Simple key groove machining device

Abstract

The utility model discloses a simple keyway processing device which comprises a driving motor, a worm and gear reducer, a crank, a connecting rod, a guide sleeve, a pull rod and a base, the guide sleeve and the worm and gear reducer are fixed on the base, an input shaft of the worm and gear reducer is connected with the driving motor, and an output shaft of the worm and gear reducer is connected with the crank. The pull rod is slidably inserted into a guide hole of the guide sleeve, one end of the pull rod is provided with the cutter, the other end of the pull rod is rotatably connected with the tail end of the connecting rod, and the head end of the connecting rod is connected with an output shaft of the worm and gear reducer through a crank. The rotary motion of the output shaft of the worm and gear speed reducer is converted into the linear motion of the pull rod through the crank and the connecting rod, the key groove is machined in the workpiece through the cutter installed on the pull rod, the structure is simple, cost is low, the machining cost of small-batch parts can be reduced, and the machining efficiency is improved. And the key groove machining requirements of small enterprises are met.

Description

Technical Field

[0001] The utility model relates to a simple keyway processing device which can be used on a common lathe and belongs to the technical field of mechanical processing equipment. Background Art

[0002] Slotting machines are a widely used type of machine tool, suitable for machining keyways in various mechanical components. They are widely used in the manufacturing of reducers, gears, sprockets, worm gears, and other applications, offering high machining precision, high efficiency, and low costs. However, their high cost makes them unaffordable for some small businesses, and using them to process small batches of parts significantly increases product costs, significantly limiting their application. Therefore, it is essential to design a simple keyway machining device suitable for use on common lathes. Utility Model Content

[0003] The purpose of the utility model is to provide a simple keyway processing device to address the shortcomings of the existing technology, so as to reduce the processing cost of small batch parts and meet the keyway processing needs of small enterprises.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A simple keyway processing device includes a drive motor, a worm gear reducer, a crank, a connecting rod, a guide sleeve, a pull rod and a base. The guide sleeve and the worm gear reducer are fixed on the base, the input shaft of the worm gear reducer is connected to the drive motor, the pull rod is slidably inserted in the guide hole of the guide sleeve, a tool is installed at one end of the pull rod, and the other end is rotatably connected to the end of the connecting rod. The head end of the connecting rod is connected to the output shaft of the worm gear reducer through the crank.

[0006] The above-mentioned simple keyway processing device, the crank includes a coaxially connected rotating shaft and a turntable, the rotating shaft is connected to the output shaft of the worm gear reducer, an eccentric shaft hole is provided on the turntable, and the connecting rod is rotatably connected to the turntable through a pin shaft installed in the eccentric shaft hole.

[0007] In the above-mentioned simple keyway processing device, a plurality of eccentric shaft holes are provided on the turntable, and the distances between the plurality of eccentric shaft holes and the rotating shaft are different.

[0008] In the above-mentioned simple keyway processing device, the pull rod is rotatably connected to the end of the connecting rod through a Y-shaped joint.

[0009] The utility model utilizes a crank and a connecting rod to convert the rotational motion of the output shaft of a worm gear reducer into the linear motion of a pull rod, and a tool installed on the pull rod processes a keyway on the workpiece. The utility model has a simple structure and low cost. The use of this device can reduce the processing cost of small batch parts and meet the keyway processing needs of small enterprises. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0011] Figure 1 It is a structural diagram of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the crank;

[0013] Figure 3 It is a schematic diagram of the structure of the Y-type connector, where Figure 3 (a) is the main view; Figure 3 (b) is the left view.

[0014] The numbers in the figure are as follows: 1. Drive motor, 2. Crank, 3. Connecting rod, 4. Y-type joint, 5. Guide sleeve, 6. Pull rod, 7. Worm gear reducer, 8. Base.

[0015] 2-1, rotating shaft, 2-2, turntable, 2-3, eccentric shaft hole. DETAILED DESCRIPTION

[0016] The utility model aims to provide a simple keyway processing device for the deficiencies in the prior art, so as to meet the requirements of the internal keyway processing technology of some workpieces in a complete production line.

