JPH11277368A - Race groove processing device and its processing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To manufacture a product stably in dimension by grasping a processing condition through the monitoring of detected signals from a processing machine located at a remote site, and also through making proper adjustment and setting by means of remote control. SOLUTION: This invention is related to a device processing a work W having a race groove (a) in which balls are rolled so as to be run, and the device is equipped with an information processing means 10 located at a remote site, which is connected by a telecommunication line 12. An individual processing device 1 allows a work to be processed by a processing machine part based on control from a control means 4, and is equipped with a setting means 15 having set basic processing information, and with a processing detection means 8. The difference between the set information of the setting means 15 and the detected information of the processing detection means 8, is operated by operation means 16, and is fed back to the control means 4. The fed back information is used for controlling the control means 4, and is concurrently transferred to the information processing means located at the remote site. A processing condition is grasped by the information processing means 10 at remote site, and the content of setting for the setting means 15 is renewed by information given from the means 10 through the telecommunication line 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing device such as a grinding device and a turning device for processing race grooves of components such as rolling bearings and constant velocity universal joints, and a method of processing the same.

[0002]

2. Description of the Related Art In race races of rolling bearings and constant velocity universal joints, extremely high precision is required because steel balls roll. Therefore, we monitor the processing equipment and inspect the products on site for deviations in the finished dimensions and grinding processing failures, and adjust the settings of the processing conditions according to the monitoring results and inspection results. ing.

[0003] However, the processing conditions for this kind of component are diverse, and many conditions are complicatedly involved. For example, spindle rotation speed, machining feed amount, machining feed speed, dress condition,
Processing conditions such as the amount of dress correction are intertwined with each other. For this reason, it is difficult for an operator to judge this for each monitoring result and each inspection, and to take appropriate measures. Therefore, depending on the monitoring results and inspection results, a specialist engineer of the processing equipment manufacturer goes to the site to understand and diagnose the operation status,
The adjustment of the control device was performed, and time and labor were required.

In addition, maintenance has conventionally required time and labor since the aging of each processing device is grasped at the installation location of each processing device and maintenance of the components is performed. In order to maintain the accuracy and performance of the processing equipment, it is necessary to accumulate the history of the past processing data for each equipment. In the case of installation in an apparatus, the equipment cost is high and the utilization efficiency of the equipment is poor. On the other hand, in the production of bearings and constant velocity universal joints, in order to produce a large number of parts, many processing apparatuses of the same type are installed and operated under similar processing conditions in many cases. In such a case, the same processing conditions may be adjusted for each processing apparatus in some cases. However, since the adjustment is conventionally performed for each processing apparatus, the efficiency of the adjustment operation is low.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and monitor a detection signal of a processing apparatus at a remote location to grasp the processing status and the like, and perform appropriate adjustments and settings by operating the remote location. It is an object of the present invention to provide an apparatus and a method for processing a race groove which can be produced with stable dimensions.

[0006]

A device for processing a race groove according to the present invention is a device for processing a part (W) having a race groove (a) on which a ball rolls. 3), a control unit (4) for controlling the machining unit (3), and a detection unit (8) for detecting information on machining.
Setting means (15) for setting reference processing conditions; reference processing conditions of the setting means (15) and the detection means (8)
Calculating means (16) for calculating a difference from the detection information of the first and second feedback means (1) for transmitting the calculation result of the calculating means (16) to the control means (4) as feedback information.
7), an information processing means (10) remote from the control means (4), these control means (4), reference processing condition setting means (15) and information processing means (10) through a communication line. Communication means (9) for connection. The control means (4) uses the feedback information for control. The information processing means (10) obtains the feedback information via a control means (4) and a communication line (12), and provides information to the control means (4) and a reference processing condition setting means (15). It has a function. The detection means (8) may be sensors provided in the machining part (3) or may be means for reading information stored in a predetermined storage part such as the control means (4). According to this processing device, information on processing is detected by the detection means (8) at the time of processing or at any time. The difference between the detection information and the reference machining condition set in the setting means (15) is calculated by the calculating means (16),
Feedback means as feedback information (17)
To the control means (4). The control means (4)
This feedback information is used for controlling the processing machine unit (3), and is transmitted to a remote information processing unit (10) via the communication unit (9) and the communication line (12). The information processing means (10) performs predetermined processing such as displaying the transmitted detection information on a screen or processing the information, and controls the predetermined information by the control means (4) and the setting means (15). Give to. The setting means (15) updates the setting contents with the information given from the remote information processing means (10). Thereafter, the updated setting contents are compared with the detection contents of the detecting means (8) by the calculating means (16). For this reason, for example, the detection information of the detection means (8) is monitored by the information processing means (10) in a remote place such as another business office, and a technician or a computer in the remote place processes the processing machine section based on the detection information. In addition to grasping and diagnosing the operation status of (3), information for changing the set value of the control means (4) is created in accordance with the diagnosis result, and the created information is used as information processing means (10). And the like, the processing machine part (3) can be maintained in an appropriate operating state.

