CN108098273B - Machining process for machining gear chamber on automatic line - Google Patents
Machining process for machining gear chamber on automatic line Download PDFInfo
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- CN108098273B CN108098273B CN201711370321.0A CN201711370321A CN108098273B CN 108098273 B CN108098273 B CN 108098273B CN 201711370321 A CN201711370321 A CN 201711370321A CN 108098273 B CN108098273 B CN 108098273B
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Abstract
The invention relates to a processing technology for processing a gear chamber by an automatic line, which comprises the following working procedures: the first process step: selecting a first flange face, a first reference hole and a first pin hole as rough machining references, and machining a second flange face, a first hole end face, a second hole end face, a third hole end face and mounting holes of a gear chamber; and a second step: machining the side face of the gear chamber by taking the second flange face, the first pin hole and the second pin hole as finish machining references; and a third step of: and processing the first flange surface, the first shaft hole end surface, the second shaft hole end surface and the plurality of reference holes by taking the second flange surface, the first pin hole and the second pin hole as processing references. The machining process for machining the gear chamber by the automatic line is reasonable in procedure arrangement, and the compound cutter is applied for multiple times, so that the machining precision of the gear chamber is effectively guaranteed, and the machining efficiency is improved.
Description
Technical Field
The invention relates to a processing technology for processing a gear chamber by an automatic line.
Background
The gear chamber processed by the automatic line is easy to deform due to the small thickness of the gear chamber, and meanwhile, the precision requirements of the surface and the hole of the gear chamber are very high, so that the processing is very difficult.
Disclosure of Invention
The invention aims to solve the technical problem of providing a machining process for machining a gear chamber on an automatic line, which effectively ensures the machining precision of the gear chamber and has high machining efficiency.
In order to solve the technical problems, the technical scheme of the invention is as follows: the machining process for machining the gear chamber by the automatic line comprises the following steps of:
the first process step: selecting a first flange face F100, a first reference hole 101 and a first pin hole 114 as rough machining references, and machining a second flange face F200, a first hole end face F210, a second hole end face F220, a third hole end face F230 and mounting holes of a gear chamber;
and a second step: machining the side surface of the gear chamber with the second flange surface F200, the first pin hole 114, and the second pin hole 106 as finishing references;
and a third step of: the first flange surface F100, the first axial hole end surface F110, the second axial hole end surface F120, and the plurality of reference holes are machined using the second flange surface F200, the first pin holes 114, and the second pin holes 106 as machining references.
As a preferable technical scheme, the first process comprises the following steps:
s11: finishing the machining of the second hole end face F220 and the third hole end face F230 by one-time cutting;
s12: finishing the processing of a second flange surface F200 and a first hole end surface F210 by one-time feed;
s13: machining a hole in the gear chamber;
s14: the first flange surface F100 is machined with reference to the machined second flange surface F200 and the reference hole.
Preferably, step S13 includes the following steps:
s131: milling the end face and the vertical face of the second flange face connecting hole group by using an end mill, and processing each hole of the second flange face connecting hole group;
s132: machining the bottom hole and the threads of the first threaded hole 145;
s133: processing bottom holes and threads of all holes of the threaded hole group for connecting the first flange surface;
s134: processing a first flange surface connecting smooth hole group;
s135: machining a first reference hole 101, a first pin hole 114, a second reference hole 102, a second pin hole 106, a third reference hole 130, a fourth reference hole 131 and a fifth reference hole 132;
s136: the bottom hole and the thread of the second screw hole 146 are processed.
Preferably, in step S133, a composite drill is used for machining the bottom hole, and the composite drill includes a Q1 portion, a Q2 portion, and a Q3 portion that are sequentially connected and have an outer diameter that gradually increases.
