CN204321222U - A kind of sintex with negative chamfer structure - Google Patents
A kind of sintex with negative chamfer structure Download PDFInfo
- Publication number
- CN204321222U CN204321222U CN201420815837.7U CN201420815837U CN204321222U CN 204321222 U CN204321222 U CN 204321222U CN 201420815837 U CN201420815837 U CN 201420815837U CN 204321222 U CN204321222 U CN 204321222U
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- ceramic
- negative chamfer
- negative
- sintex
- chamfer structure
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- 238000005520 cutting process Methods 0.000 claims abstract description 20
- 230000003746 surface roughness Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 abstract description 31
- 239000000463 material Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910000797 Ultra-high-strength steel Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
本实用新型公开了一种带负倒棱结构的陶瓷刀具，包括一陶瓷刀具本体；是在其陶瓷刀具的前角前刀面上沿主切削刃制有一负倒棱，该负倒棱的刃口形状为圆弧形刃口，该圆角的半径r大于等于0.2mm。其可以有效克服现有陶瓷刀具在连续切削高硬度材料时磨损快、易崩刃及使用寿命短的问题，结构简单，加工方便，提高了刀具使用寿命。
The utility model discloses a ceramic cutter with a negative chamfer structure, which comprises a ceramic cutter body; a negative chamfer is formed along the main cutting edge on the rake face of the ceramic cutter; The shape of the mouth is an arc-shaped cutting edge, and the radius r of the fillet is greater than or equal to 0.2mm. It can effectively overcome the problems of fast wear, easy edge chipping and short service life of existing ceramic tools when continuously cutting high-hardness materials. The utility model has simple structure, convenient processing, and improves tool life.
Description
技术领域technical field
本实用新型涉及一种刀具，尤其涉及一种带负倒棱结构的陶瓷刀具。The utility model relates to a cutter, in particular to a ceramic cutter with a negative chamfer structure.
背景技术Background technique
陶瓷刀具材料硬度高、耐磨性好、与金属的亲和力比较低，具有很好的抗黏结、扩散和氧化磨损的能力，是理想的金属切削加工材料。不过，陶瓷刀具材料本身性脆，抗弯强度低，韧性很低，耐冲击性能差，对加工条件的要求比较高，容易破碎。Ceramic tool materials have high hardness, good wear resistance, low affinity with metals, and good resistance to adhesion, diffusion and oxidative wear. They are ideal metal cutting materials. However, the ceramic tool material itself is brittle, with low bending strength, low toughness, poor impact resistance, relatively high requirements for processing conditions, and easy to break.
在国内，陶瓷刀具则只是近年来才真正开始在工业生产中推广应用，目前所占的比重仍然很低。之所以如此，除了陶瓷刀具本身性脆、冲击韧性和抗弯强度较低外，对于其几何参数的合理选择缺乏系统的研究和足够的重视，因而不能更好地扬长避短，也是一个重要的原因。In China, ceramic knives have only really begun to be popularized and applied in industrial production in recent years, and the current proportion is still very low. The reason for this is that in addition to the brittle nature of ceramic tools, low impact toughness and bending strength, there is a lack of systematic research and sufficient attention to the reasonable selection of their geometric parameters, so that they cannot better maximize their strengths and avoid weaknesses. This is also an important reason.
实用新型内容Utility model content
本实用新型的目的是提供一种带负倒棱结构的陶瓷刀具，该刀具耐用度好，寿命较长。The purpose of the utility model is to provide a ceramic cutter with a negative chamfer structure, which has good durability and long service life.
为实现上述目的，本实用新型采取以下设计方案：In order to achieve the above object, the utility model takes the following design scheme:
一种带负倒棱结构的陶瓷刀具，包括一陶瓷刀具本体；在其陶瓷刀具的前刀面主、副切削刃上磨制有负倒棱，该负倒棱的刃口半径r大于等于0.2mm。A ceramic tool with a negative chamfer structure, comprising a ceramic tool body; a negative chamfer is ground on the main and minor cutting edges of the rake face of the ceramic tool, and the edge radius r of the negative chamfer is greater than or equal to 0.2 mm.
所述带负倒棱结构的陶瓷刀具中，所述负倒棱的负前角γ为-35°～-25°。In the ceramic tool with a negative chamfer structure, the negative rake angle γ of the negative chamfer is -35° to -25°.
所述带负倒棱结构的陶瓷刀具中，所述的负倒棱是通过工具刃磨机研磨加工形成。In the ceramic tool with a negative chamfer structure, the negative chamfer is formed by grinding with a tool grinder.
