Rapid positioning and batch production machining auxiliary tool for thin plate parts

Abstract

The utility model discloses a sheet part rapid positioning batch production processing auxiliary tool which comprises a base and a pressing plate, the pressing plate is arranged on a clamping face of the base, a center positioning hole is formed in the base, a plurality of semi-open type clamping areas are arranged on the base, each clamping area is provided with a positioning face, and the positioning faces are arranged on the base. A plurality of sheet parts are placed in the clamping areas at the same time and are primarily fixed through the pressing plates and the center bolts in the center positioning holes, fixing threaded holes are formed in the clamping areas of the base, and the sheet parts can be secondarily fastened through screws in the fixing threaded holes. According to the utility model, an auxiliary tool capable of reducing clamping times in batches and quickly positioning is adopted, and supplied materials are quickly positioned through four semi-open areas on the tool; clamping and machining of four parts are achieved through the pressing plate and the tool; the part is tightened by a screw midway, so that secondary positioning and alignment of the part are avoided, stress release is realized during processing, and the processing precision of the part is ensured. The auxiliary tool is easy to machine and simple in structure, materials are common and cheap, the auxiliary tool is used for most thin plate type parts with holes, especially parts with high requirements for the hole distance and the flatness, the flatness of the parts can reach 0.03, and the effects of fast positioning, easy clamping, less disassembly, stress relief and batch production are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to an auxiliary tooling for rapid positioning and batch production machining of thin plate parts. Background Art

[0002] Thin plate parts, as mechanical machining parts, are widely used in the aerospace field. Such parts not only have high appearance requirements and strict deformation control, but also need to meet the requirements of rapid batch production. Therefore, higher requirements are put forward for the clamping and positioning of thin plate parts, the innovation of machining methods, and the improvement of machining tooling.

[0003] Milling thin plate parts has always been a recognized difficult problem in the mechanical machining industry. Especially in the case of high precision requirements for parts and urgent production tasks, the conventional inverted pressing plate clamping method not only cannot ensure part deformation, but also has low machining efficiency due to the need to repeatedly invert the pressing plate for clamping, resulting in uneven stress, serious deformation, uneven quality, and inconsistent thickness of the final thin plate parts. At the same time, it does not meet the requirements of rapid batch production, and the production progress of products is easily affected seriously. Summary of the Utility Model

[0004] In view of the above defects or improvement requirements of the prior art, the utility model provides an auxiliary tooling for rapid positioning and batch production machining of thin plate parts.

[0005] To achieve the above object, the utility model is realized by adopting the following technical solutions:

[0006] An auxiliary tooling for rapid positioning and batch production machining of thin plate parts includes a base and a pressing plate. The pressing plate is arranged on the clamping surface of the base. The base is provided with a central positioning hole, and multiple semi-open clamping areas are arranged on the base. Each clamping area is provided with a positioning surface. Multiple thin plate parts are placed in each clamping area at the same time and are initially fixed by the pressing plate and the central bolt in the central positioning hole.

[0007] As a preference of the above solution, fixing threaded holes are opened in each clamping area of the base, and the thin plate parts are further fastened by screws in the fixing threaded holes.

[0008] As a preference of the above solution, a U-shaped groove is opened on the base, and the base is installed on the machine tool workbench by bolts in the U-shaped groove.

[0009] As a preference of the above solution, the base evenly divides the clamping surface into multiple clamping areas through steps.

[0010] As a preference of the above solution, the pressing plate is in a linear shape or a convex shape.

[0011] As a preference of the above solution, long holes for fastening screws to pass through are opened on the pressing plate.

[0012] Due to the above structure, the beneficial effects of the present utility model are as follows:

[0013] The present utility model adopts an auxiliary tooling for batch reduction of clamping times and rapid positioning. The incoming materials are quickly positioned through four semi-open areas on the tooling; the clamping and processing of 4 parts are realized by using the pressing plate and the tooling; during the process, screws are used to tighten the parts to avoid secondary positioning and alignment of the parts, and at the same time, stress release is realized during processing, ensuring the machining accuracy of the parts. The auxiliary tooling is simple to process, has a simple structure, and common and cheap materials. It is used for most thin plate parts with holes, especially parts with high requirements for hole pitch and flatness. The flatness of the parts can reach 0.03, achieving the effects of "fast positioning, easy clamping, few dismountings, stress elimination, and batch production". BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments.

[0015] Figure 1 is a structural schematic diagram of the present utility model;

[0016] Figure 2 is a schematic diagram of step C1;

[0017] Figure 3 is a schematic diagram of step C3;

[0018] Figure 4 is a schematic diagram of step C4. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The following will clearly and completely describe the technical solutions of the present utility model in conjunction with the drawings of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] As Figure 1 shown, this embodiment provides an auxiliary tooling for rapid positioning and batch production of thin plate parts, including a base 1 and a pressing plate 2. The pressing plate 2 is arranged on the clamping surface of the base 1. The base 1 is provided with a central positioning hole 11, and a plurality of semi-open clamping areas are arranged on the base 1. Each clamping area is provided with a positioning surface 12. A plurality of thin plate parts are simultaneously placed in each clamping area and are initially fixed by the pressing plate 2 and a central bolt 3 in the central positioning hole 11.

