Manufacturing method of high-precision tooth-shaped structural part of hard disk testing equipment

Abstract

The invention relates to a manufacturing method of a high-precision tooth-shaped structural part of hard disk testing equipment. The manufacturing method comprises the following steps: blanking according to material specifications, milling a blank material to avoid a clamping position, and clamping and roughing by a CNC (Computerized Numerical Control) vice; a pressing plate is clamped on the tool and lies flat to remove the clamping position; clamping on a tool by using a pressing plate, and roughing a step surface, a 60-degree inclined surface and a tooth surface; the temperature of the oven is set to be 100 DEG C, baking is conducted for two hours, and laying is conducted; clamping with a tool, positioning with a D6.0 positioning hole, and roughing a step surface and a 176-degree V-shaped surface; roughing the length, the width, the 20-degree surface, the 60-degree surface, the tooth surface and the 176-degree V-shaped surface; a tool is clamped, a D4.0 positioning hole is positioned, and a step surface is roughed; roughing the length, the width, the 20-degree surface, the 60-degree surface, the tooth surface and the 176-degree V-shaped surface; a tool is clamped, a D4.0 positioning hole is used for positioning, and the step surface reaches the number; the width is 20-degree surfaces, 60-degree surfaces, tooth surfaces and 176-degree V-shaped surfaces; milling threads of side surface screw holes to reach the number; length is equal to number. Procedures are simple, and machining stability is high.

Description

TECHNICAL FIELD

[0001] The application relates to a manufacturing method of a high-precision tooth-shaped structural part of a hard disk testing device. BACKGROUND

[0002] The high-precision tooth-shaped structural part of the hard disk testing device has a shark tooth structure, as shown in Fig. 11, the workpiece material is plastic, the plasticity of the material is large, the workpiece is thin, the intersection surface of the workpiece is a sharp edge, the bottom of the V-shaped groove must be sharp, the V-shaped groove surface is not allowed to have a gap and a broken edge, and the surface roughness of the workpiece is required to be strict.

[0003] At present, the machining method is to use CNC to clamp the workpiece for milling, the machining deformation is serious, the workpiece surface has a tool mark and a scratch, and it is difficult to remove the machining burrs, thereby affecting the use performance of the part. SUMMARY

[0004] The application aims at overcoming the defects in the prior art and providing a manufacturing method of a high-precision tooth-shaped structural part of a hard disk testing device.

[0005] The application achieves the above-mentioned purpose by the following technical scheme.

[0006] The manufacturing method of the high-precision tooth-shaped structural part of the hard disk testing device has the following steps.

[0007] 1) a rectangular plate 202*28*8mm is prepared, the blank material is clamped by a vice on a CNC machine tool, the thickness of the front and back surfaces is increased to 7.6mm, the length is machined to 201mm, the width is machined to 26mm, and the deformation is controlled to be less than 0.05mm;

[0008] 2) the blank size 201*26*7.6mm is measured before machining on the CNC machine tool, the blank is divided into four parts, the top surface of the blank is lowered by 0.5mm to zero in the Z direction, the blank width is 26mm, and the milling clearance is 2.5-3.0mm; the front surface is clamped by the vice, the inclined angles of 20° and 29.25° are machined, the platform width of 3mm, the platform thickness of 1.5mm and the step height of 5.25mm are machined, the remaining amount is 0.3mm, the length of the aluminum vice is greater than 200mm, the vice clearance can be 3.0mm, the total length after machining is 198.52mm, and the total thickness is 6.6mm;

[0009] 3) the workpiece is placed on a tooling on the CNC machine tool, is positioned by three D6.0 holes on the tooling, is inserted into a pin, is close to the edge, is divided into two parts in the X direction and is positioned on one side in the Y direction, the Y direction needs to be paid attention to the offset of the previous process, the remaining amount is 0.3mm, the Z axis is lifted by 5.55mm from the top surface of the tooling to zero, the workpiece is clamped on the tooling by a pressing plate, the three-blade milling cutter is laid to remove the clearance, the remaining amount is 0.3mm, the total length after machining is 198.52mm, the total thickness is 6.6mm, and the width is 22.6mm;

[0010] 4) In the CNC machine tool, the workpiece is placed on the tooling, the X direction is divided, the Y direction is taken from the single side of the body processed in the previous process, and the 6.0 pin is positioned; Z is lifted 6.6mm above the bottom surface of the body in the previous process as zero, the workpiece is clamped on the tooling with a press plate, a three-blade milling cutter and a round nose cutter are used to process the step surface chamfer and 176° V surface, and the remaining amount is 0.3mm; the clamping method is changed, the clamping method is changed, φ1.5mm and φ1.0mm three-blade milling cutters are used for tooth roughing, tooth profile characteristics height 2.5 and 3.41 and width 5 are processed, and the remaining amount is 0.3mm; 90° right angle is processed;

