Grinding head and its center frame

Abstract

The utility model relates to a polishing jig technical field, concretely relates to a grinding head and its center frame, it includes main part and polishing part, the polishing part is fixed in the outside of main part, the side away from the main part of polishing part is equipped with the polishing face, the polishing face constitutes the outer convex circular surface with the first axis of main part as the center, the polishing face is relative the first axis of main part and is set up obliquely, the present application utilizes the synergistic effect of grinding head geometric orientation when workpiece high -speed rotation, makes the chip directional throw off along the polishing face and expands the heat dissipation area, effectively breaks the chip accumulation and heat accumulation effect of traditional grinding head center area, not only will workpiece surface temperature control in reasonable range, avoid material softening burn, still make abrasive load distribution more uniform, cooperate vibration suppression effect significantly improves the machining precision and grinding head life, realizes the systematic optimization of chip removal efficiency, heat dissipation performance and grinding stability.

Description

Technical Field

[0001] This utility model relates to the technical field of grinding fixtures, and in particular to a grinding head and its center support. Background Technology

[0002] In applications of traditional symmetrical grinding heads, when grinding workpieces at high speeds, the inherent limitations of the chip removal path prevent the chips generated during processing from dissipating quickly and effectively, and heat cannot be conducted and diffused in a timely manner. This easily leads to a buildup effect in the central contact area between the grinding head and the workpiece. This combined effect of localized overheating and chip accumulation causes a series of processing quality problems: on the one hand, the chip space inside the grinding head is quickly filled and blocked, affecting the ability to continue processing; on the other hand, the workpiece surface suffers burn marks due to high temperatures, and the changes in the material's microstructure cause localized softening, severely affecting processing accuracy and surface quality; more seriously, the continuous high-temperature environment accelerates the chemical reaction between the abrasive and the workpiece material, causing the chemical bonds on the abrasive surface to break and the microstructure to be destroyed, resulting in premature passivation and failure of the abrasive, significantly shortening the grinding head's service life and increasing production costs. Utility Model Content

[0003] The purpose of this invention is to provide a grinding head and its center support to solve the problem that chips are difficult to disperse quickly and effectively during grinding operations in the prior art.

[0004] The technical solution of this utility model is: a grinding head, comprising: a main body and a grinding part, wherein the grinding part is fixed on the outside of the main body, and the side of the grinding part away from the main body is provided with a grinding surface, wherein the grinding surface is an outwardly convex arc surface formed with the first axis of the main body as the center, and the grinding surface is inclined relative to the first axis of the main body.

[0005] Preferably, the polishing surface is an elliptical arc projected onto the plane of the first axis of the main body, and the polishing surface is symmetrically distributed about the first axis of the main body.

[0006] Preferably, the polishing surface is divided into a first processing surface and a second processing surface along its inclined direction, and at least one of the first processing surface and the second processing surface has a continuously varying radius of curvature along the inclined direction of the polishing surface.

[0007] Preferably, the first processed surface is curved around the second axis of the main body to form a composite curved surface, the second processed surface has the same inclination direction as the polishing surface, and the first processed surface and the second processed surface are smoothly transitioned.

[0008] Preferably, the thickness of the polishing part is less than the thickness of the main body, and a chamfer is provided at the connection between the main body and the polishing part.

[0009] This application also provides a center frame, including a grinding head.

[0010] Preferably, the frame and several claws are movably connected to the same side of the frame, and the main body is fixed to the end of the claw. The claw is used to drive the grinding head to approach the surface of the rotating workpiece.

[0011] Preferably, at least one pair of claws are distributed in a clamping state, and the grinding heads of the pair of claws are arranged opposite each other.

