A composite angle sinusoidal platform for grinding machines
By designing a compound angle sinusoidal platform for grinding machines, the problem of traditional sinusoidal platforms being unable to rotate laterally has been solved, enabling rapid switching of rotation direction and precise measurement, thereby improving processing efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIANYOU MACHINERY (DALIAN) CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-03
AI Technical Summary
Traditional sinusoidal platforms cannot perform precise lateral rotation, resulting in cumbersome and inefficient operation during compound angle machining, and easily introducing cumulative errors that affect machining accuracy.
A composite angle sinusoidal platform for grinding machines was designed, comprising a base and a magnetic platform. The magnetic platform has a V-groove at the bottom for mounting a sine column. The base has a circular hole and a locking element, allowing for precise forward and lateral rotation, and reducing errors through the locking element and clearance fit.
It enables rapid switching of the positive rotation direction, improves measurement efficiency and accuracy, reduces measurement errors, and is suitable for precision measurement.
Smart Images

Figure CN224445542U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grinding technology, and in particular to a composite angle sine platform for grinding machines. Background Technology
[0002] A compound angle sine platform is a precision device that achieves angle adjustment based on the sine principle. It is widely used in the field of high-precision grinding. Although traditional sine platforms can achieve angle adjustment in a single direction, they cannot perform precise lateral rotation due to their structural limitations. When compound angle machining is required, it can only be achieved through multiple manual adjustments, which is not only cumbersome and inefficient, but also prone to cumulative errors due to multiple clamping and adjustment, which seriously affects machining accuracy and efficiency. Utility Model Content
[0003] To address the shortcomings of existing technologies, this invention provides a composite angle sinusoidal platform for grinding machines, which solves the technical problems mentioned in the background section.
[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a composite angle sinusoidal platform for a grinding machine, comprising a base and a magnetic platform. The bottom of the magnetic platform is provided with two V-shaped grooves, and a first positive spiral column and a second positive spiral column are fixedly installed in the two V-shaped grooves respectively. The base is provided with a circular hole for the first positive spiral column to rotate, and a locking component is provided on the first positive spiral column. Side spiral columns can be detachably installed at the four corners of the base, and a backing plate can be detachably installed on the side of the magnetic platform.
[0005] Furthermore, the locking component includes two locking buckles respectively fixedly disposed at both ends of the first positive rotating column, and a locking bolt is installed inside the locking buckle, with one end of the locking bolt extending into the first positive rotating column.
[0006] Furthermore, the threads on the outer surfaces of the two locking bolts rotate in opposite directions.
[0007] Furthermore, the distance between the two V-grooves is L, where L = K × 5mm, and K is a positive integer greater than 1.
[0008] Furthermore, the angle of the V-groove is 120°, and both the first and second positive spiral columns have gaps with the inner top wall of the V-groove.
[0009] Furthermore, the magnetic platform is fitted with the base with a clearance fit, and the first sine column is fitted with the circular hole with a clearance fit.
[0010] By employing the above technical solution, this utility model provides a composite angle sinusoidal platform for grinding machines, which has at least the following beneficial effects:
[0011] 1. This utility model, by setting a positive rotation column and a detachable side rotation column and a backing plate, enables the magnetic platform to not only rotate in the positive direction but also rotate in the side. When processing or measuring compound angles, the positive rotation direction can be quickly switched, making it convenient to use and highly efficient in measurement.
[0012] 2. By setting a locking component and limiting the clearance fit between the magnetic platform and the base, and the clearance fit between the first positive rotating column and the circular hole, this utility model can reduce measurement errors, ensure the stability of the magnetic platform and the base, improve measurement accuracy, and is suitable for precision measurement. Attached Figure Description
[0013] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0014] Figure 1 This is one of the overall structural schematic diagrams of this utility model;
[0015] Figure 2 This is the second schematic diagram of the overall structure of this utility model;
[0016] Figure 3 This is a schematic diagram of the locking buckle structure of this utility model;
[0017] Figure 4 This is a sectional view of the base of this utility model;
[0018] Figure 5 This is a measurement schematic diagram of the present invention.
[0019] In the diagram: 1. Base; 2. Magnetic platform; 3. V-groove; 41. First positive rotation column; 42. Second positive rotation column; 5. Locking element; 51. Locking buckle; 52. Locking bolt; 6. Side rotation column; 7. Backing plate. Detailed Implementation
[0020] 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.
[0021] A compound angle sine platform is a precision device that achieves angle adjustment based on the sine principle. It is widely used in the field of high-precision grinding. Although traditional sine platforms can achieve angle adjustment in a single direction, they cannot perform precise lateral rotation due to their structural limitations. When compound angle machining is required, it can only be achieved through multiple manual adjustments, which is not only cumbersome and inefficient, but also prone to cumulative errors due to multiple clamping and adjustment, which seriously affects machining accuracy and efficiency.
