CN109759894A - A kind of numerical-control processing method of brake head - Google Patents
A kind of numerical-control processing method of brake head Download PDFInfo
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- CN109759894A CN109759894A CN201811407128.4A CN201811407128A CN109759894A CN 109759894 A CN109759894 A CN 109759894A CN 201811407128 A CN201811407128 A CN 201811407128A CN 109759894 A CN109759894 A CN 109759894A
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- brake head
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Abstract
The present invention relates to a kind of numerical-control processing methods of brake head, the difference is that: the nc program of brake head the following steps are included: step a), be input in the storage unit of lathe by it；X, Y, the Z coordinate value of step b), setting working origin in the workpiece coordinate system of lathe；Step c), according to the nc program in step a) by work pieces process be brake head, then determine brake head in process because deformation caused by profile variation position and offset dimensions；Step d), the amendment according to identified profile variation in machining locus and step c), to the profile variation progress opposite direction of brake head.Machined parameters of the present invention are controllable, and stability is good, and machining locus can be adjusted accurately, it is easy to accomplish the accurate control to process, this method is flexible high, adapts to wide.
Description
Technical field
The present invention relates to the numerical control processing field of part, especially a kind of numerical-control processing method of brake head.
Background technique
Brake head is the braking execution unit of rail traffic middle orbit vehicle, is most complicated one of the part of operating condition.Wherein
Double brake heads design to adapt to the complex work environment in mountain area and guarantee the safe effect of brake, and double brake heads can be with
Two brake shoes are installed simultaneously to generate double brake deceleration torque when guaranteeing brake.Design functionally determines the brake head
Structure size given oneself airs one times than common brake shoe, increase the difficulty of processing of the part.Due to the length dimension of brake head
Increase so that work pieces process has been become larger one times.The processing method of brake head can be there are two types of mode: wire cutting and numerical control
Forming, linear cutter controls better than numerical control processing in terms of work pieces process deformation, but the process-cycle is long, is processed into
This height, processing efficiency is low.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology, provides a kind of numerical-control processing method of brake head, processing
Parameter is controllable, and stability is good, and machining locus can be adjusted accurately, it is easy to accomplish the accurate control to process, this method
It is flexible high, it adapts to wide.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of numerical-control processing method of brake head, different
Place is comprising following steps:
Step a), the nc program of brake head is input in the storage unit of lathe；
Step b), clamping workpiece to be processed is positioned to the brake head tooling of lathe, then determines the coordinate of workpiece
It is X, the coordinate origin value of Y, Z, and working origin is set in the workpiece coordinate system of lathe according to the coordinate origin numerical value
X, Y, Z coordinate value；
The work pieces process is brake head by step c), the nc program according to step a), is then measured
X, Y, Z actual coordinate value of each profile of the brake head out, then by the ruler in measured data and brake head design drawing
It is very little to be compared, determine position and deviation size of the brake head in process because of profile variation caused by deforming；
Step d), the profile variation progress according to identified profile variation in machining locus and step c), to brake head
The amendment of opposite direction forms revised machining locus, regenerates numerically controlled machining programme according to the revised machining locus
Sequence；
Step e), other workpiece to be processed are processed to qualified parts according to the nc program in step d).
By above technical scheme, the specific forming method of the nc program of brake head in the step a) are as follows: certainly
In dynamic programming software, the model establishment of brake head is generated into the nc program, the model of the brake head is with described
The theoretical model that shape and size in design drawing are established in three-dimensional software, the automatic programming software are to 3 D stereo
Model is soft come the computer for driving lathe to process workpiece by the language that layout generation numerically controlled processing equipment can identify
Part.
By above technical scheme, measured data are compared with the size in brake head design drawing in the step c)
Specific steps are as follows: the then Model Measured that brake head is first re-established according to the actual coordinate value compares the institute re-established
The theoretical mould that the Model Measured and the shape and size in the design drawing for stating brake head are established in three-dimensional software
Type.