所述带负倒棱结构的陶瓷刀具中，所述负倒棱表面粗糙度Ra小于或等于0.1μm。In the ceramic tool with a negative chamfer structure, the surface roughness Ra of the negative chamfer is less than or equal to 0.1 μm.
所述带负倒棱结构的陶瓷刀具中，所述的刃口半径r为0.2－0.6mm较佳。In the ceramic tool with negative chamfer structure, the cutting edge radius r is preferably 0.2-0.6mm.
本实用新型的优点是：结构简单，加工方便，提高了刀具使用寿命，降低了刀具使用成本，是对现有陶瓷刀具的一种革新和改进，经济和社会效益显著。The utility model has the advantages of simple structure, convenient processing, prolonging the service life of the cutter, reducing the use cost of the cutter, an innovation and improvement of the existing ceramic cutter, and remarkable economic and social benefits.
附图说明Description of drawings
图1为本实用新型带负倒棱结构的陶瓷刀具结构示意图。Fig. 1 is a structural schematic diagram of a ceramic cutter with a negative chamfer structure of the present invention.
图2为图1中的I部位放大图。Fig. 2 is an enlarged view of part I in Fig. 1 .
图中：1、陶瓷刀具，2、负倒棱(r：刃口半径，b：宽度，γ：负前角，Ra：粗糙度)。In the figure: 1. Ceramic tool, 2. Negative chamfer (r: cutting edge radius, b: width, γ: negative rake angle, Ra: roughness).
具体实施方式Detailed ways
参阅图1、图2所示，本实用新型带负倒棱结构的陶瓷刀具包括一陶瓷刀具本体，其主创点在于：在其陶瓷刀具1的前刀面主、副切削刃上磨制有一合理的负倒棱2及对于该负倒棱形状及结构的设计。Referring to Fig. 1 and shown in Fig. 2, the ceramic cutter with negative chamfer structure of the present invention includes a ceramic cutter body, and its main innovation point is: a reasonable The negative chamfer 2 and the design of the negative chamfer shape and structure.
由于陶瓷刀具材料本身性脆，容易破碎，故本实用新型沿陶瓷刀具1在正前角前刀面上沿主切削刃制负倒棱2时，优选采用研磨方式加工而成，磨出的刃口棱角应为圆弧形刃口，该刃口半径r应大于等于0.2mm(0.2－0.6mm较佳)，参见图2所示；且该负前角γ为-35°～-25°。Because the ceramic tool material itself is brittle and easy to break, when the utility model makes the negative chamfer 2 along the main cutting edge along the positive rake rake face of the ceramic tool 1, it is preferably processed by grinding. The edge of the mouth should be an arc-shaped cutting edge, and the radius r of the cutting edge should be greater than or equal to 0.2mm (0.2-0.6mm is better), as shown in Figure 2; and the negative rake angle γ is -35°～-25°.
优选的，所述负倒棱的宽度b可以是5～8倍的进给量(该陶瓷刀具在进给运动方向上相对于被加工工件的位移量)，故制作人员可以根据使用者固定加工或常需加工工件的进给量来预先设计出负倒棱的宽度b，以参照这个参数来进一步的制作负倒棱，制作时，还应尽力保证负倒棱棱边的表面粗糙度Ra要小于或等于0.1μm。Preferably, the width b of the negative chamfer can be 5 to 8 times the feed rate (the displacement of the ceramic tool relative to the workpiece to be processed in the direction of feed movement), so the production staff can fix the processing according to the user. Or it is often necessary to pre-design the width b of the negative chamfer by processing the feed rate of the workpiece, so as to further manufacture the negative chamfer with reference to this parameter. During production, try to ensure that the surface roughness Ra of the negative chamfer edge Less than or equal to 0.1 μm.
这样的设计可以更增强刀刃强度，加大了刀具的楔角，同时能扩大散热面积，能有效克服现有陶瓷刀具在连续切削高硬度材料时磨损快、易崩刃及使用寿命短的问题。这种负倒棱在强化刀刃的基础上使切削力增加不多，从而能提高刀具耐用度。This design can enhance the strength of the blade, increase the wedge angle of the cutter, and expand the heat dissipation area at the same time, which can effectively overcome the problems of rapid wear, easy chipping and short service life of the existing ceramic cutter when continuously cutting high-hardness materials. This kind of negative chamfer does not increase the cutting force much on the basis of strengthening the cutting edge, thus improving the durability of the cutting tool.
