Machining and measuring jig capable of adjusting form and location tolerance of aspheric asymmetric trimming part

Abstract

The utility model belongs to the technical field of measuring jigs, and particularly relates to an aspheric asymmetric trimming part form and location tolerance adjustable processing measuring jig which comprises a base, the top of the base is fixedly connected with a working table used for placing an aspheric asymmetric trimming part, the top of the working table is provided with a positioning mechanism, and the positioning mechanism is connected with the base and used for positioning the aspheric asymmetric trimming part. A magnetic attraction fixing mechanism used for fixing the aspheric asymmetric trimming part is arranged on the workbench, and an adjustable measuring mechanism used for measuring form and location tolerance is arranged on the workbench. The device is reasonable in structural design, can position and magnetically attract and fix aspheric asymmetric trimming parts of different specifications, prevents the measurement precision from being influenced by displacement shaking during testing, and can adjust the measurement mechanism at will so as to measure the height of any position of the aspheric asymmetric trimming part and the trimming distance, thereby improving the measurement precision. And the accuracy of measuring the form and location tolerance is improved.

Description

Technical Field

[0001] This utility model relates to the field of measuring fixture technology, and in particular to a machining measuring fixture with adjustable form and position tolerances for aspherical asymmetrical cut-edge parts. Background Technology

[0002] For aspherical asymmetrical cut-edge parts such as lenses and blades in optical instruments like microscopes and telescopes, measuring fixtures are needed to accurately measure their form and position tolerances in order to improve optical imaging quality and meet the needs of professional optical applications.

[0003] However, the existing adjustable form and position tolerance machining and measuring fixtures for aspherical asymmetrical cut-edge parts have shortcomings. They are inconvenient for effectively positioning and fixing the aspherical asymmetrical cut-edge parts, and displacement and shaking are prone to occur during measurement, affecting the measurement accuracy. Furthermore, the measuring mechanism is inconvenient to adjust, making it difficult to measure any position of the aspherical asymmetrical cut-edge parts, resulting in large errors in the measured form and position tolerances. Therefore, we propose an adjustable form and position tolerance machining and measuring fixture for aspherical asymmetrical cut-edge parts to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings mentioned above by proposing an adjustable form and position tolerance machining and measuring fixture for asymmetric cut-edge parts with aspherical surfaces.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An adjustable form and position tolerance machining and measuring fixture for aspherical asymmetrical cut-edge parts includes a base, a worktable for placing the aspherical asymmetrical cut-edge parts is fixedly connected to the top of the base, a positioning mechanism is provided on the top of the worktable, a magnetic fixing mechanism for fixing the aspherical asymmetrical cut-edge parts is provided on the worktable, an adjustable measuring mechanism for measuring form and position tolerances is provided on the worktable, and four support legs are fixedly connected to the bottom of the base.

[0007] As a preferred embodiment of the present invention, the positioning mechanism includes a threaded groove formed on the top of the workbench, a threaded rod threadedly fitted in the threaded groove, and a positioning rod fixedly connected to the top end of the threaded rod.

[0008] As a preferred embodiment of this utility model, the magnetic fixing mechanism includes a drive motor fixedly connected to the bottom of the base and four electromagnets fixedly connected to the top of the workbench. A lifting screw is fixedly connected to the output shaft of the drive motor. An insulating plate is threaded onto the outer side of the lifting screw. Four lower conductive plates are fixedly connected to the top of the insulating plate. An upper conductive plate is fixedly connected to the bottom of the electromagnets. The upper conductive plate movably abuts against the top of the lower conductive plate.

[0009] As a preferred embodiment of this invention, a connecting rod is fixedly connected to the bottom of the electromagnet, and the bottom end of the connecting rod is fixedly connected to the top of the upper conductive sheet.

[0010] In a preferred embodiment of this invention, four limiting rods are fixedly connected between the base and the worktable, and the insulating plate is slidably sleeved on the outside of the four limiting rods.

[0011] As a preferred embodiment of this utility model, a bearing is fixedly connected to the top inner wall of the workbench, and the lifting screw is fixedly sleeved inside the inner ring of the bearing.

