JP4751616B2 - Cleaning method and apparatus for tool mounting apparatus - Google Patents

Description

  The present invention relates to a cleaning method and apparatus in a tool mounting apparatus, and more particularly to a cleaning method and apparatus in a tool mounting apparatus that cleans a front end surface of a spindle by a cleaning blade mechanism provided on a holder body.

  2. Description of the Related Art Conventionally, in a tool attachment device for a machine tool, as a method of attaching a holder body to which a cutting tool (tool) is detachably attached, a so-called one surface is obtained by fitting a taper shaft portion of a holder body into contact with a taper hole of a spindle. A restraint method is in place.

  In recent years, as a means to increase the rigidity on the cutting tool side in order to cope with heavy cutting, etc., the taper shaft portion of the holder main body is fitted into the taper hole of the main shaft, and the end surface of the holder main body and the main shaft front end surface are brought into contact with each other. A so-called two-sided restraining method has been adopted in which restraint is performed.

  In the one-surface restraint method in which the taper shaft portion of the holder body is fitted and brought into contact with the taper hole of the main shaft described above, if dust such as cutting powder adheres to the taper fitting portion, the processing accuracy such as core blurring is affected. For this reason, machine tool manufacturers take various measures such as ejecting a compressed fluid (liquid or air) from the inner surface of the main shaft and blowing off dust such as cutting powder when the cutting tool is attached or detached.

  On the other hand, in the above two-surface restraining method, in addition to cleaning the taper fitting portion, it is necessary to clean the end surface of the holder body and the front end surface of the spindle, and various inventions have been proposed as this cleaning device. (For example, refer to Patent Document 1).

However, for dust such as cutting powder on the spindle front end surface side, it is difficult to reliably remove dust and chips due to the influence of cutting fluid adhering during processing, only by discharging liquid or compressed air. The current situation is that cutting powder or the like is biting and causing machining trouble.
JP 2003-311577 A

  The present invention pays attention to such conventional problems, and in particular in the two-surface restraint method, dust such as cutting powder adhering to the front end surface of the spindle is reliably removed by a contact-type cleaning blade mechanism, and the cutting powder or the like is caught. It is an object of the present invention to provide a cleaning method and apparatus in a tool mounting apparatus that can effectively prevent machining trouble caused by the above.

In order to achieve the above object, the first cleaning method in the tool mounting apparatus of the present invention includes a shank (3) and a pull-in clamp mechanism in a tapered hole (5b) provided in a main shaft (5) that can be driven to rotate. (4) via a detachably connected a cylindrical holder body (1), by using the rotational difference between the holder body (1) for rotating and following this the main shaft (5), the spindle (5 the front end surface of) (while the 5a) contacting the blade (10) of the cleaning blade mechanism (8) a cleaning method of cleaning, said main shaft (5) and the weight (11) the holder body with a (1) preparative still in the connected state via the clutch mechanism (2), the spindle (5) side abruptly rotating drives the rear end surface of the case, the spindle holder body to rotate with a delay from rotation (5) (1) the blade (10) of the cleaning blade mechanism provided (8), the rotational speed of the spindle (5) The gist is that the blade (10) performs cleaning while being in contact with the front end surface (5a) of the main shaft (5) during the time until the rotational speed of the holder body (1) rotates synchronously.

  Here, from the state where the main shaft and the holder main body are driven to rotate synchronously, the main shaft side is suddenly stopped, the clutch mechanism is disconnected by the centrifugal force of the holder main body, and the holder main body is rotated by the inertial force. During the cleaning, the blade can be cleaned while contacting the front end surface of the main shaft.

In addition, the cleaning method in the other tool mounting apparatus of the present invention includes a cylindrical holder through a shank (3) and a pull-in clamp mechanism (4) in a tapered hole (5b) provided in a rotatable spindle (5). A cleaning blade mechanism is connected to the front end surface (5a) of the main shaft (5 ) by detachably connecting the main body (1) and utilizing the rotation drive of the main shaft (5) and the rotation of the holder main body (1) following this. (8) a blade cleaning method of cleaning while contacting (10), the spindle (5) wait a rotation of (11) a clutch mechanism having (2) the holder body via a (1) the rotated when the connecting state is disconnected by the centrifugal force of the clutch mechanism (2) is the holder main body (1), suddenly stopping the rotation of the spindle (5), where the holder body (1) is an inertial force The cleaning blade provided on the rear end surface of the holder body (1) The gist is that the blade (10 ) of the raid mechanism (8) cleans the front end surface (5a) while contacting the front end surface (5a) of the main shaft (5) .

