A new trephine
Patent Information
- Application Number
- CN202522397881.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-11
AI Technical Summary
The operation of existing ring saws is cumbersome when changing ring saw blades of different diameters, and the positioning mechanism is difficult to ensure coaxiality, resulting in poor cutting quality, severe wear, reduced construction efficiency and tool life.
The system employs an adjustable positioning wheel and clamping wheel mechanism. The spacing between the positioning wheels and the clamping force are adjusted via an internal hexagonal connector and a knob. Combined with the cooperation of the annular positioning protrusion and the positioning groove, it achieves flexible adaptation and stable positioning of the ring saw blade.
It enables rapid adaptation to different diameter ring saw blades, improving tool versatility and cutting accuracy, extending the service life of the ring saw blade and drive wheel, and reducing vibration and noise.
Smart Images
Figure CN224928238U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of ring saw technology, specifically a novel ring saw. Background Technology
[0002] As a highly efficient concrete cutting tool, the ring saw is widely used in various fields such as building decoration, stone processing, and pipe installation. Its core function is to cut various materials such as concrete, stone, and wood using a high-speed rotating ring saw blade. With the increasing demands for work efficiency and tool durability in modern construction, traditional ring saws have gradually revealed many technical defects, making it difficult to meet the high standards required for actual construction.
[0003] Existing ring saws typically consist of a housing, drive motor, drive wheels, and positioning components. Their positioning mechanisms often employ fixed-gap positioning wheels, making flexible adjustment impossible for different ring saw blade sizes. Changing to ring saw blades of different diameters requires disassembling the positioning components and replacing them with compatible parts, a cumbersome and time-consuming process that significantly reduces construction efficiency. Furthermore, the fixed positioning structure makes it difficult to ensure coaxiality between the positioning wheels and drive wheels. During high-speed rotation, the ring saw blade is prone to deviation and wobbling, resulting not only in larger cutting discrepancies and rough cut surfaces but also increased frictional wear between the ring saw blade and the positioning and drive wheels, shortening the ring saw blade's lifespan and increasing construction costs. Utility Model Content
[0004] In view of the problems existing in the prior art, this utility model discloses a novel ring saw. The technical solution adopted is as follows: it includes a lower housing and an upper housing, the lower housing and the upper housing are fixedly connected, a motor is fixedly installed on the side of the lower housing, the output shaft of the motor passes through a through hole on the side of the lower housing and is fixedly connected to the inner side of the drive wheel, a positioning wheel adjustment mechanism is installed in the lower housing, the positioning wheel adjustment mechanism is equipped with two positioning wheels, the two positioning wheels and the drive wheel cooperate to position the ring saw blade, and a pressure wheel adjustment mechanism is installed in the upper housing, the pressure wheel adjustment mechanism is equipped with a pressure wheel for pressing the ring saw blade onto the drive wheel;
[0005] The positioning wheel adjustment mechanism includes a slider, a guide rail, a rotating rod, support columns, external threads, and internal hexagonal socket connectors. Two guide rails are provided, each fixedly installed on both sides of the bottom of the lower housing. Sliders are slidably connected to each guide rail, and positioning wheels are rotatably mounted on each slider. The two ends of the rotating rod are rotatably connected to opposite sides of the lower housing. External threads are provided on the outer sides of both ends of the rotating rod, with opposite thread directions. The two ends of the rotating rod are threaded to the threaded holes on opposite sides of the two sliders. Two support columns are sleeved on the outer side of the middle of the rotating rod, and these two support columns are fixedly installed at the bottom of the lower housing. Two internal hexagonal socket connectors are provided, rotatably installed on the sides of both ends of the lower housing. The shafts on the end faces of the two internal hexagonal socket connectors pass through through holes on the sides of both ends of the lower housing and are fixedly connected to the two ends of the rotating rod.
[0006] As a preferred embodiment of this utility model, the pressure wheel adjustment mechanism includes a knob, a rotating column, a lead screw, a rotating seat, and a pin. Both ends of the pin are fixedly connected to the side wall of the groove inside the upper housing. One end of the pin passes through a through hole on one side of the rotating seat. The rotating column is rotatably installed in the elongated hole at the top of the other end of the rotating seat. The knob is rotatably installed on the top of the upper housing. The bottom of the knob is fixedly connected to the upper end of the lead screw. The lower end of the lead screw is threadedly connected to the threaded hole at the top of the rotating column. The side of the rotating seat is rotatably connected to the side of the pressure wheel.
