Universal floating fixture

Abstract

The present invention provides a universal floating fixture, which includes a base, a fixed table arranged above the base, a middle adjustment table arranged above the fixed table, a lower hemispherical cover arranged above the middle adjustment table, and an upper hemispherical cover arranged above the lower hemispherical cover; it also includes a main fixing rod passing through the upper hemispherical cover, the lower hemispherical cover, the middle adjustment table, the fixed table and the base. An upper fixing nut is sleeved on the top of the main fixing rod. Upper limit holes for passing through the main fixing rod are provided on both the upper hemispherical cover and the lower hemispherical cover. An adjustment through hole for passing through the main fixing rod is provided on the middle adjustment table. A lower limit hole for the main fixing rod is provided on the fixed table; this universal floating fixture can achieve fine shaking of parts in the horizontal and vertical directions, and can enable the parts to shake inside the spherical groove by using the structure of the positioning sphere to meet the requirements during the processing.

Description

Technical Field

[0001] The present invention specifically relates to a universal floating fixture. Background Art

[0002] When honing a high-precision inner hole, the traditional method only uses a fixture that can move in the X / Y axis directions, and the part is in a fixed state after being clamped. Since the part cannot float arbitrarily in all 360-degree directions and the main shaft can only move up and down in the Z axis direction, the traditional fixture cannot ensure that the axis line of the part coincides with the center of the main shaft during honing, and thus cannot meet the requirements for the cylindricity and position accuracy of the part.

[0003] In summary, a universal floating fixture is proposed to solve this problem. Summary of the Invention

[0004] The object of the present invention is to provide a universal floating fixture for the deficiencies of the prior art, which can well solve the above problems.

[0005] To meet the above requirements, the technical solution adopted by the present invention is: to provide a universal floating fixture, which includes a base, a fixed table arranged above the base, a middle adjustment table arranged above the fixed table, a lower hemispherical cover arranged above the middle adjustment table, and an upper hemispherical cover arranged above the lower hemispherical cover; it also includes a main fixing rod passing through the upper hemispherical cover, the lower hemispherical cover, the middle adjustment table, the fixed table and the base. An upper fixing nut is sleeved on the top of the main fixing rod. Upper limiting holes for passing through the main fixing rod are provided on both the upper hemispherical cover and the lower hemispherical cover. An adjustment through hole for passing through the main fixing rod is provided on the middle adjustment table. A lower limiting hole for the main fixing rod is provided on the fixed table; a lower adjustment spring is sleeved on the bottom of the main fixing rod, the top of the lower adjustment spring is connected to the side wall of the top of the lower limiting hole, a fixing ring is sleeved on the bottom of the main fixing rod, the fixing ring is located below the lower adjustment spring, and at least four positioning grooves are provided on the side end face of the bottom of the main fixing rod; an inner insertion rod for inserting into the positioning groove is provided on the inner end face of the fixing ring, a side handle is provided on the outside of the fixing ring, a bottom adjustment groove for passing through the main fixing rod is provided on the base, a middle adjustment groove is provided on the bottom of the middle adjustment table, an external thread is provided on the main fixing rod, a middle nut sleeved on the external thread of the main fixing rod is provided inside the middle adjustment groove, an upper adjustment spring is provided on the top of the middle nut, the upper adjustment spring is sleeved on the outside of the main fixing rod, and the top of the upper adjustment spring is connected to the inner top end face of the middle adjustment groove; spherical grooves for accommodating positioning spheres are provided inside the upper hemispherical cover and the lower hemispherical cover, and the bottom of the spherical groove is connected to the side wall of the spherical groove inside the lower hemispherical cover through a side adjustment spring; positioning grooves for inserting parts are provided on the positioning sphere, and positioning components are provided inside the positioning grooves. The positioning components include side limiting grooves provided inside the positioning sphere, limiting springs are provided inside the side limiting grooves, one end of the limiting spring is connected to the inner end face of the side limiting groove, and the other end of the limiting spring is connected with a hemispherical limiting protrusion.

[0006] The advantages of this universal floating fixture are as follows:

[0007] This universal floating fixture can achieve slight shaking of the part in the horizontal and vertical directions, and can make the part shake inside the spherical groove by using the structure of the positioning sphere to meet the requirements during the processing. Description of the Drawings

[0008] The drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The same reference numerals are used to represent the same or similar parts in these drawings. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0009] Figure 1 Schematically shows a structural schematic diagram of a universal floating fixture according to an embodiment of the present application.

[0010] Figure 2 Schematically shows a structural schematic diagram at the positioning component of a universal floating fixture according to an embodiment of the present application.

[0011] Figure 3 Schematically shows a structural schematic diagram at the fixing ring of a universal floating fixture according to an embodiment of the present application.