[0012] Compared with the prior art, the advantages of this utility model are: This solution designs the grinding section as an outwardly convex, curved, inclined surface structure. When the workpiece rotates at high speed, the synergistic effect of the grinding head's geometric guidance causes the chips to be directionally thrown away along the grinding surface and expands the heat dissipation area. This effectively breaks the chip accumulation and heat buildup effect in the central area of ​​the traditional grinding head. It not only controls the workpiece surface temperature within a reasonable range and avoids material softening and burning, but also makes the abrasive load distribution more uniform. Combined with the vibration suppression effect, it significantly improves the machining accuracy and grinding head life, achieving a systematic optimization of chip removal efficiency, heat dissipation performance, and grinding stability. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of a grinding head according to the present invention; Figure 2 This is a side view of a grinding head according to the present invention; Figure 3 This is a front view of a central frame according to the present invention.

[0014] Explanation of reference numerals in the attached figures: 1. Main body; 11. First axis; 12. Second axis; 13. Chamfer; 2. Grinding part; 21. Grinding surface; 211. First machining surface; 212. Second machining surface; 3. Frame; 4. Claw body; 5. Grinding head. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] like Figure 1 and Figure 2 As shown, a grinding head is used to grind the surface of a high-speed rotating workpiece. It includes a main body 1 and a grinding part 2. The grinding part 2 is fixed to the outside of the main body 1. The grinding part 2 has a grinding surface 21 on the side away from the main body 1. The grinding surface 21 is a convex arc surface formed with the first axis 11 of the main body 1 as the center. The grinding surface 21 is inclined relative to the first axis 11 of the main body 1, which significantly reduces the chip accumulation density per unit area, controls the surface temperature of the workpiece within a reasonable range, and avoids material softening due to local overheating.

[0019] Specifically, the main body 1 is constructed as a block structure with a rectangular cross-section, which has excellent rigidity and strong torsional resistance, and can provide stable support and precise guidance. It is used to install on various types of equipment used to carry the grinding head 5, such as surface grinders or guideway grinders.

[0020] A grinding section 2 is fixedly mounted on the outer periphery of the main body 1 for grinding the workpiece. In this embodiment, the grinding section 2 is integrally formed with the main body 1, avoiding problems such as rigidity loss, fretting, and stress concentration caused by the connection interface. Vibration and cutting force can be directly and seamlessly transmitted from the grinding section 2 to the robust main body 1, and then to the equipment body. The thickness of the grinding section 2 is less than the thickness of the main body 1. Preferably, the thickness of the grinding section 2 is within the thickness range of the main body 1 in the thickness direction. A chamfer 13 is provided at the connection between the main body 1 and the grinding section 2. When the grinding head 5 is installed on the equipment or when grinding is performed, only the robust main body 1 will contact the guide rail or mounting surface of the equipment. The protruding grinding section 2 is suspended in the air, completely avoiding the risk of collision and interference with non-processed objects, thus protecting the grinding section 2 itself and the equipment.

[0021] The main body 1 has a first axis 11 and a second axis 12. The first axis 11 is parallel to its thickness direction and passes through the geometric center of its rectangular cross-section. The first axis 11 is the core reference for the precise positioning and load bearing of the main body 1 on the equipment mounting base, ensuring that the load is evenly distributed along the axial direction. The second axis 12 is in the plane of symmetry in the width direction of the main body 1 and intersects the vertical reference axis perpendicularly. Both the second axis 12 and the first axis 11 serve as positioning reference lines for the grinding part 2.

[0022] The grinding surface 21 is an elliptical arc projected onto the plane of the first axis 11 of the main body 1. The grinding surface 21 is symmetrically distributed around the first axis 11 of the main body 1. It plays a guiding role from the center to both sides, gradually expanding, guiding the chips to slide along its smooth curve to the more open areas on both sides, and finally being thrown out of the processing area. The chip space on the surface of the grinding head 5 will not be blocked, ensuring continuous and stable processing capability and reducing downtime caused by cleaning the grinding head 5.

[0023] In this embodiment, the polishing surface 21 is divided into a first processing surface 211 and a second processing surface 212 along its inclined direction. At least one of the first processing surface 211 and the second processing surface 212 has a continuously varying radius of curvature along the inclined direction of the polishing surface 21. Preferably, the first processing surface 211 is curved around the second axis 12 of the main body 1 to form a composite curved surface. The second processing surface 212 has the same inclined direction as the polishing surface 21. Preferably, the angle between the second processing surface 212 and the second axis 12 is 100°.

