Shell keyway cutting device

Abstract

The present invention provides a shell keyway cutting processing device, including a positioning mandrel, a tool holder, a tool bar and a blade, one end of the positioning mandrel is used to be clamped on the main shaft of a planer, the other end of the positioning mandrel is used to be fixedly connected to a workpiece by a pin that penetrates the positioning mandrel, the tool holder is used to be clamped on the planer tool holder, one end of the tool bar is inserted into the tool holder, and the other end of the tool bar extends out of the tool holder, the blade is fixed to the outer end face of the tool bar by a screw, the upper and lower sides of the blade are set with two blade edges, the left and right sides of the blade are set with two blade walls, and the two blade walls are mirror-imaged to each other by the line connecting the midpoints of the two blades. The technical solution of the present invention is adopted, by making the overall structure of the blade evenly distributed, it is convenient to clean the root of the keyway during the planing process, and the quality of the shell keyway cutting processing is improved. By using the positioning mandrel to clamp the workpiece, it is convenient to correctly align the central axis of the workpiece, which lays a foundation for improving the processing quality.

Description

Technical Field

[0001] The invention belongs to the technical field of motors, and in particular relates to a housing keyway cutting device. Background Art

[0002] At present, the existing electric motor products generally include a housing, and the existing electric motor housing is generally provided with a plurality of keyways. The cutting and processing of these keyways is difficult. In the prior art, two methods are mainly used for processing and forming. One is to adopt an integral extrusion molding process, so that the housing and the corresponding keyway features are formed by extruding the material. In this method, the raw materials are generally in powder granular form. The extrusion molding process requires strict control of the ambient temperature, pressure conditions, and molding time. Any carelessness will lead to product scrapping and affect the quality of the finished product. The other method is to adopt a planer for cutting and processing, and the planer clamped on the planer cuts part of the material through the reciprocating movement to form the keyway. However, the keyway root processed by this method is not easy to clean the root, and the molding quality is also poor. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a housing keyway cutting and processing device.

[0004] The present invention is achieved through the following technical solutions.

[0005] The present invention provides a shell keyway cutting processing device, comprising a positioning mandrel, a tool holder, a tool rod and a blade, wherein one end of the positioning mandrel is used to be clamped on a planer spindle, the other end of the positioning mandrel is used to be fixedly connected to a workpiece by a latch penetrating the positioning mandrel, the tool holder is used to be clamped on a planer tool holder, one end of the tool rod is inserted into the tool holder, the other end of the tool rod extends out of the tool holder, the blade is fixed to the outer end surface of the tool rod by screws, two blades are arranged on the upper and lower sides of the blade, two blade walls are arranged on the left and right sides of the blade, and the two blade walls are mirror-imaged to each other with the line connecting the midpoints of the two blades.

[0006] The projection of the blade edge in the front view of the blade is an arc.

[0007] The arc line is an arc line that protrudes toward the upper and lower sides of the blade or an arc line that is recessed toward the inside of the blade.

[0008] The projection of the blade wall in the front view of the blade is a broken line.

[0009] The fold line is a fold line that protrudes toward the left and right sides of the blade or a fold line that is recessed toward the inside of the blade.

[0010] The material of the blade is alloy steel with the grade of CrWMn.

[0011] The number of the screws is more than 2.

[0012] The central axis of the latch is arranged along the vertical direction.

[0013] The housing keyway cutting device also includes a pressing plate. When the workpiece is fixedly connected to the positioning mandrel, the outer end face of the positioning mandrel is flush with the outer surface of the workpiece. The pressing plate is fixedly connected to the outer end face of the positioning mandrel and covers the workpiece.

[0014] The knife seat is in the shape of a rectangular parallelepiped as a whole.

[0015] The beneficial effects of the present invention are as follows: by adopting the technical solution of the present invention, by setting the two edge walls on the blade to be a structure that is mirror-imaged to each other with the line between the midpoints of the two blades, the overall structure of the blade is evenly distributed, which is convenient for cleaning the root of the keyway during the planing process, thereby improving the cutting quality of the shell keyway. The blade is first installed on the tool rod and then inserted into the tool holder, which is convenient for replacing the blade. The tool holder is in the shape of a rectangular parallelepiped as a whole, which is convenient for clamping and pressing and tightening. In addition, by adopting a positioning mandrel to clamp the workpiece, it is convenient to correctly align the center axis of the workpiece, thereby laying a foundation for improving the processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the clamping structure of the positioning mandrel and the workpiece of the present invention;

[0017] Figure 2 This is a front view of the connection structure of the knife holder, the knife rod and the blade of the present invention;

[0018] Figure 3 It is a right side view of the connection structure of the knife seat, the knife rod and the blade of the present invention;

[0019] Figure 4 It is a front view of a blade of the present invention.

