JP3462093B2 - Broach chip suction device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a broach chip suction device, and more particularly to a broach chip suction device suitable for drive roaching or mist drive roaching. [0002] In the conventional inner surface broaching, cutting with an oil-based or water-soluble coolant is mostly performed. Chips during cutting are stored in a curled state in the tip room (blade groove) of the broach immediately after cutting, and are flushed out of the chip room with coolant, or the chip room is provided with a brush provided to remove chips attached to the broach. More discharged. In this case, the chip processing is performed by flowing chips attached to the broach into the frame with coolant, and removing accumulated chips from the machine, or placing chips on the lower part of the frame and dropping chips from the upper part to the outside of the machine. Had been taken out. Since the removed chips cannot be processed as they are because the coolant has adhered to them, oil and water drops in a piled state in the chip box and oil and moisture in the centrifuge
The treatment was performed after the water separation was performed. Even if coolant is not used, the lubricating oil of the ram slide is accumulated in the lower part of the frame body, and if chips are dropped once, the oil content will be attached and it can not be processed as it is,
It was necessary to secure the accumulation state in the chip box, or to remove oil and moisture using a centrifuge. [0003] For example, there is a case where a casting or resin is cut in a dry state without a coolant.
In drive roaching or mist broaching, the above-mentioned coolant is not present, and in this case, the chips were carried out without suction, and the chips attached to the broach were removed by air blow, so that the chips remained inside the frame body. There are problems such as scattering between floors or machines. An object of the present invention is to provide a broach chip suction device that efficiently collects chips generated during broach cutting in a dry state when performing drive roach processing or mist drive roach processing. [0004] For this purpose, the present invention is to arrange a hollow broaching jig on a broaching machine table,
A pocket having an inner diameter of about twice the maximum outer diameter of the broach is provided immediately below the hole on the workpiece mounting surface of the jig above the center of the hollow broaching jig body, and a chip discharging hole and an air supply are provided on both sides of the pocket. a hole is provided, the hole diameter of the workpiece mounting surface hole diameter and table mounting surface side of the jig as long as small comb without interference between the maximum outer diameter of brooches, and further established a chip suction device separate standing, suction of the suction device Side and the exhaust side of the chip discharge hole and the suction device and the air supply hole are connected by a hose, respectively, and a port is provided in the middle of the exhaust side hose to communicate with the atmosphere. The problem of the prior art described above has been solved by providing a broach chip suction device characterized by lowering the temperature. FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. The present invention will be described in detail below. FIG. 1A is an overall view, and FIG. 1B is an enlarged partial view of the vicinity of the broaching jig surrounded by a two-dot chain line in FIG. The thickness of the broaching jig 2 of the present invention placed on the table 7 of the broaching machine 1 is about 80 mm to 100 mm, which is thicker than that of the conventional jig (about 30 mm to 50 mm). 4 is provided with a pocket 21 having an inner diameter of about twice the maximum outer diameter. A chip discharge hole 22 and an air supply hole 23 are provided on both sides of the pocket 21, and the diameters of these holes are adapted to the sizes of the suction hose 11 and the exhaust hose 12 of the suction device. When the broach 4 is passing through the jig body, the work piece of the jig which is the upper and lower holes of the pocket 21 in order to minimize the air suction from other than the air supply hole 23 and to increase the degree of sealing in the jig pocket 21 The hole diameter of the mounting surface side hole 24 and the hole diameter of the table mounting surface side hole 25 are reduced as long as they do not interfere with the broach maximum outer diameter. [0006] A separate type chip suction device 10 is provided. The suction side of the suction device 10 and the chip discharge hole 22 are connected by the suction side hose 11, and the exhaust side of the suction device 10 and the air supply hole 23 are connected.
