CN110340624B - Machining process of boring and milling machine for overturning bracket of cotton box - Google Patents
Machining process of boring and milling machine for overturning bracket of cotton box Download PDFInfo
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- CN110340624B CN110340624B CN201910695860.4A CN201910695860A CN110340624B CN 110340624 B CN110340624 B CN 110340624B CN 201910695860 A CN201910695860 A CN 201910695860A CN 110340624 B CN110340624 B CN 110340624B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
- B23B39/02—Boring machines; Combined horizontal boring and milling machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
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Abstract
The invention discloses a machining process of a boring and milling machine for a turning bracket of a cotton box, which comprises the following steps: vertically clamping a workpiece on a workbench, and adjusting the current bottom surface of a first supporting leg of the workpiece to enable the flatness of the current bottom surface to reach a preset range; processing a center hole and a first hole group according to the positioning size by taking the current bottom surface of the first supporting leg as a reference; processing a vertical surface of the connecting rib plate according to the positioning size by taking the circle center of the first hole group as a reference; horizontally clamping the workpiece on the workbench after the workpiece is disassembled, and adjusting the current bottom surface of the first supporting leg to enable the flatness of the current bottom surface to reach a preset range; and processing the second hole group according to the positioning size by taking the vertical surface of the connecting rib plate as a reference. According to the invention, the workpiece is vertically and horizontally clamped for twice, so that the center hole, the first hole group, the second hole group and the vertical surface of the connecting rib plate on the workpiece are machined, the machining precision is ensured, the machining efficiency of the cotton box overturning bracket is improved, the production cost is reduced, and the deformation deviation generated by a welding process is avoided.
Description
Technical Field
The invention relates to the technical field of processes, in particular to a machining process of a boring and milling machine for a turning bracket of a cotton box.
Background
With the development of agricultural technology in China, more and more large-scale agricultural machines are widely used.
In the cotton crop planting, production and processing industries, the cotton crop planting link is particularly important, and the finished product quality of cotton is directly determined. When crops such as cotton are mature, the cotton needs to be picked in time so as to avoid the influence on the quality of the cotton due to overlong idle time. At present, in order to improve the cotton picking efficiency and realize automatic and modern agricultural production, cotton pickers are generally used for harvesting cotton.
The cotton picker generally comprises a picking mechanism, a conveying mechanism, a cotton box, a power system and the like, wherein the picking mechanism is mainly used for harvesting cotton through a spiral structure such as a packing auger and the like, the conveying mechanism conveys the harvested cotton into the cotton box in a unified mode, and the cotton box is overturned and poured to process after the cotton box is filled with the cotton. In order to ensure the smooth overturning motion of the cotton box, an overturning bracket is generally arranged on a chassis of the cotton picker, and the cotton box can be conveniently overturned by installing the cotton box through the overturning bracket.
The overturning bracket of the cotton box belongs to a key part on a cotton picker, generally exists in pairs, is arranged at the head and tail ends of the chassis, can respectively clamp the head and tail ends of the cotton box, and is mainly used for supporting and adjusting the cotton box during overturning. The cotton thread overturning bracket is generally in a forked shape with an obtuse angle intersection, and is provided with two supporting legs and a connecting rib plate for connecting the two supporting legs and the connecting rib plate. When the overturning bracket of the cotton box is processed, the butt joint of the two supporting legs is generally completed in a rivet welding mode.
In the course of working at present hopper upset support, there are two kinds of processing schemes generally, firstly adopt professional equipment such as large-scale boring that falls to the ground, in the course of working, need change the cutter head many times and just can accomplish processing. Secondly, the parts of the cotton box overturning support are machined in place before welding, and then welding processing is completed through the tool. In the first processing mode, the processing precision can meet the design requirements of drawings, but the processing time is too long, the efficiency is low, the cost is too high, and the mass production is not facilitated; in the second processing method, although the processing time before welding is short, after welding is completed, the deformation is easy, and the accuracy requirement cannot be met.
Therefore, how to improve the machining efficiency of the cotton box overturning bracket, reduce the production cost, avoid the deformation deviation and ensure the machining precision is the technical problem faced by technical personnel in the field.
