Stamping die for stator machining

Abstract

The utility model relates to stamping die technical field, aims at providing a kind of stamping die for stator processing, including base, fixed support and cutter assembly, wherein, fixed support is fixed on base, cutter assembly includes inner cutter and outer cutter, inner cutter is placed in the inner side of material pressing assembly, is used to the inner edge punching of part portion, outer cutter is placed in the outer side of material pressing assembly, is used to the outer edge punching of part portion, blanking port is set up on base, blanking port is correspondingly set with inner cutter, is used to the waste material discharge cut out by inner cutter, the beneficial effects of the utility model are that, cutter assembly is simultaneously synchronous cutting to the inner edge and outer edge of part portion, first, it can improve cutting efficiency, second, it can avoid the positioning error of secondary punching to cause the big error of part after punching.

Description

Technical Field

[0001] This utility model relates to the field of stamping die technology, and more specifically, to a stamping die for stator processing. Background Technology

[0002] In the field of motor manufacturing, the stator, as one of the core components, directly determines the performance stability and mass production capacity of the motor through its processing accuracy and production efficiency. The stator is usually assembled by stacking multiple silicon steel sheets after stamping. Therefore, the stamping die is a key piece of equipment in the stator sheet processing process, and its structural design has a decisive impact on the dimensional accuracy, edge quality, and production efficiency of the stator sheets.

[0003] Currently, most stamping dies used in the industry for stator lamination processing employ a "step-by-step punching" process. This involves first punching the inner edges of the material (such as the shaft holes and winding slots in the stator center) using one set of dies, and then transferring the semi-finished product to another set of dies for punching the outer edges (the outer contour of the stator). While this process can achieve the basic forming of the stator laminations, it presents the following significant problems in actual production: Positioning errors lead to insufficient precision: Step-by-step punching requires multiple positioning of the material. Deviations in the positioning reference between two punching operations, as well as slight offsets during material transport, can easily reduce the coaxiality and contour matching of the inner and outer edges of the stator laminations, ultimately resulting in dimensional deviations in the formed stator laminations. These errors are amplified during subsequent stator stacking, affecting not only the assembly accuracy of the motor's internal structure but also potentially causing noise and vibration during motor operation, and even reducing the motor's power density and lifespan.

[0004] Material misalignment during punching affects quality: Most existing molds directly punch the material. During the punching process, the material is prone to local deformation or misalignment due to the impact force of the cutter, resulting in defects such as burrs and collapsed edges at the punched edge. Additional grinding and finishing processes are required, which further increases production costs and process complexity.

[0005] In summary, existing stamping dies for stator processing have significant shortcomings in precision control, production efficiency, and material stability, making it difficult to meet the current motor industry's demand for "high precision, high efficiency, and low cost" processing of stator laminations. Utility Model Content

[0006] In view of the problems existing in the prior art, this utility model provides a stamping die for stator processing to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a stamping die for stator processing, comprising a base, a fixing frame, and a punching assembly, wherein, The mounting bracket is fixed to the base, and the punching assembly is mounted on the mounting bracket for punching the material on the base. The punching assembly includes a cutting assembly and a clamping assembly. The clamping assembly is used to clamp and fix the part to be retained after punching. The cutting assembly includes an inner cutting blade and an outer cutting blade. The inner cutting blade is located inside the clamping assembly and is used to punch the inner edge of the part. The outer cutting blade is located outside the clamping assembly and is used to punch the outer edge of the part. The base has a discharge port, which is set to correspond to the inner cutting blade to discharge the waste material cut by the inner cutting blade.

[0008] By adopting the above technical solution, the pressing assembly presses the part to be retained, avoiding material displacement during the punching process and thus avoiding large punching errors; the cutting assembly simultaneously cuts the inner and outer edges of the part, which can improve cutting efficiency and avoid large errors in the punched part caused by positioning errors during secondary punching.

[0009] The present invention is further provided that the base is provided with a discharge trough, which is located in front of the material conveying direction along the material discharge port, and is used to discharge the cut finished product.

[0010] The present invention is further configured such that the punching assembly also includes a driving assembly, the driving assembly including a driving component, a lifting plate and a first guide rod, the driving component is mounted on a fixed frame, its telescopic end passes through the fixed frame and is connected to the lifting plate, the bottom end of the first guide rod is fixed to the lifting plate, and the top end of the first guide rod passes through the fixed frame and slides with the fixed frame.

[0011] The present invention is further configured such that both the inner cutting blade and the outer cutting blade are fixed to the lower surface of the lifting plate.

