JPH0429965Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutting oil recovery device for a machine tool. More specifically, the present invention relates to a cutting oil recovery device for efficiently recovering cutting oil spouted from the tip of a drill.

[Prior Art] After the cutting oil during cutting is collected, it is separated into chips and cutting oil and reused. When drilling a hole using a drill with an oil hole, the hole is drilled while pressurized cutting oil is jetted out from the tip of the drill. This is because the flank and rake surfaces of the cutting edge of the drill are effectively lubricated to improve sharpness, cool, and actively discharge chips. However, since the cutting oil is gushing out from the tip of the drill, when the drill bits into the workpiece, the cutting oil collides with the workpiece and scatters along with chips, and when the hole drilling is completed, the cutting oil hits the workpiece. The cutting oil that is ejected during penetration is scattered outside the machine tool body.

The scattered cutting oil pollutes the inside of the factory and wastes the cutting oil. For this reason, various measures have been taken, such as providing a cover to prevent cutting oil from scattering.

[Problems to be solved by the invention] Merely providing a cover does not effectively collect the cutting oil that is vigorously jetted out from the tip of the drill. In particular, it is difficult to provide a cover to prevent the cutting oil from scattering when the drill cuts into the workpiece, and to efficiently collect the cutting oil that is ejected when the drill penetrates the workpiece without scattering it outside the machine body. Even if the machined parts were completely shielded with a fuselage cover, the cover would be large-scale and complicated. Furthermore, when continuous workpiece conveyance devices for conveying workpieces are connected, such as in a transfer machine, it is difficult to cover only each machine tool. The present invention has been devised to address these problems and for the following purposes.

An object of the present invention is to provide a cutting oil recovery device that efficiently recovers cutting oil spouted from a drill with an oil hole without providing a body cover.

Another object of the present invention is to provide a cutting oil recovery device for preventing cutting oil from scattering at the machining start point and machining end point of a drill with an oil hole.

[Means for Solving the Problems] The present invention adopts the following means for solving the above problems.

a. A tool that is attached to the machine tool 1 and has a cutting blade at the tip for machining holes by moving relative to the workpiece W in the axial direction, and has an oil hole for machining by jetting cutting oil from this cutting blade. A cutting oil recovery device 2 for a gun drill, which is provided so as to be pressed in the axial direction of the gun drill 21 and come into contact with one end of the workpiece W, and has a drill support hole 42 through which the gun drill 21 passes. c) a tip pocket 95 that communicates with the drill support hole 42 and is provided for collecting cutting oil and chips on the cutting side of the gun drill 21, and forms a space isolated from the outside; A hole is provided at a position facing the contact ring 44 across the workpiece W so as to be pressed in the axial direction of the gun drill 21 and abut against the other end of the workpiece W, and is the same as the drill support hole 42. a drill receiver 50 having a receiving hole 58 formed on its axis into which the gun drill 21 can be inserted; cutting oil discharge pipes 51, 60 provided to collect cutting oil and chips when penetrating the workpiece W, and having a space cut off from the outside; f from the cutting oil discharge pipes 51, 60; This is a cutting oil recovery device for a gun drill with an oil hole, characterized in that it consists of recovery means 61, 62 fixedly provided to recover the discharged cutting oil and chips, and g.

[Operation] Rotates the drill with oil hole. The contact ring is pressed against the workpiece, a drill with an oil hole is inserted into the contact ring, and cutting oil is jetted from the tip of the drill to drill the hole.
When the hole drilling is completed, the tip of the drill with an oil hole passes through the workpiece and the tip is received by the drill holder. The drill receiver collects cutting oil and chips spouted from the tip of the drill with an oil hole.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. Figure 1 shows a hole machining machine tool 1 of a transfer machine equipped with a cutting oil recovery device 2 of the present invention.
FIG. FIG. 2 is a plan view of FIG. 1. The machine tool 1 is a machine tool that constitutes a part of a transfer machine. In the machine tool 1, machine tools that perform the same type of processing or different types of processing are arranged in series or in a ring shape. The workpiece W is processed by being fed intermittently or continuously between these machine tools 1 by the engagement claw 91 (FIG. 5) of the transfer bar 90. These mechanisms are well-known techniques and will not be described in detail.