[0012] Wherein: 1, part; 2, positioning sphere; 3, spherical groove; 4, upper fixing nut; 5, main fixing rod; 6, upper limit hole; 7, upper hemispherical cover; 8, lower hemispherical cover; 9, positioning groove; 10, positioning component; 11, side adjusting spring; 12, lower limit groove; 13, lower limit protrusion; 14, middle adjusting platform; 15, upper adjusting spring; 16, middle adjusting groove; 17, middle nut; 18, lower limit hole; 19, lower adjusting spring; 20, side handle; 21, bottom adjusting groove; 22, positioning groove; 23, bottom connecting rod; 24, fixing ring; 25, inner inserting rod; 26, side limit groove; 27, limit spring; 28, hemispherical limit protrusion; 29, side limit groove; 30, fixing platform; 31, base. Detailed implementation manners

[0013] To make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0014] In the following description, references to "an embodiment", "embodiment", "an example", "example", etc. indicate that the described embodiment or example may include specific features, structures, characteristics, properties, elements or limits, but not every embodiment or example necessarily includes specific features, structures, characteristics, properties, elements or limits. Additionally, repeated use of the phrase "according to an embodiment of the present application" although possibly referring to the same embodiment, does not necessarily refer to the same embodiment.

[0015] For simplicity, some technical features well-known to those skilled in the art are omitted in the following description.

[0016] According to an embodiment of the present application, a universal floating fixture is provided, as Figures 1 - 3As shown, it includes a base 31, a fixed table 30 arranged above the base 31, a middle adjustment table 14 arranged above the fixed table 30, a lower hemisphere cover 8 arranged above the middle adjustment table 14, and an upper hemisphere cover 7 arranged above the lower hemisphere cover 8; it also includes a main fixing rod 5 passing through the upper hemisphere cover 7, the lower hemisphere cover 8, the middle adjustment table 14, the fixed table 30 and the base 31. An upper fixing nut 4 is sleeved on the top of the main fixing rod 5. Upper limit holes 6 for passing through the main fixing rod 5 are provided on both the upper hemisphere cover 7 and the lower hemisphere cover 8. An adjustment through hole for passing through the main fixing rod 5 is provided on the middle adjustment table 14. A lower limit hole 18 for the main fixing rod 5 is provided on the fixed table 30.

[0017] According to an embodiment of the present application, a lower adjustment spring 19 is sleeved on the bottom of the main fixing rod 5 of the universal floating fixture. The top of the lower adjustment spring 19 is connected to the side wall at the top of the lower limit hole 18. A fixing ring 24 is sleeved on the bottom of the main fixing rod 5. The fixing ring 24 is located below the lower adjustment spring 19. At least four positioning grooves 22 are provided on the side end face at the bottom of the main fixing rod 5.

[0018] According to an embodiment of the present application, an inner insertion rod 25 for inserting into the positioning groove 22 is provided on the inner end face of the fixing ring 24 of the universal floating fixture. A side handle 20 is provided on the outside of the fixing ring 24. A bottom adjustment groove 21 for passing through the bottom of the main fixing rod 5 is provided on the base 31. A middle adjustment groove 16 is provided at the bottom of the middle adjustment table 14. External threads are provided on the main fixing rod 5. A middle nut 17 sleeved on the external threads of the main fixing rod 5 is provided inside the middle adjustment groove 16. An upper adjustment spring 15 is provided on the top of the middle nut 17. The upper adjustment spring 15 is sleeved on the outside of the main fixing rod 5. The top of the upper adjustment spring 15 is connected to the inner top end face of the middle adjustment groove 16.

[0019] According to an embodiment of the present application, spherical grooves 3 for accommodating positioning spheres 2 are provided inside the upper hemisphere cover 7 and the lower hemisphere cover 8 of the universal floating fixture. The bottom of the spherical groove 3 is connected to the side wall of the spherical groove 3 inside the lower hemisphere cover 8 through a side adjustment spring 11.

[0020] According to an embodiment of the present application, a positioning groove 9 for inserting a part 1 is provided on the positioning sphere 2 of the universal floating fixture. A positioning component 10 is provided inside the positioning groove 9. The positioning component 10 includes a side limit groove 26 provided inside the positioning sphere 2. A limit spring 27 is provided inside the side limit groove 26. One end of the limit spring 27 is connected to the inner end face of the side limit groove 26. The other end of the limit spring 27 is connected with a hemispherical limit protrusion 28.

[0021] According to an embodiment of the present application, the top of the main fixing rod 5 of the universal floating fixture is provided with a thread.

[0022] According to an embodiment of the present application, the fixing ring 24 of the universal floating fixture is stuck below the lower adjusting spring 19.

[0023] According to an embodiment of the present application, the bottom of the main fixing rod 5 of the universal floating fixture is connected to the side wall of the bottom adjusting groove 21 through the bottom connecting rod 23.

[0024] According to an embodiment of the present application, the bottom end face of the lower hemisphere cover 8 of the universal floating fixture is provided with a lower limit groove 12, the top of the middle adjusting table 14 is provided with a lower limit protrusion 13 inserted into the lower limit groove 12, and the gap between the lower limit protrusion 13 and the lower limit groove 12 is 0.5 mm.

