JPH0733543U - Milling cutter Suction processing device - Google Patents

Abstract

(57) [Summary] [Purpose] To forcibly suck the chips generated during cutting of the cutter to prevent chips from scattering in all directions, to keep the working environment clean and to improve operating efficiency. In a chip suction processing device of a milling cutter for sucking and collecting chips while cooling a cutter 7 mounted on a rotary spindle 6, a hood body 9 is attached to a spindle head 5 so as to surround the cutter 7. An enlarged diameter region 9a is formed in a part of the hood body 9, and the suction duct 10 is connected to the enlarged diameter region 9a.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a chip suction processing device for a milling cutter, and more particularly to a chip suction processing device for a milling cutter that uses a suction hood to suction and process chips generated by cutting by the milling cutter.

[0002]

[Prior art]

 When milling with a cutting tool such as a face mill, chips are scattered around as the cutter rotates, which deteriorates the work environment and reduces the work efficiency of the worker.

In order to solve this problem, a cutting tool with a chip suction mechanism that suction-processes chips generated when cutting a work to be processed and prevents the chips from scattering is disclosed in Japanese Utility Model Publication No. 5-16105. Have been proposed by.

This cutting tool with a chip suction mechanism is configured as shown in FIGS. 5 and 6.

That is, in FIGS. 5 and 6, a tool holder 31 is mounted on a spindle 30 of a front milling machine, and a cutter body 32 having a plurality of cutting edge tips 32 a is attached to the tool holder 31 by a mounting bolt. It is fixed at 33. A substantially cylindrical hood body 35 is attached to the outer circumference of the tool holder 31 via a bearing 34. A chip hocket 36 is formed between the inner peripheral surface of the hood body 35 and the outer peripheral surface of the cutter body 32, and the inlet end of the suction duct 37 is formed on a part of the outer periphery of the hood body 35. It is connected so as to communicate with the chip pocket 36, and the outlet end of this suction duct 37 is connected to a vacuum dust collector (not shown).

Therefore, the above-described rolling tool with a chip suction mechanism rotates the cutter body 32 by the spindle 30 while blowing the mist of cutting oil or compressed air onto the cutter body 32 when cutting the work W. The cutting edge chip 32a of the cutter body 32 cuts the front surface of the work W, and some chips are collected from the chip pocket 36 through the suction duct 37 into the vacuum dust collector, and the remaining chips are scattered in all directions. Deposit around the work table.

[0007]

[Problems to be solved by the device]

 However, all of the above-described rolling tools with a chip suction mechanism are configured to blow a mist of cutting oil or compressed air to the cutter body 32, and therefore, it is necessary to clean scattered chips accumulated after cutting. Not only that, but there was a problem that a part of the cutting process was spent in cleaning time, which reduced the operating efficiency during operation, and deteriorated the work environment and reduced work efficiency.

Further, in a milling cutter such as a face milling machine, chips are scattered in the rotation direction and the tangential direction of the cutter body 32 as the cutter body 32 is rotated, and the chips are separated from the lower end of a substantially cylindrical hood body 35. It is difficult to collect all of the chips from the gaps between the work W and the machined surface, which makes it difficult to collect all the chips. If the suction force is increased, the noise will increase and the power consumption of the vacuum dust collector itself will increase. There was a problem such as becoming.

Therefore, in order to solve the above-mentioned problem, an object of the present invention is to pay attention to the movement direction of the chips scattered from the milling cutter, and positively remove the chips without increasing the size of the vacuum dust collector. An object of the present invention is to provide a chip suction processing device for a milling cutter that improves the working efficiency during operation by suction and recovery to improve the working environment.

[0010]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is a chip suction processing device for a milling cutter that sucks and collects chips while cooling the cutter mounted on the rotary spindle, and is attached to the spindle head so as to surround the cutter. The hood body and a diametrical expansion area formed in a part of the hood body and having a radius set sufficiently larger than the other areas, and connected to this diametrical expansion area to suck and collect chips in the hood body. It is characterized in that it is provided with a suction duct installed as described above.

[0011]

[Action]

 In the present invention, when cutting a work such as an aluminum alloy, when the work is cut while the cutter attached to the rotary spindle rotates, chips are scattered toward the diameter expansion area in the tangential direction of the cutter, Depending on the throwing distance of the chips, the chips are sucked up by the suction force of the vacuum dust collector and are collected in the vacuum dust collector through the suction duct.

[0012]

【Example】

 Hereinafter, one embodiment shown in the drawings in which the present invention is applied to a face milling machine will be described.

