JP4995533B2 - Protective equipment removal equipment - Google Patents

Description

  The present invention relates to a protector demounting device for a protector for preventing a cutting blade of a tool from being broken when a tool is attached to a tool holder of a machine tool.

  For example, in a tool having a cutting blade at the tip such as a drill, as the processing technology becomes more precise and finer, the size of the tool has been reduced, and the cutting blade has a small diameter and is sharp. . This tool is attached to a tool holder by an operator's manual work, and further, the tool holder is attached to a machine tool and used for machining such as drilling.

  When the tool is attached, the cutting blade of the tool has a small diameter and is sharp. Therefore, even if the cutting blade is slightly touched, the tool may be broken, and the operator may be injured when the tool is broken. For this reason, only the skilled worker can perform the work for attaching the miniaturized tool in this manner, and this hinders the smooth progress of the work process.

Therefore, in order to prevent breakage of the cutting blade of the tool and injury due to the cutting blade, a cap-like protective device is attached to the cutting blade of the tool when the tool is exchanged or not used (for example, FIG. 1 of Patent Document 1). Since this protective tool prevents the cutting blade from being exposed, there is no fear of coming into contact with the cutting blade during the replacement operation or the like, and the cutting blade is prevented from being damaged and thereby injured.
JP-A-9-285932

  Since the protector shown in Patent Document 1 is attached by an operator's manual work, it is difficult to keep the protector perpendicular to the tool when the protector is attached to and detached from the tool. Therefore, the protective tool is likely to come into contact with the cutting blade, and the cutting blade may be broken at that time. In addition, when the breakage occurs, the operator may be injured on the fingertip or the like.

  Then, this invention makes it a subject to prevent an operator from being injured, without breaking the said cutting blade at the time of attachment and removal of the protective tool to the said tool.

  In order to solve the above-mentioned problems, the present invention inserts a shank of a tool into a hole of a fixing tool, raises a cutting blade, stands up vertically on a base of a protective equipment detachment device, and is coaxial with the tool. The protector is attached to the lower end of the vertically moving push rod, and the push rod is pushed downward to attach the protector to the tool.

  According to the present invention, the tool and the protector are provided in advance on the same axis, and the protector is simply pushed downward, so that the tool can be securely attached to the protector without breaking the cutting blade of the tool. And it can be fitted safely. Moreover, since this work does not require skill, the work can be smoothly advanced regardless of the skill level of the worker.

  The present invention relates to a protective tool detachment tool for detaching a protective tool for protecting a cutting blade of a tool of a machine tool, and a hole provided in a fixing tool with a shank of a tool whose one end is a cutting blade. The tool is vertically raised with the cutting blade up, the fixture is placed on the base, and is formed at the lower end of a vertically provided push rod that goes up and down coaxially with the tool. Attach a protector with a through hole into which the tool is inserted into the protector mounting hole, press the push rod downward, fit the tool into the through hole from the cutting blade side, and pull the push rod back upward. A configuration in which the tool is pulled out from the fixture while the tool is fitted in the through hole can be employed.

  When a clamping sleeve is provided in the protective equipment mounting hole and the protective equipment is attached via the clamping sleeve, the protective equipment is securely gripped by the clamping sleeve. In addition, the gripping is released by pushing the scissors provided on the clamping sleeve, and the protective device can be easily pulled out from the clamping sleeve.

  Push the push rod down to fit the tool inserted in the fixture into the through hole of the protector, and then pull the push rod upward to fix the tool in the state where the tool is fitted in the protector. The tool comes out of the tool. Furthermore, the tool to which the protective device is attached can be removed by releasing the clamping sleeve.

  The push rod is supported by a push rod support member, and the push rod support member and the pedestal are connected to each other via a slide rod provided in a vertical position.

  The slide bar may be a single round bar, but if the pedestal and the push bar support member rotate relatively around the axis of the slide bar, the push bar cannot be maintained coaxial with the tool. More preferably, the round bars are provided in parallel, or a bar whose horizontal cross section is not a circle is employed to suppress the relative rotation of the pedestal and the push-in bar support member and maintain the same axis.

  Further, the hole provided in the fixture is a through hole, and a shank of the tool is inserted from one end of the through hole, and a screw is screwed from the other end. The tip of the screw and the tip of the shank are opposed to each other. By bringing them into contact with each other, the depth of insertion of the shank into the fixture can be adjusted to a desired depth.

  The screw rotates when a hand touches the shank when the shank is inserted into the fixture, and the shank insertion depth may deviate from a desired depth. In order to prevent this shift, if the screw is provided with a lock and rotation of the screw is prevented by this lock, the shank insertion depth can be accurately maintained at a desired depth.