下面结合一具体实施例对本实用新型做进一步详细说明。Below in conjunction with a specific embodiment the utility model is described in further detail.
实例1，Al2O3基复合陶瓷刀具高速车削35CrMnSiAExample 1, High Speed Turning of 35CrMnSiA by Al 2 O 3 Matrix Composite Ceramic Tool
选择Al2O3+TiC复合陶瓷作为刀片材料，刀片规格为SNGA120404，在C6130卧式车床上加工35CrMnSiA超高强度钢。在此基础上，选择切削速度190m/min，进给量0.1mm/r，切削深度0.5mm的切削用量组合对工件表面进行加工。之后，使用金刚石砂轮在工具磨床上磨制陶瓷刀具，在前刀面磨制出宽度b为0.8mm，角度γ为-31.50的负倒棱，刃口半径r则需控制在0.2mm，用相同的切削用量组合对35CrMnSiA进行加工。两者相比较，发现带负倒棱的陶瓷刀具抗磨破损效果更好，刀具寿命是普通陶瓷刀具的5倍。Al 2 O 3 +TiC composite ceramics were selected as the blade material, and the blade specification was SNGA120404, and 35CrMnSiA ultra-high-strength steel was processed on a C6130 horizontal lathe. On this basis, choose the combination of cutting speed of 190m/min, feed rate of 0.1mm/r, and cutting depth of 0.5mm to process the surface of the workpiece. Afterwards, use a diamond grinding wheel to grind a ceramic tool on a tool grinder, and grind a negative chamfer with a width b of 0.8mm and an angle γ of -31.50 on the rake face, and the cutting edge radius r needs to be controlled at 0.2mm. Combination of cutting amount to process 35CrMnSiA. Comparing the two, it is found that the ceramic tool with negative chamfer has better anti-wear and damage effect, and the tool life is 5 times that of ordinary ceramic tools.
上述各实施例可在不脱离本实用新型的保护范围下加以若干变化，故以上的说明所包含及附图中所示的结构应视为例示性，而非用以限制本实用新型申请专利的保护范围。The above-mentioned embodiments can be changed without departing from the scope of protection of the present utility model, so the structures contained in the above description and shown in the accompanying drawings should be regarded as illustrative rather than limiting the scope of the utility model patent application. protected range.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420815837.7U CN204321222U (en) | 2014-12-19 | 2014-12-19 | A kind of sintex with negative chamfer structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420815837.7U CN204321222U (en) | 2014-12-19 | 2014-12-19 | A kind of sintex with negative chamfer structure |
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| Publication Number | Publication Date |
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| CN204321222U true CN204321222U (en) | 2015-05-13 |
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| CN201420815837.7U Expired - Fee Related CN204321222U (en) | 2014-12-19 | 2014-12-19 | A kind of sintex with negative chamfer structure |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106312113A (en) * | 2016-11-08 | 2017-01-11 | 哈尔滨理工大学 | Turning blade variable in chamfered edge width and angle |
| CN106346030A (en) * | 2016-11-08 | 2017-01-25 | 哈尔滨理工大学 | Double-circular-arc turning tool blade |
| CN107614165A (en) * | 2016-04-27 | 2018-01-19 | 住友电工硬质合金株式会社 | cutting tool |
| CN111185629A (en) * | 2020-01-13 | 2020-05-22 | 湖南泰嘉新材料科技股份有限公司 | Tooth of band saw blade and band saw blade |
| CN116460324A (en) * | 2023-05-25 | 2023-07-21 | 江苏双环齿轮有限公司 | Turning tool for intermittent machining of quenching material |
-
2014
- 2014-12-19 CN CN201420815837.7U patent/CN204321222U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107614165A (en) * | 2016-04-27 | 2018-01-19 | 住友电工硬质合金株式会社 | cutting tool |
| CN106312113A (en) * | 2016-11-08 | 2017-01-11 | 哈尔滨理工大学 | Turning blade variable in chamfered edge width and angle |
| CN106346030A (en) * | 2016-11-08 | 2017-01-25 | 哈尔滨理工大学 | Double-circular-arc turning tool blade |
| CN111185629A (en) * | 2020-01-13 | 2020-05-22 | 湖南泰嘉新材料科技股份有限公司 | Tooth of band saw blade and band saw blade |
| CN116460324A (en) * | 2023-05-25 | 2023-07-21 | 江苏双环齿轮有限公司 | Turning tool for intermittent machining of quenching material |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 Termination date: 20151219 |
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| EXPY | Termination of patent right or utility model |