CN209021114U - DC motor rotor cable bond bending tool - Google Patents

Abstract

The utility model discloses a bending tool for a voltage equalizing line of a DC motor rotor, which solves the problems of poor flatness and consistency existing in the bending of the existing voltage equalizing line. The bending base plate seat (1) is provided with an equalizing line embedded in a straight groove (2), and a pressure equalizing line is provided at the left end of the bending base base (1) outside the left end of the equalizing line embedded in the straight groove (2). The bending support table (12) is fastened with an upper cover plate (4) on the bending base plate seat (1), and the bending pin shaft (6) is passed through the pressure equalizing line bending pressure plate (11) and the pressure equalizing line. Between the bending pallets (12), a roller shaft (9) and a bending roller (10) are arranged in the opening of the U-shaped frame (7), and both ends of the bending pin shaft (6) are connected to the U-shaped frame (7). 7) The opening is hinged, and the bending rollers are tangent to the arc side of the left end of the pressure-equalizing line bending pallet and the arc side of the left end of the pressure-equalizing line bending platen respectively. The bending consistency of the pressure equalizing line is improved, and the bending flatness is guaranteed.

Description

DC motor rotor equalizing line bending tool

technical field

The invention relates to a bending tool for a voltage equalizing line of a DC motor rotor, in particular to a bending tool for a voltage equalizing line of a DC motor rotor and a bending method.

Background technique

The DC motor rotor (often referred to as the armature) consists of an armature core, an armature winding, a voltage equalizer winding and a commutator. Among them, the voltage-equalizing line windings are placed one by one and densely arranged to the lower side of the armature winding end by hundreds of voltage-equalizing lines, which are in close contact with the armature coil on the upper side, and the leads of the two extend into the commutator lift. Inside the high piece, the armature is formed after welding. It is precisely because of the feature that the equalizing line is covered under the armature winding, when the equalizing line is bent and formed, the requirements for its shape and size are more stringent. Once the equalizing line fails, it needs to be disassembled for rework. There are so many parts that maintenance is difficult, so it is especially critical to ensure the shape and size of the equalizing line when it is bent into a U shape. The voltage equalizing line is an open forming coil made of a single magnet wire through a specific tooling process. : The specification of some equalizing lines is 2×6.5, that is, the cross-section of the line, the width is 6.5 mm, and its height is only 2 mm. Before and after bending into a U shape, it is necessary to maintain the flat top surface of the copper bar before bending and After bending, the flat top surface of the copper bar is always on the same plane. During the bending process, the deformation of the upper end and the lower end of the bent part is very different. Using conventional bending equipment, the method of top U bending cannot achieve the process. Requirements: Generally, the conventional manual bending method is used, the straight edge is clamped on the table, and the split manual bending method is used for bending, but there are the following problems in this production method: 1) The curved arc part is bent The deformation is uneven, and the consistency does not meet the process requirements; 2) The curved part is seriously overturned, which affects its flatness; 3) The bending work efficiency is low.

SUMMARY OF THE INVENTION

The invention provides a bending tool and a bending method for a DC motor rotor equalizing line, and solves the technical problems of poor flatness and consistency in the existing bending of equalizing lines.

The present invention solves the above technical problems through the following technical solutions:

A DC motor rotor pressure equalizing line bending tool, comprising a bending base plate seat, an upper cover plate and a U-shaped frame, a U-shaped frame rotating handle is fixedly connected to the U-shaped frame, and a pressure equalizing device is arranged on the bending base plate base The line is embedded in the in-line groove, the pre-bending pressure line is arranged in the equal pressure line embedded in the in-line groove, and the left end of the bending base plate seat outside the left end of the line in the in-line groove is provided with a pressure line bending bracket The left end of the upper cover plate is provided with a pressure-equalizing line bending pressure plate, a bending pin shaft is arranged on the pressure-equalizing line bending platform, an upper cover plate is buckled on the bending base plate, and the bending pin shaft passes through Connected between the pressure-equalizing line bending platen and the pressure-equalizing line bending support, a roller shaft is arranged in the opening of the U-shaped frame, a bending roller is arranged on the roller shaft, and both ends of the bending pin are connected to the U-shaped frame. The openings of the shape frame are hinged together, and the bending rollers are tangent to the arc side of the left end of the pressure-equalizing line bending pallet and the arc side of the left end of the pressure-equalizing line bending plate; Between the bending pressure plates of the pressure equalizing line, and between the bending pin shaft and the bending roller, a pre-bending pressure equalizing line passes through the formed passage opening.

The upper cover plate is screwed together with the bent bottom plate seat through fixing bolts.

