Auxiliary machining device for stepped hole of bearing mounting seat

Abstract

An auxiliary machining device for a stepped hole of a bearing mounting seat comprises the bearing mounting seat, a quick-change lining and a pressing plate, a clamping through hole is prefabricated in the middle of the quick-change lining, and the outer circle of the quick-change lining is embedded in a bearing inner hole of the bearing mounting seat so as to be matched with the bearing inner hole of the bearing mounting seat, so that the machining rigidity of parts is improved; a clamping fastener used for fastening the quick-change lining to the working table is mounted in the clamping through hole, and a pressing plate used for fastening a part is in lap joint with the edge of the outer side of a bearing hole opening of the bearing mounting base. According to the utility model, the quick positioning and clamping of workpieces can be realized, the feasibility is strong, and the batch production clamping efficiency of parts is greatly improved; and meanwhile, the direction of clamping force is changed fundamentally, the boring quality of the machine tool can be ensured, and the batch production waste and defective rate is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of aviation machinery parts processing devices, in particular to an auxiliary processing device for a stepped hole of a bearing mounting seat. Background Art

[0002] Bearing hole machining is crucial for effective bearing installation and has long been a challenging and challenging issue in the machining of aviation machinery parts. In actual parts production, a common problem encountered is the machining of the end bearing holes, primarily used in aircraft transmissions. The challenge lies in achieving high-precision dimensional requirements for both ends while also maintaining proper coaxiality for subsequent aircraft component installation. However, in practice, the traditional clamping method utilizes specialized tooling to bore the bearing holes using radial clamping. However, production has found that this method produces uneven wall thickness, with a significant portion exhibiting an elliptical shape and failing to meet dimensional and coaxial requirements. This results in scrapped parts and quality issues, hindering installation. This is primarily due to the use of radial clamping during bearing hole machining, which results in high radial clamping forces and insufficient overall part rigidity. Upon release from the clamp after boring, stress release occurs, causing the bearing holes to become elliptical and out of tolerance, leading to scrap. Utility Model Content

[0003] The technical problem solved by the present invention is to provide an auxiliary processing device for a stepped hole of a bearing mounting seat, so as to solve the problems in the above-mentioned background technology.

[0004] The technical problem solved by the present invention is achieved by the following technical solutions:

[0005] A bearing mounting seat stepped hole auxiliary processing device includes a bearing mounting seat, a quick-change bushing and a pressure plate, wherein a clamping through hole is prefabricated in the middle of the quick-change bushing, and the outer circle of the quick-change bushing is nested in the bearing inner hole of the bearing mounting seat to cooperate with the bearing inner hole of the bearing mounting seat to increase the processing rigidity of the part; a clamping fastener for fixing the quick-change bushing to the work table is installed in the clamping through hole, and a pressure plate for fixing the part is overlapped on the outer edge of the bearing hole opening of the bearing mounting seat.

[0006] In the present invention, a bearing block is provided at the bottom of the quick-change bushing, and a through hole is provided on the bearing block for clamping fasteners to pass through; the bearing block is used to support the quick-change bushing, so that the quick-change bushing can be fastened to the work surface by clamping fasteners.

[0007] In the present invention, the quick-change bushing on the upper part of the clamping through hole is provided with a support platform for supporting the end of the clamping fastener. The clamping fastener is inserted into the clamping through hole of the quick-change bushing, and the end of the clamping fastener is placed on the support platform, thereby fastening the quick-change bushing to the work surface.

[0008] In the present invention, a pressure plate is symmetrically overlapped on the outer edge of the bearing hole opening of the bearing mounting seat, and the pressure plate is a trapezoidal structure. A groove is provided on the trapezoidal structure for axially clamping the bearing hole. Beneficial effects

[0009] 1) The utility model can realize the rapid positioning and clamping of workpieces, has strong feasibility, and greatly improves the efficiency of batch production clamping of parts;

[0010] 2) The utility model fundamentally changes the direction of the clamping force, which can ensure the quality of boring processing of machine tools and effectively reduce the rate of defective products in batch production;

[0011] 3) The application principle of the utility model is easy to understand, the operation and maintenance of the workers are convenient and quick, the production effect is obvious, and the batch production and processing efficiency is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a front view of the clamping use of a preferred embodiment of the present utility model.

