A high-precision grinding device for piston surfaces
By designing a U-shaped equipment frame and fixing components, the problems of chip residue and adaptability in the piston surface grinding device were solved, enabling high-precision grinding and rapid changeover of the piston surface, thus improving processing efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MAANSHAN YUTAI PRECISION MFG CO LTD
- Filing Date
- 2025-06-12
- Publication Date
- 2026-05-26
AI Technical Summary
Existing piston surface grinding equipment suffers from problems such as chip residue and inflexibility in adapting to various piston processing requirements, resulting in uneven grinding accuracy and dimensional deviations.
A high-precision grinding device was designed, comprising a U-shaped equipment frame, a fixing component, and a drive device. Through the combination of modular sleeves and tension rings, the piston can be flexibly fixed and quickly changed. It is equipped with a grinding head and a surface cleaning rod to ensure the accuracy of the grinding process.
It achieves high-precision grinding of the piston surface, avoids chip residue, adapts to various piston specifications, improves processing efficiency and accuracy, and meets the processing requirements of extremely high speeds.
Smart Images
Figure CN224274357U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of piston surface grinding technology, and more specifically to a high-precision grinding device for piston surfaces. Background Technology
[0002] The piston is a reciprocating component in the cylinder block of an automobile engine. The basic structure of the piston can be divided into the top, head, and skirt. The piston top is the main part that makes up the combustion chamber, and its shape is related to the type of combustion chamber selected. The main function of the piston is to bear the combustion pressure in the cylinder and transmit this force to the crankshaft through the piston pin and connecting rod. As a typical key automobile component, the piston has strong technological characteristics in terms of machining.
[0003] The shortcomings of existing technology: Piston surface grinding requires extremely high precision. After grinding the piston surface with existing equipment, there may be residual debris and other impurities on the surface, resulting in uneven surface roughness or dimensional deviation of the piston during the grinding process. At the same time, the size and shape of different models of pistons vary greatly, and existing equipment may not be able to flexibly adjust to adapt to the processing needs of various pistons and cannot achieve the function of rapid model changeover. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a high-precision grinding device for piston surfaces, which solves the problem that the surface may have residual debris and other impurities after grinding by the existing devices in the background art, and that the existing devices may not be able to be flexibly adjusted to adapt to the processing requirements of various pistons and cannot achieve rapid model change.
[0005] This utility model provides the following technical solution: a high-precision grinding device for piston surfaces, including a U-shaped equipment frame, a first linear guide rail is provided at the top center of the U-shaped equipment frame, a second linear guide rail is provided on both sides of the inner wall of the U-shaped equipment frame, two slide rails are provided at the bottom of the inner cavity of the U-shaped equipment frame, a fixing component is provided in the middle of the U-shaped equipment frame, and a driving device is provided on each of the two second linear guide rails, with a surface cleaning rod fixedly connected to the output end of one of the driving devices;
[0006] The fixing assembly includes a sleeve located at the bottom of the inner cavity of the U-shaped equipment frame. A piston block is provided in the middle of the inner cavity of the sleeve. A hydraulic groove is opened on the surface of the sleeve. An installation ring is fixedly connected to the bottom of the sleeve. A replacement head is fixedly connected to the middle of the installation ring. A sealing ring is fixedly connected to the inner wall of the replacement head.
[0007] Preferably, the inner wall of the sleeve is threaded to the replacement head, and the mounting ring has several first mounting holes. The bottom of the inner cavity of the U-shaped equipment frame has a through hole and a second mounting hole, and the positions of the first mounting holes and the second mounting holes are corresponding and connected.
[0008] Preferably, the inner cavity of the sleeve is provided with oil injection holes on both sides, and the inner cavity of the hydraulic groove is fitted with a tensioning ring, and the oil injection holes are connected to the hydraulic groove.
