KR101357507B1 - Deep hole machining method and deep hole machining device - Google Patents

Abstract

When a tool abnormality detection step (ST 13) for detecting an abnormality of the gun drill is detected, a loss judgment process (ST 16) for determining whether the gun drill is broken when the abnormality of the gun drill is detected, and when it is determined that the gun drill is not broken In the deep hole machining process that continues the deep hole machining at the suspension position, and when it is determined that the gun drill is broken, the tool drill on the spindle is replaced with a new gun drill, and the deep hole machining at the suspension position is performed. The cutting processing process (ST17, 18) which writes the information which is a drill break in the cutting processing list, and the list output process which outputs a cutting processing list when deep-hole processing in all processing positions are complete | finished.

Description

Deep hole processing method and deep hole processing device {DEEP HOLE MACHINING METHOD AND DEEP HOLE MACHINING DEVICE}

The present invention relates to a deep hole processing method and a deep hole processing apparatus. In detail, the present invention relates to a deep hole processing method and a deep hole processing apparatus which continuously perform deep hole processing at a plurality of processing positions of a workpiece in a processing apparatus in which a gun drill is mounted on a main shaft.

Usually, in order to maintain the mold temperature at the temperature according to a molding process, the metal mold | die is formed with the hole | hole, ie, a temperature control fluid flow path, which distributes a temperature control fluid in a metal mold | die. In particular, in the case of a mold for molding a large injection molded article such as an automobile part, a long (deep) temperature control fluid flow path is formed.

Background Art Conventionally, a machine tool for processing a deep hole (deep hole) in a mold, wherein a gun drill for deep hole machining is mounted on a main shaft, and a high pressure cutting oil is passed through a cutting oil flow path that passes through the inside of the main shaft to the tip of the gun drill. The deep hole processing apparatus which processes a deep hole in a metal mold | die while supplying the cutting chip cut out from the cutting chip groove formed in the outer periphery of the gun drill provided with the cutting chip is proposed (Document 1: Japanese Patent Application Laid-Open No. 2008-213064). Publication).

By the way, in the deep hole processing using a gun drill, the deeper the hole, the smaller the effect of discharging the cutting chip and the longer the total length of the drill. Therefore, clogging of the cutting chip and damage to the drill are often seen on the way.

For this reason, conventionally, when a plurality of deep holes are to be continuously processed on a work, the worker monitors the condition of the gun drill broken, for example, when a worker checks the break of the gun drill while machining a certain deep hole, The machining was stopped, the new gun drill was mounted on the spindle, and the next deep hole machining was carried out. That is, the deep hole which stopped processing was incomplete, and moved to the next deep hole processing, and was working. This is because a part of the broken core drill remains in the drilled hole, and various situations are difficult to cope, so that the procedure for proceeding to the next deep hole processing is taken. In addition, about the deep hole interrupted by cutting, an operator performs correction by hand later.

In such a work method, since the operator must always monitor the breakage state of the gun drill, a system for saving energy is required.

Therefore, for example, it is considered to apply the apparatus described in Document 2 (Japanese Patent Application Laid-open No. Hei 11-170105) to deep hole processing. In other words, if the wear or tear of the tool is detected and the machine stops or changes the tool, the device is applied to deep hole machining. When the wear or tear of the tool is detected, the machining stops or the tool change is performed. do.

However, even when a tool is worn out or broken, even if a machining stop or tool change is performed, it is difficult to check which deep hole is the hole where the tool was broken, even if a lot of deep hole machining is performed. In this case, you must find the deep hole of the tool breakage.

Therefore, after performing deep hole processing, when performing screw hole processing (tab processing) for screwing a stopper member to the edge part of this deep hole, screw hole processing cannot continue automatically after deep hole processing.

Document 1: Japanese Patent Application Publication No. 2008-213064 Document 2: Japanese Patent Application Laid-open No. Hei 11-170105

SUMMARY OF THE INVENTION An object of the present invention is to provide a deep hole processing method and a deep hole processing apparatus which can solve such a conventional problem and immediately identify a deep hole which has been broken after processing all the deep holes while processing all the deep holes continuously.