By above technical scheme, the step c) the actual coordinate value and brake head design drawing in CAD software
Theoretical coordinate value in paper.
By above technical scheme, in the step d), after regenerating nc program, with the number regenerated
Control the nc program in processing program covering step a).
By above technical scheme, the brake head is double brake heads.
Compare the prior art, beneficial features of the invention are as follows: the numerical-control processing method of the brake head carries out process data
The machining locus of sunykatuib analysis, brake head can be adjusted accurately, and this method is flexible high, be adapted to wide；Using data control
The machining accuracy of machining tool, lathe is high, and machined parameters are controllable, and stability is good, it is easy to accomplish the accurate control to process；
Suitable for processing the part of long span structure, the precision and surface quality of part ensure that, and there is very high flexibility.
Detailed description of the invention
Fig. 1 is brake head structure schematic diagram in the embodiment of the present invention.
Specific embodiment
Below by specific embodiment, invention is further described in detail.
The numerical-control processing method of brake head of the embodiment of the present invention, it is especially double suitable for processing the part of long span structure
Brake head.Method includes the following steps:
Step a), in automatic programming software, the establishment of the model of brake head is generated into nc program, the automatic volume
Journey software is to generate the language that numerically controlled processing equipment can identify by layout to three-dimensional stereo model to drive lathe to workpiece
The computer software processed, the model of the brake head are to be built in three-dimensional software with the shape and size in design drawing
Then the nc program of brake head is input in the memory of lathe by vertical three-dimensional model, and by process tool and use
It is installed on lathe in the clamping tooling of clamping workpiece.
Step b), clamping workpiece to be processed positioned to the brake head tooling of lathe again, then determines the seat of workpiece
The coordinate origin value of mark system X, Y, Z, and working origin is set in the workpiece coordinate system of lathe according to the coordinate origin numerical value
X, Y, Z coordinate value.
Work pieces process is brake head by step c), the nc program according to step a), then measures lock
X, Y, Z actual coordinate value of each profile of Wa Tuo, the Model Measured of brake head are re-established further according to the actual coordinate value, so
Compare in CAD software afterwards the brake head re-established Model Measured and the shape in the design drawing and
The theoretical model that size is established in three-dimensional software determines brake head in process because of the position of profile variation caused by deforming
It sets and deviation size；The table if the gross data position that the actual coordinate value of X, Y, Z of corresponding position deviate in design drawing
It is bright to occur deformation at this；The distance of deviation is bigger, then shows to deform at this more severe.
Step d), according to identified profile variation in the machining locus and step c) of process tool, to the wheel of brake head
Wide deviation carries out the amendment of opposite direction, the machining locus of revised process tool is formed, according to the revised processing knife
The machining locus of tool regenerates nc program, and in the nc program covering step a) regenerated
The nc program；The processing trace curve of revised process tool should be continuous with the curve that is attached thereto, and mutually not
It influences, keeps mutually indepedent between each contour curve.
Step e), other workpiece to be processed are processed to qualified parts according to the nc program in step d).
Referring to FIG. 1, brake head is generally curved in one embodiment of the present of invention, there is the convex arc being oppositely arranged
Face 2 and cancave cambered surface 1, the cancave cambered surface 1 are in symmetry shape about its center line a, are symmetrically offered on the surface 101 of the cancave cambered surface
Two slot structures 3, each slot structure 3 and the junction on the cancave cambered surface surface 101 offer the first rounded corner respectively, respectively
The slot bottom 301 of the slot structure and the junction of cell wall 302 offer the second rounded corner respectively, convex close to its on the brake head
A pilot hole 4 is offered at cambered surface 2, the center of circle c of the pilot hole 4 is located on the center line a of the cancave cambered surface.The present invention is real
The processing that cancave cambered surface is only exemplified by example is applied, when processing, using the center of circle c of the pilot hole as coordinate origin, and along the cancave cambered surface
The cancave cambered surface 1 is divided into nine sections to the direction its center line a by end b, wherein first segment be cancave cambered surface end A1 point at extremely
At the junction A2 point of cancave cambered surface surface 101 and the first rounded corner 5, second segment is at A2 point to the first rounded corner 5 and slot structure
302 junction A3 point of cell wall at, third section is at A3 point to the cell wall 302 of slot structure and the junction A4 of the second rounded corner 6
At point, the 4th section is to the second rounded corner 6 at A4 point at the 301 junction A5 point of slot bottom of slot structure, and the 5th section is at A5 point
To slot structure slot bottom 301 and another second rounded corner 7 junction A6 point at, the 6th section at A6 point to another second rounding
At the 302 junction A7 point of cell wall of angle 7 and slot structure, the 7th section is fallen for the cell wall 302 at A7 point to slot structure with another first
At the junction A8 point of fillet 8, the 8th section is at A8 point to the junction A9 of another first rounded corner 8 and cancave cambered surface surface 101
Point place, the 9th section at A9 point at the point of intersection A10 point of cancave cambered surface surface 101 and the center line c of cancave cambered surface.
