Circular saw blade sawing machine based on micro-groove self-lubricating structure

Abstract

The invention relates to the technical field of sawing machines, and discloses a circular saw web sawing machine based on a micro-groove self-lubricating structure, which comprises a placing part, the placing part comprises a workbench, the workbench is fixedly connected with a driving unit through an adjusting frame arranged at the bottom of the workbench, the output end of the driving unit is fixedly connected with a main shaft, and an oil supply piece is arranged in the adjusting frame; the cutting part comprises a cutting saw blade, the cutting saw blade is connected with the main shaft through a fixing piece arranged on the outer side of the cutting saw blade, the oil supply piece comprises a fixing frame, and the fixing frame is fixedly connected into the adjusting frame. The circular saw blade sawing machine based on the micro-groove self-lubricating structure can effectively solve the problems that in the prior art, the lubricating mode of a circular saw blade sawing machine mainly depends on an external lubricating system, a lubricating agent is conveyed to a cutting area in a manual or mechanical mode, due to the fact that the external lubricating system is mainly adjusted manually, excessive oil injection or insufficient oil supply can occur, and the cutting efficiency is high. And the lubricating effect is not stable.

Description

Technical Field

[0001] The present invention relates to the technical field of sawing machines, and particularly relates to a circular saw blade sawing machine based on a micro-groove self-lubricating structure. Background Art

[0002] A circular saw blade sawing machine is a machine tool device that uses a circular saw blade as a cutting tool for cutting materials such as metals and woods, and is widely used in industries such as mechanical manufacturing, metal processing, and woodworking. With its efficient and flexible characteristics, the circular saw blade sawing machine has become the core equipment for metal and wood processing.

[0003] In order to reduce the contact friction and wear between the circular saw blade and the workpiece, lubricating oil is generally applied to the surface of the circular saw blade, which can avoid the chipping of the saw teeth or the wear of the substrate caused by the direct contact between the saw blade and the workpiece. The lubrication method of the circular saw blade sawing machine mainly relies on an external lubrication system, and the lubricant is transported to the cutting area manually or mechanically. Since the external lubrication system is mainly adjusted manually, there will be overspray or insufficient oil supply, resulting in unstable lubrication effect. Summary of the Invention

[0004] Technical Problems to be Solved

[0005] In view of the above-mentioned drawbacks of the prior art, the present invention provides a circular saw blade sawing machine based on a micro-groove self-lubricating structure, which can effectively solve the problem in the prior art that the lubrication method of the circular saw blade sawing machine mainly relies on an external lubrication system, and the lubricant is transported to the cutting area manually or mechanically. Since the external lubrication system is mainly adjusted manually, there will be overspray or insufficient oil supply, resulting in unstable lubrication effect.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] The present invention provides a circular saw blade sawing machine based on a micro-groove self-lubricating structure, comprising:

[0008] A placing part, the placing part includes a workbench, the workbench is fixedly connected with a driving unit through an adjusting frame arranged at its bottom, the output end of the driving unit is fixedly connected with a main shaft, and an oil supply member is arranged inside the adjusting frame;

[0009] A cutting part, the cutting part includes a cutting saw blade, and the cutting saw blade is connected with the main shaft through a fixing member arranged on its outer side;

[0010] Among them, the oil supply part includes a fixing frame, which is fixedly connected inside the adjusting frame. The fixing frame is rotatably connected with a fixing seat that is rotatably connected to the outer surface of the main shaft through an annular groove provided on its outer circumferential surface. Inside the fixing seat, there is a fixed connection with an oil box that can be used to store lubricating oil. The outer circumferential surface of the oil box is fixedly communicated with an oil outlet pipe, and the fixing seat is fixedly connected with a guide oil pipe communicated with the oil outlet pipe through an annular frame provided on its outer circumferential surface.

[0011] Further, oil grooves are provided on both sides of the cutting saw blade, and there are multiple such oil grooves, which are distributed in a circumferential array along the center of the cutting saw blade. The oil grooves on both sides of the cutting saw blade are alternately distributed.

