Linear cutting machining clamp for necking framework

Abstract

The utility model relates to the technical field of die machining, in particular to a linear cutting machining clamp for a necking framework. The clamp comprises a first fixing seat, a central positioning shaft, an indexing positioning needle, a pressing plate, a fixing part and a second fixing seat, a first cavity is formed in the first fixing seat, first mounting holes are formed in the periphery of the first fixing seat, a second cavity is formed in the second fixing seat, and second mounting holes are formed in the periphery of the second fixing seat; the indexing positioning needle penetrates through a third mounting hole in the framework workpiece and extends into the first mounting hole or the second mounting hole; a positioning hole is formed in the center of the top face of the center positioning shaft, a shaft hole is formed in the center of the pressing plate, and the fixing piece penetrates through the shaft hole and is fixed in the positioning hole. The included angle between the first fixing base and the horizontal plane is smaller than that between the second fixing base and the horizontal plane. The necking framework effectively solves the technical problems that in the prior art, when a necking framework is machined, the inclination angle of a linear cutting molybdenum wire needs to be frequently changed, so that the machining difficulty is large, and the machining precision is poor.

Description

Technical Field

[0001] This utility model relates to the field of mold processing technology, and in particular to a wire cutting fixture for narrowing skeleton. Background Technology

[0002] The necking skeleton is an important component of the necking core. Its periphery has mounting grooves for mounting the necking slider. The necking skeleton is used to provide a stable frame to support and fix components such as the necking slider.

[0003] For example, patent document CN221159395U discloses a machining fixture for a necked core assembly. The necked core clamped by this fixture consists of a necking drive frame mixed with four large necking sliders and four small necking sliders located around the necking drive frame. However, this fixture is used for machining the necked core assembly after the necking drive frame has been machined; it cannot be used alone to clamp the necking frame during the machining process of the necking frame.

[0004] Currently, when machining necking skeletons, the workpiece is typically placed vertically and kept stationary during subsequent processing. Then, the wire-cut molybdenum wire is tilted to create mounting grooves at different angles on the skeleton's surface. This method requires frequent adjustments to the wire-cut molybdenum wire's tilt angle, ensuring precise angles with each adjustment. This complex operation relies heavily on operator experience, resulting in high machining difficulty and poor precision for necking skeletons. Utility Model Content

[0005] This invention provides a wire EDM fixture for narrowed skeletons, which solves the technical problem in the prior art that the tilt angle of the wire EDM molybdenum wire needs to be frequently changed during the processing of narrowed skeletons, resulting in high processing difficulty and poor processing accuracy.

[0006] To solve the above problems, the wire EDM fixture for narrowing skeletons provided by this utility model adopts the following technical solution:

[0007] A wire EDM fixture for narrowing skeletons includes a first fixed seat, a central positioning shaft, an indexing positioning pin, a pressure plate, a fixing component, and a second fixed seat.

[0008] The first fixing seat has a first cavity extending along its length for mounting the central positioning shaft, and the first fixing seat has a first mounting hole extending along its length in the circumferential direction. The second fixing seat has a second cavity extending along its length for mounting the central positioning shaft, and the second fixing seat has a second mounting hole extending along its length in the circumferential direction.

[0009] The indexing positioning pin passes through the third mounting hole opened in the circumference of the skeleton workpiece and extends into the first mounting hole or the second mounting hole.

[0010] The center of the top surface of the center positioning shaft is provided with a positioning hole, the center of the pressure plate is provided with a shaft hole, and the fastener is used to pass through the shaft hole and be fixed in the positioning hole after the pressure plate is installed on the top surface of the skeleton workpiece.

[0011] The angle between the first fixed base and the horizontal plane is smaller than the angle between the second fixed base and the horizontal plane.

[0012] The beneficial effects of the wire EDM fixture for narrowing skeleton provided by this utility model are as follows: By setting a fixture including a first fixed seat and a second fixed seat, and making the angle between the first fixed seat and the horizontal plane smaller than the angle between the second fixed seat and the horizontal plane, when machining T-slots on the skeleton workpiece, the skeleton workpiece is first installed on the first fixed seat, and then the reliability of the skeleton workpiece installation on the first fixed seat is enhanced by the central positioning shaft, the indexing positioning pin and the positioning element in sequence. Then, T-slots of the first angle can be machined on the skeleton workpiece. After the machining is completed, the above clamping steps are repeated to clamp the skeleton workpiece on the second fixed seat, and then mounting slots of the second angle can be machined on the skeleton workpiece. The fixture provided by this utility model has a simple structure. When using it, the angle between the skeleton and the horizontal plane can be adjusted simply by installing the skeleton workpiece on different fixed seats. The clamping process is simple, and the angle of the molybdenum wire does not need to be changed to achieve the machining of T-slots of different angles on the skeleton workpiece, which reduces the machining difficulty while ensuring machining accuracy.

