JP2014144502A - Cutting fluid supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting fluid supply device that is space saving and can be installed to an optimal place of a machine tool, and can stably supply a cutting fluid to the machine tool, and further can inject the cutting fluid to an effective position with respect to a workpiece and a tool.SOLUTION: In a cutting fluid supply device, a hemispherical or spherical fixed shaft projection 11 is provided at a part of a fixed shaft 10 in which a flow path for supplying a cutting fluid is internally formed, and a nozzle base part 52 in which a peripheral surface of a nozzle body is spherically formed is disposed while facing the fixed shaft projection. The device is constituted of a link 40 at one end of which a long hole-shaped link guide hole 40a where a nozzle tip penetrates is formed, and a first motor 110 having a rotating shaft to which the other end of the link is connected. The link operates in a fan-shape when the first motor is driven, and the nozzle tip guided by the link guide hole injects the cutting fluid in a predetermined direction.

Description

  The present invention relates to a cutting fluid supply device to a two-way operation coolant nozzle that can be suitably used, for example, when supplying a cutting fluid or a coolant to a workpiece or tool during operation of a machine tool.

  In general, there is known an apparatus that moves a nozzle tip to a target position by operating a nozzle in two different directions, up and down and left and right, by two motors (see Patent Document 1). Also, as a chip disposal device for machine tools, a rocking link having a long guide hole is fixed to the base end of the cutting fluid injection nozzle, and an eccentric pin attached to the cam disk is fitted into the guide hole of the rocking link. In addition, there is a proposal that the nozzle is reciprocally swung by fixing the cam disk to the rotation shaft of the rotation drive device (see Patent Document 2).

JP 2001-275640 A JP-A-6-238544

  According to the supply device disclosed in Patent Document 1, it is possible to move the nozzle tip to a target position by operating the nozzle in two different directions, the vertical and horizontal directions. However, since such a supply device requires a motor for each operation direction of the nozzle, it leads to an increase in size and weight of the device, and since there is no freedom in the positional relationship between the nozzle and the motor, the installation location on the machine tool is There was a problem of being restricted.

  Therefore, in Patent Document 2, the cutting agent injection nozzle can be rotated or oscillated over a wide range using the injection force of the cutting agent injected using a cutting agent supply pump having a minimum capacity. Possible chip disposal devices have been proposed. However, in such a chip disposal device, the direction in which the reciprocating operation of the spray nozzle by the swing link is fixed in one direction, it is difficult to supply the cutting fluid to an effective position, and the operating angle and operating range of the nozzle are limited. There was an inconvenience that it could not be changed.

  An object of the present invention is to provide a cutting tool capable of spraying cutting fluid to an effective position with respect to a work or a tool, enabling space-saving installation to a machine tool and optimal supply of the cutting fluid and stable supply of cutting fluid. The object is to provide a liquid supply apparatus.

In order to solve the above-described problem, a cutting fluid supply device according to claim 1 of the present invention is a cutting fluid supply device that supplies a cutting fluid or a coolant fluid to a workpiece or a tool of a machine tool.
A fixed shaft in which a flow path for supplying cutting fluid is formed,
A hemispherical or spherical fixed shaft protrusion is provided on a part of the fixed shaft,
The fixed shaft protrusion includes a communication hole for feeding cutting fluid to the rotatable nozzle body,
A nozzle base portion having a spherical peripheral surface of the nozzle body is disposed to face the fixed shaft protruding portion, and the nozzle base portion protrudes from the fixed shaft while the fixed shaft protruding portion is fixed. It can move along the circumference of the part,
Between the fixed shaft protrusion and the nozzle base is sealed by an elastic seal member,
The cutting fluid is fed in a liquid-tight manner from the fixed shaft to the nozzle tip through the seal member regardless of the relative positions of the fixed shaft protrusion and the nozzle base,
A link in which a long hole-shaped link guide hole through which the nozzle tip penetrates is formed at one end;
A first motor having a rotating shaft to which the other end of the link is connected;
It is constituted by a plate-like cover arranged in parallel with the link,
When the first motor is driven, the link operates in a fan shape, and the nozzle tip guided to the link guide hole injects cutting fluid in a predetermined direction.

