Groove cutting device with adjustable width

Abstract

The utility model discloses a width-adjustable groove cutting device, which belongs to the field of cutting machines and comprises a protective cover, motors are fixedly connected to the outer walls of two opposite sides of the protective cover, and through holes for motor shafts of the motors to penetrate through are formed in the two opposite sides of the protective cover; the motor shaft is in a step shape and comprises a shaft head and a shaft shoulder which are located in the protective cover, and an adjusting shaft sleeve, a cutting piece and a locking nut are sequentially installed on the shaft head in the direction away from the shaft shoulder. The protective cover is further provided with a notch used for exposing the two cutting blades. The grooving device is simple in structure and convenient to disassemble and assemble, the size and shape precision of grooving can be guaranteed at the same time, and the width of the groove can be adjusted conveniently.

Description

Technical Field

[0001] This utility model relates to the field of cutting technology, and in particular to an adjustable-width groove cutting device. Background Technology

[0002] Currently, people often use handheld cutting machines to cut materials. During the cutting process, the internal motor drives the cutting blade to rotate, which can cut materials such as wood or tiles. The cut tiles can be used for floor paving, while the cut wood can be used for furniture production or manufacturing.

[0003] In the existing technology, handheld cutting machines usually only include one cutting blade, so a single cutting action can only cut a slit in the material, which has little impact on the cutting of materials.

[0004] However, when grooving is required in materials, existing handheld cutting machines require two cutting operations to complete the grooving task. This method is not only inefficient but also results in insufficient grooving precision due to directional errors in the two cuts. Especially for large-volume grooving operations, the inefficiency and insufficient precision of existing handheld cutting machines become increasingly severe as working hours increase. Utility Model Content

[0005] In view of the problems of low efficiency and insufficient grooving accuracy of existing cutting machines in grooving operations, the purpose of this utility model is to provide an adjustable width grooving cutting device to at least partially solve the above problems.

[0006] To achieve the above objectives, the technical solution of this utility model is as follows:

[0007] An adjustable-width groove cutting device includes a protective cover. Motors are fixedly connected to the outer walls of two opposite sides of the protective cover. Through holes are provided on both opposite sides of the protective cover for the motor shaft to pass through. The motor shaft is stepped and includes a shaft head and a shoulder located inside the protective cover. An adjusting bushing, a cutting blade, and a locking nut are sequentially installed on the shaft head in a direction away from the shoulder. The protective cover also has notches for exposing the two cutting blades.

[0008] In a preferred embodiment, a keyway is provided on the shaft head, and the cutting blade is fixedly connected to the motor shaft by the key, the length of the key being adapted to the width of the cutting blade.

[0009] In a preferred embodiment, the motor shafts of the two motors are coaxial.

[0010] In a preferred embodiment, the protective cover is cylindrical, and the axis of the protective cover is collinear with the axis of the motor shaft.

[0011] In a preferred embodiment, the notch is formed on the circumferential sidewall of the protective cover, the notch is rectangular, and the notch extends to both end faces of the protective cover.

[0012] In a preferred embodiment, the outer wall of the shaft head is covered with external threads that are compatible with the locking nut.

[0013] In a preferred embodiment, the adjusting bushing includes a plurality of positioning rings.

[0014] In a preferred embodiment, the positioning ring has several width specifications, each width specification including one or more of the positioning rings.

[0015] The beneficial effects of this utility model using the above technical solution are as follows: By installing two opposing motors on a protective cover, and sequentially installing an adjusting bushing, a cutting blade, and a locking nut on the motor shaft bushing, this utility model can not only simultaneously cut two parallel slits in the material to complete a high-precision grooving operation, but also control the distance between the two cutting blades by changing the adjusting bushings of different lengths, thereby adjusting the grooving width. Furthermore, the cutting device provided by this utility model also has the advantages of simple structure and convenient assembly and disassembly. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0017] Figure 2 This is a side view of Embodiment 1 of the present utility model;

[0018] Figure 3 This is a schematic diagram of the adjusting bushing in Embodiment 2 of this utility model.

[0019] In the diagram: 1-protective cover, 2-motor, 3-cutting blade, 4-motor shaft, 5-adjusting bushing, 6-locking nut, 7-keyway, 8-key, 9-positioning ring. Detailed Implementation

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0021] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the description of the structure of this utility model shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] The terms "first" and "second" in this technical solution are merely designations for corresponding structures that are identical or similar, or that perform similar functions. They do not represent an arrangement of the importance of these structures, nor do they imply any ranking, comparison of size, or other meaning.

[0023] Furthermore, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two structures. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the overall concept and the specific context of the solution.

[0024] Example 1

[0025] like Figure 1 and Figure 2 As shown, this utility model embodiment provides an adjustable width groove cutting device, including a protective cover 1, a motor 2 and a cutting blade 3.

[0026] The protective cover 1 is configured as a metal cylindrical structure, with motors 2 arranged at both ends of the protective cover 1 along its axial direction. The left and right sidewalls of the protective cover 1 are detachably and fixedly connected to the housing of the motors 2 by screws. Furthermore, the axis of the protective cover 1 is aligned with the axes of the two motors 2. Simultaneously, through holes are provided on the left and right sidewalls of the protective cover 1 to allow the motor shafts 4 of the two motors 2 to pass through these holes into the interior of the protective cover 1.