In the present invention, between the control means (4) and the setting means (15) and the communication means (9), the information processing means (11) on the machine side different from the information processing means (10) at a remote place. ) May be provided. In this case, the information processing means (10) in the remote place exchanges information with the control means (4) and the setting means (15) via the information processing means (11) on the machine side. Parts with race grooves (a)
It may be a part of a bearing or a part of a constant velocity universal joint. The processing machine part (3) may be a grinding device or a turning device.

In the present invention, the setting means (15)
The processing condition may be included in the reference processing condition set in (1) and the information on the processing detected by the detection means (8). Further, the reference processing conditions set by the setting means (15) and the information on the processing detected by the detection means (8) may include information on the shape and accuracy of the product. The term "product" as used herein means a product obtained from the part (W) by processing with the race groove processing apparatus. Furthermore, the reference processing conditions set by the setting means (15) and the information on the processing detected by the detection means (8) may include information on the shape and accuracy of the product.

The method of machining a race groove according to the present invention is a method of machining a part (W) having a race groove (a) on which a ball rolls by a machining machine section (3) under the control of a control means (4). Then, the reference processing conditions are set in the setting means (15), and information on the processing is detected by the detection means (8) from the machining part (3) and the control means (4). The difference between the reference processing condition of the setting means (15) and the detection information of the detection means (8) is calculated by the calculation means (16), and the calculation result is transmitted to the control means (4) as feedback information.
The control means (4) uses the feedback information for control, and transmits the feedback information to a remote information processing means (10) connected to the control means (4) via a communication line (12).
Based on the transmitted information, remote information processing means (1
The information generated in (0) is provided to the control means (4) and the setting means (15), and the setting contents of the reference processing conditions of the setting means (15) are updated. The remote location information processing means (10)
May be information input by the operator.

[0010]

An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a conceptual configuration of a race groove machining apparatus according to this embodiment. This race groove processing device includes an individual processing device 1 and an information processing unit 2. The individual processing apparatus 1 is mainly configured by a processing machine unit 3 and a control unit 5 and includes a detection unit 8 for processing information.
The control unit 5 includes a control unit 4 and a reference processing condition setting unit 1.
5, detecting means 8 for processing-related information, and calculating means 16
And a feedback unit 17. Processing machine part 3
Is a machine part of the individual processing apparatus 1 that performs processing on the component W, for example, a machine tool such as a grinding apparatus or a turning apparatus. The processing machine unit 3 may include a loader that supplies and discharges the component W. The part W has a race groove a in which a ball such as a steel ball rolls,
For example, the inner ring and outer ring of a rolling bearing, the inner ring and outer ring of a constant velocity universal joint, the screw shaft and nut of a ball screw, and the like.

