A rapid centering gauge device for workpiece positioning and measurement

Abstract

The utility model relates to work piece positioning technical field, concretely is a kind of work piece positioning measurement with quick centering gage device, including positioning mechanism, the positioning mechanism includes gage body, the inner wall of gage body is provided with sub pole, one end of sub pole is provided with semicircle block, one end of sub pole is rotatably connected with the side face one end of semicircle block, the inside of semicircle block is provided with bite disc, this work piece positioning measurement with quick centering gage device, by pulling the slide that changes, sub pole will gradually evolve from inclined state to vertical state, in this process, semicircle block will slide out from the inside of gage body, let bite disc contact work piece, in the time of contact, bite disc can be according to the shape of work piece, through self-adapting small-angle rotation adjustment posture, utilize its side face five notches and work piece outer contour form multiple-point contact occlusion, with the aid of semicircle block sliding drive bite disc synchronous displacement, make bite disc adhere to work piece curved surface.

Description

Technical Field

[0001] This utility model relates to the field of workpiece positioning technology, specifically to a rapid centering inspection device for workpiece positioning and measurement. Background Technology

[0002] Workpiece positioning refers to the process of using specific devices (such as gauges, fixtures, etc.) to restrict a workpiece to a definite and unique position according to the machining or measurement requirements during machining or measurement, so as to ensure the correct position of the workpiece relative to the machine tool, cutting tool, or measurement reference.

[0003] In existing technologies, when measuring a workpiece, it is necessary to use a fixture to quickly locate and compare the key dimensions, shape tolerances, and positional accuracy of the workpiece to ensure that the workpiece meets the design standards. This simple method can improve measurement efficiency and minimize human error.

[0004] However, before measuring a workpiece, it is necessary to position the workpiece. If the workpiece has a curved surface, the positioning components on the fixture may not be able to adapt to the complex curved surface contour of the workpiece to achieve multi-point uniform force positioning when fixed, which may lead to positioning deviation or local clamping that is too tight or too loose, affecting the consistency of the measurement reference. To address this, we propose a quick centering fixture device for workpiece positioning and measurement. Utility Model Content

[0005] One of the technical problems to be solved by this application is that the workpiece can be effectively positioned by adapting to the curved surface of the workpiece.

[0006] To solve the above-mentioned technical problems, this application provides a quick centering fixture device for workpiece positioning and measurement, including a positioning mechanism. An auxiliary mechanism is provided inside the positioning mechanism. The positioning mechanism includes a fixture body, with a sub-rod on the inner wall of the fixture body. A semi-circular block is provided at one end of the sub-rod, and one end of the sub-rod is rotatably connected to one side of the semi-circular block. A bite plate is provided on the inner side of the semi-circular block, and the inner side of the semi-circular block is rotatably connected to the center of the bite plate. A mother rod is provided at the top of the sub-rod, and the top of the sub-rod is rotatably connected to the top of the mother rod. A slide is provided at the bottom of the mother rod, and the bottom of the mother rod is rotatably connected to the inner wall of the slide.

[0007] In some embodiments, the auxiliary mechanism includes a main tube, a secondary tube is provided on the inner side of the bottom end of the main tube, the inner side of the bottom end of the main tube is slidably connected to the outer side of the top end of the secondary tube, a toothed plate is provided on the bottom end of the secondary tube, and the bottom end of the secondary tube is fixedly connected to the top side of the toothed plate.

[0008] In some embodiments, both the secondary tube and the main tube are provided with springs inside, the interiors of the secondary tube and the main tube are in contact with the outer side of the springs, and the top end of the main tube is fixedly connected to the interior of the slide.

[0009] In some embodiments, a groove is provided on the top side of the inspection fixture body, an inner plate is provided on the inner surface of the groove, the inner surface of the groove is slidably connected to the outer side of the inner plate, a limiting plate is provided on the inner side of the inner plate, and one end of the limiting plate is slidably connected to the inner side of the inner plate.

[0010] In some embodiments, a spring sheet is provided on the bottom side of the limiting plate, the bottom side of the limiting plate is fixedly connected to the top end of the spring sheet, the bottom side of the spring sheet is fixedly connected to the inner side of the inner plate, a protrusion is provided on the top side of the limiting plate, the top side of the limiting plate is fixedly connected to the bottom end of the protrusion, and the outer side of the protrusion is slidably engaged with the inner wall of one end of the slide block.