  Since the cutting fluid supply apparatus according to claim 1 has such a configuration, it is possible to operate the nozzle in a desired direction with one motor, and it is possible to realize a small size and power saving.

Moreover, the cutting fluid supply device according to claim 2 of the present invention is the cutting fluid supply device according to claim 1, further comprising a second motor arranged coaxially with the first motor,
A first gear connected to the rotating shaft of the second motor;
Providing a second gear that meshes with and rotates with the first gear;
The rotating shaft of the first motor is a hollow shaft, and the rotating shaft of the second motor is disposed through the hollow shaft,
An elongated nozzle angle guide hole through which the nozzle tip penetrates is formed at the center of the second gear.

  Since the cutting fluid supply apparatus according to claim 2 has such a configuration, even if two motors are used, the physique of the motor can be reduced by combining the gears, and the size can be reduced. Can be realized.

Further, the cutting fluid supply device according to claim 3 of the present invention is the cutting fluid supply device according to claim 1, further comprising a substantially square-shaped nozzle angle guide hole formed in the cover,
The nozzle tip penetrates into the nozzle angle guide hole.

  Since the cutting fluid supply device according to the third aspect has such a configuration, the moving direction of the nozzle can be flexibly changed according to the installation environment of the device.

Moreover, the cutting fluid supply apparatus according to claim 4 of the present invention is the cutting fluid supply apparatus according to claim 1, further comprising a circular nozzle angle guide that can rotate on the same plane as the cover,
An elongated nozzle angle guide hole through which the nozzle tip penetrates is formed at the center of the nozzle angle guide,
A plurality of positioning holes are formed in the cover along the outer periphery of the nozzle angle guide,
A protrusion formed on a resin material fixed to the nozzle angle guide is fitted into the positioning hole.

  Since the cutting fluid supply device according to claim 4 has such a configuration, the moving direction of the nozzle can be arbitrarily changed according to the installation environment of the device with a simple configuration, and the nozzle can be in a desired direction. Can be moved to.

  According to the present invention, it is possible to place the machine tool at an optimal location in a space-saving manner and supply a stable cutting fluid, and to inject the cutting fluid to an effective position with respect to the workpiece or tool.

It is a perspective view which shows the cutting fluid supply apparatus which concerns on one Embodiment of this invention. It is an internal structure figure of the cutting fluid supply apparatus concerning one embodiment of the present invention. It is a front view of the cutting fluid supply device concerning one embodiment of the present invention. It is a figure explaining the mechanism part of the cutting fluid supply apparatus which concerns on one Embodiment of this invention, a front view (FIG. 4 (a)) in a state without a cover and a gear, and a front view in a state without a cover (FIG. 4 ( b)). It is a perspective view which shows the movement state of the nozzle of the cutting fluid supply apparatus which concerns on one Embodiment of this invention. It is a front view which shows the modification of the cutting fluid supply apparatus which concerns on this invention. It is a front view which shows the modification of the cutting fluid supply apparatus which concerns on this invention.

  Hereinafter, a cutting fluid supply apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a cutting fluid supply apparatus 1 according to an embodiment of the present invention. FIG. 2 is an internal structure diagram of the cutting fluid supply apparatus 1 according to an embodiment of the present invention. FIG. 3 is a front view of the cutting fluid supply apparatus 1 according to an embodiment of the present invention.