[0011] 5) After roughing, the workpiece is placed vertically in the oven to relieve stress;

[0012] 6) In the CNC machine tool, the workpiece is placed on the tooling, the X direction is divided, the Y direction is taken from the single side of the body processed in the previous process, and the 6.0 pin is positioned, Z is lifted 6.6mm above the bottom surface of the body in the previous process as zero, the workpiece is placed in a natural state; the hot melt gun is preheated, the hot melt glue at the high temperature part of the front end of the gun is squeezed off before gluing; glue from both ends of the workpiece to the middle, after the glue is dry, the positioning pin is pulled out; a three-blade milling cutter is used to rough the step surface, and the remaining amount is 0.15mm; after processing, the workpiece is clamped on the tooling with a press plate, a three-blade milling cutter is used to rough the V surface, and the remaining amount is 0.15mm;

[0013] 7) In the five-axis machining center, the workpiece is placed on the suction cup tooling, positioned by the three D6.0 holes on the tooling, the pin is inserted, the workpiece is on the side, the X direction is divided, the Y direction is taken from the single side of the body processed in the previous process, the 6.0 pin is positioned, and Z is lifted 6.6mm above the bottom surface of the body in the previous process as zero; the suction cup is pumped, and a three-blade milling cutter and a ball cutter are used to rough the length, width, 20° surface, 60° surface, tooth surface and 176° V surface, and the remaining amount is 0.15mm;

[0014] 8) In the CNC machine tool, the workpiece is placed on the tooling, the X direction is divided, the Y direction is taken from the single side of the body processed in the previous process, and the 4.0 pin is positioned, Z is lifted 6.15mm above the bottom surface of the body in the previous process as zero; the workpiece is placed in a natural state; the hot melt gun is preheated, the hot melt glue at the high temperature part of the front end of the gun is squeezed off before gluing; glue from both ends of the workpiece to the middle, after the glue is dry, the positioning pin is pulled out; a three-blade milling cutter is used to rough the step surface, and the remaining amount is 0.08mm;

[0015] 9) In the five-axis machining center, the workpiece is placed on the suction cup tooling, positioned by the three D6.0 holes on the tooling, the pin is inserted, the workpiece is on the side, the X direction is divided, the Y direction is taken from the single side of the body processed in the previous process, the 6.0 pin is positioned, and Z is lifted 6.6mm above the bottom surface of the body in the previous process as zero; the suction cup is pumped, and a three-blade milling cutter is used to rough the length, width, 20° surface, 60° surface, tooth surface and 176° V surface, and the remaining amount is 0.08mm;

[0016] 10) On the CNC machine tool, place the workpiece on the fixture, center it in the X direction, take the measurement of one side of the body processed in the previous process in the Y direction, and use a 6.0 pin for positioning. Raise the bottom surface of the previous process body by 6.08 mm to zero in the Z direction. Place the workpiece in a natural state. Preheat the hot melt gun, and squeeze off the hot melt glue from the high temperature part of the gun tip before applying the glue. Apply the glue from both ends of the workpiece towards the middle. After the glue is applied, wait for it to dry before removing the positioning pin. Use a three-flute end mill and a round nose cutter to machine the stepped surface to the required size.

[0017] 11) On the CNC machine tool, before clamping the workpiece, the bottom surface is brushed and deburred; the workpiece is placed on the chuck fixture, positioned by the three D6.0 holes on the fixture, and the pins are inserted. The workpiece is placed near the edge, centered in the X direction, and the Y direction is measured by taking the dimensions of the previous machined body on one side, positioned by a 6.0 pin, and the Z direction is raised 6.025mm from the bottom surface of the previous body as zero; after clamping, the middle is measured with a 0.025 feeler gauge to ensure that the feeler gauge does not pass through; the chuck is evacuated, and the width, 20° surface, 60° surface, tooth surface and 176° V-shaped surface are machined to the required dimensions using a three-flute end mill, ball end mill and round nose end mill; the total length is machined to 197.99±0.01mm; the total thickness of 6.0 is machined to 6.025mm according to the upper difference.

