Piston ring end face grinding machine

Abstract

The utility model provides a piston ring end face polisher, which relates to the technical field of piston ring manufacturing and comprises a workbench, one side of the top of the workbench is connected with a transverse moving table, the top of the transverse moving table is connected with a longitudinal moving table, the side face of the longitudinal moving table is connected with a polishing mechanism, and a rotating mechanism is arranged on the opposite side of the transverse moving table. The rotating mechanism is connected with a four-jaw chuck, a cross-shaped clamping block is arranged on the side face of the four-jaw chuck, an arc-shaped clamping step is arranged on the cross-shaped clamping block, an arc-shaped clamping block is arranged on the outer side of the arc-shaped clamping step, and a circular clamping space is formed by the arc-shaped clamping block and the arc-shaped clamping step. The piston ring end face machining device has the advantages of being compact in structure, easy and convenient to operate, high in adaptability and the like, and the production efficiency and the product quality can be remarkably improved.

Description

Technical Field

[0001] This utility model mainly relates to the field of piston ring manufacturing technology, specifically to a piston ring end face grinding machine. Background Technology

[0002] As a key component of internal combustion engines, the quality of the piston ring's end face machining directly affects the engine's sealing performance and service life. During the piston ring manufacturing process, both end faces typically require fine grinding to ensure that the flatness, roughness, and parallelism of the end faces meet technical requirements.

[0003] Currently, the grinding of piston ring end faces mainly relies on manual operation. Workers use handheld grinders or belt sanders to grind the end faces one by one. There is also a semi-automatic grinding equipment that requires clamping fixtures to fix the piston rings after they are loaded.

[0004] During the operation of specific embodiments, the inventors discovered the following defects:

[0005] Manual grinding is slow and cannot meet the needs of mass production, which restricts production efficiency. In addition, manual grinding requires a high level of skill from the grinding operator, making it difficult to ensure the consistency of grinding precision for each product. Problems such as uneven end faces or over-grinding are likely to occur. While some semi-automatic grinding equipment is available, its structure is complex, its adaptability is poor, and its operation is complicated when fixing piston rings.

[0006] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0007] 1. The technical problem to be solved by the utility model:

[0008] This utility model provides a piston ring end face grinding machine to solve the technical problems existing in the background art.

[0009] 2. Technical Solution:

[0010] To achieve the above objectives, the technical solution provided by this utility model is as follows: a piston ring end face grinding machine, including a worktable, a transverse moving table connected to one side of the top of the worktable, a longitudinal moving table connected to the top of the transverse moving table, a grinding mechanism connected to the side of the longitudinal moving table, a rotating mechanism provided on the opposite side of the transverse moving table, the rotating mechanism connected to a four-jaw chuck, a cross-shaped locking block provided on the side of the four-jaw chuck, an arc-shaped locking step provided on the cross-shaped locking block, and an arc-shaped locking block provided on the outer side of the arc-shaped locking step, the arc-shaped locking block and the arc-shaped locking step forming a circular locking space. When this device is working, a single piston ring is pressed inward and then placed into the locking space. Because the piston ring has a notch, there will be a certain amount of... Under the tension, the piston ring is initially fixed by the outer arc-shaped locking block. Then, the transverse moving table drives the longitudinal moving table to move towards the four-jaw chuck. After moving to the opposite side of the four-jaw chuck, the transverse moving table drives the grinding mechanism to move towards the piston ring. Under the pressure of the grinding block of the grinding mechanism, the piston ring fits against the disc surface of the four-jaw chuck. The arc-shaped locking step moves outward to position and clamp the piston ring. Then, the grinding mechanism moves backward away from the piston ring, and the rotating mechanism starts to work to drive the fixed piston ring to rotate. Then, under the action of the longitudinal moving table, the grinding mechanism gradually approaches the piston ring to perform grinding operations. After grinding is completed, the grinding mechanism resets, the arc-shaped locking step resets, and the piston ring can be removed for the next round of operation.

[0011] Furthermore, the transverse moving platform includes a transverse moving base, a limiting pressure plate connected to the top of the transverse moving base, a sliding space formed by the limiting pressure plate and the transverse moving base, a concave sliding platform slidably connected within the sliding space, the top of the concave sliding platform being connected to the longitudinal moving platform, a rotating lead screw matched and connected to the bottom of the concave sliding platform, and a reduction motor provided on the side of the transverse moving base, the reduction motor being connected to the rotating lead screw.

