Gearbox shell and machining process

Abstract

The invention provides a gearbox shell and a machining process. The gearbox shell comprises a main body part, a shell body and an arc-shaped piece. According to the gearbox shell and the machining process provided by the invention, the main body part and the shell body are respectively used for machining the joint surfaces, and the inner machining hole in the main body part is machined in place when the main body part is independently machined, so that the machining efficiency and the machining precision of inner machining can be ensured. And meanwhile, the outer shell and the arc-shaped piece are assembled on the main body part together after being subjected to rough machining. And then the outer machining hole and the main shaft hole are machined in place, so that the relative positions of the main body part and all hole sites on the outer shell can be ensured. On one hand, machining of the inner machining hole is facilitated, the machining efficiency and the machining precision are improved, and meanwhile the precision of all hole sites in the outer shell and the arc-shaped piece can be guaranteed. And the overall machining precision of the gearbox outer shell is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of gearbox housing production, and in particular relates to a gearbox housing and a processing technology. Background Art

[0002] The gearbox housing is a shell structure used to install the transmission mechanism and its accessories. At present, the gearbox housing is usually cast, and the various processing surfaces and mounting holes on the casting are processed by CNC machine tools. Since most of the holes on the gearbox are mounting holes for the drive shaft, the relative position and size accuracy of the processing holes are required to be high. The structure of the gearbox itself is relatively complex, and some processing holes are located inside the gearbox. As a result, during processing, it is necessary to use an extension rod and reduce the feed speed of the machine tool to process the internal processing holes. On the one hand, the extension rod is prone to swing, resulting in poor processing accuracy, and at the same time, reducing the feed speed reduces the overall processing efficiency of the gearbox. Summary of the invention

[0003] The embodiment of the present invention provides a gearbox housing and a processing technology, aiming to solve the problems of low processing efficiency and poor processing accuracy of the gearbox housing during processing in the prior art.

[0004] To achieve the above object, the technical solution adopted by the present invention is: to provide a gearbox housing, comprising:

[0005] A main body, one side of the main body is provided with a mounting surface, a side of the main body away from the mounting surface is provided with at least two internal processing holes, and a side of the main body provided with the mounting surface is provided with an arc portion;

[0006] An outer shell is detachably mounted on the main body and covers the outer side of the inner processing hole. The outer shell is provided with an outer processing hole coaxially arranged with the inner processing hole.

[0007] The arc-shaped member is detachably mounted on the arc-shaped portion. When the arc-shaped member is mounted on the arc-shaped portion, it forms a spindle hole for mounting a spindle with the arc-shaped portion.

[0008] Compared with the prior art, the scheme shown in the embodiment of the present application is to divide the gearbox housing into a main body and outer shell, design the inner processing hole inside the gearbox housing to the main body, and detachably install an outer shell on the outside of the main body, the outer shell cover is arranged on the outside of the inner processing hole, and an outer processing hole coaxially arranged with the inner processing hole is also arranged on the outer shell, and an arc portion is fixedly installed on the side of the main body away from the inner processing hole, and the arc portion and the main body are integrally cast, and in order to prevent casting deformation at the spindle hole, the spindle hole is divided into an arc portion and an arc part, so as to ensure the casting quality in the early stage. At the same time, by dividing the gearbox housing into a main body and an outer shell, the early processing of the inner processing hole can be facilitated, which can improve the processing accuracy on the one hand, and at the same time, when processing the inner processing hole, interference caused by the outer processing hole can be avoided, which is more convenient for processing the inner processing hole.

[0009] In a possible implementation, the present application further includes a gearbox housing processing process, comprising the following steps:

[0010] S1. Rough machining of the main body: rough machining of the main body mounting surface, rough machining of the arc-shaped part, fine machining of the joint surface and threaded hole between the main body and the outer shell, fine machining of the joint surface between the arc-shaped part and the arc-shaped part, and fine machining of the inner machining hole;

[0011] S2. Rough machining of the outer shell: fine machining of the joint surface between the outer shell and the main body and the bolt holes, and rough machining of the outer machining holes;

[0012] S3. Rough machining of arc parts: finishing the joint surface between the arc parts and the arc parts;

[0013] S4. Assembly: The arc-shaped member and the outer shell are fixedly mounted on the main body;

[0014] S5. Overall finishing: Process the outer machining holes and spindle holes on the outer shell and the mounting surface on the main body.

