester of each embodiment is a contact pin 32 inductive ball tester, and the working principle is as follows: in a non-working state, the contact pins 32 naturally droop, the lower end face of each contact pin 32 is in contact with the upper end face of the second metal conducting strip 22, the lower ends of the contact pins 33 extend out of the lower side of the second metal conducting strip 22 and correspond to the positions of the steel balls 41 of the bearing 4, at the moment, the first metal conducting strip 21, the metal spring 31, the contact pins 32 and the second metal conducting strip 22 are connected and electrified, and the signal wire 23 feeds back an electrified signal to the computer PLC; when the bearing support platform works, after the bearing 4 is placed on the bearing support platform 1, the insulating shell 2 moves downwards, when the lower ends of the contact pins 33 are in contact with the steel balls 41 of the bearing 4 and are jacked up by the steel balls 41, the lower end surfaces of the contact pins 32 are separated from the upper end surface of the second metal conducting strip 22 respectively, the contact pins 32 are lifted up, all the contact pins 32 are disconnected with the second metal conducting strip 22 at the moment, the signal wire 23 is powered off, the bearing is judged to be qualified by a computer and automatically released, if one or more contact pins 32 on one bearing are not lifted up, the power-on signal cannot be switched off, and the computer judges that the bearing has few balls and automatically rejects the balls.

Claims

1. The utility model provides a ball inspection device for bearing assembly, its characterized in that includes bearing supporting bench, insulating casing and equidistant setting and is in insulating casing inboard a plurality of ball units of inspecting, bearing supporting bench set up insulating casing's downside, a plurality of ball units of inspecting and the quantity and the position phase-match of the steel ball of bearing, insulating casing's upper end install first metal conducting strip, insulating casing's lower extreme install second metal conducting strip, first metal conducting strip with second metal conducting strip through signal electric wire connection, signal electric wire be connected with computer PLC, every ball unit of inspecting include metal spring and electrically conductive contact pin, metal spring's upper end with first metal conducting strip connect, metal spring's lower extreme with the upper end of contact pin is connected, the lower extreme an organic whole of contact pin be connected with the contact pin head, the external diameter of contact needle head be less than the external diameter of contact needle, the lower extreme of contact needle head wear out from the downside of second metal conducting strip, contact needle head with second metal conducting strip contactless, the contact needle when flagging naturally, the lower terminal surface of contact needle with the up end contact of second metal conducting strip.

2. The ball testing device for bearing assembly as claimed in claim 1, wherein a plurality of vertical insulating tubes are provided between the first metal conductive plate and the second metal conductive plate at equal intervals, and each of the metal springs and the contact pin connected thereto are vertically installed in one of the insulating tubes.

3. The ball testing device for bearing assembly as claimed in claim 1, wherein the second metal conductive plate is formed with a plurality of first through holes adapted to the plurality of contact pins, the diameter of each first through hole is larger than the outer diameter of each contact pin, and the lower end of each contact pin penetrates through one first through hole and penetrates out from the lower side of the second metal conductive plate.

4. The ball testing device for bearing assembly according to claim 1, wherein the bearing support platform comprises an upper support platform and a lower support platform, the upper support platform is fixed at the bottom end of the insulating housing, a plurality of second through holes matched with the contact pins are formed in the upper support platform, the lower end of each contact pin penetrates out of the lower side of one of the second through holes, the lower support platform is arranged under the upper support platform, and the top end of the lower support platform is provided with a support ring for supporting the bearing.