A shaft keyway processing device and a processing method thereof

Abstract

The present invention relates to the technical field of shaft processing equipment, and provides a shaft keyway processing device and a processing method thereof, wherein a rotating rod is fixedly sleeved with a rotating toothed disc meshing with a cylindrical gear, a screw is sleeved with a screw toothed disc, a rotating column is fixedly connected to the screw toothed disc and rotatably installed on the side wall of a housing, the rotating column and the screw are threadedly connected, and a steering unit for changing the direction of the screw toothed disc is sleeved on the cylindrical gear. The rotating toothed disc moves relatively quickly toward the direction of a mounting plate under the reverse rotation of the screw toothed disc, and at the same time, the mounting table cooperates with the sliding and lifting of the screw to relatively quickly and horizontally process the size of a shallow keyway on the cylindrical surface of the shaft, the motor rotates in the reverse direction, the rotating toothed disc rotates counterclockwise, the screw toothed disc is stationary, the screw is pushed by the rotating toothed disc and returns relatively slowly to the original path, thereby improving its processing accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft processing equipment, and in particular to a shaft keyway processing device and a processing method thereof. Background Art

[0002] Conventional technology in this field relates to a keyway processing method for shaft parts, which method includes the following steps: first, the shaft parts are fixed and clamped; second, a deep hole is drilled or milled on the shaft using a drill or a milling cutter, and the depth of the deep hole matches the final depth of the keyway; then, based on the deep hole, the shape of the keyway is formed by transverse milling by replacing multiple cutter heads one by one.

[0003] This traditional processing method can indeed realize the processing of keyways. Multiple clamping and tool settings will lead to cumulative errors, affecting the final keyway processing accuracy. If a single cutter head is used to process the keyway, the error can be relatively reduced and the accuracy can be improved. How to use a cutter head to realize the processing of shaft keyways is urgently needed. To this end, we propose a shaft keyway processing device and a processing method thereof. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides a shaft keyway processing device and a processing method thereof, which overcome the deficiencies in the prior art, have a reasonable design, a compact structure, and solve the existing

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A shaft keyway processing device comprises a shell, a mounting plate is installed on the shell, a rotatable cylindrical gear is installed between the shells, a rotating rod composed of a rotating rod and a screw is installed between the mounting plate and the shell, the ends of the screw are connected to a slider and a processing cutter head in sequence, a rotating toothed disk meshing with the cylindrical gear is fixedly sleeved on the rotating rod, a screw toothed disk is sleeved on the screw, a rotating column is fixedly connected to the screw toothed disk and rotatably installed on the side wall of the shell, the rotating column and the screw are threadedly connected, and a steering unit for changing the direction of the screw toothed disk is sleeved on the cylindrical gear.

[0009] Preferably, the steering unit includes a steering plate movably sleeved on the cylindrical gear shaft and a first steering gear fixedly sleeved on the cylindrical gear shaft, a second steering gear and a third steering gear meshing with the first steering gear are also installed on the steering plate, and a fourth steering gear meshing with the third steering gear is also installed on the steering plate.

[0010] Preferably, the first steering gear, the third steering gear, and the fourth steering gear have the same gear radius, and the radii of the cylindrical gear, the rotating toothed disc, and the screw toothed disc are the same.

[0011] Preferably, the bottom of the steering unit is an arc-shaped structure, and a steering gear for driving the steering unit to rotate is installed on the arc-shaped surface.

[0012] Preferably, a linkage rotating rod for driving the steering gear is also connected between the mounting plate and the housing, and a linkage gear and a one-way ratchet are fixedly sleeved on the linkage rotating rod.

[0013] Preferably, the linkage gear is meshed with the steering gear of the steering plate, the length of the one-way ratchet is greater than the length of the machined keyway, and the one-way ratchet can be meshed with the rotating gear disc.

[0014] Preferably, a belt pulley is fixedly sleeved on the rotating shaft of the cylindrical gear, and the belt pulley is driven by a motor.

