CN115007921B - Method for improving efficiency of rough machining of inner hole and outer circle surface of large cone - Google Patents
Method for improving efficiency of rough machining of inner hole and outer circle surface of large cone Download PDFInfo
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- CN115007921B CN115007921B CN202210689345.7A CN202210689345A CN115007921B CN 115007921 B CN115007921 B CN 115007921B CN 202210689345 A CN202210689345 A CN 202210689345A CN 115007921 B CN115007921 B CN 115007921B
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- 238000003754 machining Methods 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000003801 milling Methods 0.000 claims description 36
- 238000012938 design process Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 230000033772 system development Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 3
- 238000005452 bending Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
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Abstract
The invention provides a method for improving the rough machining efficiency of the inner hole and the outer circle surface of a large cone, which comprises an inner support ring, wherein a support locking mechanism matched with a central hole of a cylinder sleeve is arranged and installed on the outer circumference of the inner support ring; an arc-shaped guide plate is fixed at the top end of the inner support ring through a vertical plate; the arc top end of the arc-shaped guide plate is matched with the arc-shaped inner wall of the reinforced back ring to be assembled; the back ring is characterized by further comprising a ring sleeve for hoisting the reinforcing back ring, wherein the ring sleeve adopts an opening structure, a connecting lug is formed by bending the opening part, and a hanging hole is formed in the connecting lug. The method solves the problems of reworking and potential safety hazard caused by adopting a vertical installation mode between the cylinder sleeve and the reinforced back ring, greatly shortens the installation time, refuses the repeated construction period, achieves the purposes and effects of greatly improving the production efficiency and safety, and can be popularized to the mode improvement of the general large-scale vertical installation.
Description
Technical Field
The invention relates to an efficiency improving method for rough machining of the inner hole and the outer circle surface of a large-sized cone, and belongs to the technical field of cone machining.
Background
In the cylinder workpiece rough machining mode, workpieces are generally integrated and assembled on a vertical lathe to rough the surfaces of the inner hole and the outer circle, and the coaxiality of the inner hole and the outer circle is controlled by a rotating workbench of the vertical lathe in the machining process. In practical production, the shape and size of the workpiece are greatly changed, and particularly when the workpiece is oversized and the workpiece is not cylindrical, the rough machining method cannot be effectively applied. Meanwhile, the rough machining mode is low in machining process efficiency, long in working period and capable of limiting the placement positions of parts, namely the rotation center of the parts and the center of the rotary workbench are required to be adjusted concentrically, the operation process is complex, and the large-scale parts which can be up to several tons or even tens of tons are difficult to adjust to meet machining requirements in the large-scale production process.
Disclosure of Invention
The invention aims to optimize the prior rough machining technology of the inner hole and the outer circle surface of a cone-shaped workpiece, cancel the traditional machining operation mode of a vertical lathe for integrally assembling the upper half and the lower half of the cylinder, and adopt a planer type numerical control lathe to load a milling cutter to carry out milling machining on the upper half and the lower half of the cone-shaped surface of the workpiece. The part position placing process is easier, the workpiece types with different shapes can be processed, meanwhile, the surface rough machining time is greatly shortened, and the machining efficiency of a rough machining link is improved.
In order to achieve the technical characteristics, the aim of the invention is realized in the following way: a method for improving the rough machining efficiency of the inner hole and the outer circle surface of a large cone cylinder comprises the following steps:
step 1: programming a part machining program according to the main program module and storing the part machining program in a machine tool;
step 2: the part is split into an upper half workbench and a lower half workbench at any position, so that the half surface of the workpiece is ensured to be horizontally parallel to the workbench;
step 3: calculating the change range of the rolling radius and the number of times of the milling of the cutter according to the effective machining sizes of the rolling cutter and the different taper sections of the taper barrel;
step 4: and calling a part machining program, and machining a finished part according to the program.
In the step 1, a planer type milling numerical control lathe is adopted for the machine tool, and a conical cylinder planer type milling and hobbing motion model is established:
the hobbing cutter head automatically calculates the hobbing radius according to the taper of the cone through a motion model, so that the hobbing cutter head is ensured to do semicircular arc motion along the inner hole surface or the outer surface of the cone; and meanwhile, the number of times of milling in the same taper section is calculated by utilizing the taper size and the effective machining length of the milling cutter head, so that the milling of the taper section combined cone barrel workpiece is realized.
The design process of the main program module in the step 1 is as follows:
step 1.1, setting a machine tool machining reference;
step 1.2, inputting parameters of a taper hole machining starting point and a taper hole machining end point;
inputting the machining parameters of a hobbing cutter head;
step 1.3, calculating the number of times of milling theoretical processing;
step 1.4, judging whether the theoretical machining times in the step 1.3 are integers or not, and rounding the integers;
step 1.5, calculating the theoretical cutting quantity of each cutter;
step 1.6, calculating the hobbing radius of each cutter;
step 1.7, judging whether all machining times are finished; if yes, ending, otherwise, returning to the step 1.2 after assigning, and inputting the parameters of the starting point and the finishing point of the taper hole machining.