[0011] In some embodiments, a second toothed plate is provided on the top side of the inspection fixture body, the top side of the inspection fixture body is fixedly connected to the bottom end of the second toothed plate, and the inclined surface of the second toothed plate is in sliding contact with the inclined surface of the first toothed plate.

[0012] In some embodiments, the top side of the toothed plate is fixedly connected to the bottom end of the spring, and the top end of the spring is fixedly connected to the interior of the slide.

[0013] In some embodiments, a telescopic rod is provided on the bottom side of the inspection tool body, the bottom side of the inspection tool body is fixedly connected to the top end of the telescopic rod, a base is provided at the bottom end of the telescopic rod, and the bottom end of the telescopic rod is fixedly connected to the side of the base.

[0014] This utility model has at least the following beneficial effects:

[0015] 1. By pulling the slide block, the male rod and the female rod change. The male rod will gradually change from an inclined state to a vertical state. During this process, the semicircular block will slide out from the inside of the fixture body, allowing the bite plate to contact the workpiece. When in contact, the bite plate can adjust its posture by adaptive small-angle rotation according to the shape of the workpiece. It uses the five notches on its side to form a multi-point contact bite with the outer contour of the workpiece. With the help of the semicircular block sliding, the bite plate moves synchronously, so that the bite plate fits the curved surface of the workpiece.

[0016] 2. By inserting the protrusion into the slide block, a structural connection is formed between the slide block and the inner plate. As the slide block moves, the protrusion on the limiting plate restricts the range of movement of the slide block to prevent it from falling out. The inner plate supports the movement trajectory of the slide block, thereby ensuring that the slide block slides smoothly in the slide groove and preventing the first and second toothed plates from easily disengaging. At the same time, downward pressure is applied to the limiting plate to make the protrusion disengage from the slide block. At this time, by pulling the inner plate to one side in the slide groove, the structural connection between the inner plate and the slide block is broken. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a cross-sectional structural diagram of the positioning mechanism component of this utility model;

[0019] Figure 3 This is a disassembled structural diagram of the positioning mechanism component of this utility model;

[0020] Figure 4 This is an enlarged structural schematic diagram of the positioning mechanism component of this utility model;

[0021] Figure 5 This is a side sectional view of the positioning mechanism component of this utility model;

[0022] Figure 6 This is a schematic diagram of some components of the positioning mechanism of this utility model;

[0023] Figure 7 This is a schematic diagram of the disassembled structure of the positioning mechanism component of this utility model;

[0024] Figure 8 This is a bottom view of the positioning mechanism component of this utility model;

[0025] In the diagram: 1. Positioning mechanism; 11. Inspection fixture body; 12. Sub-rod; 13. Semicircular block; 14. Biting plate; 15. Mother rod; 16. Slide seat; 17. Tooth plate one; 18. Tooth plate two; 19. Spring; 110. Limiting plate; 111. Inner plate; 112. Spring piece; 113. Protrusion; 114. Telescopic rod; 115. Base support; 116. Slide groove;