[0012] The present invention is further configured such that the pressing assembly includes a pressing block adapted to the shape of the part to be retained. The pressure block is positioned between the inner and outer cutting blades, and the pressure block can move relative to both the inner and outer cutting blades. A second guide rod is fixed to the top of the pressure block, and the top of the second guide rod passes through the lifting plate and is slidably connected to the lifting plate. The second guide rod is fitted with a spring, and the two ends of the spring are fixedly connected to the lifting plate and the pressure block, respectively.

[0013] The present invention is further provided with a cutting groove on the base that is adapted to the outer cutting blade, so as to avoid collision between the outer cutting blade and the base.

[0014] Compared with the prior art, the present invention provides a stamping die for stator processing, which has the following beneficial effects: 1. During punching, the material clamping assembly clamps the part to be retained to prevent material displacement during punching, which would lead to large punching errors. After punching, when the cutting blade assembly moves upward, the material clamping assembly clamps the cut finished product to prevent it from moving upward synchronously with the cutting blade assembly.

[0015] 2. The cutting assembly simultaneously cuts the inner and outer edges of the part, which can improve cutting efficiency and avoid large errors in the punched part caused by positioning errors during secondary punching.

[0016] 3. A discharge trough is provided on the base along the material conveying direction, and the discharge trough is inclined downward along the conveying direction to facilitate the smooth discharge of the cut finished products. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a stamping die for stator machining. Figure 2 This is a schematic diagram of the base structure; Figure 3 This is a schematic diagram of the punching assembly. Figure 4 This is a structural diagram of the drive assembly and the pressing assembly; Figure 5 This is a schematic diagram of the material pressing assembly.

[0018] In the diagram: 1. Base; 101. Material discharge port; 102. Material discharge chute; 103. Cutting groove; 2. Fixing frame; 3. Punching assembly; 301. Cutting assembly; 3011. Inner cutting blade; 3012. Outer cutting blade; 302. Material pressing assembly; 3021. Material pressing block; 3022. Second guide rod; 3023. Spring; 303. Drive assembly; 3031. Drive component; 3032. Lifting plate; 3033. First guide rod. Detailed Implementation

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0023] like Figure 1 As shown, a stamping die for stator processing includes a base 1, a fixing frame 2, and a punching assembly 3. The fixing frame 2 is fixed on the base 1, and the punching assembly 3 is mounted on the fixing frame 2. The punching assembly 3 includes a drive assembly 303, a cutter assembly 301, and a pressing assembly 302. The drive assembly 303 is mounted on the fixing frame 2, and the cutter assembly 301 and the pressing assembly 302 are both mounted on the drive assembly 303.

[0024] The pressing assembly 302 is used to press and fix the part to be retained after punching, the cutting assembly 301 is used to cut the inner and outer edges of the part to be retained, and the driving assembly 303 is used to drive the pressing assembly 302 to press the part and also to drive the cutting assembly 301 to cut the part.

[0025] like Figure 3 As shown, the cutting assembly 301 includes an inner cutting blade 3011 and an outer cutting blade 3012. The inner cutting blade 3011 is placed inside the pressing assembly 302 and is used to punch the inner edge of the part. The outer cutting blade 3012 is placed outside the pressing assembly 302 and is used to punch the outer edge of the part. A discharge port 101 is provided on the base 1, which is correspondingly provided with the inner cutting blade 3011 and is used to discharge the waste material cut by the inner cutting blade 3011. A cutting groove 103 adapted to the outer cutting blade 3012 is provided on the base 1 to avoid the outer cutting blade 3012.

[0026] like Figure 3-5As shown, the pressing assembly 302 includes a pressing block 3021 adapted to the shape of the part to be retained. The pressing block 3021 is disposed between the inner cutter 3011 and the outer cutter 3012, and the pressing block 3021 can move relative to the inner cutter 3011 and the outer cutter 3012.

[0027] like Figure 1 As shown, the drive assembly 303 includes a drive component 3031, a lifting plate 3032, and a first guide rod 3033. The drive component 3031 is mounted on the fixed frame 2, and its telescopic end passes through the fixed frame 2 and is connected to the lifting plate 3032. The bottom end of the first guide rod 3033 is fixed on the lifting plate 3032, and the top end of the first guide rod 3033 passes through the fixed frame 2 and slides with the fixed frame 2.

[0028] The drive component 3031 can be either a hydraulic cylinder or a pneumatic cylinder.

[0029] Specifically, the inner cutting blade 3011 and the outer cutting blade 3012 are both fixed to the lower surface of the lifting plate 3032. The top of the pressing block 3021 is fixed with a second guide rod 3022, and the top of the second guide rod 3022 passes through the lifting plate 3032 and is slidably connected to the lifting plate 3032. A spring 3023 is sleeved on the second guide rod 3022, and the two ends of the spring 3023 are fixedly connected to the lifting plate 3032 and the pressing block 3021, respectively.

