Taper ball cutter

Abstract

The utility model discloses a taper ball cutter which comprises a conical cutter body with the diameter gradually decreasing from one end to the other end, a threaded rod is arranged in the middle of one end of the top of a conductor in an integrated forming mode, a threaded cylinder sleeve is provided with an inverted-cone-shaped cushion block and a pair of rubber rings, and a plurality of chip grooves are formed in the top of the cutter body. According to the taper ball cutter, taper deep hole machining can be carried out on a product, the chip discharging groove is formed, waste chips can be rapidly discharged while high-speed rotating drilling is carried out, the taper ball cutter is used for being in threaded connection with a clamping sleeve, and the reliability of connection between the taper ball cutter and the clamping sleeve is improved through the inverted-cone-shaped anti-skid cushion block.

Description

TECHNICAL FIELD

[0001] The utility model relates to the milling cutter related technical field especially, a taper ball cutter. BACKGROUND

[0002] In the milling cutter processing time will need to install the handle to the clamp cover, and then install on the machine tool, some clamp covers have certain taper in its inside to install the cutter. Some products need some taper hole type, but the existing cutter cannot deeply drill, so further improvement is needed. UTILITY MODEL CONTENTS

[0003] The utility model aims at providing a taper ball cutter to overcome the deficiencies in the prior art.

[0004] In order to realize the above-mentioned purpose, the utility model provides the following technical scheme:

[0005] A taper ball cutter, comprising a conical cutter body with a diameter gradually decreasing from one end to the other end, a threaded rod integrally formed in the middle of the top end of the cutter body, a pair of rubber rings and a pad with an inverted taper provided in the threaded cylinder, and a plurality of chip removal grooves provided on the top of the cutter body.

[0006] Further, the threaded rod is provided with external threads for threaded connection with the clamp cover.

[0007] Further, the pair of rubber rings comprises a large rubber ring and a small rubber ring, which are respectively arranged on the top and bottom of the pad. When the threaded rod is connected to the clamp cover, the large rubber ring is arranged between the cutter body and the pad, and the small rubber ring is arranged in the cavity of the clamp cover between the cutter body and the clamp cover, and provides a certain pre-tightening force between the cutter body and the clamp cover by the elasticity of the rubber ring, thereby improving the reliability during connection.

[0008] Further, the diameter of the large rubber ring is greater than that of the small rubber ring.

[0009] Further, the side wall of the cutter body is provided with a plurality of spiral arranged cutting edges.

[0010] Further, the bottom of the cutter body is provided with a hemispherical structure.

[0011] Further, the plurality of chip removal grooves are arranged in a ring array on the top side wall of the cutter body. In the cutting process, the waste chips can be effectively discharged from the chip removal grooves.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] The utility model discloses a product can be processed to conical deep hole, be provided with the chip flute, help to carry out the high -speed rotation drilling while discharging the swarf fast, the utility model discloses a threaded connection with the jacket, wherein, be provided with the anti -skid pad of inverted cone to improve the reliability of the taper ball cutter and jacket connection. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the three -dimensional structure schematic diagram of the utility model;

[0015] Fig. 2 It is the structure schematic diagram of the utility model neglects pad.

[0016] BRIEF DESCRIPTION OF DRAWINGS

[0017] 1, cutter body;2, threaded rod;3, cutting edge;4, chip flute;5, pad;6, big rubber ring;7, small rubber ring. DETAILED DESCRIPTION

[0018] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the specific embodiment of the utility model is described in detail below. In the following description, a lot of specific details are set forth in order to fully understand the utility model. However, the utility model can be implemented in many other ways different from the description, and those skilled in the art can make similar improvements without departing from the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0019] It should be noted that when an element is referred to as "fixed to" another element, it can be directly on the other element or there can be a middle element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or there can be a middle element. When the number of an element is referred to as "multiple", it can be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation.

[0020] 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 utility model belongs. The terms used in the specification of the utility model herein are only for the purpose of describing the specific embodiments and are not intended to limit the utility model. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] The utility model will be described in detail below in conjunction with the embodiments shown in the drawings:

[0022] As Figs. 1-2As shown, in this embodiment the structure of the tool body 1 is provided

[0023] I. Tool body 1 part

[0024] Overall shape and size determination

[0025] The overall size of the tool body 1 is determined according to the specific size requirements of the conical deep hole to be machined. For example, if a larger diameter conical deep hole is to be machined, the initial diameter of the tool body 1 at the larger diameter end (not the end of the hemispherical structure) will be increased accordingly. Assuming that the maximum diameter of the conical deep hole to be machined is D1, the diameter on the top side wall of the tool body 1 near the connection position with the threaded rod 2 can be designed to be slightly larger than D1 (taking into account factors such as cutting allowance of the cutting edge 3), such as D1 + 1 - 2mm.

[0026] For the taper of the conical part of the tool body 1, it is set according to the taper requirement of the conical deep hole to be machined. If a deep hole with a taper of 1:10 needs to be machined, the diameter change should be 10mm in the case of a tool body 1 axial length of 100mm.

