Fixture special for turning machining of planetary gear support

Abstract

The utility model relates to the technical field of clamps, in particular to a special clamp for turning a planetary gear support. Comprising a mounting shaft and a fixing mechanism, and the fixing mechanism comprises a fixing disc, an adjusting disc, a limiting table, a limiting ring, a positioning ring, a positioning bolt, a plug pin and a tensioning device. The planetary gear support does not need to be positioned again, so that one-time positioning is achieved, machining of the three protruding columns on the planetary gear support can be completed, the precision among the three protruding columns after machining is completed is effectively guaranteed, and then machining of the three protruding columns can be achieved after one-time positioning of turning machining of the planetary gear support. The clamping error is reduced, and the machining precision among the three convex columns is effectively improved so as to meet the product machining requirement.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fixture, especially a special fixture for turning machining of planetary gear support. BACKGROUND

[0002] Turning machining is mostly carried out by a lathe, and a corresponding fixture is needed to fix parts during lathe machining. At present, the planetary gear support is usually fixed by directly sleeving on the main shaft of the lathe, and then positioned according to the main shaft when the existing lathe turns machines the planetary gear support. This way needs to position three times when turning machining the three protruding columns on the planetary gear support, that is, the center axis of the protruding column needs to be positioned once before machining each protruding column. After machining one protruding column, the planetary gear support is loosened, rotated 120°, clamped again and positioned. This machining method not only causes complex and tedious machining procedures, but also causes clamping errors when loosening and clamping again, so that the precision of the three protruding columns is difficult to meet the machining requirements. SUMMARY

[0003] The utility model aims at providing a special fixture for turning machining of planetary gear support, which can realize three protruding column machining after one positioning, reduce clamping errors and effectively improve the machining precision of the three protruding columns to meet the product machining requirements.

[0004] To achieve the above-mentioned purpose, the utility model provides a special fixture for turning machining of planetary gear support, which comprises a mounting shaft, the mounting shaft can be mounted on the chuck of the main shaft of the lathe, and further comprises a fixing mechanism.

[0005] The fixing mechanism comprises a fixing disc, an adjusting disc, a limiting table, a limiting ring, a positioning ring, a positioning bolt, a bolt and a tensioning device. The fixing disc is integrally formed with the mounting shaft and located on one side of the mounting shaft. The adjusting disc is detachably connected with the fixing disc and located in the circular cavity on the side of the adjusting disc away from the mounting shaft. The limiting table is integrally formed with the adjusting disc and located on the side of the adjusting disc away from the fixing disc. The positioning ring is arranged on the limiting table. The limiting ring is fixedly connected with the fixing disc and slidably connected with the adjusting disc. The positioning bolt is slidably connected with the adjusting disc and threadedly connected with the fixing disc, and three are arranged at an annular interval of 120°. The bolt is matched with the pin holes arranged at an annular interval of 120° on the fixing disc and the adjusting disc. The tensioning device is arranged on the limiting table.

[0006] The fixing disc has a circular rotating hole.

[0007] The adjusting disc has a circular rotating column that can rotate within the circular rotating hole.

[0008] The tensioning device includes a limiting plate and a tensioning bolt. The limiting plate can abut against the end face of the planetary gear bracket away from the limiting platform. The tensioning bolt is slidably connected to the limiting plate and threadedly connected to the limiting platform.

[0009] The limiting plate and the tensioning bolt can be an integral structure.

[0010] This utility model discloses a special fixture for turning a planetary gear carrier. First, the mounting shaft is installed on the chuck of the lathe spindle, ensuring concentricity between the mounting shaft and the lathe spindle. Then, the end of the planetary gear carrier without the protruding post is engaged with the positioning ring and the limiting table. Next, the planetary gear carrier is fixed to the limiting table using a tensioning device. Then, machining can begin. After one protruding post is machined, the three positioning bolts are removed. Then, the adjusting disc is rotated 120°. After rotation, the pin is inserted into the threaded hole that engages with the positioning bolt, and then rotated to maintain positioning. Then, the three positioning bolts are installed, and the second protruding post can be machined. Finally, after the second protruding post is machined, ... Remove the three positioning bolts and rotate the adjusting plate. Then reinstall the three positioning bolts to proceed with the machining of the third boss. When adjusting the rotation angle of the planetary gear support, the planetary gear support is always fixed on the limiting platform by the tensioning device. Therefore, after rotation, there is no need to reposition the planetary gear support, thus achieving one-time positioning and completing the machining of the three protrusions on the planetary gear support. This effectively ensures the accuracy between the three protrusions after machining, and enables the machining of the three protrusions after one-time positioning in the turning of the planetary gear support. This helps reduce clamping errors and effectively improves the machining accuracy between the three protrusions to meet product processing requirements. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0012] Figure 1 This is a schematic diagram of the overall structure of the special fixture for turning planetary gear support according to this utility model.

