JP3191321U - Cleaning tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cleaning tool mounted on a machining center capable of effectively cleaning and removing chips generated in a machining process of a work by a machining center in a wide range without limiting the cleaning range. SOLUTION: A cleaning tool 10 mounted on a spindle of a multi-axis movable machining center, and a joint portion 14 for incorporating a liquid passage portion to be joined to a coolant supply path provided on the spindle, and a joint portion 14 A discharge nozzle portion 16 is provided on the tip side 15 so as to be rotatable along the radial direction of the spindle. [Selection diagram] Fig. 1

Description

  The present invention relates to a cleaning tool mounted on a machining center used for cutting.

  Conventionally, a machining center is used to cut a workpiece. Such a machining center is configured such that a tool to be mounted on the main shaft can be automatically changed, and the main shaft can be controlled to move in the X-axis, Y-axis, and Z-axis directions orthogonal to each other.

  When a workpiece as a workpiece is cut by such a machining center, a large amount of chips adhere to the inner wall of the machine or the workpiece. Therefore, conventionally, a shower gun as an optional tool of a machining center has been used, or chips have been washed using shower coolant.

  However, since it is necessary for the shower gun to be held by the operator to perform the cleaning operation, the cleaning operation is complicated. In addition, there is a so-called “ceiling shower coolant” in the shower coolant. “Ceiling Shower Coolant” is mounted on the upper part of the machining center and is configured to spray the coolant downward in the form of a shower. Even when the cleaning is performed, the chips may solidify over time, and may not be removed by sufficient cleaning.

  Some shower coolants are so-called “center through coolants”. “Center-through coolant” means that the cleaning liquid is discharged from a hole formed at the tip of the tool with a predetermined pressure through a coolant supply passage provided along the axial direction in the main shaft of the machining center and in the tool. It is configured to remove chips.

  However, in such a conventional “center through coolant”, it is possible to move the main shaft in a three-dimensional direction. Since it is impossible to tilt the spindle and the tool itself, there is a problem that the cleaning range is limited, and the workpiece and the inner wall of the machine cannot be sufficiently cleaned.

From such a viewpoint, the technique described in Patent Document 1 has been proposed.
This technique includes a coolant jet nozzle that has a side-through coolant holder, is attached to a spindle of a machining center, and is formed to be rotatable in the vertical direction.

However, since Patent Document 1 only converts the rotational driving force of the spindle of the machining center into the vertical rotation of the nozzle tip, it cannot be rotated in the horizontal direction, and the cleaning range is still limited. As a result, there has been a problem that the chips adhering to the inner wall of the machine cannot be washed and removed over a wide range.
Published Patent No. 4-315545

  Therefore, the present invention is based on such a conventional request, and is a machining center that can effectively clean and remove chips generated in the cutting process of the workpiece by the machining center in a wide range without limiting the washing range. It is an object to provide a cleaning tool to be attached.

  In order to solve the above-mentioned problem, the device according to claim 1 is a cleaning tool attached to a main shaft of a multi-axis movable machining center, which is a liquid joined to a coolant supply path provided on the main shaft. The present invention is characterized by comprising a joining portion that houses the passage portion, and a discharge nozzle portion that is rotatably provided along the radial direction of the main shaft at the distal end side of the joining portion.

Therefore, according to the first aspect of the present invention, the discharge nozzle portion can be rotated in the radial direction of the main shaft, and the cleaning operation can be performed in combination with the multi-axis movable function of the machining center itself.
That is, cleaning is performed over a predetermined rotation angle in the radial direction of the main shaft, for example, the X-axis direction, in addition to the cleaning range associated with the movement of the main shaft in the X-axis, Y-axis, and Z-axis directions of the machining center. When the main shaft is rotated by a predetermined rotation angle while the discharge nozzle portion is rotated by a predetermined angle (inclined in the X-axis direction) in the main shaft radial direction, Cleaning can be performed while tilting at a predetermined angle.