[0015] In a possible implementation, the rough machining of the main body further includes:

[0016] S1. The base table is processed, the mounting surface is downward, and the base table is finely processed, and the base table and the mounting surface are arranged parallel to each other;

[0017] S2. The first side is processed, re-clamped, the joint surface of the main body and the outer shell is finished, and the inner hole is finished, and the two process pin holes connecting the main body and the outer shell are processed;

[0018] S3. Processing the second side: using the datum table as a reference, rough-machining the mounting surface and fine-machining the joint surface between the arc-shaped portion and the arc-shaped part.

[0019] In a possible implementation, the outer shell rough machining further includes the following steps:

[0020] S1. Screw platform processing, the outer shell and the main body of the joint surface facing down, processing the screw platform, the screw platform and the outer shell and the main body of the joint surface interval parallel arrangement, fine processing and screw platform parallel to each other structure table;

[0021] S2. Process the bottom surface, re-clamp with the screw platform facing downward, fine-process the joint surface between the outer shell and the main body, and rough-process the external processing holes. Under the same clamping, process the process pin holes corresponding to the main body.

[0022] In a possible implementation, at least two lifting platforms are provided on the main body, and the lifting platforms are arranged parallel to the base platform. Lifting holes are provided on the lifting platforms. During the overall finishing, an L bracket for fixing the main body is also included, and the L bracket is provided with through holes corresponding to the lifting holes. When the main body is installed on the L bracket, the spindle hole is arranged in the horizontal direction.

[0023] In a possible implementation, the rough processing of the main body also includes: in the same clamping state, after processing the process pin holes connecting the main body and the outer shell, processing the process pin holes on the mounting surface of the main body, and when the main body is installed on the L bracket, the process pin holes on the mounting surface of the main body are used to locate the installation position of the main body.

[0024] In a possible implementation, when the main body is roughly machined, the main body is fixed to the L bracket and positioned through the process pin hole. After the clamping is completed, the first side machining and the second side machining are performed.

[0025] In a possible implementation, after the main body is roughly machined, the main body is mounted on an L bracket and assembled with the outer shell, and after the assembly is completed, the whole body is finely machined.

[0026] In a possible implementation, the L bracket includes:

[0027] A fixing plate, used for fixing to a machine tool, wherein a keyway for positioning is provided at the bottom of the fixing plate;

[0028] The mounting plate is fixedly mounted on the fixing plate, and a clearance hole for avoiding the protruding part of the main body and the outer shell is arranged in the middle of the mounting plate. The mounting plate is also provided with a through hole for fixing the main body and a pin hole corresponding to the process pin hole on the mounting surface of the main body. After the main body is installed on the L bracket, the mounting surface on the main body and the outer shell are located on both sides of the mounting plate.

[0029] In a possible implementation, a plurality of bolt holes are provided on the mounting surface of the main body, and the plurality of bolt holes are arranged alternately with the hoisting platform in sequence. When processing the pin holes, at least two bolt holes are finely processed, and the L bracket is also fixedly installed with a guide pin corresponding to the finely processed bolt holes.

[0030] Compared with the prior art, the scheme shown in the embodiment of the present application uses the main body and the outer shell to process the joint surface separately, and when the main body is processed separately, the inner processing hole on the main body is processed in place, which can ensure the processing efficiency and processing accuracy of the inner processing. At the same time, after the outer shell and the arc-shaped part are roughly processed, they are assembled together on the main body. Then the outer processing holes and the spindle holes are processed in place, which can ensure the relative position of each hole position on the main body and the outer shell. On the one hand, it is convenient to process the inner processing holes, improve the processing efficiency and processing accuracy, and at the same time, it can ensure the accuracy of each hole position on the outer shell and the arc-shaped part. Ensure the overall processing accuracy of the gearbox outer shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the structure of a gearbox housing provided by an embodiment of the present invention;

[0032] Figure 2 A flow chart of a gearbox housing processing process provided by an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the structure of the main body provided in the embodiment of the present invention being installed on the L bracket Figure 1 ;

[0034] Figure 4 Schematic diagram of the structure of the main body provided in the embodiment of the present invention being installed on the L bracket Figure 2 .