[0007] In a preferred embodiment of this invention, the drive wheel has two annular positioning protrusions on its side, and the ring saw blade has a positioning groove on its side that mates with the two positioning protrusions. In another preferred embodiment, the positioning wheel has an annular groove on its side, and the ring saw blade is located within the groove on the side of the positioning wheel.
[0008] The beneficial effects of this utility model are as follows: 1. When the rotating rod is twisted by the internal hexagonal connector, the two sliders can move synchronously in opposite directions along the guide rail, thereby driving the positioning wheels to adjust the spacing. Different diameter ring saw blades can be quickly adapted without disassembling the parts. The adjustment process is simple and efficient, greatly improving the versatility of the tool and the work efficiency. At the same time, the sliding cooperation between the guide rail and the slider and the symmetrical transmission structure of the rotating rod ensure the coaxiality between the two positioning wheels and the drive wheel, effectively avoiding the problem of ring saw blade deviation and shaking caused by positioning deviation, and improving the cutting accuracy.
[0009] 2. By rotating the knob, the lead screw rotates, and the threaded engagement between the lead screw and the rotating column drives the rotating seat to rotate around the pin shaft, thereby adjusting the clamping force of the clamping wheel on the ring saw blade. This allows for adjustment of the clamping force, which can be flexibly adjusted according to the specifications of the ring saw blade, its wear level, and the hardness of the material being processed. This avoids slippage caused by insufficient clamping force and excessive wear caused by excessive clamping force, significantly extending the service life of the ring saw blade and the drive wheel.
[0010] 3. By cooperating with the positioning groove of the ring saw blade through two annular positioning protrusions, the axial positioning of the ring saw blade and the drive wheel is realized, which effectively prevents the axial movement of the ring saw blade during high-speed rotation; the annular groove on the side of the positioning wheel fits with the edge of the ring saw blade, further limiting the radial movement of the ring saw blade. The dual positioning effect greatly improves the stability of the ring saw blade rotation process and reduces vibration and noise. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the internal structure of the housing of this utility model;
[0013] Figure 3 This is a schematic diagram of the positioning wheel adjustment mechanism of this utility model;
[0014] Figure 4 This is a schematic diagram of the pressure wheel adjustment mechanism of this utility model;
[0015] Figure 5 This is a schematic diagram of the drive wheel structure of this utility model.
[0016] In the diagram: 1. Lower housing, 2. Upper housing, 3. Motor, 4. Drive wheel, 5. Positioning wheel, 6. Positioning wheel adjustment mechanism, 61. Slider, 62. Guide rail, 63. Rotating rod, 64. Support column, 65. External thread, 66. Internal hexagonal connector, 7. Ring saw blade, 8. Pressure wheel, 9. Pressure wheel adjustment mechanism, 91. Knob, 92. Rotating column, 93. Lead screw, 94. Rotating seat, 95. Pin, 10. Positioning protrusion, 11. Positioning groove. Detailed Implementation
[0017] Example 1
[0018] like Figures 1 to 5As shown, this utility model discloses a novel ring saw. The technical solution includes a lower housing 1 and an upper housing 2, with the lower housing 1 fixedly connected to the upper housing 2. A motor 3 is fixedly mounted on the side of the lower housing 1, and the output shaft of the motor 3 passes through a through hole on the side of the lower housing 1 and is fixedly connected to the inner side of a drive wheel 4. A positioning wheel adjustment mechanism 6 is installed inside the lower housing 1, and two positioning wheels 5 are mounted on the positioning wheel adjustment mechanism 6. The side of each positioning wheel 5 has an annular groove, and the ring saw blade 7 is located in the groove on the side of the positioning wheel 5. Inside, two positioning wheels 5 and a drive wheel 4 cooperate to position the ring saw blade 7. Two annular positioning protrusions 10 are provided on the side of the drive wheel 4, and positioning grooves 11 that mate with