[0012] In a preferred embodiment of this utility model, the adjustable measuring mechanism includes an annular slide rail fixedly sleeved on the outside of the worktable, a slider slidably sleeved inside the annular slide rail, a scale plate fixedly connected to one side of the slider, a sliding sleeve slidably sleeved on the outside of the scale plate, a vertical rod fixedly connected to the top of the sliding sleeve, a horizontal rod fixedly connected to the top of the vertical rod, a cylinder fixedly connected to one end of the horizontal rod, a return spring fixedly connected to the bottom inner wall of the cylinder, a sliding plate fixedly connected to the top of the return spring, a measuring rod fixedly sleeved inside the sliding plate, and a pressing plate fixedly connected to the top of the measuring rod.

[0013] As a preferred embodiment of this utility model, a limiting plate is provided on one side of the scale plate, and a screw is threadedly connected to one side of the limiting plate. The limiting plate is fixedly connected to one side of the scale plate by the screw.

[0014] In this utility model, an adjustable form and position tolerance machining and measuring fixture for aspherical asymmetrical cut-edge parts is provided. The threaded rod and threaded groove facilitate the disassembly and replacement of positioning rods of different sizes to meet the positioning needs of aspherical asymmetrical cut-edge parts of different specifications. The drive motor rotates the lifting screw, which in turn moves the insulating plate and four lower conductive plates upwards to contact the upper conductive plate. Since the four lower conductive plates are connected in parallel to the power supply, when the upper and lower conductive plates contact each other, the four electromagnets are connected to the parallel power supply for power. Under power, the four electromagnets can attract and fix the aspherical asymmetrical cut-edge parts. Conversely, when the four lower conductive plates move downwards and do not contact the upper conductive plates, the electromagnets lose power and their magnetic force is deactivated, thus preventing the attraction and fixation of the aspherical asymmetrical cut-edge parts, allowing the aspherical asymmetrical cut-edge parts to be removed.

[0015] In this invention, an adjustable form and position tolerance machining and measuring fixture for aspherical asymmetrical cut-edge parts is described. Through the sliding connection between a ring slide rail and a slider, the orientation of the scale plate and the vertical rod can be adjusted to measure the outer distance of the aspherical asymmetrical cut-edge parts at different positions. Through the sliding connection between the sliding sleeve and the scale plate, the vertical rod can be adjusted to abut against the outer side of the aspherical asymmetrical cut-edge part, facilitating the measurement of the cut-edge distance. Simultaneously, the position of the measuring rod can be adjusted to accommodate any position of the aspherical asymmetrical cut-edge part. The height of the part is measured. After adjustment, the pressure plate is pressed. The pressure plate moves the measuring rod and slide downward and squeezes the return spring, so that the measuring rod abuts against the top of the aspherical asymmetric cut edge part. Since the distance between the measuring rod and the worktable is constant, the height of that position can be measured according to the distance the measuring rod moves downward. In addition, the height and cutting edge distance of any position of the aspherical asymmetric cut edge part can be measured. Based on the measurement data and the data of the standard aspherical asymmetric cut edge part, the form and position tolerance can be calculated, making the measurement of form and position tolerance more accurate.

[0016] This utility model has a reasonable structural design, which can position and magnetically fix non-spherical asymmetrical cut-edge parts of different specifications, avoiding displacement and shaking during testing that would affect the measurement accuracy. Furthermore, the measuring mechanism can be arbitrarily adjusted to measure the height and cutting edge distance at any position of the non-spherical asymmetrical cut-edge parts, thereby improving the accuracy of the measurement of geometric tolerances. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a machining and measuring fixture with adjustable form and position tolerances for aspherical asymmetric cut-edge parts proposed in this utility model;

[0018] Figure 2This is a cross-sectional view of an adjustable form and position tolerance machining and measuring fixture for aspherical asymmetric cut-edge parts proposed in this utility model.

[0019] Figure 3 An exploded view of a machining and measuring fixture with adjustable form and position tolerances for aspherical asymmetric cut-edge parts proposed in this utility model;

[0020] Figure 4 This is a cross-sectional view of the cylindrical body of a machining and measuring fixture for an aspherical asymmetric cut edge part with adjustable form and position tolerances, as proposed in this utility model.

