Method for machining disc-shaped spiral cutting edge through gear hobbing machine

Abstract

The invention discloses a method for machining a disc-shaped spiral blade by a gear hobbing machine, which is specifically implemented according to the following steps of: 1, comparing the disc-shaped spiral blade to be machined with a standard bevel gear to obtain the modulus, the tooth number and the spiral angle of an analog bevel gear, and calculating to obtain a corresponding change gear so as to ensure the precision of the spiral angle; 2, after the to-be-machined disc-shaped spiral cutting edge is quenched and tempered, the to-be-machined disc-shaped spiral cutting edge is clamped and aligned, allowance machining is conducted on all the cutting edges through a lathe and a boring machine, the allowance of 1 mm is reserved on all the faces of the cutting edges, the remaining parts meet the drawing requirements, and then the cutting edges are quenched; and carrying out finish machining on the blade part by using a gear hobbing machine, assembling the disc-shaped spiral blade to be machined on the gear hobbing machine, and carrying out machining and drawing on the blade part by adopting a single tooth division machining method. The problem that the distribution position precision of the spiral cutter teeth and the spiral angle precision of the cutter teeth are difficult to guarantee is solved.

Description

Technical Field

[0001] The invention belongs to the technical field of mechanical equipment manufacturing and relates to a method for machining a disc-shaped spiral blade with a gear hobbing machine. Background Art

[0002] The disc-shaped spiral blade is a key part of the edge shredder. It is used for many shearing times, high frequency and long time. This blade is generally placed in the center of the workbench by a boring machine and processed with the workbench rotation. The upper and lower knives mesh with each other for shearing. It is necessary to ensure that the blade position is correct and the helix angle accuracy of the blade teeth is guaranteed. Otherwise, when meshing and shearing, the steel strip cannot be cut due to excessive blade gap, or the blade gap is too small or overlapped, damaging the blade. However, due to the large alignment and processing errors during boring machine processing, it is difficult to ensure the distribution position accuracy of the spiral blade teeth and the accuracy of the blade helix angle. Summary of the invention

[0003] The purpose of the present invention is to provide a method for machining a disc-shaped spiral blade by a gear hobbing machine, so as to solve the problem that the distribution position accuracy of the spiral teeth and the helix angle accuracy of the teeth are difficult to ensure.

[0004] The technical solution adopted by the present invention is a method for machining a disc-shaped spiral blade on a gear hobbing machine, which is specifically implemented according to the following steps: Step 1, compare the disc-shaped spiral blade to be processed with the standard helical gear, obtain the module, number of teeth and spiral angle of the analog helical gear, and calculate the corresponding gear; Step 2, after tempering the disc-shaped spiral blade to be processed, clamp and align the disc-shaped spiral blade to be processed, first use a lathe and a boring machine to perform allowance processing on each blade, with a allowance of 1mm on each surface of the blade, and the rest of the parts meet the requirements of the drawing, then quench the blade, and then use a gear hobbing machine to perform fine processing on the blade, assemble the disc-shaped spiral blade to be processed on the gear hobbing machine, and use the single-tooth processing method to process the blade according to the drawing.

[0005] The present invention is also characterized in that: Step 1 is as follows: Step 1.1, select the module according to the outer diameter of the disc-shaped spiral blade to be processed M n , select the gear hob corresponding to the module, and select the three-face milling cutter with an outer diameter close to that of the gear hob; Step 1.2, using a standard helical gear as an analogy, calculate the number of teeth, which is an integral multiple of the number of teeth on the disc-shaped spiral blade to be machined; Z = D / M n (1) In the formula, Z is the number of teeth, Dis the outer diameter of the disc-shaped spiral blade to be processed, M n To select the modulus.

[0006] Step 1.3, the outer circle of the disc-shaped spiral blade to be processed is close to the gear pitch circle of the helical gear, and the helical angle of the helical gear is consistent with the blade teeth, so the helical angle is obtained; Step 1.4: Select the differential gear according to the helix angle in step 1.3.

[0007] The specific process of step 1.4 is: the number of teeth of the differential gear is recorded as a , b , c , d , the hob is replaced by a three-sided milling cutter, and the differential gear ratio is calculated i value: i = (differential constant × sin β ) / ( M n × K )(2) Check through the universal ratio gear table i , ; i , =( a × c ) / ( b × d )(3) In the formula, β is the helix angle, number of hob heads K =1; i Take 7 significant digits and compare i , and i The difference is used to check whether the accuracy is qualified. When the fifth decimal place is 0, it meets the accuracy requirement.