the two positioning protrusions 10 are provided on the side of the ring saw blade 7. Through the cooperation of the two annular positioning protrusions 10 with the positioning grooves 11 of the ring saw blade 7, axial positioning of the ring saw blade 7 and the drive wheel 4 is achieved, effectively preventing axial movement of the ring saw blade 7 during high-speed rotation. The annular groove on the side of the positioning wheel 5 fits against the edge of the ring saw blade 7, further positioning the ring saw blade. The radial limiting and dual positioning function significantly improves the stability of the ring saw blade 7 during rotation, reducing vibration and noise. A pressure wheel adjustment mechanism 9 is installed inside the upper housing 2. This mechanism includes a pressure wheel 8 for pressing the ring saw blade 7 against the drive wheel 4. The pressure wheel adjustment mechanism 9 comprises a knob 91, a rotating column 92, a lead screw 93, a rotating seat 94, and a pin 95. Both ends of the pin 95 are fixedly connected to the side walls of the groove inside the upper housing 2, and one end of the pin 95 passes through a through hole on one side of the rotating seat 94. A rotating column 92 is rotatably installed in the elongated hole at the top of the other end of the rotating seat 94. A knob 91 is rotatably installed on the top of the upper housing 2. The bottom of the knob 91 is fixedly connected to the upper end of the lead screw 93, and the lower end of the lead screw 93 is threadedly connected to the threaded hole at the top of the rotating column 92. The side of the rotating seat 94 is rotatably connected to the side of the pressure wheel 8. By rotating the knob 91, the lead screw 93 is driven to rotate. The threaded engagement between the lead screw 93 and the rotating column 92 drives the rotating seat 94 to rotate around the pin 95, thereby adjusting the pressure force of the pressure wheel 8 on the ring saw blade 7. This allows for adjustment of the pressure force, which can be flexibly adjusted according to the specifications, wear degree, and hardness of the processed material of the ring saw blade 7. This avoids slippage caused by insufficient pressure force and excessive wear caused by excessive pressure force, significantly extending the service life of the ring saw blade 7 and the drive wheel 4.
[0019] The positioning and adjusting wheel mechanism 6 includes a slider 61, a guide rail 62, a rotating rod 63, support columns 64, external threads 65, and an internal hexagonal socket 66. Two guide rails 62 are provided, each fixedly installed on both sides of the bottom of the lower housing 1. Sliding sliders 61 are slidably connected to each guide rail 62, and positioning wheels 5 are rotatably mounted on each slider 61. The two ends of the rotating rod 63 are rotatably connected to opposite sides of the lower housing 1. External threads 65 are provided on the outer sides of both ends of the rotating rod 63, with opposite thread directions. The two ends of the rotating rod 63 are threaded to the threaded holes on opposite sides of the two sliders 61. Two support columns 64 are sleeved on the outer side of the middle of the rotating rod 63, and are fixedly installed at the bottom of the lower housing 1. Two internal hexagonal sockets 66 are provided. Two hexagonal socket connectors 66 are rotatably mounted on the sides of both ends of the lower housing 1. The shafts on the end faces of the two hexagonal socket connectors 66 pass through the through holes on the sides of both ends of the lower housing 1 and are fixedly connected to the two ends of the rotating rod 63. When the rotating rod 63 is twisted by the hexagonal socket connectors 66, the two sliders 61 can move synchronously in opposite directions along the guide rail 62, thereby driving the positioning wheels 5 to adjust the spacing. Different diameter ring saw blades can be quickly adapted without disassembling the parts. The adjustment process is simple and efficient, greatly improving the versatility of the tool and the work efficiency. At the same time, the sliding fit between the guide rail 62 and the sliders 61 and the symmetrical transmission structure of the rotating rod 63 ensure the coaxiality between the two positioning wheels and the drive wheel, effectively avoiding the problem of the ring saw blade running off course and shaking due to positioning deviation, and improving the cutting accuracy.
