JB/T 7085.2-1993 Guidelines for stator and rotor winding process of series-excited motors for power tools Part 2: Rotor symmetric winding process
Some standard content:
Mechanical Industry Standard of the People's Republic of China
Guidelines for Stator and Rotor Winding Process of Series-excited Motors for Electric Tools Part 2 Symmetrical Winding Process of Rotors
1 Subject Content and Scope of Application
B/T7085.2-1993
This standard specifies the technical requirements, process equipment, process methods and quality inspection for the symmetrical winding process of the rotor of the series-excited motor for electric tools using an automatic (semi-automatic) double-arm winding machine. This standard applies to the symmetrical winding process of the rotor of the series-excited motor for electric tools. .
2 Referenced Standards
GB3883.1 Safety of Handheld Electric Tools Part 1 GB2900.1 Electrical Terminology Basic Terminology GB2900.25 Electrical Terminology Motorwww.bzxz.net
3 Terminology
The terminology of this standard complies with the provisions of GB2900.1 and GB2900.25. The following terminology is only applicable to this standard. 3.1 Rotor symmetrical winding
A new process for rotor winding. During winding, the rotor does not move. Two winding arms with opposite rotation directions simultaneously wind the coils in two pairs of slots symmetrical to the axis. After winding the two pairs of slots, they turn to another pair in sequence and wind again until all the slots are wound. During the entire winding process, the rotor only needs to rotate 180°. Rotor symmetrical winding is also called H-type winding. 3.2 Rotor double-arm winding machine
A rotor winding device with two winding arms that can simultaneously wind two pairs of slots in one rotation. 3.3 Winding arm
In a rotor winding machine, a component that rotates with the shaft and guides the wire to be wound into the rotor core slot. 3.4 Tension device
In a rotor winding machine, a mechanism for controlling tension. 3.5 Sliding wire template
In rotor winding, a component that allows the wire to move along a certain trajectory and slide into the rotor core slot. 3.6 Rotor to be wound
The rotor core with insulating end plates and slot insulation and commutator pressed in. 4 Equipment
4.1 General requirements
The rotor double-arm winding machine must meet the corresponding standards. 4.2 Equipment integrity
The equipment used for rotor symmetrical winding should be a complete rotor double-arm winding machine with winding mechanism, tension device, counting device and sliding wire template.
4.3 Functional requirements
Approved by the Ministry of Machinery Industry in 1993--10-08
Implementation in 1994-01-01
JB/T7085.2-1993
The winding speed of the rotor double-arm winding machine should be continuously adjustable, capable of slow starting and slow stopping, and have a braking function controlled by a counting device. 4.4 Classification
The rotor double-arm winding machine is divided into automatic winding machine and semi-automatic winding machine. The automatic winding machine has the functions of automatic rotor core placement, automatic winding, counting, parking, hook (or wire head) unloading, etc. Semi-automatic winding machines have two types of high and low automation. Semi-automatic winding machines with high automation are automatic except for manual loading and unloading. Semi-automatic winding machines with low automation are manual except for automatic winding, counting and parking. 4.5 Tension device
The wire tension controlled by the tension device should be adjustable, and the controlled tension range should be able to include the tension required for winding. 4.6 Sliding wire template
The shape of the working surface of the sliding wire template should ensure the smooth sliding of the wire and the required shape of the coil, and the maximum allowable value of its surface roughness parameter Ra is 0.2μm.
5 Material preparation
5.1 Enameled wire and slot insulation materials must meet the corresponding standards and undergo acceptance inspections according to the test methods specified in the corresponding standards. 5.2 The rotor core should meet the requirements of the drawing. 5.3 The size and placement of slot insulation shall comply with the requirements of the drawings and meet the requirements of Article 26.1 of GB3883.1. 5.4 The model and wire gauge of the enameled wire shall comply with the requirements of the drawings. 5.5 The enameled wire shall be wound on a pagoda-shaped wire mirror, which shall be placed vertically in a protective barrel. A protective cover shaped like an inverted funnel shall be placed above the barrel to prevent the enameled wire from being scattered and entangled by collision. 5.6 The insulating end plate shall be smooth and flat, without deflection, and shall cooperate well with the iron core. 6 Winding preparation
6.1 Before winding, check whether the rotor to be wound meets the winding requirements. 6.2 Assembly fixture
Assemble the corresponding fixture according to the specifications of the rotor core. 6.3 Introducing enameled wire
Use special tools to pass the two enameled wires that meet the requirements of Articles 5.1 and 5.4 from the tail of the two shafts, lead them out from the two winding arm wire wheels, and fix them on the corresponding fixtures.
6.4 Adjust the tension
Adjust the tension to an appropriate degree, so that the wire is not stretched excessively or even broken, nor is it too loose to affect the coil forming or even loose outside the slot. The tension can be determined in advance by testing. Different specifications of wires should be subjected to different tensions. 6.5 Input program and preset count value
If the winding machine needs to input a program, the pre-programmed corresponding program and turn value, slot value (and angle value for hook-shaped commutator) should be entered according to the instruction manual. If the winding machine only needs to set the turn value, set the turn value according to the instruction manual. 6.6 Trial winding
After the above preparations, 3 to 5 rotors should be trial wound and then inspected. Only after meeting the requirements can the winding be formally carried out. The winding operation method shall be carried out in accordance with the provisions of Chapter 7.