The deep hole processing method of the present invention is a processing device in which a gun drill is attached to a main shaft, and in a deep hole processing method of continuously performing deep hole processing at a plurality of processing positions of a workpiece, a tool abnormality detection step of detecting an abnormality of the gun drill; When the abnormality of the gun drill is detected, the cutting position when the rotation of the main shaft is stopped to determine whether the gun drill is broken, and when it is determined that the gun drill is not damaged in the loss judgment step, the suspension position When it is determined that the gun drill is broken in the deep hole machining continuation process and the loss determination process, the tool is replaced with a new gun drill while the tool drill is mounted at the suspension position. Information on the fact that the deep hole machining is a gun drill break is entered in the loss list, and the deep hole at the next machining position is When the breakage process to run a ball, a deep hole machining in all machining positions have been completed, it characterized in that it comprises a list output step of outputting the processed list breakage.

According to such a structure, a deep drill is performed continuously in the multiple machining position of a workpiece | work with the gun drill attached to the main shaft. During this processing, when an abnormality of the gun drill is detected, it is determined whether the detected abnormality of the gun drill is a gun drill breakage.

Here, if it is determined that the gun drill is broken, the gun drill mounted on the main shaft is tool exchanged with a new gun drill. Further, the information that the deep hole machining at the suspension machining position is a gun drill breaking is written in the breaking list. In this manner, when the deep hole machining at all the machining positions is completed, the cut list is output.

Therefore, the deep hole can be continuously processed at the plural machining positions of the workpiece, and when the deep hole machining at all the machining positions is completed, a cut list is output, so that the broken hole can be immediately identified. Therefore, since the deep hole which cut | disconnected does not need to be found and the post process (for example, tap process) can also be performed continuously, efficient deep hole processing can be realized as a whole.

In the deep hole processing method of the present invention, it is preferable that the present machining condition data is also written in the cut processing list as information indicating that the gun drill is broken in the cut processing step.

According to such a configuration, in the cutting processing step, the current machining condition data is also written in the cutting list as information indicating that the gun drill is broken, so that the cut list is output when the deep hole machining at all processing positions is completed. In this case, the machining condition data at the machining position where the damage occurred, for example, the rotational speed and the feed speed of the main shaft can also be known. Therefore, by adding these processing condition data, the optimum processing conditions can be set at each processing position.

In the deep hole machining method of the present invention, a deep hole in which the gun drill is broken is referred to with respect to the deep hole to which tapping is commanded among the deep holes to be processed at the plural machining positions, with reference to the cut machining list output in the list output process. It is preferable to provide the tapping process of skipping and performing a tapping process.

According to such a structure, since the deep hole which performs a tap process can skip a deep hole made by the gun drill cutting while referring to the output cut list, an unnecessary tap process can be eliminated.

In the deep hole processing apparatus of the present invention, a table on which the workpiece is loaded, a main shaft on which a gun drill for deep hole machining is mounted, a relative moving means for relatively moving the table and the main shaft, and the gun drill Tool abnormality detecting means for detecting an abnormality, tool length measuring means for measuring the length of the gun drill, and control means for continuously performing deep hole machining at a plurality of machining positions of the workpiece while controlling the main shaft and the relative moving means. The control means stops the rotation of the main shaft when the abnormality of the gun drill is detected by the tool abnormality detecting means, and measures the length dimension of the gun drill by the tool length measuring means. The number of breakage judgments determined as gun drill breakage when the measurement length is shorter than the prescribed dimension compared to the preset initial length. And deep hole processing continuity means for continuing deep hole machining at the current machining position when it is determined that the gun drill is not damaged by the damage determination means, and when it is determined that the gun drill is broken by the damage determination means. The tool drill on the spindle is replaced with a new gun drill, and the information on the fact that the deep hole machining at the cutting position is the key drill breakdown is entered in the cut list, and the deep hole machining is performed at the next machining position. It is characterized by including a cutting processing means and a list output means for outputting the cutting list when deep hole processing at all processing positions is completed.

According to such a structure, the same effect as the above-mentioned deep hole processing method can be expected.

