Handheld cold cutting saw

Abstract

The utility model discloses a handheld cold cutting saw, which is characterized in that a saw blade is mounted on a machine head, the machine head is provided with a front shell so as to cover the saw blade, the front shell is provided with a U-shaped groove, and the U-shaped groove exposes a part of the saw blade for cutting; a wear-resistant block is arranged on one side edge of the U-shaped groove, and at least one face of the wear-resistant block is exposed in the U-shaped groove and makes contact with a workpiece. The saw blade is provided with a protection structure, the saw blade and the shell can be protected, and accidents are avoided.

Description

Technical Field

[0001] The utility model relates to a hand-held cold-cutting saw. Background Art

[0002] A cold cutting saw is an electric tool that, during the metal sawing process, the heat generated by the saw blade teeth when sawing the workpiece is transferred to the sawdust through the saw teeth, and the sawed workpiece and the saw blade remain cool, hence the name cold cutting.

[0003] The existing cold saw has a saw blade mounted on the machine head, and there is no protective structure for the saw blade and the machine head. When cutting a rod-shaped workpiece such as a steel pipe, the workpiece will vibrate due to cutting, and then quickly collide with the machine head, which will cause the machine head shell to wear and crack. In severe cases, the saw blade may be damaged, cracked, and fragments may fly out, injuring the operator. Utility Model Content

[0004] The utility model aims at the deficiencies in the prior art and provides a hand-held cold-cutting saw with a protective structure capable of protecting a saw blade and a housing to avoid accidents.

[0005] In order to solve the above technical problems, the utility model solves the problems through the following technical solutions: a handheld cold cutting saw, a machine head of which is equipped with a saw blade, the machine head is provided with a front shell to cover the saw blade, the front shell is provided with a U-shaped groove, the U-shaped groove exposes a part of the saw blade for cutting processing; a wear-resistant block is provided on one side of the U-shaped groove, at least one side of the wear-resistant block is exposed in the U-shaped groove and contacts with the workpiece.

[0006] In the above technical solution, the front shell is provided with a mounting arm, and the wear-resistant block is fastened and mounted on the mounting arm by means of screws.

[0007] In the above technical solution, the wear-resistant block includes a mounting step that fits the mounting arm, a threaded hole is provided on the mounting step, and a through hole is provided at a corresponding position on the mounting arm.

[0008] In the above technical solution, a bottom plate is provided on the bottom surface of the front shell, and the bottom plate is provided with a notch corresponding to the U-shaped groove, and the bottom plate covers the saw blade to produce a protective effect.

[0009] In the above technical solution, a knife groove is provided at the end of the wear-resistant block, and the gap between the knife groove and the bottom plate is for the saw blade to pass through.

[0010] In the above technical solution, the wear-resistant block is arranged on the side wall of the U-shaped groove in the rotation direction of the saw blade.

[0011] The utility model provides a hand-held cold-cutting saw with a protective structure capable of protecting a saw blade and a shell to avoid accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be discussed below. Obviously, the technical solutions described in conjunction with the drawings are only some embodiments of the utility model. For ordinary technicians in this field, other embodiments and their drawings can be obtained based on the embodiments shown in these drawings without paying creative work.

[0013] Figure 1 It is a three-dimensional diagram of the utility model.

[0014] Figure 2 It is a schematic diagram of the disassembled structure of the mechanism part of the utility model.

[0015] Figure 3 It is a front schematic diagram of the utility model

[0016] In the figure: front shell 1, U-shaped groove 11, mounting arm 12, screw 13, bottom plate 2, saw blade 3, wear-resistant block 4, mounting step 41, screw hole 42, knife groove 43. DETAILED DESCRIPTION

[0017] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the various embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments described in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] This embodiment discloses a hand-held cold cutting saw, and a wear-resistant block 4 is designed and installed on the machine head. The current cold cutting saw does not involve a protective structure. When cutting long strip workpieces such as pipes and bars, the cutting action of the saw blade 3 causes the workpiece to vibrate and vibrate at high frequency. This vibration will react on the saw blade 3 and may cause the saw blade 3 to split. Second, when the workpiece vibrates, it will hit the front shell 1 of the machine head. The materials of the front shell 3 are currently engineering plastics and aluminum. Under the long-term collision of the workpiece, the front shell 3 may be damaged and broken, or deformed, which will have an adverse effect on the machine head. The role of the wear-resistant block 4 of this device is to withstand the loading of the workpiece, thereby providing a buffering and energy absorption effect, which can not only protect the machine head and the front shell, but also reduce the risk of damage to the saw blade 3. In addition, a bottom plate 2 is installed under the front shell 1, thereby providing a maximum area of ​​protection. Even if the saw blade 3 is damaged, the risk of fragment splashing can be avoided to the greatest extent.