The specific parameter setting process in the step 1 is as follows:
dividing a cone to be processed into a plurality of sections according to the taper, selecting cone hole sections with the same taper, and taking two ends A, B of the same taper section as a processing starting point and a processing end point, wherein a hobbing cutter head moves along the AB section; determining the machining width of the selected cutter as R 4 The ordinate of the starting point of the taper hole is R 0 =b, the ordinate of the taper hole processing end point is R 1 D, thereby determining the cutter hobbing distance range as R 3 ＝R 0 -R 1 The method comprises the steps of carrying out a first treatment on the surface of the The rough machining times R are obtained through the machining distance and the machining width of the cutter 5 ＝R 3 /R 4 But the result of the calculation may not be an integer, for R 5 Rounding and finally processing times R 6 Adding one to the rounding value, and simultaneously calculating the final downward offset distance of the cutter in the machining process as R 7 ＝R 3 /R 6 The radius change range of the milling cutter is used for being positioned at the radius R of the processing starting point 8 And a machining end point radius R 9 Calculating the coordinate offset value of each hobbing of the cutter as the following formula R 10 For each cutter offset of the milling radius, the next milling starting point positioning transverse offset coordinate is R 11 The longitudinal offset coordinate is R 10 ＝R 0 -R 7 ：
The running times of the program reach R 6 And the program running end point is defined.
The design process of the parameter input protection module comprises the following steps:
because the processing starting point and the processing end point are set by an operator, in order to prevent unnecessary harm caused by artificial input deviation, the program section establishes an input protection module to judge whether the milling radius and the processing distance are in a specified range, and if not, the processing is stopped and the processing enters a dead cycle.
Based on Siemens 840D numerical control system development, the key code segments of the program parameter input protection module are as follows:
IF r100> = 200GOTOF pos_930 determines IF the input tool radius is safe;
POS_823:MSG("DAO JU BAN JING BU DUI")；
GOTOB POS_823 enters a dead cycle;
POS_930:
IF 0< (R0-R1) < = R2 gotf pos_1 to determine IF the machining is within the taper range;
GOTOB POS_823 enters a dead cycle;
POS_1:。
the invention has the following beneficial effects:
through the practical application of the invention, the limitation of the placement position of the part on the workbench is relieved, and the half surface and the workbench are only required to be horizontally parallel at any position of the part. The method solves the size limitation of large-scale workpieces, and can utilize the programming advantage of a numerical control machine tool to make the shapes of the processed parts more diversified. Meanwhile, the processing period of the product is greatly shortened, and the production efficiency of the rough processing link is improved.
Drawings
The invention is further described below with reference to the drawings and examples.
Fig. 1 is a front view of a cone to be machined in accordance with the present invention.
Fig. 2 shows the milling rough machining principle of the gantry of the invention.
FIG. 3 is a flow chart of the programming of the present invention.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-3, a method for improving the rough machining effect of the inner hole and the outer circle surface of a large cone cylinder comprises the following steps:
step 1: programming a part machining program according to the main program module and storing the part machining program in a machine tool;
step 2: the part is split into an upper half workbench and a lower half workbench at any position, so that the half surface of the workpiece is ensured to be horizontally parallel to the workbench;
step 3: calculating the change range of the rolling radius and the number of times of the milling of the cutter according to the effective machining sizes of the rolling cutter and the different taper sections of the taper barrel;
step 4: and calling a part machining program, and machining a finished part according to the program.
Example 2:
in the step 1, a planer type milling numerical control lathe is adopted for the machine tool, and a conical cylinder planer type milling and hobbing motion model is established:
the hobbing cutter head automatically calculates the hobbing radius according to the taper of the cone through a motion model, so that the hobbing cutter head is ensured to do semicircular arc motion along the inner hole surface or the outer surface of the cone; and meanwhile, the number of times of milling in the same taper section is calculated by utilizing the taper size and the effective machining length of the milling cutter head, so that the milling of the taper section combined cone barrel workpiece is realized.
Example 3:
the design process of the main program module in the step 1 is as follows:
step 1.1, setting a machine tool machining reference;
step 1.2, inputting parameters of a taper hole machining starting point and a taper hole machining end point;
inputting the machining parameters of a hobbing cutter head;
step 1.3, calculating the number of times of milling theoretical processing;
step 1.4, judging whether the theoretical machining times in the step 1.3 are integers or not, and rounding the integers;
step 1.5, calculating the theoretical cutting quantity of each cutter;
step 1.6, calculating the hobbing radius of each cutter;
step 1.7, judging whether all machining times are finished; if yes, ending, otherwise, returning to the step 1.2 after assigning, and inputting the parameters of the starting point and the finishing point of the taper hole machining.
