CN-224204946-U - Tool for solving problem of matching of bearing and underframe with drilling of positioning pin holes

CN224204946UCN 224204946 UCN224204946 UCN 224204946UCN-224204946-U

Abstract

The utility model discloses a tool for solving the problem of positioning pin holes of a bearing and an underframe matched with a drill, which comprises a magnetic drill for punching positioning pins of a motor underframe and the bearing, an adsorption cushion block and a fixing tool, wherein the adsorption cushion block is arranged on the motor underframe and positioned at the side part of the bearing, a magnetic sucker of the magnetic drill is adsorbed on the upper surface of the adsorption cushion block, so that a drill bit is opposite to the center position for punching the positioning pins, at least one limiting windowing is arranged at the side part of the adsorption cushion block, and the fixing tool is pressed on a bottom frame for limiting windowing, so that the adsorption cushion block is fixed on the motor underframe. The utility model provides a tool for solving the problem of matching a bearing with a chassis to drill a positioning pin hole, which can conveniently and efficiently realize matching the bearing with the chassis to drill the positioning pin hole.

Inventors

WANG YA
NI HAO

Assignees

上海电气集团上海电机厂有限公司

Dates

Publication Date: 20260505
Application Date: 20250407

Claims (4)

1. The tool for solving the problem of positioning pin holes of the bearing and the underframe in a matched manner comprises a magnetic drill for punching positioning pins of the motor underframe and the bearing, and is characterized by further comprising an adsorption cushion block and a fixing tool; The adsorption cushion block is arranged on the motor underframe and positioned at the side part of the bearing, the magnetic sucking disc of the magnetic drill is adsorbed on the upper surface of the adsorption cushion block, so that the drill bit is opposite to the center position for punching the locating pin, at least one limiting windowing is arranged at the side part of the adsorption cushion block, and the fixing tool is pressed on the underframe for limiting windowing, so that the adsorption cushion block is fixed on the motor underframe.
2. The fixture for solving the problem of the positioning pin hole of the bearing and the underframe matched drilling of the invention according to claim 1, wherein the fixed fixture comprises a supporting cushion block, a U-shaped pressing plate, a fixture screw and a test platform; The motor underframe is arranged on the test platform, the supporting cushion block is arranged on the test platform and supports the U-shaped pressing plate, the U-shaped pressing plate is pressed on the underframe of the limiting windowing, the adsorption cushion block is fixed on the motor underframe, the tooling screw rod penetrates through the middle of the U-shaped pressing plate, the bottom of the tooling screw rod is connected with the test platform, and the tooling screw rod fixes the U-shaped pressing plate through the pressing plate and generates downward pressure.
3. The fixture for solving the problem of the positioning pin hole of the bearing and the chassis drilling according to claim 2, wherein the fixing fixture further comprises a T-shaped nut, the test platform is provided with a T-shaped groove, the T-shaped nut is arranged in the T-shaped groove, and the bottom of the fixture screw is connected with the T-shaped nut.
4. The tooling for solving the problem of drilling the positioning pin holes between the bearing and the underframe according to claim 2 is characterized in that the height of the supporting cushion block is equal to the height of the motor underframe plus the height of the bottom frame for limiting and windowing, so that the U-shaped pressing plate is horizontally arranged, and the distance between the supporting cushion block and the motor underframe is matched with the length of the U-shaped pressing plate.

Description

Tool for solving problem of matching of bearing and underframe with drilling of positioning pin holes Technical Field The utility model relates to the field of motor assembly, in particular to a tool for solving the problem of matching a bearing with a chassis to drill a positioning pin hole. Background For a large motor with the stator and the rotor penetrating and installed and the rotor 1 supported by the seat type bearing, the bearing 4 and the stator 2 fall on the underframe 3, and the motor structure is shown in figure 1. After the total assembly test is finished, the technical requirement for matching and beating the positioning pin is arranged between the bearing 4 and the underframe 3. The positioning pin holes of the product bearing and the underframe are drilled by the radial drilling machine in the past, and the process is to integrally hoist the motor to a radial drilling machine station when the motor is integrally transported (namely, the stator, the rotor, the bearing and the underframe are assembled into a whole), and the drilling positioning pin matching process can be realized after the stator and the rotor are hoisted out due to the fact that the space of the radial drilling machine station is limited when the large-sized motor with heavy tonnage or large size of the motor is encountered. And after the positioning pin is matched with the drill, the disassembled motor part is reassembled and formed. The number of procedures is increased only by drilling the positioning pin holes, time and labor are wasted, the acoustic channel is complained by the operating master, the pressure is felt by the technical staff, and in addition, the repeated lifting of the stator and rotor through assembly also increases the process risk. One way to solve the above problems is to develop a way to replace the radial drilling machine with a magnetic drill to drill the locating pin holes. The mode can meet the condition that the center of the magnetic drill bit and the bottom hole of the positioning pin hole are not positioned on the same central line, and adjustment is needed. However, due to the size of the magnetic drill chuck, even if the magnetic drill chuck is tightly attached to the bearing in a small fixed space, the drill bit is difficult to adjust to the center line. It is highly desirable to find a method for solving the problem that the operation cannot be performed when the magnetic drill is used for matching the drilling bearing and the positioning pin hole of the underframe because the space position is limited. Disclosure of utility model The utility model aims to overcome the defects of the prior art, and provides a tool for solving the problem that a bearing and an underframe are matched with a positioning pin hole, so that reliable and efficient assembly of a motor can be realized. The tool for solving the problem of positioning pin holes of the bearing and the underframe is provided with a magnetic drill for punching positioning pins of the motor underframe and the bearing, and is characterized by further comprising an adsorption cushion block and a fixing tool; The adsorption cushion block is arranged on the motor underframe and positioned at the side part of the bearing, the magnetic sucking disc of the magnetic drill is adsorbed on the upper surface of the adsorption cushion block, so that the drill bit is opposite to the center position for punching the locating pin, at least one limiting windowing is arranged at the side part of the adsorption cushion block, and the fixing tool is pressed on the underframe for limiting windowing, so that the adsorption cushion block is fixed on the motor underframe. Further, the fixed tool comprises a supporting cushion block, a U-shaped pressing plate, a tool screw and a test platform; The motor bottom frame is arranged on the test platform; The supporting cushion block is arranged on the test platform and supports the U-shaped pressing plate, the U-shaped pressing plate is pressed on the bottom frame of the limiting windowing, the adsorption cushion block is fixed on the motor underframe, the tooling screw rod penetrates through the middle of the U-shaped pressing plate, the bottom of the tooling screw rod is connected with the test platform, and the tooling screw rod fixes the U-shaped pressing plate through the pressing plate and generates downward pressure. Further, a T-shaped groove is formed in the test platform, a T-shaped nut is arranged in the T-shaped groove, and the bottom of the tool screw is connected with the T-shaped nut. Further, the height of the supporting cushion block is equal to the height of the motor underframe plus the height of the bottom frame for limiting and windowing, so that the U-shaped pressing plate is horizontally arranged, and the distance between the supporting cushion block and the motor underframe is matched with the length of the U-shaped pressing plate. According to the tooling for solving the problem of matching