GB2089068A - Numerical control machine tool - Google Patents
Numerical control machine tool Download PDFInfo
- Publication number
- GB2089068A GB2089068A GB8132573A GB8132573A GB2089068A GB 2089068 A GB2089068 A GB 2089068A GB 8132573 A GB8132573 A GB 8132573A GB 8132573 A GB8132573 A GB 8132573A GB 2089068 A GB2089068 A GB 2089068A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tool
- workpiece
- tools
- current position
- numerical control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/404—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/41—Servomotor, servo controller till figures
- G05B2219/41041—Compensation pulses as function of direction movement
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45141—Turret lathe
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50001—Multislides, multispindles with multitool turret for each
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50008—Multiple, multi tool head, parallel machining
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50014—Several, multi workpieces
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50291—Multi-tool, several tools
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/50—Machine tool, machine tool null till machine tool work handling
- G05B2219/50294—Tool offset length by going to a reference and recording distance
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Numerical Control (AREA)
Abstract
A numerical control machine tool has tools T1, T2 etc. mounted on the tool posts TP secured to the tool slide TS. Memories store the distance data between the original point WZ of a coordinate system set on a workpiece W to be machined and the positions of the edge tips of the tools positioned as selected. A reference position register holds the position of the tool slide TS, and a current position register indicates the current position of the edge tip of a tool to be used. When a tool is specified, the distance data stored in the respective memory is added to the content of the reference position register, and the result of the addition is set in the present position register, so that the tool slide TS is moved as much as the distance corresponding to the difference between the position instructed by the part program and the content of the current position register. Thus the tools T1, T2 etc. can be exchanged one after another while the coordinate system is maintained unchanged. <IMAGE>
Description
SPECiFICATION Numerical control machine tool which moves tools
according to workpiece coordinate system
This invention relates to a numerical control machine tool which moves tools according to a workpiece coordinate system set on a workpiece.
In a numerical control lathe, a coordinate system set on a workpiece is maintained according to the following method: Immediately after a desired one of the plurality of tools which are mounted on the tool slide has been selected or specified by a part program, a so-called "programming of absolute zero point instruction" such as for instance "G 50 X(x)
Z(z) EOB" is issued by the part program, so that, as shown in Figure 1, the current position (x, z) of the edge top of the specified tool is set in a current position register adapted to perform movement control according to numerical control, whereby an aimed coordinate system to be set on a workpiece can be maintained constant In Figure 1, reference character
W designates a workpiece to be machined; WZ, the zero point of the coordinate system set on the workpiece W; and T1, T2 and T3, tools at selected positions on the tool slide (not shown).
However, in the method, the coordinate system setting instruction "G 50" must be issued when the tool slide is at a particular position, and accordingly it is necessary to issue such an instruction that the tool slide is moved to the particular position before the programming of absolute zero point instruction is issued.
In another method, the difference distance data between the edge tip of a tool which is employed as a reference one and the edge tips of other tools are stored in a tool position offset memory, and positioning is carried out by adding the content of the memory corresponding to a tool to be used to the tool's movement instruction position, whereby the difference distances between the tools' edge tops are eliminated apparently.
However, the method is also disadvantageous in that the content of the current position register is increased as much as the offset memory's content, thus not indicating the edge top's position correctly.
Accordingly, an object of this invention is to eliminate the above-described difficulties accompanying a conventional method employed for a numerical control machine tool.
More specifically, an object of the invention is to provide a numerical control machine tool in which, no matter where the tool slide is positioned, the tools can be exchanged one after another while a workpiece coordinate system set on a workpiece is maintained unchanged, and the content of the current position register indicates the position of the edge top of a tool being used with high accuracy.
The foregoing object and other objects of the invention have been achieved by the provision of a numerical control machine tool having a plurality of tools mounted on the tool posts of a single type or gang tool holder secured to a tool slide, which, according to the invention, comprises memory means which store, in combination with tool numbers assigned to the tools, distance data between a workpiece coordinate system original point which is a fixed point set on a workpiece to be machined and the positions of the edge tops of the tools positioned as selected, respectively, and in which when a tool number is specified by a part program, the distance data stored in advance and corresponding to the tool number thus specified is added to the data in a reference position register which gives the position of the tool slide, the result of the addition is set in a current position register, and regarding the content of the current position register as the current position of the edge top of a tool having the specified tool number, the tool slide is moved as much as a distance corresponding to the difference between the position of the tool instructed by the part program and the content of the current position register which indicates the present position of the edge top od the tool.