[0013] Figure 2 This is a top view of the clamping use of a preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0015] See also Figures 1 and 2 A bearing mounting seat stepped hole auxiliary processing device includes a bearing mounting seat 1, a quick-change bushing 2, a clamping bolt 3, a clamping through hole 4 and a pressure plate 5, wherein the quick-change bushing 2 is prefabricated with a clamping through hole 4 in the middle part, and the outer circle of the quick-change bushing 2 is nested in the bearing inner hole of the bearing mounting seat 1 to cooperate with the bearing inner hole of the bearing mounting seat 1 to increase the rigidity of part processing; a clamping bolt 3 is installed in the clamping through hole 4 for fastening the quick-change bushing 2 to the work table, and a pressure plate 5 is overlapped on the outer edge of the bearing hole opening of the bearing mounting seat 1 for fastening the parts, so that the bearing hole can be processed.

[0016] In this embodiment, a bearing block is provided at the bottom of the quick-change bushing 2, and a through hole is provided on the bearing block for the clamping bolt 3 to pass through; the bearing block is used to support the quick-change bushing 2, so that the quick-change bushing 2 can be fastened to the work surface by the clamping bolt 3.

[0017] In this embodiment, the quick-change bushing 2 above the clamping through hole 4 is provided with a support platform for supporting the end of the clamping bolt 3. The clamping bolt 3 is inserted into the clamping through hole 3 of the quick-change bushing 2, and the end of the clamping bolt 3 is placed on the support platform, thereby fastening the quick-change bushing 2 to the work surface.

[0018] In this embodiment, a pressure plate 5 is symmetrically overlapped on the outer edge of the bearing hole opening of the bearing mounting seat 1, and the pressure plate 5 is a trapezoidal structure. A groove is provided on the trapezoidal structure for axially clamping the bearing hole.

[0019] A bearing mounting seat stepped hole auxiliary processing device, the use steps are as follows:

[0020] Step 1: Fasten the device by inserting the clamping bolt 3 into the clamping through hole 3 of the quick-change bushing 2 to fasten the quick-change bushing 2 to the work surface;

[0021] Step 2: Positioning and clamping the parts. Insert the matching quick-change bushing 2 into the inner hole of the bearing mounting seat 1 to achieve positioning and increase the processing rigidity of the parts. After positioning, place the pressure plate 5 on the outer edge of the bearing hole to complete the final clamping of the parts, so as to achieve the transformation of the radial clamping force of the bearing hole to the axial clamping force, thereby reducing the risk of the bearing hole becoming elliptical and scrapped.

[0022] Step 3: Process the bearing hole. When boring the precision bearing hole, the hole center position can be set in advance by calibrating the outer circle of the quick-change bushing 2. The depth of the processed hole is guaranteed by the Z value of the machine tool, which can ensure that the single-side bearing hole is processed and formed in one time; similarly, the bearing hole on the other side can be processed by turning around. With the same set of equipment, the coaxiality of the bearing holes at both ends of the bearing mounting seat is also guaranteed.

[0023] Step 4: Remove the parts and inspect the delivery.

[0024] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A bearing mounting seat stepped hole auxiliary processing device, comprising a bearing mounting seat, a quick-change bushing and a pressure plate, characterized in that: A clamping through hole is prefabricated in the middle of the quick-change bushing, and the outer circle of the quick-change bushing is nested in the bearing inner hole of the bearing mounting seat. A clamping fastener for fixing the quick-change bushing to the work table is installed in the clamping through hole, and a pressure plate for fastening parts is overlapped on the outer edge of the bearing hole opening of the bearing mounting seat.

2. The bearing mounting seat stepped hole auxiliary processing device according to claim 1, characterized in that: A bearing block is provided at the bottom of the quick-change bushing, and a through hole for clamping a fastener is provided on the bearing block.

3. The bearing mounting seat stepped hole auxiliary processing device according to claim 1, characterized in that: The quick-change bushing on the upper portion of the clamping through hole is provided with a support platform for supporting the end of the clamping fastener.

4. The bearing mounting seat stepped hole auxiliary processing device according to claim 1, characterized in that: The outer edge of the bearing hole opening of the bearing mounting seat is symmetrically overlapped with a pressure plate.

5. The bearing mounting seat stepped hole auxiliary processing device according to claim 4, characterized in that: The pressing plate is a trapezoidal structure, and a groove is provided on the trapezoidal structure.

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