The control unit 5 includes, for example, a computer-based numerical control device (CNC device), a programmable controller (PC device), and an operation panel (not shown). Among the elements constituting the control unit 5, the processing machine unit 3
The control means 4 is a means for performing the above control. The control means 4
An information storage unit 7 for storing various setting information and detection information necessary for processing, and a processing unit 6 are provided. The processing unit 6 is a unit that performs a predetermined process according to the contents stored in the information storage unit 7, the feedback information of the feedback unit 17, and the machining program. The setting means 15 of the reference processing condition includes:
Various reference conditions for processing are set. For example, as processing conditions, a tool rotation speed, a tool feed speed, a tool feed amount, a dress condition for shaping a grindstone in the case of a grinding device, a spindle rotation speed (component rotation speed), and the like are set.
In addition, the condition (product condition) of the workpiece includes the product name,
Weight, grinding width of groove size, specific heat, expansion coefficient, dimensional accuracy of each part, etc. are set. Further, as information for grasping the processing state, processing power, product dimensions during processing, processing temperature, processing time, and the like are set. The processing detection means 8 is a general term for sensors for detecting information on the processing state of each part of the processing machine unit 3 and means for reading out predetermined storage contents in the information storage unit 7 of the control means 4. Note that the processing detection means 8 does not include a means for reading out the storage content of the information storage unit 7, and may be a general term for only the sensors of the processing machine unit 3. The calculating means 16 is a means for comparing the information on the processing detected by the processing detecting means 8 with the reference processing conditions set in the setting means 15 and calculating the difference. The feedback means 17 is means for transmitting the information on the difference calculated by the calculation means 16 to the control means 4 as feedback information.

The information processing unit 2 includes an information processing unit 11 installed near the control unit 4 of the individual processing apparatus 1 and a remote information processing unit connected to the information processing unit 11 via the communication unit 9. And 10. Each information processing means 1
Reference numerals 0 and 11 each include a computer or the like and have a communication function such as software for communication.
The communication means 9 is connected to both information processing means 1 via the communication line 12.
Means for performing bidirectional transmission of information between 0 and 11;
It comprises a communication device 14 on the machine side and a communication device 13 on the remote side. The communication line 12 may be a public communication line such as a telephone line network or a dedicated communication line, and may be an analog line or a digital line. The communication devices 13 and 14 include a modem or the like in the case of an analog line, and a DSU (digital service unit) or TA (terminal adapter) in the case of a digital line.

The information processing means 11 on the machine side includes a control means 4
And means for performing processing for transmitting and receiving information between the setting means 15 and the information processing means 10 at a remote place, and a personal computer or the like is used. The information processing means 10 at the remote place is connected to the information processing means 11 on the machine side from the detection means 8.
A function of displaying information transmitted via the PC on a screen in a predetermined format, and information of setting change of the control means 4 which is appropriately input or created by the information processing means 10 is transmitted from the communication means 9 to information processing on the machine side. And a function of transmitting to the means 11. The remote information processing means 10 may also have a function of storing, analyzing, and managing information transmitted from the detection means 8 via the information processing means 11 on the machine side in a predetermined format. preferable. The information processing means 10
Alternatively, a plurality of computers may be connected by a bus or a communication line, and each computer may share functions such as the accumulation, analysis, and management.

The information processing means 10 at the remote place and the information processing means 11 at the machine side may be connected via the communication means 9 in a one-to-many connection or a many-to-many connection. Further, the information processing means 11 on the machine side may be one of computers connected by a local area network in a business establishment, and the information processing means 10 in a remote place may be a local area network in another business establishment. It may be one of the computers connected by a network. Communication between the two information processing means 10 and 11 may be performed via a web server or the like using the Internet according to the TCP / IP protocol or the like, or may be performed directly without passing through the web server. good.

FIG. 2 is an explanatory diagram combining a plan view and a block diagram showing a specific example of the individual machining apparatus 1 of FIG.
The processing machine unit 3 includes a grinding device that grinds a race groove a on an outer diameter surface of a component W that is a workpiece. The component W is, for example, an inner ring of a rolling bearing described later with reference to FIG.
The processing machine unit 3 including the grinding device includes a main shaft 22 that grips and rotates the component W, a rotating grindstone 27, a dressing device 30, and a loader 24.

The spindle 22 is a spindle support 21a of the headstock 21.
It is installed rotatably. The headstock 21 is installed on a base 20 which is a grinding machine main body so as to be able to advance and retreat in the axial direction of the spindle 21 (Y-axis direction). The center difference between the race groove a of the component W and the rotary grindstone 27 is corrected by the advance / retreat of the spindle 22 caused by the advance / retreat of the headstock 21. The gripping of the component W by the spindle 22 is performed by an electromagnetic spindle chuck. The spindle 22 is driven to rotate by a spindle motor (not shown) installed on the headstock 21. On the headstock 21 or at a position near the headstock 21, a loader 24 that carries in unprocessed parts W to the spindle 22 and discharges processed parts W is installed. The loader 24 is driven by a loader control motor 25.