Example 4:
the specific parameter setting process in the step 1 is as follows:
taking the machining (3) section of taper hole as an example, as shown in figures 1 and 2. The hobbing cutter head moves along the AB section, and two A, B points are a machining starting point and a machining end point. Dividing a cone to be processed into a plurality of sections according to the taper, selecting cone hole sections with the same taper, and taking two ends A, B of the same taper section as a processing starting point and a processing end point, wherein a hobbing cutter head moves along the AB section; determining the machining width of the selected cutter as R 4 The ordinate of the starting point of the taper hole is R 0 =b, the ordinate of the taper hole processing end point is R 1 D, thereby determining the cutter hobbing distance range as R 3 ＝R 0 -R 1 The method comprises the steps of carrying out a first treatment on the surface of the The rough machining times R are obtained through the machining distance and the machining width of the cutter 5 ＝R 3 /R 4 But the result of the calculation may not be an integer, for R 5 Rounding and finally processing times R 6 Adding one to the rounding value, and simultaneously calculating the final downward offset distance of the cutter in the machining process as R 7 ＝R 3 /R 6 The radius change range of the milling cutter is used for being positioned at the radius R of the processing starting point 8 And a machining end point radius R 9 Calculating the coordinate offset value of each hobbing of the cutter as the following formula R 10 For each cutter offset of the milling radius, the next milling starting point positioning transverse offset coordinate is R 11 The longitudinal offset coordinate is R 10 ＝R 0 -R 7 ：
The running times of the program reach R 6 And the program running end point is defined.
Example 5:
the design process of the parameter input protection module comprises the following steps:
because the processing starting point and the processing end point are set by an operator, in order to prevent unnecessary harm caused by artificial input deviation, the program section establishes an input protection module to judge whether the milling radius and the processing distance are in a specified range, and if not, the processing is stopped and the processing enters a dead cycle.
Based on Siemens 840D numerical control system development, the key code segments of the program parameter input protection module are as follows:
IF r100> = 200GOTOF pos_930 determines IF the input tool radius is safe;
POS_823:MSG("DAO JU BAN JING BU DUI")；
GOTOB POS_823 enters a dead cycle;
POS_930:
IF 0< (R0-R1) < = R2 gotf pos_1 to determine IF the machining is within the taper range;
GOTOB POS_823 enters a dead cycle;
POS_1:。
Claims (6)
1. the method for improving the rough machining efficiency of the inner hole and the outer circle surface of the large cone is characterized by comprising the following steps:
step 1: programming a part machining program according to the main program module and storing the part machining program in a machine tool;
step 2: the part is split into an upper half workbench and a lower half workbench at any position, so that the half surface of the workpiece is ensured to be horizontally parallel to the workbench;
step 3: calculating the change range of the rolling radius and the number of times of the milling of the cutter according to the effective machining sizes of the rolling cutter and the different taper sections of the taper barrel;
step 4: and calling a part machining program, and machining a finished part according to the program.
2. The method for improving the rough machining efficiency of the inner hole and the outer circle surface of the large cone is characterized in that a machine tool in the step 1 adopts a planer milling numerical control lathe, and a cone planer milling and hobbing motion model is established:
the hobbing cutter head automatically calculates the hobbing radius according to the taper of the cone through a motion model, so that the hobbing cutter head is ensured to do semicircular arc motion along the inner hole surface or the outer surface of the cone; and meanwhile, the number of times of milling in the same taper section is calculated by utilizing the taper size and the effective machining length of the milling cutter head, so that the milling of the taper section combined cone barrel workpiece is realized.
3. The method for improving the rough machining efficiency of the inner hole and the outer circle surface of the large cone barrel according to claim 1, wherein the design process of the main program module in the step 1 is as follows:
step 1.1, setting a machine tool machining reference;
step 1.2, inputting parameters of a taper hole machining starting point and a taper hole machining end point;
inputting the machining parameters of a hobbing cutter head;
step 1.3, calculating the number of times of milling theoretical processing;
step 1.4, judging whether the theoretical machining times in the step 1.3 are integers or not, and rounding the integers;
step 1.5, calculating the theoretical cutting quantity of each cutter;
step 1.6, calculating the hobbing radius of each cutter;
step 1.7, judging whether all machining times are finished; if yes, ending, otherwise, returning to the step 1.2 after assigning, and inputting the parameters of the starting point and the finishing point of the taper hole machining.
