JPS6021135Y2 - Circular saw with oil hole - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a circular saw for cutting metal, and more specifically to a circular saw with an oil hole.

Circular saws for metal cutting include those called segment saws that use high-speed steel as the cutting blade material, and those called chip saws that are made by brazing tips of cemented carbide, ceramics, etc. However, various types of saws are selected depending on the material to be cut and the cutting conditions.As the recent trend has been to increase cutting speeds and make the material more difficult to cut, chip saws using cemented carbide tips are being used. is increasing.

By the way, when cutting the work material with this kind of circular saw,
Regardless of the material of the cutting blade of the saw, cutting fluid is usually supplied from the outside to the cutting site for cooling and lubrication purposes.

However, the wall thickness of a circular saw is thin compared to its outer diameter, so the gap between the workpiece groove formed by cutting and removal and the saw body is small, and since the saw rotates, the part that is actually being cut is It is extremely difficult for cutting fluid to penetrate into the shaft, and a sufficient cooling effect cannot be obtained.

Therefore, chips ejected by cutting heat and frictional heat adhere to the cutting blade of the circular saw, damaging the cutting blade, causing chipping, and accelerating wear of the cutting blade, significantly reducing tool life. It's forcing me.

This phenomenon is particularly noticeable as the work material is difficult to cut and as the cutting speed increases.

As a solution to such problems, the applicant proposed
5-1769()l proposed a circular saw with an oil hole.

However, in the circular saw of that invention, it is necessary to drill a fairly long oil hole in the saw body, and because the saw body is thin and the hole diameter is small and deep, the drilling tool ( This is extremely difficult as it may cause damage to the drill (drill) or damage to the oil hole due to the bending of the hole.

The present invention was made in view of the above-mentioned circumstances, with the purpose of providing a circular saw with an oil hole that is easier to manufacture.
The feature is that it is a circular saw that has a cutting blade part 2 on the outer peripheral edge and a mounting hole 3 to the saw board in the center, and a hole 3 formed between each cutting blade 4 in the cutting blade part 2. A branch oil hole 6 that opens into the blade groove 5 is bored in the saw body 1 to an appropriate depth.
The main oil grooves 7 which allow the branch oil holes 6 to communicate with each other are cut alternately on the left and right sides of the saw body 1 for each group. 7 with a lid by an appropriate means to form a thank-you note, or a pipe is buried in the main oil groove 7 to serve as the main oil hole, and the cutting oil injection end 9 of all the formed main oil holes 8 is It is located at an opening on the same side of the saw body 1.

Q7 The present invention will be explained in detail based on the illustrated embodiments.

In FIG. 1, reference numeral 1 denotes a circular saw body, which has a cutting blade 2 on its outer peripheral edge, a mounting hole 3 for attaching to a saw board in the center, and each cutting blade 4 in the cutting blade 2. is formed by brazing carbide tips.

Reference numeral 6 denotes a branch oil hole which opens into the blade groove 5 formed between the cutting blades 4 and is bored to an appropriate depth in the direction of the saw center. (6a-6e)) to 1
The saw body is divided into a plurality of groups, and a main oil groove 7 consisting of a communication portion 7a and a passage portion 7b is cut into the side surface of the saw body so that each group communicates with each other. .

The main oil grooves 7 are cut alternately on the left and right sides between adjacent groups in consideration of the overall balance as a circular saw, and after the main oil grooves 7 are cut, the surface is glued, for example, to a thin plate piece. The main oil hole 8 is formed by covering it with an appropriate means such as fixing it with a pipe, or by burying a pipe, and the injection end 9 of all of these main oil holes 8 cannot be filled with oil from the outside. Openings are provided on the same side of the saw body for communication.

Incidentally, the branch oil hole 6 and the main oil hole 8 may be formed as shown in FIG. 2 with the same effect.

FIG. 3 shows a circular saw with an oil hole according to another embodiment. To explain only the main parts thereof, 10 is a screw hole screwed into the opening of the branch oil hole 6, and 11 is a screw hole screwed therein. A nozzle member,
By making the direction of the through hole 12 of the nozzle member 11 adjustable in any direction, cutting oil can always be applied directly to the scoop surface 13 of the cutting blade 4 regardless of the opening position of the branch oil hole 6. There is.

In the circular saw with an oil hole having the above configuration, the branch oil hole is configured to be short, which has the effect of simplifying the drilling process when manufacturing the circular saw, and the fact that it is easier to actually cut the saw. Cutting oil is supplied directly to the cutting edge of the saw blade, which provides excellent cooling and lubrication effects, and there is no welding of chips to the cutting edge, significantly reducing chipping and abrasion. It has excellent effects such as those mentioned above.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the circular saw with oil holes of the present invention, Figures 2 and 3
The figure shows another embodiment. 1: Circular saw body, 2: Cutting blade, 3: Mounting hole, 4: Cutting blade, 5
゛: Blade groove, 6: Branch oil hole, 7: Main oil groove, 8: Main oil hole, 1
1: Nozzle member.

Claims (1)

[Claims for Utility Model Registration] 1. A cutting blade 2 on the outer periphery and a mounting hole 3 for the saw in the center.
A circular saw having: each cutting edge 4 in the cutting edge portion 2;
The branch oil hole 6 that opens into the blade groove 5 formed between the saw body 1
The saw body is divided into a plurality of groups each having an appropriate number of branch oil holes 6 in one group, and a main oil groove 7 is formed in each group to make the branch oil holes 6 communicate with each other. 1 Alternately cut the left and right sides, and cover the main oil groove 7 with an appropriate means to form a thank-you card, or bury a pipe in the main oil groove 7 to use it as a main oil hole, and A circular saw with an oil hole, characterized in that the cutting oil injection end 9 of the main oil hole 8 is opened on the same side of the saw body 1. 2 A screw hole 10 is provided at the opening of the branch oil hole 6 that opens in the blade groove 5.
A circular saw with an oil hole according to claim 1, which is a utility model, and is equipped with a nozzle member 11 which is screwed into the screw hole 10.