A circular cutting tool

Abstract

The utility model discloses a kind of circular cutting tools, it includes adsorption rotating mechanism and cutting adjustment mechanism;Adsorption rotating mechanism includes screw rod suction disc, inner flange, ball bearing, outer flange, locking screw;The screw rod of screw rod suction disc is connected with the lower end of inner flange by thread;The upper end of inner flange is connected with the inner ring of ball bearing;The outer ring of ball bearing is connected with the lower end of outer flange;Outer flange is equipped with transverse through-hole and vertical threaded hole, and vertical threaded hole is communicated with transverse through-hole;Locking screw is locked the horizontal bar of cutting adjustment mechanism by vertical threaded hole;Cutting adjustment mechanism includes the horizontal bar of scale bar, blade, blade locking part;One end of horizontal bar passes through the transverse through-hole on outer flange;The other end of horizontal bar, the zero scale line of scale bar is equipped with slit;Blade is placed in slit, can move up and down in slit;The blade locking part is placed on horizontal bar, can lock blade.The utility model can efficiently cut out regular circular material.

Description

Technical Field

[0001] This utility model belongs to the field of cutting technology, specifically relating to a circular cutting tool. Background Technology

[0002] During product manufacturing and debugging, it is sometimes necessary to cut circular materials of different diameters according to actual conditions. Currently, the common method for cutting circular materials is to first draw a circular pattern and then cut out the circular material with scissors. This method produces irregular circular patterns and is inefficient. Therefore, we urgently need a new cutting tool. Utility Model Content

[0003] The main purpose of this utility model is to provide a circular cutting tool that can efficiently cut out regular circular materials.

[0004] The technical solution adopted in this utility model is: A circular cutting tool includes an adsorption and rotation mechanism and a cutting adjustment mechanism; The adsorption and rotation mechanism includes a screw suction cup, an inner flange, a ball bearing, an outer flange, and a locking screw. The screw of the screw suction cup is threaded to the lower end of the inner flange. The upper end of the inner flange is connected to the inner ring of the ball bearing. The outer ring of the ball bearing is connected to the lower end of the outer flange. The outer flange has a transverse through hole and a vertical threaded hole, and the vertical threaded hole is connected to the transverse through hole. The transverse through hole is used to place the crossbar of the cutting and adjusting mechanism, and the vertical threaded hole is used to install the locking screw. The locking screw locks the crossbar of the cutting and adjusting mechanism through the vertical threaded hole, and the locking screw is used to fasten the crossbar of the cutting and adjusting mechanism. The cutting and adjusting mechanism includes a horizontal bar with a scale, a blade, and a blade locking part; one end of the horizontal bar passes through a transverse through hole on the outer flange, and the horizontal bar can move within the transverse through hole; on the other end of the horizontal bar, a slit for placing the blade is provided at the zero mark of the scale; the blade is placed in the slit and can move up and down within the slit, thereby adjusting the blade height; the blade locking part is placed on the horizontal bar and can lock the blade.

[0005] Preferably, the scale is a millimeter scale to precisely control the diameter of the cut circle.

[0006] Preferably, the lower end of the inner flange is provided with an internal thread, which is adapted to the external thread on the screw of the screw suction cup to facilitate installation and make the structure more stable.

[0007] Preferably, the upper end of the inner flange is connected to the inner ring of the ball bearing via an interference fit; the lower end of the outer flange is connected to the outer ring of the ball bearing via an interference fit, so as to make the structure more stable and reliable.

[0008] Preferably, the transverse through hole on the outer flange is fitted with a small clearance to facilitate control of cutting accuracy.

[0009] Preferably, the blade locking part includes a hand-tightening screw and a transverse threaded hole communicating with the slit on the other end of the crossbar, the transverse threaded hole being used to install the hand-tightening screw; the hand-tightening screw locks the blade through the transverse threaded hole.

[0010] Preferably, the nut of the hand-tightening screw is elongated to facilitate hand-tightening of the locking blade.

[0011] Preferably, the screw suction cup adheres to the material being cut, so as to control the radius of the cut circle and cut out a more regular circle.

[0012] Preferably, the nut of the locking screw is elongated to facilitate hand-tightening of the crossbar.

