Multi-depth type high-precision cutting knife

Abstract

The utility model belongs to the technical field of cutters, and particularly relates to a multi-depth type high-precision cutter which comprises a base, an outer cylinder is rotationally connected to the base, a cutter handle is coaxially connected to the inner side of the outer cylinder in a sliding mode, and a cutting blade is arranged on a cutter holder fixed to the lower end of the cutter handle. A power assembly used for driving the tool apron to rotate and stretch out and draw back is installed on the base. The cutter handle is connected to the inner side of the outer cylinder in a sliding mode, when the operation depth of the cutter holder needs to be adjusted, the motor is controlled to rotate in the forward direction, then the driving wheel, the driven wheel and the screw rod are made to rotate through the relation of the one-way bearing B and the one-way bearing C, and then the rotating screw rod drives the cutter handle and the cutter holder to move; and the driving gear, the driven gear and the outer cylinder are made to rotate through the relation of the one-way bearing A, operation of the cutting blade is achieved, and the problem that at the present stage, the operation depth of the cutting blade cannot be adjusted is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting knives, in particular to a multiple-depth high-precision cutting knife. Background Art

[0002] A cutting knife is a mechanical processing tool. The cutting knife is driven by a motor to cut off unnecessary burrs and excess parts of the pipe mouth, so as to facilitate subsequent welding and expansion hole processing. It is widely used. After searching, the patent number CN201721485680.6 discloses a deep cutting tool. This solution installs two blades by avoiding and changing the tool rod structure, and performs deep cutting at the same time, which shortens the processing time. However, the application scheme has the following shortcomings when used: First, the telescopic length of the cutting knife (that is, the working depth) cannot be adjusted, but the tool has to face different processing environments in actual use, and often needs to process pipe mouths of different depths. The length of the cutting knife is too long, which is not conducive to operation, and too short is not conducive to deep processing of pipe fittings and parts. Therefore, the current cutting knife has certain disadvantages when used, and the working depth of the cutting knife cannot be adjusted according to demand, and needs to be improved. Utility Model Content

[0003] (1) Technical problems solved

[0004] In response to the shortcomings of the existing technology, the utility model provides a multi-depth high-precision cutting knife. By sliding the knife handle to the inner side of the outer cylinder, when the working depth of the knife seat needs to be adjusted, the motor is controlled to rotate in the forward direction, and then the driving wheel, the driven wheel and the screw are rotated through the relationship between the one-way bearing B and the one-way bearing C, and then the knife handle and the knife seat are driven to move through the rotating screw. When cutting operation is required, the motor is controlled to rotate in the reverse direction, and the driving gear, the driven gear and the outer cylinder are rotated through the relationship between the one-way bearing A to realize the operation of the cutting blade, thereby solving the problem that the current cutting knife cannot adjust the working depth.

[0005] (2) Technical solution

[0006] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0007] A multiple-depth high-precision cutting tool comprises a base, an outer cylinder is rotatably connected to the base, and a tool holder is coaxially slidably connected to the inner side of the outer cylinder, a cutting blade is provided on the tool holder fixed at the lower end of the tool holder, and a power assembly for driving the tool holder to rotate and extend is installed on the base, the power assembly comprises: a rotating shaft, rotatably connected to the base, and a one-way bearing A and a one-way bearing B are coaxially fixed on the rotating shaft; a driving gear, fixed on the one-way bearing A, and a driven gear is fixedly connected to the outer cylinder, and a tooth chain is provided between the driven gear and the driving gear; a driving wheel, fixed on the outer wall of the one-way bearing B; and also includes a screw, which is coaxially rotatably connected to the outer cylinder, and a screw hole adapted to the screw is provided at the axis of the tool holder corresponding to the screw, a driven wheel is provided at the top of the screw, and a synchronous belt is provided between the driven wheel and the driving wheel.

[0008] Furthermore, a one-way bearing C is provided at the connection between the top of the screw and the driven wheel.

[0009] Furthermore, a sliding groove is provided on the outer wall of the knife handle along the length direction of the knife handle, and the sliding groove is adapted to the corresponding limiting protrusion provided on the outer cylinder.

[0010] Furthermore, a motor is mounted on the base, and an output shaft of the motor is coaxially connected and fixed to one end of the rotating shaft.

[0011] Furthermore, the cutting blade is fixed to the blade seat by means of bolts.