A grindstone base 26 is mounted on the base 20 so as to be able to advance and retreat in a direction perpendicular to the main shaft 22 (X-axis direction). The grindstone shaft 27a of the rotating grindstone 27 is rotatably installed. The wheel head 26 is moved forward and backward by a wheel head control motor 28. The rotating grindstone 27 is rotated at a high speed by a grindstone rotating drive motor (not shown) installed on the grindstone stand 26. The processing power of the grinding wheel rotation drive motor is detected by a power detector 29. Power detector 29
For detecting the electric power of the motor, an AE sensor or the like is used.

The dressing device 30 is a device for shaping the rotary grindstone 27 comprising a dressing tool 31, a dress turning motor 32, a dress correction motor 33 and the like. Diamond or the like is used for the dress tool 31. Dress rotation motor 32
Is to revolve the dressing tool unit composed of the dressing tool 31 and its supporting frame in the circular arc direction in the cross section of the rotating grindstone 27, and by rotating the dressing tool 31 while rotating the dressing tool 31, the rotating grindstone is 27 is shaped. The dress correction motor 33 is a motor that moves the dress tool 31 forward and backward to correct the positional relationship between the dressing tool 31 and the rotating grindstone 27 shaped by the dress. The gauge device 34 is a device that measures the dimension of the race groove a of the component W held on the main shaft 22 during processing and before and after processing, and is installed to face the shaft end of the main shaft 22. The gauge device 34 includes a gauge rotation motor 35.
As a result, the robot is turned between the measurement position and the standby position. The demagnetizer 36 is provided inside or outside the processing machine unit 3, and serves to erase the magnetism of the component W chucked by electromagnetic force during processing.

A control device 37 is installed adjacent to the processing machine unit 3, and a part or the whole of the control device 37 constitutes the control unit 5 including the above-mentioned CNC device. The gauge device 34 and the power detector 29 form a part of the processing detection means 8 in FIG. In the information processing unit 2, a computer is used for the information processing means 10 and 11 on the remote location and the machine side, and a modem is used for the communication devices 13 and 14 on the remote location and the machine side in the communication means 9. The information processing means 11 on the machine side sends processing condition information to the control means 4,
It has a function to send and receive product information, processing state information, and the like, and to manage such information. The remote information processing means 10 can collectively store, analyze, and manage the processing data of the processing apparatus main body 1, and can monitor the operation state history of the processing machine unit 3 and issue a maintenance instruction. It is.

FIG. 3 shows an example of a rolling bearing including the aforementioned component W. This bearing is provided between an inner ring 41 and an outer ring 42 by a rolling element 43 made of a steel ball or the like held by a retainer 44.
, And a seal 45 is attached to the outer ring 42. The inner race 41 and the outer race 42, which are race rings, each have race grooves 46, 47 having an arc-shaped cross section. The inner ring 41 is a component W to be processed by the processing machine unit 3 including the grinding device of FIG.

The operation of the above configuration will be described. Processing machine part 3
Processes the part W under the control of the control means 4. Various reference conditions necessary for processing are set in the setting unit 15 as described above. For example, conditions for processing such as a grindstone rotation number, conditions for a workpiece such as a product name, and information for grasping a processing state such as a processing power are set. These setting conditions are transmitted from the remote information processing unit 10 through the communication line 12 and the machine side information processing unit 11.
It is set in the setting means 15 and updated. The range of the product set in the setting means 15 is a fixed amount,
For example, the range of products that are likely to be processed by the individual processing apparatus 1 is set, and the various reference conditions for these products are set in the setting unit 15. When a product not set in the setting means 15 enters the processing line including the individual processing device 1, the reference condition for the product is set in the setting means 15 from the remote information processing means 10. When a product to be processed is selected by the control unit 5 of the individual processing apparatus 1 or the information processing means 10 at a remote location, a condition corresponding to the selected product among the reference processing conditions set in the setting means 15 is controlled. The information is taken into the means 4 via the information processing means 11 on the machine side, and processing is performed under the control of the control means 4 according to this condition. The information captured by the control means 4 is stored in the information storage unit 7 or the like.

