Internal gear ring cutting machine

Abstract

The utility model discloses an internal tooth ring cutting machine, a saw blade is annular and comprises external teeth arranged on the outer side edge and internal teeth arranged on the inner side edge, and the external teeth are used for cutting; the inner teeth are meshed with the driving gear; the transmission assembly comprises a transmission shaft and a first bevel gear, and the driving gear and the first bevel gear are fixedly arranged at the two ends of the transmission shaft respectively; the output assembly comprises an output shaft and a second bevel gear which are fixedly connected, and the first bevel gear and the second bevel gear are in meshing transmission. The saw blade has the advantages that the transmission mode that the inner teeth are meshed with the driving gear is adopted to replace an original hard friction transmission mode, the transmission effect of the saw blade is improved, and the defect that the saw blade is prone to slipping is overcome; and secondly, the compression wheel on the side face is fixed through a gear transmission mode, adjustment is not needed after the saw blade is replaced, the difficulty of replacing and adjusting the saw blade and the compression wheel is reduced, and rapidness and effectiveness are achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of cutting machines, and in particular to an internal tooth ring cutting machine. Background Technology

[0002] Electric handheld cutting machines are suitable for building decoration and stone processing, and are used for cutting and grooving brittle non-metallic materials containing silicates such as terrazzo, marble, granite, glass, and cement slabs. They offer advantages such as high cutting efficiency, good processing quality, ease of use, and low labor intensity. They are one of the most commonly used cutting tools among power tools, requiring the user to hold them with both hands. Currently, electric handheld cutting machines use a hard friction method between the saw blade and guide wheel. With repeated use and extended periods, both the saw blade and guide wheel will wear down, requiring constant adjustment of the contact position. This results in low transmission efficiency, slippage, rapid wear, and cumbersome saw blade replacement and adjustment. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a cutting machine with an internal gear transmission method.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: an internal tooth ring cutting machine, including a saw blade, the saw blade being annular, comprising external teeth disposed on the outer edge and internal teeth disposed on the inner edge, the external teeth being used for cutting; a drive gear, the internal teeth meshing with the drive gear; a transmission assembly, the transmission assembly including a transmission shaft and a first helical gear, the drive gear and the first helical gear being respectively fixedly disposed at both ends of the transmission shaft; and an output assembly including a fixedly connected output shaft and a second helical gear, the first helical gear meshing with the second helical gear for transmission.

[0005] Preferably, the saw blade has an annular groove track along its two circumferential sides.

[0006] Preferably, the blade includes a pressure wheel with a protrusion on its surface. Two pressure wheels are fixedly disposed on both sides of the saw blade as a group, and the protrusion is pressed into the track to roll.

[0007] Preferably, it includes a water-blocking assembly disposed on the side edge of the saw blade, the water-blocking assembly including an upper water-blocking plate and a lower water-blocking plate that are flipped up.

[0008] Preferably, it includes a water outlet assembly, which further includes a water outlet and a water outlet pipe connected to each other; the water outlet is located on one side of the saw blade and below the transmission assembly.

[0009] Preferably, it includes a water guiding component, which includes a water guiding plate and a partition plate; the water guiding plate and the partition plate are fitted together inside the ring of the saw blade, and the cut-out portion of the water guiding plate along the edge and the partition plate are fitted together to form a flow guiding section.

[0010] Preferably, it also includes a housing, a handheld part, and a handle.

[0011] Preferably, the tracks are two concentric circles arranged on the side of the saw blade.

[0012] Preferably, the protrusion is two spaced-apart annular strip protrusions, and the spacing corresponds to the spacing between the two tracks, with the two protrusions rolling within the two tracks respectively.

[0013] Preferably, there are two sets of clamping wheels, located above and below the drive gear, respectively.

[0014] The beneficial effects of this utility model are as follows: First, by setting a transmission method in which the internal teeth mesh with the drive gear, the original hard friction transmission method is replaced, which improves the transmission effect of the saw blade and overcomes the defect of easy slippage; Second, the gear transmission method makes the side pressure wheel fixed, so there is no need to adjust it after the saw blade is replaced, which reduces the difficulty of replacing and adjusting the saw blade and the pressure wheel, and achieves quick and effective results. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the drive gear of an internal gear ring cutter proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the transmission component and output component proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the partition proposed in this utility model;

[0018] Figure 4 This is a schematic diagram of the water guide plate proposed in this utility model;

[0019] Figure 5 This is a schematic diagram of the existing hard friction method for cutting machines proposed in this utility model;

[0020] Figure 6 This is a schematic diagram of another perspective on the existing hard friction method of cutting machines proposed in this utility model. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The described embodiments are some, but not all, of the embodiments of this utility model.

