Circular saw capable of adjusting cutting angle and depth

Abstract

The utility model relates to the technical field of electric tools, in particular to a circular saw capable of adjusting cutting angle and depth, which comprises a base and a saw blade component, and a rectangular operation hole is arranged on the base; a cutting depth adjusting mechanism and a cutting angle adjusting mechanism are arranged on the base, and the two sides of the saw blade assembly are installed on the cutting depth adjusting mechanism and the cutting angle adjusting mechanism respectively. A first magnet is installed at the adjusting end of the cutting depth adjusting mechanism, and a first magnetic encoder matched with the first magnet is installed on the base. A second magnet is installed at the adjusting end of the cutting angle adjusting mechanism, and a second magnetic encoder matched with the second magnet is installed on the base. The cutting depth adjusting mechanism and the cutting angle adjusting mechanism can rapidly and conveniently adjust the cutting depth and the cutting angle of the saw blade assembly, the two sets of magnetic encoders are matched with the magnets, the adjusting changes of the cutting depth and the cutting angle can be accurately detected, the adjusting precision is high, and the adjusting effect is good.

Description

Technical Field

[0001] This utility model relates to the field of power tool technology, specifically to a circular saw with adjustable cutting angle and depth. Background Technology

[0002] A circular saw is an electric tool powered by a motor, which drives a circular saw blade through a transmission mechanism to perform sawing operations. Circular saws are characterized by safety, reliability, and high efficiency, and are suitable for sawing materials such as wood, fiberboard, plastics, and flexible cables. Electric circular saws feature a handle-style design.

[0003] To meet cutting requirements, the depth and angle of the cutting position need to be adjusted when cutting materials.

[0004] In traditional techniques, the cutting depth and angle are often adjusted manually using a mechanical ruler. After adjustment, a suitable clamp is used to lock the circular saw. However, different clamps need to be changed to lock the circular saw when it is adjusted to different cutting positions, which is costly and inconvenient. Furthermore, workers can not read accurately when adjusting using only a mechanical ruler, which affects the adjustment effect. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a circular saw with adjustable cutting angle and depth, which solves the problem of high application cost of circular saws that use multiple clamps to lock in different adjustment positions, and the problem of low adjustment accuracy of the method of manually adjusting the cutting depth and cutting angle with mechanical ruler.

[0006] To achieve the above and other related objectives, this utility model provides a circular saw with adjustable cutting angle and depth, including a base and a saw blade assembly. A rectangular working hole is provided on the base. A cutting depth adjustment mechanism is provided on the left side of the working hole and a cutting angle adjustment mechanism is provided on the right side of the working hole. The two sides of the saw blade assembly are respectively mounted on the cutting depth adjustment mechanism and the cutting angle adjustment mechanism. The cutting end of the saw blade assembly extends through the working hole to the lower end of the base.

[0007] The cutting depth adjustment mechanism has a first magnet on its adjustment end and a first magnetic encoder that cooperates with the first magnet on its base. The first magnet changes position relative to the first magnetic encoder as the height of the saw blade assembly is adjusted by the cutting depth adjustment mechanism, so as to obtain accurate depth adjustment data.

[0008] The adjusting end of the cutting angle adjusting mechanism is equipped with a second magnet, and the base is equipped with a second magnetic encoder that cooperates with the second magnet. The second magnet changes position relative to the second magnetic encoder as the angle of the saw blade assembly is adjusted by the cutting angle adjusting mechanism, so as to obtain accurate angle adjustment data.

[0009] In one embodiment of the present invention, the saw blade assembly includes: a housing, a drive motor at the rear end of the housing, a circular saw blade at the front end of the housing, and a central rotating shaft passing through the circular saw blade; the housing also includes a pair of meshing helical gears, one of which is mounted on the output end of the drive motor, and the other is mounted on the central rotating shaft.

[0010] In one embodiment of the present invention, a semi-circular upper protective cover is formed at the front end of the housing, and the upper protective cover protects the outer side of the upper end of the circular saw blade; a semi-circular lower protective cover is provided on the outer side of the lower end of the circular saw blade, and a mounting ring is provided at the rear end of the lower protective cover. The mounting ring is rotatably sleeved on the central rotating shaft through a rotating connector.

