A tool for machining annular end face groove and a machining method for annular end face groove

Abstract

A tool for machining annular end face grooves and a method for machining annular end face grooves belong to the field of mechanical machining. The present invention is to solve the problems of low machining quality, high machining cost and machining cycle when the existing end face groove turning tool is machining small diameter end face grooves. The present invention comprises a cutter head, a machining neck and a cutter body which are integrally made and arranged in sequence; the cutter head is a triangular prism-like shape, with a wide front and a narrow back; the left edge of the cutter head is a secondary cutting edge I, the right edge of the cutter head is a secondary cutting edge II, and the front edge of the cutter head is a main cutting edge; the front end face of the cutter head is a downwardly inclined slope surface, and its back angle is 10.3°; the top of the connection between the cutter head and the machining neck is an arc-shaped concave surface, which serves as a front cutting face chip breaker groove I. The present invention is mainly used for machining end face grooves.

Description

Technical Field

[0001] The invention belongs to the field of mechanical processing, and in particular relates to a tool for processing a circular ring end face groove and a processing method for a relatively deep and small-diameter circular ring end face groove. Background Art

[0002] The traditional processing method of the circular end face groove with an inner diameter of 5mm wide adopts the straight-in method of the lower arc end face turning tool, which has the following problems: 1. When processing the circular end face groove, the end face grooving tool vibrates greatly, the cutting is not smooth, and the tool often breaks, which damages the surface quality of the circular end face groove, causing quality accidents, and the tool is seriously damaged, which increases the processing cost. Sometimes, when processing a 30mm deep circular end face groove, more than ten turning tools need to be lost. 2. Due to the different inner diameters of various circular end face grooves, there are often no standard end face turning tools, and it is necessary to design and sharpen them by yourself. It is difficult to sharpen the end face groove turning tool, which requires high sharpening technology. At present, there are few people who can sharpen the end face groove turning tool, so no one is willing to process the circular end face groove. 3. The processing quality is difficult to control, the processing efficiency is low, and the processing period is affected. Therefore, this application designs a new type of circular end face groove turning tool for processing a small diameter circular end face groove with a width of 5mm and a depth of 32mm. Summary of the invention

[0003] The technical problem to be solved by the present invention is that when the existing end face groove turning tool processes the end face groove of a small diameter circular ring, there are problems of low processing quality, high processing cost and long processing cycle; the present application designs an end face groove turning tool with a new structure and designs two different sizes to process the end face groove of the circular ring. Such processing can ensure that the rigidity of the tool meets the cutting force required for processing, prevent the occurrence of tool hitting, ensure the processing quality of the end face groove of the circular ring, reduce processing costs and increase processing efficiency.

[0004] The technical solution adopted by the present invention to solve the above technical problems is:

[0005] A face groove cutter for machining a circular ring face groove comprises a cutter head, a machining neck and a cutter body which are integrally formed and arranged in sequence; the cutter head is wide at the front and narrow at the rear; the left edge of the cutter head is an auxiliary cutting edge I, the right edge of the cutter head is an auxiliary cutting edge II, and the front edge of the cutter head is a main cutting edge; the front end face of the cutter head is a downwardly inclined slope face, and its back angle is 10.3°; the top of the connection between the cutter head and the machining neck is an arc-shaped concave surface, which serves as a front face chip breaker groove I.

[0006] Furthermore, the processed neck is crescent-shaped, including a front arc surface and a rear arc surface arranged longitudinally.

[0007] Furthermore, the length between the cutter head and the processing neck is 35 mm, and the height of the processing neck is 20 mm; the height of the main cutting edge is 10 mm; the length of the cutter body is 120 mm, the width of the cutter body is 25 mm, and the height of the cutter body is 35 mm.

[0008] Furthermore, the width of the main cutting edge is 3.3 mm, forming a 3.3 mm wide end face groove cutter.

[0009] Furthermore, the auxiliary cutting edge II is an arc-shaped edge, and the length of the arc-shaped edge is 3 mm.

[0010] Furthermore, the width of the main cutting edge is 4.7 mm, forming a 4.7 mm wide end face groove cutter.

[0011] Furthermore, the auxiliary cutting edge II is a straight edge, and the angle between the auxiliary cutting edge I and the auxiliary cutting edge II is 7.15°.

