CN115338676A

CN115338676A - Cutting tool

Info

Publication number: CN115338676A
Application number: CN202211061953.XA
Authority: CN
Inventors: 但未英; 刘昊; 陆松松
Original assignee: Jiangsu Dartek Technology Co Ltd
Current assignee: Jiangsu Dartek Technology Co Ltd
Priority date: 2022-09-01
Filing date: 2022-09-01
Publication date: 2022-11-15
Anticipated expiration: 2042-09-01
Also published as: CN115338676B

Abstract

The application relates to a cutting tool, the scheme includes: a housing; a motor at least partially housed within the housing; a base plate connected to the housing; the brush roll is rotatably connected to the front end of the bottom plate, a cleaning piece is arranged on the outer side wall of the brush roll, and the length of the cleaning piece is longer than the shortest distance from the side wall of the brush roll to the end wall of the bottom plate; the cutting device also comprises a driving device for driving the brush roller to rotate; thereby realizing the effect of improving the sawing precision.

Description

Cutting tool

Technical Field

The application relates to saw cut device technical field, especially relates to cutting means.

Background

With the development of cutting tool technology, the requirement on the cutting precision of a cutting tool is higher and higher, and therefore, a ruler is fixed on a base plate of the cutting tool, so that the cutting position of the cutting tool is accurately positioned.

In the related art, chinese patent publication No. CN105034058A discloses a cutting tool, which includes: the saw blade is arranged in the opening, extends out of the lower part of the bottom plate, and is connected with a T-shaped guide device at one end of the bottom plate.

However, when the existing cutting tool is used, saw dust generated by sawing is lifted and easily falls on a scale of the bottom plate, so that the line of sight is influenced, and the cutting precision is reduced.

Disclosure of Invention

Accordingly, it is necessary to provide a cutting tool for solving the problem of low cutting accuracy.

In order to solve the technical problem, the present application is implemented as follows:

in one embodiment, there is provided a cutting tool comprising:

a housing;

a motor at least partially housed within the housing;

a base plate connected to the housing;

the brush roll is rotatably connected to the front end of the bottom plate, a cleaning piece is arranged on the outer side wall of the brush roll, and the length of the cleaning piece is longer than the shortest distance from the side wall of the brush roll to the end wall of the bottom plate; the cutting device also comprises a driving device for driving the brush roller to rotate.

Optionally, the driving device comprises a driving wheel connected to the end part of the brush roll, and the bottom plate is provided with a yielding groove for the driving wheel to pass through; when the bottom plate is placed on the surface of the workpiece to be cut, the driving wheel is abutted against the surface of the workpiece to be cut.

Optionally, the device further comprises a speed change component for regulating the output speed of the driving device; the transmission ratio of the transmission assembly is at most 1.

Optionally, the outer side wall of the driving wheel is formed with walking teeth, and the speed change assembly comprises a speed change gear, and the speed change gear is meshed with the walking teeth.

Optionally, a chip falling port is formed in the surface of the bottom plate, and when the cleaning direction of the brush roll faces the shell, the chip falling port is located on one side, close to the shell, of the brush roll.

Optionally, a shield is arranged on the machine shell, the cleaning pieces form a row along the length direction of the brush roll, the cleaning pieces in the same row are spirally distributed along the peripheral wall of the brush roll, and the scrap falling port is positioned at one end of the brush roll close to the shield and at one side of the brush roll close to the shell.

Optionally, the cleaning members are arranged in rows along the length of the roller, and the cleaning members are arranged in a spiral along the perimeter of the roller when the cleaning direction of the roller is away from the housing.

Alternatively, the driving means may include a drive bevel gear driven by a motor, a driven bevel gear engaged with the drive bevel gear, a driving rod provided at the center of the driven bevel gear, a worm provided at an end of the driving rod, and a worm wheel provided on the brush roller, the worm being engaged with the worm wheel to drive the brush roller to rotate.

Optionally, the system further comprises a speed change assembly for regulating the output speed of the driving device; the transmission ratio of the transmission assembly is at least 1.

Optionally, the cleaning members form rows along the length of the brush roll, and the cleaning members are arranged in a plurality of rows along the circumference of the brush roll; the cleaning elements in the same row are distributed helically along the peripheral wall of the brush roll.