[0012] Furthermore, the longitudinal moving stage includes a supporting base plate, a telescopic cylinder is connected to one side of the top of the supporting base plate, the telescopic shaft of the telescopic cylinder is slidably connected to the supporting block, and the end of the telescopic shaft is connected to the grinding mechanism.

[0013] Furthermore, the grinding mechanism includes a concave base with a mounting groove in the middle. A spring is connected to the bottom of the mounting groove, and a threaded hole is provided in the middle of the bottom surface of the mounting groove. A convex grinding block is slidably connected to the mounting groove, and a fixing hole is provided in the middle of the convex grinding block. The convex grinding block is connected to the threaded hole by a bolt passing through the fixing hole.

[0014] Furthermore, the four-jaw chuck has multiple sets of positioning holes spaced apart at its end, with two positioning holes arranged in a cross pattern, and the positioning holes are connected to the arc-shaped chuck block by screws.

[0015] Furthermore, the heights of both the arc-shaped locking block and the arc-shaped locking step are less than the thickness of the piston ring.

[0016] 3. Beneficial effects:

[0017] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0018] This utility model is reasonably designed. Through the coordinated operation of the horizontal and vertical moving tables and the setting of the four-jaw chuck, it can realize the automatic positioning, clamping and grinding of piston rings, which significantly improves production efficiency and meets the needs of mass production.

[0019] The grinding mechanism adopts a spring-buffered convex grinding block design, which can automatically adjust the grinding pressure according to the actual situation of the piston ring end face. This avoids excessive pressure that could damage the workpiece, and also prevents insufficient pressure from affecting the grinding effect, thus ensuring stable end face roughness.

[0020] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the rotating mechanism structure of this utility model;

[0023] Figure 3 This utility model Figure 2 A magnified structural diagram at point A;

[0024] Figure 4 This is a schematic diagram of the horizontal and vertical moving stages of this utility model.

[0025] Figure 5 This is a schematic diagram of the transverse moving stage structure of this utility model.

[0026] Figure label:

[0027] 1. Worktable; 2. Lateral moving table; 21. Lateral moving base; 22. Limiting pressure plate; 23. Concave sliding table; 24. Rotating lead screw; 25. Gear motor; 3. Longitudinal moving table; 31. Support base plate; 32. Telescopic cylinder; 33. Support block; 4. Grinding mechanism; 41. Concave base; 42. Mounting groove; 43. Spring; 44. Threaded hole; 45. Convex grinding block; 46. Fixing hole; 47. Bolt; 5. Rotating mechanism; 6. Four-jaw chuck; 61. Positioning hole; 7. Cross-shaped locking block; 8. Arc-shaped locking step; 9. Arc-shaped locking block. Detailed Implementation

[0028] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this utility model, unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," "provided with," and "located in" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] It should be noted that structures not described in this invention do not involve the design points and improvement directions of this invention, and can all be achieved using existing technologies known to those skilled in the art.

[0033] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0034] See attached document Figure 1-5A piston ring end face grinding machine includes a worktable 1 made of cast iron, which has sufficient rigidity and stability. A transverse moving stage 2 is connected to one side of the top of the worktable 1. A longitudinal moving stage 3 is connected to the top of the transverse moving stage 2. A grinding mechanism 4 is connected to the side of the longitudinal moving stage 3. A rotating mechanism 5 is provided on the opposite side of the transverse moving stage 2. The rotating mechanism 5 is connected to a four-jaw chuck 6. The rotating mechanism 5 includes a servo motor and a reducer, and its output shaft is connected to the four-jaw chuck 6 via a coupling. A cross-shaped locking block 7 is provided on the side of the four-jaw chuck 6. An arc-shaped locking step 8 is provided on the cross-shaped locking block 7. An arc-shaped locking block 9 is provided outside the arc-shaped locking step 8. The arc-shaped locking block 9 and the arc-shaped locking step 8 form a circular locking space. The diameter of the circular locking space is slightly smaller than the free diameter of the piston ring to ensure clamping force. When this device is working, a single piston ring is pressed inward and then placed into the clamping space. Due to the notch in the piston ring, there will be a certain tension. The piston ring is initially fixed under the limit of the outer arc-shaped clamping block 9. Then, the transverse moving table 2 drives the longitudinal moving table 3 to move towards the four-jaw chuck 6. After moving to the opposite side of the four-jaw chuck 6, the transverse moving table 2 drives the grinding mechanism 4 to move towards the piston ring. Under the pressure of the grinding block of the grinding mechanism 4, the piston ring is in contact with the disk surface of the four-jaw chuck 6. The arc-shaped clamping step 8 moves outward to perform positioning and clamping operations on the piston ring. Then, the grinding mechanism 4 moves backward away from the piston ring, and the rotating mechanism 5 starts to work to drive the fixed piston ring to rotate. Then, the grinding mechanism 4 gradually approaches the piston ring under the action of the longitudinal moving table 3 to perform grinding operations. After grinding is completed, the grinding mechanism 4 resets, the arc-shaped clamping step 8 resets, and the piston ring can be removed for the next round of operations.