The graph function of machining locus described in the step d) is piecewise function:
Wherein: Y and X is variable of the work pieces process track in two reference axis of coordinate system respectively；A: function constant system
Number；B: function constant factor；C: function constant factor；R, r1, r2, r3, r4, a1, b1, c1: function constant value.
The graph function of the machining locus of revised process tool is piecewise function in step d):
Wherein: Y and X is variable of the work pieces process track in two reference axis of coordinate system respectively；A: function constant system
Number；B: function constant factor；C: function constant factor；R, r1, r2, r3, r4, a1, b1, c1: function constant value；δ: deformation amendment
Amount；δ1、δ2、δ3、δ4、δ5: deformation correction amount.
Vertical numerical control machining center is used in the embodiment of the present invention, lathe has three-shaft linkage function.It is different when processing
Cutter switches under the control of nc program, and processes to workpiece, differently contoured part of each cutter to workpiece
Cutting-in, the machined parameters such as feeding speed and deflection all obtain fixed setting in a program, guarantee the processing of each workpiece
State all will not unanimously change, so that it is guaranteed that not changing because deflection caused by processing can be fixed.
The above content is combine specific embodiment to the further description of the invention done, and it cannot be said that this hair
Bright specific implementation is only limited to these instructions.For the those of ordinary skill of the technical field belonging to the present invention, not
Under the premise of being detached from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to guarantor of the invention
Protect range.
Claims (6)
1. a kind of numerical-control processing method of brake head, it is characterised in that: itself the following steps are included:
Step a), the nc program of brake head is input in the storage unit of lathe；
Step b), clamping workpiece to be processed is positioned to the brake head tooling of lathe, then determines the coordinate system X of workpiece,
The coordinate origin value of Y, Z, and X, Y, the Z of working origin in the workpiece coordinate system of lathe are set according to the coordinate origin numerical value
Coordinate value；
The work pieces process is brake head by step c), the nc program according to step a), then measures institute
State X, Y, Z actual coordinate value of each profile of brake head, then by the size in measured data and brake head design drawing into
Row compares, and determines position and deviation size of the brake head in process because of profile variation caused by deforming；
Step d), according to identified profile variation in machining locus and step c), negative side is carried out to the profile variation of brake head
To amendment, form revised machining locus, nc program regenerated according to the revised machining locus；
Step e), other workpiece to be processed are processed to qualified parts according to the nc program in step d).
2. the numerical-control processing method of brake head as described in claim 1, it is characterised in that: the number of brake head in the step a)
Control the specific forming method of processing program are as follows: in automatic programming software, the model establishment of brake head is generated into the numerical control and is added
Engineering sequence, the model of the brake head are the theoretical mould established in three-dimensional software with the shape and size in the design drawing
Type, the automatic programming software are to generate the language that numerically controlled processing equipment can identify by layout to three-dimensional stereo model to drive
The computer software that motivation bed processes workpiece.