  Further, as described above, when the main nozzle is continuously rotated in a state where the discharge nozzle portion is rotated by a predetermined angle in the main shaft radial direction (inclined in the X-axis direction), the discharge nozzle portion is radially in the Y-axis direction. While coolant can be ejected, when the discharge nozzle portion is set in a state along the main axis, it can be ejected linearly.

In the invention according to claim 2, the discharge nozzle portion includes a discharge nozzle portion main body, a rotation portion that rotatably fixes the discharge nozzle portion main body to the joint portion, and the rotation portion. It has the brake part which can be stopped at a position, It is characterized by the above-mentioned.
Therefore, in the device according to the second aspect, the discharge nozzle portion can be rotated in a state where the rotation speed is attenuated by the braking portion, and can be fixed at a predetermined angular position.

The invention according to claim 3 is characterized in that the rotation angle of the discharge nozzle portion is regulated by abutting on a regulating portion provided in the machining center.
Therefore, according to the third aspect of the invention, by utilizing the multi-axis movable control function of the machining center, the angle of the discharge nozzle portion with respect to the main shaft is appropriately set by bringing the discharge nozzle portion into contact with the restriction portion. It can be changed.

According to a fourth aspect of the present invention, the restricting portion is a shaft portion erected in the vertical direction.
In the device according to claim 5, the rotating part has a rotating shaft part which penetrates the rotating part and fixes the rotating part to the joint part so as to be rotatable. It is characterized by that.
Therefore, in the device according to claim 5, the discharge nozzle portion rotates around the rotation shaft portion as a rotation center.

  In the invention according to claim 6, the liquid passage portion is formed by a main liquid passage portion and a branched liquid passage portion formed downstream of the main liquid passage portion and branched from the main liquid passage portion. In addition, the rotating shaft portion is formed in a hollow shape, and has a flow path that communicates with the branch liquid passage portion and communicates with the discharge nozzle portion.

  Accordingly, in the invention according to claim 6, the coolant reaches from the coolant supply passage of the main shaft to the branch liquid passage portion via the main liquid passage portion, and then to the discharge nozzle via the flow passage in the rotating shaft portion. Supplied to the department.

The invention according to claim 7 is characterized in that the braking portion is constituted by a disc spring attached to the rotating shaft portion and pressed against the rotating shaft portion holding portion.
Therefore, in the invention according to claim 7, the disc spring is pressed against the rotary shaft holding portion to attenuate the rotation speed and fix it at a predetermined angular position.

The invention according to claim 8 is characterized in that the discharge nozzle portion rotates 240 degrees along the radial direction of the main shaft.
Therefore, in the device according to the eighth aspect, the discharge nozzle portion can perform cleaning not only in front of the discharge nozzle portion but also behind the discharge nozzle portion, that is, in the main axis direction.

  The cleaning tool according to any one of claims 1 to 8, wherein the joint has a liquid passage portion that is internally joined to a coolant supply passage provided on a spindle of the machining center, and is rotatable to the tip side of the joint. Since the discharge nozzle portion provided in the machining center is provided, a wide range of cleaning operations can be performed in combination with the multi-axis movable function of the machining center itself.

That is, as described above, in addition to the cleaning range in the moving direction of the X axis, the Y axis, and the Z axis of the machining center, a predetermined rotation angle (tilt angle) in the radial direction of the main shaft, for example, the X axis direction. In addition, when the discharge nozzle portion is rotated by a predetermined angle in the main shaft radial direction and the main shaft is rotated by a predetermined rotation angle, it is further determined in the Y-axis direction. Cleaning can be performed in an inclined state.
Further, as described above, when the main shaft is continuously rotated in a state where the discharge nozzle portion is rotated by a predetermined angle in the main shaft radial direction, the coolant can be ejected radially in the Y-axis direction. On the other hand, when the discharge nozzle part is set in a state along the main axis, it can be injected linearly, so that unlike the conventional case, the coolant can be injected in various variations, and a wide range of cleaning is performed. Therefore, it can wash | clean until it reaches every corner of a workpiece | work and a machine wall, and can remove a chip | tip effectively.