[0011] In one embodiment of this utility model, the size of the lower protective cover is smaller than that of the upper protective cover, and the lower protective cover can be rotatably retracted into the upper protective cover to expose the cutting position of the lower end of the circular saw blade.

[0012] In one embodiment of this utility model, a tension spring is connected between the upper protective cover and the lower protective cover to pull the lower protective cover to automatically reset.

[0013] In one embodiment of the present invention, the front end of the lower protective cover is provided with a lever, and the side end of the lower protective cover is provided with a rotation limiting plate.

[0014] In one embodiment of the present invention, the cutting depth adjustment mechanism includes a first base, a height adjustment plate mounted on the first base, and a first bolt fastener, wherein the height adjustment plate is provided with a height adjustment hole;

[0015] The upper protective cover has a mounting hole at its rear end. The head of the first bolt fastener is placed in the upper protective cover. The first bolt fastener passes through the mounting hole and the height adjustment hole in sequence and is then locked by a nut.

[0016] The outer end of the first bolt fastener is provided with an adjustment handle.

[0017] In one embodiment of the present invention, the rear end of the upper protective cover is further provided with a protrusion corresponding to the shape of the height adjustment plate, and a height scale line is provided on one side of the protrusion.

[0018] In one embodiment of the present invention, the cutting angle adjustment mechanism includes a second base, an angle adjustment plate, and a second bolt fastener. A flip-up L-shaped plate is hinged to the second base by a pin. One end of the L-shaped plate is mounted on the lower right side of the upper protective cover, and the other end of the L-shaped plate is provided with a connecting hole.

[0019] The angle adjustment plate is provided with an angle adjustment hole, and an angle scale line is provided on one side of the angle adjustment hole. The second bolt fastener passes through the angle adjustment hole and the connecting hole in sequence and is then locked by a nut.

[0020] In one embodiment of this utility model, both the first magnetic encoder and the second magnetic encoder are provided with a display screen, and the display screen adopts a single-chip microcomputer for intuitively displaying adjustment data.

[0021] As described above, the adjustable cutting angle and depth circular saw of this invention has the following beneficial effects:

[0022] 1. The cutting depth adjustment mechanism and the cutting angle adjustment mechanism provided by this utility model both adopt the method of changing the position of the bolt fastener and the adjustment hole to realize the adjustment function of the saw blade assembly. The adjustment method is simple and quick and easy to use. After adjustment, the cutting depth adjustment mechanism and the cutting angle adjustment mechanism can directly lock the saw blade assembly without the need for other clamps. One structure has multiple uses and saves costs.

[0023] 2. This utility model also includes a first magnetically coupled magnet and a first magnetic encoder to detect height changes in the cutting depth adjustment mechanism, and a second magnetically coupled magnet and a second magnetic encoder to detect angle changes in the cutting angle adjustment mechanism. Both the first and second magnetic encoders acquire specific adjustment data through magnetic field changes, achieving precise adjustment of the saw blade assembly and improving the adjustment effect. High-precision cutting depth adjustment helps reduce saw blade wear and improve cutting quality, while high-precision cutting angle adjustment can meet various angle beveling requirements, optimize cutting schemes, and improve material utilization. Furthermore, using appropriate cutting angles for splicing can enhance the connection strength of materials.

[0024] 3. The cutting depth adjustment mechanism and cutting angle adjustment mechanism of this utility model can quickly and conveniently adjust the cutting depth and cutting angle of the saw blade assembly. The two sets of magnetic encoders and the setting of magnets can accurately detect the adjustment changes of cutting depth and cutting angle, with high adjustment accuracy and good adjustment effect. Attached Figure Description

[0025] Figure 1 The diagram shown is a schematic representation of the overall structure of this utility model.

[0026] Figure 2 This is a schematic diagram of the overall structure of the present invention from another perspective.

[0027] Figure 3 The diagram shown is an enlarged structural schematic of the saw blade removal assembly of this utility model.

[0028] Figure 4 The diagram shown is an exploded view of the saw blade assembly in this invention.