[0009] Preferably, a mounting bracket is fixedly connected to the bottom of the U-shaped equipment frame, and an electric push rod is installed at the top center of the mounting bracket. The protruding end of the electric push rod passes through the sealing ring and the through hole and is fixedly connected to the replacement head.
[0010] Preferably, a grinding head is fixedly connected to the output end of another drive device, and the position of the grinding head corresponds to that of the surface cleaning rod.
[0011] Preferably, the first linear guide rail and the second linear guide rail are arranged perpendicularly to each other, and the bottom end of the second linear guide rail is movably connected to the slide rail.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] 1. This utility model uses a modularly designed fixing component to fix the piston that needs to be ground. According to the specific specifications and dimensions of the piston, a sleeve of appropriate size is selected and threaded onto the replacement head. After the module of the fixing component is replaced, connecting bolts and other connecting parts are passed through the inner cavities of the first and second mounting holes to fix the sleeve on the mounting ring. This allows the device to be flexibly adjusted to adapt to the processing requirements of various pistons and realize a quick changeover operation.
[0014] 2. This utility model uses a tension ring to fix the piston to the sleeve surface. The tension ring has a uniform clamping force, which can prevent piston deformation. It also has good damping and vibration reduction performance and can adapt to extremely high speeds. After the piston is fixed to the sleeve surface, the drive equipment is started. The drive equipment drives the grinding head and the surface cleaning rod. The grinding head grinds the piston surface, and the surface cleaning rod cleans the debris generated after grinding, so as to avoid the residue of surface debris affecting the accuracy of subsequent grinding operations. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0016] Figure 2 This is a schematic diagram of the fixing component structure of this utility model.
[0017] Figure 3 This is a schematic diagram of the overall cross-sectional structure of this utility model.
[0018] Figure 4 For the present utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.
[0019] The attached figures are labeled as follows: 1. U-shaped equipment frame; 2. First linear guide rail; 3. Second linear guide rail; 4. Slide rail; 5. Fixing assembly; 51. Sleeve; 52. Piston block; 53. Hydraulic groove; 54. Mounting ring; 55. Replacement head; 56. Sealing ring; 57. First mounting hole; 58. Oil injection hole; 59. Tensioning ring; 6. Drive device; 7. Surface cleaning rod; 8. Through hole; 9. Second mounting hole; 10. Mounting bracket; 11. Electric push rod; 12. Grinding head. Detailed Implementation
[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The high-precision grinding device for piston surfaces involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0021] This invention provides a high-precision grinding device for piston surfaces, such as... Figure 1 - Figure 4 As shown, the device includes a U-shaped equipment frame 1. A first linear guide rail 2 is provided at the top center of the U-shaped equipment frame 1. Second linear guide rails 3 are provided on both sides of the inner wall of the U-shaped equipment frame 1. Two slide rails 4 are provided at the bottom of the inner cavity of the U-shaped equipment frame 1. A fixing component 5 is provided in the middle of the U-shaped equipment frame 1. A driving device 6 is provided on each of the two second linear guide rails 3. A surface cleaning rod 7 is fixedly connected to the output end of one of the driving devices 6. The driving device 6 drives the surface cleaning rod 7 to rotate and clean the position of the piston surface after grinding, so as to prevent the debris generated during the surface grinding process from remaining and affecting the accuracy of the grinding process.
[0022] Furthermore, such as Figure 1 and Figure 2 As shown, the fixing component 5 includes a sleeve 51 located at the bottom of the inner cavity of the U-shaped equipment frame 1. A piston block 52 is provided in the middle of the inner cavity of the sleeve 51. A hydraulic groove 53 is provided on the surface of the sleeve 51. An installation ring 54 is fixedly connected to the bottom end of the sleeve 51. A replacement head 55 is fixedly connected to the middle of the installation ring 54. A sealing ring 56 is fixedly connected to the inner wall of the replacement head 55. The fixing component 5 is modularly designed. The piston to be ground is sleeved on the surface of the sleeve 51 for grinding. The fixing component 5 of the appropriate size is replaced according to the specific size of the piston to be ground, so that the device can achieve a quick change operation.
