Tool for flat grinding or flat grinding machining of high-parallelism and high-planeness part
By designing a tooling scheme and utilizing a combination of base, ring, and fixing plate, the problem of fixing small parts with high flatness and high parallelism was solved, achieving efficient and precise machining results.
Patent Information
- Application Number
- CN202423206234.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing technologies struggle to efficiently process small parts with high flatness and parallelism, especially since the small size of the parts makes them difficult to fix and the non-magnetic material cannot be adsorbed onto the magnetic chuck of the grinding machine.
A tooling was designed, including a base, a ring, a fixing plate, and screws. The parts are fixed by connecting and fixing with screws, and the magnetic properties of the base and the ring are used to fix them to the grinding disk. The shape of the fixing plate matches the shape of the parts to achieve stable fixation.
It enables high-quality and high-efficiency manual flat grinding or surface grinding of micro parts with high flatness and high parallelism, solves the problem of part fixation, and improves processing accuracy and efficiency.
Smart Images
Figure CN223617497U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aerospace machining, and in particular to a tooling for surface grinding or surface honing of parts with high parallelism and high flatness. Background Technology
[0002] Aircraft actuation components contain numerous miniature cartridge valves. These valves consist of several highly flat and parallel micro-rotating parts, achieving precise flow control through high-precision surface-to-surface mating. To machine these highly flat and parallel micro-parts, high-precision planar machining techniques such as manual surface grinding or lapping are necessary. However, the actual machining process reveals two main problems: firstly, due to the small size of the parts, with the largest outer diameter being only [missing information]... With a thickness of only 1.2mm, if the part is directly hand-held during manual grinding, the relevant performance indicators cannot be guaranteed. On the other hand, since the material of this type of part is non-magnetic, it cannot be directly attached to the magnetic chuck of the grinding machine for processing during flat grinding. Utility Model Content
[0003] This invention aims to address the aforementioned processing challenges by providing a positioning and fixing fixture for manual flat grinding or grinding processes, thereby enabling high-quality and high-efficiency processing of such high-flatness and high-parallelism micro parts.
[0004] To achieve the objective of this utility model, the technical solution adopted is as follows:
[0005] A tooling is provided for surface grinding or surface honing of parts with high parallelism and high flatness, including a base, a ring, a fixing plate, and screws;
[0006] The base and the ring are connected by screws. The target part is fixed through the round hole of the fixing plate. At the same time, the fixing plate is embedded in the concave surface formed after the base and the ring are engaged, which ensures the fixation of the target part during manual flat grinding or flat grinding.
[0007] The base is a two-section stepped cylinder. The flatness requirement of the small end is 0.002mm, the parallelism requirement between the large end and the small end is 0.005mm, and the roughness requirement of both end faces is Ra0.2μm. In addition, the parallelism requirement between the step surface and the small end is 0.01mm, and the roughness requirement of the small end cylindrical surface is Ra0.2μm.
[0008] At least three countersunk through holes are evenly distributed on the large end face to allow screws to pass through and connect the base to the ring sleeve fitted on the small end. After the screw is inserted into the countersunk through hole, the screw head sinks into the base end face, thereby avoiding interference on the large end face during use.
[0009] The outer diameter of the ring should be the same as the outer diameter of the large end face of the base. The surface roughness of the two end faces and the inner cylindrical surface of the ring should be Ra0.8μm, and the parallelism requirement of the two end faces should be 0.01mm.
[0010] The height of the ring is higher than the height of the small end; the height difference between the ring and the small end forms an inner groove between the base and the ring for placing the fixing plate;
[0011] The end face of the ring has the same number of threaded holes as the base, which are evenly distributed and can be aligned with the through holes of the base. This is to correspond with the countersunk through holes of the base and to be connected and fitted by screws.
[0012] The base, ring, and fixing plate are all magnetic, which ensures that they can be stably fixed on the disk of the surface grinder during surface grinding.
[0013] The outer contour of the fixing plate is circular, and it is fixed in place with the inner hole of the ring during use. According to the outer contour of the part being manually ground or polished, the fixing plate is machined with the same shape as the outer contour of the part, which is used to fix the part during the manual grinding or polishing process.