[0029] Figure 5 Displayed as Figure 4 A diagram from another perspective.

[0030] Component designation explanation

[0031] Base 1; Rectangular working hole 11;

[0032] Saw blade assembly 2; housing 21; drive motor 22; circular saw blade 23; central shaft 24; helical gear 25; upper protective cover 26; mounting hole 261; protrusion 262; lower protective cover 27; mounting ring 271; lever 272; rotation limit plate 273; tension spring 28;

[0033] Cutting depth adjustment mechanism 3; first base 31; height adjustment plate 32; height adjustment hole 321; first bolt fastener 33; adjustment handle 34;

[0034] Cutting angle adjustment mechanism 4; second base 41; angle adjustment plate 42; angle adjustment hole 421; second bolt fastener 43; L-shaped plate 44; connecting hole 441;

[0035] First magnet 5; first magnetic encoder 6; second magnet 7; second magnetic encoder 8. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0037] Please see Figures 1 to 5It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0038] Please see Figures 1-2 This utility model provides a circular saw with adjustable cutting angle and depth, including a base 1 and a saw blade assembly 2. A rectangular working hole 11 is provided on the base 1. A cutting depth adjustment mechanism 3 is provided on the left side of the working hole 11 and a cutting angle adjustment mechanism 4 is provided on the right side of the working hole 11. The two sides of the saw blade assembly 2 are respectively mounted on the cutting depth adjustment mechanism 3 and the cutting angle adjustment mechanism 4. The cutting end of the saw blade assembly 2 extends through the working hole 11 to the lower end of the base 1.

[0039] Please see Figures 4-5 The saw blade assembly 2 includes: a housing 21, a drive motor 22 at the rear end of the housing 21, and a circular saw blade 23 at the front end of the housing 21, the circular saw blade 23 being the cutting end of the saw blade assembly 2; a central rotating shaft 24 is connected to the circular saw blade 23; the housing 21 also contains a pair of meshing helical gears 25, one helical gear 25 being mounted on the output end of the drive motor 22, and the other helical gear 25 being mounted on the central rotating shaft 24; the saw blade assembly 2 is powered by the drive motor 22, and the power is transmitted through the pair of meshing helical gears 25, causing the central rotating shaft 24 to drive the circular saw blade 23 to rotate and achieve the cutting function.

[0040] The front end of the housing 21 has a semi-circular upper protective cover 26, which protects the outer side of the upper end of the circular saw blade 23. The outer side of the lower end of the circular saw blade 23 has a semi-circular lower protective cover 27. The rear end of the lower protective cover 27 has a mounting ring 271, which is rotatably fitted onto the central rotating shaft 24 via a rotating connector. The lower protective cover 27 is smaller than the upper protective cover 26. The front end of the lower protective cover 27 has a lever 272, and the side end of the lower protective cover 27 has a rotation limiting plate 273. By operating the lever 272, the lower protective cover 27 can be rotatably retracted into the upper protective cover 26 to expose the cutting position of the lower end of the circular saw blade 23. The rotation limiting plate 273 restricts the rotation position of the lower protective cover 27. A tension spring 28 connects the upper protective cover 26 and the lower protective cover 27, which automatically resets the lower protective cover 27 when the saw blade assembly 2 is not in use, preventing workers from accidentally touching the circular saw blade 23.

