JPH0768376A - Thermal deburring equipment - Google Patents

Abstract

PURPOSE:To dispense with a drying device and to reduce the installation space and the cost. CONSTITUTION:In a thermal deburring equipment 10 to remove buns of a work 24 stored in a deburring chamber 23, a vacuum unit 17 provided with a vacuum pump 53 is communicated with the deburring chamber 23 in an openable/closable manner by a three-way valve 51 to execute the drying of the washing liquid attached to the work 24.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal deburring device for burning and removing burrs, burrs, chips, etc. of an object to be processed (cut or cast product), and more particularly to a thermal deburring device attached to the object to be processed. The present invention relates to a thermal deburring device capable of removing the water content of the cleaning solution.

[0002]

2. Description of the Related Art Burrs of machined products that have been cut, cast burrs of cast products, and the like must be removed during finishing. Conventionally, as a device for removing such burrs and burrs, a thermal deburring device has been proposed in addition to a mechanical deburring device.

This thermal deburring apparatus accommodates an object to be deburred in a pressure vessel (deburring chamber) which can be sealed, seals the deburring chamber, and then stores the deburring chamber in the deburring chamber. Fuel gas and oxygen gas are sealed at high pressure and mixed, the mixed gas is momentarily exploded and burned, and fine burr and the like are burned and melted and removed by high heat and blast at the time of burning.

This thermal deburring device is capable of removing burrs at complicated places where the tool of the mechanical deburring device cannot be inserted, but the surface of the object to be treated is clean,
It should be even more dry. If the oil and fat remains on the surface of the object to be processed, the oil and fat will be burned onto the surface of the object to be processed due to high heat during thermal deburring. Also, if the cleaning liquid after removing the oil and fat adheres to the surface of the object to be treated, the high heat during thermal deburring is consumed as the heat of vaporization of the water in the cleaning liquid, and the deburring effect due to combustion dissolution is Will be reduced.

[0005]

Due to the above-mentioned circumstances, a step of cleaning the oil and fat adhering to the surface of the object to be processed and drying the cleaning liquid is required as a pre-step of the thermal deburring device. However, installing the cleaning device and the drying device separately from the thermal deburring device causes an increase in installation space and an increase in cost.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a thermal deburring device which does not require a drying device and can reduce the installation space and cost.

[0007]

DISCLOSURE OF THE INVENTION The present invention is directed to a frame unit having a deburring chamber for accommodating an object to be processed such as burrs, a charging unit for supplying a fuel gas and an oxygen gas, and the charging unit. The fuel gas and the oxygen gas from the unit are mixed to form a mixed gas, and a mixing unit that supplies the mixed gas into the deburring chamber and an ignition unit that spark-ignites the mixed gas into a combustion gas. In the thermal deburring device for burning and removing burrs and the like of the object to be processed by the combustion gas, a vacuum unit equipped with a vacuum pump is openably and closably communicated with the deburring chamber to provide an object to be processed. The water content of the cleaning liquid adhering to is made possible to be dried.

[0008]

In general, the thermal deburring device requires a drying device as a pre-process for drying and removing the cleaning liquid adhering to the object to be treated. In the thermal deburring apparatus according to the present invention, before supplying the mixed gas into the deburring chamber by the charging unit and the mixing unit, the vacuum unit is operated to dry the cleaning liquid moisture adhering to the object to be deburred. The chamber can function as a drying chamber. Therefore, it is not necessary to install the drying device separately from the thermal deburring device, and the installation space and cost for the drying device can be reduced, so that the installation space and cost of the thermal deburring device as a whole can be reduced.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing an embodiment of a thermal deburring device according to the present invention. The thermal deburring device 10 shown in FIG. 1 includes a frame unit 11,
Work transfer unit 12, closing unit 13,
It has a hydraulic unit 14, a charging unit 15, a mixing / ignition unit 16 and a vacuum unit 17. The thermal deburring device 10 is covered with a cover 18.

The frame unit 11 includes a machine base 21 and a machine head 21 via a connect rod 20.
Are combined. A chamber housing 22 is vertically provided on the machine head 21, and a deburring chamber 23 is formed in the chamber housing 22. The deburring chamber 23 is opened downward in the drawing, and is set to a size capable of accommodating a work (cut product) 24 as an object to be processed.