Further, the cleaning device in the tool mounting device of the present invention includes a cylindrical holder body ( 2) and a shank (3) provided with a clutch mechanism (2) and a shank (3) in a tapered hole (5b) provided in a main shaft (5) that can be rotationally driven. 1) connected removably said main shaft (5) pull provided on side through the clamping mechanism (4), the spindle-side end surface of the holder body (1) to (5a), the elastic member (6) and pin ( 7) , a removable cleaning blade mechanism (8) having a blade (10) urged to the front end surface (5a) side of the main shaft (5) is always provided, and this cleaning blade mechanism (8) A plurality of blade rings (9) spirally or radially arranged at predetermined intervals in the circumferential direction around the main shaft (5), and the main shaft front end surface (5a) of the blade ring (9) in the circumferential direction And a blade (10) made of a rubber-like elastic material protruding at a predetermined interval to the plurality of blade rings ( The gist of 9) is that the holder main body (1) is supported by the main shaft side end face (5a) side via an elastic member (6) and a pin (7) so as to be extendable and contractible .

Here, the blade (10) protruded from a plurality of blade rings (9) arranged spirally or radially at predetermined intervals in the circumferential direction around the main shaft (5) of the cleaning blade mechanism (8) , and arranged so that the tip side of the blade ring (9) is positioned in the rotational direction or a non-rotational direction of the main shaft (5), is shall provided in the circumferential direction of the surface of the blade ring (9).

  With this configuration, particularly in the two-surface restraint method, dust such as cutting powder adhering to the front end surface of the spindle can be reliably removed by the contact-type cleaning blade mechanism. Machining troubles can be effectively prevented.

  Since the present invention is configured as described above, particularly in the two-surface restraint method, dust such as cutting powder adhering to the front end surface of the spindle can be reliably removed by a contact-type cleaning blade mechanism. It is possible to effectively prevent a processing trouble caused by biting of the material and improve productivity.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 4 show a cleaning device for carrying out the first cleaning method of the present invention. FIG. 1 is a longitudinal front view of the cleaning device, FIG. 2 is a front view of a blade ring of a cleaning blade mechanism, and FIG. 3 is a plan view taken along the line AA in FIG. 1, and FIG. 4 is a bottom view taken along the line BB in FIG.

In FIG. 1, the cleaning device includes a detachable cylindrical holder main body 1, the holder main body 1, a clutch mechanism 2, and a shank 3, and can be rotationally driven through a pull-in clamp mechanism 4 such as a draw bar. It is detachably connected to the main shaft 5. A plurality of locations on the main shaft side end face side of the holder body 1 (in this embodiment, provided at three locations at intervals of 120 °, but not limited to the number), the main shaft is always provided via an elastic member 6 and pins 7. 5, a cleaning blade mechanism 8 urged toward the front end face 5a is detachably attached.

  As shown in FIGS. 2 and 3, the cleaning blade mechanism 8 includes a blade ring 9 supported on the main shaft side end surface 5a side of the holder body 1 via an elastic member 6 and a pin 7 so as to be extendable and contractable, and the blade ring 9 And a plurality of blades 10 made of rubber-like elastic material made of rubber, resin, or a mixture thereof, protruding from the front end surface 5a of the main shaft 9 at a predetermined interval in the circumferential direction.

Wherein the plurality of blades 10, the circumferential direction of the three surfaces of the blade ring 9 (in this embodiment are only set at three positions at 120 ° intervals, but is not limited to the number) protrude spirally Yes forms form Te, spiral direction of the blade 10, to accommodate the rotational direction of the main shaft 5 or the holder main body 1, it is desirable to prepare those formed in a clockwise or counterclockwise direction. This is because the cleaning residue is excreted inside unless the shape of the blade 10 is changed depending on the rotation direction of the main shaft 5.