[0021] In the diagram: 1. Base; 2. Workbench; 3. Support leg; 4. Positioning mechanism; 5. Magnetic fixing mechanism; 6. Measuring mechanism; 41. Positioning rod; 42. Threaded rod; 43. Threaded groove; 51. Drive motor; 52. Limiting rod; 53. Lifting screw; 54. Insulating plate; 55. Lower conductive plate; 56. Upper conductive plate; 57. Connecting rod; 58. Electromagnet; 601. Circular slide rail; 602. Scale plate; 603. Sliding sleeve; 604. Limiting plate; 605. Screw; 606. Vertical rod; 607. Horizontal rod; 608. Pressing plate; 609. Measuring rod; 610. Cylinder; 611. Return spring; 612. Slide plate; 613. Slider. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 An adjustable form and position tolerance machining and measuring fixture for aspherical asymmetrical cut-edge parts includes a base 1, a worktable 2 for placing the aspherical asymmetrical cut-edge parts is fixedly connected to the top of the base 1, a positioning mechanism 4 is provided on the top of the worktable 2, a magnetic suction fixing mechanism 5 for fixing the aspherical asymmetrical cut-edge parts is provided on the worktable 2, an adjustable measuring mechanism 6 for measuring form and position tolerances is provided on the worktable 2, and four support legs 3 are fixedly connected to the bottom of the base 1.

[0024] Specifically, refer to Figure 1-3 As shown, the positioning mechanism 4 includes a threaded groove 43 on the top of the worktable 2, a threaded rod 42 is threaded in the threaded groove 43, and a positioning rod 41 is fixedly connected to the top of the threaded rod 42.

[0025] The above solution is adopted: depending on the different specifications, the positioning holes on the aspherical asymmetrical cut edge parts are different. By setting the threaded rod 42 and the threaded groove 43, it is convenient to disassemble and replace the positioning rod 41 of different specifications and sizes, so as to meet the positioning use of aspherical asymmetrical cut edge parts of different specifications. The cutting edge distance and the height at different positions of the aspherical asymmetrical cut edge parts are measured with the positioning rod 41 as the axis.

[0026] Specifically, refer to Figure 1 and Figure 2 As shown, the magnetic fixing mechanism 5 includes a drive motor 51 fixedly connected to the bottom of the base 1 and four electromagnets 58 fixedly connected to the top of the workbench 2. A lifting screw 53 is fixedly connected to the output shaft of the drive motor 51. An insulating plate 54 is threaded on the outer side of the lifting screw 53. Four lower conductive plates 55 are fixedly connected to the top of the insulating plate 54. An upper conductive plate 56 is fixedly connected to the bottom of the electromagnet 58. The upper conductive plate 56 movably abuts against the top of the lower conductive plate 55. A connecting rod 57 is fixedly connected to the bottom of the electromagnet 58. The bottom end of the connecting rod 57 is fixedly connected to the top of the upper conductive plate 56.

[0027] The above solution is as follows: The aspherical asymmetrical cut edge part is positioned on the positioning rod 41. The drive motor 51 is started, which drives the rotation of the lifting screw 53. The lifting screw 53 causes the insulating plate 54 and the four lower conductive plates 55 to move upward and come into contact with the upper conductive plate 56. Since the four lower conductive plates 55 are connected in parallel to the power supply (not shown in the figure), when the upper and lower conductive plates come into contact, the four electromagnets 58 are connected to the parallel power supply for power supply. When energized, the four electromagnets 58 can attract and fix the aspherical asymmetrical cut edge part. Conversely, when the four lower conductive plates 55 move downward and do not come into contact with the upper conductive plate 56, the electromagnets 58 will be de-energized and lose their magnetic force, thus failing to attract and fix the aspherical asymmetrical cut edge part, and the aspherical asymmetrical cut edge part can be removed.

[0028] Specifically, four limiting rods 52 are fixedly connected between the base 1 and the worktable 2. The insulating plate 54 is slidably sleeved on the outside of the four limiting rods 52, which facilitates the guidance of the insulating plate 54 and makes its lifting and lowering more stable.

[0029] Specifically, a bearing is fixedly connected to the inner wall of the top of the worktable 2, and the lifting screw 53 is fixedly sleeved in the inner ring of the bearing, which helps to support the lifting screw 53 and make its rotation more stable.