[0041] Please see Figure 3 The cutting depth adjustment mechanism 3 has a first magnet 5 mounted on its adjusting end. Specifically, the cutting depth adjustment mechanism 3 includes a first base 31, a height adjustment plate 32 mounted on the first base 31, and a first bolt fastener 33. The height adjustment plate 32 has a height adjustment hole 321. The rear end of the upper protective cover 26 has a mounting hole 261. The first bolt fastener 33 passes through the mounting hole 261 and the height adjustment hole 321 in sequence and is then locked by a nut. The height of the saw blade assembly 2 is adjusted by adjusting the height position of the first bolt fastener 33 in the height adjustment hole 321. The first magnet 5 is specifically mounted on the first bolt fastener 32. The head of the first bolt fastener 33 is placed in the upper protective cover 26. An adjustment handle 34 is provided at the outer end. The rear end of the upper protective cover 26 is also provided with a protrusion 262 corresponding to the shape of the height adjustment plate 32. A height scale line is provided on one side of the protrusion 262. A first magnetic encoder 6 that cooperates with the first magnet 5 is mounted on the base 1. The position of the first magnet 5 relative to the first magnetic encoder 6 changes as the height of the saw blade assembly 2 is adjusted by the cutting depth adjustment mechanism 3, so as to obtain accurate depth adjustment data. Since the cutting depth and cutting angle adjustment of the saw blade assembly 2 are both relative to the base 1, the first magnet 5 is mounted on the bolt fastener of the cutting depth adjustment mechanism 3, the second magnet 7 is mounted on the bolt fastener of the cutting angle adjustment mechanism 4, and the first magnetic encoder 6 and the second magnetic encoder 8 are both mounted on the base 1.

[0042] The cutting angle adjustment mechanism 4 is equipped with a second magnet 7 at its adjustment end. The cutting angle adjustment mechanism 4 includes a second base 41, an angle adjustment plate 42, and a second bolt fastener 43. A flip-up L-shaped plate 44 is hinged to the second base 41 by a pin. One end of the L-shaped plate 44 is mounted on the lower right side of the upper protective cover 26, and the other end of the L-shaped plate 44 is provided with a connecting hole 441. The angle adjustment plate 42 is provided with an angle adjustment hole 421, and an angle scale line is provided on one side of the angle adjustment hole 421. The second bolt fastener 43 passes through the angle adjustment hole 421 and the connecting hole 441 in sequence and is then locked by a nut. The angle of the saw blade assembly 2 can be adjusted by adjusting the angle position of the second bolt fastener 43 through the angle adjustment hole 421. The second magnet 7 is specifically mounted on the second bolt fastener 43. A second magnetic encoder 8 that cooperates with the second magnet 7 is mounted on the base 1. The second magnet 7 changes position relative to the second magnetic encoder as the cutting angle adjustment mechanism 4 adjusts the angle of the saw blade assembly 2 to obtain accurate angle adjustment data.

[0043] The cutting depth adjustment mechanism 3 and cutting angle adjustment mechanism 4 provided by this utility model both achieve the adjustment function of the saw blade assembly 2 by changing the position of the adjustment hole of the bolt fastener. The adjustment method is simple, fast and convenient to use. After adjustment, the cutting depth adjustment mechanism 3 and the cutting angle adjustment mechanism 4 can directly lock the saw blade assembly 2 without the need for other clamps. One structure serves multiple purposes and saves costs. This utility model also sets up a first magnet 5 and a first magnetic encoder 6 with magnetic cooperation to detect the height change of the cutting depth adjustment mechanism 3, and a second magnet 7 and a second magnetic encoder 8 with magnetic cooperation to detect the angle change of the cutting angle adjustment mechanism 4. The first magnetic encoder 6 and the second magnetic encoder 8 obtain specific adjustment data through magnetic field changes, realize precise adjustment of the saw blade assembly 2, and improve the adjustment effect. High-precision cutting depth adjustment helps to reduce saw blade wear and improve cutting quality. High-precision cutting angle adjustment can meet the needs of various angle beveling, optimize the cutting scheme, and improve material utilization. Furthermore, using appropriate cutting angles for splicing can enhance the connection strength of materials.

[0044] Both the first magnetic encoder 6 and the second magnetic encoder 8 are equipped with a display screen. The display screen uses a single-chip microcomputer to intuitively display the adjustment data. The data reading is intuitive and fast, and it is convenient for adjustment and use.

