Boring device for bearing hole of main speed reducer shell of drive axle

Abstract

The utility model discloses a boring device for a bearing hole of a main speed reducer shell of a drive axle. The boring device is characterized by comprising a base, a scrap guide vertical plate, a quick-change positioning plate, a pressing device, a main vertical plate, a positioning block and a positioning pin, the main vertical plate and the chip guide vertical plate are vertically arranged on the base and are fixed through bolts, and the quick-change positioning plate is arranged on the main vertical plate and the chip guide vertical plate and is respectively fixed with the main vertical plate and the chip guide vertical plate through bolts; the quick-change positioning plates are rectangular, arc-shaped notches are formed in the opposite sides of the two quick-change positioning plates, and positioning pins matched with flange holes of the main speed reducer shell and positioning blocks used for adjusting the height of the main speed reducer shell are arranged on the edges of the notches. The boring device is easy to operate, suitable for boring bearing holes of differential mechanisms of shells of various main speed reducers, high in efficiency and low in cost, and scrap iron is easy to collect and clean.

Description

Technical Field

[0001] The utility model relates to a device for boring a bearing hole of a main reducer housing of a drive axle, and belongs to the technical field of processing and manufacturing automobile parts. Background Art

[0002] As one of the five major assembly components of a car, the rear drive axle of a car carries the body and transmits power. The key power transmission function is achieved through the core component, the main reducer assembly. Since our company's drive axle products are aimed at many models of different domestic vehicle manufacturers, the number of drive axle product types and the number of matching main reducer housing varieties are very large, and production also requires rapid switching of multiple product varieties. If dedicated tooling is developed for each product, it may lead to high investment costs, the need for a large tooling storage area next to the production line, and long tooling change time during product switching. In addition, the large amount of iron chips flying during the processing of the horizontal boring machine makes the production environment dirty and difficult to clean.

[0003] Therefore, a processing tooling with simple design, low cost, good applicability and easy cleaning of iron chips is needed to adapt to the processing operations of multiple varieties and rapid switching. Utility Model Content

[0004] The purpose of this utility model is to provide a device for boring bearing holes of a main reducer housing of a drive axle. The device is used in conjunction with a standard bedroom boring machine. It has strong versatility and low requirements on equipment model and specification configuration. It can adapt to the processing of different products by replacing the positioning subassembly, reducing the debugging time of the device, improving the utilization rate and processing efficiency, and at the same time improving the cleanliness of the processing area.

[0005] The technical solution adopted by the utility model is: a device for boring bearing holes of a main reducer housing of a drive axle, characterized by comprising a base, a chip guide plate, a quick-change positioning plate, a clamping device, a main plate, a positioning block, and a positioning pin;

[0006] The main vertical plate and the chip guide vertical plate are vertically arranged on the base and fixed by bolts, and the quick-change positioning plate is arranged on the main vertical plate and the chip guide vertical plate and fixed to the main vertical plate and the chip guide vertical plate by bolts respectively;

[0007] The quick-change positioning plates are rectangular, and arc-shaped notches are set on opposite sides of the two quick-change positioning plates. Positioning pins that match the flange holes of the main reducer housing and positioning blocks for adjusting the height of the main reducer housing are set on the edges of the notches.

[0008] The clamping device includes a rectangular clamping block, which is sleeved on the clamping bolt. The lower end of the clamping bolt is connected to the quick-change positioning plate, and the upper part is provided with a clamping nut.

[0009] Furthermore: a chip discharge port is provided below the chip guide vertical plate.

[0010] Furthermore: the positioning pin is connected and fixed to the quick-change positioning plate through interference fit.

[0011] Furthermore: the lower end of the clamping bolt is threadedly connected or welded to the quick-change positioning plate.

[0012] Further: U-shaped grooves matching with the connecting bolts are provided on both sides of the base.

[0013] The beneficial effects of this utility model are as follows: The flange hole of the final reducer housing is mated with a locating pin, which is then placed on the upper surface of the locating block. A pneumatic wrench is then used to tighten the upper nut of the clamping device against the final reducer housing, thereby fully defining all six degrees of freedom of the final reducer housing. The boring machine is then activated to automatically perform machining. This utility model is simple to operate and is suitable for boring differential bearing holes in a wide variety of final reducer housings. It offers high efficiency, low cost, and easy collection and removal of scrap metal. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model in a coordinated state;

[0015] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 3 is a schematic diagram of the base structure;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model.