In this application embodiment, rotate through drive arrangement drive brush roll to the cleaning member that drives on the brush roll cleans the scale of bottom plate and bottom plate tip, thereby has reduced the piece and has sheltered from the saw cutting skew that leads to the scale, has effectively improved the precision of saw cutting.

Drawings

FIG. 1 is a schematic view of an embodiment of a cutting tool according to the present application;

FIG. 2 is a schematic view of a brush roll configuration according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a brush roll configuration according to another embodiment of the present application;

FIG. 4 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 5 is a schematic view of the overall structure of a cutting tool according to another embodiment of the present application;

FIG. 6 is an enlarged schematic view of the structure at B in FIG. 5;

FIG. 7 is a schematic view of the overall structure of a cutting tool according to another embodiment of the present application;

fig. 8 is an enlarged schematic view of the structure at C in fig. 7.

Reference numerals: 1. a housing; 10. a shield; 2. a motor; 3. a base plate; 30. scale marks are arranged on the scale; 300. a support plate; 31. a brush roll; 311. a cleaning member; 32. a yielding groove; 33. a chip removal port; 331. a notch; 4. a drive device; 41. a drive wheel; 410. a drive shaft; 411. a walking tooth; 5. a speed change assembly; 51. a speed change gear.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

Referring to fig. 1, fig. 1 shows a schematic view of a cutting tool in an embodiment of the present application, which provides a cutting tool, including a housing 1, a motor 2, a base plate 3 and a driving device 4, wherein the housing 1 may be hinged on the base plate 3 and may rotate around a hinge shaft, or may be directly fixed on the base plate 3 and may not rotate. The motor 2 is configured to be at least partially accommodated in the housing 1, a saw blade is configured on an output shaft of the motor 2, the saw blade is driven by the motor 2 to rotate, a saw cutting opening for the saw blade to pass through can be formed on the bottom plate 3, and a shield 10 for shielding the saw blade can be formed on the housing 1.

The front end of the bottom plate 3 in the advancing direction is provided with the scale scales 30, one side of the bottom plate 3 in the scale scales 30 is provided with a support plate 300, the support plate 300 is rotatably connected with a brush roll 31, and the brush roll 31 can be arranged along the width direction of the bottom plate 3. Of course, the support plate 300 may also be fixed on the bottom plate 3 by other methods such as welding, and the brush roller 31 may be located above the bottom plate 3 or above the front of the bottom plate 3. The outer side wall of the brush roller 31 is connected with a cleaning member 311, and the cleaning member 311 may be bristles or a brush sheet made of an elastic material, such as a rubber sheet made of rubber; the length of the cleaning member 311 may be longer than the shortest distance of the outer side wall of the brush roller 31 from the end wall of the base plate 3, and in this case the length of the cleaning member 311 is the length in the radial direction of the brush roller 31 so that the cleaning member 311 can brush the scale markings 30 sufficiently. The cleaning pieces 311 can be arranged in a row along the length of the brush roller 31, when the cleaning pieces 311 are bristles, a gap exists between every two adjacent bristles, so that the scale marks 30 at the front end of the bottom plate 3 can be seen through the gap between the bristles; the brush roller 31 is driven to rotate by the driving device 4, and the cleaning member 311 is driven to clean the surface of the bottom plate 3 during the rotation of the brush roller 31.

Referring to fig. 2, fig. 2 shows a structure of the brush roller according to an embodiment of the present invention when the cleaning members are bristles, and optionally, in consideration of cleaning effect, the cleaning members 311 may be distributed in a plurality of rows in the circumferential direction of the brush roller 31, and the cleaning members 311 may be uniformly distributed on the outer side wall of the brush roller 31; sufficient clearance is reserved between the rows of bristles to enable the scale markings 30 to be seen clearly. Preferably, in order to improve the sweeping ability of the cleaning members 311 to the debris, the cleaning members 311 in the same row may be spirally distributed along the length of the brush roll 31, and when the brush roll 31 rotates, the cleaning members 311 can act to urge the debris toward either end of the brush roll 31.

Referring to fig. 3, fig. 3 shows the structure of the brush roll of the embodiment of the present invention when the cleaning members are brush sheets, however, it should be understood that the cleaning members 311 may be spirally distributed from the center point of the brush roll 31 to both ends, and the cleaning members 311 may transport the debris to both ends when the brush roll 31 rotates, as long as the debris generated by sawing can be pushed to some extent in the axial direction of the brush roll 31.