[0035] Description of reference numerals:

[0036] 1. Main body; 11. Mounting surface; 12. Inner processing hole; 13. Lifting platform; 2. Outer shell; 21. Outer processing hole; 3. Arc-shaped part; 31. Spindle hole; 4. L bracket; 41. Fixing plate; 42. Mounting plate. DETAILED DESCRIPTION

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] Please also read Figures 1 to 4The gearbox housing provided by the present invention is now described. The gearbox housing includes a main body 1, an outer shell 2 and an arc-shaped member 3. A mounting surface 11 is provided on one side of the main body 1, and at least two inner processing holes 12 are provided on the side of the main body 1 away from the mounting surface 11, and an arc-shaped member is provided on the side of the main body 1 provided with the mounting surface 11; the outer shell 2 is detachably mounted on the main body 1, and the cover is arranged on the outer side of the inner processing hole 12, and the outer shell 2 is provided with an outer processing hole 21 coaxially arranged with the inner processing hole 12; the arc-shaped member 3 is detachably mounted on the arc-shaped member, and when the arc-shaped member 3 is mounted on the arc-shaped member, it forms a spindle hole 31 for mounting a spindle with the arc-shaped member.

[0039] Compared with the prior art, the gearbox housing provided in this embodiment is divided into a main body 1 and an outer shell 2, and the inner processing hole 12 inside the gearbox housing is designed on the main body 1, and the outer shell 2 is detachably installed on the outer side of the main body 1, and the outer shell 2 is arranged on the outer side of the inner processing hole 12, and the outer shell 2 is also provided with an outer processing hole 21 coaxially arranged with the inner processing hole 12, and an arc portion is fixedly installed on the side of the main body 1 away from the inner processing hole 12, and the arc portion and the main body 1 are integrally cast, and in order to prevent casting deformation at the spindle hole 31, the spindle hole 31 is divided into an arc portion and an arc part 3, so as to ensure the casting quality in the early stage. At the same time, by dividing the gearbox housing into the main body 1 and the outer shell 2, the early processing of the inner processing hole 12 can be facilitated, which can improve the processing accuracy on the one hand, and at the same time, when processing the inner processing hole 12, interference caused by the outer processing hole 21 can be avoided, which is more convenient for processing the inner processing hole 12.

[0040] Please also read Figures 1 to 4 The gearbox housing processing technology provided by the present invention is now described. It includes the following steps:

[0041] S1. Rough machining of the main body 1: rough machining of the mounting surface 11 of the main body 1, rough machining of the arc portion, finishing of the joint surface and threaded hole of the main body 1 connected to the outer shell 2, finishing of the joint surface of the arc portion and the arc member 3, and finishing of the inner machining hole 12;

[0042] S2. Rough machining of the outer shell 2: finishing the joint surface and bolt holes of the outer shell 2 connected to the main body 1, rough machining of the outer machining hole 21;

[0043] S3. Rough machining of arc-shaped member 3: finishing the joint surface between arc-shaped member 3 and the arc-shaped portion;

[0044] S4. Assembly: The arc-shaped member 3 and the outer shell 2 are fixedly mounted on the main body 1;

[0045] S5. Overall finishing: machining the outer machining hole 21 and the spindle hole 31 on the outer shell 2 and machining the mounting surface 11 on the main body 1 to the desired position.

[0046] Compared with the prior art, the gearbox housing provided in this embodiment uses the main body 1 and the outer shell 2 to process the joint surface separately, and when the main body 1 is processed separately, the inner processing hole 12 on the main body 1 is processed in place, which can ensure the processing efficiency and processing accuracy of the inner processing. At the same time, after the outer shell 2 and the arc-shaped part 3 are roughly processed, they are assembled together on the main body 1. Then the outer processing hole 21 and the spindle hole 31 are processed in place, which can ensure the relative position of each hole position on the main body 1 and the outer shell 2. On the one hand, it is convenient to process the inner processing hole 12, improve the processing efficiency and processing accuracy, and at the same time, it can ensure the accuracy of each hole position on the outer shell 2 and the arc-shaped part 3. Ensure the overall processing accuracy of the gearbox outer shell 2.

[0047] Specifically, in this embodiment, the rough machining part leaves a machining allowance of 1 mm on the basis of the theoretical value to ensure that there is sufficient machining allowance during the subsequent fine machining.

[0048] In some embodiments, the main body 1 may be Figure 1 , Figure 2 See also Figure 1 , Figure 2 The rough machining of the main body 1 also includes the following steps:

[0049] S1. The base table is processed, the mounting surface 11 is facing downward, and the base table is finished, and the base table and the mounting surface 11 are arranged parallel to each other;

[0050] S2. The first side is processed, re-clamped, the joint surface of the main body 1 and the outer shell 2 is finished, and the inner processing hole 12 is finished, and the two main body parts 1 and the outer shell 2 are processed to connect the pin holes;

[0051] S3. Processing the second side, taking the reference table as a reference, rough-machining the mounting surface 11 and fine-machining the joint surface between the arc-shaped portion and the arc-shaped member 3.

