Manufacturing methods for core components of ITC testing equipment

Abstract

This invention relates to a machining method for core components of ITC testing equipment. Using a rectangular sheet metal, the components are positioned on the bottom and left sides, clamped on the right side, and machined using a slow wire drawing machine. The method involves positioning on the bottom and left sides, clamping on the right side, CNC machining of an M1.6 threaded hole and a φ1H7 threaded hole, EDM machining of a φ2.03H7 precision hole, reversing 180° for clamping and positioning, CNC machining of the reverse M1.6 threaded hole and φ1H7 threaded hole, EDM machining of a φ2.03H7 precision hole, positioning on the bottom and left sides, clamping on the top surface, and machining 6-φ1H7 precision holes and the overall dimensions using a slow wire drawing machine. For single-piece machining, the components are clamped and positioned on the left and right sides for centering, and the outer shape is machined using a slow wire drawing machine. A grinding machine is used to clamp and position the machined outer shape using the slow wire drawing machined plane, and the slow wire drawing machined thread ends are removed. A machining center is used to clamp the outer shape using an R1.1 outer plane, positioned using the φ1H7 precision hole, and machined a φ2.5 outer shape, an R0.75 arc, and a 15° chamfer. A C0.45 chamfer is also machined.

Description

Technical Field

[0001] This invention relates to a method for processing a core component of an ITC testing device. Background Technology

[0002] ITC testing equipment core components, such as Figures 1a-1d It mainly consists of a main body, two grippers, two φ2.5mm thick 2.95mm cylindrical sections, and a φ1H7 through hole. The inner hole of the cylindrical section is an M1.6 threaded hole, and the opening has a countersunk head with a diameter of 2.03H7 and a depth of 0.3mm. After processing, it is nickel plated. Existing technology makes it difficult to control and ensure the relative position of the φ1H7 hole and the φ2.03H7 hole, which leads to the above-mentioned out-of-tolerance dimensional error, high defect rate, and low production efficiency and high processing cost due to the complexity of the process and long processing time. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a method for processing high-precision core components of ITC testing equipment.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] The processing method for the core components of ITC testing equipment is characterized by the following steps:

[0006] 1) Prepare a rectangular sheet of material. Using a slow wire cutting machine, employ a precision bench vise with six pieces for assembly, positioning the bottom and left sides while clamping the right side. Use 0.2mm diameter molybdenum wire. First, roughen the outline, leaving a 0.1mm allowance, at a speed of 0.9mm / min, voltage 21-24V, and current 0.7A. Then, roughly trim the outline, leaving a 0.05mm allowance, at a speed of 0.5mm / min, maintaining the voltage while adjusting the current to 0.5A. Finally, finely trim the outline to the required dimensions, at a speed of 0.3mm / min, maintaining the voltage and current at 0.3A. Dimensional tolerances;

[0007] 2) On a machining center, using the external shape for positioning and side clamping, a 4mm diameter, 90° center drill bit is used to drill a center hole with a chamfer of C0.15; a 1.5mm tungsten carbide drill bit is used to machine the M1.6 threaded pilot hole; an M1.6 forming tap is used to machine the M1.6 thread; a φ0.8 tungsten carbide drill bit is used to machine the φ1H7 thread through hole; rotate 180° to reverse the clamping position, maintaining the same positioning method, and machine the reverse side.

[0008] 3) Electrical discharge machining: Position the left and bottom sides, clamp the right side, and use a 2.03 copper rod electrode to machine the φ2.03H7 precision hole; rotate 180° to reverse the clamping, keep the positioning method unchanged, and machine the φ2.03H7 precision hole on the other side;

[0009] 4) Slow wire processing;

[0010] 4a. Using the external shape for positioning, perform six-piece assembly machining, clamping with a precision vise, and machine the φ1H7 precision hole. First, rough-cut to φ0.9mm at a speed of 0.9mm / minute, voltage 21-24V, and current 0.7A. Then, rough-finish to φ0.95mm at a speed of 0.5mm / minute, keeping the voltage constant but adjusting the current to 0.5A. Finally, finish-finish to a depth of several millimeters. Speed ​​0.3 mm / min, constant voltage, current 0.3 A; not disassembled, machined shape, 2±0.01, 3±0.01. Dimensions to count;

[0011] 4b. Single-piece processing: centering is done by external shape to ensure dimensions.

[0012] 5) Grinding: The outer plane of the previous slow wire machining process is clamped and positioned, and the wire ends of the slow wire machining are removed;

[0013] 6) On a machining center, clamp the R1.1 outer surface with a vise, position it with a φ1H7 precision hole, machine the φ2.5 outer surface and R0.75 arc with a 1.5mm diameter 4-flute tungsten carbide end mill, and machine the C0.15 chamfer with a 2mm diameter 90° chamfering cutter; rotate 180 degrees to reverse the clamping and machine the reverse side.