In the deep hole processing apparatus of the present invention, a plurality of gun drills and tabs are provided, and have an automatic tool changer that is capable of tool change between them and the spindle, and the control means controls the automatic tool changer, After attaching the tab instead of the mounted gun drill, for the deep hole in which the tapping is commanded among the deep holes to be processed at the plural machining positions, the deep hole with the gun drill cutting is skipped, referring to the cut list. It is preferable to have tab processing means for executing the processing.

According to such a configuration, after the deep hole machining is continuously performed at a plurality of machining positions of the workpiece with the gun drill attached to the main shaft, a tab is mounted in place of the gun drill attached to the main shaft, and the output is cut by this tab. Since the tapping is performed while skipping the deep hole with the gun drill cut while referring to the list, it is possible to continuously execute the deep hole processing to the tapping.

According to the present invention, it is possible to provide a deep hole processing method and a deep hole processing apparatus capable of immediately identifying a broken hole after finishing processing of all the deep holes while continuously processing all the deep holes.

BRIEF DESCRIPTION OF THE DRAWINGS It is sectional drawing which shows the workpiece processed by the deep hole processing apparatus which concerns on embodiment of this invention.
2 is a front view illustrating a main body structure of the deep hole processing apparatus of the above embodiment.
3 is a block diagram showing a control device of the deep hole processing device according to the embodiment;
4A to 4D are views showing a process of processing the temperature control fluid flow path of the work.
5 is a view for explaining the contents of the deep hole machining program of the workpiece.
6 is a flowchart showing a procedure of deep hole processing.
Fig. 7 is a flowchart showing a tool abnormality interrupt monitoring routine at the deep hole machining.
Fig. 8 is a diagram showing a cut list that is output after the deep hole finish.
9 is a diagram illustrating a modification of the above embodiment.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

<Walk (see FIG. 1)>

1: is sectional drawing of the workpiece | work W processed by this embodiment. The workpiece | work W is the metal mold | die which formed the cavity of illustration not shown in the surface, and the temperature control fluid flow path 1 which distributes the temperature-regulated fluid (temperature control fluid) inside is formed. The temperature control fluid passage 1 is constituted by a plurality of deep holes 2 formed to intersect longitudinally and horizontally. The female screw 3 is processed in the required part of the deep hole 2, and the stopper member 4 is screwed to this female screw 3. Thereby, the temperature control fluid flow path 1 for flowing a temperature control fluid is formed in the inside of a metal mold | die.

<Main body configuration of deep hole processing apparatus (refer FIG. 2)>

FIG. 2: is a front view which shows the main body structure of the deep hole processing apparatus which processes the temperature control fluid flow path 1 to the workpiece | work W of FIG.

The main constitution of the deep hole processing apparatus includes a bed 11, a table 12 mounted on one side of the upper surface of the bed 11 in a forward and backward direction (X-axis direction), and having a work W loaded thereon, and a bed. Saddle 13 installed on the other side of the upper surface of the (11) so as to be movable in the left-right direction (Z-axis direction), the column 14 installed on the upper surface of the saddle 13, and the vertical direction along the column 14 A main shaft head 15 provided so as to be able to move up and down in the Y-axis direction, a main shaft 17 rotatable to the main spindle head 15 and driven to rotate by the main shaft motor M 16, and the main shaft ( A gun drill 20, an automatic tool changer 21, and a tool length measuring device 22, which are attached to 17 and perform deep hole processing on the workpiece W, are provided.

17 A of cutting oil flow paths are penetrated by the main shaft 17 from the base end to the front-end | tip along the inner axial direction. The cutting oil pump P 24 is connected to the cutting oil distribution path 17A for feeding the high-pressure cutting oil through the pipe 23.

The gun drill 20 has a length longer than that of a conventional drill, for example, about 500 mm to 1000 mm in length, and has a cutting chip discharge groove formed in a spiral shape on an outer circumferential surface thereof, and a cutting oil flow path through which cutting oil passes inside. 20A penetrates from the proximal end to the distal end. Therefore, when the gun drill 20 is mounted on the spindle 17, the high-pressure cutting oil pressurized by the coolant pump 24 passes through the spindle oil 17 and the cutting oil flow paths 17A and 20A of the gun drill 20. It is supposed to be supplied from the tip of the drill 20.