Disclosure of Invention
The invention aims to provide a machining process of a boring and milling machine for a cotton box overturning bracket, which can improve the machining efficiency of the cotton box overturning bracket, reduce the production cost, avoid deformation deviation and ensure the machining precision.
In order to solve the technical problem, the invention provides a machining process of a boring and milling machine for a turning bracket of a cotton box, which comprises the following steps:
vertically clamping a workpiece on a workbench, and adjusting the current bottom surface of a first supporting leg of the workpiece to enable the flatness of the current bottom surface to reach a preset range;
machining a central hole in a protruding piece on the side wall of the first supporting leg according to the radial pitch positioning size of the first supporting leg by taking the current bottom surface of the first supporting leg as a reference;
processing a first hole group at the tail end of a second supporting leg by taking the current bottom surface of the first supporting leg as a reference according to the included angle between the first supporting leg and the second supporting leg of a workpiece and the axial pitch positioning size of the tail end surface of the second supporting leg;
processing a vertical surface of a connecting rib plate positioned at the connecting position of the first supporting leg and the second supporting leg on a workpiece according to the horizontal distance positioning size of the first hole group by taking the circle center of the first hole group as a reference;
horizontally clamping the workpiece on a workbench after the workpiece is disassembled, and adjusting the current bottom surface of the first supporting leg to enable the flatness of the current bottom surface to reach a preset range;
and processing a second hole group at the tail end of the first supporting leg according to the horizontal distance positioning size of the vertical surface of the connecting rib plate by taking the vertical surface of the connecting rib plate as a reference.
Preferably, when the workpiece is vertically clamped, the workpiece is clamped through a right-angle vertical plate vertically arranged on the workbench, and the workpiece abuts against the current bottom surface of the first supporting leg through a plurality of equal-height sizing blocks arranged on the surface of the workbench.
Preferably, when the workpiece is horizontally clamped, the plurality of equal-height sizing blocks arranged on the surface of the workbench are respectively abutted against the current bottom surfaces of the first supporting leg and the second supporting leg.
Preferably, when the current bottom surface of the first leg is adjusted, the flatness change of the first leg is monitored through a dial indicator.
Preferably, the surface roughness of the connecting rib plate is Ra12.5 when the vertical surface of the connecting rib plate is processed.
Preferably, the center hole, the first hole group and the second hole group are machined through a boring cutter, and the vertical surface of the connecting rib plate is machined through a milling cutter.
The invention provides a machining process of a boring and milling machine for a turning bracket of a cotton box, which is mainly divided into 2 steps comprising 6 working procedures, wherein the first working procedure comprises working procedures 1-4, and the second working procedure comprises working procedures 5-6. In the step 1, a workpiece is vertically clamped on a workbench to be erected on the surface of the workbench, and then the current bottom surface of a first supporting leg on the workpiece is adjusted to enable the flatness of the current bottom surface to be within a preset range. In step 2, the protrusion on the side wall of the first body is positioned according to the radial pitch positioning dimension (L6) of the first body with reference to the adjusted current bottom surface of the first leg, and a central hole is machined for forming an assembly with a corresponding part on the cotton box. In the step 3, still taking the current bottom surface of the first leg as a reference, positioning on the second leg according to the included angle (beta) between the first leg and the second leg, and finally machining the first hole group according to the axial hole distance positioning size (L5) of the tail end surface of the second leg. The first group of holes includes a plurality of holes for forming an assembly with corresponding parts on the hopper. In step 4, the center of the processed first hole group is used as a reference, the vertical surface of the connecting rib plate is positioned according to the horizontal distance positioning size (L1) of the first hole group, and the vertical surface is processed to ensure the sufficiently accurate horizontal distance positioning size. In the step 5, the workpiece is detached and then clamped again, the clamping is horizontal clamping, namely the workpiece is horizontally placed on the surface of the workbench to be fixed, and then the current bottom surface of the first supporting leg is adjusted to enable the flatness of the first supporting leg to reach the preset range. In step 6, the vertical surface of the machined connecting rib plate is used as a reference surface, positioning is carried out on the first leg according to a horizontal distance positioning dimension (L2), and a second hole group is machined at the tail end position of the first leg, wherein the second hole group is used for forming assembly with a corresponding part on the cotton box. Therefore, according to the processing technology of the boring and milling machine for the overturning bracket of the cotton box, provided by the invention, the central hole, the first hole group, the second hole group and the vertical surface of the connecting rib plate on the workpiece are processed by vertically clamping and horizontally clamping the workpiece twice at the front and back, and the processing of the central hole, the first hole group, the second hole group and the vertical surface of the connecting rib plate on the workpiece is carried out by taking the bottom surface of the first support leg after adjustment and the vertical surface of the connecting rib plate after processing as references, and processing and positioning are carried out according to corresponding positioning sizes, so that the processing precision is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a flow chart of an embodiment of the present invention.