In the work transfer unit 12, an index table 25 is rotatably supported by one connect rod 20, and the index table 25 is attached to the gear 2.
It is connected to the table drive motor 28 via 6 and 27. In the index table 25,
Through holes 29 are opened in the circumferential direction, and a plurality of work stands 30 can be installed on the index table 25 corresponding to the through holes 29. The work 24 with burrs can be installed on each work table 30. The index table 25 is rotated by driving the table drive motor 28, and the work 24 on the work table 30 is positioned immediately below the deburring chamber 23.

In the closing unit 13, a cylinder hole 31 is formed in the machine base 19, and a closing piston 32 is arranged in the cylinder hole 31 so as to be slidable in the vertical direction in the figure. A guide rod 33 penetrating into the closing piston 32 is fixed to the cylinder hole 31 to guide the vertical movement of the closing piston 32. When the hydraulic oil is pumped from the hydraulic unit 14 to the cylinder hole 31, the closing piston 32
And the closing piston 32 penetrates the through hole 29 of the index table 25 and lifts the work table 30. The lifted work table 30 accommodates the work 24 in the deburring chamber 23 and closes the lower opening of the deburring chamber 23 to form the deburring chamber 23 in a sealed structure.

The charging unit 15 includes a fuel gas charging cylinder 35 connected to a fuel gas introducing pipe 34, an oxygen gas charging cylinder 37 connected to an oxygen gas introducing pipe 36, and a fuel gas charging cylinder 35. , Oxygen gas charging cylinder 37
An operating cylinder 39 in which a piston rod 39A is connected to each of the piston rods 35A and 37A via a connect plate 38, and an inlet valve 40 disposed in each of the fuel gas introduction pipe 34 and the oxygen gas introduction pipe 36, The fuel gas introduction pipe 34 and the mixing / ignition unit 16 communicate with each other, and the oxygen gas introduction pipe 36 and the mixing / ignition unit 16 communicate with each other.

By opening the inlet valve 40, the fuel gas is supplied from the fuel gas introducing pipe 34 to the fuel gas charging cylinder 35, and the oxygen gas introducing pipe 36 is supplied.
Oxygen gas is supplied to the oxygen gas charging cylinder 37 from. By closing the inlet valve 40, the supply of the fuel gas and the oxygen gas is shut off. Hydrogen gas, methane gas, or the like is suitable as the fuel gas. Further, the fuel gas introduction pipe 34, the oxygen gas introduction pipe 36
Are connected to a fuel cylinder and an oxygen cylinder installed in an external storage chamber, respectively.

One end of the fuel gas supply pipe 41 is
Inlet valve 40 in the fuel gas introduction pipe 34
And the fuel gas charging cylinder 35, and the other end is connected to the mixing / ignition unit 16
Of the fuel gas passage 47 (described later). Further, one end of the oxygen gas supply pipe 42 is connected between the inlet valve 40 and the oxygen gas charging cylinder 37 in the oxygen gas introduction pipe 36, and the other end thereof is a passage for the oxygen gas of the mixing / ignition unit 16. 48 (described later).

After the inlet valve 40 is closed, hydraulic oil is supplied from the hydraulic unit 14 to the operating cylinder 39 so that the fuel gas in the fuel gas charging cylinder 35 passes through the fuel gas supply pipe 41 and the fuel gas passage. The oxygen gas in the oxygen gas charging cylinder 37 passes through the oxygen gas supply pipe 42 to the oxygen gas passage 48.
Supplied to each.

The mixing / ignition unit 16 is a combination of a mixing unit and an ignition unit.
A fuel gas side valve 44, an oxygen gas side valve 45, and a spark plug 46 are installed in the. The mixing block 43 includes a fuel gas passage 47 and an oxygen gas passage 4
8 and a mixed gas passage 49 are formed respectively, and the fuel gas passage 47 and the oxygen gas passage 48 communicate with the mixed gas passage 49.