[0022] Example 1

[0023] Reference Figure 1-4 The illustration illustrates a method to overcome the shortcomings of existing cutting machines that use hard friction between the saw blade and guide wheel, resulting in low transmission efficiency, rapid wear, and cumbersome replacement and adjustment of the saw blade. This embodiment proposes an internal gear ring cutting machine, where the inner circle of the saw blade 100 is manufactured as an internal gear, which meshes with a small gear to perform cutting and slitting operations. Due to the high transmission efficiency, non-slip properties, lubrication, and ease of manufacturing of gears, the machine's performance and processing technology are greatly improved. Furthermore, because of the gear design, the side guide wheel is fixed, eliminating the need for adjustment after replacing the saw blade 100, thus reducing the difficulty of replacing and adjusting the saw blade 100 by adjusting the side guide wheel. The saw blade 100 can be a diamond saw blade, a carbide saw blade, etc., and the objects to be cut or slid include metal, stone, concrete, and wood.

[0024] Therefore, this embodiment proposes an internal tooth ring cutting machine, including a saw blade 100, a drive gear 200, a transmission assembly 300, and an output assembly 400. The saw blade 100 rotates for cutting operations. The drive gear 200 is connected to the saw blade 100 for driving the rotation of the saw blade 100. The two ends of the transmission assembly 300 are connected to the drive gear 200 and the output assembly 400 respectively, for transmitting the rotation output of the output assembly 400 to the drive gear 200, thereby realizing the rotation of the saw blade 100.

[0025] Furthermore, the saw blade 100 is annular, including an outer tooth 101 disposed on the outer edge and an inner tooth 102 disposed on the inner edge. The outer tooth 101 is used for cutting operations, and the inner tooth 102 meshes with the drive gear 200. The rotation of the drive gear 200 drives the saw blade 100 to rotate, and the inner tooth 102 and the drive gear 200 are in spur gear engagement.

[0026] The transmission assembly 300 includes a transmission shaft 301 and a first helical gear 302. The drive gear 200 and the first helical gear 302 are fixedly mounted at both ends of the transmission shaft 301, and the three are in a fixed state and rotate synchronously. The output assembly 400 includes an output shaft 401 and a second helical gear 402 fixedly connected. The first helical gear 302 and the second helical gear 402 mesh and transmit power. It should be noted that the first helical gear 302 and the second helical gear 402 are both in the vertical direction, and they have opposite helical tooth directions and form a 90-degree angle in the vertical direction. The output shaft 401 is the rotating shaft of the motor. The transmission assembly 300 transmits the rotational torque of the motor to the saw blade 100 to realize the rotational cutting operation.

[0027] To achieve stable rotation of the saw blade 100, in this embodiment, a track 103 with annular grooves is provided on the two circumferential sides of the saw blade 100, and a pressing wheel 500 for pressing the saw blade 100 is provided. The surface of the pressing wheel 500 is provided with protrusions 501. Two pressing wheels 500 are fixedly arranged as a group on the two sides of the saw blade 100, and the protrusions 501 are pressed into the track 103 and roll. It should be noted that in this embodiment, the pressing wheel 500 is fixedly arranged, and the protrusions 501 on both sides are pressed into the track 103 to limit the saw blade 100 and prevent it from shaking unstablely during rotation, which would affect the accuracy of the cutting operation. As the pressing wheel 500 rolls, the protrusions 501 continuously roll and limit the movement within the track 103.

[0028] As a preferred embodiment, the track 103 consists of two concentric circles arranged on the side of the saw blade 100. Adding a track 103 improves the limiting stability of the saw blade 100. However, if there are too many tracks 103, it will reduce the strength of the saw blade 100 and affect its service life.