The automatic tool changer 21 stores a plurality of gun drills 20 or tabs (not shown), and tool-changes any one of the selected gun drills 20 or tabs with respect to the spindle 17.

The tool length measuring device 22 is used to determine whether an abnormality of the gun drill 20 is worn or broken when an abnormality of the gun drill 20 is detected, and the length of the gun drill 20 is measured. With functions. Specifically, 22 A of detection parts which contact the tip of the gun drill 20 are provided, and when a tip of the gun drill 20 contacts the detection part 22A, a contact signal is issued. Upon receiving this, the NC device 31 described later obtains the Z-axis coordinate value of the saddle 13 and obtains the length (measured length) of the gun drill 20 from this Z-axis coordinate value.

<Control device of deep hole processing apparatus (refer to FIG. 3)>

3 is a block diagram showing the NC device 31 of the deep hole processing apparatus, a mechanism connected thereto, and the like.

The NC device 31 includes an X-axis drive mechanism 32 for moving the table 12 in the X-axis direction, a Y-axis drive mechanism 33 for moving the spindle head 15 in the Y-axis direction, and a saddle 13. Z-axis drive mechanism 34 for moving in the Z-axis direction, drive circuit 35 for driving the spindle motor 16, current detector 36 as tool abnormality detection means for detecting abnormality of the gun drill 20, and automatic In addition to the tool changer 21, the tool length measuring device 22 as the tool length measuring means and the coolant pump 24, the input device 41, the display 42 as a output means, the printer 43, the program memory 44 The working memory 45 and the like are connected.

Here, the X-axis drive mechanism 32 for moving the table 12 in the X-axis direction, the Y-axis drive mechanism 33 and the saddle 13 for moving the spindle head 15 in the Y-axis direction are moved in the Z-axis direction. By the Z-axis drive mechanism 34 to move, the relative movement means which relatively moves the table 12 and the main shaft 17 in a three-dimensional direction is comprised. In addition, although these X-axis drive mechanism 32, the Y-axis drive mechanism 33, and the Z-axis drive mechanism 34 are comprised by the feed screw mechanism, a linear motor mechanism etc. may be sufficient.

The program memory 44 stores various processing programs for processing the temperature control fluid flow path 1 on the work W shown in FIG. 1.

The work memory 45 is provided with a work area for use in executing the machining program, and a cut list storage area for storing a cut list in which information when the gun drill 20 is damaged during machining is written. 46 is formed.

The NC device 31 controls the main shaft 17 and the relative movement means (the X-axis drive mechanism 32, the Y-axis drive mechanism 33, the Z-axis drive mechanism 34), and the like. By constructing the control means for continuously performing deep hole machining at the machining position, when the abnormality of the gun drill 20 is detected by the tool abnormality detecting means (current detector 36), the tool length measuring means (tool length measuring instrument ( 22)] and the loss judgment means for measuring the length dimension of the gun drill 20 and determining that it is a gun drill loss when this measurement length is shorter than the prescribed dimension compared with the preset initial length. The deep hole processing continuation means which continues deep hole processing at a suspension processing position when it is determined that it is not a gun drill breakage, and the gun drill 20 attached to the main shaft 17 when it is determined that it is a gun drill loss in a loss determination means. With new gun drill (20) At the same time, the cutting processing means for filling in the cutting list (cutting list storage area 46) of the effect that the deep hole cutting at the cutting position is the key drill cutting, and the deep hole processing at all processing positions When finished, the list output means for outputting the cutting list (cutting list storage area 46) and the gun drill 20 mounted on the spindle 17 while controlling the automatic tool changer 21 are used. After attaching the tab, the core hole in which the tapping is commanded among the deep holes processed at the plural machining positions is skipped, referring to the cutting list (cutting list storage area 46), and skipping the deep hole with the gun drill cutting. And tab processing means for executing tab processing.