As a preferred technical scheme, the second process comprises the following steps:
s21: machining a top surface F310 and an upper hole end surface (F330);
s22: processing the elongated hole on the top surface (F310);
s23: processing an upper threaded hole 313 on an upper hole end surface (F330);
s24: processing two connecting threaded holes on the top surface F310;
s25: machining a side hole end face F320 on the left side face;
s26: machining a side unthreaded hole 321 in the side hole end face F320;
s27: machining a side threaded hole 322 in the side hole end face F320;
s28: processing a bottom surface F300;
s29: the threaded hole on the bottom surface F300 is machined.
As a preferred technical solution, the third step comprises the following steps:
s31: sequentially processing a first flange face F100, a first shaft hole end face F110 and a second shaft hole end face F120;
s32: respectively processing a first shaft hole 201 and a second shaft hole 202 by using a first compound cutter;
s33: processing a connecting threaded hole group on the first shaft hole end surface F110;
s34: processing a connecting threaded hole group on the end surface F120 of the second shaft hole;
s35: mounting positioning hole groups of the finish machining gear chamber;
s36: finishing the first reference hole 101, the second reference hole 102, the third reference hole 130, the fourth reference hole 131 and the fifth reference hole 132;
s37: detecting the position degrees of the first reference hole 101 and the second reference hole 102;
s38: sequentially and finely machining a bottom surface F300, a top surface F310, a first hole end surface F210, a second hole end surface F220 and a third hole end surface F230; a first flange face F100, a first shaft hole end face F110 and a second shaft hole end face F120;
s39: and applying a second compound cutter to machine the first reference hole 101, the second reference hole 102, the third reference hole 130, the fourth reference hole 131, the fifth reference hole 132, the first shaft hole 201 and the second shaft hole 202 within the tolerance range required by the drawing paper.
Preferably, the first compound cutting tool in step S32 includes a first tool bit on which a first axial hole cutting edge, a first axial hole beveled corner guiding edge, a second axial hole cutting edge, and a second axial hole beveled corner guiding edge are provided in this order from a cutting end thereof.
Preferably, the second compound tool in step S39 includes a second tool bit having a first cutting edge at an end thereof for machining the first reference hole 101, the second reference hole 102, the third reference hole 130, the fourth reference hole 131, and the fifth reference hole 132, and a second cutting edge and a third cutting edge for machining the first axial hole 201 and the second axial hole 202, respectively, the second cutting edge being located between the first cutting edge and the third cutting edge.
Due to the adoption of the technical scheme, in the machining process, a large number of compound cutters are used, particularly in the third process, the machining efficiency is effectively guaranteed, the machining precision of the gear chamber is improved, and the gear chamber is guaranteed to meet the machining requirements.
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, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a gear chamber;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is an enlarged view of the upper half of FIG. 2;
FIG. 4 is an enlarged view of the lower half of FIG. 2;
FIG. 5 is a top view of FIG. 1;
FIG. 6 is a bottom view of FIG. 1;
FIG. 7 is a schematic view of the configuration of the tool tip of the first compound cutting tool;
FIG. 8 is a view of a first compound tool in use;
FIG. 9 is a schematic view of the construction of the tool tip of the second compound cutting tool;
FIG. 10 is a view of a second compound tool in use;
FIG. 11 is a schematic diagram of a composite drill bit;
FIG. 12 is a schematic view of a composite drill bit for machining a first bottom hole;
FIG. 13 is a schematic view of a composite drill bit for machining a second bottom hole;
FIG. 14 is a schematic side view of the gear chamber;
fig. 15 is a partial view in the direction U of fig. 14.