[0026] 2. Auxiliary department; 21. Supervisor; 22. Deputy supervisor. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example 1: Please refer to Figure 1-4This utility model provides a technical solution: a quick centering fixture device for workpiece positioning and measurement, including a positioning mechanism 1, an auxiliary mechanism 2 inside the positioning mechanism 1, a fixture body 11, a sub-rod 12 on the inner wall of the fixture body 11, a semi-circular block 13 at one end of the sub-rod 12, one end of the sub-rod 12 being rotatably connected to one side end of the semi-circular block 13, a bite plate 14 on the inner side of the semi-circular block 13, and the inner side of the semi-circular block 13 being rotatably connected to the center of the bite plate 14. The instrument body 11 is connected in a sliding manner. A female rod 15 is located at the top of the male rod 12, and the top of the male rod 12 is rotatably connected to the top of the female rod 15. A slide block 16 is located at the bottom of the female rod 15, and the bottom of the female rod 15 is rotatably connected to the inner wall of the slide block 16. A groove 116 is formed on the top side of the instrument body 11. An inner plate 111 is provided on the inner surface of the groove 116, and the inner surface of the groove 116 is slidably connected to the outer surface of the inner plate 111. A limit plate 110 is provided on the inner side of the inner plate 111, and the inner side of the inner plate 111 is connected to the limit plate. One end of 110 is slidably connected. A spring piece 112 is provided on the bottom side of the limiting plate 110. The bottom side of the limiting plate 110 is fixedly connected to the top end of the spring piece 112. The bottom side of the spring piece 112 is fixedly connected to the inner side of the inner plate 111. A protrusion 113 is provided on the top side of the limiting plate 110. The top side of the limiting plate 110 is fixedly connected to the bottom end of the protrusion 113. The outer side of the protrusion 113 is slidably engaged with the inner wall of one end of the slide block 16. A toothed plate 18 is provided on the top side of the fixture body 11. The top side is fixedly connected to the bottom end of the second toothed plate 18. The inclined surface of the second toothed plate 18 slides in contact with the inclined surface of the first toothed plate 17. The top side of the first toothed plate 17 is fixedly connected to the bottom end of the spring 19. The top end of the spring 19 is fixedly connected to the inside of the slide block 16. A telescopic rod 114 is provided on the bottom side of the fixture body 11. The bottom side of the fixture body 11 is fixedly connected to the top end of the telescopic rod 114. A base support 115 is provided at the bottom end of the telescopic rod 114. The bottom end of the telescopic rod 114 is fixedly connected to the side of the base support 115.

[0029] When using this type of quick-alignment fixture for workpiece positioning and measurement, firstly, a semi-circular block 13 is designed inside the fixture body 11. There are two rows of three semi-circular blocks 13, and all connected components are identical. The semi-circular blocks 13 can slide inside the fixture body 11. Simultaneously, a bite plate 14 is installed on the inner side of the semi-circular block 13. The bite plate 14 has five notches on one side and can rotate at a small angle within the semi-circular block 13. Then, when positioning the workpiece, the workpiece is placed in the middle of the fixture body 11, between the two rows. Since a sub-rod 12 is connected to one end of the side of the semi-circular block 13, and a mother rod 15 is designed at the top of the sub-rod 12, the two are connected by a hinge. When the semicircular block 13 is not moved, the connection between the sub-rod 12 and the mother rod 15 is at an obtuse angle, and one end of the mother rod 15 is connected to the slide block 16. Therefore, by pulling the slide block 16, the sub-rod 12 and the mother rod 15 change. The sub-rod 12 will gradually change from an inclined state to a vertical state. During this process, the semicircular block 13 will slide out from the inside of the fixture body 11, allowing the bite plate 14 to contact the workpiece. When in contact, the bite plate 14 can adjust its posture by adaptive small-angle rotation according to the shape of the workpiece. It uses the five notches on its side to form a multi-point contact bite with the outer contour of the workpiece. With the help of the sliding of the semicircular block 13, the bite plate 14 is moved synchronously, so that the bite plate 14 fits the curved surface or edge of the workpiece and other structural features.

[0030] A second toothed plate 18 is installed on the top side of the fixture body 11. At the same time, a spring 19 is designed inside the slide 16. A first toothed plate 17 is installed at the bottom end of the spring 19. The first toothed plate 17 can move up and down a short distance within the slide 16. When the slide 16 moves, the spring 19 is compressed and released, generating elastic deformation, which drives the first toothed plate 17 to move up and down a short distance within the slide 16. This allows the teeth of the first toothed plate 17 and the second toothed plate 18 to mesh and separate. The elastic force of the spring 19 achieves the engagement and locking of the first toothed plate 17 and the second toothed plate 18. Thus, after the slide 16 moves into place, the toothed plates are used to fix the position of the slide 16.

