Angle positioning and grinding tool for circular ring part

Abstract

The utility model discloses an angle positioning and grinding tool for circular ring parts, and relates to the technical field of part machining. The annular part angle positioning and grinding tool comprises a base and a centering indexing rotating shaft, a first center seat and a second center seat are arranged on the side of the upper surface of the base, a guide positioning seat is arranged on the upper surface of the base, a fixed center is fixedly connected to the interior of the first center seat, and a first air cylinder is fixedly connected to the outer surface of the second center seat; the output end of the first air cylinder is provided with a jacking tip, the outer surface of the guide positioning seat is fixedly connected with a second air cylinder, the output end of the second air cylinder is provided with a positioning wedge block, the side of the outer surface of the centering indexing rotating shaft is in threaded connection with a locking nut, and the outer surface of the centering indexing rotating shaft is provided with a centering expansion sleeve. The milling machine tool can be used for grinding one or more planes on the outer circle of the circular ring part and milling one or more key grooves on the outer circle of the circular ring part, and the machining precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of parts processing technology, specifically to a grinding fixture for angular positioning of circular parts. Background Technology

[0002] Machining different workpieces requires different processing techniques and equipment, as well as various tooling. Positioning grinding fixtures are tools used in machining processes to determine the workpiece's position and perform grinding. Their main function is to ensure the workpiece's position is fixed during grinding, thereby guaranteeing machining accuracy and repeatability, and improving machining efficiency and quality. However, existing positioning grinding fixtures, when machining ring parts, suffer from clamping errors, making it difficult to guarantee the parallelism and perpendicularity accuracy of the parts. This can easily lead to significant errors, affecting the machining accuracy of the ring parts. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an angle positioning grinding fixture for circular parts, thereby solving the existing problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a grinding fixture for angular positioning of annular parts, comprising a base and a centering and indexing rotary shaft. A first center seat and a second center seat are provided on the side of the upper surface of the base. A guide positioning seat is provided on the upper surface of the base. A fixed center is fixedly connected inside the first center seat. A first cylinder is fixedly connected to the outer surface of the second center seat. A clamping center is provided at the output end of the first cylinder. A second cylinder is fixedly connected to the outer surface of the guide positioning seat. A positioning wedge is provided at the output end of the second cylinder. A locking nut is threadedly connected to the side of the outer surface of the centering and indexing rotary shaft. A centering expansion sleeve is provided on the outer surface of the centering and indexing rotary shaft.

[0005] Preferably, the first and second center seats are disposed opposite each other on the upper surface of the base, and the outer surface of the clamping center is fitted into the through hole inside the second center seat.

[0006] Preferably, the two ends of the centering and indexing rotary shaft are respectively provided with a first centering hole and a second centering hole, the inner surface of the first centering hole is pressed and adapted to the end of the fixed center, and the inner surface of the second centering hole is pressed and adapted to the end of the clamping center.

[0007] Preferably, the outer surface of the centering and indexing rotary shaft is provided with a toothed groove, and the inner surface of the toothed groove is pressed and adapted to the outer surface of the positioning wedge.

[0008] Preferably, the inner surface of the centering expansion sleeve is adapted to the outer surface of the centering indexing rotation shaft, and the end face of the locking nut is in contact with the end face of the centering expansion sleeve.

[0009] Preferably, the guide positioning seat has an irregularly shaped hole inside, and the inner surface of the irregularly shaped hole is fitted and adapted to the outer surface of the positioning wedge.

[0010] Beneficial effects

[0011] This utility model provides a grinding fixture for angular positioning of circular ring parts. It has the following beneficial effects:

[0012] (1) The grinding fixture for angular positioning of the ring part, through the cooperation between the centering and indexing rotating shaft, the centering expansion sleeve, the locking nut, the fixed center, the tightening center, the positioning wedge and the guide positioning seat, firstly uses the centering expansion sleeve and the locking nut to fit and tighten the center hole of the circular workpiece on the centering and indexing rotating shaft, which plays a role in centering and fixing the rotational freedom, ensuring the perpendicularity of the plane to be processed to the end face of the workpiece. Then, the fixed center and the tightening center are used to loosen and tighten the centering and indexing rotating shaft, realize positioning and clamping, and further restrict the workpiece's freedom. At the same time, the tooth groove on the centering and indexing rotating shaft fits tightly with the wedge-shaped structure at the front end of the positioning wedge. The second cylinder drives the positioning wedge to move along the irregular hole, which can realize the positioning of the rotation angle of the centering and indexing rotating shaft, thereby achieving the purpose of precise positioning.