[0012] Further, the guide oil pipe includes a flexible pipe and a rigid pipe. The side of the flexible pipe away from the rigid pipe is fixedly connected with a movable pipe that slides on the outer circumferential surface of the oil outlet pipe, and a counterweight ring is fixedly connected to the outer circumferential surface of the movable pipe. The movable pipe is connected to the outer circumferential surface of the oil box through a return spring provided on its side close to the oil outlet pipe. Inside the movable pipe, there is a fixed connection with a magnetic frame, and a sealing plug that fits the inner wall of the oil outlet pipe is fixedly connected inside the magnetic frame. There is a magnetic connection between the side of the oil outlet pipe close to the movable pipe and the magnetic frame.

[0013] Further, the fixing part includes mounting plates. There are two mounting plates, which are symmetrically distributed left and right along the cutting saw blade. In the space enclosed by the two mounting plates, there are positioning columns that penetrate the surface of the cutting saw blade, and there are multiple such positioning columns, which are distributed in a circumferential array along the center of the mounting plates. The mounting plate close to the fixing frame is fixedly connected to the outer circumferential surface of the main shaft, and the mounting plate away from the fixing frame is detachably mounted on the end of the main shaft through a locking nut provided on its outer side.

[0014] Further, annular oil cavities are provided inside both of the two mounting plates, and the two annular oil cavities are communicated with each other through a connecting pipe provided inside them. Micro holes communicated with the oil grooves are provided in the annular oil cavities, and there are multiple such micro holes, which are distributed in a circumferential array along the center of the annular oil cavities. A ring plate fixedly connected to the outer circumferential surface of the guide oil pipe is rotatably mounted on the surface of the mounting plate close to the fixing frame.

[0015] Further, a mounting seat that fits the outer circumferential surface of the main shaft is fixedly connected to the surface of the mounting plate close to the fixing frame. The mounting seat is rotatably connected with ratchet claws through pins provided on its outer circumferential surface, and there are multiple such ratchet claws, which are distributed in a circumferential array along the center of the mounting seat. A torsion spring is sleeved on the outer circumferential surface of the pin, and a ratchet wheel that fits the ratchet claws is fixedly connected to the fixing seat through a cavity provided inside it.

[0016] Further, an installation cavity is formed in the locking nut, and there are a plurality of such installation cavities which are distributed in a circumferential array along the main shaft. The installation cavity includes an upper horizontal groove, a vertical groove and a lower horizontal groove which are communicated with each other. A movable block is slidably connected in the upper horizontal groove, and a counterweight block is fixedly connected to the top end of the movable block. The counterweight block is connected to the inner wall of the upper horizontal groove through a return spring arranged on its surface. An abutting block which is attached to the inclined surface of the movable block is slidably connected in the vertical groove. A pushing block which is attached to the inclined surface of the movable block is slidably connected in the lower horizontal groove, and a spherical block is fixedly connected to the side of the pushing block close to the main shaft. The pushing block is connected to the inner wall of the lower horizontal groove through an elastic member arranged at its bottom.

[0017] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0018] The present invention is provided with an oil supply member, which uses the centrifugal force generated by the rotation of the main shaft to throw the lubricating oil in the oil box into the oil guide pipe, without the need for an additional oil pump or motor drive, saving energy and simplifying the system structure. And it automatically supplies oil only when the cutting saw blade rotates in reverse, and there is no need for continuous oil supply during forward cutting. Compared with the traditional oil supply method, it can avoid oil waste caused by manual operation. At the same time, the centrifugal force drive can reduce manual intervention, reduce the maintenance frequency and cost. At the same time, when the main shaft rotates at a high speed, self-locking is triggered. The counterweight block will drive the movable block to move along the upper horizontal groove of the installation cavity under the action of centrifugal force. The movable block cooperates with the abutting block to enable the pushing block to drive the spherical block to move along the lower horizontal groove towards the main shaft until the spherical block on the pushing block extends out of the lower horizontal groove and contacts the threaded part of the main shaft, which can prevent the movement of the locking nut and avoid the locking nut from being tightened more or loosened when the main shaft rotates forward or backward, affecting the normal use of the cutting saw blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0021] Figure 2 It is a three-dimensional separated structural schematic diagram of an adjusting frame and a main shaft in an embodiment of the present invention;