[0024] The first machining surface 211 and the second machining surface 212 have a smooth transition. The first machining surface 211 has a smaller radius of curvature than the second machining surface 212, meaning it is steeper. This results in higher local pressure during grinding, and its aggressive geometry effectively cuts into the material, achieving efficient cutting and chip breaking. The second machining surface 212 has a larger radius of curvature than the first machining surface 211, creating a low-resistance escape channel for the chips. After being pushed from the high-pressure cutting zone to this area, the chips can be smoothly discharged along the inclined direction, thus avoiding chip accumulation. Due to the smooth transition between the first machining surface 211 and the second machining surface 212, a continuous, streamlined surface without abrupt changes is ensured from the cutting zone to the chip removal zone. The chips continuously flow from the first machining surface 211 to the second machining surface 212 and are eventually thrown away from the grinding head 5. In other embodiments, the grinding surface 21 is divided into multiple continuously varying machining surfaces along its inclined direction.

[0025] like Figure 3As shown, this application also provides a center frame for supporting the grinding head 5 to grind chips from the outer surface of a workpiece. It includes a frame body 3 and several claw bodies 4, all movably connected to the same side of the frame body 3. Each claw body 4 has at least one grinding head 5 fixedly mounted on it, and a grinding section 2 protrudes from the claw body 4. Preferably, at least one pair of claw bodies 4 are distributed in a clamping state, with the grinding heads 5 of the pair of claw bodies 4 positioned opposite each other. Since the workpiece is always rotating during processing, the integrated grinding head 5 grinds the entire circumferential surface of its area, ensuring highly consistent and complete surface quality across the entire length of the workpiece. More preferably, at least one claw body 4 is slidably connected to the frame body 3, and this claw body 4 slides forward to the surface of the workpiece.

[0026] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A grinding head, characterized in that, include: The main body (1) and the polishing part (2) are fixed on the outside of the main body (1). The polishing part (2) has a polishing surface (21) on the side away from the main body (1). The polishing surface (21) is a convex arc surface formed with the first axis (11) of the main body (1) as the center. The polishing surface (21) is inclined relative to the first axis (11) of the main body (1).

2. A grinding head according to claim 1, characterized in that: The polishing surface (21) is an elliptical arc projected onto the plane of the first axis (11) of the main body (1), and the polishing surface (21) is symmetrically distributed with respect to the first axis (11) of the main body (1).

3. A grinding head according to claim 2, characterized in that: The polishing surface (21) is divided into a first processing surface (211) and a second processing surface (212) along its inclined direction, and at least one of the first processing surface (211) and the second processing surface (212) has a continuously varying radius of curvature along the inclined direction of the polishing surface (21).

4. A grinding head according to claim 3, characterized in that: The first processing surface (211) is bent around the second axis (12) of the main body (1) to form a composite curved surface. The second processing surface (212) has the same inclination direction as the polishing surface (21). The first processing surface (211) and the second processing surface (212) are smoothly transitioned.

5. A grinding head according to claim 1, characterized in that: The thickness of the polishing part (2) is less than the thickness of the main body part (1), and a chamfer (13) is provided at the connection between the main body part (1) and the polishing part (2).

6. A central frame, characterized in that: Includes a grinding head (5) as described in any one of claims 1-5.

7. A center frame according to claim 6, characterized in that: The frame (3) and several claws (4) are movably connected to the same side of the frame (3). The main body (1) is fixed to the end of the claw (4). The claw (4) is used to drive the grinding head (5) to approach the surface of the rotating workpiece.

8. A center frame according to claim 7, characterized in that: At least one pair of claws (4) are distributed in a clamping state, and the grinding heads (5) of the pair of claws (4) are arranged opposite to each other.

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