On the other hand, in the processing machine section 3, the processing detecting means 8
Changes in processing power and dimensions of part W, processing temperature,
The processing time and the like are detected, and information (the number of rotations and the feed amount) according to the processing conditions is detected. The detection of the information according to the processing conditions is performed by reading the storage contents of the information storage unit 7 of the control means 4. These pieces of detection information are sequentially compared with reference processing conditions set in the setting unit 15 (reference processing conditions according to the selected product), and the difference is calculated by the calculation unit 16. The information on the difference calculated by the calculating means 16 is given as feedback information to the control means 4 by the feedback means 17, and the control means 4 controls the machining by the machining section 3 using the feedback information. At the same time, the feedback information is transmitted from the control means 4 to the remote information processing means 10 through the machine-side information processing means 11.

For this reason, by monitoring the detection signal of the processing detection means 8 of the individual processing apparatus 1 without remote control, the production can be performed with stable dimensions. Further, the secular change of the processing machine unit 3 can be easily grasped, and the maintenance instruction for the components and the like can be accurately performed. In addition, the history of the processing information of each processing machine 3 can be collectively accumulated, analyzed, and managed by the remote information processing means 10. Therefore, processing accuracy can be improved at low equipment cost, and equipment management can be made more efficient. In the production of bearings and constant velocity universal joints, many individual processing apparatuses 1 of the same type are often installed, and therefore, the processing conditions and control conditions set in the control means 4 of these individual processing apparatuses 1 are changed. The function of changing all at once by the information processing means 10 at a remote location effectively works.

When the processing machine unit 3 is a grinding machine as in the specific example of FIG. 2, the reference processing conditions set in the condition setting unit 15 and the information detected by the processing detection unit 8 are as follows.
More detailed examples are as follows. Among the processing condition information, the information related to the grindstone includes a rapid feed amount, a rapid feed speed, a back-off amount, a back-off speed, a coarse feed amount, a coarse feed speed,
Finish feed amount, finish feed speed, finish feed stabilization time,
Information such as a grinding wheel initial size, a grinding wheel replacement size, an offset, a spindle rotation speed, and a grinding wheel rotation speed are used. Among the processing condition information, the dress-related information is each information such as a dress correction amount, a dress turning radius, a dress position correction amount, a dress speed, and a dress skip. The processing state information is information on processing power, processing dimensions, processing temperature, and processing time. The product shape and accuracy information are each information of a product groove diameter, a product grinding width, a product weight, a product specific heat, a product expansion coefficient, and a product name.

Although the above embodiment has been described with reference to the case of processing the component W serving as the inner ring 41 (FIG. 3) of the rolling bearing, the component processed by the race groove processing device is the outer ring 42 of the bearing. The inner ring 51 and the outer ring 52 of the constant velocity universal joint illustrated in FIG. 4, or a screw shaft or nut of a ball screw may be used. The constant velocity universal joint shown in FIG. 4 has race grooves 5 provided on an inner race 51 and an outer race 52, respectively.
A rolling element 55 made of a steel ball or the like is interposed between the rollers 3 and 54. The rolling elements 55 are held in pockets of a holder 56. The inner ring 51 is a component having the shaft portion 57. The race groove 53 is provided on the outer diameter surface along the axial direction,
The groove bottom line is formed in an arc shape along the axial direction. Outer ring 5
Reference numeral 2 denotes a cup-shaped component having a shaft portion 58. The race groove 54 is provided on the inner diameter surface along the axial direction, and the groove bottom line is formed in an arc shape along the axial direction. The opening of the outer ring 52 is covered with a flexible boot 59 made of rubber or the like having both ends attached to the vicinity of the opening of the outer ring 2 and the shaft portion 57 of the inner ring 51.

Although the above embodiment has been described in connection with the case where each of the individual machining devices 1 is a grinding device, the individual machining device 1 may be a turning device. Further, the individual processing device 1 including a grinding device and the individual processing device 1 including a turning device may be connected to a common remote information processing unit 10 via a communication unit 9 and a machine side information processing unit 11. good.