  In the invention according to claims 3 and 4, the rotation angle of the discharge nozzle portion is restricted by contacting a restriction portion provided in the machining center, and the restriction is made using the multi-axis movable control function of the machining center. Since the angle of the discharge nozzle part can be appropriately changed by bringing the discharge nozzle part into contact with the part, the rotation control of the discharge nozzle part is performed without providing a separate rotation drive mechanism for the discharge nozzle part. Therefore, a wide range of cleaning can be performed with the manufacturing cost reduced.

  According to the sixth aspect of the present invention, the coolant reaches from the coolant supply passage of the main shaft to the branch liquid passage portion via the main liquid passage portion, and to the discharge nozzle portion via the flow passage in the rotating shaft portion. Since it is configured to be supplied, the coolant supplied with a predetermined pressure from the coolant supply passage of the main shaft is supplied to the discharge nozzle portion through the flow passage in the rotating shaft portion, and the coolant is supplied. Since the supply pressure is attenuated in the flow path in the rotation shaft portion, it is possible to prevent a change in the rotation angle of the discharge nozzle portion due to the coolant supply pressure, and the coolant injection angle of the desired discharge nozzle portion Can be maintained.

  In the invention according to claim 7, the disc spring is configured to attenuate the rotation speed by being pressed against the rotation shaft portion holding portion and to fix the disc spring at a predetermined angular position. When the nozzle portion is set at an arbitrary rotation angle position by the restriction portion, the cleaning operation can be performed while being fixed at the rotation angle position, so that a stable cleaning operation at a predetermined angle position is possible. Become.

  In the invention according to claim 8, since the discharge nozzle portion can be cleaned not only in front of the discharge nozzle portion but also behind the discharge nozzle portion, that is, in the main axis direction, Compared to this, cleaning can be performed over a wide range.

FIG. 1 is a perspective view showing an embodiment of a cleaning tool according to the present invention, and is a view showing a case where a discharge nozzle portion is tilted by turning a predetermined angle in the X-axis direction of a machining center. FIG. 2 is a perspective view showing an embodiment of the cleaning tool according to the present invention and showing a state where the cleaning tool is attached to the spindle of the machining center in the same state as FIG. FIG. 3 shows an embodiment of the cleaning tool according to the present invention, and is a longitudinal sectional view in a state in which the discharge nozzle portion angle is adjusted so that the discharge nozzle portion and the joint portion are arranged coaxially. FIG. 4 is a plan view showing an embodiment of the cleaning tool according to the present invention, showing a state where the cleaning tool is mounted on the main shaft of the machining center, and is a conceptual diagram indicated by a rotation range and a dotted line of the discharge nozzle portion.

Hereinafter, a cleaning tool according to the present invention will be described in detail with reference to the drawings based on embodiments.
As shown in FIGS. 1 to 4, the cleaning tool 10 according to the present embodiment is mounted on a spindle 11 of a machining center.

As shown in FIGS. 2 and 3, the cleaning tool 10 includes a joint portion 14 that includes a liquid passage portion 12 that is joined to a coolant supply passage (not shown) provided in the main shaft 11, and the joint portion 14. A discharge nozzle portion 16 is provided on the distal end side 15 so as to be rotatable along the radial direction of the main shaft 11, that is, along the X-axis plane, the Y-axis plane, and the Z-axis plane.

The joint portion 14 is formed so as to protrude coaxially at the front end portion of the main body portion 41 and the main body portion 41 formed in a large diameter, the joint portion main body 13 formed coaxially and protruded at the rear end portion of the main body portion 41. And a nozzle holding part 42.
As shown in FIG. 3, the joint body 13 is formed as a tapered cylindrical portion having a diameter that decreases as the outer peripheral surface portion moves rearward. A large-diameter coolant channel 43 is formed inside the joint body 13. A joint hole 31 is provided so as to penetrate in the direction.

  Various types of engagement between the cleaning tool 10 and the main shaft 11 exist such as HSK type, BT shank type, and NT type, and can be selected as appropriate. In the present embodiment, the HSK type is described as an example. To do.

  A small diameter coolant channel 44 communicating with the coolant channel 43 is formed inside the main body 41, and the liquid channel unit 12 is formed by the coolant channel 43 and the coolant channel 44. The nozzle holding portion 42 has a cylindrical base end portion and is formed in a substantially U-shaped side surface, and a pair of nozzle holding portions 47 and 47 constituting the rotating shaft holding portion 21 are provided at the distal end portion. Is provided. 1 and 2 show a state in which the discharge nozzle portion 16 has a rotation angle of an angle θ from the axial direction of the main shaft 11 in the X-axis direction in the machining center.

As shown in FIG. 3, the discharge nozzle section 16 includes a discharge nozzle section main body 17, a rotation section 18 that fixes the discharge nozzle section main body 17 to the joint section 14 so as to be rotatable, and the rotation section 18. It is comprised by the brake parts 19 and 19 which can be stopped at a predetermined position.
The rotating portion 18 is formed in a substantially cubic shape having a peripheral surface portion 49 at the rear end, penetrates the rotating portion 18, and fixes the rotating portion 18 to the joint portion 14 so as to be rotatable. The rotating shaft 20 is fixed to the nozzle holding pieces 47 and 47 so as to be rotatable. The discharge nozzle part main body 17 has a nozzle shaft part 50 and a small-diameter nozzle 51 projecting from the tip part of the nozzle shaft part 50. The nozzle shaft part 50 has an axial direction inside. Thus, an outflow passage 52 is formed, and an ejection hole 54 is provided at the tip.

The braking portion 19 is mounted on the axial end portion of the rotating shaft portion 20, and is configured by a disc spring 22 that presses against the inner side surface portion of the nozzle holding pieces 47, 47 and a washer 23 that suppresses wear of the disc spring 22. Yes.
In the present embodiment, the disc spring 22 acts on the rotating portion 18 with a pressing force that can be stopped at a desired angular position when the discharge nozzle portion 16 is rotated in the X-axis direction. The spring constant that can be made is set.

As shown in FIG. 4, the discharge nozzle portion 16 does not have a unique angle adjusting mechanism, and the machining center is provided on the side surface of the restricting portion 25 that is provided in the machining center and includes a shaft portion 24 that is erected in the vertical direction. By making contact with the main shaft 11 while using the drive control mechanism provided, the rotation angle is appropriately regulated.
In the present embodiment, it is configured to be capable of rotating up to a total of 240 degrees in each of 120 degrees on both sides from the axial direction of the main shaft 11 along the X-axis, Y-axis, and Z-axis plane directions.

The liquid passage portion 12 is formed downstream of the main liquid passage portion 26 and the main liquid passage portion 26. The liquid passage portion 12 is branched into two in the Y-axis direction from the main liquid passage portion 26, and then bent at a right angle. It is comprised by the branch liquid path parts 27 and 27 connected to the axial direction both ends of the part 20. FIG.
A hole communicating with the outside of the branch liquid passage portion 27 bent at a right angle and the portion located on the distal end side of the joint portion 14 is provided with a plug 36 and sealed to prevent coolant from leaking out.

  The rotating shaft portion 20 is located downstream of the branch liquid passage portions 27, 27, the inside is hollow and a gap portion 46 is formed, and both end portions 40 in the axial direction are filled with coolant by plugs 36. Sealed to allow leakage.

  The rotating shaft portion 20 has small-diameter portions 28, 28 whose diameters are narrowed at the contact surfaces with the branch liquid passage portions 27, 27 at both axial end portions 40, 40. Are provided with two inflow hole portions 29 and 29 each serving as a flow path from the branch liquid passage portion 27 to the rotating shaft portion 20 so as to face each other in the radial direction.

In addition, two outflow hole portions 30 and 30 are provided in the axial direction center of the rotation shaft portion 20 diagonally in the radial direction, and further correspond to the outflow hole portions 30 and 30 in the rotation portion 18. A short cylindrical gap 45 having a diameter larger than the diameter of the fixed shaft portion 20 is formed at a portion to be formed, and a flow path from the rotating shaft portion 20 to the discharge nozzle portion 16 is formed.
The coolant that has flowed into the rotary shaft portion 20 from the inflow holes 29, 29 flows out of the outflow hole 30 via the gap 46 and is supplied to the outflow path 52 via the short cylindrical gap 45.

As shown in FIG. 3, the nozzle holding portion 42 is provided with a centering portion 33 at an intermediate portion between the two branched liquid passage portions 27 and 27 arranged in parallel.
The centering portion 33 is provided on the spring 34 disposed in the cylindrical gap portion 48, the ball 35 urged outward by the cylindrical gap portion 48 by the spring 34, and the peripheral surface portion 49 of the rotating portion 18. And a hole 53 with which the ball 35 can be engaged.

  In addition, the rotation shaft portion 20 is fixed to the main body of the rotation portion 18 by a fixing screw 32 having a conical tip at the center in the axial direction, so that the rotation shaft portion 20 and the discharge nozzle portion 16 are rotated together. Operate.

Hereinafter, the operation of the cleaning tool 10 according to the present embodiment will be described with reference to FIGS. 1 to 4.
When cleaning a workpiece or a machine wall using the cleaning tool 10 according to the present embodiment, the cutting tool mounted by the ATC is removed from the main shaft 11 and the cleaning tool 10 is mounted on the main shaft 11. .

  In this case, first, a so-called “centering” operation of the discharge nozzle portion 16 is performed. That is, since the centering portion 33 constituted by the spring 34 and the ball 35 is provided in the joint portion 14, the axial direction of the joint portion 14 and the axial direction of the discharge nozzle portion 16 are overlapped to form the discharge nozzle portion 16. Is arranged along the axial direction of the joint portion 14, “centering” is performed on the joint portion 14 of the discharge nozzle portion 16.

  In the “centering” operation of the discharge nozzle portion 16, when the stainless ball 35 of the centering portion 33 is fitted in the hole portion 53, a response due to a click feeling can be felt. In this state, the discharge nozzle unit 16 can be accurately centered.

  Next, the cleaning tool 10 is fixed to the main shaft 11 in this state. In this case, the steel ball formed on the spindle 11 side of the machining center is engaged with the pair of engagement holes 31 formed in the radial direction of the engagement portion 39 from the outside in the radial direction, and is fixed. The cleaning tool 10 is fixed to the main shaft 11. The cleaning tool 10 fixed to the main shaft 11 as described above rotates in conjunction with the rotation α of the main shaft 11.

  Further, as described above, the discharge nozzle portion 16 is arranged coaxially with the joint portion 14 and the main shaft 11 by performing the “centering” operation. By registering the position in the direction of the axis and the Z-axis as a reference position in the control unit of the machining center, the angle and position can be controlled appropriately by the control unit of the machining center with respect to the rotation angle position when the discharge nozzle unit 16 is rotated. The cleaning operation can be performed.

When coolant is supplied in the drive control of the machining center, the coolant is supplied from a main liquid passage portion 26 including coolant passages 43 and 44 provided in the joint portion 14 from a passage (not shown) in the main shaft 11. It reaches the branch liquid channel portions 27 and 27.
After that, at the leading ends of the branch liquid passage portions 27, 27, the inflow hole portions 29, 29 provided in the rotation shaft portion 20 enter the gap portion 46 in the rotation shaft portion 20, and the outflow hole portion 30, the gap portion. It is ejected from the ejection hole 54 to the outside of the ejection nozzle portion 16 via the outflow passage 52 of the ejection nozzle portion 16 via 45.

Therefore, in this state, since the discharge nozzle portion 16 is disposed on the same axis as the main shaft 11, the coolant is ejected straight along the axial direction of the main shaft 11.
As a result, in this state, the spindle in the X-axis direction, the Y-axis direction, and the Z-axis direction as appropriate in the posture state of the discharge nozzle unit 16 that ejects coolant coaxially with the spindle 11 by drive control by the control unit of the machining center. By moving 11, the cleaning tool 10 can be made to follow and be moved, and a necessary portion can be cleaned.

In the present embodiment, the coolant reaches from the coolant supply passage of the main shaft 11 to the branch liquid passage portions 27 and 27 via the main liquid passage portion 26, and the gap portion in the rotating shaft portion 20. 46, the coolant supplied from the coolant supply passage of the main shaft 11 with a predetermined pressure is supplied to the outflow passage 52 of the discharge nozzle portion 16 through the rotation shaft portion. 20, the coolant supply pressure is attenuated in the space 46 in the rotating shaft 20, and the rotation angle of the discharge nozzle 16 due to the coolant supply pressure. Thus, the coolant ejection angle of the desired discharge nozzle portion 16 can be maintained.
Note that this effect is the same when the discharge nozzle portion 16 is rotated and inclined at a predetermined angle in the X-axis direction.

  Next, when it is desired to change the coolant injection direction to the X-axis direction (horizontal direction), the main shaft 11 is moved in the X-axis direction under the control of the machining center, and the tip portion of the discharge nozzle portion 16 is the shaft portion that is the restriction portion 25. 24.

  By this contact operation, the rotating portion 18 rotates by a predetermined angle downward in FIG. 4 with the rotating shaft portion 20 as the rotation center. In this case, the rotating part 18 rotates about the rotating shaft part 20 as the center of rotation, but the ball 35 constituting the centering part 33 is pressed by the peripheral surface part 48 and resists the urging force of the spring 34. The discharge nozzle portion 16 is smoothly rotated because the engagement with the hole portion 53 is released by retreating into the hollow portion 48.

  Further, in the present embodiment, since the rotating shaft portion 20 is provided with the braking portions 19, 19, the rotating speed is controlled by the disc springs 22, 22 constituting the braking portion 19 during rotation. Since it is attenuated and braked so that it can be stopped at a desired angular position, the discharge nozzle portion 16 can be stopped at a desired rotation angle.

  Therefore, in the present embodiment, as shown in FIGS. 1 and 2, the main shaft 11 can be inclined along the horizontal direction by an angle θ from the axial direction of the main shaft 11. Thus, cleaning can be performed by ejecting coolant in the direction of the angle θ in the left direction.

  In this case, the angle setting of the discharge nozzle portion 16 can be appropriately adjusted according to the moving distance dimension of the main shaft 11 in the X-axis direction from the initial position. That is, for example, as shown in FIG. 4, when the nozzle 11 is jetted to the right in the horizontal direction toward the angle θ from the axial direction of the main shaft 11 as opposed to the above, the main shaft 11 is once raised in the Y-axis direction. After overcoming the restricting portion 25 and being positioned above the restricting portion 25 in the direction of FIG. 4, the discharge nozzle portion 16 is brought into contact with the restricting portion 25. Accordingly, the coolant can be ejected by rotating the discharge nozzle portion 16 in the opposite direction (rightward in front of the main shaft 11).

  Further, in the present embodiment, as shown in FIG. 4, the discharge nozzle portion 16 is configured to rotate 240 degrees in the X-axis direction in the axial direction of the main shaft 11 in the X-axis direction. Therefore, by controlling the amount of movement of the main shaft 11 in the X-axis direction at the machining center, it can be rotated from the axial direction of the main shaft 11 to an angle of 120 degrees on each side. When it is rotated to the end, the coolant can be ejected in the direction of the base end portion of the main shaft 11, and a very wide range of cleaning is possible.

  Further, for example, when the main shaft 11 is rotated by a predetermined rotation angle by drive control of the machining center with the discharge nozzle portion 16 rotated by a predetermined angle in the X-axis direction, the discharge nozzle portion 16 is moved in the Y-axis direction. In this state, the cleaning can be performed in a state inclined at a predetermined angle, and the cleaning can be performed by ejecting the coolant upward and downward of the main shaft 11.

  In addition, when the main shaft 11 is continuously rotated by the drive control of the machining center with the discharge nozzle portion 16 rotated by a predetermined angle in the X-axis direction of the main shaft 11, a radial shape with a predetermined angle in the Y-axis direction is obtained. Therefore, it is possible to perform a three-dimensional efficient cleaning operation.

  As a result, by using the cleaning tool 10 according to the present embodiment, the coolant can be ejected in various variations using only one cleaning tool 10, and as a result, a wide range of cleaning can be performed in the machining center. Therefore, it can wash | clean until it reaches every corner of a workpiece | work and a machine wall, and can remove a chip | tip effectively.

  In the above-described embodiment, the example in which the restricting portion 25 is the shaft portion 24 provided in the machining center in the vertical direction has been described. It may be a shaft portion or a convex shape. Further, the specific configuration of the cleaning tool 10 is not limited to the above embodiment.

  The cleaning tool according to the present invention is capable of cleaning a workpiece and an inner wall of a machine with an unprecedented valuation and widely used in a machining center, and has industrial applicability.

DESCRIPTION OF SYMBOLS 10 Cleaning tool 11 Main axis | shaft 12 Liquid path part 13 Joint part main body 14 Joint part 15 Front end side 16 Discharge nozzle part 17 Discharge nozzle part main body 18 Rotating part 19 Brake part 20 Rotating shaft part 21 Rotating shaft part holding part 22 Disc spring 23 Washer 24 Shaft portion 25 Restriction portion 26 Main liquid passage portion 27 Branch liquid passage portion 28 Small diameter portion 29 Inflow hole portion 30 Outflow hole portion 31 Engagement hole portion 32 Fixing screw 33 Centering portion 34 Spring 35 Ball 36 Plug 37 Discharge nozzle Rear end portion 38 Conical concave portion 39 Engaging portion 40 Axial end portions 41 Main body portion 42 Nozzle holding portion 43 Coolant flow path 44 Coolant flow path 45 Short cylindrical void portion 46 Gap portion 47 Nozzle holding piece 48 Cylindrical void Part 49 Peripheral surface part 50 Nozzle shaft part 51 Nozzle 52 Outflow path 53 Hole part 54 Ejection hole

Claims (8)

  A cleaning tool mounted on a main shaft of a multi-axis movable machining center, wherein the main shaft is provided at a front end side of the joint portion, the joint portion including a liquid passage portion joined to a coolant supply passage provided on the main shaft. A cleaning tool comprising: a discharge nozzle portion rotatably provided along a radial direction of the nozzle.   The discharge nozzle portion includes a discharge nozzle portion main body, a rotation portion that fixes the discharge nozzle portion main body to the joint portion so as to be rotatable, and a braking portion that can stop the rotation portion at a predetermined position. The cleaning tool according to claim 1, wherein:   The cleaning tool according to claim 2, wherein the rotation angle of the discharge nozzle unit is regulated by contacting a regulation unit provided in a machining center.   The cleaning tool according to claim 2, wherein the restricting portion is a shaft portion erected in the vertical direction.   The cleaning part according to claim 2, wherein the rotating part has a rotating shaft part that penetrates the rotating part and fixes the rotating part to the joint part so as to be rotatable. Ingredients.   The liquid passage portion is formed by a main liquid passage portion and a branch liquid passage portion formed downstream from the main liquid passage portion and branched from the main liquid passage portion, and the rotating shaft portion is hollow. The cleaning tool according to claim 1, further comprising a flow passage formed therein and communicating with the branch liquid passage portion and communicating with the discharge nozzle portion.   The cleaning tool according to claim 2, wherein the braking portion is configured by a disc spring that is attached to the rotating shaft portion and press-contacts the rotating shaft portion holding portion. The cleaning tool according to claim 1, wherein the discharge nozzle portion rotates 240 degrees along a radial direction of the main shaft.