[0023] Furthermore, such as Figure 2 , Figure 3 and Figure 4As shown, the inner wall of the sleeve 51 is threaded to the replacement head 55. The mounting ring 54 has several first mounting holes 57. The bottom of the inner cavity of the U-shaped equipment frame 1 has a through hole 8 and a second mounting hole 9. The positions of the first mounting holes 57 and the second mounting holes 9 are corresponding and connected. According to the specifications and dimensions of the piston to be ground, a sleeve 51 of appropriate size is selected and the sleeve 51 is threaded to the surface of the replacement head 55, so that the device can be flexibly adjusted to adapt to the processing requirements of various pistons. After the module replacement of the fixing component 5 is completed, the connecting bolts and other connecting parts are passed through the inner cavities of the first mounting holes 57 and the second mounting holes 9 to fix their positions, which effectively improves the processing efficiency of the device.
[0024] Furthermore, such as Figure 4 As shown, oil injection holes 58 are provided on both sides of the inner cavity of the sleeve 51, and a tensioning ring 59 is fitted inside the inner cavity of the hydraulic groove 53. The oil injection holes 58 are connected to the hydraulic groove 53.
[0025] Furthermore, such as Figure 3 and Figure 4 As shown, a mounting bracket 10 is fixedly connected to the bottom end of the U-shaped equipment frame 1. An electric push rod 11 is installed at the top center of the mounting bracket 10. The extended end of the electric push rod 11 passes through the sealing ring 56 and the through hole 8 and is fixedly connected to the replacement head 55. After the piston to be ground is sleeved on the surface of the sleeve 51, the electric push rod 11 is started. Through the extension and retraction of the extended end of the electric push rod 11, the piston block 52 is pushed to move up and down in the inner cavity of the sleeve 51. When it moves upward, it squeezes the hydraulic oil added to the inner cavity of the sleeve 51. The sealing ring 56 ensures the sealing of the piston block 52 moving in the inner cavity of the sleeve 51. The tension ring 59 expands outward evenly under the action of hydraulic pressure. The tension ring 59 generates pressure on the inner wall of the piston, fixing it to the surface of the sleeve 51. After fixing, the grinding operation is performed. The clamping force of the tension ring 59 is uniform, which can prevent piston deformation. At the same time, it has good damping and vibration reduction performance and can adapt to extremely high speeds.
[0026] Furthermore, such as Figure 3 As shown, a grinding head 12 is fixedly connected to the output end of another drive device 6. The grinding head 12 corresponds to the position of the surface cleaning rod 7. After the piston is fixed, the drive device 6 is started, and the grinding head 12 is driven by the drive device 6 to perform grinding operation on the piston surface.
[0027] Furthermore, such as Figure 1 and Figure 3 As shown, the first linear guide 2 and the second linear guide 3 are arranged perpendicularly to each other. The bottom end of the second linear guide 3 is movably connected to the slide rail 4. The first linear guide 2 and the second linear guide 3 drive the drive device 6 to move up, down, left and right to complete the multi-directional grinding operation on the piston surface.