The nature, principle and utility of the invention will become morn apparent from the follovjing detailed description when read in conjunction with the accompanying drawings.
In the accompanying drawings:
Figure 1 is a positional reistion diagram of a programming of absolute zero point instruction "G 5 0" which is usually employed;
Figure 2 is a positional relation diagram of tool distance data in one example of a numerical control machine tool according to this invention;
Figure 3 is an explanatory diagram showing data memories and position registers in the numerical control machine tool in Figure 2;
Figure 4 is an explanatory diagram showing a workpiece coordinate system set on a workpiece to be machined on the machine tool in Figure 2;
Figure 5 is a diagram for a description of the exchange of tools in the machine tool in Figure 2; and
Figures 6and 7 are explanatory diagrams showing other examples of the numerical control machine tool according to the invention.
A first example of a numerical control machine tool according to this invention will be described.
In Figure 2, reference character CH designates a chuck mounted on a spindle for holding a workpiece
W; and TS, a tool slide which is moved in the X-axis direction and in the Z-axis direction by a numerical control device. A plurality of tools T1, T2 .... and Tn are provided at optional positions on the tool posts
TP of a single type or gang tool holder TH (being a rotary tool holder in Figure 2 by way of example) which is provided on the tool slide TS.
(1) First, the tool slide TS is moved to a position
RZ which is at a predetermined distance from the chuck CH and to which the tool slide can be moved repeatedly with ease. This can be achieved by utilising the function which is generally known as "reference point return funtion", or by setting the tool slide TS to a reference point with a gage or the like.
(2) Memories MT1, MT2,.... and MTn which can store distance data frorn a workpiece coordinate system original point WE which is a fixed point on the workpiece W to the edge tips of tools which are at tool positions selected by a tool selecting machan- ism or the like, are provided as shown in Figure 3.
Distance data #X1,#Z1,#X2,#Z2,... and AXn, AZn, which are the X-axis direction components and the
Z-axis direction components, are stored in the memories. The positions of the tools in figure 2 are stored as shown in Figure 3.
(3) In addition, a reference position register BR for defining the position of the tool slide TS is provided (Figure 3). Under the conditions shown in Figure 2, an X-axis component position XBO and a Z-axis component position ZBO in the base position register
BR are reset to "O". Thereafter, as the tool slide TS is moved in the X-axis direction or in the Z-axis direction, the position data in the base position register
BR are renewed.
Thus, the preparatory operation has been achieved. The preparatory operation must be carried out whenever the powerswitclh is turned on forth numerical control machine tool.
(4) The tool slide TS is moved is a desired position. It is assumed that the contents of the base position register BR are renc-wed to %'B and Zs as a result of the movement.
(5) When, under this oondition, a tool number is specified by a part program, then the tool Tn is selected. At the same time, the contents of the tool
distance data memory Mtn corresponding to the tool
number Tn and the contents of the base position
register eR are subjected to addition, and the result of the addition is set in a current position register PR.
In other words, the following calculations are carried out and the resultant data is set in the current position register PR.
(MTn) (BR) (PR) # #Xn + XB - > Xp # #Zn + ZB - > Zp Thus, the contents Xp and Zp set in the current position register PR indicate correctly the distance from the workpiece coordinate system original point
WZ set on the workpiece W to the edge tip of the tool
Tn, as shown in Figure 4. In Figure 4, the position of a point Pn is the same as that of the point Pn in Figure 2. Accordingly, a workpiece coordinate system has been established for the tool Tn, with the point WZ as the coordinate original point.
(6) With the contents of the current position register PR as the top position of the tool Tn, the movement of the tool Tn is controlled; that is, the workpiece is machined with the tool Tn. The movement control of the tool Tn is such that the tool slide
TS is moved as much as a distance corresponding to the difference between the position of the tool instructed by the part program and the content of the current position register PR which indicates the current position of the edge top.