[0014] 7) Grinding: Clamp the R1.1 outer surface with a bench vise using a 45° angle block, use a diamond dressing wheel to clean the side, and use an 180# white corundum grinding wheel to machine the C0.45 chamfer.

[0015] Furthermore, the processing method for the core components of the aforementioned ITC testing equipment includes the following steps: Step 1) machining the outer shape, with a roughing allowance of 0.1 mm, a speed of 0.9 mm per minute, a voltage of 21–24 V, and a current of 0.7 A; then rough finishing the outer shape with a allowance of 0.05 mm, a speed of 0.5 mm per minute, the voltage remaining unchanged, and the current adjusted to 0.5 A; finally, fine finishing the outer shape. All dimensions are as specified, speed is 0.3 mm per minute, voltage remains constant, and current is 0.3 A.

[0016] Furthermore, in the processing method of the core components of the aforementioned ITC testing equipment, in step 2), the machining center is an OKUMA XHAD765 machine tool, using a D4mm x 90° chamfering cutter, D1.5mm and D0.8mm tungsten carbide drill bits and an M1.6 forming tap.

[0017] Furthermore, in the above-mentioned processing method for the core components of the ITC testing equipment, step 3) uses an AG40L mirror EDM machine from Sodick.

[0018] Furthermore, in the processing method of the core components of the aforementioned ITC testing equipment, step 4a involves machining a φ1H7 precision hole. First, roughing is performed to φ0.9mm at a speed of 0.9mm per minute, with a voltage of 21-24V and a current of 0.7A. Then, roughing is performed to φ0.95mm at a speed of 0.5mm per minute, with the voltage remaining constant and the current adjusted to 0.5A. Finally, precision machining is performed to a depth of [missing information]. The speed is 0.3 mm per minute, the voltage remains constant, and the current is 0.3 A.

[0019] Furthermore, in the above-mentioned processing method for the core components of the ITC testing equipment, step 4a, the slow wire machining uses a Sodick ALN 400G machine tool, employing φ0.20mm molybdenum wire, and is processed in combination of six pieces.

[0020] Furthermore, in the processing method of the core components of the aforementioned ITC testing equipment, step 5) involves using a BST250 water grinder and a 180# white corundum grinding wheel for grinding.

[0021] Furthermore, in the above-mentioned processing method for the core components of the ITC testing equipment, step 6) involves using an OKUMA XHAD765 machine tool as the machining center, employing a D4mm tungsten steel four-flute end mill and a D2mm x 90° chamfering cutter.

[0022] Compared with the prior art, the present invention has significant advantages and beneficial effects, specifically reflected in the following aspects:

[0023] ① This invention scientifically optimizes the process, employing multiple slow wire cutting and EDM, greatly reducing workpiece deformation caused by stress release during machining, ensuring precision hole positions of 2±0.01mm and 3±0.01mm, and maintaining the part's shape. And the dimensional accuracy pass rate, such as the concentricity of the Φ2.03H7 hole being 0.02;

[0024] ②Multiple slow wire cutting processes are used to reduce the stress generated by traditional tool processing, ensuring that the product does not deform and greatly guaranteeing dimensional accuracy;

[0025] ③ The six-piece combination processing method significantly improves processing efficiency, ensures good consistency in part dimensions, and is suitable for mass production;

[0026] ④ The entire process is simple and stable, and multiple precision bench vises are used for clamping, making the processing operation simple and fast, suitable for batch processing, and with a high pass rate. It solves the problems that are currently common, such as inconvenient clamping of irregular parts, difficulty in controlling dimensional accuracy, and low processing efficiency.

[0027] 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

[0028] 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.

[0029] Figure 1a Axonometric schematic diagram of the core components of the ITC testing equipment;

[0030] Figure 1b : Front view schematic diagram of the core components of the ITC test equipment;

[0031] Figure 1c Top view of the core components of the ITC testing equipment;

[0032] Figure 1d : Side view schematic diagram of the core components of the ITC test equipment;

[0033] Figure 2 A diagram illustrating the six-piece set;

[0034] Figure 3 A schematic diagram of the manufacturing process in step 1);

[0035] Figure 4 Step 2) is a schematic diagram of the manufacturing process.

[0036] Figure 5 Step 3) is a schematic diagram of the manufacturing process.

[0037] Figure 6a : A schematic diagram of the manufacturing process in step 4a;

[0038] Figure 6b : A schematic diagram of the manufacturing process in step 4b;

[0039] Figure 7 Step 6) is a schematic diagram of the manufacturing process.