·7 Winding
7.1 Winding of hook-shaped commutator rotor
7.1.1 Wire hooking method
JB/T7085.2-1993
For the wire hooking method of the rotor of the series-excited motor for electric tools, the "surrounding α type" should be adopted, that is, the coil wire end is wound 360° or 180° on the shaft and then hung on the hook of the commutator in an α shape, as shown in Figures 1 and 2. Mm
Note: In order to make the figure clear, only half of the beginning part of the winding connection is shown in the figure, and the rest can be deduced by analogy. 7.1.2 Automatic winding
Put the rotor to be wound into the input end of the conveyor belt of the automatic rotor winding machine, press the "Run" button, and the winding machine will automatically load the material, wind the wire, hook the wire, cut the wire, unload the material, and the automatic winding machine will repeat the process of winding, hooking, cutting the wire, unloading, and winding the wire. 7.1.3 Semi-automatic winding machine
Put the winding machine in a waiting state, put the rotor to be wound into the chuck, press the "Run" button, and the winding machine will automatically wind, hook, and stop. Remove the wound rotor from the chuck, fix the wire ends, cut the wires, and put the rotor in the work station. b. Put the rotor to be wound into the chuck, wind the two wire ends on the corresponding hooks (starting hooks) of the commutator, push up the sleeve to cover the commutator, tighten the clamp with the sliding wire template, press the "Run" button, count the winding, and stop when the number of turns is reached. Then, slightly loosen the clamp and turn the rotor 360° (as shown in the figure). 1) or 180° (as per Figure 2) The wire is hung on the second hook in an α shape. At this point, the winding of the first pair of coils is completed. Tighten the clamp and wind the second pair of coils according to the above operation. For a rotor with one slot and two pieces (for electric tools, one slot and two pieces are preferred), when winding the third pair of coils, rotate one slot in the direction required by the drawing and continue winding. Follow this operation until it moves 180° to complete the winding. At this point, hang the last pair of wire ends on the starting hook, cut the enameled wire and remove the rotor. The winding of one rotor is completed and the rotor is placed in the work station tool. 7.2 Winding of slot-shaped commutator rotor
7.2.1 Winding and commutation Commutator connection mode
For the rotor of the series-excited motor for electric tools, the winding system adopts a single-layer winding. When a slot-shaped commutator is used, the winding wire end and the commutator connection system are that the end of the first coil is connected in parallel with the beginning of the second coil, forming a wire end and embedding it in the commutator segment corresponding to the rotor slot where the beginning is located, and so on, as shown in Figure 3.
Q0252222442344628.60
JB/T7085.2-1993
Note: To make the figure clear, only half of the beginning part of the winding connection is shown in the figure, and the rest can be deduced by analogy. 7.2. 2 Automatic winding
Put the rotor to be wound into the input end of the conveyor belt of the automatic winding machine, press the "Run" button, and the winding machine will automatically load, wind, insert the wire head, cut the wire, unload the material, and the automatic winding machine will wind the wire repeatedly. 7.2.3 Semi-automatic winding
8. Put the winding machine in a waiting state, put the rotor to be wound into the chuck, press the "Run" button, and the winding machine will automatically wind and form the wire head. After stopping, remove the wound rotor from the chuck, fix the wire head and cut the wire. The winding of the rotor is completed, and the rotor is placed in the work station tool;
b.Put the rotor to be wound into the chuck, wind the two wire ends on the process hook respectively, close the clamp equipped with the sliding wire template, press the "Run" button, and the winding machine will start winding. After winding a pair of coils, stop the machine, wind the wire on the process hook again, and then wind the second pair of coils. For a rotor with one slot and two pieces, when winding the third coil, it should be rotated one slot in the direction required by the drawing to continue winding. Follow this operation until all slots are wound, cut the enameled wire and remove the rotor. In this way, the winding of a rotor is completed, and finally the rotor is placed in the work station. 8 Quality disk inspection
8.1 Number of inspections
To ensure the quality of the rotor winding, the rotor should be inspected twice, once after the coil wire ends are welded to the commutator, and once after dripping the paint.
8.2 Inspection plan
Use the rotor comprehensive tester for automatic inspection: measure DC resistance, conduct AC withstand voltage test and impulse voltage test, and implement a.
Full inspection;
Sub-item inspection: use the armature tester to detect short circuit, open circuit, wrong connection and withstand voltage test, full inspection, use the turn-to-turn tester to conduct impulse voltage test, full inspection.
Choose one of the inspection plans.
Additional instructions:
This standard is proposed and managed by the National Electric Tool Standardization Technical Committee. This standard is drafted by the Shanghai Electric Tool Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Huang Zhiqiang and Li Jun. 53
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