[0018] 12) On the CNC machine tool, mount the workpiece on the fixture, center it in the X direction, unilaterally in the Y direction, and raise the bottom surface by 6.025mm to zero. Note that the Y direction should be offset by 0.08mm. Clamp the workpiece with a pressure plate, and install it in place on the side and bottom to prevent tilting. Use a three-flute thread milling cutter to mill the thread holes on the side to the required number of teeth. Turn it over and mill the thread holes on the opposite side in the same way.

[0019] 13) On the CNC machine tool, mount the workpiece on the fixture, divide the X into the center, take the Y side by one side, and set the Z top surface to zero. Place the workpiece in a natural state. Preheat the hot melt gun and squeeze out the hot melt glue from the high-temperature part of the gun tip before applying the glue. Apply the glue from both ends of the workpiece towards the middle. After applying the glue, wait for the glue to dry before pulling out the positioning pin. Machining the total length according to the upper difference to 197.93~197.94.

[0020] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 3), the three-flute end mill is a φ4mm tungsten steel end mill, and the machine tool is an XHAD765 machine tool.

[0021] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 4), the chamfering surface and 176° V-shaped surface roughing: the three-flute end mill is a φ4mm tungsten carbide end mill, and the round nose end mill is a φ4mmR0.5 tungsten carbide round nose end mill; the tooth surface roughing: the three-flute end mill is a φ1.5mm and a φ1.0mm tungsten carbide end mill; the machine tool is an XHAD765 machine tool.

[0022] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 6), the three-flute end mill is a φ3mm tungsten carbide end mill; the machine tool is an XHAD765 machine tool.

[0023] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 7), the three-flute end mill is a φ4mm tungsten carbide end mill, and the ball end mill is an R0.5 tungsten carbide ball end mill; the machine tool is an OKUMA-MU-4000V five-axis vertical machining center.

[0024] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 8), the three-flute end mill is a φ3mm tungsten carbide end mill; the machine tool is an XHAD765 machine tool.

[0025] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 9), the three-flute end mill is a φ4mm tungsten steel end mill; the machine tool is an OKUMA-MU-4000V five-axis vertical machining center.

[0026] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 10), the three-flute end mill is a φ3mm tungsten carbide end mill, and the round nose cutter is a φ2mmR0.2 tungsten carbide round nose cutter; the machine tool is an XHAD765 machine tool.

[0027] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 11), the three-flute end mill is a tungsten carbide end mill with diameters of φ1mm, φ3mm, φ0.3mm, and φ0.2mm, the ball end mill is R0.5mm and R0.15mm, and the round nose end mill is φ2mmR0.2; the machine tool is an XHAD765 machine tool.

[0028] Furthermore, in the manufacturing method of the high-precision tooth structure parts of the hard disk testing equipment mentioned above, in step 12), the three-flute end mill is a φ2.5mm tungsten carbide end mill, and the chamfering cutter is φ4-90 degrees; the three-flute thread end mill M4.0×P0.7 is a tungsten carbide thread end mill; the machine tool is an XHAD765 machine tool.

[0029] Compared with the prior art, the present invention has significant advantages and beneficial effects, specifically reflected in the following aspects:

[0030] This invention employs a scientific manufacturing process, utilizing tooling and fixtures multiple times to simplify and expedite processing, streamline the steps, enhance stability, and increase production efficiency. It controls the machining chamber temperature, uses an oven to relieve stress after roughing, and minimizes workpiece deformation. Increased rotational speed reduces chip generation, manages tool life, and ensures timely tool replacement, reducing deformation caused by excessive finishing allowances. Adhesive application uses a dotted method, minimizing waste while maintaining a firm bond. After applying hot melt adhesive, both sides are semi-finished to eliminate deformation. Particularly noteworthy is the V-groove machining, which utilizes five-axis rotation to ensure a sharp V-groove bottom, maintains surface roughness, eliminates burrs, and meets the performance requirements of the parts.

[0031] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing specific embodiments of the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 Step 2) is a schematic diagram of the manufacturing process.

[0034] Figure 2 Step 3) is a schematic diagram of the manufacturing process.

[0035] Figure 3a Step 4) shows the process of chamfering the step surface.

[0036] Figure 3b Step 4) is a schematic diagram of the roughing process for teeth.

[0037] Figure 3c Another schematic diagram of the roughing process for teeth in step 4);

[0038] Figure 4a Step 6) is a schematic diagram of the roughing process for the stepped surface.

[0039] Figure 4b : Schematic diagram of the 176° V-shaped surface roughing process in step 6);

[0040] Figure 5a Schematic diagrams of the manufacturing process in steps 7) and 9);

[0041] Figure 5bAnother schematic diagram of the manufacturing process in steps 7) and 9);

[0042] Figure 6a Step 8) is a schematic diagram of the manufacturing process.

