Hard alloy cutter for high-precision hole machining

Abstract

The utility model relates to the technical field of alloy cutters, in particular to a hard alloy cutter for high-precision hole machining, which comprises a cutter handle, a honing section is mounted on the outer wall of the cutter handle, and a reaming and honing transition section is arranged on the outer wall of the cutter handle and above the honing section. A reaming and honing transition section is arranged on the outer wall of the cutter handle, a reamer section is connected to the position, above the reaming and honing transition section, of the outer wall of the cutter handle, a drilling and reaming transition section is arranged on the position, above the reamer section, of the outer wall of the cutter handle, and a drill bit section is arranged on the position, above the drilling and reaming transition section, of the outer wall of the cutter handle. The honing section, the drill bit section and the reamer section in the device are used for machining, and the problems that an existing hard alloy cutter cannot complete drilling, reaming and honing machining at a time, multiple sets of cutters need to be used in cooperation, production efficiency is low, cost and equipment investment are large, machining precision and stability are poor, and machining cost is high are solved. And high surface quality cannot be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to alloy cutter technical field, concretely is a kind of hard alloy cutter for high-precision hole processing. BACKGROUND

[0002] The precision requirement of aerospace equipment to parts is extremely high, because small error can lead to equipment performance decline or failure, the number of internal precision instruments of automobile is increasing, and the demand for micron-level form and position tolerance hole is also increasing, hydraulic components, as important elements in hydraulic transmission technology, need to bear high-pressure medium and transient impact, while ensuring the sealing and flexibility of micron-level precision matching pair, micron-level form and position tolerance hole has wide application prospect and important technical value in high-end manufacturing fields such as aerospace, automobile manufacturing and hydraulic components.

[0003] But the existing hard alloy cutter still has shortcomings, specifically: the existing hard alloy cutter cannot complete drilling, reaming and honing processing at one time, needs to use multiple cutters, production efficiency is low, cost and equipment investment are large, processing precision and stability are poor, and high surface quality cannot be achieved.

[0004] Therefore, a hard alloy cutter for high-precision hole processing is needed to solve the problems raised in the above background. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of hard alloy cutter for high-precision hole processing to solve the problems raised in the above background.

[0006] To achieve the above object, the utility model provides the following technical scheme:

[0007] A kind of hard alloy cutter for high-precision hole processing, including cutter handle, the outer wall of the cutter handle is equipped with honing section, the outer wall of the cutter handle and above honing section is provided with twist honing transition section, the outer wall of the cutter handle and above twist honing transition section is connected with reamer section, the outer wall of the cutter handle and above reamer section is provided with drill twist transition section, the outer wall of the cutter handle and above drill twist transition section is provided with drill bit section.

[0008] As the preferred scheme of the utility model, the blade diameter part of the drill bit section is designed according to hole diameter-0.1mm~-0.15mm, and the length of the drill bit section is the actual length of the hole plus 1.5 times the hole diameter.

[0009] As the preferred scheme of the utility model, the blade diameter part of the reamer section is designed according to hole diameter 0.0mm~-0.02mm, and the length of the reamer section is 1.5 times the hole diameter.

[0010] As the preferred scheme of the utility model, the blade diameter part of the honing section is designed according to the hole diameter plus or minus 0.005 mm, and the length of the honing section is 1.0-1.5 times the hole diameter.

[0011] As the preferred scheme of the utility model, the drill twisting transition section and the twist honing transition section are both designed according to 0.5 times the hole diameter.

[0012] As the preferred scheme of the utility model, the cutter handle is made of hard alloy, and the length of the cutter handle and the handle diameter of the cutter handle are both designed according to the DIN 6535 standard.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1、In the utility model, a hard alloy cutter for high-precision hole machining is designed, the honing section, the drill bit section and the reamer section in the device are used for machining, the outer wall of the cutter handle is composed of the drill bit section, the reamer section and the honing section, the hole, the reaming and the honing can be simultaneously performed, the micron-level form and position tolerance machining is completed once, the production efficiency is greatly improved, the cost and the equipment investment are significantly reduced, the unique precision control effectively guarantees the machining precision and stability, and the surface quality is extremely high, the hole coaxiality is effectively guaranteed by one-time machining, the machining efficiency is improved, the qualified rate is greatly improved, the problems that the existing hard alloy cutter cannot complete the drilling, reaming and honing machining once, needs to be used in cooperation with multiple cutters, the production efficiency is low, the cost and the equipment investment are large, the machining precision and stability are poor, and the high surface quality cannot be achieved are solved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a three-dimensional structure schematic view of the utility model;

[0016] Fig. 2 It is a front view of the utility model;

[0017] Fig. 3 It is a top view sectional view of the utility model.