[0012] (3) Beneficial effects

[0013] Compared with the prior art, the present invention provides a multi-depth high-precision cutting tool with the following advantages:

[0014] The utility model provides an outer cylinder to connect the tool handle in a sliding manner in the outer cylinder. The tool handle is circular in design, and a slide groove is provided on the outer wall of the tool handle. The slide groove is adapted to the limiting protrusion provided on the outer cylinder to play a limiting role. The utility model can adjust the operating depth of the tool handle, the tool holder and the cutting blade according to the needs, thereby meeting the processing requirements of different mechanical parts and workpieces. When the operating depth of the tool holder needs to be adjusted, the motor can be controlled to rotate forward. At this time, the relationship between the one-way bearing B and the one-way bearing C is used to make the synchronous belt and the driven wheel rotate (the one-way bearing A rotates by itself during this process, so the driving gear does not rotate), so that the screw rotates and the screw thread connection On the screw hole at the center of the tool holder, when the screw rotates, the tool holder can be extended and retracted, controlling the movement of the tool holder and cutting blade, and then adjusting the operating depth of the tool holder and cutting blade. When the workpiece needs to be cut, the motor is controlled in reverse, and then the driving gear is rotated through the relationship of the one-way bearing A (at this time, the one-way bearing B rotates by itself, so the driving wheel does not rotate), and then the driven gear and the outer cylinder are rotated. The tool holder, tool holder and cutting blade are rotated through the limiting relationship of the limiting protrusion to realize the cutting operation of the workpiece. This method can meet the processing requirements of workpiece openings and pipe openings of different depths, greatly improving the convenience and functionality of the cutting tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a front perspective view of the outer cylinder and the handle of the utility model;

[0017] Figure 3 This is a bottom perspective view of the outer cylinder and the handle of the utility model;

[0018] Figure 4 It is a structural diagram of the power component in this utility model.

[0019] In the figure: 1. Base; 2. Outer cylinder; 3. Tool handle; 4. Tool holder; 5. Cutting blade; 6. Power assembly; 601. Rotating shaft; 602. One-way bearing A; 603. Driving gear; 604. One-way bearing B; 605. Driving pulley; 606. Synchronous belt; 607. Driven pulley; 608. One-way bearing C; 609. Driven gear; 6010. Tooth chain; 6011. Motor; 7. Slide; 8. Screw; 9. Limiting protrusion. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0021] Example

[0022] like Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a multi-depth high-precision cutting tool proposed in one embodiment of the present invention includes a base 1, an outer cylinder 2 is rotatably connected to the base 1, and a tool handle 3 is coaxially slidably connected to the inner side of the outer cylinder 2, a cutting blade 5 is provided on a tool holder 4 fixed at the lower end of the tool holder 3, and a power component 6 for driving the tool holder 4 to rotate and retract is installed on the base 1, and the power component 6 includes: a rotating shaft 601, which is rotatably connected to the base 1, and a one-way bearing A602 and a one-way bearing B604 are coaxially fixed on the rotating shaft 601; an active Gear 603 is fixed on the one-way bearing A602, and a driven gear 609 is fixedly connected to the outer cylinder 2, and a tooth chain 6010 is arranged between the driven gear 609 and the driving gear 603; the driving wheel 605 is fixed on the outer wall of the one-way bearing B604; it also includes a screw rod 8, the screw rod 8 is coaxially connected to the outer cylinder 2, and the axis of the tool handle 3 corresponds to the screw rod 8 and is provided with a screw hole adapted to the screw rod 8, a driven wheel 607 is arranged on the top of the screw rod 8, and a synchronous belt 606 is arranged between the driven wheel 607 and the driving wheel 605.

[0023] It should be noted that the base 1 is the mounting part of the entire tool. By rotating the outer cylinder 2 connected on the base 1, the tool handle 3 is slidably connected to the inner side of the outer cylinder 2 and can be telescopically moved, thereby driving the tool holder 4 and the cutting blade 5 to move, adjusting the working depth of the tool holder 4 and the cutting blade 5, and then meeting the processing requirements of holes of different depths. By installing a power component 6 on the base 1, the power component 6 can control the rotation and telescopic movement of the tool holder 4. The power component 6 is mainly composed of a rotating shaft 601, a one-way bearing A602, a driving gear 603, a one-way bearing B604, a driving wheel 605, a synchronous belt 606, a driven wheel 607, etc., and the screw rod 8 is coaxially rotated on the outer cylinder 2, and the screw rod 8 is threadedly connected to the screw hole corresponding to the tool handle 3. The tool holder needs to be adjusted. 4. When the working depth of the cutting blade 5 is reached, the rotating shaft 601 is rotated in the forward direction, and then the driving wheel 605 is rotated through the relationship of the one-way bearing B604. At this time, the driving gear 603 does not rotate, and the driven wheel 607 is controlled to rotate through the synchronous belt 606 to realize the rotation drive of the screw 8, and then the extension and retraction of the tool holder 3 is controlled to adjust the working depth of the tool holder 4 and the cutting blade 5; when cutting operation is required, the rotating shaft 601 is rotated in the reverse direction, and then the driving gear 603 is rotated through the relationship of the one-way bearing A602. At this time, the driving wheel 605 does not rotate, and the rotation drive of the driven gear 609 is realized, and then the outer cylinder 2 is driven to rotate, and the tool holder 4 is rotated through the limiting relationship between the outer cylinder 2 and the tool holder 3 to realize the cutting operation of the workpiece.