  For this lock, for example, a nut can be used. The nut is provided in advance in the screw, and when locking, the nut is screwed into the fixture, and the screw thread of the fixture and the screw The rotation of the screw is prevented by causing the mountain to mesh strongly with each other.

  When the screw of the fixture is locked at the desired position with the lock and the shank of the tool is inserted so as to contact the tip of the screw, the cutting blade of the tool protrudes from the fixture to protect the cutting blade. When the protector to be pushed is pushed in until the lower end of the protector comes into contact with the upper end of the fixture, the portion exposed when the tool is pulled out from the fixture becomes the fitting portion into the tool holder. That is, the fitting depth to the tool holder can be set to a desired depth depending on the position of the screw of the fixture.

  The fixture may be erected directly on the pedestal, but can be more stably erected by being fitted and supported on a fixture support base having a hole into which the fixture is fitted.

  The fixture support base is positioned at a predetermined position of the base. The predetermined position means a position where the tool inserted into the fixture supported by the fixture support base and the protector attached to the push bar are coaxial in the vertical direction. Several types of sizes and shapes are prepared, and the predetermined position differs depending on the fixture support used.

  Therefore, for example, for each fixture support base to be used, marking is performed on the above pedestal in the shape of the outer shape of the fixture support base, and the fixture support base is adjusted to match the marking corresponding to the fixture support base to be used. By arranging it at a predetermined position when it is arranged, the fixture support base can be installed without the position of the fixture support base being substantially deviated from the predetermined position.

  Here, as another example of the positioning, for each of the markings, by providing at least two positioning pieces projecting along the outer edge of the pedestal, and abutting the fixture support base on the positioning pieces, The positioning is performed more easily and accurately.

  Further, when the tool is fitted into the protector and the shank of the tool is pulled upward from the fixture, the fixture may be lifted together with the shank. Therefore, a locking piece for preventing the fixing tool from being lifted is provided in contact with the fixing tool, the locking piece is fixed to the locking piece support member, and the locking piece support member is further fixed. By fixing to the slide bar, lifting of the fixture is prevented when the shank is pulled out.

  An elastic body is interposed between the push rod and the push rod support member, and the pushing is performed by applying a downward external force to the push rod against the urging force of the elastic body. If the urging force is used, a downward external force only needs to be applied when the protector is fitted into the tool, and the operation becomes easy.

  The elastic body is simple in terms of structure and is preferably an inexpensive spring, but is not particularly limited as long as it has the same effect as the spring.

  Further, if a slit extending from the inner surface to the outer surface of the through hole formed in the protective device is formed in the protective device in the axial direction of the through hole, the tool has a diameter slightly larger than the diameter of the through hole. Forcibly inserted from the side of the cutting blade, the slit forming part expands to the diameter of the tool, and the tool is elastically tightened by the slit forming part. It is inserted.

  Further, from the side opposite to the side where the tool is fitted, the diameter of the through hole is expanded with a drill having a diameter larger than the diameter of the tool, and only the tool insertion port is expanded. If it is left as a tool abutting part, the tool is supported only by this tool abutting part. Otherwise, the protector and the tool do not abut. The length of the tool contact portion in the axial direction is preferably at least 2 mm so that the tool fitted in the protector does not wobble.

  In this way, if the through-hole is expanded with a drill having a diameter larger than the diameter of the tool, the thickness of the body of the protector decreases, so that when the tool is forcibly inserted into the protector, the slit forming portion It becomes easy to expand the diameter, and the insertion becomes easy. Even when the tool is inserted with the tool shaft slightly tilted with respect to the protector, the diameter of the through hole is increased, so that the tilted tool and the inner surface of the protector through hole Makes it easier to insert tools.

  The material of the protective device is not particularly limited as long as it has a strength that can reliably protect the cutting blade of the tool when a hand or the like comes into contact with it, but when this tool is fitted into the tool holder by shrink fitting. Since heat resistance is required, it is more preferable to use metal.

  When a tool is fitted into the tool holder by shrink fitting, a tool holder in which a hole for fitting the tool is formed is installed in the shrink fitting device, and the tool holder is heated to, for example, 400 to 500 ° C. Then, the tool shank is inserted into the hole of the tool holder whose diameter has been expanded by heating, the tool holder is cooled, the diameter of the hole whose diameter has been expanded by heating is reduced, and the tool shank is fastened and fixed securely.

  Alternatively, when a tool is attached to the tool holder by tightening a nut, for example, the tool holder is fixed on a dedicated base for fixing the tool holder, and the shank of the tool is inserted into the tool holder, Tighten the provided nut with a spanner to fix it.

  In either case, the cutting blade of the tool is protected by the protective tool and is not exposed. Therefore, when the tool is fixed to the tool holder, there is a low possibility that the cutting blade is broken or the operator is injured.