<Temperature Control Fluid Flow Path Processing (see FIGS. 4A to 4D)>

4A to 4D show the processing steps of the temperature regulating fluid passage 1 shown in FIG. 1. In the process of the temperature control fluid flow path 1, the following process is performed in order.

(1) Guide hole processing process (refer FIG. 4A)

After the punch holes are drilled at a plurality of machining positions of the workpiece W, the normal tool 51 is mounted on the main shaft 17 by the automatic tool changer 21, and the punch holes are drilled with the drill 51. As a guide, the guide hole 52 is processed in the multiple processing position of the workpiece | work W. As shown in FIG.

(2) Chamfering process of guide hole (refer FIG. 4B)

The chamfering tool 53 is attached to the main shaft 17 by the automatic tool changer 21, and the chamfering 54 is performed on the circumferential surface of the guide hole 52 with the chamfering tool 53.

(3) deep hole processing process (refer to FIG. 4C)

The gun drill 20 is attached to the main shaft 17 by the automatic tool changer 21, and the core drill 20 processes the deep hole 2 using the guide hole 52 as a guide.

(4) tap machining process (see FIG. 4D)

The tab 55 is attached to the main shaft 17 by the automatic tool changer 21, and the female screw 3 is machined at the end of the deep hole 2 by the tab 55. The stopper member 4 is screwed to the female screw 3 to form the temperature control fluid passage 1.

<Detailed deep hole processing process (refer FIG. 5 thru | or 8)>

In the present invention, the (3) deep hole processing step is characterized. Therefore, this (3) deep hole processing process is explained in full detail.

In the program memory 44, a machining program for performing deep hole machining is stored. In this deep hole machining program, for example, the G code of the following format is described.

G555 X_Y_Z_R_A_Q_

Here, X, Y, Z, R, A and Q are values shown in FIG.

That is, X: X coordinate value of the center of the deep hole

Y: Y coordinate value of the center of the deep hole

Z: Final Z coordinate value of the deep hole

R: Send Fast Access Point

A: Approach point (depth to insert into the guide hole while rotating the gun drill)

Q: distance from gun drill tip to shoulder

The NC device 31 analyzes the machining program described in this way, so that the relative movement mechanisms (X-axis drive mechanism 32, Y-axis drive mechanism 33 and Z-axis drive mechanism 34) and the spindle motor 16 are analyzed. Deep hole processing is performed according to the flowchart shown in FIG. 6, controlling the cutting oil pump 24 etc. Specifically, the following process is executed.

In ST (step) 1, the cutting list (cutting list storage area 46) is cleared.

In ST 2, a tool error interrupt monitoring routine is started.

In ST 3, deep hole processing is performed.

For example, the part program reads "G555 X10. Y20. Z110. R2. A10. Q3 &quot;, the main axis 17 is shifted to the X, Y coordinate values, and then is quickly sent from the position to the position of R2. Thereafter, while the rotation of the main shaft 17 is stopped, the motor is sent to the position of A10, and then the motor is sent to the position of Z110 while the main shaft 17 is rotated. As a result, the deep hole is processed.

In ST 4, it is checked whether all deep hole machining is finished. If all deep hole processing is not complete | finished, it returns to ST3 and performs deep hole processing. If all deep hole machining has been completed, the process proceeds to ST5.

In ST 5, the tool error interrupt monitoring routine ends.

In ST6, the cut list written in the cut list storage area 46 is output, that is, displayed on the display 42 or printed out to the printer 43.

Thereby, deep hole processing is performed continuously in the plural processing positions of the workpiece | work W. As shown in FIG.

In this process, when the tool abnormal interrupt monitoring routine is started in ST2, the tool abnormal interrupt monitoring routine shown in FIG. 7 is executed at regular intervals.

In ST 11, the current value of the main shaft motor 16 is read from the current detector 36.

In ST 12, the spindle load factor is calculated from the read current value of the spindle motor 16.