3. the numerical-control processing method of brake head as claimed in claim 2, it is characterised in that: measured number in the step c)
According to the specific steps compared with the size in brake head design drawing are as follows: first re-establish brake head according to the actual coordinate value
Model Measured, then compare the Model Measured and the shape in the design drawing of the brake head re-established
The theoretical model established in three-dimensional software with size.
4. the numerical-control processing method of brake head as described in claim 1, it is characterised in that: the step c) is in CAD software
Compare the theoretical coordinate value in the actual coordinate value and brake head design drawing.
5. the numerical-control processing method of brake head as described in claim 1, it is characterised in that: in the step d), regenerate
After nc program, with the nc program in the nc program covering step a) regenerated.
6. such as the numerical-control processing method of brake head described in any one of claim 1 to 5, it is characterised in that: the brake head is
Double brake heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407128.4A CN109759894A (en) | 2018-11-23 | 2018-11-23 | A kind of numerical-control processing method of brake head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811407128.4A CN109759894A (en) | 2018-11-23 | 2018-11-23 | A kind of numerical-control processing method of brake head |
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| CN109759894A true CN109759894A (en) | 2019-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811407128.4A Pending CN109759894A (en) | 2018-11-23 | 2018-11-23 | A kind of numerical-control processing method of brake head |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449750A (en) * | 2019-08-09 | 2019-11-15 | 上海发那科机器人有限公司 | A kind of round tube cutting process method and system based on six-shaft industrial robot |
| CN110900245A (en) * | 2019-12-05 | 2020-03-24 | 深圳市正兴源科技有限公司 | Processing method for simultaneously processing multiple long inclined roofs |
| CN110900246A (en) * | 2019-12-05 | 2020-03-24 | 深圳市正兴源科技有限公司 | Machining method for simultaneously machining multiple inclined ejector heads |
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|---|---|---|---|---|
| CN201432694Y (en) * | 2008-02-20 | 2010-03-31 | 塔绰瓦工卡公司 | Railway vehicle brake head |
| CN103995496A (en) * | 2014-04-28 | 2014-08-20 | 南京航空航天大学 | Aircraft part high-precision matching component processing method based on digital measurement |
| CN104759942A (en) * | 2015-04-22 | 2015-07-08 | 华中科技大学 | Online milling deformation measurement and complementation machining method for thin-walled part |
| CN105242637A (en) * | 2015-10-27 | 2016-01-13 | 华中科技大学 | Aviation thin-wall blade compensation processing method |
| CN108356828A (en) * | 2018-01-30 | 2018-08-03 | 深圳市圆梦精密技术研究院 | Workpiece coordinate system modification method |
-
2018
- 2018-11-23 CN CN201811407128.4A patent/CN109759894A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201432694Y (en) * | 2008-02-20 | 2010-03-31 | 塔绰瓦工卡公司 | Railway vehicle brake head |
| CN103995496A (en) * | 2014-04-28 | 2014-08-20 | 南京航空航天大学 | Aircraft part high-precision matching component processing method based on digital measurement |
| CN104759942A (en) * | 2015-04-22 | 2015-07-08 | 华中科技大学 | Online milling deformation measurement and complementation machining method for thin-walled part |
| CN105242637A (en) * | 2015-10-27 | 2016-01-13 | 华中科技大学 | Aviation thin-wall blade compensation processing method |
| CN108356828A (en) * | 2018-01-30 | 2018-08-03 | 深圳市圆梦精密技术研究院 | Workpiece coordinate system modification method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449750A (en) * | 2019-08-09 | 2019-11-15 | 上海发那科机器人有限公司 | A kind of round tube cutting process method and system based on six-shaft industrial robot |
| CN110900245A (en) * | 2019-12-05 | 2020-03-24 | 深圳市正兴源科技有限公司 | Processing method for simultaneously processing multiple long inclined roofs |
| CN110900246A (en) * | 2019-12-05 | 2020-03-24 | 深圳市正兴源科技有限公司 | Machining method for simultaneously machining multiple inclined ejector heads |
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Application publication date: 20190517 |