The base 3 that constitutes the machine tool 1 is a fixed object installed on the floor of a factory. On base 3,
A column 4 is fixedly provided so as not to be movable in the vertical direction. A sliding guide surface 5 is provided on the side surface of the column 4 in the longitudinal direction of the column 4, that is, in the Y-axis direction. A saddle 10 is provided on the slide guide surface 5 so as to be slidable in the Y-axis direction. Y of saddle 10
The axial movement is driven and position controlled by a Y-axis servo motor 11 via a feed screw (not shown).

A main shaft head 12 is provided on the saddle 10 so as to be slidable in a direction perpendicular to the Y-axis direction, that is, in a Z-axis direction. The spindle head 12 is driven in the Z-axis direction on the saddle 10 by a Z-axis servo motor 13 via a feed screw (not shown), and its position is controlled. Four tool spindles 14 are rotatably supported on the spindle head 12 by bearings.
A pulley 15 is keyed to the rear end of each of the tool spindles 14. A V-belt 16 is stretched between each pulley 15 and a pulley 17.

The pulley 17 is keyed to the shaft of the main shaft motor 18. The rotation of the main shaft motor 18 is controlled by the pulley 17, the V-belt 16, and the pulley 15.
The main shaft 14 of the book is simultaneously driven to rotate. On the other hand, a gun drill 21 is gripped and fixed to the front end of the tool spindle 14 via a tool chuck 20 (FIG. 3).
The saddle 10 is provided with a carry-in jig 30 that moves in the Z-axis direction similarly to the spindle head 12. The movements of the carry-in jig 30 and the saddle 10 are linked by an interlocking mechanism (not shown) of pneumatic cylinders, and when the saddle 10 moves, the carry-in jig 30 also moves at the same time.

The carry-in jig 30 is provided with a center rest 31 that supports the gun drill 21 and is rotatable coaxially with the tool main shaft 14. The outer ring of the ball bearing 32 is fitted into the bearing support hole 33 of the carry-in jig 30 and fixed. A drill support member 34 is fixed to the inner ring of the ball bearing 32 with bolts. At the center of the drill support member 34 is a gun drill 2.
1 is provided with a drilled bearing hole 35 for bearing through it. The drill support hole 35 is the gun drill 21
It is the same axis as the center axis of rotation.

Furthermore, a center rest 40 is provided on the workpiece W side of the carry-in jig 30. Center rest 40 is
This is a part that supports the tip of the gun drill 21 and serves as a shield to prevent cutting oil from scattering. The center rest 40 has a support member 41 as shown in FIG.
is fixedly provided. Since the support member 41 receives and supports the gun drill 21,
A steel material such as ordinary alloy tool steel is used. A drill support hole 42 having a diameter slightly larger than the outer diameter of the gun drill 21 is bored in the center of the support member 41 .

The axis of the drill support hole 42 and the center rest 31
It is arranged on the same axis as the axis of the drill support hole 35. A small diameter portion 43 having a small diameter is formed at the tip of the support member 41 . This small diameter portion 43
is fitted with a gap so that the contact ring 44 that contacts the workpiece W can move slightly in the Z-axis direction. However, when moving to the workpiece W side, stopper 4
It can be stopped at 5. An O-ring 46 made of rubber is interposed between the contact ring 44 and the support member 41.

The O-ring 46 constantly pushes the contact ring 44 in the Z-axis direction due to its elasticity. A drill receiver 50 (FIG. 3) for receiving the gun drill 21 and collecting cutting oil is provided on the same axis at the tip of the gun drill 21 with the workpiece W in between. Drill receiver 5
0 is fixed to a cutting oil discharge pipe 51 provided in the Y-axis direction. The inside of the drill receiver 50 is formed into a cavity so that cutting oil can be discharged.

In FIG. 1, the upper end of the cutting oil discharge pipe 51 is
One end of the crossbeam 52 is fixed. The crossbeam 52 slides freely on a guide member 53 on the saddle 10 in the Z-axis direction. The other end of the crossbeam 52 is connected to the cylinder 5
It is fixed to one end of the piston rod 54 of No. 5. Cylinder 55 is fixed on saddle 10. When the cylinder 55 is driven, the cross beam 52 and the cutting oil discharge pipe 51 move, and the drill receiver 50 is pressed against the workpiece W.