[0035] The transverse moving table 2 includes a transverse moving base 21. A limiting pressure plate 22 is connected to the top of the transverse moving base 21. A sliding space is formed between the limiting pressure plate 22 and the transverse moving base 21. A concave sliding table 23 is slidably connected within the sliding space. The top of the concave sliding table 23 is connected to the longitudinal moving table 3. A rotating lead screw 24 is matched and connected to the bottom of the concave sliding table 23. A reduction motor 25 is provided on the side of the transverse moving base 21. The reduction motor 25 is connected to the rotating lead screw 24. When the reduction motor 25 is working, it will drive the rotating lead screw 24 to rotate, thereby driving the concave sliding table 23 to move within the sliding space. When grinding is required, the rotating lead screw 24 drives the longitudinal moving table 3 to move towards the grinding mechanism 4. After grinding is completed, the rotating lead screw 24 drives the moving table to move back to the initial position, which facilitates the loading and unloading of piston rings.

[0036] The longitudinal moving stage 3 includes a support base plate 31. A telescopic cylinder 32 is connected to one side of the top of the support base plate 31. The telescopic shaft of the telescopic cylinder 32 is slidably connected to a support block 33. The end of the telescopic shaft is connected to the grinding mechanism 4. The telescopic operation of the telescopic cylinder 32 can drive the grinding mechanism 4 at the end to move closer to or further away from the four-jaw chuck 6. The support block 33 can support the telescopic shaft and improve the stability of the telescopic shaft when it slides.

[0037] The grinding mechanism 4 includes a concave base 41 with a mounting groove 42 in the middle. A spring 43 is connected to the bottom of the mounting groove 42, and a threaded hole 44 is provided in the middle of the bottom surface of the mounting groove 42. A convex grinding block 45 is slidably connected to the mounting groove 42. A fixing hole 46 is provided in the middle of the convex grinding block 45. The convex grinding block 45 is connected to the threaded hole 44 by a bolt 47 passing through the fixing hole 46. Before grinding, the outermost convex grinding block 45 presses against the piston ring, so that the piston ring is located at the bottom of the four-jaw chuck 6. Then the grinding mechanism 4 resets. During grinding, the telescopic cylinder 32 drives the concave base 41 to move towards the piston ring, and the outermost convex grinding block 45 grinds the piston ring. The lower part of the convex grinding block 45 is a rectangular slider that cooperates with the mounting groove 42, and the upper part is an arc-shaped grinding surface. The fixing hole 46 is a through hole and is coaxial with the threaded hole 44. Bolt 47 is an M6 socket head cap screw, with an appropriate length to ensure that there is enough adjustment allowance after tightening to facilitate the sliding of the convex grinding block 45. Due to the presence of spring 43, the elasticity of spring 43 allows the grinding stone to automatically adjust the clamping force when it contacts the piston ring end face, avoiding excessive pressure due to rigid fixation that may damage the workpiece or insufficient pressure for grinding effect. When there is slight unevenness or dimensional tolerance on the piston ring end face, spring 43 can compensate for the deviation through expansion and contraction, ensuring uniform and stable grinding force. After bolt 47 is connected to fixing hole 46, the convex grinding block 45 will abut against the end of bolt 47 under the action of spring 43. The convex grinding block 45 is slidably connected to the mounting groove 42. When the convex grinding block 45 needs to be replaced, simply unscrew bolt 47.