  In this way, after fixing the tool to the tool holder, the work of removing the protector that protects the tool from the tool is supported by the tool holder support base, and the tool holder support base is fixed to the tool holder support base. Installed at a predetermined position on the pedestal, abutting a locking piece that prevents the tool holder from being lifted upward, and pressing down the push-in bar to fit the protector into the protector mounting hole The push-in rod is pulled back upward, and the protective device is pulled out from the tool in a state where the tool is fitted in the tool holder.

  Here, when a clamping sleeve is provided in the mounting hole, a protector is fitted into the clamping sleeve by pushing down the push-in rod, and the clamping sleeve securely holds the protector. The tool can be pulled out more smoothly.

  In the installation of the tool holder at the predetermined position, by providing at least two positioning pieces projecting on the pedestal, and by locking the tool holder support base to the positioning pieces, it is easier and more accurate. The above positioning is performed.

  FIG. 1 and FIG. 2 show one embodiment of the present invention, and this protective device detachment apparatus A is composed of two round bars in which a base 1 and a push-in bar supporting member 2 are provided vertically. It connects via the slide rod 3 which becomes.

  Further, the push rod support member 2 is provided with a push rod 5 with a spring 4 interposed, and a hole is formed in the lower end of the push rod 5 and is protected via a clamping sleeve 6 fixed to the hole. A tool 7 is attached.

  The pedestal 1 is provided with a fixture support base 8, and a fixture 9 is fitted into a hole formed in the fixture support base 8, and a tool 10 is inserted into a through hole formed in the fixture 9. It is. The fixing tool support base 8 is provided with a locking piece 11 for locking the lift, and the locking piece 11 is fixed to the slide bar 3 via a locking piece support member 12.

  The fixture support base 8 is positioned at a predetermined position on the base 1 by two positioning pieces 13 provided on the base 1, and the coaxial of the protector 7 and the tool 10 is ensured at the predetermined position.

  As shown in FIG. 3, the fixture 9 supported by the fixture support base 8 includes a fixture main body 14, a ring portion 15, a screw 16, and a nut 17 that prevents rotation of the screw 16. A through hole into which the tool 10 can be inserted is formed in the fixture main body 14, the tool 10 is inserted from one side, and the screw 16 is screwed in from the other side. The tool 10 and the tip of the screw 16 are in contact with each other in the through hole. Yes. The distance d from the tip of the fixture main body to the contact portion is the insertion depth of the tool 10 into the tool holder.

  Further, since the rotation of the screw 16 is prevented by rotating the nut 17 until it abuts against the fixture main body 14, even if a hand hits the screw 16 during the operation, the screw 16 rotates and the screwing depth is reduced. There is no deviation.

  The fixture 9 is fitted into a hole formed in the fixture support base 8 and is stably supported.

  The protector 7 fitted into the tool 10 is made of stainless steel (SUS304), and as shown in FIG. 4, a through hole 18 having a diameter larger than the diameter of the tool 10 inserted into the central axis is formed. A tool abutting portion 19 having an axial length of 2 mm is formed in the mouth and grips the tool 10. Further, the protective device 7 is formed with slits 20 having an axial length of 20 mm every 90 degrees around the axis. By forming the slit 20, the diameter of the portion can be easily expanded, so that the tool 10 can be easily inserted.

  The procedure for mounting the protector 7 on the tool 10 using the protector detaching tool A will be described with reference to FIG. 5. First, the protector 7 is attached to the clamping sleeve 6 provided on the push rod 5. Then, the tool 10 is inserted into the fixture 9 ((a) in the figure), and then the push rod 5 is pushed against the urging force of the spring 4 so that the lower end of the protector 7 and the upper end of the fixture 9 are brought into contact. Further, the load on the push rod 5 is unloaded, and the push rod 5 is returned to the original position by the biasing force of the spring 4 (Fig. (C)).

  The pushing rod 5 is provided with a clamping sleeve 6, and by inserting a scissors provided on the clamping sleeve 6, the protective device 7 can be freely inserted into and removed from the clamping sleeve 6.

  Since the details of the procedure for attaching the protector 7 to the tool 10 have been described above, the description thereof will be omitted.

  When removing the protector 7 from the tool 10 fixed to the tool holder 21, the tool holder 21 is installed at a predetermined position of the base 1 using the tool holder support base 22 shown in FIG. The upward lifting of the tool holder 21 is locked, a downward force is applied to the push-in rod 5 and pushed in, and the protective device 7 is fitted into the clamping sleeve 6 provided on the push-in rod 5, The unloading is performed while being fitted in the clamping sleeve 6, and the protective device 7 is removed from the tool 10. Also during this extraction, the vertical axis of the clamping sleeve 6 provided on the push-in bar 5, the protector 7 and the tool 10 is secured in advance, and the push-in bar 5 is simply moved up and down. The tool 7 does not contact the cutting blade of the tool 10 and break the cutting blade.