[0030] Specifically, refer to Figure 1 and Figure 4As shown, the adjustable measuring mechanism 6 includes an annular slide rail 601 fixedly sleeved on the outside of the worktable 2. A slider 613 is slidably sleeved inside the annular slide rail 601. A scale plate 602 is fixedly connected to one side of the slider 613. A sliding sleeve 603 is slidably sleeved on the outside of the scale plate 602. A vertical rod 606 is fixedly connected to the top of the sliding sleeve 603. A horizontal rod 607 is fixedly connected to the top of the vertical rod 606. A cylinder 610 is fixedly connected to one end of the horizontal rod 607. A return spring 611 is fixedly connected to the inner wall of the bottom of the cylinder 610. A sliding plate 612 is fixedly connected to the top of the return spring 611. A measuring rod 609 is fixedly sleeved inside the sliding plate 612. A pressing plate 608 is fixedly connected to the top of the measuring rod 609.

[0031] Using the above scheme: The sliding connection between the annular slide rail 601 and the slider 613 allows adjustment of the orientation of the scale plate 602 and the vertical rod 606, enabling measurement of the outer distance of the aspherical asymmetrical cut edge parts at different positions. The sliding connection between the sliding sleeve 603 and the scale plate 602 allows adjustment of the vertical rod 606, making it abut against the outer side of the aspherical asymmetrical cut edge parts, facilitating measurement of the cut edge distance. Simultaneously, the position of the measuring rod 609 can be adjusted to measure the height of the aspherical asymmetrical cut edge parts at any position. Once adjusted... When the pressing plate 608 is pressed, it causes the measuring rod 609 and the slide plate 612 to move downward and compress the return spring 611, so that the measuring rod 609 abuts against the top of the aspherical asymmetric cut edge part. Since the distance between the measuring rod 609 and the worktable 2 is constant, the height of that position can be measured according to the distance the measuring rod 609 moves downward. In this way, the height and cutting edge distance of any position of the aspherical asymmetric cut edge part can be measured. By measuring the measurement data and the data of the standard aspherical asymmetric cut edge part, the form and position tolerance can be calculated, making the measurement of form and position tolerance more accurate.

[0032] Specifically, a limiting plate 604 is provided on one side of the scale plate 602, and a screw 605 is threadedly connected to one side of the limiting plate 604. The limiting plate 604 is fixedly connected to one side of the scale plate 602 by the screw 605, which facilitates the limiting and disassembly of the sliding sleeve.

[0033] In this utility model, during use, the positioning holes on the aspherical asymmetrical cut edge parts are different according to different specifications. The setting of threaded rod 42 and threaded groove 43 facilitates the disassembly and replacement of positioning rods 41 of different sizes, so as to meet the positioning needs of aspherical asymmetrical cut edge parts of different specifications. The cutting edge distance and the height at different positions of the aspherical asymmetrical cut edge parts are measured with the positioning rod 41 as the axis.

[0034] Position the aspherical asymmetrical cut edge part on the positioning rod 41. Start the drive motor 51, which drives the lifting screw 53 to rotate. The lifting screw 53 causes the insulating plate 54 and the four lower conductive plates 55 to move upward and come into contact with the upper conductive plate 56. Since the four lower conductive plates 55 are connected in parallel to the power supply (not shown in the figure), when the upper and lower conductive plates come into contact, the four electromagnets 58 are connected to the parallel power supply for power supply. When energized, the four electromagnets 58 can attract and fix the aspherical asymmetrical cut edge part. Conversely, when the four lower conductive plates 55 move downward and do not come into contact with the upper conductive plate 56, the electromagnets 58 will be de-energized and lose their magnetic force, thus failing to attract and fix the aspherical asymmetrical cut edge part. The aspherical asymmetrical cut edge part can then be removed.

[0035] Finally, through the sliding connection between the annular slide rail 601 and the slider 613, the orientation of the scale plate 602 and the vertical rod 606 can be adjusted to measure the outer distance of the aspherical asymmetrical cut edge parts at different positions. Through the sliding connection between the sliding sleeve 603 and the scale plate 602, the vertical rod 606 can be adjusted to abut against the outer side of the aspherical asymmetrical cut edge parts to measure the cutting distance. Simultaneously, the position of the measuring rod 609 can be adjusted to measure the height of the aspherical asymmetrical cut edge parts at any position. After adjustment, press... Pressing the pressure plate 608 causes the measuring rod 609 and the slide plate 612 to move downwards and compress the return spring 611, making the measuring rod 609 abut against the top of the aspherical asymmetric cut edge part. Since the distance between the measuring rod 609 and the worktable 2 is constant, the height at that position can be measured based on the distance the measuring rod 609 moves downwards. This allows for the measurement of the height and cutting edge distance at any position of the aspherical asymmetric cut edge part. By comparing the measurement data with the data of a standard aspherical asymmetric cut edge part, the geometric tolerance can be calculated, making the measurement of geometric tolerance more accurate.