[0008] A gear hobbing machine is used as a processing device, which includes a gear hobbing machine worktable and a gear hobbing machine guide rod. A clamping mandrel is vertically installed on the gear hobbing machine worktable, and a disc-shaped spiral blade to be processed is mounted on the clamping mandrel. An equal-height cushion block is arranged at the bottom of the disc-shaped spiral blade to be processed, and a nut is arranged at the top of the disc-shaped spiral blade to be processed, so as to compact and fix the disc-shaped spiral blade to be processed on the gear hobbing machine worktable; a three-sided milling cutter is selected to replace the hob, and the gear hobbing machine guide rod drives the three-sided milling cutter to perform blade finishing on the disc-shaped spiral blade to be processed.

[0009] The specific process of step 2 is: Step 2.1, use a lathe or boring machine to process the disc-shaped spiral blade to be processed, with a blade reserve of 1 mm, and the rest of the parts are processed, and the blade is quenched; Step 2.2, the disc-shaped spiral blade to be processed is finely processed by a gear hobbing machine, using the single-tooth method, and the three-face milling cutter selected in step 1.1 is installed, and the calculated value in step 1.4 is a , b , c , d Install the differential gear, the number of teeth of the gear wheel is the same as the analog helical gear, and one tooth is processed every 90°, that is, for every rotation of the gear handle, the hobbing machine table rotates 1 / 2 of a circle. Z , calculate the number of turns of each toothed handle Z n for: 90° / 360°= Z n / Z (4) Step 2.3, place equal height points under the disc-shaped spiral blade to be processed, insert the clamping mandrel through the inner hole, and press it with a nut. When processing the cutting edge, the milling cutter moves downward, and the hobbing machine table rotates at the same time. The combined movement forms a spiral groove of the blade corresponding to the spiral angle; Step 2.4, align 0.01mm according to the processed outer circle and top surface, disconnect the tooth movement, and process the first tooth spiral groove, leaving 0.2mm.

[0010] Step 2.5: After one tooth is processed, return the milling cutter to its original height, and then manually turn the tooth handle to rotate the entire Z n Stop after a circle, analogous to the number of gear teeth Z The number of teeth of the disc-shaped spiral blade is N. Z / 4 turns to process one tooth, then mill the second spiral groove of the cutter tooth, leaving 0.2mm, and repeatedly turn the tooth division handle until all four spiral grooves are processed, leaving 0.2mm.

[0011] Step 2.6, after returning to the position of the first spiral groove processing, repeat the tooth processing action. This time the spiral groove of the cutter teeth reaches the drawing, the processing is completed, and inspection is carried out.

[0012] The beneficial effect of the present invention is that the present invention relies on the characteristics of high equal division accuracy and high helix angle processing accuracy of the gear hobbing machine, and utilizes the characteristics of high alignment accuracy, high equal division accuracy and high helix accuracy of the gear hobbing machine, so as to fully meet the accuracy and use requirements of the spiral blade and significantly improve the processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the assembly structure of the gear hobbing machine for machining a disc-shaped spiral blade in Embodiment 2 of the present invention; Figure 2 It is a schematic diagram of the structure of the disc-shaped spiral blade processed in Example 2 of the present invention.

[0014] In the figure, 1. Disc-shaped spiral blade, 2. Gear hobbing machine worktable, 3. Gear hobbing machine guide rod, 4. Three-edge milling cutter, 5. Mounting mandrel, 6. Equal height spacer. DETAILED DESCRIPTION

[0015] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0016] Example 1 The method for machining a disc-shaped spiral blade by a gear hobbing machine of the present invention is specifically implemented according to the following steps: Step 1, compare the disc-shaped spiral blade 1 to be processed with the standard helical gear, select a suitable three-face milling cutter to replace the hobbing cutter, and obtain the module, number of teeth and spiral angle of the analog helical gear, and calculate the corresponding hanging gear.

[0017] Step 2, after tempering the disc-shaped spiral blade to be processed, clamp and align the disc-shaped spiral blade to be processed, first use a lathe and a boring machine to process each blade, with a 1mm allowance on each blade surface, and the rest of the parts meet the requirements of the drawing, and then quench the blade. Then use a gear hobbing machine to perform fine processing on the blade, clamp the disc-shaped spiral blade 1 to be processed on the gear hobbing machine, and use a single-tooth processing method to process the blade to meet the drawing.