[0018] Explanation of the serial numbers in the figure: 1 base, 2 chip guide plate, 3 quick-change positioning plate, 4 clamping device, 5 main reducer housing, 6 main plate, 7 positioning block, 8 positioning pin, 9 positioning pin hole, 10 countersunk bolt hole. DETAILED DESCRIPTION

[0019] like Figure 1-4The present invention shows a device for boring bearing holes in a drive axle main reducer housing, comprising a base 1, a chip guide plate 2, a quick-change positioning plate 3, a clamping device 4, a main reducer housing 5, a main plate 6, a positioning block 7, and a positioning pin 8. The base 1 is fixed to the boring machine workbench by bolts at four locations. The chip guide plate 2 and the main plate 6 are bolted together at the top, and the chip guide plate 2 and the main plate 6 are fixed together by bolts. A quick-change positioning plate 3 is provided above, which is fixed to the chip guide plate 2 and the main plate 6 by bolts. The positioning pin 8 on the main plate is used to fit the clearance between the flange hole of the main reducer housing 5, and the positioning block 7 ensures the plane positioning accuracy of the main reducer housing 5. The flange of the main reducer housing 5 is clamped by the clamping device 4, thereby achieving the installation and positioning of the workpiece. After the workpiece is installed, the bearing hole can be bored. The iron chips generated during the process fall into the frame and are cleared from the chip guide hole 21 on the chip guide plate 2.

[0020] Preferably, the clamping device includes a clamping bolt 42 welded or threaded to the quick-change positioning plate, a clamping block 41 sleeved on the clamping bolt, and a balancing block 43 mounted on one side of the clamping block. A clamping nut is mounted on the clamping bolt. The balancing block is positioned outside the clamping bolt (with the main reducer housing inside) and is at the same height as the upper edge of the main reducer housing flange. This allows the clamping block to remain as stable as possible when the clamping nut is tightened, improving the clamping effect.

[0021] Preferably, the quick-change positioning plate 3 is designed with four countersunk holes for fast threaded connection and fixation with the chip guide plate 2 and the main plate 6. According to the different specifications of the main reducer housing, usually only the corresponding quick-change positioning plate 3 needs to be replaced.

[0022] Preferably, the tooling can be quickly switched by removing a total of 8 bolts on the left and right quick-change positioning plates 3 .

[0023] Preferably, the base 1 is designed with four U-shaped grooves to facilitate connection with the boring machine table. The lower part of the base 1 is provided with ten countersunk bolt holes 10 for connecting with the chip guide plate 2 and the main plate 6, and four positioning pin holes 9 for interference fit with the main plate 6. The upper and lower surfaces are smoothed by a grinder to ensure the overall positioning accuracy of the tooling.

[0024] Preferably, the positioning block 7 and positioning pin 8 are made of alloy steel and are heat-treated and tempered. By disassembling and assembling the eight bolts connecting the quick-change positioning plate 3 to the main vertical plate 6 and the chip guide vertical plate 2, the positioning block 7, the clamping device 4, the positioning pin 8, and the quick-change positioning plate 3 can be quickly assembled and disassembled. This not only enables rapid model changeover but also reduces storage space after disassembly.

[0025] Working process: The base 1 is fixed to the boring machine workbench. The flange surface of the main reducer housing 5 is placed on the positioning block 7. The flange hole of the main reducer housing is loosely matched with the positioning pin 8. The clamping device 4 is tightened with a pneumatic wrench. The boring machine is started to automatically bore the bearing hole of the main reducer housing 5.

[0026] This new design utilizes a quick-change positioning plate, making it easier for production line operators to bore the bearing holes in the main reducer housing while reducing the time and effort required to change tooling. The integrated chip guide plate and main plate provide effective rigidity while facilitating chip removal and maintaining a hygienic production area. This solution offers low tooling manufacturing costs, convenient operation, and the ability to adapt to product changes at any time.

Claims

1. A device for boring bearing holes of a drive axle main reducer housing, characterized by: It includes a base (1), a chip guide plate (2), a quick-change positioning plate (3), a clamping device (4), a main plate (6), a positioning block (7), and a positioning pin (8); The main vertical plate (6) and the chip guide vertical plate (2) are vertically arranged on the base (1) and fixed by bolts, and the quick-change positioning plate (3) is arranged on the main vertical plate (6) and the chip guide vertical plate (2) and fixed to the main vertical plate (6) and the chip guide vertical plate (2) by bolts respectively; The quick-change positioning plates (3) are rectangular, and arc-shaped notches are provided on opposite sides of the two quick-change positioning plates (3). Positioning pins (8) that match the flange holes of the main reducer housing (5) and positioning blocks (7) for adjusting the height of the main reducer housing (5) are provided at the edges of the notches. The clamping device (4) comprises a rectangular clamping block, which is sleeved on a clamping bolt. The lower end of the clamping bolt is connected to the quick-change positioning plate (3), and a clamping nut is provided on the upper portion.

2. The device for boring a bearing hole of a drive axle final reducer housing according to claim 1, characterized in that: A chip discharge opening is provided below the chip guide vertical plate (2).

3. The device for boring a bearing hole of a drive axle final reducer housing according to claim 1, characterized in that: The positioning pin (8) is connected and fixed to the quick-change positioning plate (3) through interference fit.

4. The device for boring a bearing hole of a drive axle final reducer housing according to claim 1, characterized in that: The lower end of the clamping bolt is threadedly connected to the quick-change positioning plate (3) or fixed by welding.

5. The device for boring bearing holes of a drive axle final reducer housing according to claim 1, characterized in that: U-shaped grooves matching the connecting bolts are provided on both sides of the base (1).

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