  A weight 11 having a predetermined weight is attached to the outer peripheral surface of the cylindrical holder main body 1 with screws, screws 12 or the like, and a cylindrical member 13 is accommodated in the holder main body 1 and further cylindrical. Inside the member 13, the shank 3 is rotatably accommodated via a plurality of bearing members 14a, 14b. The shank 3 and the holder main body 1 are configured to be connected or separated via a clutch mechanism 2. The clutch mechanism 2 of the first embodiment has an arc shape formed on the outer peripheral surface of the shank 3. The concave portion 2a, a through hole 13a formed in the tubular member 13, and a lock member 2b always urged toward the concave portion 2a via an elastic member 13b in the through hole 13a.

  Further, a grip portion 14 having a V-shaped groove for clamping by an automatic tool changer (not shown) is formed on the outer peripheral surface of the rear end side of the holder body 1, and the cleaning blade mechanism 8 is provided inside the grip portion 14. The elastic member 6 and the pin 7 are embedded.

  Further, the rear end side of the shank 3 is formed with a taper shaft portion 3a that fits into the taper hole 5b of the main shaft 5. The end surface of the taper shaft portion 3a is replaced by a tool automatic changer (not shown). In this case, a positioning means 15 is formed which is composed of a pair of grooves having different depths for easy positioning.

  The taper shaft portion 3a is fitted and fixed to the taper hole 5b of the main shaft 5 by fitting a pull-in clamp mechanism composed of a draw bar, a clamp cylinder, etc. similar to the conventional one and pulling in the axial direction. is there.

  A positioning pin 16 and a fixing bolt 17 are provided on the front end face of the holder body 1 for facilitating positioning when the cleaning blade mechanism 8 is replaced. The holder body 1 is attached to the cylindrical member 13. It can be removed and can be positioned.

  Next, a cleaning method using the above-described cleaning device will be described.

  In the cleaning method according to the first embodiment of the present invention, first, the automatic tool changer (not shown) is used to hold the holder body 1 using the grip portion 14 having the V-groove, and the shank 3 of the holder body 1 is fixed. The taper shaft portion 3a is positioned and fitted into the taper hole 5b of the main shaft 5, and is further fitted in the taper hole 5b of the main shaft 5 by pulling in the axial direction by a drawing clamp mechanism (not shown) composed of a draw bar, a clamp cylinder or the like. Fix it together.

  At this time, the blade 10 provided on the blade ring 9 of the cleaning blade mechanism 8 provided on the holder body 1 is always urged and brought into contact with the elastic member 6 and the pin 7 toward the front end surface 5a side. is there.

  In such a state, the main shaft 5 side is suddenly rotationally driven in a certain direction (for example, clockwise) from the stationary state of the main body 5 and the holder body 1 to which the weight 11 connected via the clutch mechanism 2 is attached. Then, the holder body 1 provided with the weight 11 rotates with a delay of inertia for a predetermined time from the rotation of the main shaft 5. At this time, the blade 10 of the cleaning blade mechanism 8 provided on the rear end surface of the holder main body 1 is applied to the front end surface 5a of the main shaft 5 for a time until the rotation speed of the main shaft 5 and the rotation speed of the holder main body 1 rotate synchronously. It cleans while in contact.

  In other words, a plurality of spiral blades 10 come into contact with the front end surface 5a of the main shaft 5, rotate while scraping off dust, cutting oil, chips, etc. adhering to the front end surface 5a, and scraped off dust. Then, cutting oil and chips are discharged from the tip of the blade 10 to the outside.

  In the case of this embodiment, the front end surface 5a of the main shaft 5 is cleaned by the blade 10 while the holder body 1 rotates with a delay of inertia for a predetermined time from the rotation of the main shaft 5, so that the spiral direction of the blade 10 is As shown in FIG. 2, the chips are scraped outward in the direction opposite to the rotation direction of the main shaft 5.