Detailed Description
As shown in fig. 1, 2, 3, 4, 5 and 6, the gear chamber machined by the automatic line has a thickness of only 56.67mm, is small in thickness, is easy to deform in the machining process, has very high precision requirement, and is very difficult to machine. The main processing difficulty is that the flatness and parallelism of the reference plane a, i.e., the first flange face F100 and the second flange face F200, are high, and the position requirements of the first reference hole 101, the first pin hole 114, the second reference hole 102, the second pin hole 106, the third reference hole 130, the fourth reference hole 131 and the fifth reference hole 132 are strict. In view of the strict requirement on the machining precision of the features, the holes must be machined in the same process. The machining of the gear chamber can therefore be divided into the following steps:
the first process step: selecting a first flange face F100, a first reference hole 101 and a first pin hole 114 as rough machining references, and machining a second flange face F200, a first hole end face F210, a second hole end face F220, a third hole end face F230 and mounting holes of a gear chamber;
and a second step: machining the side surface of the gear chamber with the second flange surface F200, the first pin hole 114, and the second pin hole 106 as finishing references;
and a third step of: the first flange surface F100, the first axial hole end surface F110, the second axial hole end surface F120, and the plurality of reference holes are machined using the second flange surface F200, the first pin holes 114, and the second pin holes 106 as machining references.
Specifically, the first process comprises the following steps:
s11: finishing the machining of the second hole end face F220 and the third hole end face F230 by one-time cutting;
s12: finishing the processing of a second flange surface F200 and a first hole end surface F210 by one-time feed; the feed path is that the milling cutter firstly advances along the second flange surface F200, and the first hole end surface F210 is processed after the second flange surface F200 is processed. And a machining allowance of 0.5mm is reserved on the machined second flange surface F200, and a machining allowance of 2mm is reserved for the first flange surface F100. Reserving machining allowance of 0.2mm after machining of the first hole end face F220, the second hole end face F230 and the third hole end face F210
S13: machining a hole in the gear chamber; step S13 includes the following processing contents:
s131: milling the end face and the vertical face of the second flange face connecting hole group by using an end mill, and processing each hole of the second flange face connecting hole group; wherein the second flange surface connection hole group includes holes 123, 124, 125, 126, 144, and 143;
s132: machining the bottom hole and the threads of the first threaded hole 145;
s133: processing bottom holes and threads of all holes of the threaded hole group for connecting the first flange surface; wherein the first flange face connection screw hole group comprises holes 115, 116, 117, 118, 119, 120, 121 and 122; also included are apertures 127, 128, and 129; the thread specifications of the holes are the same, so that the same cutter can be used. In order to reduce the number of times of tool changing, a compound tool is used for machining a bottom hole, as shown in fig. 5, the compound drill comprises a Q1 part, a Q2 part and a Q3 part which are sequentially connected and have gradually increased outer diameters, a bottom hole structure of holes 115, 116, 117, 118, 119, 120, 121 and 122 is shown in fig. 12, a bottom hole structure of holes 127, 128 and 129 is shown in fig. 13, when the structure shown in fig. 12 is machined, a tool bit Q1 part, a tool bit Q2 part and a tool bit Q3 part are all applied, and when the structure shown in fig. 13 is machined, only the tool bit Q1 part and the tool bit Q2 part are applied.
S134: processing a first flange surface connecting smooth hole group; the first flange connection light hole group includes holes 103 to 105, holes 107 to 113, holes 135 to 142, and holes 230 to 232, and the holes have the same hole diameter but not the same hole depth, and thus the holes have to be processed together with the same hole depth.
S135: machining a first reference hole 101, a first pin hole 114, a second reference hole 102, a second pin hole 106, a third reference hole 130, a fourth reference hole 131 and a fifth reference hole 132;
s136: the bottom hole and the thread of the second screw hole 146 are processed.
S14: the first flange surface F100 is machined with reference to the machined second flange surface F200 and the reference hole. Preferably, the first flange surface F100 is machined with the machined second flange surface F200 as a finishing reference a, the first reference hole 101 as a reference C, and the second reference hole 102 as a reference B
Specifically, the second step includes the following steps:
s21: machining a top surface F310 and an upper hole end surface F330;
s22: processing the elongated hole on the top surface F310;
s23: processing an upper threaded hole 313 on the upper hole end surface F330;
s24: processing two connecting threaded holes on the top surface F310;
s25: machining a side hole end face F320 on the left side face;
s26: machining a side unthreaded hole 321 in the side hole end face F320;
s27: machining a side threaded hole 322 in the side hole end face F320;
s28: processing a bottom surface F300;
s29: the threaded hole on the bottom surface F300 is machined. .