[0018] Example 2 The method for machining a disc-shaped spiral blade by a gear hobbing machine of the present invention is specifically implemented according to the following steps: Step 1, perform analog calculation on the disc-shaped spiral blade 1 to be processed, compare the disc-shaped spiral blade 1 to be processed with the standard helical gear, obtain the module, number of teeth and spiral angle of the analog helical gear, and calculate the corresponding hanging gear.

[0019] Step 1 is as follows: Step 1.1, select the modulus according to the outer diameter of the disc-shaped spiral blade 1 to be processed M n , select the gear hob outer diameter corresponding to the module, and select a three-face milling cutter 4 that is close to the gear hob outer diameter; Step 1.2, using a standard helical gear as an analogy, calculate the number of teeth, the number of gear teeth being an integral multiple of the number of teeth on the disc-shaped spiral blade 1 to be machined; Z = D / M n (1) In the formula, Z is the number of teeth, D is the outer diameter of the disc-shaped spiral blade 1 to be processed, M n To select the modulus.

[0020] Step 1.3, the outer circle of the disc-shaped spiral blade 1 to be processed is close to the gear pitch circle of the helical gear, and the helical angle of the helical gear is consistent with the blade teeth, so as to obtain the helical angle; Step 1.4: Select the differential gear according to the helix angle in step 1.3.

[0021] The specific process of step 1.4 is as follows: the number of teeth of the differential gear is recorded as a , b , c , d , the hob is replaced by a three-sided milling cutter 4, and the differential gear ratio is calculated i value: i = (differential constant × sin β ) / ( M n × K )(2) Check through the universal ratio gear table i , ; i , =( a × c ) / ( b × d )(3) In the formula, β is the helix angle, number of hob heads K =1; i Use 7 significant digits to ensure accuracy.

[0022] Compare i , and i The difference is used to check whether the accuracy is qualified. When the fifth decimal place is 0, it meets the accuracy requirement.

[0023] Step 2, after tempering the disc-shaped spiral blade 1 to be processed, the disc-shaped spiral blade 1 to be processed is clamped and aligned, and each blade is first processed with a lathe and a boring machine, with a 1mm allowance on each surface of the blade, and the rest of the parts meet the requirements of the drawing, and then the blade is quenched, and then the blade is fine-processed with a hobbing machine, and the disc-shaped spiral blade 1 to be processed is assembled on the hobbing machine, and the blade is processed according to the drawing using a single-tooth processing method.

[0024] The specific process of step 2 is: Using gear hobbing machine as processing device, such as Figure 1As shown, the gear hobbing machine includes a gear hobbing machine worktable 2 and a gear hobbing machine guide rod 3. A clamping mandrel 5 is vertically installed on the gear hobbing machine worktable 2. A disc-shaped spiral blade 1 to be processed is sleeved on the clamping mandrel 5. An equal-height cushion block 6 is arranged at the bottom of the disc-shaped spiral blade 1 to be processed. A nut is arranged at the top of the disc-shaped spiral blade 1 to be processed, and the disc-shaped spiral blade 1 to be processed is compacted and fixed on the gear hobbing machine worktable 2. A three-face milling cutter 4 is selected to replace the gear hob, and the gear hobbing machine guide rod 3 drives the three-face milling cutter 4 to process the disc-shaped spiral blade 1 to be processed.

[0025] Step 2.1, the disc-shaped spiral blade 1 to be processed is processed by a lathe or a boring machine, with a 1mm blade allowance, and the rest of the parts are finished, and the blade is quenched.

[0026] Step 2.2, the disc-shaped spiral blade 1 to be processed is finely processed by a gear hobbing machine, using the single-tooth method, and the three-face milling cutter 4 selected in step 1.1 is installed, and the calculated value is calculated according to step 1.4 a , b , c , d Install the differential gear, the number of teeth of the gear wheel is the same as the analog helical gear, and one tooth is processed every 90°, that is, for every rotation of the gear handle, the gear hobbing machine table 2 rotates 1 / 2 of a circle. Z , calculate the number of turns of each toothed handle Z n for: 90° / 360°= Z n / Z (4) Step 2.3, place equal height points under the disc-shaped spiral blade 1 to be processed, insert the clamping core shaft 5 through the inner hole, and press it with a nut. When processing the cutting edge surface, the milling cutter moves downward, and the hobbing machine table 2 rotates at the same time, and the combined movement forms a spiral groove of the blade corresponding to the spiral angle; Step 2.4, align 0.01mm according to the processed outer circle and top surface, disconnect the tooth movement, and process the first tooth spiral groove, leaving 0.2mm.