[0013] Figure 2 This is a schematic diagram of the structure of the fixed plate of this utility model.

[0014] Figure 3 This is a schematic diagram of the limiting platform of this utility model.

[0015] Figure 4 This is a cross-sectional view of the limiting ring of this utility model.

[0016] In the figure: 101 - mounting shaft, 102 - fixed disc, 103 - adjusting disc, 104 - limiting table, 105 - limiting ring, 106 - positioning ring, 107 - positioning bolt, 108 - bolt, 109 - round rotating hole, 110 - round rotating column, 111 - limiting plate, 112 - tensioning bolt. DETAILED DESCRIPTION

[0017] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, the embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0018] As Figures 1 to 4 shown, wherein Figure 1 It is the overall structure schematic view of the special fixture for turning of planetary gear support, Figure 2 It is the structure schematic view of fixed disc 102, Figure 3 It is the structure schematic view of limiting table 104, Figure 4 It is the sectional view of limiting ring 105, the utility model provides a kind of special fixture for turning of planetary gear support: including mounting shaft 101 and fixed mechanism, the fixed mechanism includes fixed disc 102, adjusting disc 103, limiting table 104, limiting ring 105, positioning ring 106, positioning bolt 107, bolt 108 and tensioning device, the tensioning device includes limiting plate 111 and tensioning bolt 112.The foregoing scheme can be realized three convex column processing after once positioning in the turning of planetary gear support, it is beneficial to reduce clamping error, and effectively improve the machining precision between three convex columns each other to meet product processing requirement, it can be understood that, the foregoing scheme can realize three convex column processing after once positioning of planetary gear support, it is beneficial to reduce clamping error, and effectively improve the machining precision between three convex columns each other.

[0019] In the embodiment, the mounting shaft 101 can be installed on the chuck of lathe spindle, the mounting shaft 101 needs to ensure the concentricity with lathe spindle when being installed on lathe spindle chuck.

[0020] The fixing disc 102 is integrally formed with the mounting shaft 101 and located on one side of the mounting shaft 101, the adjusting disc 103 is detachably connected with the fixing disc 102 and located in a circular cavity on the side of the adjusting disc 103 away from the mounting shaft 101, the limiting table 104 is integrally formed with the adjusting disc 103 and located on the side of the adjusting disc 103 away from the fixing disc 102, the limiting ring 106 is arranged on the limiting table 104, the limiting ring 105 is fixedly connected with the fixing disc 102 and slidably connected with the adjusting disc 103, the positioning bolt 107 is slidably connected with the adjusting disc 103 and threadedly connected with the fixing disc 102, and three are arranged on the fixing disc 102 and the adjusting disc 103 at an annular interval of 120°, the bolt 108 is matched with the pin hole arranged on the fixing disc 102 and the adjusting disc 103 at an annular interval of 120°, and the tensioning device is arranged on the limiting table 104. The fixing disc 102 is integrally formed with the mounting shaft 101, and a sliding cavity for sliding of the adjusting disc 103 is arranged on the side of the fixing disc 102 away from the mounting shaft 101, three threaded holes and pin holes are arranged on the fixing disc 102 at an annular interval of 120°, and the threaded holes and the pin holes are not arranged through, so as to facilitate arrangement of the positioning bolt 107 and the bolt 108, a through hole is arranged on the adjusting disc 103 to facilitate passing of the positioning bolt 107 and the bolt 108, the positioning bolt 107 is in a T-shaped structure, the front side of the end portion of the optical axis is a stepped external thread end portion, the limiting table 104 is integrally arranged on the adjusting disc 103, the limiting ring 106 is arranged on the limiting table 104 and used for mounting and positioning of the planetary gear support, the limiting ring 105 is fixed by a bolt, and the inner circular cavity of the limiting ring 105 is smaller than the outer circular diameter of the adjusting disc 103, so that limiting is realized, the limiting ring 105 is matched with the fixing disc 102, so that the adjusting disc 103 can rotate after being loosened, the bolt 108 is in a state of being removed and not installed during machining, and the positioning bolt 107 and the bolt 108 can be removed without removing the workpiece under cooperation of the length dimension of the limiting table 104, and the tensioning device is used for fixing the planetary gear support on the limiting table 104.

[0021] Secondly, the fixing disc 102 has a circular rotating hole 109.