[0018] In the drawing: 1, cutter handle; 2, honing section; 3, twist honing transition section; 4, reamer section; 5, drill twisting transition section; 6, drill bit section. DETAILED DESCRIPTION

[0019] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0020] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, wherein several embodiments of the present application are given, however, the present application can be realized in many different forms and is not limited to the embodiments described herein, on the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element, and when an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element, the terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs, the terminology used in the specification of the present application herein is only for the purpose of describing specific embodiments and is not intended to limit the present application, the term "and / or" used herein includes any and all combinations of one or more related listed items.

[0023] Embodiments, please refer to Figs. 1-3 The present application provides a technical scheme:

[0024] A hard alloy cutter for high-precision hole machining, comprising a cutter handle 1, a honing section 2 is installed on the outer wall of the cutter handle 1, a twist honing transition section 3 is arranged above the honing section 2 on the outer wall of the cutter handle 1, a reamer section 4 is connected above the twist honing transition section 3 on the outer wall of the cutter handle 1, a drill twist transition section 5 is arranged above the reamer section 4 on the outer wall of the cutter handle 1, and a drill bit section 6 is arranged above the drill twist transition section 5 on the outer wall of the cutter handle 1;

[0025] The blade diameter part of the drill bit section 6 is designed according to -0.1mm to -0.15mm of the hole diameter, the length of the drill bit section 6 is the actual length of the hole plus 1.5 times of the hole diameter, the blade diameter part of the reamer section 4 is designed according to 0.0mm to -0.02mm of the hole diameter, the length of the reamer section 4 is 1.5 times of the hole diameter, the blade diameter part of the honing section 2 is designed according to plus or minus 0.005mm of the hole diameter, the length of the honing section 2 is 1.0-1.5 times of the hole diameter, the drill-reamer transition section 5 and the reamer-honing transition section 3 are both designed according to 0.5 times of the hole diameter, the tool shank 1 is made of hard alloy, the length of the tool shank 1 and the shank diameter of the tool shank 1 are both designed according to the DIN 6535 standard, the three structures of the drill bit section 6, the reamer section 4 and the honing section 2 on the outer wall of the tool shank 1 can simultaneously perform hole drilling, reaming and honing, the design of the blade diameter part of the drill bit section 6 can leave a larger reaming part allowance for the reamer section 4, and the length of the drill bit section 6 can make the drill bit section 6 have sufficient chip removal space, and the design of the blade diameter part of the reamer section 4 can leave sufficient grinding part allowance for the honing section 2.

[0026] The working process of the utility model is as follows: when the hard alloy cutting tool for high-precision hole machining designed by the scheme is in operation, the three structures of the drill bit section 6, the reamer section 4 and the honing section 2 on the outer wall of the tool shank 1 can simultaneously perform hole drilling, reaming and honing, the blade diameter part of the drill bit section 6 is designed according to -0.1mm to -0.15mm of the hole diameter, can leave a larger reaming part allowance for the reamer section 4, the length of the drill bit section 6 is the actual length of the hole plus 1.5 times of the hole diameter, can make the drill bit section 6 have sufficient chip removal space, and the blade diameter part of the reamer section 4 is designed according to 0.0mm to -0.02mm of the hole diameter, can leave sufficient grinding part allowance for the honing section 2.

[0027] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A cemented carbide tool for high precision hole machining comprising a tool shank (1), characterized in that: The outer wall of the tool handle (1) is provided with a honing section (2), the outer wall of the tool handle (1) and above the honing section (2) is provided with a reaming transition section (3), the outer wall of the tool handle (1) and above the reaming transition section (3) is connected with a reamer section (4), the outer wall of the tool handle (1) and above the reamer section (4) is provided with a drilling and reaming transition section (5), and the outer wall of the tool handle (1) and above the drilling and reaming transition section (5) is provided with a drill bit section (6).

2. The cemented carbide tool for high-precision hole machining according to claim 1, characterized in that: The blade diameter part of the drill bit section (6) is designed according to hole diameter -0.1mm~ -0.15mm, and the length of the drill bit section (6) is the actual length of the hole plus 1.5 times the hole diameter.

3. The cemented carbide tool for high-precision hole machining according to claim 1, characterized in that: The blade diameter part of the reamer section (4) is designed according to hole diameter 0.0mm~ -0.02mm, and the length of the reamer section (4) is 1.5 times the hole diameter.

4. The cemented carbide tool for high-precision hole machining according to claim 1, characterized in that: The blade diameter part of the honing section (2) is designed according to hole diameter ±0.005mm, and the length of the honing section (2) is 1.0-1.5 times the hole diameter.

5. The cemented carbide tool for high-precision hole machining according to claim 1, characterized in that: The drilling and reaming transition section (5) and the reaming and honing transition section (3) are both designed according to 0.5 times the hole diameter.

6. The cemented carbide tool for high-precision hole machining according to claim 1, characterized in that: The tool handle (1) is made of hard alloy, and the length of the tool handle (1) and the handle diameter of the tool handle (1) are both designed according to DIN 6535 standard.

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