[0022] Figure 3 It is a three-dimensional separated structural schematic diagram of an oil supply member and a cutting saw blade in an embodiment of the present invention;

[0023] Figure 4Schematic cross-sectional structure diagram of the fixed seat in the embodiment of the present invention;

[0024] Figure 5 Schematic cross-sectional structure diagram of the oil guide pipe and oil box in the embodiment of the present invention;

[0025] Figure 6 In the embodiment of the present invention Figure 5 Enlarged schematic diagram of the structure at position A;

[0026] Figure 7 Schematic cross-sectional structure diagram of the mounting plate in the embodiment of the present invention;

[0027] Figure 8 In the embodiment of the present invention Figure 7 Enlarged schematic diagram of the structure at position B;

[0028] Figure 9 Schematic cross-sectional structure diagram of the lock nut in the embodiment of the present invention;

[0029] Figure 10 Enlarged schematic diagram of the structure at position C in the embodiment of the present invention.

[0030] The reference numerals in the figure respectively represent: 1. Placing part; 11. Workbench; 12. Adjusting frame; 13. Driving unit; 14. Main shaft; 15. Oil supply member; 151. Fixed frame; 152. Fixed seat; 1521. Ratchet wheel; 153. Oil box; 154. Outlet oil pipe; 155. Oil guide pipe; 1551. Movable pipe; 1552. Counterweight ring; 1553. Magnetic frame; 1554. Sealing plug; 156. Mounting seat; 1561. Pin shaft; 1562. Pawl; 1563. Torsion spring; 2. Cutting part; 21. Cutting saw blade; 211. Oil groove; 22. Fixed member; 221. Mounting plate; 2211. Annular oil cavity; 2212. Micro hole; 2213. Ring plate; 222. Lock nut; 2221. Mounting cavity; 2222. Movable block; 2223. Counterweight block; 2224. Abutting block; 2225. Pushing block; 2226. Spherical block. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Embodiment:

[0034] Please refer to Figures 1 - 10 , the present invention provides a technical solution: a circular saw blade sawing machine based on a micro-groove self-lubricating structure, comprising:

[0035] A placement part 1, the placement part 1 includes a workbench 11, the workbench 11 is fixedly connected to a drive unit 13 through an adjusting frame 12 provided at its bottom, the output end of the drive unit 13 is fixedly connected to a main shaft 14, and an oil supply member 15 is provided inside the adjusting frame 12;

[0036] A cutting part 2, the cutting part 2 includes a cutting saw blade 21, and the cutting saw blade 21 is connected to the main shaft 14 through a fixing member 22 provided on its outer side;

[0037] Among them, the oil supply member 15 includes a fixing frame 151, the fixing frame 151 is fixedly connected inside the adjusting frame 12, the fixing frame 151 is rotationally connected to a fixing seat 152 rotationally connected to the outer surface of the main shaft 14 through an annular groove provided on its circumferential outer surface, an oil box 153 for storing lubricating oil is fixedly connected inside the fixing seat 152, an oil outlet pipe 154 is fixedly communicated with the circumferential outer surface of the oil box 153, and the fixing seat 152 is fixedly connected to a guide oil pipe 155 communicated with the oil outlet pipe 154 through an annular frame provided on its circumferential outer surface.

[0038] Oil grooves 211 are provided on both sides of the cutting saw blade 21, and a plurality of the oil grooves 211 are provided and are distributed in a circumferential array along the center of the cutting saw blade 21, and the oil grooves 211 on both sides of the cutting saw blade 21 are alternately distributed.