[0043] Figure 6b Another schematic diagram of the manufacturing process in step 8);

[0044] Figure 7 A schematic diagram of the manufacturing process in step 10);

[0045] Figure 8a A schematic diagram of the manufacturing process in step 11);

[0046] Figure 8b Another schematic diagram of the manufacturing process in step 11);

[0047] Figure 9a : Schematic diagram of the threaded hole manufacturing process in step 12);

[0048] Figure 9b : A schematic diagram of the manufacturing process of the opposite threaded hole in step 12);

[0049] Figure 10 A schematic diagram of the manufacturing process in step 13);

[0050] Figure 11a A schematic diagram of a high-precision toothed structure component for hard disk testing equipment;

[0051] Figure 11b Another schematic diagram of a high-precision toothed structure component for hard disk testing equipment. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0053] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this invention, directional and ordinal terms are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0054] Specific manufacturing process steps for high-precision toothed structure parts of hard disk testing equipment (performed at a processing chamber temperature of 20.5°C):

[0055] 1) Prepare a rectangular sheet material of 202×28×8mm. On a CNC machine tool, clamp the blank material with a vise, reduce the thickness to 7.6mm on both sides, process the length to 201mm, process the width to 26mm, and control the deformation to within 0.05mm.

[0056] 2) On the XHAD765 CNC machine tool, the blank dimensions are measured as 201×26×7.6mm before machining; the blank is centered on four sides, and the top surface of the blank in the Z direction is lowered by 0.5mm to zero. The blank width is milled in the 26 direction to create a 2.5-3.0mm clearance in the clamping position to avoid deformation of the stepped surfaces at both ends during subsequent roughing; the blank is clamped in a vise for front roughing, machining 20° and 29.25° bevels, a 3mm platform width, a 1.5mm platform thickness, and a 5.25mm step height, with a 0.3mm allowance; the aluminum jaw length is greater than 200mm, and the vise clamping position can hold 3.0mm. After machining, the total length is 198.52mm, and the total thickness is 6.6mm. Figure 1 ;

[0057] 3) On the XHAD765 CNC machine tool, place the workpiece on the fixture. Use the four sides of the fixture to center the workpiece to obtain the 0-position datum. Offset each end of the X-axis by 90mm from the datum to point A. Offset the workpiece 102.26mm from the datum towards -X, and then 5mm towards -Y to obtain point C. Position the workpiece using the three D6.0 holes at points A and C, insert pins, place the workpiece near the edge, center it in the X direction, and position it on one side in the Y direction. Note that the Y-axis offset should have a 0.3mm allowance. Raise the Z-axis 5.55mm from the top surface of the fixture to zero. Clamp the workpiece on the fixture using a clamping plate. Use a three-flute end mill (φ4mm tungsten carbide) to remove the clamping position. After machining the marble platform, observe whether there is deformation in the width direction. If deformation is found, replace the tool immediately. The total length after machining is 198.52mm, the total thickness is 6.6mm, and the width is 22.6mm. Figure 2 ;

[0058] 4) On the XHAD765 CNC machine tool, place the workpiece on the fixture. Center it in the X direction. In the Y direction, deviate 0.3mm from one side of the previously machined body and use a 6.0mm pin for positioning. In the Z direction, lift the bottom surface of the previous body by 6.6mm and set it as zero. Clamp the workpiece on the fixture using a clamping plate. Use a three-flute end mill and a round nose cutter to machine the chamfer of the stepped surface and the 176° V-shaped surface. The three-flute end mill is a φ4mm tungsten carbide end mill, and the round nose cutter is a φ4mm R0.5 tungsten carbide round nose cutter, with a allowance of 0.3mm. Figure 3aChange the clamping method and use φ1.5mm and φ1.0mm three-flute end mills for roughing the teeth, machining tooth profile features with heights of 2.5 and 3.41 and a width of 5, with a allowance of 0.3mm; machine 90° right angles, such as... Figure 3b , 3c ;

[0059] 5) After roughing, place the workpiece vertically in the oven to relieve stress, ensuring that the large surface does not contact the tooling plate; set the oven temperature to 100°C for 2 hours, and allow it to cool naturally after completion.