[0012] A method for processing an end face groove, using a 3.3mm wide end face groove cutter and a 4.7mm wide end face groove cutter to perform alternating layered reciprocating processing, and the specific processing process is as follows:

[0013] Step 1, establish a coordinate system based on the center axis and the end surface of the workpiece to be processed, and set the radial direction of the workpiece to be processed as the X axis and the axial direction as the Z axis;

[0014] Step 2: Position the 3.3mm wide end face slotting cutter at 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 1.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction.

[0015] Step 3, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 0.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0016] Step 4, position the 3.3mm wide end face slotting cutter to 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 2.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0017] Step 5, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 1.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0018] Step 6, position the 3.3mm wide end face slotting cutter to 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 3.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0019] Step 7, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 2.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0020] Step 8, the workpiece is processed in such an alternating cycle. Each time the end face slot cutter with a width of 3.3 mm is cycled, the workpiece processing depth increases by 1 mm. Each time the end face slot cutter with a width of 4.7 mm is cycled, the workpiece processing depth increases by 1 mm. After a total of thirty-two cycles, the end face slot depth and slot width rough processing is completed.

[0021] Step 9, position the 4.7mm wide end face slotting cutter to 10.0mm in the X-axis direction and 0.2mm in the Z-axis direction, and use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 32.0mm deep from the end face of the processing. Then, the 4.7mm wide end face slotting cutter is positioned to 10.15mm in the X-axis direction and then retracted, and then retracted to 0.2mm in the Z-axis direction;

[0022] Step 10, position the 4.7mm wide end face groover to 10.3mm in the X-axis direction and 0.2mm in the Z-axis direction, and use the 4.7mm wide end face groover for processing. The groover rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is 32.0mm deep from the end face. Then, position the 4.7mm wide end face groover to 10.15mm in the X-axis direction and then retract it. After retracting to 100mm in the Z-axis direction, the machine tool program stops, thereby completing the end face groove processing.

[0023] Furthermore, the rotation speed of the 3.3 mm wide end face groove cutter and the 4.7 mm wide end face groove cutter is 60-80 r / min, and the feed rate is 0.03 mm per rotation.

[0024] Furthermore, air cooling and sulfurized oil lubrication cooling are used during the processing.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Since the inner diameter of the annular end face groove is small and the processing depth is deep, the present invention sets two end face groove cutters of different sizes, wherein the 3.3mm wide end face groove cutter is used for axial processing of the annular end face groove to avoid the tool being too rigid and causing the tool to break, and the 4.7mm wide end face groove cutter is used for radial processing of the annular end face groove to achieve the diameter expansion processing of the annular end face groove;

[0027] 2. The processing necks of the two end face groove cutters in the present invention are increased with front arc surfaces and rear arc surfaces, thereby doubling the rigidity of the cutters and solving the problem of insufficient rigidity of the cutters;

[0028] 3. The present invention adopts two different types of end face slot cutters for alternating cycle processing, with a small amount of cutting each time, less chips, and each time the cutter is withdrawn, the chips can be taken out, solving the problem of difficult chip removal due to narrow end face slots;

[0029] 4. The present invention adopts air cooling and sulfurized oil lubrication cooling methods to achieve lubrication and cooling effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are incorporated as part of this application and are used to provide a further understanding of the present invention.

[0031] Figure 1 This is the rear view of the end face slotting cutter;

[0032] Figure 2 The top view of the end face slot cutter with a width of 3.3 mm;

[0033] Figure 3 The top view of the 4.7mm wide end face slot cutter;

[0034] Figure 4 for Figure 1 Sectional view at AA in the middle;

[0035] Figure 5 This is a cross-sectional view of the machined workpiece.

[0036] In the figure: 1. Cutter head; 101. Auxiliary cutting edge I; 102. Auxiliary cutting edge II; 103. Main cutting edge; 104. Front cutting face chip breaker groove I; 2. Processing neck; 3. Cutter body; 4. Intermediate shaft; 5. Circular end face groove. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0039] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] This application is aimed at the processing of small diameter circular ring end face grooves with an inner diameter of 5mm, a groove width of 30mm, and a depth of 32mm, such as Figure 5 As shown, the workpiece includes an intermediate column 4 and an annular end face groove 5, wherein the diameter of the intermediate column 4 is 20 mm, the inner diameter of the annular end face groove 5 is 5 mm, and the depth is 32 mm; the annular end face groove needs to be processed alternately and layered reciprocatingly using a 3.3 mm wide end face groove cutter and a 4.7 mm wide end face groove cutter to ensure the processing quality of the annular end face groove, reduce processing costs and increase processing efficiency.