(7) After the workpiece has been machined with the tool Tn, other tools TI, T2 and so forth are operated completely in the same manner as that described in paragraphs (4), (5) and (6) above.
Accordingly, the following effects are obtained:
No matter where the tool slide TS is positiuned, by merely allowing the part program to specify the tool numbers the tools are exchanged one after another to machine the workpiece while the workpiece coordinate system with the point WZ as its coordinate original point is maintained unchanged. In this operation, the content of the current position register PR indicates the position of the edge top of a tool being used at present, with high accuracy.
This will be described concretelyv'it. reference to
Figure 5, in which the tool Tn is replaced by the tool Tri. in Figure 5, the positions of the points P1 and Pn are the same as those of the points P1 and Pn in
Figure 2.
When, after the machining with the tool Tn has been achieved, the edge tip o, the tool Tn is at a.
position which is away by XFEL, Z'D from the point Pn, the tool T1 is specified byte part program. As a result, the data calculation and data setting opera .ion are carried out as described in paragraph (5) above. In this case, the position of the edge top of the tool T1 is away by 'B. Zta from the point P1, similarly as in the case of the tool Tn.Therefore, the following data calculation and date setting operation are carried out: (MT1) (BR) (PR) #X1 + X'B = X'P #Z1 + Z'B = Z'P Thus, for the tool Tri, the position of the workpiece coordinate system original point WZ is held correctly.
A second example of the numerical control machine tool according to the invention will be described with reference to Figure 6.
As shown in Figure 6, two workpiece coordinate systems or more can be set for a workpiece W.
In Figure 6, a first workpiece coordinate system original point 1WZ is provided, and the distance data of too Is T01, T02 and so forth used in this coordinate system are stored in memories MTO1, MT02 and so forth, respectively.
Furthermore, a second workpiece coordinate system original point 2WZ is set, and the distance data of tools T11, T12 and so forth used in this coordinate system are stored in memories MT11, MT12 and so forth, respectively.
Therefore, a part of the workpiece W for which machining dimensions are specified with the coordinate original point 1WZ can be machined with the tools T01.T02 and so forth; and another part of the workpiece W for which machining dimensions are specified with the coordinate original point 2WZ can be machined with the tools T11, T12 and soon. Thus, the workpiece can be machined with a series of part programs. In other words, the troublesome operation that the coordinate system is switched after the tool slide TS is moved to a particular position, can be eliminated.
Athird example of the numerical control machine tool according to the invention will be described with reference to Figure 7. The tech nical concept of the second example (Figure 6) that a plurality of workpiece coordinate systems are set for machining a workpiece can be applied to a numerical control machine tool having a plurality of spindles. In this case, a workpiece can be freely machined by setting a workpiece coordinate system for each of the spindles. Thus, the third example is an improvernent of the second example Chucks mounted on two spindles holds workpieces AW and BW, respectively. A tool slide TS has an effective stroke enough to machine both of the workpiece AW and BW.Each of the distance data storing memories MT1, MT2 and so forth which are provided respectively for tools T1, T2, and so forth has areas A and B in which different data are stored.
The distance data of the tools T1, T2, etc. with respect to a workpiece coordinate system original point AWZ set for the workpiece AW are stored in the areas A, while the distance data of the tools z 1, T2, etc. with respect to a workpiece coordinate system original point BWZ set for the workpiece BW are stored in the areas B.
Under this condition, before a part program specifies a tool number (Ti, T2 or so forth), a code instruction (such as an M or G code) is issued to select the data in the area A or the data in the area B.
Accordingly, any workpiece can be machined with any toel in such a manner that, for instance, immediately after the workpiece BW has been machined with the tool T1,the workpiece AWls machined with the tool T2. Thus, the combinations of workpieces and machining tools can be selected as desired with the aid of the part program.
That is, no matter where the tool slide is positioned, the tools can be freely exchanged one after another while the coordinate system or sys tems are maintained unchanged.