Referring to fig. 4, fig. 4 shows a structure of an end portion of a brush roller according to an embodiment of the present invention, and optionally, the driving device 4 includes a driving wheel 41 connected to an end portion of the brush roller 31, and the bottom plate 3 is provided with an avoiding groove 32, through which the driving wheel 41 can pass the avoiding groove 32; when the bottom plate 3 is placed on the surface of the workpiece to be cut, the driving wheel 41 can abut against the surface of the workpiece to be cut, and the driving rotation of the brush roller 31 is realized through the driving wheel 41 matching with the speed change assembly 5. The drive wheel 41 may be directly connected to the end of the brush roll 31, with the brush roll 31 rotating concentrically with the drive wheel 41, so that the cleaning members 311 on the brush roll 31 brush the debris in a direction towards the housing 1.

Referring to fig. 5 and 6, fig. 5 shows the structure of the driving device in another embodiment of the present application, and further, in order to adjust the output speed of the driving device 4, the cutting tool may further include a speed changing assembly 5, and the speed changing assembly 5 may be connected between the driving wheel 41 and the brush roller 31 so as to adjust the speed of the driving wheel 41 transmitted to the brush roller 31. The speed changing assembly 5 may include a plurality of speed changing gears 51, and the number of the speed changing gears may be an odd number or an even number, and only needs to be adapted to the cleaning direction of the brush roller 31. The cleaning direction of the brush roller 31 is defined as: when the driving wheels 41 are directly connected to both ends of the brush roller 31, the driving wheels 41 drive the brush roller 31 to rotate, and the cleaning member 311 brushes the debris in a direction toward. When the bottom plate 3 is pushed forward, the cleaning member 311 brushes the debris toward the housing 1, that is, the cleaning direction is the direction toward the housing 1. Accordingly, when the drive wheel 41 is rotated in the reverse direction, the cleaning member 311 brushes the debris in a direction away from the housing 1, which is defined as a cleaning direction away from the housing 1.

Since the transmission assembly 5 may include a plurality of transmission gears 51, two and three transmission gears 51 will be described as an example. When the number of the speed change gears 51 is two, one speed change gear 51 may be connected to the brush roller 31, the driving shaft 410 may be connected to the center of the driving wheel 41, and the other speed change gear 51 may be connected to the driving shaft 410. The two speed change gears 51 are engaged with each other, and the rotation speed of the driving wheel 41 is changed to be the power for rotating the brush roller 31. At this time, the brush roller 31 rotates in the opposite direction to the driving wheel 41, i.e., the cleaning member 311 of the brush roller 31 brushes the debris in a direction away from the housing 1.

When the speed changing assembly 5 includes three speed changing gears 51, one speed changing gear 51 may be connected to the brush roller 31, the center of the driving wheel 41 may be connected to the transmission shaft 410, the other speed changing gear 51 may be connected to the transmission shaft 410, and the remaining one speed changing gear 51 is located between the speed changing gear 51 of the brush roller 31 and the speed changing gear 51 of the transmission shaft 410 and is engaged with both the speed changing gear 51 of the brush roller 31 and the speed changing gear 51 of the transmission shaft 410, so as to change the rotation speed of the driving wheel 41 to be the power for rotating the brush roller 31. At this time, the brush roller 31 rotates in the same direction as the driving wheel 41, and therefore, the cleaning member 311 of the brush roller 31 brushes the debris toward the direction close to the housing 1.

Referring to fig. 7 and 8, fig. 7 shows the structure of the driving device in another embodiment of the present application, in another embodiment, the outer side wall of the driving wheel 41 is formed with walking teeth 411, the walking teeth 411 can be evenly distributed on the outer side wall of the driving wheel 41, when walking through the walking teeth 411, the probability that the saw is deflected due to bumpy caused by pressing debris when walking on the driving path can be reduced. At this time, the number of gears of the speed changing assembly 5 may be one, and when the number of the speed changing gears 51 is one, the driving gear is engaged with the speed changing gears 51. At this time, the brush roller 31 rotates in the opposite direction to the driving wheel 41, i.e., the cleaning member 311 of the brush roller 31 brushes the debris in a direction away from the housing 1.