FIG. 2 is a front view of a structure for vertically clamping a workpiece on a worktable.
Fig. 3 is a top view of a horizontal clamping structure of a workpiece on a workbench.
Among them, in fig. 2 to 3:
the support comprises a first support leg-1, a second support leg-2, a connecting rib plate-3, a central hole-4, a first hole group-5, a second hole group-6, a high sizing block-7 and a right-angle vertical plate-8.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating an embodiment of the present invention.
In one embodiment provided by the invention, the machining process of the cotton box overturning bracket boring and milling machine is mainly divided into 2 steps which comprise 6 working procedures, wherein the first working procedure comprises working procedures 1-4, and the second working procedure comprises working procedures 5-6.
In the step 1, a workpiece is vertically clamped on a workbench to be erected on the surface of the workbench, and then the current bottom surface of the first supporting leg 1 on the workpiece is adjusted to enable the flatness of the current bottom surface to reach a preset range and approach to a horizontal plane.
In step 2, the adjusted current bottom surface (shown as surface a) of the first leg 1 is used as a reference, the first leg 1 is positioned on the bulge on the side wall according to the radial pitch positioning dimension (shown as L6) of the first leg 1, and a central hole 4 is machined, wherein the central hole 4 is used for forming assembly with a corresponding part on the cotton box.
In step 3, the second leg 2 is positioned based on the angle (β) between the first leg 1 and the second leg 2, still using the current bottom surface of the first leg 1 as a reference, and finally the first hole group 5 is machined based on the axial pitch positioning dimension (shown as L5) of the end surface of the second leg 2. The first group of holes 5 comprises a number of holes and is located at the end of the second leg 2 for forming a fitting with a corresponding part on the cotton box. Since the first hole group 5 includes a plurality of holes, positioning is assisted by the positioning dimensions of the radial gap L3 and the axial gap L4 with respect to each other, in addition to the positioning dimension L5.
Obviously, the sequence of the step 2 and the step 3 is not critical, and the actual operation can be changed.
In step 4, the vertical surface of the connecting rib plate 3 is positioned on the basis of the horizontal distance positioning dimension (L1 shown in the figure) of the first hole group 5 with the center of the first hole group 5 as a reference, and the vertical surface is machined so as to ensure high accuracy of the horizontal distance positioning dimension between the vertical surface of the connecting rib plate 3 and the first hole group 5. In this step, the round hole of any one of the first hole group 5 may be used as a reference, and for convenience of size detection and positioning, the hole farthest from the reference plane a in the first hole group 5 is generally used as a reference.
In the step 5, the workpiece is detached and then clamped again, and the clamping is horizontal clamping, that is, the workpiece is flatly placed on the surface of the workbench to be fixed, and then the current bottom surface (shown as a surface B) of the first supporting leg 1 is adjusted to enable the flatness of the current bottom surface to reach the preset range and approach to the horizontal plane.
In step 6, the vertical surface of the machined connecting rib plate 3 is used as a reference surface and is positioned on the first leg 1 according to the horizontal distance positioning dimension (shown as L2), and then a second hole group 6 is machined at the end position of the first leg 1, wherein the second hole group 6 is used for forming assembly with a corresponding part on the cotton box. Similarly, the second hole group 6 also includes a plurality of holes distributed along the length direction of the first leg 1, and when the second leg is machined, the first hole is machined according to the positioning dimension L2, and the remaining holes are machined according to the pitch positioning dimensions of the two adjacent holes.