[0013] (2) The circular ring part angle positioning grinding fixture, through the centering indexing rotating shaft, positioning wedge, centering indexing rotating shaft, centering expansion sleeve, locking nut, fixing center and tightening center, this utility model can be used for grinding one or more planes on the outer circle of the circular ring part, and milling one or more keyways on the outer circle of the circular ring part, which improves the parallel accuracy between the machining plane and the center line of the circular ring, and also improves the perpendicular accuracy between the machining plane and the end face of the circular ring. Attached Figure Description

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic planar view of the overall main structure of this utility model;

[0016] Figure 3 This is a top view of the overall planar structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the centering and indexing rotary shaft of this utility model;

[0018] Figure 5 This is a side sectional view of the centering and indexing rotary shaft of this utility model.

[0019] Figure 6 This is a schematic diagram of the structure of the guide positioning seat of this utility model.

[0020] In the diagram: 1. Base; 2. First center seat; 3. Fixed center; 4. Centering and indexing rotary shaft; 5. Locking nut; 6. Centering expansion sleeve; 7. Tightening center; 8. Guide positioning seat; 9. Positioning wedge; 10. First centering hole; 11. Second centering hole; 12. First cylinder; 13. Second cylinder; 14. Gear groove; 15. Irregular hole; 16. Second center seat. Detailed Implementation

[0021] 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.

[0022] Example 1:

[0023] like Figure 1-6 As shown, this utility model provides a grinding fixture for angular positioning of a ring part, including a base 1 and a centering and indexing rotary shaft 4. A first center seat 2 and a second center seat 16 are provided on the side of the upper surface of the base 1. A guide positioning seat 8 is provided on the upper surface of the base 1. A fixed center 3 is fixedly connected inside the first center seat 2. A first cylinder 12 is fixedly connected to the outer surface of the second center seat 16. A clamping center 7 is provided at the output end of the first cylinder 12. A second cylinder 13 is fixedly connected to the outer surface of the guide positioning seat 8. A positioning wedge 9 is provided at the output end of the second cylinder 13. A locking nut 5 is threadedly connected to the side of the outer surface of the centering and indexing rotary shaft 4. A centering expansion sleeve 6 is provided on the outer surface of the centering and indexing rotary shaft 4.

[0024] Specifically, the first tip seat 2 and the second tip seat 16 are disposed opposite each other on the upper surface of the base 1, and the outer surface of the tip 7 is fitted into the through hole inside the second tip seat 16.

[0025] Specifically, the two ends of the centering and indexing rotary shaft 4 are respectively provided with a first centering hole 10 and a second centering hole 11. The inner surface of the first centering hole 10 is pressed and adapted to the end of the fixed tip 3, and the inner surface of the second centering hole 11 is pressed and adapted to the end of the clamping tip 7.

[0026] Specifically, the outer surface of the centering and indexing rotary shaft 4 is provided with a toothed groove 14, and the inner surface of the toothed groove 14 is pressed and adapted to the outer surface of the positioning wedge block 9.

[0027] Specifically, the inner surface of the centering expansion sleeve 6 is adapted to the outer surface of the centering indexing rotation shaft 4, and the end face of the locking nut 5 is in contact with the end face of the centering expansion sleeve 6.

[0028] Specifically, the guide positioning seat 8 has an irregular hole 15 inside. The inner surface of the irregular hole 15 is fitted and adapted to the outer surface of the positioning wedge 9. The irregular hole 15 cooperates with the positioning wedge 9 to support the positioning wedge 9. The irregular hole 15 guides the positioning wedge 9 to move, so as to realize the wedge structure at the front end of the positioning wedge 9 and the centering and indexing rotation axis 4 indexing.

[0029] The working principle and beneficial effects of the above embodiments.