[0022] Then, the adjusting disc 103 has a circular rotating column 110, and the circular rotating column 110 can rotate in the circular rotating hole 109. By arranging the circular rotating column 110, the stability of the adjusting disc 103 during rotation can be improved.

[0023] Further, the limiting plate 111 can abut on the end face of the planetary gear support away from the limiting table 104; the tensioning bolt 112 is in sliding connection with the limiting plate 111 and is in threaded connection with the limiting table 104. The limiting plate 111 adopts a circular plate and is provided with a through hole in the middle, facilitating the installation of the T-shaped tensioning bolt 112.

[0024] Finally, the limiting plate 111 and the tensioning bolt 112 can adopt an integrated structure. This structure is beneficial to improve the cooperation stability of the limiting plate 111 and the tensioning bolt 112.

[0025] When the planetary gear support is once positioned and then three convex columns are machined, the clamping error is reduced, and the machining precision of the three convex columns is effectively improved. First, the mounting shaft 101 is installed on the chuck of the lathe main shaft, and the concentricity of the mounting shaft 101 and the lathe main shaft is ensured. Then, the end of the planetary gear support on which no convex column is arranged is in abutting connection with the limiting table 104 and the positioning ring 106. The positioning ring 106 allows the end of the planetary gear support to slide in. Further, the planetary gear support is fixed on the limiting table 104 by the tensioning device. Then, machining can be performed. When the three convex columns on the planetary gear support are machined, only the central axis of the first convex column needs to be positioned when the first convex column is machined. After the first convex column is machined, the second and third convex columns are machined. When one convex column is machined, the three positioning bolts 107 are removed. Then, the adjusting disc 103 is rotated by 120°. After rotation, the pin 108 is inserted to rotate the threaded hole in which the positioning bolt 107 is arranged. Then, the three positioning bolts 107 are installed to machine the second convex column. Finally, after the second convex column is machined, the three positioning bolts 107 are removed again, and the adjusting disc 103 is rotated. Then, the three positioning bolts 107 are installed again to machine the third convex column. When the rotation angle of the planetary gear support is adjusted, the planetary gear support is always fixed on the limiting table 104 by the tensioning device. Therefore, the planetary gear support does not need to be positioned again after rotation. Thus, once positioning is realized, and the machining of the three convex columns on the planetary gear support is completed. The precision of the three convex columns relative to each other is effectively ensured. Thus, the turning machining of the planetary gear support can be realized once positioning is realized, the clamping error is reduced, and the machining precision of the three convex columns relative to each other is effectively improved to meet the product machining requirements.

[0026] The above only discloses one or more preferred embodiments of the present application, and cannot limit the scope of the rights of the present application. Those skilled in the art can understand that all or part of the above-mentioned embodiments can be implemented, and equivalent changes made according to the claims of the present application still fall within the scope of the present application.

Claims

1. A lathe turning special fixture for planetary gear support, comprising a mounting shaft, the mounting shaft is mounted on the chuck of lathe spindle, characterized in that: It also comprises a fixing mechanism; The fixing mechanism comprises a fixing disc, an adjusting disc, a limiting table, a limiting ring, a positioning ring, a positioning bolt, a bolt and a tensioning device, the fixing disc is integrally formed with the mounting shaft and located on one side of the mounting shaft, the adjusting disc is detachably connected with the fixing disc and located in the circular cavity on the side of the adjusting disc away from the mounting shaft, the limiting table is integrally formed with the adjusting disc and located on the side of the adjusting disc away from the fixing disc, the positioning ring is arranged on the limiting table, the limiting ring is fixedly connected with the fixing disc and slidably connected with the adjusting disc, the positioning bolt is slidably connected with the adjusting disc and threadedly connected with the fixing disc, and three are arranged on the fixing disc and the adjusting disc at an annular interval of 120°, the bolt is matched with the pin hole arranged on the fixing disc and the adjusting disc at an annular interval of 120°, and the tensioning device is arranged on the limiting table.

2. The lathe turning special fixture for planetary gear support according to claim 1, characterized in that: The fixing disc is provided with a circular rotating hole.

3. The lathe turning special fixture for planetary gear support according to claim 2, characterized in that: The adjusting disc is provided with a circular rotating column, and the circular rotating column is rotatable in the circular rotating hole.

4. The lathe turning special fixture for planetary gear support according to claim 1, characterized in that: The tensioning device comprises a limiting plate and a tensioning bolt, the limiting plate is abuttable against the end face of the planetary gear support on the side away from the limiting table, and the tensioning bolt is slidably connected with the limiting plate and threadedly connected with the limiting table.

5. The jig for turning of the planet carrier as set forth in claim 4, wherein : The limiting plate and the tensioning bolt can adopt an integral structure.

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