[0014] The fixing plate is machined with different numbers and shapes of internal holes according to the outer contour dimensions of the part to be processed and the requirements of the quantity to be processed at one time. However, the holes must be evenly distributed on the end face of the fixing plate to ensure uniform force distribution during use.
[0015] Beneficial effects: This invention provides an auxiliary tooling suitable for manual flat grinding or surface grinding of small parts with high parallelism and high flatness, thereby enabling high-quality and high-efficiency machining of such parts. Attached Figure Description
[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0017] Figure 1 This is an overall structural diagram of the present invention.
[0018] Figure 2 This is a schematic diagram of the overall installation of the tooling.
[0019] Figure 3 This is a diagram illustrating the process of manual flat grinding.
[0020] Figure 4 This is a schematic diagram illustrating the usage of the surface grinding process.
[0021] The components include: base 1, ring 2, fixing plate 3, and screw 4. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0023] This utility model provides a tooling suitable for manual surface grinding or surface lapping of small parts with high parallelism and high flatness, such as... Figure 1 As shown, it mainly consists of a base 1, a ring 2, a fixing plate 3, and screws 4. The base 1 and the ring 2 are connected by screws 4. The target part is fixed through the round hole of the fixing plate 3. At the same time, the fixing plate 3 is embedded in the concave surface formed after the base 1 and the ring 2 are engaged, thereby ensuring the fixation of the target part during manual flat grinding or flat polishing.
[0024] The base 1 is a two-section stepped cylinder. The flatness requirement of the small end is 0.002mm, the parallelism requirement between the large end and the small end is 0.005mm, and the roughness requirement of both end faces is Ra0.2μm. In addition, the parallelism requirement between the step surface and the small end is 0.01mm, and the roughness requirement of the small end cylindrical surface is Ra0.8μm.
[0025] The large end face has at least 3 countersunk through holes, which are evenly distributed on the large end face. These holes are used to connect the base 1 and the ring 2 by passing through the screw 4. After the screw is inserted into the hole, the screw head is recessed into the base end face, thereby avoiding interference of the large end face during use.
[0026] The outer diameter of the ring 2 should be the same as the outer diameter of the large end face of the base 1. The surface roughness of the two end faces and the inner cylindrical surface of the ring 2 should be Ra0.2μm, and the parallelism requirement of the two end faces should be 0.01mm.
[0027] The end face of the ring 2 has the same number of threaded holes as the base 1, which are evenly distributed and can be aligned with the through holes of the base 1. They are used to correspond with the through holes of the base 1 and are connected and engaged by screws 4.
[0028] The main components, such as the base 1, the ring 2, and the fixing plate 3, are made of magnetically conductive materials, which ensures that they can be stably fixed on the disk of the surface grinder during surface grinding.
[0029] The outer contour of the fixing plate 3 is circular, and it is fixed in conjunction with the inner hole of the ring sleeve 2 during use. According to the outer contour of the part being manually flat-ground or flat-grinded, the fixing plate 3 is machined with the same shape as the outer contour of the part, which is used to fix the part during the manual flat-ground or flat-grinding process.
[0030] Depending on the outer contour dimensions of the part to be processed and the required quantity to be processed at one time, different numbers and shapes of inner holes can be processed on the fixed plate 3. However, they must be evenly distributed on the end face of the fixed plate 3 to ensure uniform force distribution during use.
[0031] like Figure 3 As shown, if the tooling is used for manual flat grinding, after applying glue evenly to one side of the fixing plate 3, it is bonded to the concave surface formed by the base 1 and the ring 2. Then, with the fixing plate 3 facing down, the part to be processed is embedded into the inner hole of the fixing plate 3 for fixing. During use, the processor holds the outer circle of the base 1 with the surface to be processed facing down, making even and stable contact with the flat grinding plate to perform flat grinding.
[0032] like Figure 4 As shown, if the tooling is used for surface grinding, the large end of the base 1 faces down and is adsorbed onto the magnetic chuck of the grinding machine. The part to be processed is embedded into the fixing hole on the end face of the fixing plate 3, with the surface to be processed facing up. During use, the grinding wheel of the surface grinding equipment contacts the part to be processed from top to bottom to perform surface grinding.
