16-time diameter deep hole processing straight fluted drill cutter
A straight groove drill and tool technology, applied in drilling tool accessories, manufacturing tools, metal processing equipment, etc., can solve the problem of easy breakage of tools, and achieve the effect of good surface quality, small diameter tolerance, and small movement
Inactive Publication Date: 2013-03-13
CHONGQING JIANSHE IND GRP
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Problems solved by technology
[0003] With the development of modern processing and manufacturing industry, the requirements for the depth of drilling holes are constantly increasing. Sometimes it is necessary to require the length-to-diameter ratio of the processing hole to be 16 times. The tool is easy to break, so how to design a tool with a new structure that can meet the processing requirements of 16 times the diameter of deep holes has become the research direction of those skilled in the art
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[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] In specific implementation, such as Figure 1 to Figure 7 As shown, a straight groove drilling tool for deep hole processing with 16 times the diameter is elongated as a whole, and the length-to-diameter ratio of the tool is greater than 16 times. A coolant channel is provided along the length direction; wherein, the cross-sectional shape of the drill pipe 2 is surrounded by two symmetrical inner concave line segments and two symmetrical outer convex arc line segments ( Figure 5 As shown), the diameter of the drill rod is about 0.1mm smaller than the diameter of the drill tip; the core diameter of the drill rod is about 28% of the outer peripheral diameter, and the outer surface of the drill rod has four positioning peripheral teeth arranged in the axial direction. The surface of the drill point 3 has four straight teeth arra...
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The invention discloses a 16-time diameter deep hole processing straight fluted drill cutter comprising a drive cutter handle, a drill rod and a drill tip connected in sequence. The diameter of a core part of the drill rod is about 28% of the peripheral diameter. The external surface of the drill rod is provided with four locating peripheral teeth arranged along the axial direction, the external surface of the drill tip is provided with four straight teeth arranged along the axial direction, and the axial back angle of a guide part of the drill tip is 0.048 mm / 100 mm; a water closing ring which is 0.5 mm wide is arranged on a connection part between the drill tip and the drill rod; and a cross-shaped type drill tip is arranged at the sharp end of the drill tip, the 16-time diameter deep hole processing straight fluted drill cutter is provided with two main cutting blades and a transverse blade, wherein two main cutting blades are 0.25 mm wide, the top angle of the bottom teeth of the drill tip is 135 degrees, and the back cutter surface of the main cutting blade is a 12-degree arc back cutter surface. The cutter has the advantages of good self-centering feature, high productivity and cutting efficiency, good precision of the cutter handle and high clamping precision. The16-time diameter deep hole processing straight fluted drill cutter is applicable to great cutting residual amount processing, and a main shaft of a machine tool is incapable of bouncing.
Description
technical field [0001] The invention relates to a straight groove drilling tool for deep hole processing, in particular to a straight groove drilling tool for 16 times diameter deep hole processing. Background technique [0002] Straight flute drills are mainly aluminum and aluminum alloys (high silicon content), efficient tools for deep hole machining of short chip castings. Generally, it can be used in the manufacturing fields of aviation, automobile engines and other components. For ordinary straight groove drills, the drill rod adopts a plane cross section, which extends to the front end of the shank; the flank shape of the drill tip adopts the drill tip form of 4 inclined planes. [0003] With the development of modern processing and manufacturing industry, the requirements for the depth of drilling holes are constantly increasing. Sometimes it is necessary to require the length-to-diameter ratio of the processing hole to be 16 times. The cutting tool is easy to break...
Claims
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IPC IPC(8): B23B51/00
Inventor 周述斌田文松
Owner CHONGQING JIANSHE IND GRP