[0045] In summary, the cutting depth adjustment mechanism 3 and the cutting angle adjustment mechanism 4 of this invention can quickly and conveniently adjust the cutting depth and cutting angle of the saw blade assembly 2. The two sets of magnetic encoders, in conjunction with the magnets, can accurately detect changes in the cutting depth and cutting angle, resulting in high adjustment accuracy and good adjustment effect. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0046] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. An adjustable cutting angle and depth of cut circular saw characterized by: The application relates to a cutting machine, which comprises a base and a saw blade assembly, wherein a rectangular operation hole is arranged on the base; a cutting depth adjusting mechanism is arranged on the left side of the operation hole, a cutting angle adjusting mechanism is arranged on the right side of the operation hole, and the two sides of the saw blade assembly are respectively arranged on the cutting depth adjusting mechanism and the cutting angle adjusting mechanism, and the cutting end of the saw blade assembly extends to the lower end of the base through the operation hole. A first magnet is arranged on the adjusting end of the cutting depth adjusting mechanism, a first magnetic encoder matched with the first magnet is arranged on the base, the first magnet changes position relative to the first magnetic encoder with the change of the height of the saw blade assembly adjusted by the cutting depth adjusting mechanism, and accurate depth adjusting data is obtained. A second magnet is arranged on the adjusting end of the cutting angle adjusting mechanism, a second magnetic encoder matched with the second magnet is arranged on the base, the second magnet changes position relative to the second magnetic encoder with the change of the angle of the saw blade assembly adjusted by the cutting angle adjusting mechanism, and accurate angle adjusting data is obtained.

2. The adjustable cutting angle and depth of cut circular saw of claim 1, wherein, The saw blade assembly comprises a casing, a driving motor is arranged at the rear end of the casing, a circular saw blade is arranged at the front end of the casing, and a central rotating shaft is arranged through the circular saw blade.

3. The adjustable cutting angle and depth of cut circular saw of claim 2, wherein: A semicircular upper protective cover is formed at the front end of the casing, the upper protective cover protects the outside of the upper end of the circular saw blade, a semicircular lower protective cover is arranged outside the lower end of the circular saw blade, an installation ring is arranged at the rear end of the lower protective cover, and the installation ring is rotatably sleeved on the central rotating shaft through a rotating connecting piece.

4. The adjustable cutting angle and depth of cut circular saw of claim 3, wherein: The size of the lower protective cover is smaller than that of the upper protective cover, the lower protective cover is rotatably arranged in the upper protective cover to expose the cutting position of the lower end of the circular saw blade.

5. The adjustable cutting angle and depth of cut circular saw of claim 4, wherein: A tension spring is arranged between the upper protective cover and the lower protective cover, and the tension spring is used for pulling the lower protective cover to automatically reset.

6. The adjustable cutting angle and depth of cut circular saw of claim 4, wherein: A handle is arranged at the front end of the lower protective cover, and a rotating limiting plate is arranged at the side end of the lower protective cover.

7. The adjustable cutting angle and depth of cut circular saw of claim 3, wherein: The cutting depth adjusting mechanism comprises a first base, a height adjusting plate arranged on the first base and a first bolt fastener, and a height adjusting hole is arranged on the height adjusting plate. An installation hole is arranged at the rear end of the upper protective cover, the head of the first bolt fastener is arranged in the upper protective cover, the first bolt fastener is sequentially arranged through the installation hole and the height adjusting hole, and is locked through a nut. An adjusting handle is arranged at the outer end of the first bolt fastener.

8. The adjustable cutting angle and depth of cut circular saw of claim 7, wherein: A convex part corresponding to the shape of the height adjusting plate is arranged at the rear end of the upper protective cover, and a height scale is arranged on one side of the convex part.

9. The adjustable cutting angle and depth of cut circular saw of claim 1, wherein: The cutting angle adjusting mechanism comprises a second base, an angle adjusting plate and a second bolt fastener, a reversible L-shaped plate is hingedly connected to the second base through a pin shaft, one end of the L-shaped plate is arranged at the right lower end of the upper protective cover, and the other end of the L-shaped plate is provided with a connecting hole. An angle adjusting hole is arranged on the angle adjusting plate, an angle scale is arranged on one side of the angle adjusting hole, and the second bolt fastener is sequentially arranged through the angle adjusting hole and the connecting hole and is locked through a nut.

10. The adjustable cutting angle and depth of cut circular saw of claim 1, wherein: Display screens are arranged on the first magnetic encoder and the second magnetic encoder, and a single-chip microcomputer is arranged on the display screen and is used for directly displaying the adjusting data.

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