Claims (4)
1. A numerical control machine tool having a plurality of tools mounted on the tool posts of a single type or gang tool holder secured to a tool slide, which comprises:
memory means which store, in combination with tool numbers assigned to said tools, distance data between a workpiece coordinate system original point which is a fixed point set on a workpiece to be machined and the positions of the edge tops of said tools positioned as selected, respectively,
and in which
when a tool number is specified by a part program, the distance data stored in advance and corresponding to said tool number thus specified is added to the data in a base position register which gives the position of said tool slide,
the result of said addition is set in a current position register, and
regarding the content of said current position register as the current position of the edge top of a tool having said tool number specified by said part program, said tool slide is moved as much as a distance corresponding to the difference between the position of said tool instructed by said part program and the content of said current position register which indicates the current position of the edge tip of said tool.
2. A numerical control machine tool defined by
Claim 1 wherein a plurality of workpiece coordinate systems are set for a workpiece W.
3. A numerical control machine tool defined by
Claim 2 wherein said tool is provided with a plurality of spindles.
4. A numerical control machine tool which is substantially as described with reference to the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15162280A JPS5775311A (en) | 1980-10-29 | 1980-10-29 | Numerical control machine tool performing shift of tool by work coordinate system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2089068A true GB2089068A (en) | 1982-06-16 |
| GB2089068B GB2089068B (en) | 1984-09-26 |
Family
ID=15522561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8132573A Expired GB2089068B (en) | 1980-10-29 | 1981-10-29 | Numerical control machine tool |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5775311A (en) |
| DE (1) | DE3142615A1 (en) |
| FR (1) | FR2492716B1 (en) |
| GB (1) | GB2089068B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866643A (en) * | 1987-10-09 | 1989-09-12 | Brown & Sharpe Manufacturing Company | Method for automatic compensation of probe offset in a coordinate measuring machine |
| US5134570A (en) * | 1988-01-20 | 1992-07-28 | Mitsubishi Denki K.K. | Offset configuration forming method |
| US6157869A (en) * | 1992-10-06 | 2000-12-05 | Fanuc Ltd. | Machining program checking method for a numerical control device |
| EP1243992A2 (en) * | 2001-01-31 | 2002-09-25 | Mori Seiki Co., Ltd. | Tool presetter and tool offset amount calculation method |
| EP1541280A1 (en) * | 2002-07-30 | 2005-06-15 | Citizen Watch Co. Ltd. | Tool selection method for machine tool, control device, and numerically controlled lathe |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3148409A1 (en) * | 1981-12-07 | 1983-06-16 | Oerlikon-Boehringer GmbH, 7320 Göppingen | AUTOMATIC CORRECTION DEVICE FOR TOOL REVOLVER ON LATHE |
| JPS5976701A (en) * | 1982-10-25 | 1984-05-01 | Fanuc Ltd | Control method of chasing type lathe |
| JPS6125208A (en) * | 1984-07-12 | 1986-02-04 | Hitachi Seiki Co Ltd | Automatic coordinate system setting device for machine tool |
| JPS6125209A (en) * | 1984-07-12 | 1986-02-04 | Hitachi Seiki Co Ltd | Automatic coordinate system setting device for machine tool |
| JPS6151203A (en) * | 1984-08-18 | 1986-03-13 | Fanuc Ltd | Numerical control system |
| JPS6165312A (en) * | 1984-09-07 | 1986-04-03 | Hitachi Seiki Co Ltd | Setting device for coordinate system of machine tool |
| JPS6165313A (en) * | 1984-09-07 | 1986-04-03 | Hitachi Seiki Co Ltd | Setting device for coordinate system of machine tool |
| JP2581535B2 (en) * | 1984-09-07 | 1997-02-12 | 日立精機 株式会社 | Machine tool coordinate system setting device |
| JPS61110206A (en) * | 1984-11-05 | 1986-05-28 | Hitachi Seiki Co Ltd | Coordinate system setting device of machine tool |
| JPH01246045A (en) * | 1988-03-28 | 1989-10-02 | Yamazaki Mazak Corp | Setting control of machining coordinate system in machine tool |