[0027] Step 2.5: After one tooth is processed, return the milling cutter to its original height, and then manually turn the tooth handle to rotate the entire Z n Stop after a circle, analogous to the number of gear teeth Z The number of teeth of the disc-shaped spiral blade 1 is 4, and each Z / 4 turns to process one tooth, then mill the second spiral groove of the cutter tooth, leaving 0.2mm, and repeatedly turn the tooth division handle until all four spiral grooves are processed, leaving 0.2mm.

[0028] Step 2.6, after returning to the position of the first spiral groove processing, repeat the tooth processing action. This time the spiral groove of the cutter tooth reaches the diagram, and the processing is completed. Figure 2 As shown, test.

[0029] Example 3 The method for machining a disc-shaped spiral blade by a gear hobbing machine of the present invention is specifically implemented according to the following steps: Parameters of the disc-shaped spiral blade 1 to be processed: material 6CrW2Si, outer circle φ181, inner hole φ80H6, thickness 120, number of teeth 4, spiral groove depth 12, tooth width 30, helix angle 11°±1′, tooth distribution 90°±1′, blade quenching hardness HRC55-60, quenching depth>5mm.

[0030] Step 1, perform analog calculation on the disc-shaped spiral blade 1 to be processed, compare the disc-shaped spiral blade 1 to be processed with the standard helical gear, obtain the module, number of teeth and spiral angle of the analog helical gear, and calculate the corresponding hanging wheel to ensure the accuracy of the spiral angle.

[0031] Step 1.1, the outer diameter of the disc-shaped spiral blade 1 to be processed is φ 181mm, the diameter is small, so a small modulus gear is selected, and the modulus is selected as M n =9, select the gear hob corresponding to the module, and select the three-face milling cutter 4 with a diameter of φ180 that is close to the outer diameter of the gear hob; Step 1.2, using the analogy of a standard helical gear, calculate the number of teeth. Z = D / M n =181 / 9=20.111 (1) In the formula, Z is the number of teeth, D is the outer diameter of the disc-shaped spiral blade 1 to be processed, M n To select the module, the number of gear teeth is an integer multiple of the number of teeth of the disc-shaped spiral blade 1 to be processed, which is rounded up to a multiple of 4, so Z=20.

[0032] Step 1.3, the outer circle of the disc-shaped spiral blade 1 to be processed is close to the gear pitch circle of the helical gear, and the helical angle of the helical gear is consistent with the helical angle of the blade teeth, so the helical angle β=11°; Step 1.4: Select the differential gear according to the helix angle in step 1.3.

[0033] The specific process of step 1.4 is as follows: the number of teeth of the differential gear is recorded as a , b , c ,d , the hob is replaced by a three-sided milling cutter 4, and the differential gear ratio is calculated i value: i = (differential constant × sin β ) / ( M n × K )(2) i , =( a × c ) / ( b × d )(3) In the formula, the differential constant of OF-10 machine tool is 8.25059, β The helix angle is 11° and the module M n 9, number of hob heads K =1; i Use 7 significant digits to ensure accuracy.

[0034] i = (8.25059 × sin11°) / (9 × 1) = 0.17492075 Check through the universal ratio gear table; i , =( a × c ) / ( b × d） =(23x35) / (59x78)=0.17492394 Compare i , and i The difference is used to check whether the accuracy is qualified.

[0035] i 差 =0.17492075-0.17492394=0.00000319 The 5th decimal place is 0, which meets the accuracy requirement.

[0036] Step 2, after quenching and tempering the disc-shaped spiral blade 1 to be processed, the disc-shaped spiral blade 1 to be processed is clamped and aligned, and each blade is first processed with a lathe and a boring machine, with a 1mm allowance on each surface of the blade, and the rest of the parts meet the requirements of the drawing, and then the blade is quenched. The blade is then fine-processed with a gear hobbing machine, and the disc-shaped spiral blade to be processed is assembled on the gear hobbing machine, and the blade is processed in accordance with the drawing using a single-segment tooth processing method.

