阅读说明：本技术 一种轮廓车削加工方法 (Contour turning method ) 是由 姚力军 张桐滨 周文 程忠飞 吴庆飞 童祯祥 于 2021-07-26 设计创作，主要内容包括：本发明提供一种轮廓车削加工方法,所述加工方法采用自动机床的极坐标插补功能。所述加工方法对刀具的要求较低,一般为常用标准刀具,且加工得到的表面粗糙度良好无需经过抛光、研磨等后续工序。(The invention provides a contour turning method, which adopts a polar coordinate interpolation function of an automatic machine tool. The machining method has low requirements on the cutter, is generally a common standard cutter, and can obtain a machined surface with good roughness without subsequent procedures such as polishing, grinding and the like.)

1. A contour turning method is characterized in that the machining method adopts a polar coordinate interpolation function of an automatic machine tool.

2. The machining method according to claim 1, wherein a turning tool feed value of the automatic machine tool in the turning process is 2000-9000 mm/min.

3. The machining method according to claim 1 or 2, wherein a nose R angle of the turning tool is 0.2 to 0.8.

4. The machining method according to any one of claims 1 to 3, wherein the machining method controls the automatic machine tool to perform machining by programming a machining program.

5. The machining method according to claim 4, wherein the machining program first performs the selection and positioning of the tool.

6. The machining method according to claim 5, wherein the tool is selected and then subjected to coordinate system setting, feed amount setting, and turning initial position setting in this order.

7. The machining method according to claim 6, wherein after the initial turning position is set, contour turning is started through polar coordinate interpolation;

preferably, after the contour turning is started, the machining plane selection, the linear interpolation and the circular interpolation are sequentially performed;

preferably, the feeding value of the linear interpolation is 1000-2000 mm/min;

preferably, the feeding value of the circular interpolation is 3500-4500 mm/min.

8. The machining method according to claim 7, wherein a circular sentence is adopted for spiral feed after the circular interpolation;

preferably, the spiral moves to adopt circular interpolation;

preferably, the feeding amount of the circular interpolation is 8000-10000 mm/min.

9. The machining method according to claim 8, wherein the polar coordinate interpolation is stopped after the spiral feed is finished;

preferably, after the polar coordinate interpolation is completed, the coordinate system reduction and the main shaft indexing release are sequentially performed.

10. The processing method according to any one of claims 4 to 9, wherein the processing program comprises, in order:

selecting and positioning a cutter, setting a coordinate system, setting feed amount, setting a turning initial position, starting polar coordinate interpolation, selecting a machining plane, linearly interpolating, circularly interpolating, performing spiral feed by adopting a circular sentence, stopping polar coordinate interpolation, restoring the coordinate system and releasing the main shaft graduation.

Technical Field

The invention belongs to the field of turning, and relates to a contour turning method.

Background

At present, many enterprises are limited by the performance of equipment or the technical level of the enterprises, and the forming cutter is adopted for processing or splitting the simple outer contour or the eccentric circle into a plurality of procedures or climbing surface processing is adopted for processing at present. Thus, frequent molding knife purchase or increased product circulation period is caused, which is not favorable for cost saving. The ball cutter has long curved surface processing time and poor surface roughness, and the processing is usually carried out by polishing or grinding, for example, the splitting procedure uses a formed milling cutter to process the surface, the processing is not perfect by the cutter, and the period for customizing the cutter is long. The splitting procedure increases the product circulation period, and is also not beneficial to quality control.

CN103792880A discloses a numerical control system and method for increasing the turning speed and machining precision of a thread, which inputs a thread machining program into a numerical control device for controlling the operation of a tool of a machining machine; inputting a thread type into the numerical control device; calculating the tool retracting time of an entity movement axis X and an entity movement axis Z of the tool according to the thread type; planning the axial movement of the entity movement axis X and the entity movement axis Z according to the tool retracting time, and respectively generating an X-axis interpolation command and a Z-axis interpolation command after performing interpolation operation; integrating the X-axis interpolation command and the Z-axis interpolation command into a tool retracting program; the cutter setting and retracting procedure and the thread machining procedure are final machining procedures. The purposes of improving the processing efficiency, reducing the development cost and simplifying the production flow are achieved.

CN103260824A discloses a numerical control machine tool trajectory part processing program modification system, which includes: a human-machine interface unit (100) to which a tool path component machining program is input, the tool path component machining program being configured from one or more machining blocks that automatically execute a tool path for machining a workpiece with a tool of a numerically controlled machine tool; a numerical control kernel unit (200) that generates processing block information for each processing block by analyzing the part processing program input to the human-machine interface unit (100); a tool trajectory module unit (300) that sequentially calls the processing block information analyzed by the numerical control kernel unit (200), and corrects the continuous fast transfer processing block group so that a tool trajectory is reduced and a collision between the tool and the workpiece can be avoided when there is a continuous fast transfer processing block group that continuously includes processing blocks including a fast transfer command equal to or greater than a predetermined reference number; and a simulation unit (400) that simulates the part machining program for each of the machining blocks analyzed by the numerical control core unit (200).