[0031] A groove 116 is provided on the top side of the fixture body 11. An inner plate 111 is designed on the inner surface of the groove 116. A limit plate 110 is installed on one end of the inner side of the inner plate 111. A protrusion 113 is fixed on the top side of the limit plate 110. A spring piece 112 is designed between the inner plate 111 and the limit plate 110. By inserting the protrusion 113 into the slide block 16, a structural connection is formed between the slide block 16 and the inner plate 111. Thus, when the slide block 16 moves, the protrusion 113 on the limit plate 110 limits its movement. The sliding block 16 is prevented from moving out of its range. The inner plate 111 supports the sliding block 16's movement trajectory, thereby ensuring that the sliding block 16 slides smoothly in the slide groove 116, making it difficult for the toothed plate 17 and toothed plate 18 to easily detach. At the same time, downward pressure is applied to the limiting plate 110, causing the protrusion 113 to detach from the sliding block 16. At this time, by pulling the inner plate 111 to one side in the slide groove 116, the inner plate 111 and the sliding block 16 are disconnected from the structure. In this way, the sliding block 16 can be reset.

[0032] A telescopic rod 114 is designed on the bottom side of the fixture body 11. The bottom end of the telescopic rod 114 is connected to a base 115. When the overall length of the workpiece is short, the retraction of the telescopic rod 114 can move the position where the workpiece is clamped and positioned to the measurement reference area in the middle of the fixture body 11, so that the bite plate 14 can be accurately aligned with the effective measurement part of the workpiece, and avoid the clamping position of the bite plate 14 from shifting due to the workpiece being too short.

[0033] Example 2: Please refer to Figure 1-4 The auxiliary mechanism 2 includes a main tube 21, a secondary tube 22 is provided on the inner side of the bottom end of the main tube 21, the inner side of the bottom end of the main tube 21 is slidably connected to the outer side of the top end of the secondary tube 22, a toothed plate 17 is provided on the bottom end of the secondary tube 22, the bottom end of the secondary tube 22 is fixedly connected to the top side of the toothed plate 17, a spring 19 is provided inside both the secondary tube 22 and the main tube 21, the interior of the secondary tube 22 and the main tube 21 is in contact with the outer side of the spring 19, and the top end of the main tube 21 is fixedly connected to the interior of the slide block 16.

[0034] A main tube 21 and a secondary tube 22 are designed on the outer side of the spring 19. The main tube 21 and the secondary tube 22 are vertically slidingly connected. When the spring 19 undergoes elastic deformation, the vertical sliding connection between the main tube 21 and the secondary tube 22 can guide the spring 19 to extend and retract axially, avoiding radial displacement or twisting of the spring 19 when it is under force. The limiting structure of the main tube 21 and the secondary tube 22 maintains the deformation direction of the spring 19, ensuring that the meshing action of the first tooth plate 17 and the second tooth plate 18 is accurately executed in the vertical direction. At the same time, the sliding cooperation of the two tubes absorbs the lateral force when the spring 19 deforms, enhancing the stability of the spring 19 during operation.

[0035] Please see Figure 1-4By placing the workpiece inside the middle of the fixture body 11 between two rows, a sub-rod 12 is connected to one end of the side of the semicircular block 13. The top of the sub-rod 12 is designed with a mother rod 15, and the two are connected by a hinge. When the semicircular block 13 is not moving, the connection between the sub-rod 12 and the mother rod 15 is at an obtuse angle, and one end of the mother rod 15 is connected to the slide block 16. Therefore, by pulling the slide block 16, the sub-rod 12 and the mother rod 15 change, and the sub-rod 12 gradually changes from an inclined state to a vertical state. During this process, the semicircular block 13 slides out from inside the fixture body 11, allowing the gripper 14 to contact the workpiece and fix it. When the slide block 16 moves, the spring 19 is compressed. The release generates elastic deformation, causing the toothed plate 17 to move up and down a short distance within the slide 16, so that the teeth of the toothed plate 17 and the toothed plate 18 can mesh and separate. The spring force of the spring 19 achieves the engagement and locking of the toothed plate 17 and the toothed plate 18. Thus, after the slide 16 moves into place, the toothed plates engage and fix the position of the slide 16. By inserting the protrusion 113 into the slide 16, the slide 16 is structurally connected to the inner plate 111. Thus, when the slide 16 moves, the protrusion 113 on the limiting plate 110 restricts the range of movement of the slide 16 to prevent it from falling out. The inner plate 111 supports the movement trajectory of the slide 16, thereby ensuring that the slide 16 slides smoothly within the slide groove 116, making it difficult for the toothed plate 17 and the toothed plate 18 to easily separate.