A fuel gas side valve 44 is provided at a communication portion between the fuel gas passage 47 and the fuel gas supply pipe 41 of the charging unit 15. Also, the oxygen gas passage 48
And the oxygen gas supply pipe 42 of the charging unit 15
An oxygen gas side valve 45 is disposed in a communication portion with the. The fuel gas side valve 44 and the oxygen gas side valve 45 are connected to the hydraulic unit 14 and are opened and closed by hydraulic oil from the hydraulic unit 14. Fuel gas side valve 4
4 and the opening operation of the oxygen gas side valve 45, the fuel gas is supplied from the fuel gas supply pipe 41 into the fuel gas passage 47, and the oxygen gas is supplied from the oxygen gas supply pipe 42 into the oxygen gas passage 48. . Further, by closing the fuel gas side valve 44 and the oxygen gas side valve 45, the supply of the fuel gas to the fuel gas passage 47 and the supply of the oxygen gas to the oxygen gas passage 48 are cut off.

The oxygen gas supplied to the fuel gas passage 47 and the oxygen gas supplied to the oxygen gas passage 48 are
The mixed gas is mixed in the mixed gas passage 49 to generate a mixed gas. The mixed gas 49 is provided so as to be able to communicate with the deburring chamber 23 of the frame unit 11 via the deburring pipe 50 and the three-way valve 51. The three-way valve 51 is disposed in the deburring pipe 50, and when the mixed gas passage 49 is communicated with the deburring shamba 23 by the three-way valve 51, the mixed gas mixed in the mixed gas passage 49 is deburred. It is supplied to the chamber 23.

The spark plug 46 has a mixed gas passage 49.
The mixed gas in the mixed gas passage 49 is spark ignited, and the mixed gas passage 49 and the deburring pipe 50 are disposed.
And the mixed gas in the deburring chamber 23 is explosively burned. Work 2 due to the high heat and blast of this combustion gas
The burrs and the like in 4 are burnt and melted to be removed.

In the vacuum unit 17, a vacuum pipe 53 is arranged on a vacuum pipe 52, and the vacuum pipe 52 is provided with a devailing pipe 50 via a three-way valve 51.
It was communicated to. When the vacuum pump 53 is communicated with the deburring chamber 23 by operating the three-way valve 51, the inside of the deburring chamber 23 is reduced to a negative pressure near the absolute vacuum pressure by the operation of the vacuum pump 53. The reduced pressure lowers the boiling point of water, so that the water content of the cleaning liquid deposited on the surface of the work 24 is evaporated and dried. The evaporated water is separated by an oil / water separator 54 connected to a vacuum pump 53.
Is removed to the outside. An oil mist trap 55 is connected to the vacuum pump 53 to prevent the oil mist from scattering into the atmosphere.

Next, the operation will be described. First, the surface of the work 24 having burrs is washed to remove oil and fat, and then the work 24 is placed on the work table 30.
The index table 25 of the work transfer unit 12
Install on top. Next, the table drive motor 28 is driven to rotationally move the index table 25, and the work 24 is positioned immediately below the deburring chamber 23. Then, the closing piston 32 of the closing unit 13 is raised to press the work table 30 against the lower opening of the deburring chamber 23, and the work 24 is housed in the deburring chamber 23 in a sealed state.

Next, the three-way valve 51 is operated to operate the vacuum pump 53 of the vacuum unit 17 and the deburring chamber 2
3 is brought into communication with each other, and the vacuum pump 53 is operated to set the inside of the deburring chamber 23 to a predetermined vacuum pressure (negative pressure). Due to this negative pressure, the boiling point of water is lowered, and the water content of the cleaning liquid attached to the work 24 is evaporated and dried.

After that, the inlet valve 40 of the charging unit 15 is opened to supply the fuel gas into the fuel gas charging cylinder 35 and the oxygen gas into the oxygen gas charging cylinder 39, respectively. Next, the inlet valve 40 is closed and the fuel gas side valve 4 of the mixing / ignition unit 16 is closed.
4 and the oxygen gas side valve 45 are opened, and further the three-way valve 51 is operated to connect the mixed gas passage 49 and the deburring chamber 23.

In this state, the actuating cylinder 39 of the charging unit 15 is actuated to move the piston rod 35A of the fuel gas charging cylinder 35 and the piston rod 37A of the oxygen gas charging cylinder 37 to the upper side in the figure, The fuel gas in the gas charging cylinder 35 and the oxygen gas in the oxygen gas charging cylinder 37 are pressurized. These pressurized gases are mixed in the mixed gas passage 49 via the fuel gas passage 47 and the oxygen gas passage 48, and the mixed gas is pumped into the debarling chamber 23 through the deburring pipe 50. To be done.