[0052] The main body 1 includes a flange located on the outer ring of the main body 1, and the mounting surface 11 and the reference platform are respectively located on both sides of the flange. A plurality of reference platforms are arranged on the flange, and the plurality of reference platforms are evenly spaced along the circumference of the flange. When the reference platform is processed, the height of each supporting point of the main body 1 is adjusted to ensure that the processing amount of each reference platform is uniform. The direction perpendicular to the reference platform is defined as the Z direction, and the directions parallel to the reference platform are respectively the X direction and the Y direction, and the X direction and the Y direction are set perpendicular to each other. When the processing of the reference platform is completed, the first side processing and the second side processing are completed with the reference platform as the Z direction reference to ensure the consistency of the Z direction processing reference.

[0053] Specifically, in this embodiment, the thickness between the reference platform and the mounting surface 11 of the main body 1 is measured before processing to ensure that both sides have sufficient processing capacity.

[0054] Specifically, in this embodiment, when aligning the reference platform before machining, it is ensured that the height difference between the blank surfaces of the two diagonal reference platforms is kept to a minimum.

[0055] Specifically, in this embodiment, when processing the first side, the reference in the Z direction is defined by the reference table, and the reference in the X direction and the Y direction is positioned by the center of the two inner processing holes 12. It is ensured that the processing amount of the two inner processing holes 12 is uniform. At the same time, before processing, the end milling cutter is used to process the traces on the blank surface based on the theoretical processing value of the inner circle of the inner processing hole 12 to detect whether the processing amount is uniform.

[0056] In some embodiments, the outer shell 2 can be made of Figure 1 , Figure 2 See also Figure 1 , Figure 2 , the rough machining of the outer shell 2 also includes the following steps:

[0057] S1. Screw platform processing, the outer shell 2 and the main body 1 are combined with the surface facing down, the screw platform is processed, the screw platform and the outer shell 2 and the main body 1 are arranged parallel to each other, and the structural table surface parallel to the screw platform is finished;

[0058] S2. Process the bottom surface, re-clamp with the screw platform facing downward, fine-process the joint surface between the outer shell 2 and the main body 1, and roughly process the external processing hole 21. Under the same clamping, process the process pin hole corresponding to the main body 1.

[0059] The outer shell 2 includes a flange ring for mounting on the main body 1. The flange ring is mounted on the outer side of the outer shell 2. The screw platform and the joint surface are located on both sides of the flange ring. The outer shell 2 is processed in the same way as the main body 1. At the same time, when the outer shell 2 is rough-machined, only the part connected to the main body 1 is rough-machined, and the rest of the processing parts are only rough-machined. After being mounted on the main body 1, it is processed together with the fine-machined parts on the main body 1 to ensure the overall processing accuracy.

[0060] Specifically, in this embodiment, a process pin hole is processed on the joint surface of the main body 1, and a corresponding process pin hole is processed on the joint surface of the outer shell 2. When the main body 1 is connected to the outer shell 2, the process pin hole can be used for positioning. The process pin hole is a pin hole with a size smaller than a normal pin hole. A pin of a smaller specification can be used for preliminary positioning. When there is an error in the later processing, the relative position of the main body 1 and the outer shell 2 can be fine-tuned. After the fine-tuning and fine processing are completed, the process pin hole is processed into a finished pin hole. The inside of the process pin hole is used to install the process pin, and the tolerance between the process pin hole and the process pin is between +0.02 and +0.05.