[0028] The working principle of this utility model is as follows: First, select a sleeve 51 of appropriate size according to the specific specifications and dimensions of the piston to be ground. Thread the sleeve 51 onto the changing head 55. Replace the fixing component 5 of appropriate size according to the processing requirements of different pistons, allowing the device to be flexibly adjusted to adapt to the processing needs of various pistons and achieve rapid changeover. After the sleeve 51 is replaced, connecting bolts and other connecting parts are inserted through the inner cavities of the first mounting hole 57 and the second mounting hole 9 to fix their positions, effectively improving the processing efficiency of the device. Next, the piston is fitted onto the surface of the sleeve 51, and the electric push rod 11 is activated. Through the extension and retraction of the extended end of the electric push rod 11, the piston block 52 is pushed up and down within the inner cavity of the sleeve 51. When moving upwards, it squeezes the hydraulic oil added to the inner cavity of the sleeve 51, thus... The sealing ring 56 ensures the sealing of the piston block 52 as it moves within the sleeve 51. The tension ring 59 expands outwards evenly under hydraulic pressure, generating pressure on the inner wall of the piston to fix it to the surface of the sleeve 51. The clamping force of the tension ring 59 is uniform, preventing piston deformation and providing good damping and vibration reduction performance, allowing it to adapt to extremely high speeds. After fixing, the drive device 6 is started. The first linear guide rail 2 and the second linear guide rail 3 drive the drive device 6 to move up, down, left, and right, completing the multi-directional movement of the grinding head 12 and the surface cleaning rod 7. The drive device 6 drives the grinding head 12 to perform grinding operations on the piston surface. The rotation of the surface cleaning rod 7 cleans the area on the piston surface after grinding, preventing debris residue generated during surface grinding from affecting the accuracy of the grinding process.
[0029] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.
[0030] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.
[0031] In conclusion, the above are merely preferred embodiments of this utility model and are 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 high-precision grinding device for piston surfaces, comprising a U-shaped equipment frame (1), a first linear guide rail (2) disposed at the top center of the U-shaped equipment frame (1), and second linear guide rails (3) disposed on both sides of the inner wall of the U-shaped equipment frame (1), characterized in that: The U-shaped equipment rack (1) has two slide rails (4) at the bottom of its inner cavity, and a fixing component (5) is provided in the middle of the U-shaped equipment rack (1). Both second linear guide rails (3) are equipped with driving devices (6), and the output end of one of the driving devices (6) is fixedly connected to a surface cleaning rod (7). The fixing component (5) includes a sleeve (51) located at the bottom of the inner cavity of the U-shaped equipment frame (1). A piston block (52) is provided in the middle of the inner cavity of the sleeve (51). A hydraulic groove (53) is provided on the surface of the sleeve (51). An installation ring (54) is fixedly connected to the bottom of the sleeve (51). A replacement head (55) is fixedly connected to the middle of the installation ring (54). A sealing ring (56) is fixedly connected to the inner wall of the replacement head (55).
2. The high-precision grinding device for piston surfaces according to claim 1, characterized in that: The inner wall of the sleeve (51) is threaded to the replacement head (55). Several first mounting holes (57) are provided on the mounting ring (54). The bottom of the inner cavity of the U-shaped equipment frame (1) is provided with a through hole (8) and a second mounting hole (9). The positions of the first mounting hole (57) and the second mounting hole (9) are corresponding and connected.
3. The high-precision grinding device for piston surfaces according to claim 1, characterized in that: Oil injection holes (58) are provided on both sides of the inner cavity of the sleeve (51), and a tensioning ring (59) is fitted in the inner cavity of the hydraulic groove (53). The oil injection holes (58) are connected to the hydraulic groove (53).
4. The high-precision grinding device for piston surfaces according to claim 1, characterized in that: The bottom end of the U-shaped equipment rack (1) is fixedly connected to the mounting bracket (10), and the top center of the mounting bracket (10) is equipped with an electric push rod (11). The protruding end of the electric push rod (11) passes through the sealing ring (56) and the through hole (8) and is fixedly connected to the replacement head (55).
5. A high-precision grinding device for piston surfaces according to claim 1, characterized in that: Another drive device (6) has a grinding head (12) fixedly connected to its output end, and the grinding head (12) corresponds to the position of the surface cleaning rod (7).
6. A high-precision grinding device for piston surfaces according to claim 1, characterized in that: The first linear guide (2) and the second linear guide (3) are set perpendicular to each other, and the bottom end of the second linear guide (3) is movably connected to the slide rail (4).