The drill receiver 50 includes a receiving member 55 having a tapered tip, a holding member 56 that holds the receiving member 55,
It consists of a receiving member main body 57 to which a holding member 56 is fixed. The receiving member main body 57 is fixed to the cutting oil discharge pipe 51. A receiving hole 58 having approximately the same diameter as the gun drill 21 is formed in the center of the receiving member 55 . A discharge hole 59 for discharging cutting oil is formed in the holding member 56 coaxial with the receiving hole 58, and this discharge hole 59 communicates with the cutting oil discharge pipe 51.

One end of an L-shaped pipe 60 (FIG. 5) is fixed to the lower end of the cutting oil discharge pipe 51. The other end of the L-shaped tube 60 is open and inserted into the top of the open funnel 61. The cutting oil collected in the funnel 61 is returned to the cutting oil supply device (not shown) through the discharge pipe 62, filtered and cleaned, and reused. The L-shaped pipe 60 connected to the cutting oil discharge pipe 51 has a funnel 61
move within. This movement is within the same range as the movement range of the tool spindle 14. Therefore, the size of the upper opening of the funnel 61 is also the same as the movement range of the tool spindle 14.

An X-axis guide surface 70 (FIGS. 1 and 2), which is a sliding surface, is provided on the front upper surface of the base 3. X
A table 71 is slidably provided on the shaft guide surface 70. The table 71 is positioned and driven by an X-axis servo motor 72 via a feed screw 73 on the X-axis guide surface. An index table base 72 is mounted and fixed on the table 71.
An indexing clamp member 75 is provided on the index table 72 so as to perform indexing and clamping operations in the Y-axis direction.

The indexing clamp member 75 can be indexed around the Y axis by an index cylinder 74.
A pallet 76 is placed on the indexing clamp member 75 and fixed to the index table 72. A vertical tombstone device 80 is fixed on the pallet 76. A support shaft 81 is provided at the upper end of the tombstone device 80. Tombstone device 80
, four workpieces W are fixed in the vertical direction corresponding to the tool spindle 14.

On the other hand, a sub-clamper 6 is provided on the table 71. The sub clamper 6 is a tombstone device 8
0 on the index table 72. A support 85 is provided on the table 71 in an upright manner. At the upper ends of both pillars 85, 85,
A beam 86 spans it. A cylinder 87 is mounted on the beam 86. An engagement shaft 88 is fixed to the piston rod of the cylinder 87. When the cylinder 87 is driven to drive the piston rod, the engagement shaft 88 is actuated to engage the support shaft 81 and clamp the tombstone device 80. Since the tombstone device 80 is tall in the vertical direction, it is clamped from above to prevent deformation during processing.

Activate the transfer arbor 90 to transfer the pallet 7.
6 all at once with the engaging claws 91 (FIG. 5).
The pallet 76 is placed on the clamp material 75 on the table 70 of the machine tool 1 for the next process. Clamping member 75 is actuated to clamp pallet 76 onto indexing table 72. The cylinder 87 is operated and the engagement shaft 88 is inserted into and engaged with the support 81 of the tombstone device 80, and the tombstone device 80 is moved to the table 71.
Clamp on top. The main shaft motor 18 operates,
The pulley 17 and the pulley 15 are rotationally driven, and the tool main shaft 14 is rotationally driven. The rotation of the tool spindle 14 is controlled by the gun drill 21 via the tool chuck 20.
drive the rotation.

The Z-axis servo motor 13 is rotationally driven to move the spindle head 12 in the Z-axis direction via the feed screw. The movement of the spindle head 12 simultaneously moves the carry-in jig 30 in the Z-axis direction, that is, in the direction of the workpiece W. The contact ring 44 of the center rest 40 hits the workpiece W. Since the workpiece W does not move even if it collides, the abutment ring 44 retreats and the O-ring 4
Compress 6. However, when the pressure exceeds a predetermined value, the carry-in jig 30 does not move any further and only the spindle head 12 moves. That is, the cylinder connected between the carry-in jig 30 and the spindle head 12 is compressed.