  A cutting fluid supply device 1 according to an embodiment of the present invention is a device that supplies cutting fluid or coolant fluid (hereinafter collectively referred to as “cutting fluid”) to a workpiece or tool of a machine tool. A fixed shaft 10 in which a flow path to be supplied is formed, a frame 70 to which one end of the fixed shaft 10 is fixed, a nozzle main body 50 rotatably attached to the other end of the fixed shaft 10, and a nozzle main body A link 40 in which a long-hole-shaped link guide hole 40a penetrating the tip of 50 is formed at one end, a fixed shaft 10, a nozzle body 50, a body 100 in which the link 40 is built and attached to a frame 70, A first motor 110 having a rotating shaft attached to the frame 70 adjacent to the link 10 and connected to the other end of the link 40, and coaxial with the rotating shaft of the first motor 110 attached to the frame 70. A second motor 120 that is location. Then, a gear cover 130 including a first gear 131 connected to the rotation shaft of the second motor 120 and a second gear 132 that rotates in mesh with the first gear 131 is attached to the body 100. A thin flat cover 200 is attached to the upper surface.

  The rotation center axes of the first motor 110 and the second motor 120 coincide with each other. The fixed shaft 10 is attached to the frame 70 adjacent to each other so that the central axis is parallel to the rotational central axes of the first motor 110 and the second motor 120. The first motor 110 includes a hollow output shaft 150 that transmits output to the link 40, and the second motor 120 includes an output transmission shaft 125 that passes through the hollow output shaft 150 and transmits output to the first gear 131. Yes. An output transmission shaft 125 is fitted to the shaft end of the second motor 120, and is connected to one end of the output transmission shaft 180 of the second motor 120 inserted through the hollow output shaft 150 of the first motor 110. A groove 180a corresponding to the shaft end of the second motor 120 is formed (see FIG. 2).

  One end of the fixed shaft 10 is supported via a frame 70 so that the fixed shaft itself does not rotate, and the other end has a spherical fixed shaft protruding portion 11. The cutting fluid supply path 10 a is formed inside the fixed shaft and extends from one end of the fixed shaft 10 to the fixed shaft protruding portion 11. That is, the cutting fluid supply passage 10a is formed from one end of the fixed shaft 10 to the fixed shaft protrusion 11 and serves as a communication hole for supplying the cutting fluid to the nozzle base 52 (see FIG. 2).

  The nozzle body 50 is formed from a nozzle tip 51 and a nozzle base 52. A cutting fluid supply path 50 a for supplying cutting fluid to the nozzle tip 51 is provided inside the nozzle body. One end of the nozzle tip 51 is formed in a funnel shape, and the nozzle base portion 52 is formed in a spherical shape on the peripheral surface, and has a shape corresponding to the curved surface shape of the fixed shaft protruding portion 11.

  The nozzle base portion 52 extends along the peripheral surface of the fixed shaft protruding portion 11 in a state where an O-ring (elastic seal member) 80 (see FIG. 2) is sandwiched along the outer peripheral surface forming the spherical shape of the fixed shaft protruding portion 11. To move. In addition, a groove is formed in the nozzle base portion 52 over the entire circumference on the surface side facing the fixed shaft protruding portion 11. Then, an O-ring 80 is fitted in this groove so as to be in pressure contact with the contact surface of the fixed shaft protruding portion 11, so that the cutting fluid flowing from the fixed shaft protruding portion 11 to the nozzle base portion 52 does not leak to the outside. 80 is sealed.

  The cutting fluid supply device 1 is assembled to the machine tool by firmly fixing the screw 70a formed on one side of the frame 70 and the body 100 with a bolt.

  Then, the mechanism part of the cutting fluid supply apparatus which concerns on one Embodiment of this invention is demonstrated based on drawing. FIG. 4 is a view for explaining a mechanism part of the cutting fluid supply device according to one embodiment of the present invention, a front view without a cover and a gear (FIG. 4A), and a front view without a cover. FIG. 5 shows a moving state of the nozzle of the cutting fluid supply device according to the embodiment of the present invention.

  An elongated link guide hole 40a of the link 40 is inserted into the cylindrical portion of the nozzle tip 51 of the nozzle body 50, and when the first motor 110 is driven after the cutting fluid supply device 1 is assembled. The second gear having a rotation center that coincides with the axis of the fixed shaft 10 when the rotational force of the first motor 110 is transmitted as a rotation torque to the hollow output shaft 150 (see FIG. 2) and the link 40 rotates. The nozzle body 50 operates in a fan shape along the long-hole-shaped link guide hole 132a formed in the center of 132 (see FIG. 4B).