[0017] See Figure 1-Figure 3 The utility model mainly includes a drive motor 1, a crank 2, a connecting rod 3, a Y-type joint 4, a guide sleeve 5, a pull rod 6, a worm gear reducer 7 and a base 8. The drive motor 1 is a power source, which drives the crank 2 to rotate clockwise through the worm gear reducer 7. The pull rod 6 is slidably inserted into the guide hole of the guide sleeve 5. One end of the pull rod 6 is installed with a tool, and the other end is rotatably connected to the end of the connecting rod 3 through the Y-type joint 4. The head end of the connecting rod 3 is connected to the output shaft of the worm gear reducer 7 through the crank 2. The input shaft of the worm gear reducer 7 is connected to the drive motor 1. The guide sleeve 5 and the worm gear reducer 7 are installed on the base 8.

[0018] See Figure 2 The crank 2 includes a coaxially connected rotating shaft 2-1 and a turntable 2-2. The rotating shaft 2-1 is connected to the output shaft of the worm gear reducer 7. An eccentric shaft hole 2-3 is provided on the turntable 2-2. A pin is provided in the eccentric shaft hole 2-3. The connecting rod 3 is rotatably connected to the turntable 2-2 through the pin.

[0019] When in use, use the fixture of an ordinary lathe to clamp the workpiece, fix the base 8 on the tool holder of the lathe, start the drive motor 1, and the drive motor 1 drives the crank 2 to rotate clockwise through the worm gear reducer 7. The crank 2 drives the pull rod 6 to move linearly in the guide sleeve 5 through the connecting rod 3, and the tool on the pull rod 6 machines a keyway on the workpiece.

[0020] In order to adjust the stroke of the pull rod 6 for linear motion, multiple eccentric shaft holes 2-3 are set on the turntable 2-2, and the distances between the multiple eccentric shaft holes 2-3 and the rotating shaft 2-1 are different. When the connecting rod 3 is connected to the turntable 2-2 through a pin shaft, the stroke of the pull rod 6 can be adjusted by inserting the pin shaft into different eccentric shaft holes 2-3.

[0021] The utility model has a simple structure and does not have high requirements on materials, so the manufacturing cost is low.

[0022] The utility model solves the problem that when a key slot is required, the process can only rely on outsourcing processing, greatly reduces the processing cost, improves the processing efficiency, and is convenient for on-site use.

[0023] In addition, the utility model can also reduce the wear of ordinary lathes and eliminate the potential safety hazards during processing. The utility model can complete the key slotting process for some products without slotting machine equipment to ensure the quality of the products.

Claims

1. A simple keyway processing device, characterized in that: The invention comprises a driving motor (1), a worm gear reducer (7), a crank (2), a connecting rod (3), a guide sleeve (5), a pull rod (6) and a base (8), wherein the guide sleeve (5) and the worm gear reducer (7) are fixed on the base (8), the input shaft of the worm gear reducer (7) is connected to the driving motor (1), the pull rod (6) is slidably inserted into the guide hole of the guide sleeve (5), a tool is installed at one end of the pull rod (6), and the other end is rotatably connected to the end of the connecting rod (3), and the head end of the connecting rod (3) is connected to the output shaft of the worm gear reducer (7) through the crank (2).

2. A simple keyway processing device according to claim 1, characterized in that: The crank (2) comprises a coaxially connected rotating shaft (2-1) and a rotating disk (2-2); the rotating shaft (2-1) is connected to the output shaft of the worm gear reducer (7); an eccentric shaft hole (2-3) is provided on the rotating disk (2-2); and the connecting rod (3) is rotatably connected to the rotating disk (2-2) via a pin installed in the eccentric shaft hole (2-3).

3. A simple keyway processing device according to claim 2, characterized in that: A plurality of eccentric shaft holes (2-3) are provided on the rotating disk (2-2), and the distances between the plurality of eccentric shaft holes (2-3) and the rotating shaft (2-1) are different.

4. A simple keyway processing device according to any one of claims 1 to 3, characterized in that: The pull rod (6) is rotatably connected to the end of the connecting rod (3) via a Y-shaped joint (4).

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