[0041] See also Figure 1 The embodiment of the present application provides a 3.3mm wide end face groove cutter for machining annular end face grooves, the 3.3mm wide end face groove cutter comprises a cutter head 1, a machining neck 2 and a cutter body 3 which are integrally made and arranged in sequence, the cutter head 1 is a triangular prism-like shape, and the cutter head 1 is wide at the front and narrow at the back; the left edge of the cutter head 1 is a secondary cutting edge I101, and the right edge of the cutter head 1 is a secondary cutting edge II102, the secondary cutting edge II102 is an arc-shaped edge, and the length of the arc-shaped edge is 3mm, that is, the length of the cutter head 1 is 3mm; the front end edge of the cutter head 1 is a main cutting edge 103, the width of the main cutting edge 103 is 3.3mm, the height of the main cutting edge 103 is 10mm, and the front end face of the cutter head 1 is a downwardly inclined slope face, the back angle angle is 10.3°, and the secondary deflection angles are 93.58° and 98.92° respectively.

[0042] The top of the connection between the cutter head 1 and the processing neck 2 is an arc-shaped concave surface, which serves as a front cutting face chip breaker groove Ⅰ104 to increase the sharpness of the tool and the chip breaking effect. The height of the main cutting edge 103 is at the center position of the tool body height.

[0043] The connection between the processing neck 2 and the cutter body 3 is an arc-shaped cutter corner, which increases the rigidity of the cutter body corner.

[0044] The processing neck 2 is crescent-shaped, including a front arc surface 201 and a rear arc surface 202. The arc-shaped neck of the tool can increase the cross-sectional area of ​​the processing neck 2 and improve the rigidity of the tool. The length of the tool head 1 and the processing neck 2 is 35 mm, the height of the processing neck 2 is 20 mm, and the width of the processing neck 2 is 4.5 mm.

[0045] The length of the blade body 3 is 120 mm, the width of the blade body 3 is 25 mm, and the height of the blade body 3 is 35 mm.

[0046] The embodiment of the present application also provides a 4.7mm wide end face groover for processing circular end face grooves. The difference between the 4.7mm wide end face groover and the 3.3mm wide end face groover is that the width of the main cutting edge of the 4.7mm wide end face groover is 4.7mm, and the secondary cutting edge on the right side of the 4.7mm wide end face groover is a straight edge edge, and the angle between the left secondary cutting edge and the right secondary cutting edge is 7.15°.

[0047] In this embodiment, the tool material is aluminum high-speed steel, which has good toughness, good shock resistance and excellent sharpness.

[0048] This embodiment breaks through the design mode of traditional end face grooving cutters, utilizes the space of the neck diameter of the front cutting edge of the tool to increase the cross-sectional area of ​​the neck diameter of the front cutting edge, and the innovative rear neck diameter is twice the cross-sectional area of ​​the traditional grooving cutter neck diameter, which increases the rigidity of the tool by 2 times, effectively solving the problem of insufficient rigidity of the tool.

[0049] A method for machining a circular ring end face groove, using double knives for alternating layered reciprocating machining, the specific machining process is as follows:

[0050] Step 1, establish a coordinate system based on the center axis and the end surface of the workpiece to be processed, and set the radial direction of the workpiece to be processed as the X axis and the axial direction as the Z axis;

[0051] Step 2, position the 3.3mm wide end face slotting cutter to 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, that is, reserve a machining allowance of 0.05mm on the inner wall of the annular end face slot 5; then use the 3.3mm wide end face slotting cutter for machining, the slotting cutter rotates around the center axis of the workpiece, the number of revolutions is 60-80r / min, and feeds along the Z-axis direction of the workpiece, the feed rate is 0.03mm per revolution, until the workpiece is machined to a position 1.0mm deep from the machined end face, and then retracts to 100mm in the Z-axis direction;