The perspective view of the protective equipment removal | desorption apparatus in one Example The front view of the protective equipment removal | desorption apparatus in one Example (A) of the fixture in one Example is a perspective view, (b) is sectional drawing which shows a mode that it fitted in the fixture support stand. Sectional drawing of the protector in one Example Action | operation figure of the protective equipment removal | desorption apparatus in one Example In one Example, (a) which shows a mode that the tool holder was supported by the tool holder support stand is a top view, (b) is a side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Pushing rod support member 3 Slide rod 4 Elastic body 5 Pushing rod 7 Protective tool 8 Fixing tool support base 9 Fixing tool 10 Tool 11 Locking piece 13 Positioning piece 16 Screw 17 Lock (nut)
18 Through-hole 19 Tool contact portion 20 Slit 21 Tool holder 22 Tool holder support

Claims (13)

In the protective device detachment tool (A) for detaching the protective device (7) for protecting the cutting blade to the cutting blade of the tool (10) of the machine tool,
The shank of the tool (10) whose one end is a cutting blade is inserted into a hole provided in the fixture (9), the cutting blade of the tool (10) is erected vertically, and the fixture (9) Is installed on the pedestal (1), and the tool (10) is inserted into a protective device mounting hole formed at the lower end of a vertically provided push rod (5) that is coaxial with the tool (10). The protector (7) formed with (18) is attached, the push rod (5) is pushed downward, and the tool (10) is fitted into the through hole (18) from the cutting blade side, and the push rod (5) With the tool (10) fitted in the through hole (18) , the shank of the tool (10) is pulled out from the fixture (9), and the protective tool (7) is attached to the tool (10). A protective equipment detachment device characterized by being worn.   The push rod (5) is supported by a push rod support member (2), and the push rod support member (2) and the pedestal (1) are connected via a slide rod (3) provided vertically. The protective equipment demounting device according to claim 1, wherein:   The hole provided in the fixture (9) is a through hole, and a screw (16) is screwed coaxially from the side opposite to the insertion side of the shank of the through hole, and the tip of the screw (16) and the above The protector demounting device according to claim 1 or 2, wherein the insertion depth of the shank is adjusted by bringing the tip of the shank into contact with each other. The protector demounting device according to claim 3 , wherein a lock (17) for preventing the rotation of the screw (16) is provided on the fixture (9).   The pushing rod (5) is pushed in until the upper end of the fixture (9) and the lower end of the protector (7) come into contact with each other, thereby exposing the shank from the protector (7). The protective equipment demounting device according to any one of claims 1 to 4, wherein the length is equal to the insertion depth.   The fixture (9) is supported by a fixture support base (8), and the fixture support base (8) is positioned at a predetermined position of the base (1). To 5. The protective equipment demounting device according to any one of 5 to 5.   7. The protective equipment detachment according to claim 6, wherein the positioning is performed by locking the fixture support base (8) to a positioning piece (13) provided on the pedestal (1). Instruments. The protective equipment detachment device according to claim 2 , wherein a locking piece (11) is provided on the slide bar (3) to prevent the fixture (9) from moving upward. An elastic body (4) is interposed between the push bar (5) and the push bar support member (2), and the push bar resists the urging force of the elastic body (4) and the push bar (5). 9. The protective equipment demounting device according to claim 2 or 8 , wherein the device is made by applying a downward external force to the device, and the pulling back is made by the biasing force.   A slit (20) from the inner surface to the outer surface of the through hole (18) formed in the protective device (7) is formed in the protective device (7) in the axial direction of the through hole (18), and the protective device The protective tool according to any one of claims 1 to 9, wherein the tool (10) is fitted by a restoring force when the slit (20) forming portion of the tool (7) is forcibly expanded in diameter. Detachable device.   The protector (7) is provided with a tool abutting portion (19), the tool (10) is supported only by the tool abutting portion (19), and the protector (7) is provided except for the tool abutting portion (19). The protector demounting device according to claim 1, wherein the tool and the tool are not in contact with each other.   12. The protective equipment demounting device according to claim 1, wherein the protective equipment (7) is made of metal. In the step of removing the protector (7) for protecting the tool (10) from the tool (10) fitted in the tool holder (21), the tool holder (22) supported by the tool holder support (22) 21) is vertically installed at a predetermined position of the pedestal (1), the locking piece (11) prevents the tool holder (21) from being lifted upward, and the push rod (5) is moved downward. Press down to fit the protector (7) into the protector mounting hole, pull back the push-in rod (5) upward, and keep the tool (10) fitted in the tool holder (21). The protective equipment demounting device according to claim 8 , wherein 7) is pulled out from the tool (10).

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