[0038] The four-jaw chuck 6 has multiple sets of positioning holes 61 spaced apart at its end. The positioning holes 61 are arranged in a cross pattern in pairs. The positioning holes 61 are connected to the arc-shaped locking block 9 by screws. In order to adapt to the grinding operations of piston rings of different sizes, multiple sets of positioning holes 61 are set. The arc-shaped locking block 9 is installed in different positions according to the size of the piston ring to be ground, so as to limit the piston ring.

[0039] The heights of the arc-shaped locking block 9 and the arc-shaped locking step 8 are both less than the thickness of the piston ring, which facilitates the grinding operation of the piston ring. In this embodiment, the arc-shaped locking block 9 is fixed to the positioning hole 61 by an M5 screw. The height of the arc-shaped locking block 9 and the arc-shaped locking step 8 is 2 / 3 of the thickness of the piston ring, ensuring that the grinding operation is not affected.

[0040] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A piston ring end face grinder characterized by: The working table (1) is connected with the transverse moving table (2) on one side of the top of the working table (1), the transverse moving table (2) is connected with the longitudinal moving table (3) on the top of the transverse moving table (2), the longitudinal moving table (3) is connected with the polishing mechanism (4) on the side of the longitudinal moving table (3), the transverse moving table (2) is provided with the rotating mechanism (5) on the opposite side of the transverse moving table (2), the rotating mechanism (5) is connected with the four-jaw chuck (6), the four-jaw chuck (6) is provided with the cross-shaped clamping block (7) on the side of the four-jaw chuck (6), the cross-shaped clamping block (7) is provided with the arc-shaped clamping position step (8) on the cross-shaped clamping block (7), the arc-shaped clamping position step (8) is provided with the arc-shaped clamping block (9) on the outside of the arc-shaped clamping position step (8), and the arc-shaped clamping block (9) and the arc-shaped clamping position step (8) form a circular clamping space.

2. A piston ring end face grinder as defined in claim 1, characterized in that: The transverse moving table (2) comprises a transverse moving base (21), the transverse moving base (21) is connected with the limiting pressing plate (22) on the top of the transverse moving base (21), the limiting pressing plate (22) and the transverse moving base (21) form a sliding space, the concave sliding table (23) is slidably connected in the sliding space, the concave sliding table (23) is connected with the longitudinal moving table (3) on the top of the concave sliding table (23), the concave sliding table (23) is matchedly connected with the rotating lead screw (24) on the bottom of the concave sliding table (23), and the transverse moving base (21) is provided with the speed reducer motor (25) on the side of the transverse moving base (21). The speed reducer motor (25) is connected with the rotating lead screw (24).

3. A piston ring end face grinder as defined in claim 1 wherein: The longitudinal moving table (3) comprises a supporting bottom plate (31), the supporting bottom plate (31) is connected with the telescopic air cylinder (32) on one side of the top of the supporting bottom plate (31), the telescopic shaft of the telescopic air cylinder (32) is slidably connected with the supporting block (33), and the telescopic shaft is connected with the polishing mechanism (4) at the end portion.

4. A piston ring end face grinder as defined in claim 3 wherein: The polishing mechanism (4) comprises a concave base (41), the concave base (41) is provided with an installation groove (42) in the middle portion of the concave base (41), the installation groove (42) is connected with the spring (43) on the bottom of the installation groove (42), the installation groove (42) is provided with the threaded hole (44) in the middle portion of the bottom surface of the installation groove (42), the installation groove (42) is slidably connected with the convex polishing block (45), the convex polishing block (45) is provided with the fixing hole (46) in the middle portion of the convex polishing block (45), and the convex polishing block (45) is connected with the threaded hole (44) through the fixing hole (46) and the bolt (47).

5. A piston ring end face grinder as defined in claim 1 wherein: The four-jaw chuck (6) is provided with a plurality of groups of positioning holes (61) at the end portions of the four-jaw chuck (6), the positioning holes (61) are arranged in a cross shape in two groups, and the positioning holes (61) are connected with the arc-shaped clamping block (9) through screws.

6. A piston ring end face grinder as defined in claim 1 wherein: The height of the arc-shaped clamping block (9) and the height of the arc-shaped clamping position step (8) are both less than the thickness of the piston ring.

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