[0036] The main tube 21 and the auxiliary tube 22 are vertically slidingly connected. This allows the spring 19 to extend and retract axially when it undergoes elastic deformation, preventing radial displacement or twisting of the spring 19 under stress. The limiting structure of the main tube 21 and the auxiliary tube 22 maintains the deformation direction of the spring 19, ensuring that the meshing action of the first toothed plate 17 and the second toothed plate 18 deforms precisely in the vertical direction.

[0037] 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 process, method, article, or apparatus.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A quick centering fixture device for workpiece positioning and measurement, characterized in that: The device includes a positioning mechanism (1), an auxiliary mechanism (2) is provided inside the positioning mechanism (1), the positioning mechanism (1) includes a fixture body (11), a sub-rod (12) is provided on the inner wall of the fixture body (11), a semi-circular block (13) is provided at one end of the sub-rod (12), one end of the sub-rod (12) is rotatably connected to one side end of the semi-circular block (13), a bite plate (14) is provided on the inner side of the semi-circular block (13), the inner side of the semi-circular block (13) is rotatably connected to the center of the bite plate (14), a mother rod (15) is provided at the top end of the sub-rod (12), the top end of the sub-rod (12) is rotatably connected to the top end of the mother rod (15), a slide (16) is provided at the bottom end of the mother rod (15), and the bottom end of the mother rod (15) is rotatably connected to the inner wall of the slide (16).

2. The quick centering fixture device for workpiece positioning and measurement according to claim 1, characterized in that: The auxiliary mechanism (2) includes a main tube (21), a secondary tube (22) is provided on the inner side of the bottom end of the main tube (21), the inner side of the bottom end of the main tube (21) is slidably connected to the outer side of the top end of the secondary tube (22), a toothed plate (17) is provided on the bottom end of the secondary tube (22), and the bottom end of the secondary tube (22) is fixedly connected to the top side of the toothed plate (17).

3. The quick centering fixture device for workpiece positioning and measurement according to claim 2, characterized in that: Both the secondary tube (22) and the main tube (21) are equipped with springs (19), and the interiors of the secondary tube (22) and the main tube (21) are in contact with the outside of the springs (19). The top end of the main tube (21) is fixedly connected to the interior of the slide (16).

4. The quick centering fixture device for workpiece positioning and measurement according to claim 1, characterized in that: The top side of the inspection fixture body (11) is provided with a sliding groove (116), and an inner plate (111) is provided on the inner surface of the sliding groove (116). The inner surface of the sliding groove (116) is slidably connected to the outer side of the inner plate (111). A limiting plate (110) is provided on the inner side of the inner plate (111), and the inner side of the inner plate (111) is slidably connected to one end of the limiting plate (110).

5. The quick centering fixture device for workpiece positioning and measurement according to claim 4, characterized in that: The bottom side of the limiting plate (110) is provided with a spring piece (112), the bottom side of the limiting plate (110) is fixedly connected to the top end of the spring piece (112), the bottom side of the spring piece (112) is fixedly connected to the inner side of the inner plate (111), the top side of the limiting plate (110) is provided with a protrusion (113), the top side of the limiting plate (110) is fixedly connected to the bottom end of the protrusion (113), and the outer side of the protrusion (113) is slidably engaged with the inner wall of one end of the slide block (16).

6. The quick centering fixture device for workpiece positioning and measurement according to claim 5, characterized in that: The top side of the inspection fixture body (11) is provided with a second toothed plate (18), the top side of the inspection fixture body (11) is fixedly connected to the bottom end of the second toothed plate (18), and the inclined surface of the second toothed plate (18) slides in contact with the inclined surface of the first toothed plate (17).

7. The quick centering fixture device for workpiece positioning and measurement according to claim 6, characterized in that: The top side of the toothed plate (17) is fixedly connected to the bottom end of the spring (19), and the top end of the spring (19) is fixedly connected to the inside of the slide (16).

8. The quick centering fixture device for workpiece positioning and measurement according to claim 7, characterized in that: The bottom side of the inspection tool body (11) is provided with a telescopic rod (114), the bottom side of the inspection tool body (11) is fixedly connected to the top end of the telescopic rod (114), the bottom end of the telescopic rod (114) is provided with a base support (115), and the bottom end of the telescopic rod (114) is fixedly connected to the side of the base support (115).

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