4. The method for improving the rough machining efficiency of the inner hole and the outer circle surface of the large cone barrel according to claim 3, wherein the specific parameter setting process in the step 1 is as follows:
dividing a cone to be processed into a plurality of sections according to the taper, selecting cone hole sections with the same taper, and taking two ends A, B of the same taper section as a processing starting point and a processing end point, wherein a hobbing cutter head moves along the AB section; determining the machining width of the selected cutter as R 4 The ordinate of the starting point of the taper hole is R 0 =b, the ordinate of the taper hole processing end point is R 1 D, thereby determining the cutter hobbing distance range as R 3 =R 0 -R 1 The method comprises the steps of carrying out a first treatment on the surface of the The rough machining times R are obtained through the machining distance and the machining width of the cutter 5 =R 3 /R 4 When the calculation result is not an integer, for R 5 Rounding and finally processing times R 6 Adding one for the rounding value, and simultaneously calculating the direction of a cutter in the processing processThe final offset distance is R 7 =R 3 /R 6 The radius change range of the milling cutter is used for being positioned at the radius R of the processing starting point 8 And a machining end point radius R 9 The basic requirement is that the coordinate offset value of each hobbing of the cutter is calculated as the following formula R 10 For each cutter offset of the milling radius, the next milling starting point positioning transverse offset coordinate is R 11 The longitudinal offset coordinate is R 10 =R 0 -R 7 ：
The running times of the program reach R 6 And the program running end point is defined.
5. The method for improving the rough machining efficiency of the inner hole and the outer circle surface of the large cone barrel according to claim 1, wherein the design process of the parameter input protection module is as follows:
because the processing starting point and the processing end point are set by an operator, in order to prevent unnecessary harm caused by artificial input deviation, the program section establishes an input protection module to judge whether the milling radius and the processing distance are in a specified range, and if not, the processing is stopped and the processing enters a dead cycle.
6. The method for improving the rough machining efficiency of the inner hole and the outer circle surface of the large cone is characterized in that based on Siemens 840D numerical control system development, key code sections of a program parameter input protection module are as follows:
IF R100> = 200GOTOF POS_930 determines IF the input tool radius is safe;
POS_823:MSG("DAO JU BAN JING BU DUI ")；
GOTOB POS_823 enters a dead cycle;
POS_930:
IF 0< (R0-R1) < = R2 gotf pos_1 to determine IF the machining is within the taper range;
GOTOB POS_823 enters a dead cycle;
POS_1:。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210689345.7A CN115007921B (en) | 2022-06-17 | 2022-06-17 | Method for improving efficiency of rough machining of inner hole and outer circle surface of large cone |
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| CN202210689345.7A CN115007921B (en) | 2022-06-17 | 2022-06-17 | Method for improving efficiency of rough machining of inner hole and outer circle surface of large cone |
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| CN115007921A CN115007921A (en) | 2022-09-06 |
| CN115007921B true CN115007921B (en) | 2024-02-09 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425622A (en) * | 2016-10-30 | 2017-02-22 | 山西汾西重工有限责任公司 | Machining tool for conical curved-surface cylinder |
| CN110497147A (en) * | 2018-05-16 | 2019-11-26 | 安阳市恒威石化设备有限责任公司 | The disposable processing method of the inner hole of monoblock type bowl |
| CN111673152A (en) * | 2020-05-26 | 2020-09-18 | 上海航天精密机械研究所 | Manufacturing method of cabin body suitable for lunar exploration orbital vehicle |
| CN111823036A (en) * | 2020-07-17 | 2020-10-27 | 大连理工大学 | Rapid positioning device and method for thin-wall conical cylinder |
| CN111822764A (en) * | 2020-07-17 | 2020-10-27 | 大连理工大学 | Device and method for machining and measuring window of conical cylinder |
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2022
- 2022-06-17 CN CN202210689345.7A patent/CN115007921B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425622A (en) * | 2016-10-30 | 2017-02-22 | 山西汾西重工有限责任公司 | Machining tool for conical curved-surface cylinder |
| CN110497147A (en) * | 2018-05-16 | 2019-11-26 | 安阳市恒威石化设备有限责任公司 | The disposable processing method of the inner hole of monoblock type bowl |
| CN111673152A (en) * | 2020-05-26 | 2020-09-18 | 上海航天精密机械研究所 | Manufacturing method of cabin body suitable for lunar exploration orbital vehicle |
| CN111823036A (en) * | 2020-07-17 | 2020-10-27 | 大连理工大学 | Rapid positioning device and method for thin-wall conical cylinder |
| CN111822764A (en) * | 2020-07-17 | 2020-10-27 | 大连理工大学 | Device and method for machining and measuring window of conical cylinder |
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| CN115007921A (en) | 2022-09-06 |
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