  The second gear 120 is engaged with the first gear 131 via the first gear 131 that drives the second motor 120 and is connected to the output transmission shaft 125 of the second motor 120. When 132 is rotated, the direction of the link guide hole 132a formed in the second gear 132 can be arbitrarily changed. By doing in this way, the nozzle main body 50 can be moved to a desired direction, and the moving direction of a nozzle can be flexibly changed according to the installation environment of an apparatus.

  FIG. 5 shows a state in which the nozzle body 50 is moved in one direction. The moving direction of the nozzle body 50 is not limited to the moving direction shown in FIG. 5, and can be moved in a desired direction by using the driving of the second motor 120 as described above. In the present embodiment, two motors are used. However, by changing the gear ratio, even if a small motor is used, a large torque can be output, and a reduction in size can be realized.

  Next, a cutting fluid supply apparatus according to a modification of the present invention will be described. In the following, differences from the above-described embodiment will be described, and the same components as those in the above-described embodiment will be denoted by corresponding reference numerals and detailed description thereof will be omitted. FIG. 6 shows a front view of the cutting fluid supply device 2 according to a modification of the present invention.

  In the embodiment described above, two motors and two gears are combined, but only one motor may be used in order to achieve further miniaturization. In the cutting fluid supply device 2 according to the modified example, only one motor (first motor 110) is used, and the first motor 110 is attached to the frame 70. The first motor 110 has a rotating shaft (not shown) for transmitting output, and an end thereof is connected to the link 40. The nozzle tip 51 of the nozzle body 50 has a long hole-shaped link guide hole 40 a formed in the link 40, and the cover 230 has an abbreviated shape that guides the movement of the nozzle body 50. A nozzle angle guide hole 230a is formed. When the first motor 110 is driven, the link 40 connected to the rotation shaft (not shown) rotates. The nozzle tip 51 penetrating the link guide hole 40a of the link 40 operates integrally with the link 40 along the nozzle angle guide hole 230a formed in the cover 230, and the nozzle body 50 is moved to a desired position. Can be moved in the direction. Since the cutting fluid supply apparatus 2 according to this modification does not require the second motor 120 and the gear cover 130 shown in the above-described embodiment, the apparatus can be further downsized.

  Next, a different structure of the cutting fluid supply apparatus according to the modification of the present invention will be described. FIG. 7 shows a front view of a cutting fluid supply device 3 of a modification according to the present invention.

  Also in the cutting fluid supply apparatus 3 according to this modification, only the first motor 110 is used. The structure of the nozzle angle guide hole is different from the cutting fluid supply device 2. Since other structures and mechanisms are the same as those of the cutting fluid supply device 2, detailed description thereof is omitted. A disk-shaped nozzle angle guide 450 having a long hole-shaped link guide hole 450a formed at the center is provided. The nozzle angle guide 450 includes a resin-made protrusion 460 including a substantially rectangular arm 460a and a protrusion 460b protruding from the tip of the arm 460a. The cover 330 is formed with an engagement hole 330a having a center coincident with the fixed shaft 10 (not shown) so that the nozzle angle guide 450 is rotatably engaged. Positioning holes 330b are formed at an equal pitch along the outer periphery. The driving principle is the same as that of the cutting fluid supply device 2, and when the first motor 110 is driven, the link 40 connected to the rotating shaft (not shown) of the first motor 110 rotates. The nozzle tip 51 inserted into the link guide hole 40 a of the link 40 is along the nozzle angle guide hole 450 a formed at the center of the nozzle angle guide 450 engaged with the engagement hole 330 a of the cover 330. Then, the nozzle body 50 moves integrally with the link 40 and moves. The moving direction of the nozzle body 50 is not limited to one direction, and the nozzle angle guide 450 is rotated to fit the convex portion 460b of the protrusion 460 into the different positioning hole 330b to change the direction of the nozzle angle guide hole 450a. Thus, the nozzle body 50 can be moved in a desired direction.