[0039] The guide oil pipe 155 includes a flexible pipe and a rigid pipe. One side of the flexible pipe away from the rigid pipe is fixedly connected to a movable pipe 1551 that slides on the circumferential outer surface of the oil outlet pipe 154, and a counterweight ring 1552 is fixedly connected to the circumferential outer surface of the movable pipe 1551. The movable pipe 1551 is connected to the circumferential outer surface of the oil box 153 through a return spring provided on its side close to the oil outlet pipe 154. A magnetic frame 1553 is fixedly connected inside the movable pipe 1551, and a sealing plug 1554 that fits against the inner wall of the oil outlet pipe 154 is fixedly connected inside the magnetic frame 1553. A magnetic connection is provided between one side of the oil outlet pipe 154 close to the movable pipe 1551 and the magnetic frame 1553.

[0040] The fixing member 22 includes mounting plates 221, there are two mounting plates 221 and they are symmetrically distributed left and right along the cutting saw blade 21. A positioning column penetrating the surface of the cutting saw blade 21 is provided in the space enclosed by the two mounting plates 221, and a plurality of the positioning columns are provided and are distributed in a circumferential array along the center of the mounting plates 221. The mounting plate 221 close to the fixing frame 151 is fixedly connected to the circumferential outer surface of the main shaft 14, and the mounting plate 221 away from the fixing frame 151 is detachably mounted on the end of the main shaft 14 through a locking nut 222 provided on its outer side.

[0041] An annular oil cavity 2211 is provided inside each of the two mounting plates 221, and the two annular oil cavities 2211 are interconnected through a connecting pipe provided inside them. Micropores 2212 communicating with the oil groove 211 are provided in the annular oil cavity 2211, and a plurality of such micropores 2212 are provided and are distributed in a circumferential array along the center of the annular oil cavity 2211. A ring plate 2213 fixedly connected to the outer circumferential surface of the oil guide pipe 155 is rotatably mounted on the surface of the mounting plate 221 close to the fixing frame 151.

[0042] A mounting seat 156 that fits against the outer circumferential surface of the main shaft 14 is fixedly connected to the surface of the mounting plate 221 close to the fixing frame 151. The mounting seat 156 is rotatably connected to a pawl 1562 through a pin 1561 provided on its outer circumferential surface, and a plurality of such pawls 1562 are provided and are distributed in a circumferential array along the center of the mounting seat 156. A torsion spring 1563 is sleeved on the outer circumferential surface of the pin 1561. The fixed seat 152 is fixedly connected to a ratchet wheel 1521 that fits against the pawl 1562 through a cavity provided inside it.

[0043] The locking nut 222 is provided with a plurality of mounting cavities 2221 distributed in a circumferential array along the main shaft 14. The mounting cavity 2221 includes an upper horizontal groove, a vertical groove, and a lower horizontal groove that communicate with each other. A movable block 2222 is slidably connected in the upper horizontal groove, and a counterweight block 2223 is fixedly connected to the top of the movable block 2222. The counterweight block 2223 is connected to the inner wall of the upper horizontal groove through a return spring provided on its surface. An abutting block 2224 that fits against the inclined surface of the movable block 2222 is slidably connected in the vertical groove. A pushing block 2225 that fits against the inclined surface of the movable block 2222 is slidably connected in the lower horizontal groove, and a spherical block 2226 is fixedly connected to the side of the pushing block 2225 close to the main shaft 14. The pushing block 2225 is connected to the inner wall of the lower horizontal groove through an elastic member provided at its bottom.

[0044] Installation process of the cutting saw blade 21:

[0045] During actual use, the staff controls the position of the adjusting frame 12 (a lifting mechanism is provided inside the adjusting frame 12) so that the adjusting frame 12 moves downward by a certain distance, and then the cutting saw blade 21 is correctly installed on the main shaft 14 of the sawing machine, ensuring that the central hole of the cutting saw blade 21 is precisely matched with the main shaft 14 (positioning columns are provided on the mounting plate 221). The cutting saw blade 21 is usually printed with a rotation direction arrow to ensure that the rotation direction of the cutting saw blade 21 is completely consistent with that of the main shaft 14. Finally, the locking nut 222 is used to fix it. After the fixing is completed, the adjusting frame 12 returns to its initial position, so that a part of the cutting saw blade 21 can leak out from the notch on the surface of the workbench 11, facilitating the cutting of materials.