[0029] To accommodate the two tracks 103, in this embodiment, the protrusions 501 are two spaced-apart annular strips, with the spacing corresponding to the spacing between the two tracks 103. The two protrusions 501 roll within the two tracks 103 respectively, and the pressure wheels 500 are in two sets, located above and below the drive gear 200 respectively. In simpler terms, the combination of the two tracks 103 and the protrusions 501 provides stability, and the addition of two sets of pressure wheels 500 further enhances stability, resulting in better cutting performance, greater stability, and increased durability of the saw blade 100.

[0030] Reference Figure 3-4As illustrated, the internal tooth ring cutting machine of this embodiment also includes a water-blocking component 600, a water-discharging component 700, and a water-guiding component 800. The water-discharging component 700 is used to spray water onto the saw blade 100 during cutting operations, as the saw blade 100 generates heat and dust and debris enters during the cutting process. This water dissipates heat and washes away debris and surrounding dust. However, the high-speed rotation of the saw blade 100 during this process can splash water onto the user. Therefore, this embodiment also includes a water-blocking component 600 for vertical water blocking, i.e., water blocking in the rotation direction. The water-guiding component 800 guides the water flow, directing it along the edge to spray water onto the saw blade 100, and also provides some horizontal water-blocking effect.

[0031] More specifically, the water-blocking component 600 is disposed on the side edge of the saw blade 100. The water-blocking component 600 also includes an upper water-blocking plate 601 and a lower water-blocking plate 602 that are flipped. Both the upper water-blocking plate 601 and the lower water-blocking plate 602 can be flipped at a certain angle in the vertical direction to adapt to the intensity of water blocking. When rotating at high speed, they can be flipped to a position closer to the saw blade 100, and when rotating at low speed, they can be flipped to a position farther away from the saw blade 100. The angle can be set according to actual needs.

[0032] The water outlet assembly 700 also includes a water outlet 701 and a water outlet pipe 702 connected to each other. The water outlet 701 is located on one side of the saw blade 100 and below the transmission assembly 300. The water outlet 701 is used to water the saw blade 100, and the water outlet pipe 702 is connected to an external water source. Of course, the water pressure output can also be provided by an external water source. The water guiding assembly 800 includes a water guiding plate 801 and a partition plate 802. The water guiding plate 801 and the partition plate 802 are fitted together and disposed inside the ring of the saw blade 100. The cut-out portion of the water guiding plate 801 along the edge fits together with the partition plate 802 to form a flow guiding part 803. After the water flows out through the water outlet 701, part of it is guided by the flow guiding part 803 and flows to the saw blade 100 along the direction of the flow.

[0033] This embodiment of the internal tooth ring cutter also includes a housing 900, a handheld part 1000, and a handle 1100. It should be noted that the housing 900 is used for the support and fixed installation of the saw blade 100, drive gear 200, transmission assembly 300, output assembly 400, water-blocking assembly 600, water-outlet assembly 700, and water-guiding assembly 800 in this embodiment, as well as the installation of other components, wiring, and motors involved in the internal tooth ring cutter. For example, this embodiment necessarily includes a power supply, switch, and wiring, which can be fully implemented by those skilled in the art with reference to existing technology and are not the core essence of this embodiment. Therefore, the installation, motor rotation, control, and cutting methods are non-essential technical features and will not be described in detail. The handheld part 1000 and the handle 1100 are also used for stable handheld operation of the internal tooth ring cutter during operation.

[0034] The cutting method of the internal gear ring cutter proposed in this embodiment is as follows: the output component 400 is turned on until the output shaft 401 and the second helical gear 402 rotate synchronously; then the first helical gear 302 and the second helical gear 402 cooperate to rotate synchronously; the first helical gear 302, the transmission shaft 301 and the drive gear 200 rotate synchronously, and the drive gear 200 drives the saw blade 100 to rotate; the water outlet 701 is opened to continuously spray water onto the saw blade 100 until the cutting operation is completed and then the outlet is closed.

[0035] Reference Figure 5-6 The diagram illustrates the original hard friction method of the cutting machine, which includes a slice 1200, an adjusting roller 1300, and a friction wheel 1400. The outer edge of the friction wheel 1400 has a concave track, while the inner edge of the slice 1200 has an annular strip-shaped protrusion. The annular strip-shaped protrusion and the concave track on the friction wheel 1400 abut against each other. Relying on friction, when the friction wheel 1400 is driven to rotate, it drives the slice 1200 to rotate. In this case, the annular strip-shaped protrusion and the concave track need to continuously abut and press against each other to effectively transmit rotation. Therefore, under the existing hard friction method, with the increase of wear over time and the number of uses, it is necessary to continuously adjust the adjusting knob 1302 on the original adjusting roller 1300 to adjust the position of the slice 1200 along the guide component 1301. Finally, it is necessary to use the fine-tuning knob 1303 to achieve the best transmission effect.