[0027] Motor 2 is powered by a cable. A switch button (not shown in the figure) is usually fixedly installed on the casing of motor 2. When in use, the power on and off state of motor 2 can be controlled by operating the switch button.

[0028] In this embodiment, the motor shafts 4 of the two motors 2 are both stepped, including a shaft head and a shaft shoulder, and both the shaft head and the shaft shoulder are located inside the protective cover 1. For each motor shaft 4, an adjusting bushing 5, a cutting disc 3, and a locking nut 6 are sequentially installed on its shaft head in the direction away from the shaft shoulder.

[0029] The shaft head has a keyway 7 along its axial direction, starting at the end of the shaft head and ending at the shaft shoulder. The cutting blade 3 is fixedly connected to the shaft head by a key 8, the length of which is approximately the same as the width of the cutting blade 3. An adjusting sleeve 5 is fitted onto the shaft head, with a clearance fit between the inner wall of the adjusting sleeve 5 and the outer wall of the shaft head. The two ends of the adjusting sleeve 5 abut against the shaft shoulder and the cutting blade 3, respectively. The outer wall of the shaft head is covered with external threads that match the locking nut 6, allowing the cutting blade 3 to be tightened by screwing on the locking nut 6.

[0030] The protective cover 1 also has a notch for exposing two cutting blades 3. The notch is specifically opened on the circumferential side wall of the protective cover 1 and is configured to be rectangular. The notch extends to the two end faces of the protective cover 1.

[0031] In use, two motors 2 drive two cutting blades 3 to rotate respectively, and by replacing the adjusting bushings 5 ​​with different lengths, the distance between the two cutting blades 3 can be changed, thereby cutting grooves of different widths.

[0032] Typically, the gap between the ends of the two motor shafts 4 is wider than the width (axial length) of the locking nut 6. This allows the locking nut 6 to be removed when adjusting the width of the two cutting blades 3. Of course, the thinner cutting blades 3 can also be removed. Then, the screws connecting the protective cover 1 and the motor 2 can be removed, and the motor shaft 4 can be removed from the protective cover 1. The adjusting bushing 5 can then be replaced, and the motor 2 and the protective cover 1 can be re-fixed. Finally, the cutting blades 3 and the locking nut 6 can be installed.

[0033] Example 2

[0034] In this embodiment, as Figure 3 As shown, the adjusting bushing 5 includes several positioning rings 9, each positioning ring 9 having the same inner and outer diameter. Typically, the width (axial length) of each positioning ring 9 is the same. Thus, during use, the axial length of the adjusting bushing 5 can be changed by increasing or decreasing the number of positioning rings 9, thereby changing the distance between the two cutting blades 3 and cutting grooves of different widths.

[0035] Of course, each positioning ring 9 can also be configured with a different width. For example, there are multiple width specifications for the positioning rings, and each width specification has one or more positioning rings 9. When in use, by selecting the appropriate width specification and the corresponding number of positioning rings 9, the required length of the adjusting bushing 5 can be combined.

[0036] With this setup, when adjusting the distance between the two cutting blades 3, it is not necessary to remove the screws between the motor 2 and the protective cover 1 to remove and replace the shorter positioning ring from the gap between the two motor shafts 4.

[0037] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and alterations to these embodiments without departing from the principles and spirit of this utility model will still fall within the protection scope of this utility model.

Claims

1. An adjustable-width groove cutting device, characterized in that: The device includes a protective cover, on which motors are fixedly connected to the outer walls of two opposite sides. Each opposite side of the protective cover has through holes for the motor shaft to pass through. The motor shaft is stepped, and includes a shaft head and a shoulder located inside the protective cover. An adjusting bushing, a cutting blade, and a locking nut are sequentially installed on the shaft head in a direction away from the shoulder. The protective cover also has notches for exposing the two cutting blades.

2. The adjustable width groove cutting device according to claim 1, characterized in that: A keyway is provided on the shaft head, and the cutting blade is fixedly connected to the motor shaft by the key. The length of the key is adapted to the width of the cutting blade.

3. The adjustable width groove cutting device according to claim 1, characterized in that: The motor shafts of the two motors are coaxial.

4. The adjustable width groove cutting device according to claim 3, characterized in that: The protective cover is cylindrical, and the axis of the protective cover is collinear with the axis of the motor shaft.

5. The adjustable width groove cutting device according to claim 4, characterized in that: The notch is formed on the circumferential sidewall of the protective cover, the notch is rectangular, and the notch extends to both end faces of the protective cover.

6. The adjustable width groove cutting device according to claim 1, characterized in that: The outer wall of the shaft head is covered with external threads that are compatible with the locking nut.

7. The adjustable width groove cutting device according to claim 1, characterized in that: The adjusting bushing includes several positioning rings.

8. The adjustable width groove cutting device according to claim 7, characterized in that: The positioning ring has several width specifications, and each width specification includes one or more positioning rings.

Images