[0046] Oil supply process:

[0047] After the cutting saw blade 21 is installed, the drive unit 13 and the main shaft 14 drive the cutting saw blade 21 to rotate at a high speed. At this time, the cutting saw blade 21 can cut the workpiece.

[0048] After cutting is completed, the drive unit 13 drives the main shaft 14 to rotate in the opposite direction. The oil supply member 15 on the main shaft 14 will rotate at a high speed synchronously. The movable tube 1551 and the counterweight ring 1552 on the oil guide tube 155 will move away from the oil outlet pipe 154 under the action of centrifugal force, and the return spring will be stretched. When the movable tube 1551 moves, the centrifugal force on the movable tube 1551 will overcome the magnetic force between the magnetic frame 1553 and the oil outlet pipe 154. Furthermore, the sealing plug 1554 will be separated from the oil outlet pipe 154, and the communication between the oil outlet pipe 154 and the oil guide tube 155 can be realized, facilitating the lubricating oil in the oil box 153 to enter the oil guide tube 155 in the later stage.

[0049] It should be noted that a ratchet 1521 is provided in the fixed seat 152, and a ratchet pawl 1562 is provided on the outer circumferential surface of the mounting seat 156. When the main shaft 14 drives the cutting saw blade 21 to rotate normally, the ratchet pawl 1562 will not engage with the ratchet 1521 in the fixed seat 152, and the fixed seat 152 can be kept stable in the fixed frame 151 and does not rotate with the main shaft 14. When the main shaft 14 drives the cutting saw blade 21 to rotate in the opposite direction, at this time, the ratchet 1521 will engage with the ratchet pawl 1562. Furthermore, the fixed seat 152 will rotate synchronously with the main shaft 14 under the cooperation of the ratchet 1521 and the ratchet pawl 1562, facilitating the lubricating oil in the oil box 153 to enter the oil guide tube 155.

[0050] When the oil box 153 rotates at a high speed with the main shaft 14, the lubricating oil in the oil box 153 will be thrown to the edge under the action of centrifugal force. When the oil outlet pipe 154 and the oil guide tube 155 are communicated with each other, the lubricating oil is allowed to enter the annular oil cavity 2211 from the oil guide tube 155, and the annular oil cavities 2211 of the two mounting plates 221 are communicated with each other through the connecting pipe. Furthermore, the annular oil cavity 2211 can be filled with lubricating oil. When the cutting saw blade 21 rotates counterclockwise in the non-processing state, the centrifugal force throws out the lubricant in the annular oil cavity 2211, and cooperates with the micropores 2212 and the oil grooves 211 to evenly cover the saw blade edge and the cutting area of the cutting saw blade 21, ensuring comprehensive lubrication, forming a lubricating film at the contact interface between the cutting saw blade 21 and the workpiece, reducing the direct friction between metals, and prolonging the service life of the cutting saw blade 21.

[0051] It should be noted that a ring plate 2213 is provided on the surface of the mounting plate 221 close to the main shaft 14. When the mounting plate 221 and the cutting saw blade 21 rotate synchronously, the oil guide pipe 155 will rotate on the surface of the mounting plate 221 following the ring plate 2213 without movement interference. A sealing gasket is provided between the ring plate 2213 and the inner wall of the annular oil cavity 2211 to prevent lubricating oil from leaking. The oil grooves 211 formed on both sides of the cutting saw blade 21 are alternately distributed. The alternating oil grooves 211 form staggered oil film ejection points on both sides of the cutting saw blade 21. When the cutting saw blade 21 rotates, the oil liquid is ejected from different positions on both sides, forming a denser lubrication network in the cutting area. At the same time, the alternating oil grooves 211 can prevent the oil grooves 211 from being opened at the same position on both sides of the cutting saw blade 21, resulting in the reduction of the substrate thickness of the cutting saw blade 21 by the oil grooves 211 on both sides at the same time. Under the action of the periodic cutting force, stress concentration at the symmetric oil grooves 211 is likely to cause microcracks.