Claims

1. A machining and measuring fixture with adjustable form and position tolerances for aspherical asymmetrical cut-edge parts, characterized in that, The base (1) includes a base (1), a worktable (2) for placing a non-spherical asymmetrical cut edge part is fixedly connected to the top of the base (1), a positioning mechanism (4) is provided on the top of the worktable (2), a magnetic fixing mechanism (5) for fixing the non-spherical asymmetrical cut edge part is provided on the worktable (2), an adjustable measuring mechanism (6) for measuring geometric tolerances is provided on the worktable (2), and four support legs (3) are fixedly connected to the bottom of the base (1).

2. The adjustable form and position tolerance machining and measuring fixture for asymmetric cut edges of aspherical parts according to claim 1, characterized in that, The positioning mechanism (4) includes a threaded groove (43) on the top of the workbench (2), and a threaded rod (42) is threaded in the threaded groove (43). A positioning rod (41) is fixedly connected to the top of the threaded rod (42).

3. The adjustable form and position tolerance machining and measuring fixture for asymmetric aspherical cut-edge parts according to claim 1, characterized in that, The magnetic fixing mechanism (5) includes a drive motor (51) fixedly connected to the bottom of the base (1) and four electromagnets (58) fixedly connected to the top of the workbench (2). A lifting screw (53) is fixedly connected to the output shaft of the drive motor (51). An insulating plate (54) is threaded on the outer side of the lifting screw (53). Four lower conductive plates (55) are fixedly connected to the top of the insulating plate (54). An upper conductive plate (56) is fixedly connected to the bottom of the electromagnet (58). The upper conductive plate (56) movably abuts against the top of the lower conductive plate (55).

4. The adjustable form and position tolerance machining and measuring fixture for asymmetric cut edges of aspherical parts according to claim 3, characterized in that, The bottom of the electromagnet (58) is fixedly connected to a connecting rod (57), and the bottom end of the connecting rod (57) is fixedly connected to the top of the upper conductive sheet (56).

5. A machining and measuring fixture with adjustable form and position tolerances for aspherical asymmetrical cut-edge parts according to claim 3, characterized in that, Four limiting rods (52) are fixedly connected between the base (1) and the workbench (2), and the insulating plate (54) is slidably sleeved on the outside of the four limiting rods (52).

6. The adjustable form and position tolerance machining and measuring fixture for aspherical asymmetrical cut-edge parts according to claim 3, characterized in that, A bearing is fixedly connected to the top inner wall of the workbench (2), and the lifting screw (53) is fixedly sleeved inside the inner ring of the bearing.

7. The adjustable form and position tolerance machining and measuring fixture for aspherical asymmetrical cut-edge parts according to claim 1, characterized in that, The adjustable measuring mechanism (6) includes an annular slide rail (601) fixedly sleeved on the outside of the workbench (2). A slider (613) is slidably sleeved inside the annular slide rail (601). A scale plate (602) is fixedly connected to one side of the slider (613). A sliding sleeve (603) is slidably sleeved on the outside of the scale plate (602). A vertical rod (606) is fixedly connected to the top of the sliding sleeve (603). A horizontal rod (607) is fixedly connected to the top of the vertical rod (606). A cylinder (610) is fixedly connected to one end of the horizontal rod (607). A return spring (611) is fixedly connected to the bottom inner wall of the cylinder (610). A sliding plate (612) is fixedly connected to the top of the return spring (611). A measuring rod (609) is fixedly sleeved inside the sliding plate (612). A pressing plate (608) is fixedly connected to the top of the measuring rod (609).

8. A machining and measuring fixture with adjustable form and position tolerances for aspherical asymmetrical cut-edge parts according to claim 7, characterized in that, A limiting plate (604) is provided on one side of the scale plate (602), and a screw (605) is threadedly connected to one side of the limiting plate (604). The limiting plate (604) is fixedly connected to one side of the scale plate (602) by the screw (605).

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