[0015] Preferably, a processing method based on a shaft keyway processing device includes:

[0016] Step 1: Fix the shaft on the mounting table and position the area to be processed of the shaft and the cutter head;

[0017] Step 2: Start the motor, the motor drives the cylindrical gear to rotate counterclockwise synchronously, and drives the second steering gear and the rotating toothed disc to rotate clockwise at the same time, the second steering gear and the screw toothed disc are meshed, that is, the screw toothed disc is driven to rotate counterclockwise, and the rotating toothed disc moves relatively quickly toward the direction of the mounting plate under the reverse rotation of the screw toothed disc. At the same time, the mounting table cooperates with the sliding and lifting of the screw rod, and the size of the shallow keyway can be processed on the cylindrical surface of the shaft relatively quickly. At this time, the rotating toothed disc is meshed with the one-way ratchet, and the one-way ratchet rotates with the rotating toothed disc, and the one-way ratchet will not drive the linkage rotating rod to rotate;

[0018] Step 3: The motor rotates in the opposite direction, driving the cylindrical gear to rotate clockwise. At this time, the rotating toothed disc rotates counterclockwise, the screw toothed disc is stationary, and the mounting table cooperates with the sliding and lifting of the screw. The screw is pushed by the rotating toothed disc and returns relatively slowly to the original path, thereby improving its processing accuracy. At the same time, the rotating toothed disc engages with the one-way ratchet, driving the one-way ratchet and the linkage gear to rotate clockwise. At this time, the linkage gear engages with the steering gear of the steering plate, driving the steering plate to rotate counterclockwise until the fourth steering gear engages with the screw toothed disc. At this time, the rotating toothed disc and the screw toothed disc rotate counterclockwise. Since the rotating speed of the rotating toothed disc is less than that of the screw toothed disc, the movement speed of the screw is further slowed down, thereby further improving its processing accuracy.

[0019] (III) Beneficial effects

[0020] The embodiment of the present invention provides a shaft keyway processing device and a processing method thereof, which has the following beneficial effects:

[0021] 1. The rotating toothed disc moves relatively quickly toward the mounting plate under the reverse rotation of the screw toothed disc. At the same time, the mounting table cooperates with the sliding and lifting of the screw to relatively quickly process the shallow keyway size on the cylindrical surface of the shaft. The motor rotates in the opposite direction, the rotating toothed disc rotates counterclockwise, the screw toothed disc is stationary, and the screw is pushed by the rotating toothed disc and returns relatively slowly to the original path, thereby improving its processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal initial state structure of the present invention;

[0024] Figure 3 For the present invention Figure 2 Schematic diagram from another perspective;

[0025] Figure 4 This is a schematic diagram of the structure of the reverse rotation inside the present invention;

[0026] Figure 5 For the present invention Figure 4 Schematic diagram from another perspective;

[0027] Figure 6 It is a schematic diagram of the present invention after internal processing is completed;

[0028] Figure 7 Schematic diagram of the shaft keyway processed by the structure of the present invention.

[0029] In the figure: 1. housing; 11. slide rail; 12. slider; 13. cutter head; 14. mounting plate; 2. cylindrical gear; 21. belt pulley; 3. steering plate; 31. first steering gear; 32. second steering gear; 33. third steering gear; 34. fourth steering gear; 4. rotating rod; 41. screw rod; 42. rotating toothed disc; 43. screw rod toothed disc; 44. rotating column; 5. linkage rotating rod; 51. linkage gear; 52. one-way ratchet. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Refer to the attached Figure 1-7A shaft keyway processing device comprises a shell 1, a mounting plate 14 is mounted on the shell 1, a rotatable cylindrical gear 2 is mounted between the shells 1, a rotating rod composed of a rotating rod 4 and a screw rod 41 is mounted between the mounting plate 14 and the shell 1, the rotating rod 4 and the screw rod 41 are fixedly connected, the ends of the screw rod 41 are connected to a slider 12 and a processing cutter head 13 in sequence, the outside of the shell 1 is connected to a slide rail 11 for the slider 12 to slide, the cutter head 13 is connected to the slider 12, a rotating toothed disc 42 meshing with the cylindrical gear 2 is fixedly sleeved on the rotating rod 4, a screw toothed disc 43 is sleeved on the screw rod 41, a rotating column 44 is fixedly connected to the screw toothed disc 43 and is rotatably mounted on the side wall of the shell 1, the rotating column 44 is threadedly connected to the screw rod 41, and a steering unit for changing the direction of the screw toothed disc 43 is sleeved on the cylindrical gear 2.

