Device for machining key groove of large gear

Abstract

The utility model discloses a device for machining a key groove of a large gear, which relates to a planer and comprises a base, a bent plate, a stud assembly, the large gear, a crank throw tool post, a tool, a horizontal tool rest, a lathe bed, a rotating tire and a vertical tool rest, the bent plate, the rotating tire and the planer are arranged on the base, and the bent plate is fastened on the base through a bolt. The rotating tire is close to the bent plate and is arranged on the base to support and position a workpiece, and the large gear is arranged on a roller above the rotating tire and is positioned and clamped through a stud assembly; a horizontal tool rest of the planer is installed on a vertical tool rest, a crank tool post is installed on the horizontal tool rest, a tool is installed in a tool pressing hole of the crank tool post, and feeding movement in the horizontal direction and the vertical direction of a machined key groove is achieved. The bull gear keyway processing device can solve the problem of bull gear keyway processing by using planing instead of inserting, is convenient to clamp, reliable to use and good in replaceability, and expands the processing range of shaping.

Description

Technical Field

[0001] The utility model relates to a mechanical processing keyway device, in particular to a device for processing a keyway of a large gear with a shaper, belonging to the technical field of mechanical processing. Background Art

[0002] At present, when broaching a keyway in the hole of a large gear, the workpiece is first clamped by a three-jaw self-centering chuck, or directly clamped on the shaper table with a pressing plate and parallel pad irons. During clamping, first lightly press the workpiece, and use a scribing block or dial indicator to align it according to the outer circle or inner hole to make the center of the workpiece coincide with the center of the table, and then clamp the workpiece tightly; it is necessary to stop the machine when inspecting the width of the keyway and the symmetry of the keyway with respect to the center line of the workpiece; there is also impact during broaching, and the working stroke of broaching is limited by the rigidity of the tool rod, so the groove length dimension should not be too large; when milling the keyway of the gear inner hole, it is suitable for mass production, with a fast processing speed, and it is difficult to control the balance of the cutting depth and speed during processing. When using the broaching method, electrical discharge machining method, and laser machining method to cut the keyway of the gear inner hole, the surface smoothness of the keyway is relatively high, which is suitable for products with high requirements for the surface quality of the keyway, but the processing cost is high. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a device for processing a keyway of a large gear with a shaper aiming at the defects existing in the prior art.

[0004] To solve this technical problem, the utility model provides a device for processing a keyway of a large gear, which relates to a shaper and includes a base, a bending plate, a stud bolt assembly, a large gear, a crank tool post, a tool, a horizontal tool rest, a machine body, a turning fixture and a vertical tool rest. The bending plate, the turning fixture and the shaper are placed on the base. The bending plate is fastened to the base by bolts. The turning fixture is installed near the bending plate on the base to support and position the workpiece. The large gear is placed on the rollers above the turning fixture and is positioned and clamped by the stud bolt assembly. The horizontal tool rest of the shaper is installed on the vertical tool rest. The crank tool post is installed on the horizontal tool rest. The tool is installed in the tool pressing hole of the crank tool post to realize the horizontal and vertical feeding movements for processing the keyway.

[0005] The horizontal tool rest obtains a fine feed in the horizontal direction through a handwheel, a handle, a graduated dial and an adjusting screw rod.

[0006] The stroke length of the ram of the shaper is 600 mm, and the cutting speed is 13.1 m / min.

[0007] Advantageous Effects: The utility model can realize replacing broaching with shaping to solve the problem of processing the keyway of a large gear, is convenient for clamping, reliable in use, good in interchangeability, and expands the processing range of shaper cutting. Brief Description of the Drawings

[0008] Figure 1 It is a structural schematic diagram of the utility model;

[0009] Figure 2 This is the front elevation view showing the structure of the crank knife post of the present utility model;

[0010] Figure 3 This is the side elevation view showing the structure of the crank knife post of the present utility model;

[0011] Figure 4 This is the front elevation view showing the structure of the dial of the present utility model;

[0012] Figure 5 This is the side elevation view showing the structure of the dial of the present utility model;

[0013] Figure 6 This is the side elevation view showing the structure of the large gear of the present utility model;

[0014] Figure 7 This is the front elevation view showing the structure of the large gear of the present utility model.

[0015] In the figure: 1, base; 2, bending plate; 3, stud bolt assembly; 4, large gear; 5, crank knife post; 6, tool; 7, horizontal tool rest; 8, bed; 9, turning fixture; 10, vertical tool rest. Detailed implementation manners

[0016] The following makes a specific description of the present utility model in conjunction with the accompanying drawings and embodiments.