[0013] Preferably, the outer flange is provided with a transparent window, which allows the scale on the ruler inside the transverse through hole to be seen; a marking line is provided on the transparent window, which coincides with the central axis of the adsorption rotation mechanism, so as to determine the radius of the circle more accurately and conveniently, thereby cutting out a more regular circle.

[0014] In this invention, the screw suction cup and the blade are universal parts, so as to facilitate replacement when worn out.

[0015] In use, the entire circular cutting tool is fixed to the material to be cut by the screw suction cup; the distance between the blade and the outer flange is adjusted by moving the crossbar laterally; when the required circular radius is reached, the crossbar is stopped and locked by the locking screw; the blade is moved down so that the lower end of the blade passes through the material to be cut; the crossbar is rotated, which in turn drives the blade to move, thus achieving circular cutting of the material.

[0016] The beneficial effects of this utility model are as follows: By incorporating a screw suction cup, inner flange, ball bearing, outer flange, crossbar with scale, and blade, the drawing and cutting processes can be completed simultaneously, improving the convenience and efficiency of cutting circular materials. By setting up a screw suction cup, a horizontal bar with a scale, etc., regular circular materials can be cut out; The crossbar can move within the transverse through hole, thus facilitating the adjustment of the radius of the shearing circle according to actual needs; the blade can move within the slit to accommodate the shearing of circular materials of different thicknesses. It has a simple structure, is easy to operate, and has value for widespread use. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the circular cutting tool in Example 1; Figure 2 This is a cross-sectional view of the circular cutting tool; Figure 3 This is a cross-sectional view of the adsorption rotation mechanism; Figure 4 This is a schematic diagram of the circular cutting tool in Example 2; In the diagram: 10, screw suction cup; 20, inner flange; 30, ball bearing; 40, outer flange; 50, locking screw; 60, crossbar; 70, blade; 80, hand screw; 90, transparent window; 100, marking line; 11. External thread; 21. Internal thread; 41. Transverse through hole; 42. Vertical threaded hole; 61. Slit; 62. Transverse threaded hole; 63. Scale. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0020] Example 1 See Figures 1-3 A circular cutting tool, comprising an adsorption and rotation mechanism and a cutting adjustment mechanism; The adsorption and rotation mechanism includes a screw suction cup 10, an inner flange 20, a ball bearing 30, an outer flange 40, and a locking screw 50. The screw of the screw suction cup 10 has an external thread 11, and the lower end of the inner flange 20 has an internal thread 21, which connects to the external thread 11 of the screw suction cup 10 via the internal thread 21. The upper end of the inner flange 20 is connected to the inner ring of the ball bearing 30 via an interference fit, and the outer ring of the ball bearing 30 is connected to the lower end of the outer flange 40 via an interference fit. The outer flange 40 has a transverse through hole 41 and a vertical threaded hole 42, with the vertical threaded hole 42 communicating with the transverse through hole 41. The transverse through hole 41 is used to house the crossbar 60 of the cutting and adjusting mechanism, and the transverse through hole 41 and the crossbar 60 have a small clearance fit. The vertical threaded hole 42 is used to install the locking screw 50. The locking screw 50 locks the crossbar 60 of the cutting and adjusting mechanism through the vertical threaded hole 42. For ease of operation, the nut of the locking screw 50 can be designed as a long strip.

[0021] The cutting and adjusting mechanism includes a crossbar 60 with a scale 63, a blade 70, and a hand-tightening screw 80. The scale 63 is a millimeter scale for precise control of the cutting circle's diameter. One end of the crossbar 60 passes through a transverse through-hole 41 on the outer flange 40, and the crossbar 60 can move within the transverse through-hole 41. At the zero mark of the scale 63 on the other end of the crossbar 60, a slit 61 is provided for placing the blade 70. The blade 70 is placed within the slit 61 and can move up and down within it to adjust its height. A transverse threaded hole 62 communicating with the slit 61 is provided at the other end of the crossbar 60, for installing the hand-tightening screw 80. The hand-tightening screw 80 locks the blade through the transverse threaded hole 62. For ease of operation, the nut of the hand-tightening screw 80 can be designed as a long strip.