[0061] In some embodiments, the main body 1 may be Figure 1 , Figure 3 and Figure 4 See also Figure 1 , Figure 3 and Figure 4 At least two lifting platforms 13 are also provided on the main body 1. The lifting platforms 13 are arranged parallel to the reference platform. The lifting platforms 13 are provided with lifting holes. When the overall fine processing is performed, an L bracket 4 for fixing the main body 1 is also included. The L bracket 4 is provided with through holes corresponding to the lifting holes. When the main body 1 is installed on the L bracket 4, the spindle hole 31 is arranged in the horizontal direction. The mounting surface 11 is located on the side of the main body 1 close to the arc portion. A mounting ring is fixedly installed on the main body 1. The mounting ring and the main body 1 are integrally cast. The mounting surface 11 is located on the mounting ring. A plurality of lifting platforms 13 are provided on the side of the mounting ring away from the mounting surface 11. The lifting holes are provided on the lifting platforms 13, and through holes corresponding to the lifting holes are provided on the L bracket 4. The main body 1 can be fixed to the L bracket 4 through the lifting holes, which is convenient to operate and avoids the processing of other fixing holes. At the same time, when the main body 1 is mounted on the L bracket 4 for processing, the processing contents at both ends of the main body 1 can be processed in one clamping.

[0062] Preferably, in this embodiment, the lifting platform 13 is located on the side of the main body 1 away from the mounting surface 11, and is located on the side away from the arc-shaped portion. When the main body 1 is fixed to the L bracket 4, the end face of the lifting platform 13 abuts against the L bracket 4, so that the arc-shaped portion can be located on the outside of the L bracket 4. When processing the spindle hole 31, sufficient processing space can be left, which is more convenient for processing the spindle hole 31.

[0063] Specifically, in this embodiment, when the main body 1 is mounted on the L bracket 4, the mounting surface 11 is arranged along the vertical direction, and during the fine machining, a side milling machining center is used for machining.

[0064] In some embodiments, the main body 1 may be Figure 3 , Figure 4 See also Figure 3 , Figure 4, the rough machining of the main body 1 also includes: in the same clamping state, after machining the process pin hole connecting the main body 1 and the outer shell 2, machining the process pin hole on the mounting surface 11 of the main body 1, and when the main body 1 is installed on the L bracket 4, the process pin hole on the mounting surface 11 of the main body 1 is used to locate the installation position of the main body 1. A process pin corresponding to the process pin hole on the mounting surface 11 is fixedly mounted on the L bracket 4, and when the main body 1 is installed on the L bracket 4, the process pin on the L bracket 4 can be used for positioning. At the same time, the process pin hole on the mounting surface 11 and the process pin hole connecting the main body 1 and the outer shell 2 are completed by the same clamping, which can improve the accuracy of the relative position of the outer shell 2 and the L bracket 4 after the outer shell 2 is assembled.

[0065] Specifically, in this embodiment, a reference hole for the machine tool positioning coordinate system is provided on the L bracket 4, and the positions of the reference hole and the process pin are fixed values. Therefore, during processing, the reference hole on the L bracket 4 can be used as a reference for processing, avoiding the operation of re-adjusting and aligning the position of the main body 1.

[0066] In some embodiments, the main body 1 may be Figure 3 , Figure 4 See also Figure 3 , Figure 4 After the rough machining of the main body 1 is completed, the main body 1 is installed on the L bracket 4 and assembled with the outer shell 2, and the overall fine machining is performed after the assembly is completed. When the main body 1 is machined on the joint surface connected to the outer shell 2, it is installed on the L bracket 4 for processing. After the processing is completed, the L bracket 4 is removed from the processing machine. When the main body 1 is on the L bracket 4, the outer shell 2 is installed on the main body 1. The main body 1 and the outer shell 2 are fixedly connected with bolts, and the process pin holes are used for positioning. After the outer shell 2 is installed on the main body 1, the L bracket 4 is reassembled on the machine tool for overall fine machining. During processing, the disassembly and installation of the main body 1 on the L bracket 4 can be reduced. Avoid processing errors caused by multiple clamping, reduce the number of assembly times of the main body 1 on the L bracket 4, and improve processing efficiency.

[0067] Preferably, in this embodiment, the middle part of the main body 1 is fixedly mounted on the L bracket 4 through the lifting platform 13, so that the side milling machine tool can be used to process the processing parts at both ends of the main body 1 under the same clamping state. On the one hand, the number of clamping times of the machine tool is reduced, and on the other hand, during processing, based on a single alignment reference, the processing efficiency can be more effectively improved.