[0019] like Figures 1 to 3As shown, a hand-held cold cutting saw disclosed in this embodiment has a front shell 1 arranged on the machine head to cover the saw blade 3. The front shell 1 is provided with a U-shaped groove 11. The U-shaped groove 11 exposes a part of the saw blade 3 for cutting processing. A bottom plate 2 is also installed at the bottom of the front shell 1. The part of the saw blade 3 exposed to the outside is only the part at the U-shaped groove. The bottom plate 2 is provided with a notch corresponding to the U-shaped groove 11, and the bottom plate 2 covers the saw blade 3 to produce a protective effect.

[0020] A wear-resistant block 4 is arranged on the side of the U-shaped groove 11. The wear-resistant block 4 is used to contact the workpiece in the U-shaped groove 11. And the wear-resistant block 4 is installed on the side wall in the rotation direction of the saw blade 3. In this design, when the saw blade 3 rotates and cuts, the workpiece will act on the wear-resistant block 4. Among them, the wear-resistant blocks 4 are also arranged on both side walls of the U-shaped groove 11.

[0021] The wear-resistant block 4 of the present device is fastened to the mounting arm 12 on the front shell 1 by means of screws 13. For this reason, a through hole is provided on the mounting arm 12 for the bolt 13 to pass through.

[0022] The wear block 4 includes a mounting step 41 for fitting with the mounting arm 12, and a threaded hole 42 is designed on the mounting step 41. Bolts are inserted from one side of the mounting arm 12, passed through the through hole and screwed into the threaded hole 42, thereby mounting the wear block 4 on the front shell 1.

[0023] Finally, a knife groove 43 is provided at the end of the wear-resistant block 4 , and the gap between the knife groove 43 and the bottom plate 2 is for the saw blade 3 to pass through.

[0024] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view. The scope of the present invention is defined by the appended claims, rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0025] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A hand-held cold-cut saw, wherein a saw blade (3) is mounted on the head of the saw saw, the head of the saw saw being provided with a front housing (1) to cover the saw blade (3), wherein: The front housing (1) is provided with a U-shaped groove (11), wherein the U-shaped groove (11) exposes a portion of the saw blade (3) for cutting processing; a wear-resistant block (4) is provided on one side of the U-shaped groove (11), wherein at least one side of the wear-resistant block (4) is exposed in the U-shaped groove (11) and in contact with a workpiece.

2. A handheld cold cutting saw according to claim 1, characterized in that: The front shell (1) is provided with a mounting arm (12), and the wear-resistant block (4) is fastened and mounted on the mounting arm (12) by means of screws (13).

3. A handheld cold cutting saw according to claim 2, characterized in that: The wear-resistant block (4) comprises a mounting step (41) fitted with the mounting arm (12); a threaded hole (42) is provided on the mounting step (41); and a through hole is provided at a corresponding position on the mounting arm (12).

4. The handheld cold cutting saw according to claim 1, characterized in that: The bottom surface of the front shell (1) is provided with a bottom plate (2), the bottom plate (2) being provided with a notch corresponding to the U-shaped groove (11), and the bottom plate (2) covers the saw blade (3) to produce a protective effect.

5. A hand-held cold cutting saw according to claim 4, characterized in that: A knife groove (43) is provided at the end of the wear-resistant block (4), and a gap between the knife groove (43) and the bottom plate (2) is provided for the saw blade (3) to pass through.

6. The handheld cold cutting saw according to claim 1, characterized in that: The wear-resistant block (4) is arranged on a side wall of the U-shaped groove (11) in the rotation direction of the saw blade (3).

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