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides the contour turning method, the requirement on the cutter is low, the cutter is generally a common standard cutter, and the machined surface has good roughness without subsequent procedures such as polishing, grinding and the like.

In order to achieve the technical effect, the invention adopts the following technical scheme:

the invention provides a contour turning method, which adopts a polar coordinate interpolation function of an automatic machine tool.

As a preferable technical scheme of the invention, the turning tool feed value of the automatic machine tool in the turning process is 2000-9000 mm/min, such as 3000mm/min, 4000mm/min, 5000mm/min, 6000mm/min, 7000mm/min or 8000mm/min, but the turning tool feed value is not limited to the enumerated numerical value, and other non-enumerated numerical values in the numerical value range are also applicable.

In a preferred embodiment of the present invention, the angle R of the cutting edge of the turning tool is 0.2 to 0.8, for example, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7 or 0.75, but is not limited to the above-mentioned numerical values, and other numerical values not listed in the numerical value range are also applicable.

As a preferable technical solution of the present invention, the machining method controls the automatic machine tool to complete machining by programming a machining program.

As a preferred technical solution of the present invention, the machining program first selects and positions a tool.

As a preferable technical scheme of the invention, after the tool is selected, the coordinate system setting, the feed amount setting and the turning initial position setting are sequentially carried out.

As a preferable aspect of the present invention, after the turning initial position is set, contour turning is started by polar interpolation.

Preferably, the profile turning is started and then the machining plane selection, the linear interpolation and the circular interpolation are performed in sequence.

Preferably, the linear interpolation has a feeding value of 1000-2000 mm/min, such as 1100mm/min, 1200mm/min, 1300mm/min, 1400mm/min, 1500mm/min, 1600mm/min, 1700mm/min, 1800mm/min or 1900mm/min, but not limited to the values listed, and other values not listed in the range of values are equally applicable.

Preferably, the arc interpolation is performed at a feed value of 3500-4500 mm/min, such as 3600mm/min, 3700mm/min, 3800mm/min, 3900mm/min, 4000mm/min, 4100mm/min, 4200mm/min, 4300mm/min or 4400mm/min, but not limited to the values listed, and other values not listed in the range are equally applicable.

As a preferable technical solution of the present invention, after the circular interpolation, a circular sentence is used to perform spiral feed.

Preferably, the spiral is run using circular interpolation.

Preferably, the circular interpolation is fed at 8000-10000 mm/min, such as 8200mm/min, 8500mm/min, 8800mm/min, 9000mm/min, 9200mm/min, 9500mm/min or 9800mm/min, but not limited to the values listed, and other values not listed in the range are equally applicable.

As a preferable embodiment of the present invention, the interpolation of the polar coordinates is stopped after the completion of the spiral feed.

Preferably, after the polar coordinate interpolation is completed, the coordinate system reduction and the main shaft indexing release are sequentially performed.

As a preferred technical solution of the present invention, the processing procedure includes sequentially performing:

selecting and positioning a cutter, setting a coordinate system, setting feed amount, setting a turning initial position, starting polar coordinate interpolation, selecting a machining plane, linearly interpolating, circularly interpolating, performing spiral feed by adopting a circular sentence, stopping polar coordinate interpolation, restoring the coordinate system and releasing the main shaft graduation.

Compared with the prior art, the invention has at least the following beneficial effects:

according to the machining method, the polar coordinate interpolation function in the turning center machine tool is utilized, the lathe tool is used for feeding cutting materials (the feeding value is F2000-9000 mm/min) to obtain the required size characteristics, the machining method has low requirements on the machining tool, the machining tool is generally a common standard tool, and the machined surface has good roughness and does not need subsequent procedures such as polishing, grinding and the like.

Drawings

FIG. 1 is a schematic structural view of a part produced in examples 1 to 3 of the present invention;

FIG. 2 is a schematic structural diagram of a part prepared in example 4 of the present invention.

The present invention is described in further detail below. The following examples are merely illustrative of the present invention and do not represent or limit the scope of the claims, which are defined by the claims.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:

the automatic machine tool used in the embodiment of the present invention is model number Cincom L20 (model 2M 10) in cycad.

Example 1

The present embodiment provides a contour turning method, where the machining method uses a polar interpolation function of an automatic machine tool, and the machining method controls the automatic machine tool to complete machining by programming a machining program, where the machining program includes, in sequence:

selecting and positioning a cutter, setting a coordinate system, setting feed amount, setting a turning initial position, starting polar coordinate interpolation, selecting a machining plane, linearly interpolating, circularly interpolating, performing spiral feed by adopting a circular sentence, stopping polar coordinate interpolation, restoring the coordinate system and releasing the main shaft graduation. The method specifically comprises the following steps:

T0300(DCET11T302R-JSFPR930)；

#10＝-0.5；

#22＝0.08；

M52；

G50W-6.0；

G98G1X[#814+1.0]Z-0.5F10000T3；

G1X14.2F1500；

G12.1E＝C；

G17；

G1X0.0C7.1F1500；

G3X-3.172C6.352R7.1F4000；

WHILE[#10LT11.0]DO1；

G3X-3.172C-6.352Z[#10+[#22*0.346]]R7.9F2500；

G3X3.172C-6.352Z[#10+[#22*0.5]]R7.1；

G3X3.172C6.352Z[#10+[#22*0.846]]R7.9；

G3X-3.172C6.352Z[#10+[#22*1.0]]R7.1；

#10＝#10+#22；

END1；

G13.1；

G18；

G0X40.0T0；

G50W6.0；

M20.

the structure of the machined part is shown in fig. 1, and the surface roughness thereof is about ra0.6, and the obtained profile dimension is poor.

