Diamond hole saw free of material blocking

Abstract

The utility model relates to the technical field of brazing devices, in particular to a diamond hole saw free of material blocking. A diamond hole saw free of material blocking comprises a main body provided with a cutting opening, the outer wall of the cutting opening wraps an outer diamond, the inner wall of the cutting opening wraps an inner diamond, and the inner wall of the cutting opening is provided with a limiting part so that the cutting opening can form different calibers with the small inside and the large outside. According to the utility model, the inner wall of the diamond hole saw is provided with the salient points or the upper and lower inverted cone shapes and the big-end-up shape, so that the shape of the waste stone material is changed into the big-end-up shape, the waste stone material cannot be sucked into the hole saw barrel by the rotational inertia of equipment, and the stone material can automatically fall out or be easily taken out.

Description

Technical Field

[0001] The utility model relates to the technical field of brazing devices, in particular to a diamond hole saw without material jamming. Background Art

[0002] A hole saw is a hole opener, which refers to a special circular saw for sawing circular holes in modern industry or engineering. It is simple and flexible to operate, easy to carry, safe and has a wide range of uses.

[0003] When drilling holes with ordinary diamond hole saws, due to the rotational inertia of angle grinders, pistol drills and other equipment, it is easy to suck the stone waste into the hole saw barrel and get stuck. Figure 1-2 As shown in the figure, it is a typical state that waste stone is stuck when using a common diamond hole saw. If waste stone is stuck, it needs to be pried out with tools, which is time-consuming and laborious. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the utility model provides a diamond hole saw with a simple structure, stone waste will automatically fall out or be easy to take out without material jamming. To solve the above technical problems, the utility model provides the following technical solutions:

[0005] A non-jamming diamond hole saw comprises a main body with a cutting opening, wherein the outer wall of the cutting opening is covered with an outer diamond, and the inner wall of the cutting opening is covered with an inner diamond. A limiting portion is provided on the inner wall of the cutting opening so that the cutting opening has different calibers, with the inner being smaller and the outer being larger.

[0006] On the basis of adopting the above technical solution, the utility model can also adopt the following further technical solution:

[0007] The limiting portion includes at least one diamond convex point. The shape of the diamond convex point can be designed according to actual needs, for example, any shape such as round, square, trapezoidal, etc. is acceptable.

[0008] The diamond bumps can be arranged at a position ranging from the inner edge of the cutting opening to the deepest position of 0.1 mm to 30 mm.

[0009] When the number of the diamond convex points is greater than two, the diamond convex points are arranged in a ring shape on the inner wall of the cutting opening to form a convex point circle.

[0010] The convex dot circle is provided with at least one circle. The number of diamond convex dots can be any one of 1 to 500, and the number of circles of the convex dot circle can be any one of 1 to 8 circles.

[0011] When the number of the diamond protrusions is greater than two, the intervals between the diamond protrusions are the same or different.

[0012] The limiting part includes a conical surface inclined from the outer edge of the cutting opening to the inner edge of the cutting opening. The conical surface can be designed according to actual needs and can be any shape such as a simple plane, a multi-segment line surface, a step line surface, and an arc line surface, as long as the aperture size can be changed.

[0013] The upper end surface of the conical surface starts from the inner edge of the cutting opening, and the lower end surface of the conical surface ends at the inside of the cutting opening.

[0014] The cone angle of the cone surface is between 0.1° and 85°, and the deepest point of the lower end surface of the cone can be 0-30 mm away from the inner edge of the cutting mouth.

[0015] The first aperture formed on the lower end surface of the conical surface is smaller than the second aperture formed on the upper end surface of the conical surface.

[0016] The limiting portion comprises an inclined surface with a gradually decreasing diameter, and the upper end surface of the inclined surface is not connected to the outer edge of the cutting opening.

[0017] The main body is also provided with a mounting portion.