Specifically, the third step includes the following steps:
s31: sequentially processing a first flange face F100, a first shaft hole end face F110 and a second shaft hole end face F120; the first flange face F100, the first shaft hole end face F110 and the second shaft hole end face F120 after machining still have machining allowance of 0.5 mm.
S32: a first composite cutter is used for respectively carrying out primary machining on a first shaft hole 201 and a second shaft hole 202; as shown in fig. 7 and 8, the first compound cutting tool includes a first cutting head D1, and the first cutting head D1 is provided with a first axial hole cutting edge D11, a first axial hole beveled edge D12, a second axial hole cutting edge D13 and a second axial hole beveled edge D14 in this order from the cutting end thereof. The first shaft hole cutting edge D11 and the first shaft hole bevel guiding edge D12 are respectively used for reaming and chamfering the first shaft hole 201; the second axial hole cutting edge D13 and the second axial hole beveling edge D14 are used to ream and bevel the second axial hole 202, respectively.
S33: processing a connecting threaded hole group on the first shaft hole end surface F110; including apertures 214, 215, 216, 217, 218, and 219.
S34: processing a connecting threaded hole group on the end surface F120 of the second shaft hole; the set of connecting threaded holes on the second axial bore end face F120 is machined, including holes 205, 206 and 207.
S35: mounting positioning hole groups of the finish machining gear chamber; including locating holes including holes 204, 203, and 246; the mounting holes include holes 232, 230, and 231.
S36: finishing the first reference hole 101, the second reference hole 102, the third reference hole 130, the fourth reference hole 131 and the fifth reference hole 132;
s37: detecting the position degrees of the first reference hole 101 and the second reference hole 102;
s38: sequentially and finely machining a bottom surface F300, a top surface F310, a first hole end surface F210, a second hole end surface F220 and a third hole end surface F230; a first flange face F100, a first shaft hole end face F110 and a second shaft hole end face F120;
s39: and applying a second compound cutter to machine the first reference hole 101, the second reference hole 102, the third reference hole 130, the fourth reference hole 131, the fifth reference hole 132, the first shaft hole 201 and the second shaft hole 202 within the tolerance range required by the drawing paper. As shown in fig. 9 and 10, the second compound tool includes a second tool bit having a first cutting edge at an end thereof for machining the first reference hole 101, the second reference hole 102, the third reference hole 130, the fourth reference hole 131, and the fifth reference hole 132, and a second cutting edge and a third cutting edge for machining the first axial hole 201 and the second axial hole 202, respectively, the second cutting edge being located between the first cutting edge and the third cutting edge. In the machining process, the second compound cutter can machine the first shaft hole 201, the second shaft hole 202, the first reference hole 101, the second reference hole 102, the third reference hole 130, the fourth reference hole 131 and the fifth reference hole 132, so that the machining precision can be effectively guaranteed, and the machining efficiency can be improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The machining process for machining the gear chamber by the automatic line is characterized by comprising the following steps of: the method comprises the following steps:
the first process step: selecting a first flange face (F100), a first reference hole (101) and a first pin hole (114) as rough machining references, and machining a second flange face (F200), a first hole end face (F210), a second hole end face (F220), a third hole end face (F230) and mounting holes of a gear chamber;
and a second step: machining the side surface of the gear chamber by taking the second flange surface (F200), the first pin hole (114) and the second pin hole (106) as finish machining references;
and a third step of: machining a first flange surface (F100), a first shaft hole end surface (F110), a second shaft hole end surface (F120) and a plurality of reference holes by taking a second flange surface (F200), a first pin hole (114) and a second pin hole (106) as machining references;
the first process comprises the following steps:
s11: finishing the machining of the second hole end face (F220) and the third hole end face (F230) by one-time feed;
s12: finishing the machining of a first flange surface (F200) and a first hole end surface (F210) by one-time feed;
s13: machining a hole in the gear chamber;
s14: processing the first flange surface (F100) by taking the processed second flange surface (F200) and the reference hole as references;
step S13 includes the following processing steps:
s131: milling the end face and the vertical face of the second flange face connecting hole group by using an end mill, and processing each hole of the second flange face connecting hole group;
s132: machining a bottom hole and threads of the first threaded hole (145);
s133: processing bottom holes and threads of all holes of the threaded hole group for connecting the first flange surface;
s134: processing a first flange surface connecting smooth hole group;
s135: machining a first reference hole (101), a first pin hole (114), a second reference hole (102), a second pin hole (106), a third reference hole (130), a fourth reference hole (131) and a fifth reference hole (132);
s136: and machining the bottom hole and the threads of the second threaded hole (146).