[0068] In some embodiments, the L bracket 4 can be used as follows: Figure 3 , Figure 4 See also Figure 3 , Figure 4, the L bracket 4 includes a fixing plate 41 and a mounting plate 42. The fixing plate 41 is used to be fixed to the machine tool, and a keyway for positioning is provided at the bottom of the fixing plate 41; the mounting plate 42 is fixedly installed on the fixing plate 41, and a clearance hole for avoiding the protruding part of the main body 1 and the outer shell 2 is provided in the middle of the mounting plate 42. The mounting plate 42 is also provided with a through hole for fixing the main body 1 and a pin hole corresponding to the process pin hole on the mounting surface 11 on the main body 1. After the main body 1 is installed on the L bracket 4, the mounting surface 11 on the main body 1 and the outer shell 2 are located on both sides of the mounting plate 42. The mounting plate 42 is fixedly installed in the middle of the fixing plate 41, and the fixing plate 42 and the fixing plate 41 are arranged perpendicular to each other. The fixing plate 41 is used to be fixedly installed on the processing machine tool. A clearance hole for avoiding the main body 1 is provided in the middle of the mounting plate 42. When the main body 1 is installed on the mounting plate 42, the main body 1 is located inside the clearance hole. The two ends of the main body 1 are located on both sides of the mounting plate 42, which facilitates the processing of the two ends of the main body 1 and the connection between the main body 1 and the outer shell 2. Pin holes corresponding to the process pin holes are also provided on the mounting plate 42, and process pins can be installed to facilitate the positioning of the installation position of the main body 1 on the mounting plate 42. At the same time, the relative position of the main body 1 and the mounting plate 42 is ensured, and during processing, the mounting plate 42 can be used as a reference for alignment processing.

[0069] In some embodiments, the main body 1 may be Figure 3 , Figure 4 See also Figure 3 , Figure 4 , a plurality of bolt holes are arranged on the mounting surface 11 of the main body 1, and the plurality of bolt holes are arranged alternately with the lifting platform 13 in sequence. When processing the process pin holes, at least two bolt holes are finely processed, and the L bracket 4 is also fixedly installed with a guide pin corresponding to the finely processed bolt holes. When processing the process pin holes on the mounting surface 11, two bolt holes are finely processed, the size of the bolt holes is larger than the size of the guide pins, and the tolerance range between the bolt holes and the guide pins is +0.05 to +0.1. The bolt holes and the process pin holes on the mounting surface 11 are in the same clamping state and are completed on the basis of one alignment. The relative positions of the bolt holes and the process pin holes are guaranteed. At the same time, the guide pins are provided for roughly positioning the position of the main body 1 installed on the L bracket 4, which is convenient for later alignment of the positions of the process pins on the main body 1 and the process pins on the L bracket 4.

[0070] Preferably, in this embodiment, two guide pins are installed on the L bracket 4, and a sliding block is also installed on the L bracket 4, one of the guide pins is fixedly installed on the sliding block, and the position of the sliding block on the L bracket 4 has the freedom to be adjusted in the vertical direction, and the other guide pin is fixedly installed on the L bracket 4. When the main body 1 is installed on the L bracket 4, the installation of the main body 1 can be guided by the position of the guide pin fixedly installed on the L bracket 4. Another guide pin is adjusted in position with the position of another bolt through hole on the main body 1, which facilitates the installation of the main body 1.

[0071] Specifically, in this embodiment, the bolt through hole and the guide pin are slidably matched, and a chamfer is provided at the end of the guide pin to facilitate sliding into the inside of the bolt through hole. When installing the main body 1 on the L bracket 4, the guide pin and the bolt through hole are first used for guiding and roughly positioning, and then the process pin is installed between the main body 1 and the L bracket 4, so that the bolt through hole can be fully utilized for guiding, so that the main body 1 is easily installed on the L bracket 4.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A gearbox housing, characterized in that: include: A main body (1), wherein a mounting surface (11) is provided on one side of the main body (1), at least two internally processed holes (12) are provided on a side of the main body (1) away from the mounting surface (11), and an arc-shaped portion is provided on the side of the main body (1) provided with the mounting surface (11); An outer shell (2) is detachably mounted on the main body (1) and covers the outer side of the inner processing hole (12); the outer shell (2) is provided with an outer processing hole (21) coaxially arranged with the inner processing hole (12); The arc-shaped member (3) is detachably mounted on the arc-shaped portion. When the arc-shaped member (3) is mounted on the arc-shaped portion, it forms a spindle hole (31) for mounting a spindle with the arc-shaped portion.

