Motor rotor core laminating tool
The motor rotor core stacking fixture, composed of a dummy shaft, key, screw, washer ring, and pressure plate, solves the problems of high-temperature burns, measurement errors, and high costs in traditional processes, achieving efficient and safe cold stacking, improving product quality and reducing costs.
Patent Information
- Application Number
- CN202422796457.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-18
- Publication Date
- 2025-10-21
- Estimated Expiration
- 2034-11-18
AI Technical Summary
Traditional motor rotor core lamination processes suffer from problems such as high-temperature burns to workers, large measurement errors, lamination deformation, and high costs.
A motor rotor core stacking fixture consisting of a dummy shaft, key, screw, washer, and pressure plate is used to achieve cold stacking through clearance fit and nut adjustment. Combined with hydraulic press for tightening and measurement, it ensures that the laminations do not deform.
It improved the efficiency of stacking, reduced the labor intensity and risk of burns for workers, ensured product quality, and reduced costs.
Smart Images
Figure CN223462887U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to motor manufacturing process equipment technical field, concretely relates to motor rotor core punching piece's press fit with frock. BACKGROUND
[0002] As the motor of electromagnetic machine, the core assembled and press fit by silicon steel sheet, i.e. punching piece, is the key component in the motor structure, in the motor rotor core assembly field, the main body of the core is press fit by a piece of circular punching piece, when the rotor punching piece of traditional process is press fit, the rotating shaft needs to be first erected and fixed, the pressing plate and end plate are assembled according to the drawing, the punching piece is heated and kept in the oven to the required temperature, the punching piece is hot mounted on the rotating shaft by artificial wearing gloves one by one, and when the height of the punching piece is one sixth of the requirement of the drawing, the rotor core needs to be first hoisted to the oil press, then pressure is applied to compress the punching piece, the height of the punching piece is measured constantly, the remaining high-temperature punching piece is hot mounted on the rotating shaft gradually until the oil press is compressed to meet the size requirement of the drawing.
[0003] The defects of the above traditional process technology are:
[0004] 1, the temperature of the punching piece heated by the oven is high, and the worker is easy to scald the palm when hot mounting the punching piece on the rotating shaft.
[0005] 2, when the punching piece is compressed by the oil press, the measurement error is easy to cause due to the high temperature.
[0006] 3, the punching piece and the rotating shaft are interference fit, the hot-mounted punching piece needs to be compressed in time, and the delay is easy to cause the punching piece and the rotating shaft to be locked, and if the pressure is too large in the compression process, the punching piece is deformed, which affects the product quality.
[0007] 4, the punching piece needs to be heated and kept in the oven for more than several hours before press fit, which increases the use frequency and cost of the oven. INVENTION CONTENTS
[0008] According to the above background technology, the utility model provides a motor rotor core press fit frock, which can realize the cold-state assembly of the rotor core punching piece, effectively improve the quality of the rotor core press fit, especially improve the accurate press fit of the rotor core size, reduce the labor intensity of workers, ensure the operation safety, and reduce the manufacturing cost.
[0009] The technical scheme of the utility model is:
[0010] The motor rotor core lamination tooling is composed of a dummy shaft, a key, four screw rods, two gaskets and two pressing plates, the dummy shaft is made by imitating an actual rotor shaft, the key is embedded on the surface of the dummy shaft, the number of the screw rods is four, the number of the gaskets and the pressing plates is two respectively, the gaskets are arranged on both sides of the rotor core, the pressing plates are arranged outside the gaskets, the screw rods are fastened through the pressing plates, and the pressing plates and the gaskets support and fix the punched sheets after the punching sheets are laminated.
[0011] The gap fit is formed between the dummy shaft and the punched sheet.
[0012] The shaft head of the dummy shaft is provided with a threaded hole, and a bolt can be screwed into the threaded hole for hoisting and overturning in use.
[0013] The end surface of the pressing plate is provided with two threaded holes for hoisting and overturning of the rotor core in assembly.
[0014] The motor rotor core lamination tooling is composed of a dummy shaft, a key, four screw rods, two gaskets and two pressing plates, the dummy shaft is made by imitating an actual rotor shaft, the key is embedded on the surface of the dummy shaft, the number of the screw rods is four, the number of the gaskets and the pressing plates is two respectively, the gaskets are arranged on both sides of the rotor core, the pressing plates are arranged outside the gaskets, the screw rods are fastened through the pressing plates, and the pressing plates and the gaskets support and fix the punched sheets after the punching sheets are laminated.
[0015] 1. The efficiency of the rotor punched sheet lamination is improved, the process of repeatedly walking and taking punched sheets by workers is cancelled, the waste of repeatedly walking time is reduced, and the operation efficiency is improved.
[0016] 2. The punched sheets are laminated in a cold state, which is convenient for operation, reduces cost expenditure, and reduces the risk of employee scalding due to high temperature.
[0017] 3. The punched sheets can be pressed by an oil press at any time, and the height size of the laminated punched sheets can be measured, the measurement error caused by punched sheet deformation due to temperature change is avoided, and the product quality is guaranteed. BRIEF DESCRIPTION OF DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the motor rotor core lamination tooling.
[0019] Figure 2 It is a schematic diagram of the structure of the dummy shaft of the motor rotor core lamination tooling.
