Coaxial double-helix adjusting mechanism

Abstract

The utility model discloses a coaxial double helix adjusting mechanism, relates to mechanical device technical field, including fixed seat, blade A, blade B, first adjusting subassembly and second adjusting subassembly, the fixed seat is rotatingly connected with the centre shaft, first adjusting subassembly is provided on the centre shaft and is used for simultaneously adjusting blade A and blade B position, second adjusting subassembly is used for adjusting blade A and blade B position. The second adjusting assembly is arranged on the first adjusting assembly and used for independently adjusting the position of the blade B. The hand wheel is rotated to drive the adjusting lead screw to adjust the positions of the cutter A and the cutter B at the same time, the adjusting sleeve is rotated to independently adjust the position of the cutter B, in this way, the hand wheel and the adjusting sleeve can be rotated to achieve the distance between the cutter A and the cutter B and any left-right position, the machining requirement is met, and the whole process is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical devices, and particularly relates to a coaxial double-helix adjusting mechanism. Background Art

[0002] In the currently common double-edge cutting devices, during use, it is often necessary to adjust the distance between two blades thereon and their positions on the drive shaft according to the requirements of the cutting length of the workpiece. However, in the prior art, the process of adjusting the two blades simultaneously or separately is time-consuming and laborious, and the efficiency is low. Summary of the Invention

[0003] The purpose of the utility model is to provide a coaxial double-helix adjusting mechanism to overcome the above-mentioned defects in the prior art.

[0004] A coaxial double-helix adjusting mechanism includes a fixed seat, blade A, blade B, a first adjusting component and a second adjusting component. A central shaft is rotatably connected to the fixed seat.

[0005] The first adjusting component is arranged on the central shaft and is used to adjust the positions of blade A and blade B simultaneously.

[0006] The second adjusting component is arranged on the first adjusting component and is used to adjust the position of blade B separately.

[0007] Preferably, the first adjusting component includes an inner sleeve and an adjusting lead screw. The inner sleeve is sleeved on the central shaft, and a connecting seat is arranged at its outer end. Blade A is sleeved on the central shaft and is connected to the inner sleeve. Blade A is slidably connected to a first chute on the central shaft. The adjusting lead screw is in screw connection with a lead screw nut in the central shaft and is rotatably connected to the inner sleeve and the connecting seat.

[0008] Preferably, the second adjusting component includes a middle sleeve and an adjusting sleeve. The middle sleeve is elastic and is sleeved on the inner sleeve. Blade B is sleeved on the inner sleeve and is connected to the middle sleeve. Blade B is slidably connected to a second chute on the inner sleeve. The adjusting sleeve is of a conical structure and is rotatably connected to the inner sleeve, and an internal thread threadedly connected to the external thread on the middle sleeve is arranged inside it.

[0009] Preferably, a hand wheel is arranged at the outer end of the adjusting lead screw.

[0010] Preferably, the connecting seat is connected to the inner sleeve through a plurality of bolts.

[0011] The beneficial effects achieved by the utility model are:

[0012] In this application, turning the handwheel drives the adjusting lead screw to adjust the positions of cutter A and cutter B simultaneously, and turning the adjusting sleeve adjusts the position of cutter B alone. In this way, the handwheel and the adjusting sleeve can be rotated to achieve the distance between cutter A and cutter B and any position on the left and right, meeting the processing requirements, and the whole process is relatively convenient. Description of the Drawings

[0013] Figure 1 It is a schematic structural view of the whole of the present utility model.

[0014] Figure 2 It is a top view of the whole of the present utility model.

[0015] Figure 3 is Figure 2 a sectional view taken along the A-A direction in

[0016] In the figure, 1, fixed seat; 2, central axis; 3, first adjusting component; 31, inner sleeve; 32, connecting seat; 33, first chute; 34, adjusting lead screw; 341, handwheel; 35, lead screw nut; 4, blade A; 5, blade B; 6, second adjusting component; 61, middle sleeve; 62, second chute; 63, adjusting sleeve. Specific Embodiments

[0017] The following is a more detailed description of the specific embodiments of the present utility model with reference to the drawings through the description of the embodiments, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the concept and technical solution of the present utility model.

[0018] As Figures 1 - 3 shown, the present utility model provides a coaxial double-helix adjusting mechanism, including a fixed seat 1, a blade A 4, a blade B 5, a first adjusting component 3 and a second adjusting component 6. A central axis 2 is rotatably connected to the fixed seat 1. The first adjusting component 3 is arranged on the central axis 2 and is used to adjust the positions of the blade A 4 and the blade B 5 simultaneously. The second adjusting component 6 is arranged on the first adjusting component 3 and is used to adjust the position of the blade B 5 alone.