[0036] Because the original cutting machine uses a hard friction method, the blade 1200 is easily worn down, requiring frequent blade replacements. Furthermore, due to wear, the blade position and distance need constant adjustment, requiring simultaneous adjustment on both sides to the appropriate position. Each adjustment is inconvenient for the user, as a suitable point must be found each time. Even if a suitable point cannot be found, the blade 1200 can still rotate, but the cutting effect is very poor. Therefore, finding the appropriate point is a necessary step, making it cumbersome to use. Improper adjustment also changes the force point during use, causing the blade 1200 to suddenly jam and become immobile. However, the internal toothed ring cutter proposed in this embodiment overcomes these defects. The side guide wheel is fixed, eliminating the need for adjustment after blade replacement. Therefore, the pressure wheel 500 does not require the guide component 1301, adjustment knob 1302, and fine-tuning knob 1303, improving convenience and speed.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit the scope of protection of this utility model. For those skilled in the art, other variations or modifications can be made based on the above description and ideas. It is neither necessary nor possible to exhaustively describe all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the technical solution of this utility model should be covered within the scope of protection of the claims of this utility model.

Claims

1. An internal tooth ring cutting machine, characterized in that: include, The saw blade (100) is annular and includes outer teeth (101) disposed on the outer edge and inner teeth (102) disposed on the inner edge. The outer teeth (101) are used for cutting. A drive gear (200), wherein the internal teeth (102) mesh with the drive gear (200); A transmission assembly (300) includes a transmission shaft (301) and a first helical gear (302), wherein the drive gear (200) and the first helical gear (302) are respectively fixed at both ends of the transmission shaft (301); The output assembly (400) includes a fixedly connected output shaft (401) and a second helical gear (402), wherein the first helical gear (302) meshes with the second helical gear (402) for transmission.

2. The internal tooth ring cutting machine according to claim 1, characterized in that: The saw blade (100) has an annular groove track (103) on its two annular sides.

3. The internal tooth ring cutting machine according to claim 2, characterized in that: It includes a pressure roller (500), the surface of which is provided with a protrusion (501). Two pressure rollers (500) are fixedly disposed on both sides of the saw blade (100) as a group, and the protrusion (501) is pressed into the track (103) and rolls.

4. The internal tooth ring cutting machine according to claim 1, characterized in that: It includes a water-blocking assembly (600) disposed on the side edge of the saw blade (100), the water-blocking assembly (600) including an upper water-blocking plate (601) and a lower water-blocking plate (602) disposed in a flip-out configuration.

5. The internal tooth ring cutting machine according to claim 1, characterized in that: It includes a water outlet assembly (700), which further includes a water outlet (701) and a water outlet pipe (702) connected to each other; The water outlet (701) is located on one side of the saw blade (100) and below the transmission assembly (300).

6. The internal tooth ring cutting machine according to claim 1, characterized in that: It includes a water guiding assembly (800), which includes a water guiding plate (801) and a partition plate (802); The water guide plate (801) and the partition plate (802) are fitted together inside the ring of the saw blade (100), and the cut-out portion of the water guide plate (801) along the edge fits together with the partition plate (802) to form a flow guide section (803).

7. The internal tooth ring cutting machine according to claim 1, characterized in that: It also includes a housing (900), a handheld part (1000), and a handle (1100).

8. The internal tooth ring cutting machine according to claim 3, characterized in that: The track (103) consists of two concentric circles arranged on the side of the saw blade (100).

9. The internal tooth ring cutting machine according to claim 3, characterized in that: The protrusion (501) is two spaced-apart annular strip protrusions, and the spacing corresponds to the spacing between the two tracks (103). The two protrusions (501) roll within the two tracks (103) respectively.

10. The internal tooth ring cutting machine according to claim 3, characterized in that: The clamping rollers (500) are in two sets, located above and below the drive gear (200) respectively.

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