[0022] In use, loosen the locking screw 50 and adjust the distance between the blade 70 and the outer flange 40 by moving the crossbar 60 laterally. When the desired circular radius is reached (the circular radius can be determined by the distance between the zero mark of the scale 63 on the crossbar 60 and the left end face of the transverse through hole 41 in the middle of the outer flange 40, i.e.: circular radius = scale value corresponding to the left end face of the transverse through hole 41 + distance from the left end face of the transverse through hole 41 to the central axis of the outer flange, or by offsetting the scale 63 when making the scale 63, the offset amount being the distance from the left end face of the transverse through hole 41 to the central axis of the outer flange, at which point the circular radius = scale value corresponding to the left end face of the transverse through hole 41), stop moving the crossbar 60 and lock the crossbar 60 with the locking screw 50. Use the screw suction cup 10 to attach the entire circular cutting tool to the material to be cut; loosen the handle screw 80, move the blade 70 down so that the lower end of the blade 70 passes through the material to be cut, and then tighten the handle screw 80. Rotate the crossbar 60, which in turn moves the blade 70 to achieve circular cutting of the material (hold the outer flange 40 with one hand and the end of the crossbar 60 near the blade 70 with the other hand, and push the crossbar 60 along the cutting edge of the blade 70 to cut out the required circular pattern).

[0023] Example 2 Unlike Example 1: See Figure 4 A transparent window 90 is provided on the outer flange 40, through which the scale on the ruler 63 inside the transverse through-hole 41 can be viewed. A marking line 100 is provided on the transparent window 90, which coincides with the central axis of the adsorption rotation mechanism, to more accurately and conveniently determine the radius of the circle, thereby cutting out a more regular circle. The radius of the circle can be determined by the scale on the ruler 63 corresponding to the marking line 100 on the transparent window 90.

[0024] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0025] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A circular cutting tool, characterized in that: Includes an adsorption and rotation mechanism and a cutting and adjustment mechanism; The adsorption and rotation mechanism includes a screw suction cup, an inner flange, a ball bearing, an outer flange, and a locking screw. The screw of the screw suction cup is connected to the lower end of the inner flange via a thread. The upper end of the inner flange is connected to the inner ring of the ball bearing. The outer ring of the ball bearing is connected to the lower end of the outer flange. The outer flange is provided with a transverse through hole and a vertical threaded hole, and the vertical threaded hole is connected to the transverse through hole. The locking screw locks the crossbar of the cutting and adjusting mechanism through the vertical threaded hole. The cutting and adjusting mechanism includes a horizontal bar with a scale, a blade, and a blade locking part; one end of the horizontal bar passes through a transverse through hole on the outer flange; a slit is provided at the zero mark of the scale on the other end of the horizontal bar; the blade is placed in the slit and can move up and down within the slit; the blade locking part is placed on the horizontal bar and can lock the blade.

2. The circular cutting tool according to claim 1, characterized in that: The ruler is a millimeter ruler.

3. The circular cutting tool according to claim 1, characterized in that: The lower end of the inner flange is provided with an internal thread, which is compatible with the external thread on the screw of the screw suction cup.

4. The circular cutting tool according to claim 1 or 3, characterized in that: The upper end of the inner flange is connected to the inner ring of the ball bearing via an interference fit; the lower end of the outer flange is connected to the outer ring of the ball bearing via an interference fit.

5. The circular cutting tool according to claim 1, characterized in that: The transverse through hole on the outer flange has a small clearance fit with the crossbar.

6. The circular cutting tool according to claim 1, characterized in that: The blade locking part includes a hand-tightening screw and a transverse threaded hole communicating with a slit on the other end of the crossbar; the hand-tightening screw locks the blade through the transverse threaded hole.

7. The circular cutting tool according to claim 6, characterized in that: The nut of the hand-tightening screw is elongated.

8. The circular cutting tool according to claim 1, characterized in that: The screw suction cup adheres to the sheared material.

9. The circular cutting tool according to claim 1, characterized in that: The nut of the locking screw is elongated.

10. The circular cutting tool according to claim 1, characterized in that: The outer flange is provided with a transparent window, through which the scale on the ruler inside the transverse through hole can be seen; a marking line is provided on the transparent window, which coincides with the central axis of the adsorption rotation mechanism.

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