[0030] like Figure 2 As shown, a discharge trough 102 is provided on the base 1. The discharge trough 102 is located in front of the material conveying direction of the material discharge port 101 and is used to discharge the cut finished products. The discharge trough 102 is set inclined downward along the material conveying direction. When the finished product moves to the position of the discharge trough 102, it will slide out smoothly along the discharge trough 102.

[0031] The working principle of the stamping die for stator processing disclosed in this embodiment of the utility model is as follows: Common strip materials used in the production of stator laminations, such as silicon steel sheets or silicon steel sheets, are fed into the space between the base 1 and the fixed frame 2 via an external conveying device. A winding or recycling device can also be pre-installed to wind or recycle the residual steel strip after punching.

[0032] During the punching process, the drive unit 3031 drives the lifting plate 3032 to move downward along the direction of the first guide rod 3033, thereby driving the pressing assembly 302 and the cutting assembly 301 to move downward synchronously. After the pressing block 3021 contacts the steel strip, the lifting plate 3032 continues to move downward, which will keep the pressing block 3021 in that position, and the cutting assembly 301 continues to move downward. At this time, the distance between the pressing block 3021 and the lifting plate 3032 shortens, and the spring 3023 gradually enters a compressed state. The reaction force causes the clamping block to press against the steel strip, providing auxiliary clamping. The cutter assembly 301 continues to move downward, cutting the steel strip through the outer cutter 3012 and the inner cutter 3011. The waste material cut off by the inner cutter 3011 falls into the material drop trough. After the punching is completed, the drive component 3031 drives the lifting plate 3032 to move upward. The cutter assembly 301 leaves the workpiece surface first. At this time, the clamping block 3021 is still pressed against the workpiece surface under the action of the spring 3023 to prevent the workpiece from moving upward synchronously with the cutter assembly 301.

[0033] After the pressing assembly 302 leaves the workpiece, the external conveying equipment or winding equipment drives the steel strip forward. When it is conveyed forward, the cut finished workpiece moves forward one station together. At this time, the punching assembly 3 can continue to punch the steel strip, while the previous cut finished product moves to the discharge trough 102 area and falls into the discharge trough 102 and slides out along the bottom of the discharge trough 102.

[0034] In all the solutions mentioned above, although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamping die for stator machining, characterized in that, Includes a base (1), a mounting bracket (2), and a punching assembly (3), wherein, The mounting bracket (2) is fixed to the base (1), and the punching assembly (3) is installed on the mounting bracket (2) for punching the material on the base (1). The punching assembly (3) includes a cutter assembly (301) and a clamping assembly (302). The clamping assembly (302) is used to clamp and fix the part to be retained after punching. The cutter assembly (301) includes an inner cutter (3011) and an outer cutter (3012). The inner cutter (3011) is placed inside the clamping assembly (302) and is used to punch the inner edge of the part. The outer cutter (3012) is placed outside the clamping assembly (302) and is used to punch the outer edge of the part. The base (1) has a discharge port (101) which is corresponding to the inner cutter (3011) and is used to discharge the waste material cut by the inner cutter (3011).

2. The stamping die for stator processing according to claim 1, characterized in that, The base (1) is provided with a discharge trough (102), which is located in front of the material conveying direction of the discharge port (101) and is used to discharge the cut finished product.

3. The stamping die for stator processing according to claim 1, characterized in that, The punching assembly (3) also includes a drive assembly (303), which includes a drive component (3031), a lifting plate (3032), and a first guide rod (3033). The drive component (3031) is mounted on the fixed frame (2), and its telescopic end passes through the fixed frame (2) and is connected to the lifting plate (3032). The bottom end of the first guide rod (3033) is fixed on the lifting plate (3032), and the top end of the first guide rod (3033) passes through the fixed frame (2) and slides with the fixed frame (2).

4. A stamping die for stator processing according to claim 3, characterized in that, Both the inner cutter (3011) and the outer cutter (3012) are fixed to the lower surface of the lifting plate (3032).

5. A stamping die for stator processing according to claim 4, characterized in that, The pressing assembly (302) includes a pressing block (3021), which is disposed between the inner cutting blade (3011) and the outer cutting blade (3012), and the pressing block (3021) is movable relative to the inner cutting blade (3011) and the outer cutting blade (3012). A second guide rod (3022) is fixed to the top of the pressure block (3021), and the top of the second guide rod (3022) passes through the lifting plate (3032) and is slidably connected to the lifting plate (3032). The second guide rod (3022) is fitted with a spring (3023), and the two ends of the spring (3023) are fixedly connected to the lifting plate (3032) and the pressure block (3021) respectively.

6. A stamping die for stator processing according to claim 4, characterized in that, The base (1) has a cutting groove (103) adapted to the outer cutting blade (3012) for avoiding the outer cutting blade (3012).

Images