[0060] 6) On the XHAD765 CNC machine tool, place the workpiece on the fixture, which needs to be wiped clean with alcohol. Remove burrs from the workpiece. Center in the X direction, and take the dimensions of the previous machined body on one side in the Y direction, using a 6.0mm pin for positioning. Raise the bottom surface of the previous body by 6.6mm to zero in the Z direction. Let the workpiece rest for 1-2 minutes in a natural state; do not press it down by hand. Preheat the hot melt gun, and squeeze out the hot melt adhesive from the high-temperature part of the gun tip before applying the adhesive. Apply the adhesive from both ends of the workpiece towards the middle. After applying the adhesive, wait for it to dry before removing the positioning pin (about 1-2 minutes). Roughen the stepped surface with a three-flute end mill (φ3mm tungsten carbide end mill), with a allowance of 0.15mm. Figure 4a After machining, clamp the workpiece onto the fixture using a clamping plate, and roughen the V-shaped surface using a φ3mm three-flute end mill, with a allowance of 0.15mm. Figure 4b All deformations are controlled within 0.05mm; after machining, clean the adhesive residue from the cutting tools.

[0061] 7) On the OKUMA-MU-4000V five-axis vertical machining center, place the workpiece on the chuck fixture, using the three D6.0 holes on the fixture for positioning. Insert pins, keeping the workpiece near the edge. Center the workpiece in the X direction. Take the dimensions of the previous machined body on one side in the Y direction, positioning it with 6.0 pins. Set the Z direction to zero by raising the bottom surface of the previous machined body by 6.6mm. Evacuate the chuck. Use a three-flute end mill and a ball end mill to roughen the length, width, 20° face, 60° face, tooth face, and 176° V-shaped face. The three-flute end mill is a φ4mm tungsten carbide end mill, and the ball end mill is an R0.5 tungsten carbide ball end mill, with a allowance of 0.15mm. Figure 5a , 5b All deformation amounts are controlled within 0.05mm;

[0062] 8) On the XHAD765 CNC machine tool, place the workpiece on the fixture, center it in the X direction, take the dimensions of the pre-machined body on one side in the Y direction, and position it with a 4.0mm pin. Raise the bottom surface of the pre-machined body by 6.15mm to zero in the Z direction. Let the workpiece rest for 1-2 minutes in a natural state; do not press it down by hand. Preheat the hot melt gun, and squeeze off the hot melt adhesive from the high-temperature part of the gun tip before applying the adhesive. Apply the adhesive from both ends of the workpiece towards the middle. After application, wait for the adhesive to dry before removing the positioning pin (approximately 1-2 minutes). Use a three-flute end mill to roughen the stepped surface, machining a dimension of 5.25mm and a total height of 6mm. The three-flute end mill is a φ3mm tungsten carbide end mill with a allowance of 0.08mm. Figure 6a , 6b All deformation should be controlled within 0.05mm; after machining, clean the adhesive residue from the cutting tools.

[0063] 9) On the OKUMA-MU-4000V five-axis vertical machining center, place the workpiece on the chuck fixture, using the three D6.0 holes on the fixture for positioning. Insert pins, place the workpiece near the edge, center it in the X direction, and take the dimensions of the previously machined body on one side in the Y direction, positioning it with 6.0 pins. Raise the Z-axis by 6.6mm from the bottom surface of the previous body, setting it to zero. Evacuate the chuck, and rough-cut the length, width, 20° face, 60° face, tooth surface, and 176° V-shaped face using a three-flute end mill. The three-flute end mill is a φ4mm tungsten carbide end mill, with a allowance of 0.08mm. Figure 5a , 5b All deformation amounts are controlled within 0.05mm;

[0064] 10) On the XHAD765 CNC machine tool, place the workpiece on the fixture, center it in the X direction, take the measurement from one side of the previously machined body in the Y direction, and position it with a 6.0mm pin. Raise the bottom surface of the previously machined body by 6.08mm to zero in the Z direction. Let the workpiece rest for 1-2 minutes in a natural state; do not press it down by hand. Preheat the hot melt gun, and squeeze off the hot melt adhesive from the high-temperature part of the gun tip before applying the adhesive. Apply the adhesive from both ends of the workpiece towards the middle. After application, wait for the adhesive to dry before removing the positioning pin (approximately 1-2 minutes). Machin the stepped surface to the required dimensions using a three-flute end mill and a round nose cutter. The three-flute end mill is a φ3mm tungsten carbide end mill, and the round nose cutter is a φ2mm R0.2 tungsten carbide round nose cutter. Figure 7 After processing is complete, clean the adhesive residue off the cutting tools.

