A clamping structure for machining large motor bearing box plane with vertical lathe

Abstract

The utility model discloses a kind of clamping structures for processing large motor bearing box plane with vertical lathe, multiple bearing pedestals are evenly distributed along the ring direction on the rotary workbench of vertical lathe, the notch on bearing pedestal, pull rod and compression beam cooperation can fix bearing box on bearing pedestal, the end face of specific bearing box is upward, lower part is in notch, compression beam is transversely placed in half bearing box middle part, compression beam two ends are sleeved on pull rod upper end, then tighten compression nut, make compression beam press bearing box, since bearing box is provided with semicircular hole, compression beam is located in semicircular hole and will not affect end face processing, compression beam is in hole bottom also can more stably fix bearing box, utilize multiple bearing pedestals can be realized in rotary workbench fixed setting multiple bearings, processing simultaneously, compared with traditional mode, improve efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of motor bearing housing fixtures, and particularly relates to a clamping structure for machining the plane of a large motor bearing housing using a vertical lathe. Background Technology

[0002] The surface machining technology for large motor bearing housings (such as wind turbine bearing housings with diameters exceeding 2m) is a crucial step in the manufacturing of core motor components. A large motor bearing housing is generally a semi-circular disc structure with semi-circular holes and slots in the center for mounting the bearings. The process requires machining the end faces of the mating surfaces between the bearing housing and the motor bearing cover, demanding a flatness ≤0.02mm / m and a surface roughness Ra ≤1.6μm. The sides of the bearing housing are equipped with reinforcing ribs or protrusions, and the end faces also have outer edges.

[0003] Traditional technology uses CNC boring machines for machining: because boring machines involve rotating the boring tool or moving the workpiece, and only one workpiece can be processed at a time, it is still inefficient when machining the end face of large motor bearing housings. Utility Model Content

[0004] (1) Technical problem to be solved: A clamping structure for machining the plane of a large motor bearing box using a vertical lathe, which can be machined using a vertical lathe.

[0005] (2) The technical solution adopted by this utility model is as follows:

[0006] A clamping structure for machining the flat surface of a large motor bearing housing using a vertical lathe includes a rotary table of the vertical lathe. Multiple bearing bases are evenly distributed circumferentially on the rotary table, and the bearing bases are fixedly mounted to the rotary table. Each bearing base has a slot for placing the bearing housing. A pull rod is provided in the middle of the bearing base and on both sides of the slot. The lower end of the pull rod is connected to the bearing base via a limiting structure. The upper end of each pull rod is connected to a pressure beam. The pressure beam has through holes at positions corresponding to the pull rods, and the pull rods pass through these through holes. A clamping nut is threaded onto the upper end of each pull rod.

[0007] A further technical solution is that the limiting structure includes a first limiting groove in the shape of a T on the supporting base, a limiting block matching the first limiting groove at the lower end of the pull rod, and the through hole is a long groove.

[0008] A further technical solution is that the bearing base is provided with a first support member that can abut against the bottom edge of the bearing housing plane.

[0009] A further technical solution is that a second support member capable of supporting the side of the bearing housing is provided on the bearing base.

[0010] (3) Due to the adoption of the above technical solution, the beneficial effect of this utility model is: by uniformly arranging multiple bearing bases along the circumference on the rotary worktable of the vertical lathe, the slots, tie rods and pressure beams on the bearing bases can fix the bearing box on the bearing bases. Specifically, the end face of the bearing box is facing upward and the lower part is located in the slot. The pressure beam is placed horizontally in the middle of the half bearing box, and the two ends of the pressure beam are sleeved on the upper end of the tie rod. Then the clamping nut is tightened so that the pressure beam presses down on the bearing box. Since the bearing box has a semi-circular hole, the pressure beam is located in the semi-circular hole and will not affect the end face processing. The pressure beam is at the bottom of the hole and can also fix the bearing box more stably. By using multiple bearing bases, multiple bearings can be fixed on the rotary worktable and processed at the same time. Compared with the traditional method, the efficiency is improved. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0012] Figure 2 yes Figure 1 Schematic diagram of the structure at point A;

[0013] Figure 3 This is a schematic diagram of the structure of the bearing housing and the bearing base described in this utility model;

[0014] Figure 4 This is a schematic diagram of the bearing housing and bearing base from another perspective of the present invention;

[0015] Figure 5 This is a schematic diagram of the structure of the support base described in this utility model;

[0016] Figure 6 This is a bottom view of the bearing housing structure described in this utility model;

[0017] Figure 7 This is a schematic diagram of the left side of the bearing housing structure described in this utility model;

[0018] Figure 8 This is a schematic diagram of the connection structure between the bearing housing and the bearing cover described in this utility model. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0020] like Figures 1-8As shown. A clamping structure for machining the plane of a large motor bearing housing using a vertical lathe includes a rotary table 2 of the vertical lathe 1. Multiple bearing bases 3 are evenly distributed circumferentially on the rotary table 2. The bearing bases 3 are fixedly mounted to the rotary table 2. Each bearing base 3 has a slot 4 for placing the bearing housing 20. A pull rod 5 is provided in the middle of the bearing base 3 and on both sides of the slot 4. The lower end of the pull rod 5 is connected to the bearing base 3 via a limiting structure. The upper end of each pull rod 5 is connected to a pressure beam 6. The pressure beam 6 has through holes 7 at positions corresponding to the pull rods 5. The pull rods 5 pass through the through holes 7 at the corresponding positions. A clamping nut 8 is threadedly connected to the upper end of each pull rod 5.