  The cleaning method of the first embodiment is not limited to the above embodiment, and the rotation of the main shaft 5 side is rotated by the brake device 32 or the like from the state where the main shaft 5 and the holder body 1 are rotationally driven in synchronization. When the clutch mechanism 2 is disconnected due to the centrifugal force of the holder body 1 and the holder body 1 is rotated by the inertial force, the blade 10 is cleaned while being in contact with the front end surface 5a of the spindle 5. Is also possible.

  Next, FIGS. 5 to 8 show a second embodiment of the present invention, and the same components and operations as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  In the second embodiment, the clutch mechanism 2 of the first embodiment is slightly different from the mechanism of the first embodiment, and the cleaning method by the cleaning device is also slightly different from the first embodiment.

  That is, as shown in FIGS. 5 and 8, the clutch mechanism 2 according to the second embodiment is disposed between the concave portion 1a formed on the front end side of the holder body 1 and the outer peripheral surface of the front end of the shank 3. Arc-shaped concave portions 2c and 2d whose phases are shifted in the axial direction are formed on the outer peripheral surface of the tip 3, and two elastic members 19a and 19b supported by the pin 19 are formed on the outer peripheral surface of the shank 3. The flywheel members 20a and 20b having the function of a balance weight formed in the shape of two semicircular arcs connected to each other are attached so as to be sandwiched therebetween.

  The one end side of the flywheel members 20a and 20b is turnably supported by pins 21a and 21b serving as fulcrums, and the other end side of the flywheel members 20a and 20b is the two elastic members 19a and 19b. It is urged | biased so that the front-end | tip outer peripheral surface of the shank 3 may always be clamped with the elastic force of.

  Further, the flywheel members 20a and 20b are formed with holes 23 for receiving lock members 22a and 22b that fit into arcuate recesses 2c and 2d formed on the outer peripheral surface of the tip of the shank 3. It is always biased toward the recesses 2c and 2d. A weight 11a having a predetermined weight is attached to the outer peripheral surface on the front end side of the cylindrical holder main body 1 with screws, screws 12a or the like, and a cap member for enclosing the clutch mechanism 2 at the front end of the holder main body 1 24 is attached with a screw 25 or the like.

  Since other configurations are the same as those of the first embodiment, description thereof is omitted.

  In the cleaning method according to the second embodiment of the present invention, first of all, the gripping portion 14 having the V-groove of the holder body 1 is held by an automatic tool changer (not shown) and the shank 3 of the holder body 1 is fixed. The taper shaft portion 3a is positioned and fitted into the taper hole 5b of the main shaft 5, and is further fitted in the taper hole 5b of the main shaft 5 by pulling in the axial direction by a drawing clamp mechanism (not shown) composed of a draw bar, a clamp cylinder or the like. Fix it together.

  At this time, the blade 10 provided in the blade ring 9 of the cleaning blade mechanism 8 provided in the holder main body 1 has the turning direction of the blade 10 of the first embodiment reverse (counterclockwise in FIG. 6), and is an elastic member. 6 and the pin 7 are always urged and contacted to the front end surface 5a side of the main shaft 5.

  Further, on the outer peripheral surface of the tip of the shank 3, the lock members 22a and 22b are fitted into the arc-shaped recesses 2b and 2c in a state where the flywheel members 20a and 20b are sandwiched between the two elastic members 19a and 19b. It is in a state.

  In such a state, when the main spindle 5 side is rotated in a fixed direction (for example, clockwise) from the stationary state of the holder main body 1 and the main spindle 5 to which the weight 11 connected via the clutch mechanism 2 is attached, When the holder body 1 to which the weight 11, which is connected via the main shaft 5, the shank 3 and the clutch mechanism 2, is attached, starts rotating at the same time, and the holder main body 1 starts rotating synchronously with the main shaft 5, the fly having a balance weight function. The other end side of the wheel members 20a, 20b pivots in the radial direction against the elastic force of the elastic members 19a, 19b with the pins 21a, 21b as fulcrums due to the inertial force in the rotational direction, and the other end side of the flywheel members 20a, 20b. The locking members 22a and 22b provided on the outer surface of the shank 3 are disengaged from the arcuate recesses 2c and 2d formed on the outer peripheral surface of the tip of the shank 3, and the clutch mechanism Become a state.