So, the processing technology of the boring and milling machine for the overturning bracket of the cotton box provided by the embodiment, through twice vertical clamping and horizontal clamping to the workpiece, the center hole 4 on the workpiece is completed, the first hole group 5, the second hole group 6 and the vertical surface of the connecting rib plate 3 are processed, the bottom surface of the first support leg 1 after adjustment and the vertical surface of the connecting rib plate 3 after processing are used as references during the processing, the processing and the positioning are carried out according to the corresponding positioning size, the processing precision is ensured, compared with the prior art, the processing efficiency of the overturning bracket of the cotton box is improved, and special equipment is not required, the production cost is reduced, and the deformation deviation generated by the welding technology is avoided.
As shown in fig. 2, fig. 2 is a front view of a structure for vertically clamping a workpiece on a worktable.
When the workpiece is vertically clamped in the process step 1, the workpiece can be clamped by a right-angle vertical plate 8 vertically arranged on the surface of the workbench, and the workpiece can be lifted by a plurality of equal-height sizing blocks 7 arranged on the surface of the workbench. Specifically, the workpiece can be tightly attached to the surface of the right-angled vertical plate 8, and is clamped and fixed by a plurality of positioning seats (not shown in the figure) arranged on the surface of the right-angled vertical plate 8. Meanwhile, since the first leg 1 is generally located at the lower end when the workpiece is erected, and the first leg 1 is a long straight pipe, the respective equal-height sizing blocks 7 may be linearly arranged on the surface of the table to abut against the current bottom surface of the first leg 1. Then, the padding height of each equal-height padding iron 7 for each position of the current bottom surface of the first supporting leg 1 is gradually adjusted to be close to the horizontal plane and used as a reference plane.
As shown in fig. 3, fig. 3 is a top view of a structure for horizontally clamping a workpiece on a worktable.
When the workpiece is horizontally clamped in the step 2, the workpiece can be directly flatly placed on the surface of the workbench, and is clamped and fixed through a plurality of positioning seats (not shown in the figure) arranged on the surface of the workbench. Meanwhile, the workpiece is also raised by using a plurality of equal-height sizing blocks 7, so that the current bottom surface (the bottom surface is different from the bottom surface in the previous clamping) of the first support leg 1 is pressed on each equal-height sizing block 7. Then, the padding height of each equal-height padding iron 7 for each position of the current bottom surface of the first supporting leg 1 is gradually adjusted to be close to the horizontal plane and used as a reference plane. Meanwhile, in order to prevent the workpiece from deflecting due to the generation of gravity moment, 4 equal-height sizing blocks 7 can be adopted, wherein 2 equal-height sizing blocks 7 are respectively padded at two end positions of the first supporting leg 1, and the other 2 equal-height sizing blocks 7 are respectively padded at two end positions of the second supporting leg 2.
In addition, in the process of adjusting the bottom surface of the first supporting leg 1, the flatness change of the bottom surface of the first supporting leg 1 can be detected in real time through a dial indicator on a machine tool, so that a worker can conveniently master the progress, and the processing precision and efficiency are improved.
Further, in processing the vertical face of the connecting rib plate 3, in order to ensure that the horizontal distance positioning dimension L1 from the surface to the first hole group 5 is sufficiently accurate, the vertical face of the connecting rib plate 3 may be processed to a level having a surface roughness of ra 12.5. Based on the same consideration, before the first hole group 5 is machined, a spot hole may be first drilled at a corresponding position on the distal end of the second leg 2, but not machined, and then the horizontal distance between the tapped hole and the vertical surface of the connecting rib plate 3 that has not been machined is detected. If the detection value is larger than L1, it indicates that the vertical surface of the connecting rib plate 3 has enough milling allowance, and the vertical surface of the connecting rib plate 3 can be gradually milled, so that the detection value gradually approaches L1. On the contrary, if the detection value is smaller than L1, it indicates that the milling allowance of the vertical surface of the connecting rib plate 3 is insufficient at this time, and at this time, the position of the point hole of the first hole group 5 on the end of the second leg 2 may be properly adjusted, so that the position of the point hole is shifted by Δ L along the axial direction of the second leg 2, and it is ensured that the adjusted detection value is larger than L1.