[0013] Through the above-mentioned design, this utility model effectively solves the technical problem in the prior art that the inclination angle of the wire-cut molybdenum wire needs to be frequently changed during the processing of the narrowed skeleton, resulting in high processing difficulty and poor processing accuracy.

[0014] Furthermore, the length of the central positioning shaft is greater than the length of the first cavity and greater than the length of the second cavity.

[0015] Furthermore, the central positioning shaft has an inverted T-shaped structure, which includes a vertical section and a horizontal section. The radial dimension of the vertical section is the same as the radial dimension of the first cavity and the second cavity. The inner sidewalls of the first fixing seat and the second fixing seat are provided with grooves that match the horizontal section.

[0016] Furthermore, the bottom of the horizontal segment has a notched section for fitting against the worktable.

[0017] Furthermore, the angle between the first fixing base and the horizontal plane is 8°.

[0018] Furthermore, the angle between the second fixing seat and the horizontal plane is 15°.

[0019] Furthermore, the fastener is a screw.

[0020] Furthermore, the positioning hole is a threaded hole.

[0021] Furthermore, the pressure plate is a nut.

[0022] Furthermore, the top surfaces of both the first and second fixing seats have bosses that match the inner circumference of the skeleton workpiece, so as to install the skeleton workpiece. Attached Figure Description

[0023] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0024] Figure 1 This is a schematic diagram of the application structure of the wire EDM fixture for narrowing skeleton provided by this utility model when machining an 8° T-groove.

[0025] Figure 2 This is a schematic diagram illustrating the application structure of the wire EDM fixture for narrowing skeleton provided by this utility model when machining a 15° T-slot.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. First fixed seat; 2. Indexing and positioning pin; 3. Pressure plate; 4. Fixing component; 5. Second fixed seat; 6. Vertical section; 7. Horizontal section; 8. Skeleton workpiece; 9. Boss. Detailed Implementation

[0028] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0029] Embodiment 1 of the wire EDM fixture for reducing the neck diameter provided by this utility model:

[0030] like Figure 1 and Figure 2 As shown, the wire EDM fixture for narrowing skeletons includes a first fixed seat 1, a central positioning shaft, an indexing positioning pin 2, a pressure plate 3, a fixing element 4, and a second fixed seat 5. The top surface of the first fixed seat 1 is used to mount the skeleton workpiece 8. Both the first fixed seat 1 and the second fixed seat 5 are equipped with a central positioning shaft, an indexing positioning pin 2, a pressure plate 3, and a fixing element 4.

[0031] The structure of the first fixing seat 1 and the second fixing seat 5 is described below. The first fixing seat 1 has a first cavity extending along its length for mounting the central positioning shaft at its center, and the first fixing seat 1 has first mounting holes extending along its length at intervals around its circumference; the second fixing seat 5 has a second cavity extending along its length for mounting the central positioning shaft inside, and the second fixing seat 5 has second mounting holes extending along its length at intervals around its circumference; the first cavity and the second cavity have the same radial dimension.

[0032] Wherein, the angle between the first fixed base 1 and the horizontal plane is smaller than the angle between the second fixed base 5 and the horizontal plane. In this embodiment, as... Figure 1 As shown, the angle between the first fixed base 1 and the horizontal plane is 8°, as... Figure 2 As shown, the angle between the second fixed seat 5 and the horizontal plane is 15°; in other embodiments, the angle between the first fixed seat 1 and the second fixed seat 5 and the horizontal plane is determined according to the specific processing requirements, and it is only necessary to ensure that the angle between the two fixed seats and the horizontal plane is consistent with the angle of the T-groove to be processed on the skeleton workpiece 8.

[0033] It should be noted that the length of the central positioning shaft is greater than the length of the first cavity and the second cavity.

[0034] Next, we will describe the installation of the center positioning shaft, indexing pin 2, pressure plate 3, and fixing member 4 on the first fixed seat 1 and the second fixed seat 5. The center positioning shaft is installed in the first cavity or the second cavity; the outer periphery of the skeleton workpiece 8 is provided with a third mounting hole at intervals, and the indexing pin 2 passes through the third mounting hole and extends into the first mounting hole or the second mounting hole; the center of the top surface of the center positioning shaft is provided with a positioning hole, and the center of the pressure plate 3 is provided with a shaft hole. When the skeleton workpiece 8 is installed on the first fixed seat 1 or the second fixed seat 5, the pressure plate 3 is installed on the top surface of the skeleton workpiece 8, and the positioning member passes through the shaft hole and is fixed in the positioning hole.

[0035] Specifically, the central positioning shaft has an inverted T-shaped structure, which includes a horizontal section 7 and a vertical section 6. The radial dimension of the vertical section 6 is the same as the radial dimension of the first cavity and the second cavity. The inner sidewalls of the first fixed seat 1 and the second fixed seat 5 are provided with grooves that match the horizontal section 7. The right end of the horizontal section 7 has a notched corner section for fitting with the top surface of the worktable.