2. A gearbox housing processing technology, based on the gearbox housing according to claim 1, characterized in that: The following steps are involved: S1. Rough machining of the main body (1): rough machining of the mounting surface (11) of the main body (1), rough machining of the arc portion, finishing of the joint surface and threaded hole connecting the main body (1) and the outer shell (2), finishing of the joint surface between the arc portion and the arc member (3), and finishing of the inner machining hole (12); S2. Rough machining of the outer shell (2): finishing the joint surface and bolt holes of the outer shell (2) and the main body (1), rough machining of the outer machining hole (21); S3. Rough machining of the arc-shaped member (3): finishing the joint surface of the arc-shaped member (3) and the arc-shaped portion; S4. Assembling: The arc-shaped member (3) and the outer shell (2) are respectively fixedly mounted on the main body (1); S5. Overall finishing: machining the outer machining hole (21) and the spindle hole (31) on the outer shell (2) and machining the mounting surface (11) on the main body (1) to the desired position.

3. The gearbox housing processing process according to claim 2, characterized in that: The rough machining of the main body (1) also includes: S1. The base table is processed, the mounting surface (11) is facing downward, and the base table is finely processed, wherein the base table and the mounting surface (11) are arranged parallel to each other; S2. The first side is processed, re-clamped, the joint surface of the main body (1) and the outer shell (2) is finely processed, and the inner processing hole (12) is finely processed, and the two process pin holes for connecting the main body (1) and the outer shell (2) are processed; S3. Processing the second side, using the reference table as a reference, rough-machining the mounting surface (11) and fine-machining the joint surface between the arc-shaped portion and the arc-shaped member (3).

4. The gearbox housing processing process according to claim 3, characterized in that: The rough machining of the outer shell (2) further comprises the following steps: S1. Screw platform processing, the outer shell (2) and the main body (1) are facing downward, the screw platform is processed, the screw platform and the outer shell (2) and the main body (1) are arranged parallel to each other, and the structural table surface parallel to the screw platform is finely processed; S2. Process the bottom surface, re-clamp with the screw platform facing downward, fine-process the joint surface between the outer shell (2) and the main body (1), and roughly process the external processing hole (21). Under the same clamping, process the process pin hole corresponding to the main body (1).

5. The gearbox housing processing process according to claim 3, characterized in that: At least two lifting platforms (13) are also provided on the main body (1), and the lifting platforms (13) are arranged parallel to the base platform. The lifting platforms (13) are provided with lifting holes. When the overall fine processing is performed, an L bracket (4) for fixing the main body (1) is also included, and the L bracket (4) is provided with through holes corresponding to the lifting holes. When the main body (1) is installed on the L bracket (4), the main shaft hole (31) is arranged in the horizontal direction.

6. The gearbox housing processing process according to claim 5, characterized in that: The rough machining of the main body (1) also includes: in the same clamping state, after machining the process pin hole for connecting the main body (1) and the outer shell (2), machining the process pin hole on the mounting surface (11) of the main body (1); when the main body (1) is mounted on the L bracket (4), the mounting position of the main body (1) is positioned using the process pin hole on the mounting surface (11) of the main body (1).

7. The gearbox housing processing process according to claim 6, characterized in that: When the main body (1) is roughly machined, the main body (1) is fixed to the L bracket (4) and positioned through the process pin hole. After the clamping is completed, the first side machining and the second side machining are performed.

8. The gearbox housing processing process according to claim 7, characterized in that: After the rough machining of the main body (1) is completed, the main body (1) is mounted on the L bracket (4) and assembled with the outer shell (2), and after the assembly is completed, the whole is finely machined.

9. The gearbox housing processing process according to claim 7, characterized in that: The L bracket (4) comprises: A fixing plate (41) is used for fixing to a machine tool, and a keyway for positioning is provided at the bottom of the fixing plate (41); The mounting plate (42) is fixedly mounted on the fixing plate (41); a hole for avoiding the protruding part of the main body (1) and the outer shell (2) is provided in the middle of the mounting plate (42); a through hole for fixing the main body (1) and a pin hole corresponding to the process pin hole on the mounting surface (11) on the main body (1) are also provided on the mounting plate (42); after the main body (1) is mounted on the L bracket (4), the mounting surface (11) on the main body (1) and the outer shell (2) are located on both sides of the mounting plate (42).

10. The gearbox housing processing technology according to claim 6, characterized in that: A plurality of bolt holes are arranged on the mounting surface (11) of the main body (1), and the plurality of bolt holes are arranged alternately with the hoisting platform (13) in sequence. When processing the pin holes, at least two bolt holes are finely processed, and the L bracket (4) is also fixedly installed with a guide pin corresponding to the bolt hole at the finely processed position.

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