[0037] The specific process of step 2 is: A gear hobbing machine is used as a processing device, and a gear hobbing machine model 0F-10 is selected. The gear hobbing machine includes a gear hobbing machine worktable 2 and a gear hobbing machine guide rod 3. A clamping mandrel 5 is vertically installed on the gear hobbing machine worktable 2. A disc-shaped spiral blade 1 to be processed is sleeved on the clamping mandrel 5. An equal-height cushion block 6 is arranged at the bottom of the disc-shaped spiral blade 1 to be processed, and a nut is arranged at the top of the disc-shaped spiral blade 1 to be processed, so as to compact and fix the disc-shaped spiral blade 1 to be processed on the gear hobbing machine worktable 2; a three-face milling cutter 4 is selected to replace the hob, and the gear hobbing machine guide rod 3 drives the three-face milling cutter 4 to process the disc-shaped spiral blade 1 to be processed.

[0038] Step 2.1, the disc-shaped spiral blade 1 to be processed is processed by a lathe or a boring machine, with a 1mm blade allowance, and the rest of the parts are finished, and the blade is quenched.

[0039] Step 2.2, finish machining the disc-shaped spiral blade 1, using the single-tooth method, with the three-face milling cutter 4 selected in step 1.1, and the result calculated in step 1.4 ( a × c ) / ( b × d） =(23x35) / (59x78) Install the differential gear, the number of teeth of the split gear is consistent with the analog helical gear Z=20, and one tooth is processed every 90°, that is, for every rotation of the split gear handle, the hobbing machine table 2 rotates 1 / Z , calculate the number of turns of each toothed handle Z n for: 90° / 360°= Z n / 20 (4) Z n =5 Step 2.3, place a point of equal height under the disc-shaped spiral blade 1 to be processed, insert the clamping mandrel 5 through the inner hole, and press it with a nut. When processing the cutting edge, the milling cutter moves downward, and the hobbing machine table 2 rotates at the same time. The combined movement forms a spiral groove of the blade corresponding to the spiral angle. β =11°; Step 2.4, align the clamping mandrel 5 with the processed outer circle and top surface by 0.01mm, disconnect the tooth separation movement, and process the first tooth spiral groove, leaving 0.2mm.

[0040] Step 2.5, after one tooth is processed, the milling cutter returns to its original height, and then the tooth-dividing handle is manually turned, and it stops after turning 5 full circles. Analogously, the number of teeth on a gear is 20, and the number of teeth on the disc-shaped spiral blade 1 is 4. One tooth needs to be processed every 5 circles, and then the upper cutter mills the second 11° spiral groove at the cutting edge, leaving 0.2mm, and repeatedly turns the tooth-dividing handle until all four spiral grooves are processed, leaving 0.2mm.

[0041] Step 2.6, after returning to the position of the first spiral groove processing, repeat the tooth processing action, this time the cutting edge 11° spiral groove reaches the drawing and is inspected.

[0042] The method for machining a disc-shaped spiral blade on a gear hobbing machine of the present invention finds the common points between a standard helical gear and a spiral blade, uses a three-face milling cutter to replace a hob for machining on the gear hobbing machine, and fully utilizes the characteristics of the gear hobbing machine, such as high alignment accuracy, high equal division accuracy, and high spiral accuracy, to achieve the purpose of improving the workpiece accuracy and extending the service life.

Claims

1. A method for machining a disc-shaped spiral blade by a gear hobbing machine, characterized in that: Follow the steps below to implement it: Step 1, comparing the disc-shaped spiral blade (1) to be processed with a standard helical gear, obtaining the module, number of teeth and spiral angle of the analog helical gear, and calculating the corresponding gear; Step 2, after the disc-shaped spiral blade (1) to be processed is quenched and tempered, the disc-shaped spiral blade (1) to be processed is clamped and aligned, and each blade is first processed with a lathe or a boring machine, with a 1mm allowance on each blade surface, and the remaining parts meet the requirements of the drawing, and then the blade is quenched; and then the blade is finely processed with a gear hobbing machine, and the disc-shaped spiral blade (1) to be processed is assembled on the gear hobbing machine, and the blade is processed according to the drawing using a single-segment tooth processing method.