[0052] When the cutting saw blade 21 stops rotating, the centrifugal force acting on the movable pipe 1551 disappears at this time. Then the return spring will reset the movable pipe 1551, and the movable pipe 1551 will move towards the position of the oil outlet pipe 154. When the movable pipe 1551 approaches the oil outlet pipe 154, the magnetic frame 1553 will be instantaneously attracted to the end of the oil outlet pipe 154 under the cooperation of magnetic force. Then the sealing plug 1554 will block the oil outlet pipe 154, realizing the closure of the oil outlet pipe 154 and avoiding the leakage of lubricating oil in the oil box 153.

[0053] It should be noted that both the port of the oil outlet pipe 154 and the sealing plug 1554 are designed in a conical shape, and the surface of the sealing plug 1554 is designed to be flexible. The conical opening and the conical sealing plug 1554 are in contact through an inclined surface, which can achieve line contact sealing. The contact stress is higher under the same pressure, which can more effectively block the oil leakage path. At the same time, the conical structure has an automatic centering function. Even if there is a slight angular deviation, the sealing plug 1554 will automatically adjust its position during the contact process to ensure uniform fitting of the sealing surface.

[0054] Self-locking process:

[0055] After the locking nut 222 is installed on the main shaft 14, with the high-speed rotation of the main shaft 14, the locking nut 222 will rotate synchronously with the main shaft 14. Under the action of centrifugal force, the counterweight 2223 will drive the movable block 2222 to move along the upper horizontal groove of the installation cavity 2221. Then, the inclined surface of the movable block 2222 will come into contact with the inclined surface of the upper part of the abutting block 2224, enabling the abutting block 2224 to move downward along the vertical groove. Under the action of the inclined surface, the pushing block 2225 will move along the lower horizontal groove towards the main shaft 14 until the spherical block 2226 on the pushing block 2225 extends out of the lower horizontal groove and contacts the threaded part of the main shaft 14, achieving the loosening prevention of the self-locking nut and avoiding the loosening of the self-locking nut when the main shaft 14 rotates forward or backward. When the main shaft 14 stops rotating, the counterweight 2223 will return to its initial position with the cooperation of the return spring. Then, the pushing block 2225 will drive the spherical block 2226 to re-enter the installation cavity 2221 to avoid interference.

[0056] It should be noted that the contact between the spherical block 2226 and the threaded part of the main shaft 14 is point contact, rather than the traditional line contact or surface contact. Point contact generates a higher contact pressure under the same load, thus significantly increasing the frictional force (the frictional force is independent of the contact area, but the increased pressure may indirectly increase the friction coefficient through material deformation). Moreover, although the local pressure of point contact is high, the contact area is small, and the spherical block 2226 is made of high-strength wear-resistant material, which can reduce the wear of the threaded part of the main shaft 14.

[0057] The present invention adopts the oil supply member 15 and the fixing member 22, which have the following advantages:

[0058] Advantage 1: The centrifugal force generated by the rotation of the main shaft 14 is used to throw the lubricating oil in the oil box 153 into the oil guide pipe 155, without the need for an additional oil pump or motor drive, saving energy and simplifying the system structure. And it automatically supplies oil only when the cutting saw blade 21 rotates in reverse, without continuous oil supply during forward cutting. Compared with the traditional oil supply method, it can avoid oil waste caused by manual operation. At the same time, centrifugal force drive can reduce manual intervention and lower the maintenance frequency and cost.