| NL8902274A (en) * | 1989-09-12 | 1991-04-02 | Brouwer & Co Machine | PUNCHING MACHINE. |
| JPH03246707A (en) * | 1990-02-26 | 1991-11-05 | Fanuc Ltd | Position correcting system by systems |
| JP6604058B2 (en) * | 2015-07-03 | 2019-11-13 | 村田機械株式会社 | Program conversion device, plate material processing system, and plate material processing method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS509877A (en) * | 1973-05-31 | 1975-01-31 | ||
| US4033206A (en) * | 1974-07-11 | 1977-07-05 | Daihatsu Motor Co., Ltd. | Numerically controlled machine tool |
| JPS5395484A (en) * | 1977-02-01 | 1978-08-21 | Fanuc Ltd | Numerical control system |
| JPS53114580A (en) * | 1977-03-17 | 1978-10-06 | Fanuc Ltd | Tool selecting system of numerical control machine tool |
-
1980
- 1980-10-29 JP JP15162280A patent/JPS5775311A/en active Pending
-
1981
- 1981-10-28 DE DE19813142615 patent/DE3142615A1/en not_active Ceased
- 1981-10-29 FR FR8120303A patent/FR2492716B1/en not_active Expired
- 1981-10-29 GB GB8132573A patent/GB2089068B/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4866643A (en) * | 1987-10-09 | 1989-09-12 | Brown & Sharpe Manufacturing Company | Method for automatic compensation of probe offset in a coordinate measuring machine |
| US5134570A (en) * | 1988-01-20 | 1992-07-28 | Mitsubishi Denki K.K. | Offset configuration forming method |
| US6157869A (en) * | 1992-10-06 | 2000-12-05 | Fanuc Ltd. | Machining program checking method for a numerical control device |
| EP1243992A2 (en) * | 2001-01-31 | 2002-09-25 | Mori Seiki Co., Ltd. | Tool presetter and tool offset amount calculation method |
| EP1243992A3 (en) * | 2001-01-31 | 2005-02-09 | Mori Seiki Co., Ltd. | Tool presetter and tool offset amount calculation method |
| EP1541280A1 (en) * | 2002-07-30 | 2005-06-15 | Citizen Watch Co. Ltd. | Tool selection method for machine tool, control device, and numerically controlled lathe |
| EP1541280A4 (en) * | 2002-07-30 | 2010-09-29 | Citizen Holdings Co Ltd | Tool selection method for machine tool, control device, and numerically controlled lathe |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2492716A1 (en) | 1982-04-30 |
| DE3142615A1 (en) | 1982-07-29 |
| FR2492716B1 (en) | 1986-08-08 |
| GB2089068B (en) | 1984-09-26 |
| JPS5775311A (en) | 1982-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2089068A (en) | Numerical control machine tool | |
| US4776247A (en) | Numerical control system | |
| EP0129092B1 (en) | Numerical control device for use with a machine tool | |
| JPH02152701A (en) | Spindle sliding type automatic lathe | |
| EP0046343A2 (en) | Numerical control method and apparatus | |
| GB1329021A (en) | Method and apparatus for setting of a machine tool | |
| US4584796A (en) | Numerical control grinding machine | |
| EP0122943A1 (en) | Method of controlling chasing lathe | |
| KR940010396B1 (en) | Automatic programming apparatus for mumerically control | |
| US4308771A (en) | Tool holder for chucker lathe | |
| DE3381786D1 (en) | METHOD FOR OPERATING A MACHINE TOOL. | |
| Madison | CNC machining handbook: basic theory, production data, and machining procedures | |
| GB1599585A (en) | Numerically-controlled machine tool system | |
| US20190202017A1 (en) | Selecting device, selecting method, and program | |
| JPH04159058A (en) | Numerically controlled device having tool correction amount input function | |
| EP0328663A4 (en) | Method of replacing the tools | |
| US4090240A (en) | Method and aid for preparing NC control programs for machine tools | |
| JPS5669003A (en) | Numerical control automatic lathe | |
| JPH0740171A (en) | Nc machine tool and confirmation of its tool information | |
| JPS5558949A (en) | Correcting method of slope error for machine tool main spindle | |
| JPS5565047A (en) | Method for resuming machining by numerical-controlled machine tool | |
| JPS5542773A (en) | Numerical control machine tool | |
| Hodges et al. | Work holding and tooling | |
| JPS56119358A (en) | Machine tool with work position correcting function | |
| GB2236410A (en) | Numerically controlled machining |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19941029 |