[0052] Step 3, position the 4.7mm wide end face groove cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, that is, reserve a machining allowance of 0.05mm for the outer inner wall of the circular end face groove 5; then use the 4.7mm wide end face groove cutter for processing, the groove cutter rotates around the center axis of the workpiece, and feeds along the Z-axis direction of the workpiece until it is processed to a position 0.95mm deep from the processed end face, and then retracts to 100mm in the Z-axis direction; the 4.7mm wide end face groove cutter is positioned at 10.25mm, and only the inner wall of the circular end face groove 5 on the outer side is processed, The inner wall on the inner side is not processed to prevent processing marks from being left on the inner wall when the two knives are used alternately. At the same time, since the width of the 4.7mm wide end face groove cutter is greater than that of the 3.3mm wide end face groove cutter, the 3.3mm wide end face groove cutter will not process the inner wall on the outer side and will not leave processing marks; and the 4.7mm wide end face groove cutter only processes to a depth of 0.95mm, and does not process to a depth of 1.0mm, which can prevent the 4.7mm wide end face groove cutter from performing axial processing due to processing errors and producing processing marks on the inner wall of the circular end face groove;

[0053] Step 4, position the 3.3mm wide end face slotting cutter to 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 2.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0054] Step 5, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 1.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0055] Step 6, position the 3.3mm wide end face slotting cutter to 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 3.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0056] Step 7, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 2.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction;

[0057] Step 8, the workpiece is processed in such an alternating cycle. Each time the end face slot cutter with a width of 3.3 mm is cycled, the workpiece processing depth increases by 1 mm. Each time the end face slot cutter with a width of 4.7 mm is cycled, the workpiece processing depth increases by 1 mm. After a total of thirty-two cycles, the end face slot depth and slot width rough processing is completed.

[0058] Step 9, position the 4.7mm wide end face slotting cutter to 10.0mm in the X-axis direction and 0.2mm in the Z-axis direction, and remove the 0.05mm machining allowance reserved on the inner wall; use the 4.7mm wide end face slotting cutter for machining, the slotting cutter rotates around the center axis of the workpiece, and feeds along the Z-axis direction of the workpiece until it is 32.0mm deep from the end face, and then position the 4.7mm wide end face slotting cutter to 10.15mm in the X-axis direction and then retract the cutter to prevent interference with the inner wall of the annular end face groove when retracting the cutter, and then retract the cutter to 0.2mm along the Z-axis direction;

[0059] Step 10, position the 4.7mm wide end face slotting cutter to 10.3mm in the X-axis direction and 0.2mm in the Z-axis direction, and remove the 0.05mm machining allowance reserved for the outer inner wall; use the 4.7mm wide end face slotting cutter for processing, the slotting cutter rotates around the center axis of the workpiece, and feeds along the Z-axis direction of the workpiece until it is 32.0mm deep from the end face, and then position the 4.7mm wide end face slotting cutter to 10.15mm in the X-axis direction and then retract it, and then retract it to 100mm in the Z-axis direction, and then the machine tool program stops, thereby completing the end face groove processing.

[0060] In this embodiment, since the width of the main cutting edge is proportional to the cutting force of the tool, the smaller the width of the main cutting edge, the smaller the cutting force, and vice versa, the larger the cutting force, the smaller the cutting force, the better the processing effect, and the smaller the rigidity requirement of the tool, the present application selects a smaller 3.3mm wide end face groove cutter to process the axial depth of the circular end face groove, just to avoid exceeding the existing rigid load of the tool and avoiding the phenomenon of tool breakage; a larger 4.7mm wide end face groove cutter is selected to process the radial width of the circular end face groove to achieve the diameter expansion processing of the circular end face groove; and the processing is carried out in the form of repeated alternation, and a processing allowance is left during the processing process, and a 4.7mm wide end face groove cutter is used for fine processing to remove the allowance. During the alternating use of the two tools, the axial position of the positioning is the same, and the radial position has a 0.2mm position change, to ensure that there is a processing gap on the side wall when the two tools are alternating, to ensure that the 4.7mm wide end face groove cutter is single-sided cutting processing, and the processing effect is better.

[0061] In this embodiment, 3.3mm wide and 4.7mm wide end face groove cutters are processed alternately, with low cutting force, solving the difficulty of machining vibration, making cutting smooth, with small cutting amount each time and less chips. The chips can be taken out each time the tool is retracted, solving the problem of difficult chip removal due to narrow end face grooves.

[0062] In this embodiment, air cooling and sulfide oil lubrication cooling methods are adopted. When feeding, a little oil is poured on the cutting point of the tool with an oil gun to achieve the effect of lubrication and cooling. During the processing, the chips in the end face groove are frequently cleaned with an air gun to prevent excessive chip blockage and affect the processing quality.