[0059] Advantage 2: The centrifugal force generated by high-speed rotation enables the oil to uniformly penetrate into the saw blade edge through the micropores 2212 and the oil grooves 211, forming a complete lubricating film to reduce direct metal friction. And the oil grooves 211 on both sides of the cutting saw blade 21 are staggered, forming dense oil film spraying points during rotation, which can cover the entire cutting area. The alternating distribution of the oil grooves 211 can avoid weakening the matrix thickness of the cutting saw blade 21, resulting in stress concentration under its periodic cutting force, maintaining the uniformity of the matrix strength of the cutting saw blade 21, and extending the service life of the cutting saw blade 21.

[0060] Advantage three: The ports of the oil outlet pipe 154 and the sealing plug 1554 are both conical designs, and the surface of the sealing plug 1554 is a flexible design, which can achieve line contact sealing. Under the same pressure, the contact stress is higher, which can more effectively block the oil leakage path. At the same time, the conical structure has an automatic centering function. Even if there is a slight angular deviation, the sealing plug 1554 will automatically adjust its position during the contact process to ensure uniform fitting of the sealing surface.

[0061] Advantage four: When the main shaft 14 rotates at high speed, it triggers self-locking. Under the action of centrifugal force, the counterweight 2223 will drive the movable block 2222 to move along the upper horizontal groove of the installation cavity 2221. The movable block 2222 cooperates with the abutting block 2224, which can enable the pushing block 2225 to drive the spherical block 2226 to move along the lower horizontal groove towards the main shaft 14 until the spherical block 2226 on the pushing block 2225 extends out of the lower horizontal groove and contacts the threaded part of the main shaft 14, which can hinder the movement of the locking nut 222 and prevent the locking nut 222 from being tightened more or loosened when the main shaft 14 rotates forward or backward, affecting the normal use of the cutting saw blade 21.

[0062] Advantage five: The pushing block 2225 contacts the threaded part of the main shaft 14 through the spherical block 2226. The contact between the spherical block 2226 and the threaded part of the main shaft 14 is point contact, rather than the traditional line contact or surface contact, thus significantly increasing the friction force. Although the local pressure of the point contact is high, the contact area is small, and the material of the spherical block 2226 is selected as a high-strength wear-resistant material, which can reduce the wear of the threaded part of the main shaft 14 and is beneficial to extending the service life of the main shaft 14.

[0063] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A circular saw blade sawing machine based on a micro-groove self-lubricating structure, characterized in that: include: A placement portion (1), the placement portion (1) comprising a workbench (11), the workbench (11) being fixedly connected to a drive unit (13) via an adjustment frame (12) arranged at the bottom thereof, the output end of the drive unit (13) being fixedly connected to a main shaft (14), and an oil supply component (15) being arranged inside the adjustment frame (12); A cutting part (2), the cutting part (2) comprising a cutting saw blade (21), the cutting saw blade (21) being connected to the main shaft (14) via a fixing member (22) arranged on the outside thereof; The oil supply member (15) comprises a fixing frame (151), wherein the fixing frame (151) is fixedly connected to the inside of the adjusting frame (12), and the fixing frame (151) is rotatably connected to a fixing seat (152) rotatably connected to the circumferential outer surface of the main shaft (14) via an annular groove arranged on the circumferential outer surface of the fixing frame (151), and an oil box (153) for storing lubricating oil is fixedly connected inside the fixing seat (152), and the circumferential outer surface of the oil box (153) is fixedly connected to an oil outlet pipe (154), and the fixing seat (152) is fixedly connected to an oil guide pipe (155) connected to the oil outlet pipe (154) via an annular frame arranged on the circumferential outer surface of the fixing seat (152).

2. A circular saw blade sawing machine based on a micro-groove self-lubricating structure according to claim 1, characterized in that: Both sides of the cutting saw blade (21) are provided with oil grooves (211), and a plurality of the oil grooves (211) are arranged in an array along the central circumference of the cutting saw blade (21), and the oil grooves (211) on both sides of the cutting saw blade (21) are arranged alternately.

