Common lathe deep hole machining method
A processing method, the technology of ordinary lathes, applied in the field of deep hole processing of ordinary lathes, can solve problems such as low strength, reduced service life, and reduced processing accuracy, and achieve high economic benefits
Inactive Publication Date: 2017-01-25
SHAANXI ALLIANCE LOGISTICS
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AI Technical Summary
Problems solved by technology
In deep hole machining and turning, the inner hole tool bar is thin and long, with poor rigidity and low strength, which is prone to vibration and tool back phenomenon, and is also prone to taper error, which seriously affects the roughness and accuracy of the workpiece to be machined.
Due to the deep hole, the coolant is difficult to enter, and the chip removal is difficult. If the iron filings are not discharged smoothly, the iron filings will scratch the machined surface, seriously affect the surface roughness, and the tool will increase wear and reduce the service life.
Ripples and bell mouths often appear at the entrance and exit of deep holes, and the turning linearity is poor, which reduces the machining accuracy
Method used
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Experimental program
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Effect test
Embodiment Construction
[0014] Common lathe deep hole processing method of the present invention is characterized in that, comprises the following steps:
[0015] In the first step, the total length of both ends of the car is 1 mm, and the chamfers at both ends of the hole are 2×30°, and the outer circle of the rough car is clamped with two tops, leaving a margin of 0.5 mm on one side;
[0016] The second step is to clamp one end and hold the other end with the center frame. Use a commonly used inner hole cutter to roughly turn half the total length of the inner hole to 225mm, leaving a margin of 0.5mm on one side;
[0017] The third step is to turn around and leave the length of the hole at the other end of the rough car, leaving a margin of 0.5 mm on one side of the inner hole;
[0018] The fourth step is to finish the two ends of the car and control the total length of the workpiece, and the chamfering of the holes at both ends is 2×30°;
[0019] The fifth step is to use two thimbles to clamp the...
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The invention relates to the field of machining, in particular to a common lathe deep hole machining method. The common lathe deep hole machining method comprises the following steps that 1 mm is reserved for the total length of two turned-leveled end faces, chambering of is conducted at two ends of a hole 2 * 30 degrees, rough turning is conducted on an external circle by using two top clamps, and the unilateral allowance of 0.5 mm is reserved; one end is clamped, the other end is supported by using a central rack, rough turning is conducted on an inner hole by using a common inner hole cutter for one half 225 mm of the total length, and the unilateral allowance of 0.5 mm is reserved; rough turning is conducted on the residual hole of the other end, and the unilateral allowance of 0.5 mm is reserved for the inner hole; finish turning is conducted on two end faces, the total length of the workpiece is controlled, and chambering is conducted on the holes formed in the two ends for 2 * 30 degrees. The surface roughness and precision of the holes machined by adopting the method meet the drawing requirements, other technical indexes also meet the drawing requirements, deep holes having large length-diameter ratio can be smoothly machined only by using a common lathe and manufacturing several simple tools and clamps according to the technical requirements of drawings without clamps special for deep hole machining, and the method has higher economic benefit especially for small-batch products.
Description
technical field [0001] The invention relates to the field of mechanical processing, in particular to a deep hole processing method of a common lathe. Background technique [0002] It is difficult to process deep-hole parts with ordinary lathes, especially when the length-to-diameter ratio is greater than 10. To process single-piece or small-batch deep-hole workpieces, usually use extended standard twist drill bits to drill on ordinary lathes. However, when the drilled deep hole needs to be further refined to achieve high dimensional accuracy and small surface roughness, other technological measures must be taken to solve various technical problems in deep hole processing. In deep hole machining, the inner hole tool bar is thin and long, with poor rigidity and low strength, which is prone to vibration and tool back phenomenon, and is also prone to taper error, which seriously affects the roughness and precision of the workpiece to be machined. Due to the deep hole, the cool...
Claims
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IPC IPC(8): B23B1/00
CPCB23B1/00
Inventor 刘秋丽
Owner SHAANXI ALLIANCE LOGISTICS