[0020] In the figure: 1-positioning mandrel, 2-tool holder, 3-tool bar, 4-knife blade, 5-latch pin, 6-workpiece, 7-pressing plate, 21-knife edge, 22-knife wall. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0022] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the present invention provides a shell keyway cutting and processing device, including a positioning mandrel 1, a tool holder 2, a tool bar 3 and a blade 4, one end of the positioning mandrel 1 is used to be clamped on the main shaft of a planer, the other end of the positioning mandrel 1 is used to be fixedly connected with a workpiece 6 by a pin 5 penetrating the positioning mandrel 1, the tool holder 2 is used to be clamped on the tool holder of the planer, one end of the tool bar 3 is inserted into the tool holder 2, and the other end of the tool bar 3 extends out of the tool holder 2, the blade 4 is fixed to the outer end surface of the tool holder 3 by a screw, the upper and lower sides of the blade 4 are provided with two blades 21, the left and right sides of the blade 4 are provided with two blade walls 22, and the two blade walls 22 are mirror-imaged to each other with the line connecting the midpoints of the two blades 21. Preferably, the tool holder 2 is in the shape of a rectangular parallelepiped as a whole.

[0023] Further, the projection of the blade 21 in the front view of the blade 4 is an arc. This is to facilitate the profiling of the shape of the keyway. The arc is an arc that protrudes to the upper and lower sides of the blade 4 or an arc that is recessed into the inside of the blade 4. The projection of the blade wall 22 in the front view of the blade 4 is a broken line. The broken line is a broken line that protrudes to the left and right sides of the blade 4 or a broken line that is recessed into the inside of the blade 4. The material of the blade 4 is alloy steel with a grade of CrWMn. The number of screws is more than 2.

[0024] In addition, the central axis of the pin 5 is arranged along the vertical direction. The housing keyway cutting device also includes a pressing plate 7. When the workpiece 6 is fixedly connected to the positioning mandrel 1, the outer end face of the positioning mandrel 1 is flush with the outer surface of the workpiece 6. The pressing plate 7 is fixedly connected to the outer end face of the positioning mandrel 1 and covers the workpiece 6.

[0025] By adopting the technical solution of the present invention, the two blade walls on the blade are arranged as a structure in which the line between the midpoints of the two blades is mirror-imaged to each other, so that the overall structure of the blade is evenly distributed, which is convenient for cleaning the root of the keyway during the planing process, thereby improving the cutting quality of the shell keyway. The blade is first installed on the tool rod and then inserted on the tool holder, which is convenient for replacing the blade. The tool holder is in the shape of a rectangular parallelepiped as a whole, which is convenient for clamping and pressing and tightening. In addition, by adopting a positioning mandrel to clamp the workpiece, it is convenient to correctly align the center axis of the workpiece, thereby laying a foundation for improving the processing quality.

Claims

1. A housing keyway cutting device, Features: The invention comprises a positioning mandrel (1), a tool seat (2), a tool rod (3) and a blade (4); one end of the positioning mandrel (1) is used for clamping on a planer main shaft; the other end of the positioning mandrel (1) is used for fixing and connecting with a workpiece (6) by means of a latch (5) penetrating the positioning mandrel (1); the tool seat (2) is used for clamping on a tool holder of the planer; one end of the tool rod (3) is inserted into the tool seat (2); the other end of the tool rod (3) extends out of the tool seat (2); and the blade (4) is used for fixing and connecting the positioning mandrel (1) to a workpiece (6) by means of a latch (5) penetrating the positioning mandrel (1); (4) The blade (4) is fixed to the outer end surface of the blade rod (3) by screws, and the upper and lower sides of the blade (4) are provided with two blade edges (21), and the left and right sides of the blade (4) are provided with two blade walls (22), and the two blade walls (22) are mirror-imaged to each other with the line connecting the midpoints of the two blade edges (21); the projection of the blade wall (22) in the main view of the blade (4) is a broken line, and the broken line is a broken line protruding to the left and right sides of the blade (4) or a broken line recessed into the inside of the blade (4).

2. The housing keyway cutting device according to claim 1, Features: The projection of the blade (21) in the front view of the blade (4) is an arc.

3. The housing keyway cutting device according to claim 2, Features: The arc line is an arc line that protrudes toward the upper and lower sides of the blade (4) or an arc line that is recessed toward the inside of the blade (4).

4. The housing keyway cutting device according to claim 1, Features: The blade (4) is made of alloy steel with a grade of CrWMn.

5. The housing keyway cutting device according to claim 1, Features: The number of the screws is more than 2.

6. The housing keyway cutting device according to claim 1, Features: The central axis of the latch pin (5) is arranged along the vertical direction.

7. The housing keyway cutting device according to claim 1, Features: The housing keyway cutting and processing device also includes a pressure plate (7). When the workpiece (6) and the positioning mandrel (1) are fixedly connected together, the outer end face of the positioning mandrel (1) is flush with the outer surface of the workpiece (6), and the pressure plate (7) is fixedly connected to the outer end face of the positioning mandrel (1) and covers the workpiece (6).

8. The housing keyway cutting device according to claim 1, Features: The knife seat (2) is in the shape of a rectangular parallelepiped as a whole.

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