  However, the holder body 1 is in a state of being rotated by the rotational inertia force. At this time, when the main shaft 5 is braked and stopped by a known brake device 32 provided on the outer peripheral surface of the main shaft 5, the holder main body 1 is rotated by the rotational inertia force. The blade 10 of the cleaning blade mechanism 8 provided on the rear end surface of the rotating holder main body 1 is cleaned while being in contact with the front end surface 5a of the main shaft 5 for the time until the rotation of the holder main body 1 stops. .

  In other words, a plurality of spiral blades 10 come into contact with the front end surface 5a of the main shaft 5, rotate while scraping off dust, cutting oil, chips, etc. adhering to the front end surface 5a, and scraped off dust. Then, cutting oil and chips are discharged from the tip of the blade 10 to the outside.

  Then, the rotational speed of the holder main body 1 decreases, the flywheel members 20a and 20b rotate in the direction of sandwiching the shank 3 by the elastic force of the elastic members 19a and 19b, and the lock members 22a and 22b are the outer periphery of the tip of the shank 3. When fitted into the arc-shaped recesses 2c and 2d formed on the surface, the rotation of the holder body 1 is stopped and the cleaning operation is completed.

  FIG. 9 and FIG. 10 show the cleaning device according to the present invention applied to a conventionally used mechanical positioning device, which is a positioning device when the holder main body 1 is automatically changed by an automatic tool changing device. Then, a positioning pin 27 is inserted into the positioning block 26, and an engaging pin 30 attached in a perpendicular direction via a spring 28 and a slide block 29 is provided at the tip of the positioning pin 27.

  The front end of the engagement pin 30 can be engaged with an engagement groove 31 formed at the front end of the shank 3, and the engagement pin 30 and the engagement groove 31 formed at the front end of the shank 3 are engaged. In the state, it indicates that the holder body 1 is in a positioned state.

  During the cleaning operation, the above-described positioning state is removed, and the plurality of spiral blades 10 come into contact with the front end surface 5a of the main shaft 5 and adhere to the front end surface 5a by the same action as in the first embodiment. The dust, cutting oil, chips, and the like rotating while scraping off are scraped off, and the scraped scraps, cutting oil, chips are discharged from the tip of the blade 10 to the outside.

  As described above, particularly in the two-surface restraining method, dust such as cutting powder adhering to the front end surface side of the main shaft 5 can be reliably removed by the contact-type cleaning blade mechanism, and processing by biting of cutting powder or the like is possible. Troubles can be effectively prevented and productivity can be improved.

It is a vertical front view of the cleaning apparatus for enforcing the 1st cleaning method of this invention. It is a front view of the blade ring of a cleaning blade mechanism. It is an AA arrow top view of FIG. It is a BB arrow bottom view of FIG. It is a vertical front view of the cleaning apparatus for enforcing the 2nd cleaning method of this invention. FIG. 6 is a front view of a blade ring of the cleaning blade mechanism of FIG. 5. FIG. 6 is a plan view taken along the line CC of FIG. FIG. 6 is a bottom view taken along the line DD in FIG. 5. It is a vertical front view of the cleaning apparatus for enforcing the 3rd cleaning method of this invention. It is an EE arrow bottom view of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Holder main body 1a Concave part 2 Clutch mechanism 2a Concave part 2b Lock member 2c, 2d Concave part 3 Shank 4 Retraction clamp mechanism 3a Tapered shaft part 5 Main shaft 5a Front end surface 5b Tapered hole 6 Elastic member 7 Pin 8 Cleaning blade mechanism 9 Blade ring 10 Blade 11 Weight 12 Screw 13 Cylindrical member 14 Grip 14a, 14b Bearing member 13a Through hole 13b Elastic member 15 Positioning means 16 Positioning pin 17 Fixing bolt 19 Pin 19a, 19b Elastic member 20a, 20b Flywheel member 21a, 21b Pin 22a, 22b Lock Member 23 hole 23a elastic member 24 cap member 25 screw 26 positioning block 27 positioning pin 28 spring 29 slide block 30 engaging pin 31 engaging groove 32 brake device Place