[0065] 11) On the XHAD765 CNC machine tool, before clamping the workpiece, brush the bottom surface to remove burrs; place the workpiece on the chuck fixture, using the three D6.0 holes on the fixture for positioning, insert the pins, place the workpiece near the edge, center it in the X direction, take the measurement on one side of the previously machined body in the Y direction, and position it using a 6.0 pin; raise the bottom surface of the previously machined body by 6.025mm in the Z direction to zero; after clamping, measure the middle with a 0.025 feeler gauge to ensure that the feeler gauge does not pass through; evacuate the chuck, and use... Three-flute end mills, ball end mills, and nose end mills are used to machine 22°, 20°, 60°, toothed, and 176° V-faces to specified dimensions. Three-flute end mills are φ1mm, φ3mm, φ0.3mm, and φ0.2mm tungsten carbide end mills; ball end mills are R0.5mm and R0.15mm; and nose end mills are φ2mm with a radius of 0.2mm. The total length is machined to 197.99±0.01mm; the total thickness is 6.0mm, machined to 6.025mm using the upper tolerance. Figure 8a , 8b ;

[0066] Deburr the workpiece, making sure to scrape the toothed surface lightly, leaving no pits, and then remove the burrs.

[0067] 12) On the XHAD765 CNC machine tool, mount the workpiece on the fixture, centering it in the X direction, unilaterally on the Y direction, and raising the bottom surface by 6.025mm to zero. Note the Y-direction offset of 0.08mm (theoretical value). Clamp the workpiece with a pressure plate, ensuring the sides and bottom are properly positioned to prevent tilting. Use an M4.0×P0.7 three-flute thread cutter to mill the threads to the specified number in the side thread hole. Pay attention to the position and force of the pressure plate to prevent the go gauge from not reaching the bottom after measurement on the machine tool. Figure 9a ; Flip the machine over and mill the threaded hole on the opposite side using the same method, such as Figure 9b Pay attention to any chips or debris adhering to the tools and clean them promptly.

[0068] 13) On the XHAD765 CNC machine tool, mount the workpiece on the fixture, center the X direction, take the Y direction by one side, and set the Z direction to zero. Let the workpiece rest for 1-2 minutes in a natural state; do not press it down by hand. Preheat the hot melt gun, and squeeze off the hot melt adhesive from the high-temperature part of the gun tip before applying the adhesive. Apply the adhesive from both ends of the workpiece towards the middle. After applying the adhesive, wait for it to dry before removing the locating pin (1-2 minutes). Machining the total length according to the upper tolerance, to 197.93-197.94 mm, as shown. Figure 10 After processing is complete, clean the adhesive residue off the cutting tools.

[0069] Place the workpiece in a three-coordinate constant temperature space and let it stand for 2 hours before measuring.

[0070] Obtain high-precision toothed structure parts for hard disk testing equipment, such as... Figure 11a , 11b .

