{"id":22945,"date":"2024-10-25T11:25:45","date_gmt":"2024-10-25T03:25:45","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=22945"},"modified":"2024-10-25T11:42:47","modified_gmt":"2024-10-25T03:42:47","slug":"turning-tools","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/ru\/turning-tools\/","title":{"rendered":"How do the Structure and Geometric Parameters of Turning Tools Affect Machining?"},"content":{"rendered":"
The geometric parameters of turning tools directly affect machining efficiency, surface quality, and tool life. 01 Names of various parts of a turning tool Names of various parts of a turning tool:<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

The Functions of the Different Parts of the Turning Tool<\/h1>\n

\u00a0Rake angle<\/h2>\n

The rake angle is the angle between the cutting face and the reference plane; it is an important indicator of how the cutting edge participates in the cutting process. The rake angle of the blade itself is usually a positive rake angle, and the shape of the cutting face can be a circular arc, chamfer, or flat surface. The size and sign (positive or negative) of the rake angle will affect the tool strength, cutting force, the tool’s finish machining capability, vibration tendencies, and chip formation. The rake angle has a significant impact on cutting force, chip evacuation, cutting heat, and tool life.<\/p>\n

 <\/p>\n

\"Relationship
Relationship between the rake angle\u00a0and chip evacuation<\/figcaption><\/figure>\n

\"\"<\/p>\n

Impact of rake angle\u00a0size on cutting<\/h3>\n

<\/b>1.A larger positive rake angleresults in a sharper cutting edge, but the strength of the cutting edge decreases.<\/p>\n

2. A larger positive rake angle\u00a0reduces the cutting force; an excessively large negative rake angle\u00a0increases the cutting force.<\/p>\n

\u00a0<\/b><\/strong><\/p>\n

Applications of different rake\u00a0angle sizes<\/h3>\n

\"\"<\/p>\n

<\/b>Relief angle<\/h2>\n

The relief angle has the function of avoiding the friction between the back tool face and the workpiece and making the tool tip cut into the workpiece freely.<\/p>\n

\"Back<\/p>\n

Relief angle size and back tool face wear diagram<\/p>\n

\"The
The relationship between tool relief angle size and wear<\/figcaption><\/figure>\n

\u00a0Influence of relief angle size on turning tools<\/a><\/h3>\n

The relief angle is large, and the rear tool surface is worn less, but the strength of the tool tip is decreased, and the reverse is true when the relief angle is small.<\/p>\n

 <\/p>\n

Application of different size relief angle<\/h3>\n

\"\"<\/p>\n

 <\/p>\n

Secondary rake angle<\/h2>\n

The secondary rake angle affects the mitigation of impact force, the size of the feed force component, the size of the back force component, and the chip thickness.<\/p>\n

\"Relationship
Relationship between the secondary rake angle and insert thickness<\/figcaption><\/figure>\n

Impact of the size of the secondary rake angle on cutting<\/h3>\n

\u2460 When the feed rate is the same, a larger secondary rake angle increases the length of contact between the insert and the chip, resulting in a thinner chip thickness. This disperses the cutting force over a longer cutting edge, thereby improving the tool life.<\/p>\n

\u2461 A larger secondary rake angle leads to an increase in the component force a’, which can cause bending when machining slender workpieces.<\/p>\n

\u2462 A larger secondary rake angle results in poorer chip handling performance.<\/p>\n

\u2463 A larger secondary rake angle leads to a thinner chip thickness and an increased chip width, making it difficult for the chip to break.<\/p>\n

 <\/p>\n

\"The
The impact of the size of the secondary rake angle on cutting force<\/figcaption><\/figure>\n

 <\/p>\n

Secondary clearance angle<\/h2>\n

The angle designed to avoid interference between the machined surface and the tool (secondary cutting edge). It is usually between 5\u00b0 and 15\u00b0.<\/p>\n

Impact of the secondary clearance angle<\/h3>\n

\u2460 A smaller secondary clearance angle increases the strength of the cutting edge, but the tool tip is prone to heating.<\/p>\n

\u2461 A smaller secondary clearance angle increases the back force, which can cause vibration during cutting.<\/p>\n