2. The method for machining a disc-shaped spiral blade by a gear hobbing machine according to claim 1, characterized in that: The step 1 is specifically as follows: Step 1.1, select the module according to the outer diameter of the disc-shaped spiral blade (1) to be processed M n , select the gear hob corresponding to the module, and select a three-face milling cutter (4) with an outer diameter close to that of the gear hob; Step 1.2, using a standard helical gear as an analogy, calculate the number of teeth, where the number of teeth on the gear is an integral multiple of the number of teeth on the disc-shaped spiral blade (1) to be machined; Z = D / M n （1） In the formula, Z is the number of teeth, D is the outer diameter of the disc-shaped spiral blade (1) to be processed, M n To select the modulus; Step 1.3, the outer circle of the disc-shaped spiral blade (1) to be processed is close to the gear pitch circle of the helical gear, and the helical angle of the helical gear is consistent with the blade teeth, so as to obtain the helical angle; Step 1.4: Select the differential gear according to the helix angle in step 1.

3.

3. The method for machining a disc-shaped spiral blade by a gear hobbing machine according to claim 2, characterized in that: The specific process of step 1.4 is as follows: the number of teeth of the differential gear is recorded as a , b , c , d , gear hob is replaced by three-edge milling cutter 4, calculate the differential gear ratio i value: i = (differential constant × sin β ) / ( M n × K )(2) Check through the universal ratio gear table i , ; i , =（ a × c ） / （ b × d ）（3） In the formula, β is the helix angle, number of hob heads K =1; i Take 7 significant digits and compare i , and i The difference is used to check whether the accuracy is qualified. When the fifth decimal place is 0, it meets the accuracy requirement.

4. The method for machining a disc-shaped spiral blade by a gear hobbing machine according to claim 3, characterized in that: A gear hobbing machine is used as a processing device. The gear hobbing machine comprises a gear hobbing machine worktable (2) and a gear hobbing machine guide rod (3). A clamping mandrel (5) is vertically mounted on the gear hobbing machine worktable (2). A disc-shaped spiral blade (1) to be processed is mounted on the clamping mandrel (5). A cushion block (6) of equal height is arranged at the bottom of the disc-shaped spiral blade (1) to be processed. A nut is arranged at the top of the disc-shaped spiral blade (1) to compact and fix the disc-shaped spiral blade (1) to be processed on the gear hobbing machine worktable (2). A three-sided milling cutter (4) is selected to replace the hobbing cutter. The gear hobbing machine guide rod (3) drives the three-sided milling cutter (4) to process the disc-shaped spiral blade (1) to be processed.

5. The method for machining a disc-shaped spiral blade by a gear hobbing machine according to claim 4, characterized in that: The specific process of step 2 is: Step 2.1, the disc-shaped spiral blade (1) to be processed is processed by a lathe or a boring machine, with a 1mm allowance on the blade, and the rest of the parts are processed, and the blade is quenched; Step 2.2, the disc-shaped spiral blade (1) to be processed is finely processed by a gear hobbing machine, using a single-tooth method, and the three-face milling cutter (4) selected in step 1.1 is installed, and the calculated value in step 1.4 is a , b , c , d Install the differential gear. The number of teeth on the gear is the same as that of the analog helical gear. One tooth is machined every 90°. That is, for every rotation of the gear handle, the hobbing machine table (2) rotates 1 / 2 of a circle. Z , calculate the number of turns of each toothed handle Z n for: 90° / 360°= Z n / Z （4） Step 2.3, place a pad of equal height under the disc-shaped spiral blade (1) to be processed, insert the clamping core shaft (5) through the inner hole, and press it with a nut. When processing the cutting edge surface, the milling cutter moves downward and the hobbing machine table (2) rotates at the same time. The combined movement forms a spiral groove of the blade corresponding to the spiral angle; Step 2.4, align 0.01mm according to the processed outer circle and top surface, disconnect the tooth separation movement, and process the first tooth spiral groove, leaving 0.2mm; Step 2.5, after one tooth is processed, the milling cutter returns to its original height, and then the tooth division handle is manually turned to rotate the entire Z n Stop after a circle, analogous to the number of gear teeth Z The number of teeth of the disc-shaped spiral blade (1) is 4. Z / 4 turns to process a tooth, then mill the second spiral groove of the cutter tooth, leaving 0.2mm, and repeatedly turn the tooth division handle until all the spiral grooves on the four sides are processed, leaving 0.2mm; Step 2.6, after returning to the position of the first spiral groove processing, repeat the tooth processing action. This time the spiral groove of the cutter teeth reaches the drawing, the processing is completed, and inspection is carried out.

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