Claims (6)

A cylindrical holder body (1) is detachably connected to a tapered hole (5b) provided in the rotatable spindle (5) via a shank (3) and a pull-in clamp mechanism (4), and the spindle ( Using the rotational drive of 5) and the rotation difference of the holder body (1) following this, cleaning is performed while the blade (10) of the cleaning blade mechanism (8 ) is in contact with the front end surface (5a) of the spindle (5). a cleaning method of,
In the stationary state where the main shaft (5) and the holder main body (1) provided with the weight (11) are connected via the clutch mechanism (2) , the main shaft (5) side is suddenly rotated and driven. the blade of the cleaning blade mechanism provided on the rear end surface of the holder body (1) which rotates with a delay from rotation (5) (8) (10), the rotation of the spindle rotation speed and the holder body (5) (1) A cleaning method in a tool mounting apparatus in which cleaning is performed while the blade (10) is in contact with the front end surface (5a) of the main shaft (5) until the speed rotates synchronously. The main shaft (5) and the holder main body (1) are driven to rotate in synchronization with each other, the rotation on the main shaft (5) side is suddenly stopped, and the clutch mechanism (2) is caused by the centrifugal force of the holder main body (1). The tool attachment according to claim 1, wherein the blade (10) is cleaned while contacting the front end surface (5a) of the main shaft (5) when the connection state is broken and the holder body (1) is rotated by inertial force. Cleaning method in the apparatus. A cylindrical holder body (1) is detachably connected to a tapered hole (5b) provided in the rotationally driven main shaft (5) via a shank (3) and a pull-in clamp mechanism (4), and the main shaft (5 ) And the rotation of the holder body (1) following the rotation drive, the cleaning blade mechanism (8) blade (10) is brought into contact with the front end surface (5a) of the spindle (5) for cleaning . A leaning method,
The holder body (1) is rotated through the clutch mechanism (2) provided with the weight (11) by the rotational drive of the main shaft (5) , and the clutch mechanism (2) is connected by the centrifugal force of the holder body (1). When the holder is cut, the rotation drive of the spindle (5) is suddenly stopped, and at that time, the cleaning blade provided on the rear end face of the holder body (1) during the time when the holder body (1) is rotated by inertial force. A cleaning method in a tool mounting apparatus in which the blade (10 ) of the mechanism (8) cleans the front end surface (5a) while contacting the front end surface (5a) of the main shaft (5) . The blade (10) according to claim 1, 2 or 3, wherein the blade (10) protrudes at a predetermined interval in a circumferential direction on a main shaft side end surface (5a) of a plurality of blade rings (9) of the cleaning blade mechanism (8). Cleaning method for a tool mounting apparatus. A tapered hole provided on the rotating drivable spindle (5) (5b), the clutch mechanism (2), pull shank a cylindrical holder body (1) with a (3) provided in the main shaft (5) side detachably connected through a clamping mechanism (4), wherein the spindle-side end face of the holder body (1) (5a), continuously through the elastic member (6) and pin (7), the front end of the main shaft (5) A detachable cleaning blade mechanism (8) having a blade (10) urged to the surface (5a) side is provided, and this cleaning blade mechanism (8) is predetermined in the circumferential direction around the main shaft (5). A plurality of blade rings (9) arranged spirally or radially at intervals of the rubber ring, and a rubber-like elastic material projecting from the front end surface (5a) of the main shaft of the blade rings (9) at a predetermined interval in the circumferential direction The plurality of blade rings (9) are composed of a main shaft of the holder body (1) via elastic members (6) and pins (7). Cleaning device in rack arrangement Mounting tool, characterized in that the stretchable supported on the end face (5a) side. A blade (10) protruded from a plurality of blade rings (9) spirally or radially arranged at predetermined intervals in the circumferential direction around the main shaft (5) of the cleaning blade mechanism (8) is a blade ring. The tool mounting according to claim 5 , wherein the tip end side of (9) is disposed so as to be positioned in the rotational direction or non-rotational direction of the main shaft (5) and is provided in the circumferential direction of the surface of the blade ring (9). Cleaning device in the device.

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