[0021] The working principle is as follows: The bearing base 3 is fixed to the rotary table 2 with bolts (at least four bolts pass through the bearing base 3 and are threaded to the rotary table 2, and the rotary table 2 is provided with threaded holes corresponding to the bolts). The length of the bearing base 3 is arranged radially along the rotary table 2. The end face of the bearing housing 20 is facing upwards, and the lower part is located in the groove 4. The pressure beam 6 is placed horizontally in the middle of the bearing housing 20. The two ends of the pressure beam 6 are sleeved on the upper end of the tie rod 5. Then, the clamping nut 8 is tightened so that the pressure beam 6 presses down on the bearing housing 20. Since the bearing housing 20 has a semi-circular hole, the pressure beam 6 is located in the semi-circular hole and will not affect the end face processing. The pressure beam 6 is at the bottom of the hole and can also fix the bearing housing 20 more stably. Then, the vertical lathe 1 is started and the rotary table 2 starts to rotate. The position of the cutting tool of the vertical lathe 1 is controllable in both the horizontal and vertical directions, so the end face of the splice seam of the semi-circular disc can be processed.

[0022] The side of the bearing housing 20 is provided with reinforcing ribs 13 or protrusions 14. The reinforcing ribs 13 or protrusions 14 exceed the width of the slot 4. When half of the bearing housing 20 is inserted into the slot 4, these reinforcing ribs 13 or protrusions 14 will hold the bearing housing 20 in place, thereby supporting the bearing housing 20.

[0023] The limiting structure includes a T-shaped first limiting groove 9 on the bearing base 3, located in the middle of the bearing base 3 and extending in the width direction. A limiting stop 10 matching the first limiting groove 9 is provided at the lower end of the tie rod 5. The through hole 7 is a long slot structure. This structure facilitates the connection or separation of the tie rod 5 from the bearing base 3 and the pressure beam 6.

[0024] The bearing base 3 is provided with a first support member 11 that can support the bottom of the end face edge 15 of the bearing housing 20. The first support member 11 is a threaded telescopic rod, which includes a threaded sleeve and a screw threaded inside the threaded sleeve. A top head is provided at the upper end of the screw. The bottom of the threaded sleeve is fixed to the bearing base 3 (by bolts or welding). The screw can support the bearing housing 20. There is also the bottom surface of the outer edge 15 at the splice seam of the bearing housing 20, which further enhances the support stability of the bearing housing 20.

[0025] A second support member 12 is provided on the bearing base 3 to support the side of the bearing housing 20. The support member includes a second limiting groove 16 with a T-shaped structure opened on the bearing base 3 along the length of the groove 4. A matching locking block 17 is provided in the second limiting groove 16. A support 18 is provided on the top of the locking block 17. A threaded hole is provided on the support 18. A tightening screw 19 is threaded into the threaded hole. The end of the tightening screw 19 pushes against the side of the bearing housing 20, further enhancing the support stability of the bearing housing 20.

[0026] The above are merely preferred embodiments of this utility model.

Claims

1. A clamping structure for machining the plane of a large motor bearing housing using a vertical lathe, comprising a rotary table (2) of a vertical lathe (1), characterized in that, Multiple bearing bases (3) are evenly distributed around the rotary worktable (2). The bearing bases (3) are fixedly installed on the rotary worktable (2). The bearing bases (3) are provided with slots (4) for placing bearing boxes (20). A pull rod (5) is provided in the middle of the bearing base (3) and on both sides of the slot (4). The lower end of the pull rod (5) is connected to the bearing base (3) through a limiting structure. The upper end of the pull rod (5) is connected to a pressure beam (6). The pressure beam (6) is provided with a through hole (7) at the position corresponding to the pull rod (5). The pull rod (5) passes through the through hole (7) at the corresponding position. The upper end of the pull rod (5) is threadedly connected to a clamping nut (8).

2. The clamping structure for machining the plane of a large motor bearing housing on a vertical lathe according to claim 1, characterized in that, The limiting structure includes a first limiting groove (9) in a T-shape on the bearing base (3), a limiting block (10) matching the first limiting groove (9) at the lower end of the pull rod (5), and a through hole (7) in the form of a long groove.

3. The clamping structure for machining the plane of a large motor bearing housing on a vertical lathe according to claim 1, characterized in that, The bearing base (3) is provided with a first support member (11) that can hold the bottom of the plane edge (15) of the bearing box (20).

4. The clamping structure for machining the plane of a large motor bearing housing on a vertical lathe according to claim 1, characterized in that, The bearing base (3) is provided with a second support member (12) that can support the side of the bearing box (20).

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