[0018] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0019] The utility model makes convex points or upper and lower inverted cone shapes and upper large and lower small shapes on the inner wall of the diamond hole saw, so that the shape of the stone waste becomes upper large and lower small, and the stone waste will not be sucked into the hole saw cylinder by the rotation inertia of the equipment, and the stone will automatically fall out or be easily taken out. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The background technology of the utility model of a diamond hole saw without material jamming is shown in FIG. Figure 1 .

[0021] Figure 2 The background technology of the utility model of a diamond hole saw without material jamming is shown in FIG. Figure 2 .

[0022] Figure 3 The utility model is a structural schematic diagram of a first embodiment of a diamond hole saw without material jamming.

[0023] Figure 4 The utility model is a top view of a first embodiment of a diamond hole saw without material jamming.

[0024] Figure 5 The utility model is a schematic diagram of the use of a diamond hole saw without material jamming in the first embodiment.

[0025] Figure 6 This is a schematic structural diagram of a second embodiment of a diamond hole saw that does not jam materials according to the utility model.

[0026] Figure 7This is a top view of a second embodiment of a diamond hole saw that does not jam materials according to the utility model.

[0027] Figure 8 The utility model is a schematic diagram of the use of a second embodiment of a diamond hole saw without material jamming.

[0028] Fig. 9 This is a schematic structural diagram of a third embodiment of a diamond hole saw that does not jam materials according to the utility model.

[0029] Fig.10 The utility model is a schematic diagram of the use of a third embodiment of a diamond hole saw without material jamming.

[0030] Among them, the main body 1, the cutting edge 2, the outer diamond 21, the inner diamond 22, the mounting part 3, the diamond protrusion 4, the stone waste 5, the conical surface 6, the upper end surface 61, the lower end surface 62, and the inclined surface 7. DETAILED DESCRIPTION

[0031] In conjunction with the accompanying drawings, a diamond hole saw without material jamming provided by the utility model is further described.

[0032] Embodiment 1, as Figure 3-5 As shown, a diamond hole saw without material jamming comprises a diamond hole saw body 1 , wherein the body 1 is provided with a cutting opening 2 and a mounting portion 3 .

[0033] Specifically, the outer wall of the cutting opening 2 is covered with outer diamonds 21, and the inner wall of the cutting opening 2 is covered with inner diamonds 22. The inner wall of the cutting opening 2 is provided with a limiting portion, which enables the cutting opening 2 to form different calibers, with the inner being smaller and the outer being larger.

[0034] In order to better express the specific structure of the cutting edge 2, Figure 3-5 The middle cutting edge 2 is a cross-sectional view.

[0035] Furthermore, the limiting portion includes at least one diamond protrusion 4 .

[0036] The shape of the diamond bump 4 can be designed according to actual needs, and is circular in this embodiment.

[0037] Furthermore, when the number of the diamond bumps 4 is greater than two, the diamond bumps 4 are arranged in a ring shape on the inner wall of the cutting opening to form a bump ring.

[0038] Furthermore, in this embodiment, the number of raised dots is one circle, but two circles or even more circles may be provided according to actual needs.

[0039] Furthermore, in this embodiment, four diamond bumps 4 are provided, and the intervals between the diamond bumps are the same. The intervals between the diamond bumps 4 can also be set to unequal intervals according to actual needs.

[0040] The waste stone 5 cut by the diamond hole saw of this embodiment is wide at the top and narrow at the bottom, and has a semicircular arc structure at the top and bottom. It will not be sucked into the hole saw cylinder by the rotation inertia of the equipment, and the waste stone 5 will automatically fall out or be easily taken out.

[0041] Embodiment 2, as Figure 6-8 As shown, a diamond hole saw without material jamming comprises a diamond hole saw body 1 , wherein the body 1 is provided with a cutting opening 2 and a mounting portion 3 .

[0042] Specifically, the outer wall of the cutting opening 2 is covered with outer diamonds 21, and the inner wall of the cutting opening 2 is covered with inner diamonds 22. The inner wall of the cutting opening 2 is provided with a limiting portion, which enables the cutting opening 2 to form different calibers, with the inner being smaller and the outer being larger.