[0020] Figure 3 It is a schematic diagram of the structure of the pressing plate of the motor rotor core lamination tooling.
[0021] Figure 4 It is a schematic diagram of the structure of the gasket of the motor rotor core lamination tooling.
[0022] Figure 1 1. Dummy shaft, 2. Key, 3. Screw rod, 4. Gasket, 5. Pressing plate. DETAILED DESCRIPTION
[0023] The following will be described with reference to the accompanying drawings. Figure 1 ,2 , 3, and 4 describe the embodiment in detail.
[0024] The rotor core product of the motor is made by stacking and fixing the punched sheets, and the shaft is inserted into the middle, thereby becoming a rotor core of a motor. The stacking of the rotor core is a key process in the manufacture of the rotor core of the motor, and the stacking tool is very important. As shown in the accompanying drawings, the stacking tool of the rotor core of the motor of the embodiment is composed of a dummy shaft 1, a key 2, four screw rods 3, two grommets 4, and two pressing plates 5. The dummy shaft 1 is made by imitating the actual rotor shaft size of the motor product to be manufactured, but the diameter of the dummy shaft 1 is slightly smaller than the diameter of the actual rotor shaft, so that the dummy shaft 1 is in clearance fit with the punched sheets, instead of interference fit between the actual rotor shaft and the punched sheets. The clearance fit facilitates the punched sheets to be sleeved on the shaft at room temperature. The key 2 is embedded in the surface of the dummy shaft 1 (as shown in the accompanying drawings), which ensures the alignment of the punched sheets under the cooperation of the positioning rod. The number of the screw rods 3 is four, and the number of the grommets 4 and the pressing plates 5 is two respectively. Figure 1 Figure 1 2 As shown in the accompanying drawings, the key 2 is embedded in the surface of the dummy shaft 1 (as shown in the accompanying drawings), which ensures the alignment of the punched sheets under the cooperation of the positioning rod. The number of the screw rods 3 is four, and the number of the grommets 4 and the pressing plates 5 is two respectively.
[0025] The grommets 4 are added to the two sides of the rotor core punched sheets, and the pressing plates 5 are outside the grommets 4. The screw rods 3 are fastened through the four round holes outside the pressing plates 5 (as shown in the accompanying drawings). The pressing plates 5 and the grommets 4 ensure that the punched sheets are supported and fixed after being stacked, so as to prevent the outer circle of the punched sheets from being deformed by external force during the pressing process. According to the different stacking heights of the core punched sheets, the nuts on the screw rods can be adjusted, thereby ensuring the needs of cores with different heights. Figure 1 3 The structure of the dummy shaft 1 is shown in the accompanying drawings. The shaft head has a threaded hole, into which a bolt can be screwed, which is used for lifting and overturning in use.
[0026] The structure of the pressing plate 5 is shown in the accompanying drawings. The end face has two threaded holes, which are used for lifting and overturning of the core during assembly. Figure 2 The working principle of the stacking of the rotor core of the motor of the embodiment is as follows. In use, the key 2 is installed on the dummy shaft 1 and is fixed vertically. The pressing plate 5 is assembled on one side of the shaft. The punched sheets are sleeved on the dummy shaft 1 at room temperature, and are stacked. During the stacking process, the alignment of the punched sheets is corrected by the cooperation of the rotor positioning rod and the key 2. When the stacking height approaches the required height, the punched sheets are pressed by an oil press, and the number of the punched sheets is increased for pressing until the required height is reached. During the pressing process, the grommets 4 are needed between the punched sheets and the pressing plates 5 to support the punched sheets and ensure that the punched sheets are not deformed during the pressing process. After pressing, the two pressing plates 5 are fixed by the screw rods to ensure that the size of the core is consistent. Then, the dummy shaft 1 is withdrawn, and the core as a whole is put into a heating box for heating. Finally, the actual rotor shaft is sleeved.
[0027] Figure 3
[0028]
[0029] Compared with the traditional hot jacket scheme, the scheme is more simple and convenient, has lower labor intensity, higher efficiency and low cost.
[0030] It should be noted that the described embodiments are only part of the embodiments of the utility model, and all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.
Claims
1. A motor rotor core stacking tool, which is composed of a dummy shaft, a key, a screw, a spacer ring, and a pressing plate, characterized in that, The dummy shaft is made to imitate the actual rotor shaft, the keys are embedded in the surface of the dummy shaft, the number of the screws is four, the number of the gaskets and the number of the pressing plates are two respectively, the gaskets are added on both sides of the rotor core, the pressing plates are outside the gaskets, the screws are fastened through the pressing plates, the pressing plates and the gaskets play the supporting and fixing roles after the punching sheets are stacked, the nuts on the screws can be adjusted according to the different stacking heights of the core punching sheets, so that the cores with different heights can be guaranteed.
2. The motor rotor core stacking press tool according to claim 1, wherein The gap fit is formed between the dummy shaft and the punching sheets.
3. The motor rotor core stacking press tool according to claim 1, wherein The shaft head of the dummy shaft has a threaded hole, a bolt can be screwed into the threaded hole for hoisting and overturning in use.
4. The motor rotor core stacking press tool according to claim 1, wherein The end surface of the pressing plate has two threaded holes for hoisting and overturning of the core in assembly.