[0019] It should be noted that the first adjusting component 3 includes an inner sleeve 31 and an adjusting lead screw 34. The inner sleeve 31 is sleeved on the central axis 2 and a connecting seat 32 is arranged at its outer end. The connecting seat 32 is connected to the inner sleeve 31 through a plurality of bolts, so as to facilitate the disassembly and assembly of the connecting seat 32 and the inner sleeve 31. The blade A 4 is sleeved on the central axis 2 and is connected to the inner sleeve 31. The blade A 4 is slidably connected to the first chute 33 on the central axis 2. The adjusting lead screw 34 is in threaded connection with the lead screw nut 35 in the central axis 2 and is rotatably connected to the inner sleeve 31 and the connecting seat 32. A handwheel 341 is arranged at the outer end of the adjusting lead screw 34.

[0020] In addition, the second adjusting component 6 includes a middle sleeve 61 and an adjusting sleeve 63. The middle sleeve 61 is elastic and sleeved on the inner sleeve 31. The blade B5 is sleeved on the inner sleeve 31 and connected to the middle sleeve 61. The blade B5 is slidably connected to the sliding groove two 62 on the inner sleeve 31. The adjusting sleeve 63 is of a conical structure and is rotatably connected to the inner sleeve 31, and its interior is provided with an internal thread that is threadedly connected to the external thread on the middle sleeve 61.

[0021] Specific implementation manners and principles:

[0022] During use, driving the central shaft 2 to rotate drives the cutter A and the cutter B to rotate coaxially, and cutting work can be carried out;

[0023] When the handwheel 341 is rotated, the cutter A4 and the cutter B5 are driven by the adjusting screw rod 34 to move left or right simultaneously on the central shaft 2;

[0024] When the adjusting sleeve 63 is rotated, the middle sleeve 61 and the cutter B are driven to move left or right by the rotation of the internal thread of the adjusting sleeve 63;

[0025] In summary, in this application, rotating the handwheel 341 drives the adjusting screw rod 34 to simultaneously adjust the positions of the cutter A and the cutter B, and rotating the adjusting sleeve 63 separately adjusts the position of the cutter B. In this way, the handwheel 341 and the adjusting sleeve 63 can be rotated to achieve the distance between the cutter A and the cutter B and any left or right position, meeting the processing requirements.

[0026] The above-described embodiments of the present utility model do not constitute a limitation to the protection scope of the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the claims of the present utility model.

Claims

1. A coaxial double helix adjustment mechanism, characterized in that: It includes a fixed seat (1), blade A (4), blade B (5), a first adjusting component (3) and a second adjusting component (6). A central shaft (2) is rotatably connected to the fixed seat (1). The first adjusting component (3) is arranged on the central shaft (2) and is used to adjust the positions of blade A (4) and blade B (5) simultaneously. The second adjusting component (6) is arranged on the first adjusting component (3) and is used to adjust the position of blade B (5) independently.

2. The coaxial double helix adjusting mechanism according to claim 1, wherein: The first adjusting component (3) includes an inner sleeve (31) and an adjusting screw rod (34). The inner sleeve (31) is sleeved on the central shaft (2), and a connecting seat (32) is arranged at its outer end. Blade A (4) is sleeved on the central shaft (2) and is connected to the inner sleeve (31). Blade A (4) is slidably connected to a first chute (33) on the central shaft (2). The adjusting screw rod (34) is helically connected to a screw nut (35) inside the central shaft (2) and is rotatably connected to the inner sleeve (31) and the connecting seat (32).

3. The coaxial double helix adjusting mechanism according to claim 1, characterized in that: The second adjusting component (6) includes a middle sleeve (61) and an adjusting sleeve (63). The middle sleeve (61) is elastic and is sleeved on the inner sleeve (31). Blade B (5) is sleeved on the inner sleeve (31) and is connected to the middle sleeve (61). Blade B (5) is slidably connected to a second chute (62) on the inner sleeve (31). The adjusting sleeve (63) is of a conical structure and is rotatably connected to the inner sleeve (31), and an internal thread that is threadedly connected to an external thread on the middle sleeve (61) is arranged inside it.

4. A coaxial double helix adjustment mechanism according to claim 2, characterized in that: A handwheel (341) is arranged at the outer end of the adjusting screw rod (34).

5. The coaxial double-helix adjusting mechanism according to claim 2, wherein: The connecting seat (32) is connected to the inner sleeve (31) through a plurality of bolts.

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