In FIGS. 3 and 4, reference numeral 1 denotes a machine base of a front milling machine, on which a horizontal feed slide (not shown) is laid in the Y direction. The intermediate table 2 is slidably fitted on the slide. On both sides of the intermediate table 2, a pair of left and right guide grooves 2a are arranged in parallel in the X direction orthogonal to the feed slide, and a work table on which a work W is placed is placed in both guide grooves 2a. 3 is slidably mounted. Further, a column 4 is erected on one side of the machine base 1, and a vertical feed slide 4a is vertically hung in the Z direction inside the column 4 and is attached to the vertical feed slide 4a. The spindle head 5 is fitted so as to be able to move up and down. Further, as shown in FIG. 2, a rotary spindle 6 is rotatably mounted on the lower portion of the spindle head 5, and the rotary spindle 6 has a cutter 7 having a plurality of cutting blade tips 7a. It is attached via a tool holder 8. A hood body 9 having a substantially fan-shaped plan is attached to the lower part of the spindle head 5 so as to surround the rotary spindle 6 and the cutter 7. Further, a part of the hood main body 9 is formed with a radially enlarged region 9a having a locally enlarged radius, and the inlet end 10a of the suction duct 10 is connected to the upper surface of the radially enlarged region 9a. As a result, the air in the hood body 9 is sucked and collected together with the chips. Furthermore, the outlet end of the suction duct 10 is connected to a vacuum dust collector 11, and the vacuum dust collector 11 is installed on the other side of the machine base 1.

As shown in FIG. 1, a small gap C is formed between the inner peripheral wall of the hood body 9 and the cutter 7 in the region other than the enlarged diameter region 9 a of the hood body 9.

When the outer diameter of the cutter 7 is set to D and the work W having a width L is cut while rotating the cutter 7 in the direction of the arrow, as shown by the diagonal lines in FIG. The chips cut by 7a are scattered by a predetermined distance l in the tangential directions a1 to a2, b1 to b2, c1 to c2, d1 to d2, e1 to e2 of the cutter 7 and collide with the inner peripheral surface of the hood body 9. After that, it is collected in the suction duct 10 by the suction action of the vacuum dust collector 11. Further, as shown in FIG. 2, the lower end edge 9b of the hood body 9 is formed so as not to interfere with the cutting surface of the work W by retreating upward by a height Δh from the cutting surface of the work W. The height Δh also serves as the suction port of the hood body 9.

As shown in FIGS. 3 and 4, a drive motor 12 is provided above the main spindle head 5 so as to drive the rotary main shaft 6, and the column 4 near the drive motor 12 is provided. An operation panel 13 is vertically hung on the arm rod 14.

Next, the operation of the present invention described above will be described. When the drive motor 12 is driven by a command from the operation panel 13, the cutter 7 mounted on the rotary spindle 6 rotates and cuts the work W having a width L. Then, the chips are scattered in the tangential direction by a predetermined distance 1 toward the enlarged diameter region 9a of the hood body 9. The chips are bent upward by the upward air flow from below while being scattered in the expanded diameter region 9a, and the chips are sucked up by the suction action of the vacuum dust collector 11 and passed through the suction duct 10 to the vacuum dust collector 11 Will be recovered in. The cutter 7 is also cooled by the suctioned air.

In the above embodiment, an example in which the main spindle head of the face milling machine is provided with the rotary main spindle vertically is described, but the present invention is also applicable to a main spindle head in which the rotary main spindle is horizontally provided. Of course.

[0019]

[Effect of device]

 As described above, according to the present invention, the diametrically expanded area is formed in the hood body, and the chips generated during cutting are guided to this diametrically expanded area and sent to the dust collector from the suction duct. As a result, the work environment can be kept clean because chips can be collected by suction and chips do not scatter in all directions. Further, since the suction opening portion of the suction duct is provided only in the cutting and scattering area, there is no waste in the use of suction air, and the dust collection efficiency can be improved. Further, since the chips are sucked and collected while cooling the cutter, the cutter can be sufficiently cooled and the life of the cutter can be extended.

[Brief description of drawings]

FIG. 1 is a plan sectional view showing a main part of a chip suction processing device of a milling cutter according to the present invention.

FIG. 2 is a side sectional view showing the device.

FIG. 3 is a side view showing the entire chip suction device of the milling cutter according to the present invention.

FIG. 4 is a front view of the device.

FIG. 5 is a vertical cross-sectional view showing a main part of a conventional rolling tool with a chip suction mechanism.

FIG. 6 is a bottom view of a conventional cutting tool with a chip suction mechanism.

[Explanation of symbols]

 5 Spindle Head 6 Rotating Spindle 7 Cutter 9 Hood Main Body 9a Expanded Area 10 Suction Duct 11 Vacuum Dust Collector

Claims (1)

[Scope of utility model registration request] 1. A chip suction processing apparatus for a milling cutter that sucks and collects chips while cooling a cutter mounted on a rotary spindle, and a hood main body attached to a main spindle head so as to surround the cutter, and a hood main body of the hood main body. A diameter expansion region formed in a part and having a radius set to be larger than the other regions by a predetermined length, and a suction duct connected to this diameter expansion region and suctioning and collecting chips in the hood body. A chip suction processing device for a milling cutter, comprising: