JP4851153B2 - Nozzle fixing structure - Google Patents

Description

  The present invention relates to a nozzle fixing structure for fixing, for example, a nozzle for discharging a fluid such as a cutting fluid in a state in which the nozzle is directed in a predetermined direction.

  2. Description of the Related Art Conventionally, for example, in a machine tool that performs processing with a tool rotatably attached to a spindle, a spindle head is provided around the spindle and a nozzle that discharges cutting fluid is provided on the inner surface of the spindle head. A technique for supplying a cutting fluid to the cutting edge of the blade is known. In applying this technique, for example, by adopting a nozzle as described in Patent Document 1 or a spherical nozzle, the discharge direction of the fluid discharged from the nozzle may be freely adjustable. And when fixing in the state which orient | assigned the spherical nozzle to the desired direction, it fixed by the method as described below.

A conventional nozzle posture adjustment and fixing operation will be described with reference to FIG. FIG. 3 is a cross-sectional explanatory view showing the conventional nozzle posture adjustment and fixing operation.
A spindle head 31 is erected around the spindle to which the tool is attached, and a concave portion 34 in which a spherical nozzle 33 can be embedded is provided on the inner wall surface of the spindle head 31. The recess 34 is embedded in the order of a nozzle receiver 35, a nozzle 33, and a nozzle presser 36. In adjusting the posture of the nozzle 33, the nozzle holder 36 is once loosened, a thin rod-shaped adjustment member 38 is inserted into the discharge port 37 of the nozzle 33, and the nozzle 33 is rolled on the nozzle receiver 35 to discharge the discharge port 37. In the desired direction (determining the posture of the nozzle 33), after the adjustment member 38 is removed from the discharge port 37, the nozzle holder 36 is screwed with the hexagon wrench 39, and the nozzle 33 is fixed in the aforementioned posture. .

Japanese Utility Model Publication No. 51-29531

  However, in the nozzle fixing structure as described above, even if the nozzle 33 is adjusted to a desired posture by the adjustment member 38, the adjustment member 38 must be removed from the discharge port 37 when the nozzle holder 36 is screwed with the hexagon wrench 39. Therefore, there is a problem that the posture of the nozzle 33 is displaced when the nozzle holder 36 is screwed and the fluid cannot be discharged in a desired direction. This problem becomes even more remarkable when the shape of the nozzle 33 is spherical as described above.

  Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to provide a nozzle fixing structure that can be reliably fixed in a desired posture even if it is a spherical nozzle.

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is a nozzle press for fastening and fixing the nozzle in the casing by being screwed into a nozzle housed in the casing by a jig. And a nozzle fixing structure in which an adjustment member is inserted into an opening of the nozzle from an opening provided in the nozzle presser so that the posture of the nozzle can be adjusted in the casing. A fastening auxiliary member that is detachably attached to the nozzle pressing member, and a locking portion that protrudes from the casing when attached to the nozzle pressing member is provided on the clamping auxiliary member, and the adjusting member is connected to the discharge port. leave Merged state to by Rukoto is engaged with the jig with the locking portion, characterized in that the fixable clamping the nozzle.
The invention according to claim 2 is the invention according to claim 1 , wherein the tightening auxiliary member is detachable from the nozzle pressing opening, and the tightening auxiliary member is attached to the nozzle pressing. An insertion hole is provided which communicates with the discharge port of the nozzle in a state and can guide the adjustment member to the discharge port.

According to the present invention, the nozzle pressing member can be screwed with the jig while the adjustment member is inserted into the nozzle outlet (that is, the nozzle is held in a desired posture). Therefore, even if it is a spherical nozzle or the like, the posture does not shift when the nozzle presser is screwed, and the nozzle can be securely fixed while being held in a desired posture.
Moreover, the freely tightening assisting member removably provided with respect to Roh nozzle retainer, the該締with auxiliary members, since the provided a locking portion protruding from the casing in the mounted state of the injector push, for example, the locking portion Protruding does not interfere with tool installation or replacement.
Furthermore, according to the invention of claim 2, since the auxiliary tightening member is detachable from the opening of the nozzle press, the nozzle press is separately processed (for example, can be engaged with the auxiliary tightening member). It is not necessary to provide a simple engaging portion, etc., and is applicable to a conventionally used nozzle presser and is versatile. Furthermore, by making the tightening auxiliary member detachable with respect to the opening of the nozzle presser, the mounting operation of the tightening auxiliary member, and in turn, the fixed setup (adjustment setup) of the nozzle can be performed very easily. Easy to use. In addition, although it is configured to be attached to and detached from the opening of the nozzle presser, the tightening auxiliary member communicates with the nozzle discharge port when attached to the nozzle presser, and the adjustment member can be guided to the discharge port. Since the insertion hole is provided, the nozzle can be reliably fixed while being held in a desired posture without impairing the above effect.

  Hereinafter, a nozzle fixing structure according to an embodiment of the present invention will be described with reference to the drawings. In the present embodiment, the nozzle is described as a cutting fluid supply nozzle provided around the spindle of a machine tool as an example.

  FIG. 1 is a partial explanatory view showing a part of the machine tool 1. 2A is a cross-sectional explanatory view showing how the posture of the nozzle 10 is adjusted and fixed, and FIG. 2B shows how the posture of the nozzle 10 is adjusted and fixed from the spanner 20 side. FIG. In FIG. 1, the Z-axis direction is the left-right direction (horizontal), and the Y-axis direction orthogonal to the Z-axis direction is the front-rear direction (horizontal). The X-axis direction is orthogonal to the Z-axis direction and is an inclined direction with respect to the vertical direction.

  The machine tool 1 is provided with a column 4 on a bed 2 so as to be slidable in the Z-axis direction. The column 4 is provided with a spindle head 5 having a spindle (not shown). The spindle head 5 is slidable in the column 4 in the X-axis direction orthogonal to the Z-axis, and is rotatable around the axes orthogonal to the Z-axis and X-axis (B direction). In addition, a spindle to which the tool T can be attached is provided at the lower end of the spindle head 5, and the attached tool T can be rotated around the X axis. Further, a spindle front cover 6 (shown in FIG. 2) is provided on the lower end surface of the spindle head 5 so as to surround the periphery of the spindle. The bed 2 is also provided with a tool post 3 having a tool magazine 7 having a plurality of tool holders 7a, 7a,. The tool post 3 is slidable on the bed 2 in the Z-axis direction and the X-axis direction, and is provided with a tool magazine 7 so as to be rotatable around the Z-axis, and a tool holder 7a storing a desired tool. Machining is performed by indexing to the machining position.

  A concave portion 9 is provided on the inner wall surface of the spindle front lid 6, and a spherical nozzle 10 is embedded in the concave portion 9. The nozzle 10 is sandwiched between the nozzle receiver 11 and the nozzle holder 12 and is fixed in the recess 9 by tightening the nozzle holder 12. On the other hand, the nozzle presser 12 is a member provided in a cylindrical shape, and the opening (engagement recess) provided on the outer side surface (the nozzle 10 contact surface is the inner side surface) is formed in a hexagonal shape. Yes. The nozzle 10 is connected to a cutting fluid supply source (not shown) so that the cutting fluid can be discharged from the discharge port 15.

  Here, the tightening auxiliary member 13 used for tightening the nozzle presser 12 will be described. The tightening auxiliary member 13 is formed by integrally forming a large-diameter portion (engagement portion) and a small-diameter portion (engagement convex portion) each formed in a hexagonal shape, and includes a large-diameter nut and a small-diameter nut. Are in contact with each other with their centers aligned. The small diameter portion of the tightening auxiliary member 13 is provided with the same shape and size as the opening of the nozzle presser 12, and the small diameter portion is fitted into the opening of the nozzle presser 12 as shown in FIG. By wearing, it can be easily attached to the nozzle presser 12. In addition, the rotational force applied to the tightening auxiliary member 13 in the attached state can be transmitted to the nozzle presser 12 (that is, the nozzle presser 12 and the tightening auxiliary member 13 can be engaged). Furthermore, the large-diameter portion of the fastening assisting member 13 functions as a locking portion that locks with the spanner (jig) 20. In addition, an insertion hole 14 is formed in the tightening auxiliary member 13 so as to penetrate along the axial direction.

The adjustment and fixing operation of the nozzle 10 using the tightening auxiliary member 13 as described above will be described below.
First, the tightening assisting member 13 is attached to the nozzle retainer 12, and the spanner 20 loosens the nozzle retainer 12 via the tightening assisting member 13 so that the posture of the nozzle 10 can be adjusted (the fixing of the nozzle 10 is released). Next, with the tightening auxiliary member 13 attached, a thin rod-shaped adjustment member 19 is inserted into the discharge port 15 of the nozzle 10 through the insertion hole 14 so that the cutting fluid is discharged in a desired direction. 10 postures are adjusted. When the posture of the nozzle 10 is adjusted, the nozzle presser 12 is screwed in via the tightening auxiliary member 13 by the spanner 20 while the adjustment member 19 is inserted into the discharge port 15, and the nozzle 10 is moved to a desired position. Fix in posture. When the fixing is completed, the adjustment member 19 is removed from the discharge port 15 and the insertion hole 14 and the tightening auxiliary member 13 is removed from the nozzle presser 12.
As described above, the posture adjustment and fixing work of the nozzle 10 is performed.

  According to such a fixing structure of the nozzle 10, the nozzle pressing member 12 can be screwed while the adjustment member 19 is inserted into the discharge port 15 (that is, while the nozzle 10 is held in a desired posture). . Therefore, even if the nozzle 10 is spherical, the posture does not shift when the nozzle presser 12 is screwed, and the nozzle 10 can be fixed in a desired posture.

Further, since the tightening auxiliary member 13 is detachable from the nozzle presser 12, there is no situation where the tightening auxiliary member 13 obstructs the attachment or replacement of the tool.
Furthermore, since the small diameter portion of the tightening auxiliary member 13 can be attached simply by fitting into the opening of the nozzle presser 12, the fixed setup (adjustment setup) of the nozzle 10 can be performed very easily, and the usability is improved. Very good.

  The configuration of the nozzle fixing structure of the present invention is not limited to the aspect described in the above embodiment, and the shape and installation position of the nozzle, the type of fluid discharged from the nozzle, the tightening auxiliary member, The shape of the nozzle presser and the configuration relating to the engagement between the two can be appropriately changed as necessary without departing from the spirit of the present invention.

  For example, a spherical nozzle is employed in the above embodiment, but any shape nozzle may be used as long as it is fastened and fixed by a nozzle presser. The nozzle fixing structure of the present invention can also be applied to nozzles other than the nozzles provided on the inner surface of the main spindle front cover as described in the above embodiment. It is of course possible to provide a nozzle for discharging cutting fluid or the like to the tool provided on the table, and to apply it as a fixing structure for fixing the nozzle, or for nozzles other than machine tools. It is also possible to apply. Therefore, the fluid discharged from the nozzle is not limited to the cutting fluid, and there is no problem even if it is coolant, lubricating oil, dust removal air or the like.

Further, in the above-described embodiment, the tightening auxiliary member is detachable from the opening of the nozzle presser. However, the nozzle presser is provided with an engagement recess different from the opening and is engaged with the engagement recess. It is good also as a fixed structure which uses the clamping auxiliary member provided with the convex part (In addition, it can change suitably whether a convex part is provided in a nozzle holding | suppressing member or a clamping auxiliary member, and which is provided with a recessed part.) . In such a configuration, if the tightening auxiliary member is configured not to interfere with the opening when attached to the nozzle presser, it is not necessary to provide an insertion hole in the tightening auxiliary member.
Furthermore, in the above-described embodiment, the detachable tightening auxiliary member is provided with a locking portion for the spanner to lock. However, if it does not interfere with other operations such as tool replacement, it is related to the nozzle presser. It is also possible to provide a structure in which the stop portion is provided integrally and no separate member such as a tightening auxiliary member is used.

  In addition, in the said embodiment, although the opening part of the nozzle holding | maintenance is made into hexagonal shape, the shape of an opening part can be changed suitably. However, by forming the nozzle pressing opening in a hexagonal shape, when the precision of the nozzle posture is not so high that the tightening auxiliary member has to be used, the tightening auxiliary member is not used. There is a merit that the nozzle can be fixed with a hexagon wrench (ie, it is versatile).

It is a partial explanatory view showing a part of a machine tool. (A) is sectional explanatory drawing which showed a mode that the attitude | position of a nozzle was adjusted and fixed, (b) is explanatory drawing which looked at a mode that the attitude | position of a nozzle is adjusted and fixed from the spanner side. It is sectional explanatory drawing shown about the attitude | position adjustment and fixing operation | work of the conventional nozzle.

Explanation of symbols

  6 .. Spindle front cover, 9 .. Recessed part 10 .. Nozzle, 11 .. Nozzle receiver, 12 .. Nozzle retainer, 13 .. Tightening auxiliary member, 14 .. Insertion hole, 15. 19. Adjusting member.

Claims (2)

It has a nozzle presser that fastens and fixes the nozzle in the casing by being screwed into a nozzle housed in the casing, and discharges the nozzle from an opening provided in the nozzle presser. A nozzle fixing structure in which an adjustment member is inserted into an outlet so that the posture of the nozzle can be adjusted in the casing,
A tightening auxiliary member that is detachable with respect to the nozzle presser is provided, and a locking portion that protrudes from the casing in a state of being attached to the nozzle presser is provided on the tightening auxiliary member, and the adjustment member is connected to the discharge port. and remain plugged by Rukoto is engaged with the jig with the locking portion, the nozzle fixing structure, characterized in that the fixable clamping the nozzle. The tightening auxiliary member is detachable from the opening of the nozzle presser, and communicates with the discharge outlet of the nozzle in the attached state to the nozzle presser, and the adjustment member is connected to the discharge port. The nozzle fixing structure according to claim 1 , further comprising an inductible insertion hole.

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