Next, the fuel gas side valve 44 and the oxygen gas side valve 4 of the mixing / ignition unit 16 are provided.
5, the ignition plug 46 is operated to ignite the mixed gas by spark ignition, and the mixed gas passage 49 and the deburring pipe 5 are connected.
0 and the mixed gas reaching the inside of the deburring chamber 23 are explosively burned. Due to the high heat and blast of the combustion gas, burrs and chips of the work 24 in the deburring chamber 23 are burned and melted and removed.

Thereafter, the closing piston 32 of the closing unit 13 is lowered and the work table 30 is placed on the index table 25 of the work transfer unit 12. Then, the table drive motor 28 is driven to position the next work table 30 on which the work 24 after cleaning and before deburring is placed immediately below the deburring chamber 23.

According to the above-described embodiment, the fuel gas charging cylinder 35 and the oxygen gas charging cylinder 37 of the charging unit 15 are used to pass through the mixing / ignition unit 16 and the deburring chamber 23.
Before supplying the mixed gas into the vacuum unit 17
Of the deburring chamber 23 by operating the vacuum pump 53 of
Since the inside functions as a drying chamber to evaporate the water content of the cleaning liquid adhering to the work 24 to dry it, a drying device for drying the cleaning liquid adhering to the work 24 is provided separately from the thermal deburring device 10. No need to install. Therefore, the installation space for the drying device, the cost for installing the drying device, the heat energy supplied to the drying device, and the like can be reduced, and the installation space and cost of the thermal deburring device as a whole can be reduced.

Further, since the cleaning liquid moisture adhering to the work 24 can be removed by the thermal deburring device 10, burrs and burrs can be burned and removed satisfactorily.

In the above embodiment, the spark plug 46 is installed in the mixed gas passage 49 of the mixing block 43, but the spark plug 46 is installed in the deburring pipe 50 or the deburring chamber 23. May be done. Further, although the vacuum pipe 52 of the vacuum unit 17 is connected to the deburring pipe 50, the vacuum pipe 52 is connected to at least one of the fuel gas introduction pipe 34 and the oxygen gas introduction pipe 36 of the charging unit 15. May be done.

Although the embodiment of the present invention has been described in detail above with reference to the drawings, the specific configuration of the present invention is not limited to this embodiment, and changes in design within the scope not departing from the gist of the present invention can be made. Even if it exists, it is included in the present invention.

[0032]

As described above, according to the thermal deburring device according to the present invention, it is possible to reduce the installation space and cost by eliminating the need for the drying device.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of a thermal deburring device according to the present invention.

[Explanation of symbols]

 10 Thermal Deburring Device 11 Frame Unit 15 Charging Unit 16 Mixing / Ignition Unit 17 Vacuum Unit 23 Deburring Chamber 24 Work 34 Fuel Gas Introducing Pipe 35 Fuel Gas Charging Cylinder 36 Oxygen Gas Introducing Pipe 37 Oxygen Gas Charging Cylinder 40 Inlet Valve 41 Fuel gas supply pipe 42 Oxygen gas supply pipe 46 Spark plug 47 Fuel gas passage 48 Oxygen gas passage 49 Mixed gas passage 50 Debarling pipe 51 Three-way valve 53 Vacuum pump

Claims (1)

[Claims] 1. A frame unit equipped with a deburring chamber for containing an object to be treated such as burrs, a charging unit for supplying a fuel gas and an oxygen gas, the fuel gas from the charging unit and the above-mentioned fuel gas. Mixing oxygen gas into a mixed gas, having a mixing unit for supplying the mixed gas into the deburring chamber, and an ignition unit for spark ignition of the mixed gas into combustion gas, the combustion gas In a thermal deburring device that burns and removes burrs and the like of an object to be processed, a vacuum unit equipped with a vacuum pump is openably and closably connected to the deburring chamber to dry the water content of the cleaning liquid adhering to the object to be processed. A thermal deburring device characterized by being capable.