In ST 13, it is checked whether the spindle load factor is a predetermined value, a preset overload factor, for example, 50% or more of the rated torque (tool abnormality detection step). Here, if the value set by the spindle load ratio is not more than 50% of the rated torque, the flow returns to the main routine shown in Fig. 6 to continue deep hole machining at the suspension position. If the value set by the spindle load ratio in advance is 50% or more of the rating, it is determined as a tool error and the procedure proceeds to ST14.

In ST 14, the rotation of the main shaft 17 is stopped to store the suspended working condition data.

In ST 15, tool length measurement is performed. That is, after retracting the gun drill 20 from the core hole currently being processed, the tip of the gun drill 20 is brought into contact with the detector 22A of the tool length measuring instrument 22. When the tip of the gun drill 20 is in contact with the detection unit 22A of the tool length measuring instrument 22, a contact signal is given from the tool length measuring instrument 22 to the NC device 31. Then, the NC apparatus 31 reads the Z-axis coordinate value at this time, and calculates a tool length (measurement length of a gun drill) from this Z-axis coordinate value.

In ST16, it is checked whether the measured length of the measured gun drill 20 is negative compared with the initial length memorize | stored previously, for example, 2 mm or more (loss determination process). Here, if the measured length is not more than 2 mm compared to the initial length, it is determined as tool wear, and the process returns to the main routine shown in FIG. 6 to continue the deep hole machining at the suspension machining position (deep hole continuing process). If the measured length is 2 mm or more compared with the initial length, it is determined as a loss and the procedure proceeds to ST 17.

In ST 17, the tool changer which mounts the new gun drill 20 to the spindle 17 is performed by the automatic tool changer 21 instead of the gun drill 20 attached to the spindle 17.

In ST 18, information that the deep hole machining at the suspension machining position is a gun drill cutting is written in the cutting list. For example, after writing various data (X_Y_Z_R_A_Q_) and machining condition data (for example, spindle speed and feed rate) at the machining position where the gun drill was broken, ST 3 and the main routine shown in FIG. Returning between ST4, deep hole processing is performed in the next processing position (loss treatment process).

Therefore, when all the deep hole machining ends in this way, since the cutting position and the deep hole machining data which were cut are written in the cut list, when the cut list is output in ST6 (list output process), the cut is performed. From the machining list, the deep hole machining at the machining position where the damage was made can be grasped immediately. For example, as shown in Fig. 8, various data (X_Y_Z_R_A_Q_), machining condition data, etc. at the machining positions N3 and N8 where the gun drill has been cut are output, so that deep hole machining at the machining position where the cut has occurred is immediately performed. I can figure it out.

In addition, in the (4) tapping process, tapping is performed with reference to the output cutting list.

That is, in the tapping process, the tab 55 is mounted in place of the gun drill 20 mounted on the spindle 17 while controlling the automatic tool changer 21, and then tapping in the deep hole that is processed at a plurality of machining positions. With respect to the commanded deep hole, a tap is performed while skipping the deep hole which became the gun drill broken while referring to the cut processing list. Therefore, it can carry out from deep hole processing to tap processing continuously.

<Modifications>

In addition, this invention is not limited to embodiment mentioned above, The deformation | transformation, improvement, etc. in the range which can achieve the objective of this invention are contained in this invention.

In the above embodiment, the table 12 is moved in the X-axis direction, the spindle head 15 is moved in the Y-axis direction, and the saddle 13 is moved in the Z-axis direction, but the table 12 and the main shaft 17 are moved. The relative movement means for relative movement is not limited to this. In other words, any structure can be used as long as the table 12 and the main axis 17 can move relative to each other in the three-dimensional direction.

In the above embodiment, the current of the spindle motor 16 is detected by the current detector 36, and the spindle load ratio is obtained from the current to detect the tool abnormality. However, the tool abnormality detecting means is not limited thereto. Other principles may be used as long as the load applied to the main shaft 17 can be detected.

In the said embodiment, when a tool abnormality was detected, the gun drill length was measured and the loss was judged by what predetermined value or more was negative compared with the initial length, but it is not limited to this. For example, you may scan light in the longitudinal direction of the gun drill 20, receive light from the opposite side, and measure the length of the gun drill 20 from this light reception position.