A method for bending a voltage equalizing line of a DC motor rotor, comprising the following steps:

The first step is to set the pressure-equalizing line embedded in the in-line groove on the bending base plate seat, and set the pressure-equalizing line bending bracket at the left end of the bending plate seat outside the left end of the in-line groove, and fold the equal-pressure line at the left end of the bending plate base. The bending pin shaft penetration hole is set on the bending support table, and the width of the pressure equalizing line on the left side of the bending pin shaft penetration hole is equal to the width of the pre-bending pressure equalizing line; at the left end of the upper cover plate Set the pressure equalizing line bending pressure plate, set the perforation on the bending pin shaft on the bending pressure plate of the pressure equalizing line, and make the width of the pressure equalizing line bending plate on the left side of the perforation on the bending pin shaft equal to the pre-bending pressure equalizing line The width of the U-shaped frame is connected with the U-shaped frame rotating handle; a roller shaft is arranged in the opening of the U-shaped frame, and a bending roller is arranged on the roller shaft;

The second step is to put the pre-bending pressure line into the groove of the line, and connect the bending pin shaft between the pressure line bending plate and the pressure line bending bracket, and then Both ends of the bending pin shaft are hinged with the opening of the U-shaped frame, so that the U-shaped frame can rotate around the bending pin shaft. During the rotation of the U-shaped frame, the bending rollers and the pressure equalizing line are respectively bent The arc side of the left end of the table and the arc side of the left end of the pressure equalizing line bending plate are tangent;

The third step is to form a pressure-equalizing line bending passage between the pressure-equalizing line bending platform and the pressure-equalizing line bending platen, as well as between the bending pin shaft and the bending roller, so that the pre-bending pressure is equalized. The line passes through the mouth through the bend of the equalizing line;

The fourth step is to rotate the U-shaped frame counterclockwise by holding the rotating handle of the U-shaped frame, and the bending roller acts on the outer side of the pre-bending equalizing line to bend the pre-bending equalizing line into a U shape;

Step 5: Pull out the bending pin, separate the U-shaped frame from the bending base plate and the upper cover, remove the fixing bolts, separate the upper cover and the bending base, and take out the pre-bending after bending. Press the line.

The tooling of the invention has simple structure and easy technological operation, improves the bending consistency of the pressure equalizing line, and ensures the bending flatness.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Fig. 2 is the working state diagram of the present invention when bending the pressure equalizing line in the top view direction;

FIG. 3 is a schematic structural diagram of the bent bottom plate seat 1 of the present invention in a top view direction;

FIG. 4 is a schematic structural diagram of the upper cover plate 4 of the present invention in a plan view direction.

Detailed ways

The present invention is described in detail below in conjunction with the accompanying drawings:

A DC motor rotor pressure equalizing line bending tool, comprising a bending base plate seat 1, an upper cover plate 4 and a U-shaped frame 7, a U-shaped frame rotating handle 8 is fixedly connected to the U-shaped frame 7, and a U-shaped frame rotating handle 8 is fixedly connected to the bending base plate seat. 1 is provided with an equalizing line embedded in the in-line groove 2, a pre-bending equalizing line 3 is arranged in the equalizing line embedded in the in-line groove 2, and a bending bottom plate seat 1 outside the left end of the in-line groove 2 is embedded in the equalizing line The left end of the upper cover plate 4 is provided with an equalizing line bending pallet 12, and the left end of the upper cover plate 4 is provided with an equalizing line bending pressing plate 11, and a bending pin 6 is provided on the equalizing line bending pallet 12. The upper cover plate 4 is buckled on the bent bottom plate base 1 , the bending pin shaft 6 is connected between the pressure equalization line bending platen 11 and the equalization line bending bracket 12 , and the opening of the U-shaped frame 7 is provided with a The roller shaft 9 is provided with a bending roller 10 on the roller shaft 9, the two ends of the bending pin 6 are hinged with the opening of the U-shaped frame 7, and the bending roller 10 is respectively connected with the equalizing line bending platform 12 The arc side of the left end and the left end arc side of the pressure-equalizing line bending platen 11 are tangent together; Between the rollers 10, a pre-bent pressure equalizing line 3 passes through the formed passage opening.

The upper cover plate 4 is screwed together with the bent bottom plate base 1 through fixing bolts 5 .