[0032] In this embodiment, the steering unit includes a steering plate 3 movably sleeved on the rotating shaft of the cylindrical gear 2 and a first steering gear 31 fixedly sleeved on the rotating shaft of the cylindrical gear 2. The radius of the first steering gear 31 is smaller than the radius of the cylindrical gear 2. The steering plate 3 is also equipped with a second steering gear 32 and a third steering gear 33 that mesh with the first steering gear 31. The second steering gear 32 and the third steering gear 33 are fixed on the steering plate 3 through a rotating shaft. The steering plate 3 is also equipped with a fourth steering gear 34 that meshes with the third steering gear 33. When the steering plate 3 rotates, the fourth steering gear 34 meshes with the screw gear disc 43.

[0033] In this embodiment, the first steering gear 31, the third steering gear 33, and the fourth steering gear 34 have the same gear radius, and the cylindrical gear 2, the rotating toothed disc 42, and the screw toothed disc 43 have the same radius.

[0034] Furthermore, the bottom of the steering unit is an arc-shaped structure, and a steering gear for driving the steering unit to rotate is installed on the arc-shaped surface.

[0035] Furthermore, a linkage rotating rod 5 for driving the steering gear is connected between the mounting plate 14 and the housing 1, and a linkage gear 51 and a one-way ratchet 52 are fixedly sleeved on the linkage rotating rod 5. The one-way ratchet 52 can control the rotation direction of the linkage rotating rod 5. When the one-way ratchet 52 engages with the rotating gear plate 42 rotating counterclockwise, the one-way ratchet 52 drives the linkage rotating rod 5 to rotate clockwise.

[0036] Furthermore, the linkage gear 51 is meshed with the steering gear of the steering plate 3 , and the length of the one-way ratchet 52 is greater than the length of the processed keyway, so that the one-way ratchet 52 can mesh with the rotating gear disc 42 .

[0037] In this embodiment, a belt pulley 21 is fixedly sleeved on the rotating shaft of the cylindrical gear 2. The belt pulley 21 is driven by a motor which is fixed in the housing 1 (not shown in the figure).

[0038] A method for machining a keyway of a shaft, comprising:

[0039] Step 1: Fix the shaft on the mounting table and position the area to be processed of the shaft and the cutter head;

[0040] Step 2: Start the motor, the motor synchronously drives the cylindrical gear 2 to rotate counterclockwise, and at the same time drives the second steering gear 32 and the rotating toothed disc 42 to rotate clockwise, the second steering gear 32 and the screw toothed disc 43 are meshed, that is, the screw toothed disc 43 is driven to rotate counterclockwise, and the rotating toothed disc 42 moves relatively quickly toward the direction of the mounting plate 14 under the reverse rotation of the screw toothed disc 43. At the same time, the mounting table cooperates with the sliding and lifting of the screw 41 to relatively quickly process the size of the shallow keyway on the cylindrical surface on the shaft. At this time, the rotating toothed disc 42 is meshed with the one-way ratchet 52, and the one-way ratchet 52 rotates with the rotating toothed disc 42, and the one-way ratchet 52 will not drive the linkage rotating rod 5 to rotate;

[0041] Step 3: The motor rotates in the opposite direction, driving the cylindrical gear 2 to rotate clockwise. At this time, the rotating toothed disc 42 rotates counterclockwise, and the screw toothed disc 43 is stationary. The mounting platform cooperates with the sliding and lifting of the screw 41. The screw 41 is pushed by the rotating toothed disc 42 and returns relatively slowly to the original path, thereby improving its processing accuracy. At the same time, the rotating toothed disc 42 is meshed with the one-way ratchet 52, driving the one-way ratchet 52 and the linkage gear 51 to rotate clockwise. At this time, the linkage gear 51 is meshed with the steering gear of the steering plate 3, driving the steering plate 3 to rotate counterclockwise until the fourth steering gear 34 is meshed with the screw toothed disc 43. At this time, the rotating toothed disc 42 and the screw toothed disc 43 rotate counterclockwise. Since the rotation speed of the rotating toothed disc 42 is less than that of the screw toothed disc 43, the movement speed of the screw 41 is further slowed down, thereby further improving its processing accuracy.