[0033] Example 1:
[0034] This tooling is required for manual flat grinding of hydraulic sealing parts with high parallelism and high flatness of a certain check valve.
[0035] First, such as Figure 2 As shown, pass the ring 2 through the base 1 and tighten it with screws 4. Prepare the fixing plate 3 as needed. After evenly applying glue to one side of the fixing plate 3, adhere it to the concave surface formed by the base 1 and the ring 2. After completing the overall assembly of the tooling, as shown... Figure 3 As shown, with the fixing plate 3 facing down, the part to be processed is embedded into the inner hole of the fixing plate 3 for fixing. During use, the operator holds the outer circle of the base 1 with the surface to be processed facing down, making uniform and stable contact with the flat grinding plate to perform flat grinding.
[0036] Example 2:
[0037] This tooling is required for surface grinding of a hydraulic sealing part with high parallelism and high flatness of a check valve.
[0038] First, such as Figure 2 As shown, the ring 2 is passed through the base 1 and tightened with screw 4. The large end of the base 1 is facing down and is attracted to the magnetic chuck of the grinding machine. The part to be processed is embedded in the fixing hole on the end face of the fixing plate 3 with the surface to be processed facing up. During use, the grinding wheel of the flat grinding equipment contacts the part to be processed from top to bottom to perform flat grinding.
[0039] Finally, it should be noted that the specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A tooling for surface grinding or lapping of parts with high parallelism and high flatness, characterized in that, Includes base (1), ring (2), fixing plate (3), screw (4); The base (1) and the ring (2) are connected by screws (4). The target part is fixed through the round hole of the fixing plate (3). At the same time, the fixing plate (3) is embedded in the concave surface formed after the base (1) and the ring (2) are engaged, ensuring the fixation of the target part during manual flat grinding or flat grinding.
2. The tooling according to claim 1, characterized in that, The base (1) is a two-section stepped cylinder. The flatness requirement of the small end is 0.002mm, the parallelism requirement between the large end and the small end is 0.005mm, and the roughness requirement of both end faces is Ra0.2μm. In addition, the parallelism requirement between the step surface and the small end is 0.01mm, and the roughness requirement of the small end cylindrical surface is Ra0.8μm.
3. The tooling according to claim 2, characterized in that, At least three countersunk holes are evenly distributed on the large end face to allow screws (4) to pass through and connect the base (1) to the ring (2) fitted on the small end. After the screw passes through the countersunk holes, the screw head sinks into the base end face, thereby avoiding interference on the large end face during use.
4. The tooling according to claim 1, characterized in that, The outer diameter of the ring (2) should be the same as the outer diameter of the large end face of the base (1). The surface roughness of the two end faces and the inner cylindrical surface of the ring (2) is Ra0.8μm, and the parallelism requirement of the two end faces is 0.01mm.
5. The tooling according to claim 4, characterized in that, The height of the ring (2) is higher than the height of the small end; the drop between the ring (2) and the small end forms an inner groove between the base (1) and the ring (2) for placing the fixing plate; The end face of the ring (2) has the same number of threaded holes as the base (1), which are evenly distributed and can be aligned with the through hole position of the base (1) to correspond to the countersunk through hole of the base (1) and are connected and fitted by screws (4).
6. The tooling according to claim 1, characterized in that, The base (1), the ring (2), and the fixing plate (3) are all magnetic, thus ensuring that they can be stably fixed on the disk of the surface grinder during surface grinding.
7. The tooling according to claim 1, characterized in that, The outer contour of the fixing plate (3) is circular, and it is fixed in conjunction with the inner hole of the ring (2) during use. According to the outer contour of the part by hand flat grinding or flat grinding, the fixing plate (3) is machined with the same shape as the outer contour of the part, which is used to fix the part during the hand flat grinding or flat grinding process.
8. The tooling according to claim 7, characterized in that: The fixing plate (3) processes different numbers and shapes of inner holes according to the outer contour size characteristics of the part to be processed and the requirements of the quantity processed at one time. However, they must be evenly arranged on the end face of the fixing plate (3) to ensure uniform force during use.