A method for bending a voltage equalizing line of a DC motor rotor, comprising the following steps:

The first step is to set the pressure-equalizing line to be embedded in the in-line groove 2 on the bending base plate base 1, and set the pressure-equalizing line bending bracket 12 at the left end of the bending base plate base 1 outside the left end of the in-line groove 2. A bending pin shaft 6 penetration hole is arranged on the pressure equalizing line bending pallet 12, and the width of the pressure equalizing line bending pallet 12 on the left side of the bending pin shaft 6 penetration hole is equal to the pre-bending pressure equalizing line The width of 3; the left end of the upper cover plate 4 is provided with a pressure-equalizing line bending platen 11, and a perforation on the bending pin shaft 6 is arranged on the pressure-equalizing line bending platen 11, and the perforation on the left side of the bending pin shaft 6 is made. The width of the pressure-equalizing line bending platen 11 is equal to the width of the pre-bending pressure-equalizing line 3; a roller shaft 9 is arranged in the opening of the U-shaped frame 7 connected with the U-shaped frame rotating handle 8, and a folding Bending roller 10;

The second step is to put the pre-bending pressure equalizing line 3 into the pressure equalizing line embedded in the slot 2, and connect the bending pin 6 to the pressure equalizing line bending plate 11 and the pressure equalizing line bending platform 12. Between the two ends of the bending pin 6 and the opening of the U-shaped frame 7 are hinged together, so that the U-shaped frame 7 can rotate around the bending pin 6, and the U-shaped frame 7 rotates. The bending rollers 10 are respectively tangent to the arc side surface of the left end of the pressure-equalizing line bending pallet 12 and the arc side surface of the left end of the pressure-equalizing line bending platen 11;

In the third step, between the pressure-equalizing line bending pallet 12 and the pressure-equalizing line bending platen 11, and between the bending pin shaft 6 and the bending roller 10, a pressure-equalizing line bending passage is formed, so that the pre- The bending pressure equalization line 3 passes through the bending passage of the pressure equalization line;

The fourth step, rotate the U-shaped frame 7 counterclockwise by holding the U-shaped frame rotating handle 8, and the bending roller 10 acts on the outer side of the pre-bending pressure-equalizing line 3 to bend the pre-bending pressure-equalizing line 3 into a U shape; During the whole bending process, the pre-bending pressure line 3 is limited in the upper and lower spaces between the bending pallet 12 and the pressure plate 11 by the pressure line, during the bending stress concentration change process During the bending process, the deformation of the pre-bending equalizing line 3 is limited by the two upper and lower plates, thereby avoiding the occurrence of warping of the curved part; at the same time, during the bending process, the bending roller 10 is always in the same direction as the equalizing plate during the rolling process. The arc side surface of the left end of the pressure line bending pallet 12 and the left end arc side surface of the pressure line bending platen 11 are tangent, so that the deformation in the left and right horizontal directions of the U-shaped bending deformation of the pre-bending pressure line 3 is limited. , to ensure the consistency of the radian of the U-shaped bending deformation;

The fifth step, pull out the bending pin 6, separate the U-shaped frame 7 from the bending bottom plate base 1 and the upper cover plate 4, remove the fixing bolts 5, separate the upper cover plate 4 from the bending bottom plate base 1, and take out the bending plate. The pre-bending equalizing line 3 after bending; during the bending process, because the U-shaped arc of the pre-bending equalizing line 3 is very small, it is often difficult to take out the mold after bending. The detachable split design solves the problem of difficulty in taking out the mold after bending, and speeds up the efficiency of on-site production.

Claims (2)

1. a kind of DC motor rotor cable bond bending tool, including bending bottom block (1), upper cover plate (4) and U-frame frame (7), U-frame frame rotating handle (8) is fixedly connected on U-frame frame (7), which is characterized in that be provided on bending bottom block (1) Cable bond is embedded in linear type slot (2), the cable bond that pre-bends (3) is provided in cable bond insertion linear type slot (2), in cable bond The left end of bending bottom block (1) on the outside of insertion linear type slot (2) left end is provided with cable bond bending saddle (12), in upper cover plate (4) left end is provided with cable bond bending pressing plate (11), and bending pin shaft (6) are provided on cable bond bending saddle (12), It is snapped on bending bottom block (1) upper cover plate (4), bending pin shaft (6) is worn to connect to be rolled in cable bond bending pressing plate (11) and cable bond Between curved saddle (12), it is provided with roller shaft (9) in the opening of U-frame frame (7), bending rolling is provided on roller shaft (9) Take turns (10), the both ends of bending pin shaft (6) and the opening of U-frame frame (7) are hinged, bending idler wheel (10) respectively with press Line bending saddle (12) left end circular arc side and cable bond bending pressing plate (11) left end circular arc side are tangent together；In cable bond Between bending saddle (12) and cable bond bending pressing plate (11) and between bending pin shaft (6) and bending idler wheel (10), it is formed by Cable bond (3) are pre-bended by passing through in mouth.

2. a kind of DC motor rotor cable bond bending tool according to claim 1, which is characterized in that upper cover plate (4) It is to be screwed together by fixing bolt (5) and bending bottom block (1).