Multilateral inner hole machining tool

Abstract

The utility model relates to a multilateral inner hole machining tool which comprises a slotting tool, an inner hole machining tool and an outer hole machining tool. The slotting tool is sequentially divided into a guiding section, a machining section and a pressurizing section from bottom to top. The machining section is matched with a workpiece inner hole of a machined workpiece in shape, the pressurizing section is matched with an oil press pressing plate used for installing a slotting tool, and the part fixing tool is provided with a workpiece installing hole used for installing the machined workpiece and a slotting tool via hole allowing the slotting tool to pass through. U-shaped mounting grooves are formed in the left end and the right end of the part fixing tool, so that the part fixing tool is fixed to an oil press workbench. According to the multi-edge inner hole machining tool, the problem that a multi-edge inner hole is difficult to machine is solved, the machining efficiency and precision of the multi-edge inner hole are improved, and the machining tool solves the problem of rapid machining of an asymmetric multi-edge inner hole.

Description

Technical Field

[0001] The utility model relates to the technical field of parts processing, in particular to a tool for processing a polygonal inner hole. Background Art

[0002] For high-precision polygonal internal hole processing, a drilling machine is generally used to first machine the wire holes in the inner hole processing area of the workpiece, and then the workpiece is processed into shape by a precision slow-feed wire cutting machine. This requires a large investment, high cost, and low efficiency. Alternatively, medium-feed wire cutting is used to form the workpiece, and then the workpiece is ground by a fitter. However, this method has relatively low efficiency, is difficult to grind, and has difficulty in controlling the shape, position, size, and surface roughness. Utility Model Content

[0003] The purpose of the utility model is to provide a multi-sided inner hole processing tool, aiming to overcome the defects of the prior art and solve the problems of relatively low efficiency and greater difficulty in grinding.

[0004] To this end, the utility model proposes a polygonal inner hole processing tool, comprising: a slotting tool, which is divided into three sections from bottom to top, namely a guide section, a processing section and a pressurizing section; the processing section matches the shape of the inner hole of the workpiece being processed; the pressurizing section cooperates with a hydraulic press pressure plate for mounting the slotting tool; and a part fixing tool, which is provided with a workpiece mounting hole for mounting the processed workpiece and a slotting tool through-hole for allowing the slotting tool to pass through; U-shaped mounting grooves are provided at the left and right ends of the part fixing tool, so that the part fixing tool is fixed to the hydraulic press workbench.

[0005] As a preferred technical solution of the present application, the gap between the guide section and the inner hole of the workpiece is less than 0.05 mm.

[0006] As a preferred technical solution of the present application, the processing section controls the single-side processing allowance to be less than 0.05 mm.

[0007] As a preferred technical solution of the present application, the clearance after the processed workpiece is inserted into the workpiece mounting hole is less than 0.05 mm.

[0008] As a preferred technical solution of the present application, the inserting knife through hole is located below the workpiece mounting hole and the two are connected in vertical communication.

[0009] As a preferred technical solution of the present application, the distance between the lower end surface and the upper end surface of the inserting blade through hole is greater than the total length of the inserting blade.

[0010] As a preferred technical solution of the present application, the part fixing fixture is positioned by cooperating with the U-shaped mounting groove through T-bolts.

[0011] The utility model provides a multi-sided internal hole processing tool, including a slotting cutter and a part fixing tool. The slotting cutter consists of three parts: a guide, a processing part, and a pressurizing part. The workpiece is fixed by the tool, and the slotting cutter guide part is inserted into the workpiece that has been roughly processed and formed. The workpiece is then pressurized and formed by a hydraulic press. This tool is simple and can be used in conjunction with wire cutting and a hydraulic press to quickly complete high-precision multi-sided internal hole processing. It is a simple, fast and effective mechanical processing solution.

[0012] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings that constitute part of this application are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0014] Figure 1 This is a structural diagram of a workpiece processed in a polygonal inner hole processing tool of the present invention;

[0015] Figure 2 This is a structural diagram of a plunger in a multi-sided inner hole processing tool of the present invention;

[0016] Figure 3 This is a schematic structural diagram of a part fixing fixture in a polygonal inner hole machining fixture of the present invention;

[0017] Figure 4 This is a schematic structural diagram of the multi-sided inner hole processing tooling of the present invention;

[0018] Description of Reference Numerals

[0019] 1. Part fixing fixture; 2. U-shaped mounting groove; 3. Workpiece mounting hole; 4. Insert through hole; 5. Processing workpiece; 6. Insert; 7. T-bolt; 8. Hydraulic press worktable; 9. Hydraulic press pressure plate; 51. Workpiece inner hole; 61. Guide section; 62. Processing section; 63. Pressurization section. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] like Figures 1 to 4 As shown, the polygonal inner hole processing tool of the present invention includes a part fixing tool 1 and a slotting tool 6, and also includes a hydraulic press workbench 8 for installing the part fixing tool 1 and a hydraulic press pressure plate 9 for installing the slotting tool 6.