[0040] Figure 8 : A schematic diagram of the manufacturing process in step 7). Detailed Implementation

[0041] 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.

[0042] 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.

[0043] like Figures 2-8 As shown, the specific processing technology of the core components of the ITC testing equipment is as follows:

[0044] 1) Prepare a rectangular sheet of material. Use a slow wire cutting machine, assembling six pieces. Position the bottom and left sides using a precision vise, clamping the right side. Use 0.2mm diameter molybdenum wire. First, roughen the outline, leaving a 0.1mm allowance, at a speed of 0.9mm / min, voltage 21-24V, and current 0.7A. Then, roughly trim the outline, leaving a 0.05mm allowance, at a speed of 0.5mm / min, keeping the voltage constant and adjusting the current to 0.5A. Finally, finely trim the outline to the required dimensions, at a speed of 0.3mm / min, keeping the voltage constant and the current 0.3A. Dimensional tolerances, such as Figure 3 As shown;

[0045] 2) The OKUMA XHAD765 machine tool, using a D4mm x 90° chamfering cutter, D1.5mm and D0.8mm tungsten carbide drill bits, and an M1.6 forming tap, is positioned by its shape and clamped from the side. A 4mm diameter, 90° center drill point is used to drill a center hole, with a chamfer of C0.15. A 1.5mm tungsten carbide drill bit is used to machine the M1.6 threaded hole. An M1.6 forming tap is used to machine the M1.6 thread. A φ0.8mm tungsten carbide drill bit is used to machine the φ1H7 thread through hole. The machine is rotated 180° to reverse the clamping position, maintaining the same positioning method, and the above features are machined on the reverse side. Figure 4 As shown;

[0046] 3) Electrical discharge machining (EDM): A Sodick AG40L mirror EDM machine was used. The left and bottom sides were positioned, and the right side was clamped. A 2.03mm copper rod electrode was used to machine a φ2.03H7 precision hole. The hole was then rotated 180° to the reverse side, maintaining the same positioning, to machine the other side of the φ2.03H7 precision hole. Figure 5 As shown;

[0047] 4) Slow wire machining: The slow wire machining machine used is the Sodick ALN 400G machine tool, using φ0.20mm molybdenum wire. The shape of the part shown in the left and top views is processed in a six-piece combination.

[0048] 4a. Using the external shape for positioning, perform six-piece assembly machining, clamping with a precision vise, and machine the φ1H7 precision hole. First, rough-cut to φ0.9mm at a speed of 0.9mm / minute, voltage 21-24V, and current 0.7A. Then, rough-finish to φ0.95mm at a speed of 0.5mm / minute, keeping the voltage constant but adjusting the current to 0.5A. Finally, finish-finish to a depth of several millimeters. Speed ​​0.3 mm / min, constant voltage, current 0.3 A; not disassembled, machined shape, 2±0.01, 3±0.01. Dimensions to number; the six-piece assembly is divided into six individual parts, such as... Figure 6a As shown;

[0049] 4b. Single-piece processing: centering is done by external shape to ensure dimensions. like Figure 6b As shown;

[0050] 5) Grinding machine processing: The grinding machine is a BST250 water grinding machine, and the grinding wheel is a 180# white corundum grinding wheel. The outer plane of the previous slow wire machining is clamped and positioned, and the wire ends of the slow wire machining are removed.

[0051] 6) The OKUMA XHAD765 machine tool uses a D4mm tungsten carbide four-flute end mill and a D2mm x 90° chamfering cutter. A precision vise is used to clamp the R1.1 outer surface, and a φ1H7 precision hole is used for positioning. A 1.5mm diameter four-flute tungsten carbide end mill is used to machine the φ2.5 outer surface and the R0.75 arc. A 2mm diameter 90° chamfering cutter is used to machine the C0.15 chamfer. Figure 7 As shown; rotate 180 degrees to reverse the clamping position and machine the reverse side features;

[0052] 7) Grinding: Using a precision bench vise with 45° angle blocks to clamp the R1.1 outer surface, a diamond dressing wheel is used to clean the side, and a 180# white corundum wheel is used to machine the C0.45 chamfer. Figure 8 As shown.

[0053] In summary, this invention scientifically optimizes the process, employing multiple slow wire cutting and EDM, which greatly reduces workpiece deformation caused by stress release during machining, ensuring precision hole positions of 2±0.01mm and 3±0.01mm, and improving part shape. And the dimensional accuracy pass rate, such as the concentricity of the Φ2.03H7 hole being 0.02;

[0054] By employing multi-pass slow wire cutting, the stress generated by traditional tooling is reduced, the product does not deform, and dimensional accuracy is greatly guaranteed.