Example 2

The present embodiment provides a contour turning method, where the machining method uses a polar interpolation function of an automatic machine tool, and the machining method controls the automatic machine tool to complete machining by programming a machining program, where the machining program includes, in sequence:

selecting and positioning a cutter, setting a coordinate system, setting feed amount, setting a turning initial position, starting polar coordinate interpolation, selecting a machining plane, linearly interpolating, circularly interpolating, performing spiral feed by adopting a circular sentence, stopping polar coordinate interpolation, restoring the coordinate system and releasing the main shaft graduation. The method specifically comprises the following steps:

T0300(DCET11T302R-JSFPR930)；

#10＝-0.5；

#22＝0.08；

M52；

G50W-6.0；

G98G1X[#814+1.0]Z-0.5F10000T3；

G1X14.2F1500；

G12.1E＝C；

G17；

G1X0.0C7.1F1000；

G3X-3.172C6.352R7.1F3500；

WHILE[#10LT11.0]DO1；

G3X-3.172C-6.352Z[#10+[#22*0.346]]R7.9F4500；

G3X3.172C-6.352Z[#10+[#22*0.5]]R7.1；

G3X3.172C6.352Z[#10+[#22*0.846]]R7.9；

G3X-3.172C6.352Z[#10+[#22*1.0]]R7.1；

#10＝#10+#22；

END1；

G13.1；

G18；

G0X40.0T0；

G50W6.0；

M20.

the structure of the machined part is shown in fig. 1, the surface roughness of the machined part is about ra0.6, and the limit value of the obtained contour dimension is obtained.

Example 3

The present embodiment provides a contour turning method, where the machining method uses a polar interpolation function of an automatic machine tool, and the machining method controls the automatic machine tool to complete machining by programming a machining program, where the machining program includes, in sequence:

selecting and positioning a cutter, setting a coordinate system, setting feed amount, setting a turning initial position, starting polar coordinate interpolation, selecting a machining plane, linearly interpolating, circularly interpolating, performing spiral feed by adopting a circular sentence, stopping polar coordinate interpolation, restoring the coordinate system and releasing the main shaft graduation. The method specifically comprises the following steps:

T0300(DCET11T302R-JSFPR930)；

#10＝-0.5；

#22＝0.08；

M52；

G50W-6.0；

G98G1X[#814+1.0]Z-0.5F10000T3；

G1X14.2F1500；

G12.1E＝C；

G17；

G1X0.0C7.1F2000；

G3X-3.172C6.352R7.1F4500；

WHILE[#10LT11.0]DO1；

G3X-3.172C-6.352Z[#10+[#22*0.346]]R7.9F8000；

G3X3.172C-6.352Z[#10+[#22*0.5]]R7.1；

G3X3.172C6.352Z[#10+[#22*0.846]]R7.9；

G3X-3.172C6.352Z[#10+[#22*1.0]]R7.1；

#10＝#10+#22；

END1；

G13.1；

G18；

G0X40.0T0；

G50W6.0；

M20.

the structure of the machined part is shown in fig. 1, the surface roughness of the machined part is about Ra0.6, and the obtained contour dimension exceeds a tolerance range.

Example 4

The present embodiment provides a contour turning method, where the machining method uses a polar interpolation function of an automatic machine tool, and the machining method controls the automatic machine tool to complete machining by programming a machining program, where the machining program includes, in sequence:

selecting and positioning a cutter, setting a coordinate system, setting feed amount, setting a turning initial position, starting polar coordinate interpolation, selecting a machining plane, linearly interpolating, circularly interpolating, performing spiral feed by adopting a circular sentence, stopping polar coordinate interpolation, restoring the coordinate system and releasing the main shaft graduation. The method specifically comprises the following steps:

M18C90.0

T0300(DCET11T302FR-JSFPR930)

#10＝-0.5

#22＝0.08

M52

G50W-6.0

G98G1X[#814+1.0]Z-0.5F10000T3

G1X14.2F500

G12.1E＝C

G17

G1X0.0C7.1F1500

G3X-3.172C6.352R7.1F4000

WHILE[#10LT11.0]DO1

G3X-3.172C-6.352Z[#10+[#22*0.346]]R7.9F9000

G3X3.172C-6.352Z[#10+[#22*0.5]]R7.1

G3X3.172C6.352Z[#10+[#22*0.846]]R7.9

G3X-3.172C6.352Z[#10+[#22*1.0]]R7.1

#10＝#10+#22

END1

G13.1

G18

G0X40.0T0

G50W6.0

the structure of the machined part is shown in fig. 2.

The applicant declares that the present invention illustrates the detailed structural features of the present invention through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.