[0022] like Figure 3 、 Figure 4 As shown, specifically, the part fixing fixture 1 includes an inverted U-shaped mounting block and a pair of U-shaped mounting grooves 2. The inverted U-shaped mounting block is mounted on the hydraulic press workbench 8 through a pair of U-shaped mounting grooves 2 and T-bolts 7.

[0023] A stepped through hole is provided at the upper end of the inverted U-shaped mounting block. The stepped through hole includes a workpiece mounting hole 3 for mounting a workpiece 5 and a tool insertion hole 4 for allowing a tool to pass through. The tool insertion hole 4 is located below the workpiece mounting hole 3 and the two are kept in communication.

[0024] The clearance between the workpiece 5 and the workpiece mounting hole 3 is less than 0.05 mm. The distance between the lower end face and the upper end face of the inserting tool through hole 4 is greater than the total length of the inserting tool 6.

[0025] like Figure 2 As shown, the insert cutter 6 is divided into three sections from bottom to top: a guide section 61, a processing section 62 and a pressurizing section 63; the processing section 62 matches the shape of the inner hole 51 of the workpiece 5 to be processed, and the pressurizing section 63 cooperates with the hydraulic press plate 9 used to install the insert cutter 6.

[0026] The guide section 61 is inserted into the workpiece inner hole 51 with a clearance of less than 0.05 mm. The machining section 62 controls the single-side machining allowance to be less than 0.05 mm. The guide section is parallel to the contact surface between the machining section and the workpiece, and perpendicular to the end face of the pressurizing section.

[0027] The utility model relates to a multi-sided inner hole processing tool, comprising a slotting cutter and a part fixing tool. The slotting cutter is composed of three parts: a guide, a processing part, and a pressurizing part. The workpiece is fixed by the tool, and the slotting cutter guide part is inserted into the workpiece formed by rough processing. The workpiece is then pressurized and formed by a hydraulic press. The tool is simple and can be used in conjunction with a wire cutting machine and a hydraulic press to quickly complete high-precision multi-sided inner hole processing.

[0028] The following briefly describes a processing tool for polygonal inner holes that can quickly complete polygonal inner hole processing. The specific solution is as follows:

[0029] 1) First, the polygonal inner hole roughing of the workpiece is completed by high-speed wire cutting, leaving a 0.05mm margin on one side;

[0030] 2) Fix the part fixture to the hydraulic press workbench. Before installation, check and adjust the flatness of the hydraulic press workbench. The contact surface between the part fixture and the part must be perpendicular to the axial direction. The single-side clearance between the part and the part fixture mounting hole is 0.05mm.

[0031] 3) Place the rough-machined workpiece into the workpiece mounting hole of the part fixing fixture; the inserting hole is to facilitate the insertion and removal of the tool after inserting.

[0032] 4) Insert the guide end of the insert cutter into the inner hole of the workpiece to be processed; quickly pressurize the insert cutter pressure section through the hydraulic press pressure plate, and the processing section completes the polygonal inner hole finishing of the part through relatively rapid movement.

[0033] The utility model utilizes a polygonal inner hole processing tool to solve the problem that polygonal inner holes are difficult to process, improves polygonal inner hole processing efficiency and precision, and the processing tool solves the problem of rapid processing of asymmetric polygonal inner holes.

[0034] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A tool for processing a polygonal inner hole, characterized in that: include: The inserting knife (6) is divided into three sections from bottom to top: a guide section (61), a processing section (62) and a pressurizing section (63); the processing section (62) matches the shape of the inner hole (51) of the workpiece (5) being processed, and the pressurizing section (63) cooperates with the hydraulic press plate (9) for installing the inserting knife (6); and The part fixing fixture (1) is provided with a workpiece mounting hole (3) for mounting the workpiece (5) to be processed, and a slotting hole (4) for allowing the slotting knife (6) to pass through; U-shaped mounting grooves (2) are provided at the left and right ends of the part fixing fixture (1), so that the part fixing fixture (1) is fixed to the hydraulic press workbench (8).

2. The multi-sided inner hole processing tool according to claim 1, characterized in that: After the guide section (61) is inserted into the inner hole (51) of the workpiece, the gap is less than 0.05 mm.

3. The multi-sided inner hole processing tool according to claim 1, characterized in that: The processing section (62) controls the single-side processing allowance to be less than 0.05 mm.

4. The multi-sided inner hole processing tool according to claim 1, characterized in that: After the workpiece (5) is inserted into the workpiece mounting hole (3), the clearance is less than 0.05 mm.

5. The multi-sided inner hole processing tool according to claim 1, characterized in that: The inserting knife through hole (4) is located below the workpiece mounting hole (3) and the two are connected vertically.

6. The multi-sided inner hole processing tool according to claim 5, characterized in that: The distance between the lower end surface and the upper end surface of the inserting blade through hole (4) is greater than the total length of the inserting blade (6).

7. The multi-sided inner hole processing tool according to claim 1, characterized in that: The part fixing fixture (1) is positioned by cooperating with the U-shaped mounting groove (2) through a T-shaped bolt (7).

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