FIG. 5 shows a development example of a communication system of the race groove machining apparatus. Each of the plurality of individual processing apparatuses 1 installed in the predetermined business office 63 is connected to a common information processing means 11 alone or in plurals.
Configures a local area network with the web server 60, the firewall 61, and the router 62. This local area network has a communication line 12
Via the Internet 64, another business establishment 6
The information processing means 10 is connected to remote information processing means 10 installed in local area networks 5, 66.

[0028]

According to the apparatus and method for processing a race groove of the present invention, it is possible to produce a stable size by monitoring the detection signal of the processing apparatus without going to the site by remote control. The secular change of the processing machine part can be grasped at a remote place, and the maintenance of its components can be easily performed. In addition, the history of processing information of many individual processing
The communication means and the information processing means at a remote location can collectively store, analyze, and manage the equipment, thereby reducing the equipment cost and improving the efficiency of equipment management. Furthermore, as in the case of grinding and turning of bearing parts and constant velocity universal joint parts,
When a large number of individual processing apparatuses of the same type are installed, a function of collectively changing the processing conditions and control conditions works effectively.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a conceptual configuration of a race groove machining apparatus according to an embodiment of the present invention.

FIG. 2 is an explanatory view showing a combination of a plan view and a block diagram of a processing mechanism of the race groove processing apparatus.

FIG. 3 is a sectional view of a bearing including an example of a part to be processed;

FIG. 4 is a sectional view of a constant velocity universal joint including an example of a part to be processed.

FIG. 5 is a block diagram showing a development example of a communication system of the race groove processing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Individual processing apparatus 2 ... Information processing part 3 ... Processing machine part 4 ... Control means 5 ... Control part 8 ... Detection means 9 ... Communication means 10 ... Remote information processing means 11 ... Machine side information processing means 12 ... Communication Circuits 13, 14 Communication equipment 15 ... Setting means for standard processing conditions 16 ... Calculation means 17 ... Feedback means W ... Parts a ... Race grooves

Claims (9)

[Claims] 1. An apparatus for processing a part having a race groove on which a ball rolls, comprising: a processing machine for performing the processing; control means for controlling the mechanical processing part; and detecting means for detecting information relating to the processing. Setting means for setting a reference processing condition; calculating means for calculating a difference between the reference processing condition of the setting means and the detection information of the detection means; and a calculation result of the calculation means as feedback information to the control means. A communication means for connecting the information processing means with the control means and the reference processing condition setting means and the information processing means via a communication line; Is used for control, and the information processing means obtains the feedback information via the control means and a communication line. A race groove processing apparatus having a function of giving information to the control means and the reference processing condition setting means. 2. An information processing means on a machine side different from the information processing means at a remote place is provided between the control means and the setting means for setting reference processing conditions and the communication means, and the information processing means at the remote place is provided. 2. The race groove processing apparatus according to claim 1, wherein the means exchanges information with the control means and the reference processing condition setting means via the information processing means on the machine side. 3. The race groove processing apparatus according to claim 1, wherein the part having the race groove is a part of a bearing or a part of a constant velocity universal joint. 4. The race groove processing apparatus according to claim 1, wherein the processing machine section is a grinding apparatus. 5. The race groove processing apparatus according to claim 1, wherein the processing machine section is a turning apparatus. 6. The race according to claim 1, wherein the reference processing condition set in the setting means and the information on the processing detected by the detection means include the processing condition. Groove processing equipment. 7. The method according to claim 1, wherein the reference processing conditions set by the setting means and the information on the processing detected by the detection means include information on the shape and accuracy of the product. The race groove processing apparatus according to any one of the above. 8. The processing condition set in the setting means and the processing information detected by the detecting means include information on a processing state.
An apparatus for processing a race groove according to claim 7. 9. A method of processing a part having a race groove on which a ball rolls by a processing machine part under the control of a control means, wherein reference processing conditions are set in a setting means, and Detecting information on processing from the control means by the detection means, calculate the difference between the reference processing conditions of the setting means and the detection information of the detection means by the calculation means,
The calculation result is transmitted to the control unit as feedback information, the control unit uses the feedback information for control, and the feedback information is transmitted to a remote information processing unit connected to the control unit via a communication line,
A race groove machining method for providing information generated by the remote information processing means based on the transmitted information to the control means and the setting means, and updating the set contents of the reference machining conditions of the setting means.