[0020] The working principle of this utility model is as follows: When installing the ring saw blade 7, an internal hexagonal tool is inserted into the internal hexagonal connectors 66 at both ends of the lower housing 1. Twisting the hexagonal connectors 66 drives the rotating rod 63 to rotate. Because the rotating rod 63 has reverse external threads 65 at both ends and is threadedly connected to the sliders 61 on the guide rail 62, the rotation of the rotating rod 63 will drive the two sliders 61 to move along the guide rail 62. The sliders 61 will drive the positioning wheel 5 to move synchronously in the opposite direction to adapt to ring saw blades 7 of different diameters. At the same time, the annular groove on the side of the positioning wheel 5 can radially limit the ring saw blade 7. Rotating the knob 91 on the top of the upper housing 2 drives the lead screw 93 to rotate and drives the rotating rod 63 to rotate. The moving column 92 moves up and down, causing the rotating seat 94 to rotate around the pin shaft 95, thereby adjusting the clamping force of the clamping wheel 8 on the ring saw blade 7 and balancing power transmission and component wear. During cutting, the motor 3 is started, and its output shaft drives the drive wheel 4 to rotate at high speed. The annular positioning protrusion 10 on the side of the drive wheel 4 engages with the positioning groove 11 of the ring saw blade 7. Under the action of the clamping wheel 8, the power is transmitted to the ring saw blade 7 to make it rotate synchronously. The radial limit of the positioning wheel 5 and the axial limit of the drive wheel 4 form a double positioning, ensuring the stable rotation of the ring saw blade 7 and achieving high-precision cutting. This effectively solves the problems of poor adaptability, low cutting accuracy, and short component life of traditional ring saws.
[0021] Components not described in detail in this article are existing technologies.
[0022] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.
Claims
1. A novel ring saw, comprising a lower housing (1) and an upper housing (2), wherein the lower housing (1) and the upper housing (2) are fixedly connected, and a motor (3) is fixedly mounted on the side of the lower housing (1), wherein the output shaft of the motor (3) passes through a through hole on the side of the lower housing (1) and is fixedly connected to the inner side of a drive wheel (4), characterized in that, The lower housing (1) is equipped with a positioning wheel adjustment mechanism (6), on which two positioning wheels (5) are installed. The two positioning wheels (5) and the drive wheel (4) cooperate to position the ring saw blade (7). The upper housing (2) is equipped with a pressure wheel adjustment mechanism (9), on which a pressure wheel (8) is installed to press the ring saw blade (7) onto the drive wheel (4). The positioning wheel adjustment mechanism (6) includes a slider (61), a guide rail (62), a rotating rod (63), a support column (64), an external thread (65), and an internal hexagonal connector (66). Two guide rails (62) are provided, each fixedly installed on both sides of the bottom of the lower housing (1). Sliders (61) are slidably connected to each of the two guide rails (62), and positioning wheels (5) are rotatably mounted on each of the two sliders (61). The two ends of the rotating rod (63) are rotatably connected to the opposite sides of the lower housing (1), and external threads (65) are provided on the outer sides of both ends of the rotating rod (63). The two external threads (65) are in opposite directions. The two ends of the rotating rod (63) are respectively connected to the threaded holes on the opposite sides of the two sliders (61). Two support columns (64) are sleeved on the outer side of the middle part of the rotating rod (63). The two support columns (64) are fixedly installed at the bottom of the lower housing (1). There are two internal hexagonal connectors (66). The two internal hexagonal connectors (66) are respectively rotatably installed on the sides of both ends of the lower housing (1). The shafts on the end faces of the two internal hexagonal connectors (66) pass through the through holes on the sides of both ends of the lower housing (1) and are fixedly connected to the two ends of the rotating rod (63).
2. The novel ring saw according to claim 1, characterized in that: The pressure wheel adjustment mechanism (9) includes a knob (91), a rotating column (92), a lead screw (93), a rotating seat (94), and a pin (95). The two ends of the pin (95) are fixedly connected to the side wall of the groove inside the upper housing (2). One end of the pin (95) passes through a through hole on one side of the rotating seat (94). The rotating column (92) is rotatably installed in the elongated hole at the top of the other end of the rotating seat (94). The knob (91) is rotatably installed on the top of the upper housing (2). The bottom of the knob (91) is fixedly connected to the upper end of the lead screw (93). The lower end of the lead screw (93) is threadedly connected to the threaded hole at the top of the rotating column (92). The side of the rotating seat (94) is rotatably connected to the side of the pressure wheel (8).
3. A novel ring saw according to claim 1, characterized in that: The drive wheel (4) has two annular positioning protrusions (10) on its side, and the ring saw blade (7) has a positioning groove on its side that matches the two positioning protrusions (10).
4. A novel ring saw according to claim 1, characterized in that: The positioning wheel (5) has an annular groove on its side, and the ring saw blade (7) is located in the groove on the side of the positioning wheel (5).