In the machining process, a boring and milling machine is adopted for machining, and a boring cutter can be used for boring a central hole 4, a first hole group 5 and a second hole group 6 on a workpiece; the vertical surface of the connecting rib plate 3 on the workpiece can be milled by a milling cutter.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The machining process of the boring and milling machine for the overturning bracket of the hopper is characterized by comprising the following steps of:
vertically clamping a workpiece on a workbench, and adjusting the current bottom surface of a first supporting leg of the workpiece to enable the flatness of the current bottom surface to reach a preset range;
machining a central hole in a protruding piece on the side wall of the first supporting leg according to the radial pitch positioning size of the first supporting leg by taking the current bottom surface of the first supporting leg as a reference;
processing a first hole group at the tail end of a second supporting leg by taking the current bottom surface of the first supporting leg as a reference according to the included angle between the first supporting leg and the second supporting leg of a workpiece and the axial pitch positioning size of the tail end surface of the second supporting leg;
processing a vertical surface of a connecting rib plate positioned at the connecting position of the first supporting leg and the second supporting leg on a workpiece according to the horizontal distance positioning size of the first hole group by taking the circle center of the first hole group as a reference;
horizontally clamping the workpiece on a workbench after the workpiece is disassembled, and adjusting the current bottom surface of the first supporting leg to enable the flatness of the current bottom surface to reach a preset range;
and processing a second hole group at the tail end of the first supporting leg according to the horizontal distance positioning size of the vertical surface of the connecting rib plate by taking the vertical surface of the connecting rib plate as a reference.
2. The processing technology of the boring and milling machine for the overturning bracket of the hopper as claimed in claim 1, wherein when the workpiece is vertically clamped, the workpiece is clamped through a right-angled vertical plate erected on a workbench, and is abutted against the current bottom surface of the first supporting leg through a plurality of equal-height sizing blocks arranged on the surface of the workbench.
3. The hopper turning support boring and milling machine processing technology as claimed in claim 2, wherein when a workpiece is horizontally clamped, the workpiece abuts against the current bottom surfaces of the first supporting leg and the second supporting leg through a plurality of equal-height sizing irons arranged on the surface of a workbench respectively.
4. The hopper turning stand boring and milling machine processing technique of claim 3 wherein changes in flatness of the first leg are monitored by a dial gauge while adjusting the current bottom surface thereof.
5. The processing technology of the boring and milling machine for the overturning bracket of the cotton box according to claim 4 is characterized in that the surface roughness of the connecting rib plate is Ra12.5 when the vertical surface of the connecting rib plate is processed.
6. The boring and milling machine processing process for the hopper overturning bracket according to claim 5, wherein the central hole, the first hole group and the second hole group are processed through a boring cutter, and the vertical surface of the connecting rib plate is processed through a milling cutter.
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| CN201910695860.4A CN110340624B (en) | 2019-07-30 | 2019-07-30 | Machining process of boring and milling machine for overturning bracket of cotton box |
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| CN201910695860.4A CN110340624B (en) | 2019-07-30 | 2019-07-30 | Machining process of boring and milling machine for overturning bracket of cotton box |
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| CN110340624B true CN110340624B (en) | 2020-10-09 |
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| CN103737259A (en) * | 2013-12-20 | 2014-04-23 | 柳州正菱集团有限公司 | Machining method of bearing supporting frame of middle shaft of small car |
| CN103769798B (en) * | 2014-01-27 | 2016-01-20 | 哈尔滨飞机工业集团有限责任公司 | A kind of main inspection drill jig method of manufacturing technology |
| CN103978343B (en) * | 2014-04-17 | 2016-08-24 | 中信重工机械股份有限公司 | A kind of processing method of large-sized grinder feed bend pipe |
| CN105127465B (en) * | 2015-09-02 | 2017-09-12 | 哈尔滨飞机工业集团有限责任公司 | A kind of borehole processing method of angular bit mould |
| CN105479123B (en) * | 2016-02-04 | 2017-09-22 | 山东富源履带机械有限公司 | A kind of casing processing tool and its processing technology |
| CN106078104B (en) * | 2016-06-29 | 2018-10-02 | 洛阳奇瑞机械科技有限公司 | A kind of machine-tooled method of Aircraft Air gondola fork |
| CN107584250B (en) * | 2017-09-01 | 2019-10-18 | 济宁东源机械制造有限公司 | The production technology and production tooling of bull-dozer 3D benchmark cantilever design wing plate |
| CN107931968A (en) * | 2017-11-07 | 2018-04-20 | 陕西品达石化有限公司 | The hole forming method of multiple surface assembled body |
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