[0030] In use, the bottom surface of the base 1 is positioned on the machine tool worktable, and the center of the circular workpiece is positioned on the centering and indexing rotary shaft 4. The middle part of the centering and indexing rotary shaft 4 has a conical structure, on which a centering expansion sleeve 6 is fitted. The inner circle of the centering expansion sleeve 6 has a conical structure, which matches the conical structure of the centering and indexing rotary shaft 4. The two fit tightly together. One end of the centering and indexing rotary shaft 4 is threaded, and the thread matches the locking nut 5. By locking and rotating the locking nut 5, its end face fits against the end face of the centering expansion sleeve 6, pushing the centering expansion sleeve 6 to expand on the centering and indexing rotary shaft 4, thus tightening and fitting the center hole of the workpiece. This achieves centering and fixes the rotational freedom, ensuring the perpendicularity of the plane to be processed to the end face of the workpiece, and achieving precise positioning. The two ends of the centering and indexing rotary shaft 4 are respectively provided with a first centering hole 10 and a second centering hole 11 that match the fixed center 3 and the tightening center 7. The centering hole 10 and the second centering hole 11 are tightly fitted with the fixed center 3 and the clamping center 7. The fixed center 3 is fixed and does not need to rotate or move. The clamping center 7 can move horizontally with the cooperation of the first cylinder 12 to release and clamp the centering and indexing rotating shaft 4, thereby achieving positioning and clamping, and further restricting the workpiece's degree of freedom. The first cylinder 12 is responsible for moving the clamping center 7 to achieve the positioning of the centering and indexing rotating shaft 4. When the first cylinder 12 is released, the centering and indexing rotating shaft 4 is removed together with the workpiece. When the first cylinder 12 is clamped, it achieves rapid positioning. The other end of the centering and indexing rotating shaft 4 is provided with a toothed groove 14. The number and angle of the toothed groove 14 can be set as needed. The toothed groove 14 is tightly fitted with the wedge-shaped structure at the front end of the positioning wedge block 9. The second cylinder 13 drives the positioning wedge block 9 to move along the irregular hole 15 to achieve the positioning of the rotation angle of the centering and indexing rotating shaft 4.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] 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 grinding fixture for angular positioning of a circular ring part, comprising a base (1) and a centering and indexing rotary shaft (4), characterized in that: The base (1) has a first center seat (2) and a second center seat (16) on the side of its upper surface. The base (1) has a guide positioning seat (8) on its upper surface. The first center seat (2) has a fixed center (3) inside it. The second center seat (16) has a fixed cylinder (12) on its outer surface. The first cylinder (12) has a clamping center (7) at its output end. The guide positioning seat (8) has a fixed cylinder (13) on its outer surface. The second cylinder (13) has a positioning wedge (9) at its output end. The centering indexing rotating shaft (4) has a locking nut (5) threaded on its side of its outer surface. The centering indexing rotating shaft (4) has a centering expansion sleeve (6) on its outer surface.

2. The grinding fixture for angular positioning of a circular part according to claim 1, characterized in that: The first tip seat (2) and the second tip seat (16) are disposed opposite to each other on the upper surface of the base (1), and the outer surface of the clamping tip (7) is fitted into the through hole inside the second tip seat (16).

3. The grinding fixture for angular positioning of a circular ring part according to claim 1, characterized in that: The centering and indexing rotating shaft (4) is provided with a first centering hole (10) and a second centering hole (11) at both ends. The inner surface of the first centering hole (10) is pressed and adapted to the end of the fixed tip (3), and the inner surface of the second centering hole (11) is pressed and adapted to the end of the clamping tip (7).

4. The grinding fixture for angular positioning of a circular ring part according to claim 1, characterized in that: The outer surface of the centering and indexing rotary shaft (4) is provided with a toothed groove (14), and the inner surface of the toothed groove (14) is pressed and adapted to the outer surface of the positioning wedge (9).

5. The grinding fixture for angular positioning of a circular ring part according to claim 1, characterized in that: The inner surface of the centering expansion sleeve (6) is adapted to the outer surface of the centering indexing rotation shaft (4), and the end face of the locking nut (5) is in contact with the end face of the centering expansion sleeve (6).

6. The grinding fixture for angular positioning of a circular part according to claim 1, characterized in that: The guide positioning seat (8) has an irregular hole (15) inside, and the inner surface of the irregular hole (15) is fitted to the outer surface of the positioning wedge (9).

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