[0036] In this embodiment, the fixing element 4 is a screw, the positioning hole is a threaded hole, and the pressure plate 3 is a nut; in other embodiments, the positioning element is a pin, the positioning hole is a pin hole, and the pressure plate 3 is a plate-shaped structure with a central shaft hole.

[0037] In this embodiment, there are four first mounting holes, four second mounting holes, and four third mounting holes, which are evenly distributed at intervals on the outer periphery of the first fixing seat 1, on the outer periphery of the second fixing seat 5, and on the outer periphery of the skeleton workpiece 8, respectively. In other embodiments, the number of first mounting holes, second mounting holes, and third mounting holes is determined according to specific processing requirements.

[0038] In addition, the top surfaces of the first and second fixed seats also have bosses 9 that match the inner circumferential shape of the skeleton workpiece, so as to install the skeleton workpiece 8.

[0039] The working principle of the wire EDM fixture for narrowing skeleton provided by this utility model is as follows:

[0040] When machining the 8°T groove on the skeleton workpiece 8, first, the central positioning shaft passes through the first cavity from bottom to top; then, the right end of the horizontal section 7 of the central positioning shaft contacts the worktable, the first fixed seat 1 is fixed on the worktable, the skeleton workpiece 8 is fitted onto the upper end of the central positioning shaft, and the bottom surface of the skeleton workpiece 8 abuts against the top surface of the first fixed seat 1. The center of the skeleton workpiece 8 is corrected by the central positioning shaft, so that the skeleton workpiece 8 and the first fixed seat 1 are concentric; then, an indexing positioning pin 2 is inserted into each third positioning hole, and the indexing positioning pins are... The bottom end of 2 extends into the first mounting hole to further enhance the reliability of the connection between the skeleton workpiece 8 and the first fixed seat 1; finally, the pressure plate 3 is installed on the top of the skeleton workpiece 8, and the positioning piece is passed through the shaft hole from top to bottom and screwed into the positioning hole to complete the clamping of the skeleton workpiece 8 on the first fixed seat 1; after the skeleton workpiece 8 is clamped, the first 8°T groove can be cut vertically using a molybdenum wire. After the first 8°T groove is processed, the skeleton workpiece 8 is rotated 90° and the above clamping method is repeated to process the remaining 8°T grooves in sequence.

[0041] After the 8°T groove is machined, repeat the above clamping steps to clamp the skeleton workpiece 8 on the second fixed seat 5, and then the 15°T groove can be machined.

[0042] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0043] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A wire EDM fixture for narrowing skeletons, characterized in that, It includes a first fixed seat, a central positioning shaft, an indexing positioning pin, a pressure plate, a fixing component, and a second fixed seat; The first fixing seat has a first cavity extending along its length for mounting the central positioning shaft, and the first fixing seat has a first mounting hole extending along its length in the circumferential direction. The second fixing seat has a second cavity extending along its length for mounting the central positioning shaft, and the second fixing seat has a second mounting hole extending along its length in the circumferential direction. The indexing positioning pin passes through the third mounting hole opened in the circumference of the skeleton workpiece and extends into the first mounting hole or the second mounting hole. The center of the top surface of the center positioning shaft is provided with a positioning hole, the center of the pressure plate is provided with a shaft hole, and the fastener is used to pass through the shaft hole and fix in the positioning hole after the pressure plate is installed on the top surface of the skeleton workpiece. The angle between the first fixed base and the horizontal plane is smaller than the angle between the second fixed base and the horizontal plane.

2. The wire EDM fixture for narrowing skeletons according to claim 1, characterized in that, The length of the central positioning shaft is greater than the length of the first cavity and greater than the length of the second cavity.

3. The wire EDM fixture for narrowing skeletons according to claim 1 or 2, characterized in that, The central positioning shaft has an inverted T-shaped structure, which includes a vertical section and a horizontal section. The radial dimension of the vertical section is the same as the radial dimension of the first cavity and the second cavity. The inner sidewalls of the first fixing seat and the second fixing seat are provided with grooves that match the horizontal section.

4. The wire EDM fixture for narrowing skeletons according to claim 3, characterized in that, The bottom of the horizontal section has a notched section for fitting against the workbench.

5. The wire EDM fixture for narrowing skeletons according to claim 1 or 2, characterized in that, The angle between the first fixed base and the horizontal plane is 8°.

6. The wire EDM fixture for reducing the neck of the skeleton according to claim 5, characterized in that, The second fixing base has an angle of 15° with the horizontal plane.

7. The wire EDM fixture for narrowing skeletons according to claim 1 or 2, characterized in that, The fastener is a screw.

8. The wire EDM fixture for narrowing skeletons according to claim 7, characterized in that, The positioning hole is a threaded hole.

9. The wire EDM fixture for narrowing skeletons according to claim 7, characterized in that, The pressure plate is a nut.

10. The wire EDM fixture for narrowing skeletons according to claim 1 or 2, characterized in that, The top surfaces of both the first and second fixing seats have bosses that match the inner circumference of the skeleton workpiece, so as to install the skeleton workpiece.

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