[0025] According to an embodiment of the present application, the gap between the lower adjusting spring 19 and the lower limit hole 18 of the universal floating fixture is 0.5 mm, the gap between the main fixing rod 5 and the upper limit hole 6 is 0.5 mm, and the gap between the main fixing rod 5 and the adjusting through hole on the middle adjusting table 14 is 0.5 mm.

[0026] According to an embodiment of the present application, the side end face of the part 1 of the universal floating fixture is provided with a side limit groove 29 for inserting the hemispherical limit protrusion 28.

[0027] According to an embodiment of the present application, when the universal floating fixture is used, the part 1 can be inserted into the positioning groove 9 from the top of the positioning sphere 2, and the part 1 can be fixed by inserting the hemispherical limit protrusion 28 into the side limit groove 29. When in use, the positioning sphere 2 can shake in the spherical groove 3, and the side adjusting spring 11 can make the positioning sphere 2 reset after shaking. At the same time, there is a 0.5 mm gap between the main fixing rod 5 and the lower adjusting spring 19 and the through holes they pass through. In this way, a slight lateral shake of the part 1 during processing can be realized. At the same time, the setting of the lower adjusting spring 19 and the upper adjusting spring 15 can realize the slight longitudinal movement of the positioning sphere 2 and the part 1 and can automatically reset, and by inserting the inner inserting rod 25 into different positioning grooves 22, the reset elasticity of the lower adjusting spring 19 can be adjusted.

[0028] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the claims.

Claims

1. A universal floating fixture, characterized in that: It includes a base, a fixed table arranged above the base, a middle adjustment table arranged above the fixed table, a lower hemisphere cover arranged above the middle adjustment table, and an upper hemisphere cover arranged above the lower hemisphere cover; It further includes a main fixing rod passing through the upper hemisphere cover, the lower hemisphere cover, the middle adjustment table, the fixed table and the base. An upper fixing nut is sleeved on the top of the main fixing rod. Upper limit holes for passing through the main fixing rod are provided on both the upper hemisphere cover and the lower hemisphere cover. An adjustment through hole for passing through the main fixing rod is provided on the middle adjustment table. A lower limit hole for the main fixing rod is provided on the fixed table; A lower adjustment spring is sleeved on the bottom of the main fixing rod. The top of the lower adjustment spring is connected to the side wall of the top of the lower limit hole. A fixing ring is sleeved on the bottom of the main fixing rod. The fixing ring is located below the lower adjustment spring. At least four positioning grooves are provided on the side end face of the bottom of the main fixing rod; Inner insertion rods for inserting into the positioning grooves are provided on the inner end face of the fixing ring. A side handle is provided on the outside of the fixing ring. A bottom adjustment groove for passing through the main fixing rod is provided on the base. A middle adjustment groove is provided at the bottom of the middle adjustment table. External threads are provided on the main fixing rod. A middle nut sleeved on the external threads of the main fixing rod is provided inside the middle adjustment groove. An upper adjustment spring is provided on the top of the middle nut. The upper adjustment spring is sleeved on the outside of the main fixing rod. The top of the upper adjustment spring is connected to the inner top end face of the middle adjustment groove; Spherical grooves for containing positioning spheres are provided inside the upper hemisphere cover and the lower hemisphere cover. The bottom of the positioning sphere is connected to the side wall of the spherical groove inside the lower hemisphere cover through a side adjustment spring; Positioning grooves for inserting parts are provided on the positioning sphere. Positioning components are provided inside the positioning grooves. The positioning components include side limit grooves provided inside the positioning sphere. Limit springs are provided inside the side limit grooves. One end of the limit spring is connected to the inner end face of the side limit groove. The other end of the limit spring is connected with a hemispherical limit protrusion; 2. The universal floating fixture according to claim 1, characterized in that: Threads are provided on the top of the main fixing rod.

3. The universal floating fixture according to claim 1, characterized in that: The fixing ring is stuck below the lower adjustment spring.

4. The universal floating fixture according to claim 1, characterized in that: The bottom of the main fixing rod is connected to the side wall of the bottom adjustment groove through a bottom connecting rod.

5. The universal floating fixture according to claim 1, characterized in that: A lower limit groove is provided on the bottom end face of the lower hemisphere cover. A lower limit protrusion inserted into the lower limit groove is provided on the top of the middle adjustment table. The gap between the lower limit protrusion and the lower limit groove is 0.5 mm.

6. The universal floating fixture according to claim 1, characterized in that: The gap between the lower adjustment spring and the lower limit hole is 0.5 mm. The gap between the main fixing rod and the upper limit hole is 0.5 mm. The gap between the main fixing rod and the adjustment through hole on the middle adjustment table is 0.5 mm.

7. The universal floating fixture according to claim 1, characterized in that: Side limit grooves for inserting the hemispherical limit protrusions are provided on the side end face of the part.

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