  By having such a configuration, an effect similar to that of the above-described embodiment is exhibited. In addition, since the second motor and two gears are not required, the number of parts can be reduced, which can contribute to cost reduction.

  In addition, the kind of motor used by this invention is not limited. That is, various motors such as a stepping motor and a (brush, brushless) DC motor can be used.

  In addition, the shapes, dimensions, numerical values, and materials of the constituent elements introduced in the above-described embodiments and modifications are merely exemplary, and various shapes, dimensions, numerical values, and materials can be used without departing from the scope of the present invention. Needless to say, it can be selected as appropriate.

  In this embodiment and this modification, the cutting fluid is supplied from the nozzle tip of the coolant nozzle to the workpiece or tool of the machine tool. However, the present invention is not necessarily limited to such a cutting fluid. Liquid, grinding oil, polishing liquid, cooling liquid (coolant liquid), or cooling oil (coolant oil) may be supplied to the workpiece or tool of the machine tool from the nozzle tip of the coolant nozzle.

1, 2, 3 Cutting fluid supply apparatus 10 Fixed shaft 10a Cutting fluid supply passage 11 Fixed shaft protrusion 40 Link 40a Link guide hole 50 Nozzle body 50a Cutting fluid supply passage 51 Nozzle tip 52 Nozzle base portion 70 Frame 80 O-ring 100 Body DESCRIPTION OF SYMBOLS 110 1st motor 120 1st motor 130 Gear cover 131 1st gear 132 2nd gear 125 Output transmission shaft 150 Hollow output shaft 200,230,330 Cover 450 Nozzle angle guide 230a, 450a Nozzle angle guide hole

Claims (4)

In a cutting fluid supply device that supplies cutting fluid and coolant fluid to workpieces and tools of machine tools,
A fixed shaft in which a flow path for supplying cutting fluid is formed,
A hemispherical or spherical fixed shaft protrusion is provided on a part of the fixed shaft,
The fixed shaft protrusion includes a communication hole for feeding cutting fluid to the rotatable nozzle body,
A nozzle base portion having a spherical peripheral surface of the nozzle body is disposed to face the fixed shaft protruding portion, and the nozzle base portion protrudes from the fixed shaft while the fixed shaft protruding portion is fixed. It can move along the circumference of the part,
Between the fixed shaft protrusion and the nozzle base is sealed by an elastic seal member,
The cutting fluid is fed in a liquid-tight manner from the fixed shaft to the nozzle tip through the seal member regardless of the relative positions of the fixed shaft protrusion and the nozzle base,
A link in which a long hole-shaped link guide hole through which the nozzle tip penetrates is formed at one end;
A first motor having a rotating shaft to which the other end of the link is connected;
It is constituted by a plate-like cover arranged in parallel with the link,
When the first motor is driven, the link operates in a fan shape, and the tip of the nozzle guided to the link guide hole ejects the cutting fluid in a predetermined direction. A second motor disposed coaxially with the first motor;
A first gear connected to the rotating shaft of the second motor;
Providing a second gear that meshes with and rotates with the first gear;
The rotating shaft of the first motor is a hollow shaft, and the rotating shaft of the second motor is disposed through the hollow shaft,
2. The cutting fluid supply device according to claim 1, wherein an elongated nozzle angle guide hole through which the nozzle tip penetrates is formed at a central portion of the second gear. Furthermore, a substantially angled nozzle angle guide hole is formed in the cover,
The cutting fluid supply device according to claim 1, wherein the nozzle tip penetrates into the nozzle angle guide hole. Furthermore, a circular nozzle angle guide that can rotate on the same plane as the cover is provided,
An elongated nozzle angle guide hole through which the nozzle tip penetrates is formed at the center of the nozzle angle guide,
A plurality of positioning holes are formed in the cover along the outer periphery of the nozzle angle guide,
The cutting fluid supply device according to claim 1, wherein a protrusion formed on a resin material fixed to the nozzle angle guide is fitted to the positioning hole.

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