2. The process of machining a gear chamber of an automated line according to claim 1, wherein: in the step S133, a composite drill is used for processing the bottom hole, and the composite drill includes a Q1 portion, a Q2 portion, and a Q3 portion which are sequentially connected and have gradually increased outer diameters.
3. The process of machining a gear chamber of an automated line according to claim 1, wherein: the second process comprises the following steps:
s21: machining a top surface (F310) and an upper hole end surface (F330);
s22: processing the elongated hole on the top surface (F310);
s23: processing an upper threaded hole (313) on an upper hole end surface (F330);
s24: processing two connecting threaded holes on the top surface (F310);
s25: machining a side hole end face on the left side face (F320);
s26: machining a side unthreaded hole (321) on the end face (F320) of the side hole;
s27: machining a side threaded hole (322) in the end face (F320) of the side hole;
s28: machining a bottom surface (F300);
s29: and machining a threaded hole in the bottom surface (F300).
4. The process of machining a gear chamber of an automated line according to claim 1, wherein: the third step includes the following steps:
s31: sequentially processing a first flange face (F100), a first shaft hole end face (F110) and a second shaft hole end face (F120);
s32: respectively machining a first shaft hole (201) and a second shaft hole (202) by using a first compound cutter;
s33: processing a connecting thread hole group on the first shaft hole end surface (F110);
s34: processing a connecting threaded hole group on the end surface (F120) of the second shaft hole;
s35: mounting positioning hole groups of the finish machining gear chamber;
s36: finely machining a first reference hole (101), a second reference hole (102), a third reference hole (130), a fourth reference hole (131) and a fifth reference hole (132);
s37: detecting the position degrees of a first reference hole (101) and a second reference hole (102);
s38: finish machining a bottom surface (F300), a top surface (F310), a first hole end surface (F210), a second hole end surface (F220) and a third hole end surface (F230) in sequence; a first flange face (F100), a first shaft hole end face (F110), a second shaft hole end face (F120);
s39: and applying a second compound cutter to process the first reference hole (101), the second reference hole (102), the third reference hole (130), the fourth reference hole (131), the fifth reference hole (132), the first shaft hole (201) and the second shaft hole (202) within the tolerance range required by the drawing sheet.
5. The automated line machining gear chamber machining process of claim 4, wherein: the first compound tool in step S32 includes a first tool bit on which a first shaft hole cutting edge, a first shaft hole oblique cutting edge, a second shaft hole cutting edge, and a second shaft hole oblique cutting edge are provided in order from a cutting end thereof.
6. The automated line gear chamber machining process of claim 5, wherein: the second compound tool in step S39 includes a second tool bit, a first cutting edge for machining a first reference hole (101), a second reference hole (102), a third reference hole (130), a fourth reference hole (131), and a fifth reference hole (132) is provided at an end of the second tool bit, and a second cutting edge and a third cutting edge for respectively machining a first shaft hole (201) and a second shaft hole (202) are provided, and the second cutting edge is located between the first cutting edge and the third cutting edge.
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| CN201711370321.0A CN108098273B (en) | 2017-12-19 | 2017-12-19 | Machining process for machining gear chamber on automatic line |
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