3. The circular saw blade sawing machine based on the micro-groove self-lubricating structure according to claim 1, characterized in that: The oil guide pipe (155) comprises a hose and a hard pipe. The hose is fixedly connected to a movable pipe (1551) that slides with the circumferential outer surface of the oil outlet pipe (154) on the side away from the hard pipe, and a counterweight ring (1552) is fixedly connected to the circumferential outer surface of the movable pipe (1551). The movable pipe (1551) is connected to the circumferential outer surface of the oil box (153) via a return spring arranged on the side close to the oil outlet pipe (154). The movable pipe (1551) is fixedly connected to a magnetic frame (1553) inside, and a sealing plug (1554) that fits the inner wall of the oil outlet pipe (154) is fixedly connected inside the magnetic frame (1553). The oil outlet pipe (154) is magnetically connected to the magnetic frame (1553) on the side close to the movable pipe (1551).

4. The circular saw blade sawing machine based on the micro groove self-lubricating structure according to claim 1, characterized in that: The fixing member (22) comprises a mounting plate (221), two mounting plates (221) are provided and are symmetrically distributed along the cutting saw blade (21), a positioning column penetrating the surface of the cutting saw blade (21) is provided in the space surrounded by the two mounting plates (221), and a plurality of the positioning columns are provided and are distributed in an array along the central circumference of the mounting plate (221), the mounting plate (221) close to the fixing frame (151) is fixedly connected to the circumferential outer surface of the main shaft (14), and the mounting plate (221) away from the fixing frame (151) is detachably mounted on the end of the main shaft (14) via a locking nut (222) arranged on the outer side thereof.

5. The circular saw blade sawing machine based on the micro groove self-lubricating structure according to claim 4, characterized in that: An annular oil chamber (2211) is provided inside the two mounting plates (221), and the two annular oil chambers (2211) are connected to each other via a connecting pipe arranged inside the two annular oil chambers (2211). A micro hole (2212) connected to the oil groove (211) is provided inside the annular oil chamber (2211), and a plurality of the micro holes (2212) are arranged and distributed in an array along the central circumference of the annular oil chamber (2211). A ring plate (2213) fixedly connected to the circumferential outer surface of the oil guide pipe (155) is rotatably mounted on the surface of the mounting plate (221) close to the fixing frame (151).

6. The circular saw blade sawing machine based on the micro groove self-lubricating structure according to claim 1, characterized in that: A mounting seat (156) that fits the circumferential outer surface of the main shaft (14) is fixedly connected to the surface of the mounting plate (221) close to the fixing frame (151); the mounting seat (156) is rotatably connected to a pawl (1562) via a pin shaft (1561) arranged on the circumferential outer surface of the mounting seat (156); a plurality of pawls (1562) are arranged and distributed in an array along the central circumference of the mounting seat (156); a torsion spring (1563) is sleeved on the circumferential outer surface of the pin shaft (1561); and the fixing seat (152) is fixedly connected to a ratchet (1521) that fits the pawl (1562) via a cavity arranged inside the fixing seat (152).

7. The circular saw blade sawing machine based on the micro groove self-lubricating structure according to claim 4, characterized in that: The locking nut (222) is provided with a mounting cavity (2221), and the mounting cavity (2221) is provided with a plurality of mounting cavities (2221) and is distributed in an array along the circumference of the main shaft (14). The mounting cavity (2221) comprises an upper transverse groove, a vertical groove and a lower transverse groove which are connected to each other. A movable block (2222) is slidably connected in the upper transverse groove, and a counterweight block (2223) is fixedly connected to the top of the movable block (2222). The counterweight block (2223) is provided with a The return spring is connected to the inner wall of the upper transverse groove, and a contact block (2224) is slidably connected in the vertical groove and fits the inclined surface of the movable block (2222). A push block (2225) is slidably connected in the lower transverse groove and fits the inclined surface of the movable block (2222), and a spherical block (2226) is fixedly connected to the push block (2225) on the side close to the main shaft (14). The push block (2225) is connected to the inner wall of the lower transverse groove through an elastic member arranged at the bottom thereof.

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