[0017] As Figures 1-7 shown, the present utility model provides a device for machining keyways of large gears, which relates to a planer and includes a base 1, a bending plate 2, a stud bolt assembly 3, a large gear 4, a crank knife post 5, a tool 6, a horizontal tool rest 7, a bed 8, a turning fixture 9 and a vertical tool rest 10. The bending plate 2, the turning fixture 9 and the planer are placed on the base 1. The bending plate 2 is fastened to the base 1 by bolts. The turning fixture 9 is installed on the base 1 near the bending plate 2 to support and position the workpiece. The large gear 4 is placed on the rollers above the turning fixture 9 and is positioned and clamped by the stud bolt assembly 3. The horizontal tool rest 7 of the planer is installed on the vertical tool rest 10, the crank knife post 5 is installed on the horizontal tool rest 7, and the tool 6 is installed in the tool pressing hole of the crank knife post 5 to realize the horizontal and vertical two-direction feeding movements for machining the keyway.

[0018] The horizontal tool rest 7 obtains a fine feed in the horizontal direction through a handwheel, a handle, a dial and an adjusting screw.

[0019] The stroke length of the planer ram is 600 mm, and the cutting speed is 13.1 m / min.

[0020] During use, first install the bending plate 2, the turning jig 9, and the planer on the base 1 to form an integral whole. After adjusting in the horizontal and vertical directions, fasten the bending plate 2 to the base 1 with bolts; install the turning jig 9 on the base 1 according to the machining position shown in the figure, and the workpiece can be supported and positioned through the turning jig 1; rotate the large gear to facilitate aligning the keyway orientation; adjust the center distance between the two rollers to adapt to the machining of keyways on workpieces with different diameters. Place the large gear 4 on the rollers. After aligning the keyway position of the workpiece, tighten the double-headed bolt and the clamp assembly to complete the positioning and clamping operations of the workpiece.

[0021] When modifying the shaper, first remove the tool box of the vertical tool rest 10 and retain the lifting part of the vertical tool rest 10; install the horizontal tool rest 7 on the vertical tool rest 10; then install the crank tool post 5 on the horizontal tool rest 7 to obtain the horizontal and vertical feed motions for machining the keyway.

[0022] Install the tool 6 in the tool pressing hole of the crank tool post 5, and adjust the stroke length of the ram of the planer to 600 mm and the cutting speed to 13.1 m / min. Start the machine tool (point-move and run idle), adjust the appropriate tool position and the non-cutting distance; then perform trial cutting to check the machining accuracy, the rigidity and stability of the device and the tool. After it is normal, it can be transferred to normal machining.

[0023] The keyway planing consists of two processes: rough machining and finish machining. 1. Rough machining: Operate the vertical tool rest 10 and the horizontal tool rest 7 to roughly plane the keyway prototype according to the scribed contour, and leave a machining allowance of 0.2 - 0.5 mm. 2. Finish machining: Replace the finish machining tool 6, align the tool according to the scribed center line, measure the dimensional accuracy of the keyway and the position accuracy of the keyway relative to the center of the workpiece. According to the measurement data, obtain the fine feed in the horizontal and vertical directions through the handwheel, the dial, and the adjusting screw rod, determine the feed amount of the keyway size, and perform the finish planing of the keyway surface until the keyway is completely machined.

[0024] Utilize the maximum planing length of 600 mm of the B665 type shaper to realize planing instead of slotting to solve the problem of machining the keyway of the large gear.

[0025] The above embodiments of the present utility model are only examples, not the only ones. All changes within the scope of the present utility model or equivalent to the present utility model are encompassed by the present utility model.

Claims

1. A device for machining the keyway of a large gear, characterized in that: The present invention relates to a planer, which comprises a base (1), a bending plate (2), a stud bolt assembly (3), a large gear (4), a crank tool post (5), a tool (6), a horizontal tool rest (7), a bed (8), a turning fixture (9) and a vertical tool rest (10). The bending plate (2), the turning fixture (9) and the planer are placed on the base (1). The bending plate (2) is fastened to the base (1) by bolts. The turning fixture (9) is installed near the bending plate (2) on the base (1) to support and position the workpiece. The large gear (4) is placed on the roller above the turning fixture (9) and is positioned and clamped by the stud bolt assembly (3). The horizontal tool rest (7) of the planer is installed on the vertical tool rest (10), the crank tool post (5) is installed on the horizontal tool rest (7), and the tool (6) is installed in the tool pressing hole of the crank tool post (5) to realize the horizontal and vertical feeding movements for machining keyways.

2. The machining device for the keyway of a large gear according to claim 1, characterized in that: The horizontal tool rest (7) obtains a fine horizontal feed through a handwheel, a handle, a dial and an adjusting screw.

3. The keyway machining device for large gears according to claim 1 or 2, characterized in that: The stroke length of the planer ram is 600 mm and the cutting speed is 13.1 m / min.

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