[0022] To address the shortcomings of the aforementioned sine wave platform during use, please refer to [link / reference needed]. Figures 1-5 The present invention provides a composite angle sine platform for grinding machines, which can not only perform precise forward rotation, but also precise lateral rotation. The composite angle sine platform uses a base 1 and a magnetic platform 2 as its foundation. The parallelism tolerance between the base 1 and the magnetic platform 2 is less than 0.003 mm, and the perpendicularity tolerance is less than 0.003 mm, allowing for a more precise fit. The bottom of the magnetic platform 2 has two V-shaped grooves 3, in which a first sine column 41 and a second sine column 42 are fixedly installed respectively. The edges of the first sine column 41 and the second sine column 42 are in contact with the inner walls of the V-shaped grooves 3. The base 1 has a circular hole for the first sine column 41 to rotate. The parallelism tolerance between the axis of the first sine column 41 and the base 1 is 0.003 mm, which ensures a precise fit between the first sine column 41 and the base 1 and reduces errors. The first sine column 41 is equipped with a locking element 5. Side sine columns 6 can be detachably installed at the four corners of the base 1, and a backing plate 7 can be detachably installed on the side of the magnetic platform 2. When a forward rotation angle is required, first place the magnetic platform 2 on the worktable and clean the contact surface. Align the length and width of the base 1 with the X and Y axes of the machine tool, respectively. After calculating the dimensions according to the sine formula, insert gauge blocks of appropriate specifications. The gauge blocks should fit tightly against the base 1 and the first forward rotation column 41, and then lock them in place using the locking device 5. At this point, the angle formed between the table surface of the magnetic platform 2 and the bottom surface of the base 1 is the required angle. When a side rotation angle is required, install the side rotation column 6 on the machining surface that requires side rotation and align the backing plate 7. The X and Y axes of the machine tool are parallel. Similarly, after calculating the dimensions according to the sine formula, gauge blocks of appropriate specifications are inserted. It should be noted that when inserting gauge blocks, one side-rotating column 6 needs to be in close contact with the backing plate 7, and the other side-rotating column 6 needs to be in close contact with both the gauge block and the backing plate 7. At this time, the side-rotating angle of the magnetic platform 2 is the required angle. In this way, the platform can not only perform precise forward rotation, but also precise side rotation. When machining or measuring compound angles, the direction of rotation can be quickly switched, which is convenient to use and has high measurement efficiency.
[0023] To facilitate the locking operation, two locking buckles 51 are fixedly installed at both ends of the first rotating column 41. Locking bolts 52 are installed inside the locking buckles 51, with one end of the locking bolts 52 extending into the first rotating column 41. The locking surface of the locking buckle 51 is conical, and the side of the locking buckle 51 closest to the base 1 contacts the base 1, while the other sides of the locking buckle 51 do not contact the base 1 or the first rotating column 41. This ensures the direct transmission of locking force and avoids precision loss caused by unnecessary friction. Combined with the above-mentioned 0.003mm parallelism requirement, it can reduce measurement error. The threads on the outer surfaces of the two locking bolts 52 have opposite directions. When locking, one locking bolt 52 rotates clockwise and the other locking bolt 52 rotates counterclockwise, so that symmetrical locking force can be applied simultaneously.
[0024] More specifically, the distance between the two V-grooves 3 is L, where L = K × 5mm, and K is a positive integer greater than 1, which makes it easier to calculate the distance between the two V-grooves.
[0025] The angle of the V-groove 3 is 120°. Both the first positive spiral column 41 and the second positive spiral column 42 have gaps with the inner top wall of the V-groove 3. The inner wall of the V-groove 3 can form two linear contact edges with the positive spiral column, which can correct the positive spiral column to be in the center position of the V-groove 3 and avoid skewing.
[0026] The magnetic platform 2 is fitted with the base 1 with a clearance, and the first rotating column 41 is fitted with the round hole with a clearance. The clearance between the magnetic platform 2 and the base 1 is controlled within the range of 0-0.005mm, and the clearance between the rotating column 3 and the round hole is controlled within the range of 0-0.003mm. This improves the motion accuracy of each component and can effectively reduce measurement errors.
[0027] 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.
[0028] 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, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A compound angle sine platform for a grinder, characterized by: The magnetic platform (2) includes a base (1) and a magnetic platform (2). The bottom of the magnetic platform (2) is provided with two V-shaped grooves (3). A first positive rotating column (41) and a second positive rotating column (42) are fixedly installed in the two V-shaped grooves (3). The base (1) is provided with a round hole for the first positive rotating column (41) to rotate. A locking part (5) is provided on the first positive rotating column (41). Side rotating columns (6) can be detachably installed at the four corners of the base (1). A backing plate (7) can be detachably installed on the side of the magnetic platform (2).
2. The composite angle sinusoidal platform for a grinding machine according to claim 1, characterized in that: The locking component (5) includes two locking buckles (51) that are respectively fixed at both ends of the first positive rotating column (41). The locking buckles (51) are equipped with locking bolts (52), and one end of the locking bolts (52) extends into the first positive rotating column (41).
3. The composite angle sinusoidal platform for a grinding machine according to claim 2, characterized in that: The threads on the outer surfaces of the two locking bolts (52) are turned in opposite directions.
4. The composite angle sinusoidal platform for a grinding machine according to claim 1, characterized in that: The distance between the two V-grooves (3) is L, where L = K × 5mm and K is a positive integer greater than 1.
5. The composite angle sinusoidal platform for a grinding machine according to claim 1, characterized in that: The angle of the V-groove (3) is 120°, and there is a gap between the first positive spiral column (41) and the second positive spiral column (42) and the inner top wall of the V-groove (3).
6. The composite angle sinusoidal platform for a grinding machine according to claim 1, characterized in that: The magnetic platform (2) is fitted with the base (1) with a clearance, and the first positive spiral column (41) is fitted with the circular hole with a clearance.