[0024] like Figure 1 、 Figure 2 and Figure 4 As shown, in some embodiments, a one-way bearing C608 is provided at the connection between the top of the screw 8 and the driven wheel 607.

[0025] It should be noted that the setting of the one-way bearing C608 can enable the driven wheel 607 to rotate in one direction. When the driven gear 609 rotates to drive the outer cylinder 2 to rotate, and then the tool holder 4 and the cutting blade 5 rotate, the tool handle 3 rotates at this time, and the screw 8 rotates through the threaded fitting relationship. When the screw 8 rotates, the one-way bearing C608 rotates by itself and will not transmit the rotation effect to the driven wheel 607.

[0026] like Figure 3 As shown, in some embodiments, a sliding groove 7 is provided on the outer wall of the handle 3 along the length direction of the handle 3 , and the sliding groove 7 is adapted to the corresponding limiting protrusion 9 provided on the outer tube 2 .

[0027] It should be noted that the arrangement of the sliding groove 7 and the limiting protrusion 9 can play a limiting role.

[0028] like Figure 4As shown, in some embodiments, a motor 6011 is installed on the base 1, and the output shaft of the motor 6011 is coaxially connected and fixed to one end of the rotating shaft 601, thereby realizing the rotation drive of the rotating shaft 601.

[0029] like Figure 1 As shown, in some embodiments, the cutting blade 5 is fixed to the blade seat 4 by means of bolts, so that the cutting blade 5 is firmly installed.

[0030] like Figure 4 As shown, it should also be noted that a removable locking member is provided between the rotating shaft 601 and the driving wheel 605, as well as between the driven wheel 607 and the screw 8. The locking member is assembled on the relevant structure in a removable screw manner. When it is necessary to control the reverse extension and retraction of the tool holder 4 and the cutting blade 5, the motor 6011 is controlled in reverse to drive the driving gear 603 to rotate. At this time, the driving wheel 605, the driven wheel 607 and the screw 8 are rotated through the relationship of the locking member to realize the rotation drive of the screw 8, and then the reverse extension and retraction of the tool holder 4 and the cutting blade 5 is realized, the working depth of the cutting blade 5 is reversely adjusted, and the telescopic adjustment of the cutting blade 5 in two directions is realized.

[0031] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-depth high-precision cutting tool, comprising a base (1), characterized in that: The base (1) is rotatably connected to an outer cylinder (2), and a tool holder (3) is coaxially slidably connected to the inner side of the outer cylinder (2). A cutting blade (5) is provided on a tool holder (4) fixed at the lower end of the tool holder (3). A power assembly (6) for driving the tool holder (4) to rotate and extend is installed on the base (1), and the power assembly (6) includes: A rotating shaft (601) is rotatably connected to the base (1), and a one-way bearing A (602) and a one-way bearing B (604) are coaxially fixed on the rotating shaft (601); The driving gear (603) is fixed on the one-way bearing A (602), and the outer cylinder (2) is fixedly connected with a driven gear (609), and a tooth chain (6010) is provided between the driven gear (609) and the driving gear (603); A driving wheel (605) is fixed on the outer wall of the one-way bearing B (604); The utility model further comprises a screw (8), wherein the screw (8) is coaxially connected to the outer cylinder (2), and a screw hole adapted to the screw (8) is provided at the axis of the tool handle (3) corresponding to the screw (8), a driven wheel (607) is provided at the top of the screw (8), and a synchronous belt (606) is provided between the driven wheel (607) and the driving wheel (605).

2. The multi-depth high-precision cutting tool according to claim 1, characterized in that: A one-way bearing C (608) is provided at the connection between the top of the screw (8) and the driven wheel (607).

3. The multi-depth high-precision cutting tool according to claim 1, characterized in that: A sliding groove (7) is provided on the outer wall of the knife handle (3) along the length direction of the knife handle (3), and the sliding groove (7) is adapted to a corresponding limiting protrusion (9) provided on the outer cylinder (2).

4. The multi-depth high-precision cutting tool according to claim 1, characterized in that: A motor (6011) is mounted on the base (1), and an output shaft of the motor (6011) is coaxially connected and fixed to one end of the rotating shaft (601).

5. The multi-depth high-precision cutting tool according to claim 1, characterized in that: The cutting blade (5) is fixed to the blade seat (4) by means of bolts.

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