When the speed changing assembly 5 includes two speed changing gears 51, one speed changing gear 51 may be connected to the brush roller 31, and one side of the other speed changing gear 51 may be engaged with both the speed changing gear 51 on the brush roller 31 and the traveling teeth 411, so as to change the rotation speed of the driving wheel 41 into the power for rotating the brush roller 31. At this time, the brush roller 31 rotates in the same direction as the driving wheel 41, and therefore, the cleaning member 311 of the brush roller 31 brushes the debris toward the housing 1. When the number of the speed change gears 51 is plural, similar to the above case, the description will be omitted.

Of course, when the number of the speed changing gears 51 in the speed changing assembly 5 is greater than or equal to 1, the driving wheel 41 with the traveling teeth 411 may be a driving gear no matter whether the number of the speed changing gears 51 is odd or even, and in this case, one speed changing gear 51 may be saved, or the driving gear may be directly used as one of the speed changing gears 51. Therefore, no matter the number of gears in the transmission assembly 5 can be set by those skilled in the art in combination with the specific situation, as long as it is sufficient that the transmission ratio of the transmission assembly 5 is 1 or less and the cleaning member 311 is made to brush at least once per 0.1 meter of forward movement of the bottom plate 3.

Referring to fig. 1 and 6, alternatively, when the sweeping direction is toward the housing 1, i.e. the rotation direction of the brush roll 31 and the driving wheel 41 is the same, the bottom plate 3 is opened with a clearance 33, and the clearance 33 is located at one side of the brush roll 31 close to the housing 1 and at one end of the brush roll 31 close to the shield 10. At this time, the cleaning members 311 of the brush roller 31 are spirally directed to brush the chips on the base plate 3 toward the exhaust port 33. Notches 331 are formed in the two ends, located at the brush roll 31, of the two sides of the bottom plate 3, and the notches 331 penetrate through the bottom plate 3 along the thickness of the bottom plate 3; thus, the chips can be swept towards the chip removal opening 33, and can be left in the groove formed by the chip removal opening 33 and the surface of the workpiece to be cut in the sawing process, and can fall off and be discharged from the chip removal opening 33 after the sawing process is finished, so that the accumulation of the chips on the surface of the bottom plate 3 is reduced. Of course, the cleaning member 311 of the brush roll 31 may not be spirally distributed along the outer sidewall of the brush roll 31, and the length of the chip removal port 33 is substantially equal to the length of the cleaning member 311, so long as the surface of the scale 30 can be cleaned during the rotation of the brush roll 31, the chips can be temporarily retained, and the chips can be removed from the chip removal port 33.

Alternatively, when the sweeping direction is away from the housing 1, i.e., the rotation direction of the brush roller 31 is opposite to that of the driving wheel 41, the brush roller 31 may be located at the front end of the base plate 3, i.e., the end of the base plate 3 extends forward to form a support plate 300, and the brush roller 31 is rotatably connected to the support plate 300. Preferably, the length of the cleaning member 311 may be greater than the shortest distance from the outer side wall of the brush roller 31 to the plane of the bottom surface of the bottom plate 3, so that the cleaning member 311 can extend to the surface of the workpiece to be cut, and the spiral distribution of the cleaning member 311 can sweep the front end of the bottom plate 3 and the debris in front of the bottom plate 3 toward one end or both ends, thereby reducing the accumulation of debris on the bottom plate 3.

Alternatively, in consideration of the sawing direction, the above-mentioned brush roller 31 and the driving wheel 41 can be combined in the same or opposite rotation direction, that is, the exhaust port 33 is provided, and the brush roller 31 is provided at the front end of the base plate 3 and extends the cleaning member 311, which will not be described in detail herein.

In another embodiment, the brush roller 31 may be driven by the motor 2 in the cutting tool, and the driving means 4 may specifically include a drive bevel gear, a driven bevel gear, a driving rod, a worm, and a worm wheel. The drive bevel gear can be connected on the output shaft of the motor 2 and can be decelerated through the speed reducing mechanism of the motor 2, the driven bevel gear is meshed with the drive bevel gear, and the transmission rod can penetrate through and be connected to the center of the driven bevel gear. A worm may be connected to an end of the drive rod remote from the driven bevel gear and a worm gear may be connected to the brush roller 31 and engaged with the worm. At the moment, the motor 2 drives the driving bevel gear to rotate, the driven bevel gear rotates along with the driving bevel gear, and the worm drives the worm gear to rotate under the transmission of the transmission rod, so that the brush roller 31 rotates.