[0042] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0043] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shaft keyway processing device, comprising a housing (1), a mounting plate (14) being mounted on the housing (1), characterized in that: A rotatable cylindrical gear (2) is installed between the housings (1); A rotating rod consisting of a rotating rod (4) and a screw rod (41) is installed between the mounting plate (14) and the housing (1), the end of the screw rod (41) is connected to the slider (12) and the processing cutter head (13) in sequence, the rotating rod (4) is fixedly sleeved with a rotating toothed disc (42) meshing with the cylindrical gear (2), the screw rod (41) is sleeved with a screw toothed disc (43), a rotating column (44) is fixedly connected to the screw toothed disc (43) and is rotatably installed on the side wall of the housing (1), and the rotating column (44) is threadedly connected to the screw rod (41); A steering unit for changing the direction of the screw gear disc (43) is sleeved on the cylindrical gear (2); The steering unit comprises a steering plate (3) movably sleeved on the rotating shaft of the cylindrical gear (2) and a first steering gear (31) fixedly sleeved on the rotating shaft of the cylindrical gear (2); a second steering gear (32) and a third steering gear (33) meshing with the first steering gear (31) are also mounted on the steering plate (3); and a fourth steering gear (34) meshing with the third steering gear (33) is also mounted on the steering plate (3); The first steering gear (31), the third steering gear (33), and the fourth steering gear (34) have the same gear radius, the cylindrical gear (2), the rotating toothed disc (42), and the screw toothed disc (43) have the same radius, and the radius of the first steering gear (31) is smaller than the radius of the cylindrical gear (2); The bottom of the steering unit is an arc-shaped structure, and a steering gear for driving the steering unit to rotate is installed on the arc-shaped surface; A linkage rotating rod (5) for driving the steering gear is also connected between the mounting plate (14) and the housing (1), and a linkage gear (51) and a one-way ratchet (52) are fixedly sleeved on the linkage rotating rod (5).

2. A shaft keyway processing device as claimed in claim 1, characterized in that: The linkage gear (51) meshes with the steering gear of the steering plate (3); the length of the one-way ratchet (52) is greater than the length of the machined keyway; and the one-way ratchet (52) can mesh with the rotating toothed disc (42).

3. A shaft keyway processing device as claimed in claim 1, characterized in that: A belt pulley (21) is fixedly sleeved on the rotating shaft of the cylindrical gear (2), and the belt pulley (21) is driven by a motor.

4. A processing method, characterized in that: A shaft keyway processing device applicable to any one of claims 1 to 3, comprising: Step 1: Fix the shaft on the mounting table and position the area to be processed of the shaft and the cutter head (13); Step 2: Start the motor, the motor synchronously drives the cylindrical gear (2) to rotate counterclockwise, and at the same time drives the second steering gear (32) and the rotating toothed disc (42) to rotate clockwise, the second steering gear (32) and the screw toothed disc (43) are meshed, that is, the screw toothed disc (43) is driven to rotate counterclockwise, and the rotating toothed disc (42) moves relatively quickly in the direction of the mounting plate (14) under the reverse rotation of the screw toothed disc (43), at the same time, the mounting table cooperates with the sliding lifting of the screw (41), and the size of the shallow keyway can be processed on the cylindrical surface of the shaft relatively quickly, at this time, the rotating toothed disc (42) is meshed with the one-way ratchet (52), the one-way ratchet (52) rotates with the rotating toothed disc (42), and the one-way ratchet (52) will not drive the linkage rotating rod (5) to rotate; Step 3: The motor rotates in the reverse direction, driving the cylindrical gear (2) to rotate clockwise. At this time, the rotating toothed disc (42) rotates counterclockwise, and the screw toothed disc (43) is stationary. The mounting platform cooperates with the sliding and lifting of the screw (41). The screw (41) is pushed by the rotating toothed disc (42) and returns relatively slowly to the original path, thereby improving its processing accuracy. At the same time, the rotating toothed disc (42) meshes with the one-way ratchet (52), driving the one-way ratchet (52) and the linkage gear (51) to rotate clockwise. At this time, the linkage gear (51) meshes with the steering gear of the steering plate (3), driving the steering plate (3) to rotate counterclockwise until the fourth steering gear (34) meshes with the screw toothed disc (43). At this time, the rotating toothed disc (42) and the screw toothed disc (43) rotate counterclockwise. Since the rotation speed of the rotating toothed disc (42) is less than the rotation speed of the screw toothed disc (43), the movement speed of the screw (41) is further slowed down, thereby further improving its processing accuracy.

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