In the said embodiment, after processing the deep hole 2 to the workpiece | work W, it was made to process the female screw 3 to the edge part of the deep hole 2, However, you may abbreviate | omit the process of the female screw 3. For example, the plug member 4 may be press-fitted and adhered to an end portion of the deep hole 2.

In the above embodiment, the high pressure cutting oil pressurized by the cutting oil pump 24 was configured to be supplied from the tip of the gun drill 20 through the main shaft 17 and the cutting oil flow paths 17A and 20A of the gun drill 20. It is not limited to this.

For example, as shown in FIG. 9, the oil inlet block 18 connected to the cutting oil pump 24 is provided in the front-end | tip of the spindle head 15, and the oil inlet block ( The cutting oil flow path 15A communicating with the cutting oil flow path 20A of the gun drill 20 may be formed from 18 to supply the cutting oil from the cutting oil pump 24 through these cutting oil flow paths 15A and 20A.

In the said embodiment, although the example which processes the temperature control fluid flow path 1 of the workpiece | work W was demonstrated, this invention is not limited to this. Any workpiece may be used as long as the core hole is processed at a plurality of machining positions of the workpiece W.

Claims (5)

In the deep hole processing method which performs a deep hole processing continuously in the multiple processing position of a workpiece | work with the processing apparatus which attached the gun drill to a spindle,
A tool abnormality detection step of detecting an abnormality of the gun drill;
A loss determination step of stopping rotation of the main shaft when the abnormality of the gun drill is detected and determining whether the gun drill is broken;
A deep hole machining continuing step of continuing the deep hole machining at the current machining position when it is determined that the gun drill is not damaged in the loss determination step;
When it is determined that the gun drill is broken in the damage determination step, the tool is replaced with a new gun drill and the deep hole machining at the cutting position is cut. A loss processing step of filling in the list and performing deep hole processing at the next processing position;
And a list output step of outputting the cut list when deep hole machining at all the machining positions is completed. The deep hole machining method according to claim 1, wherein in the cut processing step, current machining condition data is also written in the cut list as information indicating that the gun drill is broken. The deep hole according to claim 1 or 2, wherein the deep hole in which the tapping is commanded among the deep holes processed at the plurality of processing positions is referred to, and the deep hole in which the gun drill is broken is referred to with reference to the cut processing list output in the list output process. And a tapping process for skipping the tap and performing tapping. In the deep-hole processing apparatus which performs a deep-hole processing continuously in multiple processing positions of a workpiece | work,
A table on which the work is placed;
A main shaft equipped with a gun drill for deep hole machining on the workpiece;
Relative moving means for relatively moving the table and the main axis;
Tool abnormality detecting means for detecting an abnormality of the gun drill;
Tool length measuring means for measuring the length of the gun drill,
It is provided with control means which continuously performs a deep-hole processing to the plural processing positions of the said workpiece, controlling the said main axis and the said relative movement means,
Wherein,
When the abnormality of the gun drill is detected by the tool abnormality detecting means, the rotation of the main shaft is stopped, the length dimension of the gun drill is measured by the tool length measuring means, and the measured length is an initial length which is set in advance. Loss determination means for determining that the gun drill is broken when
Deep hole processing continuity means for continuing deep hole processing at the current machining position when it is determined in the loss determination means that the gun drill is not damaged;
When it is determined that the gun drill is broken in the damage determining means, the tool is replaced with a new gun drill and the deep hole machining at the suspension position is cut. Cut-off processing means for filling in the list and performing deep hole machining at the next machining position;
And a list output means for outputting the cut list when deep hole machining at all the machining positions is completed. 5. An automatic tool changer according to claim 4 having a plurality of gun drills and tabs, the tool changer being capable of tool exchange between them and the spindle;
The control means controls the automatic tool changer and mounts a tab instead of the gun drill mounted on the main shaft, and then, for the deep hole in which the tapping is commanded among the deep holes processed at the plurality of processing positions, the cut list. A deep-hole processing apparatus, characterized by having a tapping means for skipping a deep hole in which gun drill is broken and for performing tapping.

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