[0043] In order to better express the specific structure of the cutting edge 2, Figure 6-8 The middle cutting edge 2 is a cross-sectional view.

[0044] Furthermore, the limiting portion includes a conical surface 6 inclined from the outer edge of the cutting opening 2 to the inner side of the cutting opening 2. In this embodiment, the conical surface 6 is a plane, a multi-segment line surface, a step line surface, or any other shape, as long as it can change the aperture to be larger at the top and smaller at the bottom.

[0045] Furthermore, the upper end surface 61 of the conical surface 6 starts from the inner edge of the cutting opening 2 , and the lower end surface 62 of the conical surface 6 ends at the inside of the cutting opening 2 .

[0046] Furthermore, the first aperture formed by the lower end surface 62 of the conical surface 6 is smaller than the second aperture formed by the upper end surface 61 of the conical surface 6. Other aspects are the same as those of the first embodiment.

[0047] The waste stone 5 cut by the diamond hole saw of this embodiment is wide at the top and narrow at the bottom, and has an inverted cone-shaped structure. It will not be sucked into the hole saw cylinder by the rotation inertia of the equipment, and the waste stone 5 will automatically fall out or be easily taken out.

[0048] Embodiment three, as Figure 9-10 As shown, in order to better express the specific structure of the cutting edge 2, Figure 9-10 The middle cutting edge 2 is a cross-sectional view.

[0049] The limiting part includes a slope 7 with a gradually decreasing diameter, and a distance is left between the upper end surface 71 of the slope 7 and the outer edge of the cutting opening 2, so that a step is formed at the slope 7. The distance between the two steps of the formed step is between 0-10 mm. The rest is the same as the first embodiment.

[0050] The waste stone 5 cut by the diamond hole saw of this embodiment has a structure that is wide at the top and narrow at the bottom, and large at the top and small at the bottom. It will not be sucked into the hole saw cylinder by the rotation inertia of the equipment, and the waste stone 5 will automatically fall out or be easily taken out.

[0051] The present invention has been illustrated and described with reference to the preferred embodiments. However, it will be understood by those skilled in the art that various changes in form and details may be made within the scope of the claims.

Claims

1. A diamond hole saw without material jamming, comprising a main body with a cutting opening, characterized in that The outer wall of the cutting opening is covered with outer diamonds, and the inner wall of the cutting opening is covered with inner diamonds. The inner wall of the cutting opening is provided with a limiting portion so that the cutting opening has different calibers, with the inner being smaller and the outer being larger.

2. A non-stuck diamond hole saw according to claim 1, characterized in that The limiting portion includes at least one diamond protrusion.

3. The non-stuck diamond hole saw according to claim 2, characterized in that When the number of the diamond convex points is greater than two, the diamond convex points are arranged in a ring shape on the inner wall of the cutting opening to form a convex point circle.

4. The non-stuck diamond hole saw according to claim 3, characterized in that The convex point circle is provided with at least one circle.

5. The non-stuck diamond hole saw according to claim 2, characterized in that When the number of the diamond protrusions is greater than two, the intervals between the diamond protrusions are the same or different.

6. The non-stuck diamond hole saw according to claim 1, characterized in that The limiting portion comprises a conical surface which is inclined from the outer edge of the cutting opening to the inner side of the cutting opening.

7. The non-stuck diamond hole saw according to claim 6, characterized in that The upper end surface of the conical surface starts from the outer edge of the cutting opening, and the lower end surface of the conical surface ends at the inside of the cutting opening.

8. The non-stuck diamond hole saw according to claim 7, characterized in that The first aperture formed on the lower end surface of the conical surface is smaller than the second aperture formed on the upper end surface of the conical surface.

9. The non-stuck diamond hole saw according to claim 1, characterized in that The limiting portion comprises an inclined surface with a gradually decreasing diameter, and the upper end surface of the inclined surface is not connected to the outer edge of the cutting opening.

10. The non-stuck diamond hole saw according to claim 1, characterized in that The main body is also provided with a mounting portion.

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