[0021] In this embodiment, the base 1 is square as a whole, and the material is preferably aluminum alloy. The material clamping area is four semi-open areas. The dimensions of the four main areas are designed to be larger than the outer dimensions of the incoming materials, for batch production and rapid positioning of the incoming materials. The two vertical sides of the open area are positioning surfaces 12 for positioning the blanks.

[0022] In this embodiment, a through hole with M16 thread is machined at the center of the base 1, namely the center positioning hole 11, which is used to complete the clamping of the incoming materials together with the pressing plate 2.

[0023] In this embodiment, an appropriate number of fixing threaded holes 13 are distributed according to the parts within each clamping area of the base 1. The positions of the threaded holes are distributed diagonally, and the hole pitch corresponds to the hole pitch of the parts. The thin plate parts are further fastened by screws and washers within the fixing threaded holes 13.

[0024] In this embodiment, a U-shaped groove 14 is formed on the base 1, and it is reasonably installed on the machine tool workbench by adjusting to a suitable position with bolts within the U-shaped groove 14, realizing the fixation and adjustment of the base 1 and the machine tool table.

[0025] In this embodiment, the base 1 evenly divides the clamping surface into multiple clamping areas through the step 15, and the height of the step 15 is about 3 / 4 of the thickness of the incoming materials.

[0026] In this embodiment, the pressing plate 2 is in a shape of one character or convex shape, and conventional dimensions can be adopted according to the actual situation.

[0027] In this embodiment, a long hole 21 for the fastening screw to pass through is formed on the pressing plate 2.

[0028] The specific steps for clamping and machining the thin plate parts are as follows:

[0029] A. Blanking

[0030] Blank the material blank that meets the clamping and machining allowance of the thin plate parts;

[0031] B. Auxiliary tooling equipment

[0032] According to the outer shape of the thin plate part drawing, prepare the auxiliary tooling by machining. Use a dial indicator to straighten one side of the base 1, align the center positioning hole 11 of the base 1, and fixedly install it on the machine tool workbench through the bolts within the U-shaped grooves 14 on both sides of the base 1;

[0033] C. Machining

[0034] C1. As Figure 2 shown, clamp 4 pieces of incoming materials (thin plate parts 10) at one time with the pressing plate 2. Place the 4 pieces of incoming materials into the four clamping areas of the tooling respectively, position them close to the two right-angle sides within each area, and complete the initial clamping and positioning of the incoming materials with 8 pressing plates 2 and the center bolt 3 and washer 4, and fix the pressing plate 2 with screws;

[0035] C2. Simultaneously machine all the round holes and threads of the 4 blanks according to the thin plate part drawing;

[0036] C3. As Figure 3As shown, the screw Ⅰ 5 passes through the round hole of the thin plate part, and the thin plate part is secondarily fastened through the corresponding fixed threaded hole 13 in the clamping area of the base 1, and the remaining positions of the part are machined. The side groove of the part is machined according to the drawing;

[0037] C4. As Figure 4 As shown, the screw Ⅱ 6 passes through the round hole of the thin plate part, and the thin plate part is fastened again through the corresponding fixed threaded hole 13 in the clamping area of the base 1, and the outer shape of the part is machined to meet the dimensional requirements of the drawing;

[0038] C5. After the machining is completed, remove the screws (screw Ⅰ 5, screw Ⅱ 6) and the pressing plate 2 and take the part for cleaning.

[0039] This embodiment adopts an auxiliary tooling for batch reduction of clamping times and rapid positioning. The incoming materials are quickly positioned through four semi-open areas on the tooling; the clamping and machining of 4 parts are realized by using the pressing plate and the tooling; the screws are used to tighten the parts midway to avoid secondary positioning and alignment of the parts, and at the same time, stress release is realized during machining, ensuring the machining accuracy of the parts. The auxiliary tooling is simple to machine, has a simple structure, common and cheap materials, and is used for most thin plate parts with holes, especially for parts with higher requirements for hole pitch and flatness. The flatness of the parts can reach 0.03, achieving the effects of "fast positioning, easy clamping, few dismountings, stress elimination, and batch production".

[0040] The above is only the preferred embodiment of the present invention and is not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary tooling for rapid positioning and batch production machining of thin plate parts, characterized in that: It includes a base and a pressing plate. The pressing plate is arranged on the clamping surface of the base. The base is provided with a central positioning hole, and multiple semi-open clamping areas are arranged on the base. Each clamping area is provided with a positioning surface. Multiple thin plate parts are simultaneously placed in each clamping area and are initially fixed by the pressing plate and the central bolt in the central positioning hole.

2. The rapid positioning batch production processing auxiliary tooling for a thin plate part according to claim 1, characterized in that: Fixed threaded holes are opened in each clamping area of the base, and the thin plate parts are re-fastened by screws in the fixed threaded holes.

3. The rapid positioning batch production processing auxiliary tooling for a thin plate part according to claim 1, characterized in that: A U-shaped groove is opened on the base, and it is installed on the machine tool workbench through the bolt in the U-shaped groove.

4. An auxiliary tooling for rapid positioning and batch production processing of thin plate parts according to claim 1, characterized in that: The base evenly divides the clamping surface into multiple clamping areas through steps.

5. The rapid positioning batch production processing auxiliary tooling for a thin plate part according to claim 1, characterized in that: The pressing plate is in a shape of a straight bar or a convex shape.

6. The rapid positioning batch production processing auxiliary tooling for a thin plate part according to claim 1, wherein: Long holes for fastening screws to pass through are opened on the pressing plate.

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