[0055] The six-piece combination processing method significantly improves processing efficiency, ensures good consistency in part dimensions, and is suitable for mass production.

[0056] The entire process is simple and stable, and multiple precision bench vises are used for clamping, making the processing operation simple and fast, suitable for batch processing, and with a high pass rate. It solves the common problems of inconvenient clamping of irregular parts, difficulty in controlling dimensional accuracy, and low processing efficiency.

[0057] 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.

[0058] 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.

[0059] 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 processing core components of ITC testing equipment, characterized in that: Includes the following steps: 1) Prepare a rectangular sheet of material. Use a slow wire cutting machine, assembling six pieces. Position the bottom and left sides using a precision vise, clamping the right side. Use 0.2mm diameter molybdenum wire. First, roughen the outline, leaving a 0.1mm allowance, at a speed of 0.9mm / min, voltage 21-24V, and current 0.7A. Then, roughly trim the outline, leaving a 0.05mm allowance, at a speed of 0.5mm / min, keeping the voltage constant and adjusting the current to 0.5A. Finally, finely trim the outline to the required dimensions, at a speed of 0.3mm / min, keeping the voltage constant and the current 0.3A. Dimensional tolerances; 2) On a machining center, using the external shape for positioning and side clamping, a 4mm diameter, 90° center drill bit is used to drill a center hole with a chamfer of C0.15; a 1.5mm tungsten carbide drill bit is used to machine the M1.6 threaded pilot hole; an M1.6 forming tap is used to machine the M1.6 thread; a φ0.8 tungsten carbide drill bit is used to machine the φ1H7 thread through hole; rotate 180° to reverse the clamping position, maintaining the same positioning method, and machine the reverse side. 3) Electrical discharge machining: Position the left and bottom sides, clamp the right side, and use a 2.03 copper rod electrode to machine the φ2.03H7 precision hole; rotate 180° to reverse the clamping, keep the positioning method unchanged, and machine the φ2.03H7 precision hole on the other side; 4) Slow wire processing; 4a. Using the external shape for positioning, perform six-piece assembly machining, clamping with a precision vise, and machine the φ1H7 precision hole. First, rough-cut to φ0.9mm at a speed of 0.9mm / minute, voltage 21-24V, and current 0.7A. Then, rough-finish to φ0.95mm at a speed of 0.5mm / minute, keeping the voltage constant but adjusting the current to 0.5A. Finally, finish-finish to a depth of several millimeters. Speed ​​0.3 mm / min, constant voltage, current 0.3 A; not disassembled, machined shape, 2±0.01, 3±0.

01. Dimensions to quantity; 4b. Single-piece processing: centering is done by external shape to ensure dimensions. 5) Grinding: The outer plane of the previous slow wire machining process is clamped and positioned, and the wire ends of the slow wire machining are removed; 6) On a machining center, clamp the R1.1 outer surface with a vise, position it with a φ1H7 precision hole, machine the φ2.5 outer surface and R0.75 arc with a 1.5mm diameter 4-flute tungsten carbide end mill, and machine the C0.15 chamfer with a 2mm diameter 90° chamfering cutter; rotate 180 degrees to reverse the clamping and machine the reverse side. 7) Grinding: Clamp the R1.1 outer surface with a bench vise using a 45° angle block, use a diamond dressing wheel to clean the side, and use an 180# white corundum grinding wheel to machine the C0.45 chamfer.

2. The processing method for the core component of the ITC testing equipment according to claim 1, characterized in that: Step 2) The machining center is an OKUMA XHAD765 machine tool, using a D4mm x 90° chamfering cutter, D1.5mm and D0.8mm tungsten carbide drill bits and an M1.6 forming tap.

3. The processing method for the core component of the ITC testing equipment according to claim 1, characterized in that: Step 3) The EDM machine used is the Sodick AG40L mirror EDM machine.

4. The processing method for the core component of the ITC testing equipment according to claim 1, characterized in that: Step 4a: The slow wire cutting machine used is a Sodick ALN 400G machine tool, using φ0.20mm molybdenum wire, and is processed in sets of six.

5. The processing method for the core component of the ITC testing equipment according to claim 1, characterized in that: Step 5) The grinding machine used for grinding is a BST250 water grinding machine, and the grinding wheel is a 180# white corundum grinding wheel.

6. The processing method for the core component of the ITC testing equipment according to claim 1, characterized in that: Step 6) The machining center is an OKUMA XHAD765 machine tool, using a D4mm tungsten carbide four-flute end mill and a D2mm x 90° chamfering cutter.

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