And are connected by an exhaust side hose 12. The capacity of the suction device 10 is selected in consideration of the amount of generated chips, the size of the machine to be used, the size of the broach, the size of the installation place, and the like. The purpose of connecting the air supply hole of the jig with the exhaust side of the suction device is to remove the chips attached to the broach 4 by the exhaust pressure by supplying the exhaust gas of the suction device, thereby facilitating the suction from the suction side. That is, when there is no connection between the exhaust side of the suction device and the air supply hole of the jig, the function of detaching chips attached to the broach from the broach is inferior. Further, when the exhaust side hose 12 of the suction device is connected to the jig air supply hole 23, the temperature of the exhaust gradually increases, so a port 13 communicating with the atmosphere is provided in the middle of the exhaust side hose 12 to prevent this, Fresh air is appropriately sucked in to lower the temperature of the exhaust gas. Reference numeral 3 denotes a pool head for grasping the shank of the broach 4, 5 a workpiece, 6 a ram including a hydraulic cylinder device for pulling the pool head 3, and 8 a mist nozzle. With this configuration, by operating the suction device during broach cutting, chips attached to the broach 4 are discharged from the suction side 22 to the suction device 10. Chips discharged to the suction device 10, even in the case of mist processing, the adhesion of the coolant is very small, and since the oil content is absorbed by the filter in the suction device, the chips can be processed as they are, There is no need for a centrifugal separator for securing the accumulation state in the chip box and separating the chips from the coolant, which is often used in broaching using conventional coolant. In the case of drive loach processing or mist broach processing without coolant for castings and resins,
Conventionally, chips adhered to the broach were removed by air blow without suction, so there was a problem that chips were scattered in the frame body, floor or between machines. In the device, chips generated during cutting of the broach are collected efficiently in a dry state without scattering to the surroundings, and chips separated from the broach are sucked from the suction hose and accumulated in the suction device, and the broach is grasped. Since chips do not accumulate on the pull head of the apparatus, cutting can be performed without any trouble without impairing the gripping function of the pull head. When cutting is performed using a coolant, a cleaning nozzle using a coolant is provided in the table so that chips do not accumulate on the pull head. In the case of dry cutting, the nozzle may be used for air blowing. As described above, according to the present invention, in drive loach processing or mist broach processing without coolant, most chips generated during cutting are scattered in the lower portion of the frame main body, between floors or between machines. It is possible to recover in a clean dry state without any problem. By circulating the exhaust air of the suction device to the jig, the function of detaching the chips attached to the broach can be improved, and the chips separated from the broach are sucked from the suction hose and accumulated in the suction device, and the device for gripping the broach Since no chips are accumulated on the pull head, the cutting can be performed without any trouble without impairing the gripping function of the pull head. INDUSTRIAL APPLICABILITY The present invention can be applied to drive loach processing in general, and can be applied to mist coolant, semi-dry (trace mist), cold air, inert atmosphere (such as N2), and dry broaching.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention, wherein (a) is an overall view, and (b) is a vicinity of a broach jig surrounded by a two-dot chain line of (a). FIG. [Explanation of Codes] Broaching machine 2. 3. Broaching jig (jig) Brooch 5. Workpiece 7. Table 10. Chip suction device 11. Suction hose 12. Exhaust side hose 13. Port to atmosphere 21. Pocket 22. Chip discharge hole 23. Air supply hole

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int. Cl. ⁷ , DB name) B23D 41/00 B23D 37/10 B23Q 11/00

Claims (1)

(57) [Claims 1] A hollow broaching jig is arranged on a broaching machine table, and the jig is located just below a hole on a workpiece mounting surface side of the jig above a central portion of the hollow broaching jig main body. A pocket with an inner diameter of about twice the maximum outer diameter of the broach is provided, a chip discharge hole and an air supply hole are provided on both sides of the pocket, and the hole diameter of the jig workpiece mounting surface and the table mounting surface side are broach. unless small comb without interference between the maximum outer diameter, further established the chip suction device separate standing, the suction intake side of the apparatus and the exhaust side of the chip discharge hole and the suction device and the air supply hole with a hose, respectively A broach chip suction device, wherein a port connected to the atmosphere is provided in the middle of the hose on the exhaust side, and fresh air is appropriately sucked to lower the temperature of the exhaust.