\u2462 For rough machining, a smaller secondary clearance angle is preferable; for finish machining, a larger secondary clearance angle is more suitable.<\/p>\n

\"\"<\/p>\n

 <\/p>\n

Inclination Angle<\/h2>\n

The inclination angle is the angle at which the cutting face is tilted. During heavy cutting, the tool tip at the starting point of the cut bears a significant impact force. To prevent the tool tip from being damaged by this force due to brittleness, an inclination angle for the cutting edge is necessary. In turning operations, it is generally set to 3\u00b0-5\u00b0;<\/p>\n

\u2460 When the inclination angle is negative, the chips flow towards the workpiece.<\/p>\n

When the inclination angle is positive, the chips are discharged in the opposite direction.<\/p>\n

\u2461 When the inclination angle is negative, the cutting edge strength increases, but the cutting back force also increases, which can easily cause vibration.<\/p>\n

\"During
During turning, the various angles of the cutting tool<\/figcaption><\/figure>\n

 <\/p>\n

Chamfering and blunting of the cutting<\/a> edge<\/h2>\n

Chamfering and blunting of the cutting edge are treatments applied to the cutting edge to ensure its strength. Typically, this involves rounding or chamfering the cutting edge. The chamfer is a narrow band-like surface set along the cutting face or the back face. Usually, the grinding width is half the feed rate.<\/p>\n

 <\/p>\n

\"Several
Several methods of cutting edge treatment<\/figcaption><\/figure>\n
\"Impact
Impact of cutting edge grinding width on tool life<\/figcaption><\/figure>\n

 <\/p>\n

Influence of cutting edge grinding width on turning tools<\/h3>\n

\u2460 High cutting edge strength, reduced chance of chipping, and improved tool life.<\/p>\n

\u2461 The wear on the flank face is likely to spread, resulting in a lower tool life. The width has no effect on the wear of the cutting face.<\/p>\n

\u2462 Increased cutting force, which can easily cause vibration.<\/p>\n

 <\/p>\n

Application of different tip widths<\/h3>\n

\"\"<\/p>\n

 <\/p>\n

Tip radius<\/h2>\n

The tip radius is a key factor in turning operations. It has a significant impact on the strength of the tip and the roughness of the machined surface. The specific choice depends on the cutting depth and feed, and it will affect surface quality, chip breaking, and blade strength.<\/p>\n

 <\/p>\n

\"Relationship
Relationship between tip radius and surface roughness<\/figcaption><\/figure>\n

 <\/p>\n

Influence of tip radius<\/h3>\n

Advantages of a larger tip radius:<\/p>\n

\u2460 Improved surface roughness.<\/p>\n

\u2461 Increased blade strength, less prone to chipping.<\/p>\n

\u2462 Reduced wear on the front and back of the tool.<\/p>\n

Disadvantages of an excessively large tip radius:<\/p>\n

\u2460 Increased cutting force, prone to vibration.<\/p>\n

\u2461 Poor chip handling performance.<\/p>\n

 <\/p>\n

Application of different tool tip corner radius sizes<\/h3>\n

\"turning<\/p>\n

In addition, when selecting turning tools and parameters, it is necessary to consider factors such as the nature of the material being machined, the required precision, and the production volume.<\/b><\/strong><\/div>\n

<\/p>","protected":false},"excerpt":{"rendered":"

The geometric parameters of turning tools directly affect machining efficiency, surface quality, and tool life. 01 Names of various parts of a turning tool Names of various parts of a turning tool: The Functions of the Different Parts of the Turning Tool \u00a0Rake angle The rake angle is the angle between the cutting face and…<\/p>","protected":false},"author":2,"featured_media":22947,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[92],"tags":[],"jetpack_featured_media_url":"https:\/\/www.meetyoucarbide.com\/wp-content\/uploads\/2024\/10\/\u56fe\u7247-2.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/posts\/22945"}],"collection":[{"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/comments?post=22945"}],"version-history":[{"count":4,"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/posts\/22945\/revisions"}],"predecessor-version":[{"id":22973,"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/posts\/22945\/revisions\/22973"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/media\/22947"}],"wp:attachment":[{"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/media?parent=22945"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/categories?post=22945"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.meetyoucarbide.com\/ru\/wp-json\/wp\/v2\/tags?post=22945"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}