[0027] Setting of the cutting edge 3

[0028] When the cutting edge 3 is arranged in a spiral on the side wall of the tool body 1, the spiral angle of the cutting edge 3 is determined according to factors such as the machining material and the required cutting force. For example, for machining of aluminum alloy materials with low hardness, the spiral angle can be set to 30 - 45 degrees, which can provide better cutting effect and reduce cutting force during cutting. The number of cutting edges 3 is determined according to the diameter of the tool body 1 and the machining efficiency requirement. For a tool body 1 with a larger diameter (such as greater than 50mm), the number of cutting edges 3 can be set to 4 - 6; for a tool body 1 with a smaller diameter (less than 30mm), the number of cutting edges 3 can be set to 2 - 3.

[0029] Hemispherical structure at the bottom

[0030] The radius of the hemispherical structure at the bottom of the tool body 1 is determined according to the machining process requirement. If the conical ball cutter is used in the finishing stage, the radius of the hemispherical structure will be more precise and have a higher degree of fit with the shape of the bottom of the machined hole. For example, when the diameter of the hole bottom is required to be d, the radius of the hemispherical structure can be designed according to the specific tolerance requirement as r=(d + tolerance) / 2.

[0031] Setting of the chip flute 4

[0032] A plurality of chip flutes 4 are arranged in an annular array on the top side wall of the tool body 1. The depth of the chip flutes 4 is determined according to the cutting depth and the chip evacuation amount. If the cutting depth is large, such as a maximum cutting depth of 5 mm, the depth of the chip flutes 4 can be designed to be 1-2 mm. The width of the chip flutes 4 can be determined according to the diameter of the tool body 1 and the width of the cutting edge 3. When the diameter of the tool body 1 is small (less than 30 mm), the width of the chip flutes 4 can be set to 1-1.5 mm; when the diameter of the tool body 1 is large (greater than 50 mm), the width of the chip flutes 4 can be set to 2-3 mm.

[0033] II. Threaded rod 2 part

[0034] External thread design

[0035] The external thread of the threaded rod 2 is designed according to the matching of the threaded connection with the sleeve. The pitch of the thread is determined according to the pitch of the internal thread of the sleeve, for example, if the pitch of the internal thread of the sleeve is 2 mm, then the pitch of the external thread of the threaded rod 2 is also 2 mm. The thread profile adopts standard triangular thread or trapezoidal thread to ensure the firmness and reliability of the connection. For application scenarios with high machining precision requirements, the thread can be finished, and the major diameter tolerance of the thread is controlled within ±0.05 mm.

[0036] III. Pad 5 and rubber ring part

[0037] Inverted conical pad 5

[0038] The size of the inverted conical pad 5 is determined according to the size of the tool body 1 and the sleeve. Both the top and bottom of the pad 5 are provided with annular grooves for mounting rubber rings. The diameter of the top annular groove is determined according to the outer diameter of the large rubber ring 6, and the diameter of the bottom annular groove is determined according to the outer diameter of the small rubber ring 7. For example, if the outer diameter of the large rubber ring 6 is 30 mm, the diameter of the top annular groove can be designed to be 30.2-30.5 mm to facilitate the installation of the large rubber ring 6; if the outer diameter of the small rubber ring 7 is 20 mm, the diameter of the bottom annular groove can be designed to be 20.2-20.5 mm.

[0039] The angle of the inverted cone of the pad 5 is determined according to the anti-loose requirement when the tool body 1 is connected with the sleeve. Generally, the angle of the inverted cone can be set between 1-3 degrees, which can ensure the anti-loose effect without excessively affecting the installation accuracy of the tool body 1.

[0040] Rubber ring installation

[0041] During the installation of the rubber ring, the small rubber ring 7 is first placed in the annular groove at the bottom of the pad 5, and then the pad 5 is placed in the cavity of the sleeve, with the small rubber ring 7 being positioned between the tool body 1 and the sleeve. Then the large rubber ring 6 is placed in the gap between the tool body 1 and the pad 5 corresponding to the top annular groove of the pad 5. During the installation process, attention should be paid to the correct direction of the rubber ring to ensure that it can normally play a pre-tightening role.

[0042] Any combination of the technical features in the above-described embodiments can be made, for the sake of brevity, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered that it is within the scope of the description, for those skilled in the art, without departing from the concept of the present application, can make a number of variations and improvements, which belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A tapered ball cutter characterized by: The cutter body is conical in shape with a gradually decreasing diameter from one end to the other, and a threaded rod is integrally formed in the middle of the top end of the cutter body.

2. A tapered ball cutter as claimed in claim 1, wherein: The threaded rod is provided with external threads for threaded connection with the clamp sleeve.

3. A tapered ball cutter as claimed in claim 1 wherein: The pair of rubber rings includes a large rubber ring and a small rubber ring, which are arranged on the top and bottom of the pad block respectively.

4. A tapered ball cutter as claimed in claim 1, wherein: The diameter of the large rubber ring is larger than that of the small rubber ring.

5. A tapered ball cutter as claimed in claim 1, wherein: The sidewall of the cutter body is provided with a plurality of spiral arranged cutting edges.

6. A tapered ball cutter as claimed in claim 1 wherein: The bottom of the cutter body is provided with a semispherical structure.

7. A tapered ball cutter as claimed in claim 1 wherein: The plurality of chip removal grooves are arranged in an annular array on the top sidewall of the cutter body.

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