[0071] In summary, this invention employs a scientific manufacturing process, utilizing tooling and fixtures multiple times to simplify and expedite the machining operation, streamline the machining process, enhance machining stability, and increase production efficiency. It controls the machining chamber temperature, uses an oven to relieve stress after roughing, and reduces workpiece deformation. Increasing the rotational speed reduces chip generation, manages tool life, and ensures timely tool replacement, minimizing deformation caused by excessive finishing allowance. Applying adhesive using a dotted method minimizes the amount of material while maintaining a firm bond; after applying hot melt adhesive, both sides are semi-finished to eliminate deformation. In particular, the V-groove machining utilizes five-axis rotation angle machining to effectively ensure a sharp V-groove bottom, guaranteeing a smooth workpiece surface, eliminating burrs, and meeting the performance requirements of the parts.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0073] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A method for manufacturing high-precision toothed structural parts for hard disk testing equipment, characterized in that: Includes the following steps: 1) Prepare a rectangular sheet material of 202×28×8mm. On a CNC machine tool, clamp the blank material with a vise, reduce the thickness to 7.6mm on both sides, process the length to 201mm, process the width to 26mm, and control the deformation to within 0.05mm. 2) On the CNC machine tool, measure the blank size as 201×26×7.6mm before machining; center on four sides, reduce the top surface of the blank by 0.5mm in the Z direction to zero, and mill the blank width in the 26 direction to avoid the clamping position by 2.5~3.0mm; clamp the front side of the vise and roughen it, machine the bevel angles of 20° and 29.25°, machine the platform width of 3mm and the platform thickness of 1.5mm and the step height of 5.25mm, with a allowance of 0.3mm, the length of the aluminum jaw is greater than 200mm, the vise clamping position can clamp 3.0mm, the total length after machining is 198.52mm, and the total thickness is 6.6mm; 3) On the CNC machine tool, place the workpiece on the fixture, locate it with the three D6.0 holes on the fixture, insert the pins, place the workpiece on the side, center it in the X direction, and locate it on one side in the Y direction. Note that the offset of the Y direction should be 0.3mm. The Z axis should be raised 5.55mm from the top surface of the fixture to zero. Use the clamping plate to clamp the workpiece on the fixture, and use a three-flute end mill to remove the clamping position with a 0.3mm allowance. After machining, the total length is 198.52mm, the total thickness is 6.6mm, and the width is 22.6mm. 4) On the CNC machine tool, place the workpiece on the fixture, center it in the X direction, and take the Y direction measurement by offsetting 0.3mm on one side of the body processed in the previous process, and locate it with a 6.0mm pin; in the Z direction, lift the bottom surface of the previous process body by 6.6mm and set it as zero. Clamp the workpiece on the fixture with a clamping plate, and use a three-flute end mill and a round nose cutter to machine the chamfer of the stepped surface and the 176° V-shaped surface, with a allowance of 0.3mm; change the clamping method, and use φ1.5mm and φ1.0mm three-flute end mills to roughen the teeth, and machine the tooth profile features with heights of 2.5 and 3.41 and a width of 5, with a allowance of 0.3mm; machine the 90° right angle; 5) After roughing is completed, place the workpiece vertically in the oven to relieve stress; 6) On the CNC machine tool, place the workpiece on the fixture, center it in the X direction, take the dimensions of the previous machined body on one side in the Y direction, and position it with a 6.0mm pin. Raise the bottom surface of the previous machined body by 6.6mm to zero in the Z direction, and place the workpiece in its natural state. Preheat the hot melt gun, and squeeze off the hot melt adhesive from the high-temperature part of the gun tip before applying the adhesive. Apply the adhesive from both ends of the workpiece towards the middle. After the adhesive is applied, wait for it to dry before removing the positioning pin. Roughen the stepped surface with a three-flute end mill, leaving a margin of 0.15mm. After machining, clamp the workpiece on the fixture with a pressure plate, and roughen the V-shaped surface with a three-flute end mill, leaving a margin of 0.15mm. 7) On the five-axis machining center, place the workpiece on the chuck fixture, locate it with the three D6.0 holes on the fixture, insert the pins, place the workpiece near the edge, center it in the X direction, take the dimensions of the previous machined body in the Y direction, locate it with the 6.0 pins, and raise the bottom surface of the previous body by 6.6mm to zero in the Z direction; evacuate the air from the chuck, and roughen the length, width, 20° surface, 60° surface, tooth surface and 176° V-shaped surface with a three-flute end mill and ball end mill, with a allowance of 0.15mm; 8) On the CNC machine tool, place the workpiece on the fixture, center it in the X direction, take the dimensions of the previous machined body on one side in the Y direction, and position it with a 4.0mm pin. Raise the bottom surface of the previous machined body by 6.15mm to zero in the Z direction. Place the workpiece in its natural state. Preheat the hot melt gun, and squeeze off the hot melt glue from the high-temperature part of the gun tip before applying the glue. Apply the glue from both ends of the workpiece towards the middle. After applying the glue, wait for it to dry before removing the positioning pin. Use a three-flute end mill to roughen the stepped surface, machining the dimension 5.25mm and the total height 6mm, with a allowance of 0.08mm. 9) On the five-axis machining center, place the workpiece on the chuck fixture, locate it with the three D6.0 holes on the fixture, insert the pins, place the workpiece near the edge, center it in the X direction, take the dimensions of the previous machined body in the Y direction, locate it with the 6.0 pins, and raise the bottom surface of the previous body by 6.6mm to zero in the Z direction; evacuate the air from the chuck, and use a three-flute end mill to roughen the length, width, 20° surface, 60° surface, tooth surface and 176° V-shaped surface, with a allowance of 0.08mm; 10) On the CNC machine tool, place the workpiece on the fixture, center it in the X direction, take the measurement of one side of the body processed in the previous process in the Y direction, and use a 6.0 pin for positioning. Raise the bottom surface of the previous process body by 6.08 mm to zero in the Z direction. Place the workpiece in a natural state. Preheat the hot melt gun, and squeeze off the hot melt glue from the high temperature part of the gun tip before applying the glue. Apply the glue from both ends of the workpiece towards the middle. After the glue is applied, wait for it to dry before removing the positioning pin. Use a three-flute end mill and a round nose cutter to machine the stepped surface to the required size. 11) On the CNC machine tool, before clamping the workpiece, the bottom surface is brushed and deburred; the workpiece is placed on the chuck fixture, positioned by the three D6.0 holes on the fixture, and the pins are inserted. The workpiece is placed near the edge, centered in the X direction, and the Y direction is measured by taking the dimensions of the previous machined body on one side, positioned by a 6.0 pin, and the Z direction is raised 6.025mm from the bottom surface of the previous body as zero; after clamping, the middle is measured with a 0.025 feeler gauge to ensure that the feeler gauge does not pass through; the chuck is evacuated, and the width, 20° surface, 60° surface, tooth surface and 176° V-shaped surface are machined to the required dimensions using a three-flute end mill, ball end mill and round nose end mill; the total length is machined to 197.99±0.01mm; the total thickness of 6.0 is machined to 6.025mm according to the upper difference. 12) On the CNC machine tool, mount the workpiece on the fixture, center it in the X direction, unilaterally in the Y direction, and raise the bottom surface by 6.025mm to zero. Note that the Y direction should be offset by 0.08mm. Clamp the workpiece with a pressure plate, and install it in place on the side and bottom to prevent tilting. Use a three-flute thread milling cutter to mill the thread holes on the side to the required number of teeth. Turn it over and mill the thread holes on the opposite side in the same way. 13) On a CNC machine tool, mount the workpiece on the fixture, divide the X side into the center, take the Y side by one side, and set the Z side to zero. Place the workpiece in its natural state. Preheat the hot melt gun and squeeze out the hot melt adhesive from the high-temperature part of the gun tip before applying the adhesive; apply the adhesive from both ends of the workpiece towards the middle, and after the adhesive is applied, wait for it to dry before pulling out the positioning pin; process the total length according to the upper tolerance, and process it to 197.93~197.