Of course, it is understood that other gear matching or transmission modes can be adopted to drive the brush roller 31 by the motor 2, as long as the motor 2 can drive the brush roller 31 to rotate. In addition, in order to match the rotation speed difference between the brush roller 31 and the motor 2, the cutting tool further comprises a speed changing component 5, for example, a speed reducing mechanism is arranged at the front end of the drive bevel gear, the speed reducing mechanism of the embodiment is preferably 100, as long as the speed reducing mechanism can be matched with the cleaning piece 311 on the brush roller 31 to clean the scale marks 30 on the bottom plate 3; or the speed reducing mechanism is combined into the output shaft end of the motor 2 inside the housing 1 to reduce the speed of the brush roller 31, which is also a conventional technical means of those skilled in the art, as long as the speed change ratio of the speed change assembly 5 is at least 1 to search the brush roller 31, and the bottom plate 3 is cleaned by the cleaning member 311 on the brush roller 31, which is not described herein again.

The working principle of a cutting tool in the embodiment of the application is as follows:

in the advancing process of the bottom plate 3, the brush roller 31 is driven by the driving device 4 to rotate, the brush roller 31 drives the cleaning piece 311 to rotate, so that the surface of the bottom plate 3 is cleaned, the accumulation of chips generated by sawing on the surface of the bottom plate 3 is reduced, the cleanliness of the surface of the bottom plate 3 is improved, and the sawing precision is improved.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims

1. A cutting tool, comprising:

a housing (1);

the motor (2) is at least partially accommodated in the shell (1);

a base plate (3) connected to the housing (1);

the cleaning device is characterized in that the front end of the base plate (3) is rotatably connected with a brush roll (31), a cleaning piece (311) is arranged on the outer side wall of the brush roll (31), and the length of the cleaning piece (311) is longer than the shortest distance from the side wall of the brush roll (31) to the end wall of the base plate (3); the cutting device also comprises a driving device (4) for driving the brush roller (31) to rotate.

2. The cutting tool according to claim 1, wherein the driving means (4) comprises a driving wheel (41) connected to an end of the brush roller (31), and the base plate (3) is provided with an avoiding groove (32) for the driving wheel (41) to pass through; when the base plate (3) is placed on the surface of a workpiece to be cut, the driving wheel (41) abuts against the surface of the workpiece to be cut.

3. The cutting tool according to claim 2, further comprising a speed change assembly (5) for regulating the output speed of the drive means (4); the transmission ratio of the transmission assembly (5) is at most 1.

4. A cutting tool according to claim 3, wherein the driving wheel (41) is formed with a running tooth (411) on its outer side wall, and the speed change assembly (5) comprises a speed change gear (51), the speed change gear (51) being intermeshed with the running tooth (411).

5. The cutting tool according to claim 1, characterized in that the bottom plate (3) is provided with a chip removal opening on the surface, and the chip removal opening is located on the side of the brush roll (31) close to the housing (1) when the cleaning direction of the brush roll (31) is towards the housing (1).

6. The cutting tool according to claim 5, characterized in that a shield (10) is provided on the housing, the cleaning elements (311) are arranged in a row along the length of the roller brush (31), the cleaning elements (311) in the same row are helically distributed along the circumferential wall of the roller brush (31), and the chip removal opening is provided at one end of the roller brush (31) adjacent to the shield (10) and at one side of the roller brush (31) adjacent to the housing (1).

7. The cutting tool according to claim 1, characterized in that the cleaning elements (311) are arranged in a row along the length of the brush roller (31), and that the cleaning elements (311) of the same row are arranged helically along the circumferential wall of the brush roller (31) when the cleaning direction of the brush roller (31) is directed away from the housing (1).

8. The cutting tool according to claim 1, wherein the driving means (4) comprises a drive bevel gear driven by the motor (2), a driven bevel gear engaged with the drive bevel gear, a transmission rod provided at the center of the driven bevel gear, a worm provided at the end of the transmission rod, and a worm wheel provided on the brush roller, the worm being engaged with the worm wheel to drive the brush roller to rotate.

9. The cutting tool according to claim 8, further comprising a speed change assembly (5) for regulating the output speed of the drive means (4); the transmission ratio of the transmission assembly (5) is at least 1.

10. The cutting tool according to claim 1, wherein the cleaning members (311) are formed in rows along the length of the brush roll (31), the cleaning members (311) being arranged in a plurality of rows along the circumference of the brush roll (31); the cleaning members (311) in the same row are spirally distributed along the peripheral wall of the brush roller (31).