The piston rod 54 of the cylinder 55 operates to move the crossbeam 2 and press the cutting oil discharge pipe 51 against the workpiece W side. The receiving member 55 of the drill receiver 50 is pressed against the workpiece W. In this state,
Cutting oil is supplied from the tip of the gun drill 21 at high pressure. The tip of the gun drill 21 hits the workpiece W and starts cutting. The cutting oil supplied at high pressure is pressed against the workpiece W by the contact ring 44, and the cutting oil is pressed against the workpiece W by the contact ring 44.
Since it is completely sealed by the ring 46, there will be no leakage.

The processed chips are discharged through the chip pocket 95 of the gun drill 21 or the space of the workpiece W together with cutting oil. When the hole drilling in the workpiece W is completed, cutting oil and chips are ejected in front of the gun drill 21 and received in the receiving hole 58. The cutting oil enters the discharge hole 59 and flows into the cutting oil discharge pipe 51. The cutting oil flowing out from the cutting oil discharge pipe 51 enters the funnel 61 from the L-shaped pipe 60 and is discharged from the discharge pipe 62.

When the above steps are completed, the operation is reversed to return to the original state and the machining is completed. Tombstone device 80
When machining another surface, the pallet 76 is driven by the index cylinder 74 to index the other surface and perform hole machining in the same manner as described above.

[Other Embodiments] Although the embodiment described above is a cutting oil recovery device for a drill with an oil hole, there is no need to limit the invention to this. Any other rotating tool with an oil hole, such as a boring tool, reamer, or tap, will suffice. Furthermore, although the cutting oil is ejected from the tip of the cutting blade in the above embodiment, the present invention can be similarly applied to ejecting the cutting oil from the side surface of the tool.

[Effects of the invention] As described in detail above, in the cutting oil recovery device of the gun drill with oil hole of the present invention, after the gun drill penetrates the workpiece, it is inserted into the drill receiver and the cutting oil and chips are collected in the cutting oil discharge pipe. and can be recovered via a recovery means.

For this reason, disc-shaped residual materials that are created when the gun drill is drilled can be smoothly discharged.
Hole machining efficiency can be improved without clogging.

Furthermore, since chips do not flow back into the workpiece after the gun drill penetrates, the machined hole in the workpiece is not scratched or clogged.

[Brief explanation of drawings]

Figure 1 is a side view of a machine tool to which the cutting oil recovery device of the present invention is applied, Figure 2 is a plan view of Figure 1, and Figure 3 is a side view of a machine tool to which the cutting oil recovery device of the invention is applied.
The figure is a cross-sectional view of the carry-in jig and drill holder, and Figure 4 is the 3rd
FIG. 5 is a partially enlarged view of the part shown in the figure, and a cross-sectional view showing the cutting oil discharge section. 1... Machine tool, 2... Cutting oil recovery device, 3...
... Base, 6 ... Sub clamper, 10 ... Saddle, 11 ... Y-axis servo motor, 12 ... Spindle head, 14 ... Tool spindle, 20 ... Tool chuck, 21 ... Gun drill, 30 ... Carry-in jig Ingredients, 3
1, 40...center rest, 46...O ring,
50... Drill receiver, 51... Cutting oil drain pipe, 61...
…funnel.

Claims (1)

[Claims for Utility Model Registration] a. It is attached to the machine tool 1 and has a cutting blade at its tip for machining holes by moving relative to the workpiece W in the axial direction, and it drains cutting oil from this cutting blade. A cutting oil recovery device 2 for a gun drill with an oil hole for machining by spouting out oil, comprising: (b) installed so as to be pressed in the axial direction of the gun drill 21 and come into contact with one end of the workpiece W, and to allow the gun drill 21 to pass through the cutting oil recovery device 2; a contact ring 44 in which a drill support hole 42 is formed; c. a space that communicates with the drill support hole 42 and is provided for collecting cutting oil and chips on the cutting side of the gun drill 21 and is isolated from the outside; a tip pocket 95 having the following structure; and a drill receiver 50 in which a receiving hole 58 into which the gun drill 21 can be inserted is formed on the same axis as the drill supporting hole 42; Cutting oil discharge pipes 51 and 60 that communicate with each other and are provided to collect cutting oil and chips when the gun drill 21 penetrates the workpiece W, and have a space cut off from the outside. A cutting oil recovery device for a gun drill with an oil hole, characterized in that it consists of recovery means 61, 62 fixedly provided to recover the cutting oil and chips discharged from the cutting oil discharge pipes 51, 60, and g. It is.