94.

2. The manufacturing method of the high-precision toothed structure part of the hard disk testing equipment according to claim 1, characterized in that: Step 3), the three-flute end mill is a φ4mm tungsten carbide end mill, and the machine tool is an XHAD765 machine tool.

3. The manufacturing method of the high-precision toothed structure part of the hard disk testing equipment according to claim 1, characterized in that: Step 4), roughing of chamfered surfaces and 176° V-shaped surfaces: the three-flute end mill is a φ4mm tungsten carbide end mill, and the round nose end mill is a φ4mmR0.5 tungsten carbide round nose end mill; roughing of tooth surfaces: the three-flute end mills are φ1.5mm and φ1.0mm tungsten carbide end mills; the machine tool is an XHAD765 machine tool.

4. The manufacturing method of the high-precision toothed structure part of the hard disk testing equipment according to claim 1, characterized in that: Step 6), the three-flute end mill is a φ3mm tungsten carbide end mill; the machine tool is an XHAD765 machine tool.

5. The manufacturing method of the high-precision toothed structure part of the hard disk testing equipment according to claim 1, characterized in that: Step 7): The three-flute end mill is a φ4mm tungsten carbide end mill, and the ball end mill is an R0.5 tungsten carbide ball end mill; the machine tool is an OKUMA-MU-4000V five-axis vertical machining center.

6. The manufacturing method of the high-precision toothed structure part of the hard disk testing equipment according to claim 1, characterized in that: Step 8), the three-flute end mill is a φ3mm tungsten carbide end mill; the machine tool is an XHAD765 machine tool.

7. The manufacturing method of the high-precision toothed structure part of the hard disk testing equipment according to claim 1, characterized in that: Step 9), the three-flute end mill is a φ4mm tungsten carbide end mill; the machine tool is an OKUMA-MU-4000V five-axis vertical machining center.

8. The method for manufacturing high-precision toothed structure parts for hard disk testing equipment according to claim 1, characterized in that: Step 10): The three-flute end mill is a φ3mm tungsten carbide end mill, and the round nose cutter is a φ2mmR0.2 tungsten carbide round nose cutter; the machine tool is an XHAD765 machine tool.

9. The manufacturing method of the high-precision toothed structure part of the hard disk testing equipment according to claim 1, characterized in that: Step 11): The three-flute end mills are tungsten carbide end mills with diameters of φ1mm, φ3mm, φ0.3mm, and φ0.2mm; the ball end mills are R0.5mm and R0.15mm; and the round nose end mills are φ2mm and R0.2mm. The machine tool is an XHAD765 machine tool.

10. The method for manufacturing high-precision toothed structure parts for hard disk testing equipment according to claim 1, characterized in that: Step 12): The three-flute end mill is a φ2.5mm tungsten carbide end mill, and the chamfering cutter is φ4-90 degrees; the three-flute thread end mill M4.0×P0.7 is a tungsten carbide thread end mill; the machine tool is an XHAD765 machine tool.

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