[0063] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A method for machining a circular ring end face groove, characterized in that: A 3.3 mm wide end face slotting cutter and a 4.7 mm wide end face slotting cutter are used for alternating layered reciprocating processing. The end face slotting cutter comprises a cutter head (1), a processing neck (2) and a cutter body (3) which are integrally formed and arranged in sequence. The cutter head (1) is in the shape of a triangular prism, with the cutter head (1) being wide at the front and narrow at the rear. The left edge of the cutter head (1) is an auxiliary cutting edge I (101), the right edge of the cutter head (1) is an auxiliary cutting edge II (102), and the front end edge of the cutter head (1) is a main cutting edge (103). The front end face of the cutter head (1) is a downwardly inclined slope face, and its back angle is 1 0.3°; the top of the connection between the cutter head (1) and the processing neck (2) is an arc-shaped concave surface, which serves as a front cutting face chip breaker groove I (104); the processing neck (2) is a crescent shape, including a front arc surface (201) and a rear arc surface (202) arranged longitudinally; the length of the cutter head (1) and the processing neck (2) is 35 mm, and the height of the processing neck (2) is 20 mm; the height of the main cutting edge (103) is 10 mm; the length of the cutter body (3) is 120 mm, the width of the cutter body (3) is 25 mm, and the height of the cutter body (3) is 35 mm; The main cutting edge (103) of the 3.3 mm wide end face slotting tool has a width of 3.3 mm, forming a 3.3 mm wide end face slotting tool; the secondary cutting edge II (102) of the 3.3 mm wide end face slotting tool is an arc-shaped edge, and the length of the arc-shaped edge is 3 mm; The width of the main cutting edge (103) of the 4.7 mm wide end face slotting tool is 4.7 mm, forming a 4.7 mm wide end face slotting tool; the secondary cutting edge II (102) of the 4.7 mm wide end face slotting tool is a straight edge, and the angle between the secondary cutting edge I (101) and the secondary cutting edge II (102) is 7.15°; The specific processing process is as follows: Step 1, establish a coordinate system based on the center axis and the end surface of the workpiece to be processed, and set the radial direction of the workpiece to be processed as the X axis and the axial direction as the Z axis; Step 2: Position the 3.3mm wide end face slotting cutter at 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 1.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction. Step 3, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 0.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction; Step 4, position the 3.3mm wide end face slotting cutter to 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 2.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction; Step 5, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 1.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction; Step 6, position the 3.3mm wide end face slotting cutter to 10.05mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 3.3mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 3.0mm deep from the end face, and then retracts to 100mm in the Z-axis direction; Step 7, position the 4.7mm wide end face slotting cutter to 10.25mm in the X-axis direction and 0.2mm in the Z-axis direction, and then use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 2.95mm deep from the end face, and then retracts to 100mm in the Z-axis direction; Step 8, the workpiece is processed in such an alternating cycle. Each time the end face slot cutter with a width of 3.3 mm is cycled, the workpiece processing depth increases by 1 mm. Each time the end face slot cutter with a width of 4.7 mm is cycled, the workpiece processing depth increases by 1 mm. After a total of thirty-two cycles, the end face slot depth and slot width rough processing is completed. Step 9, position the 4.7mm wide end face slotting cutter to 10.0mm in the X-axis direction and 0.2mm in the Z-axis direction, and use the 4.7mm wide end face slotting cutter for processing. The slotting cutter rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is processed to a position 32.0mm deep from the end face of the processing. Then, the 4.7mm wide end face slotting cutter is positioned to 10.15mm in the X-axis direction and then retracted, and then retracted to 0.2mm in the Z-axis direction; Step 10, position the 4.7mm wide end face groover to 10.3mm in the X-axis direction and 0.2mm in the Z-axis direction, and use the 4.7mm wide end face groover for processing. The groover rotates around the center axis of the workpiece and feeds along the Z-axis direction of the workpiece until it is 32.0mm deep from the end face. Then, position the 4.7mm wide end face groover to 10.15mm in the X-axis direction and then retract it. After retracting to 100mm in the Z-axis direction, the machine tool program stops, thereby completing the end face groove processing.

2. A method for machining an annular end face groove according to claim 1, characterized in that: The rotation speed of the 3.3 mm wide end face slotting cutter and the 4.7 mm wide end face slotting cutter is 60-80 r / min, and the feed rate is 0.03 mm per rotation.

3. A method for machining an annular end face groove according to claim 2, characterized in that: Air cooling and sulfurized oil lubrication cooling are used during the processing.

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