A sliding plate structure and its processing technology

Abstract

The present invention discloses a vane structure and a processing technology thereof, belonging to the technical field of compressors. The vane structure comprises a vane body, a C-shaped groove is arranged on the side wall of the vane body, the center of the C-shaped groove is located on the thickness line of the vane body, and the opening of the C-shaped groove faces one side of the thickness center line of the vane body, the C-shaped groove comprises a groove body, the groove body is arranged on one side wall of the vane body, a left arc-shaped extension part and a right arc-shaped extension part are arranged on both sides of the groove body opening, one end of the left arc-shaped extension part and one end of the right arc-shaped extension part are fixedly arranged on the vane body, the angle between the other end of the left arc-shaped extension part and the thickness center line of the vane body is a first angle, and the angle between the other end of the right arc-shaped extension part and the thickness center line of the vane body is a second angle. The present invention improves the sealing performance of the compressor during operation, and at the same time, by reducing the friction coefficient between the vane and the piston roller, the service life and energy efficiency ratio of the compressor are improved.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a sliding vane structure and a processing technology thereof. Background Art

[0002] The sealing surface between the traditional vane and the compressor piston rotor during operation is a sliding friction, with high resistance and loss. Therefore, some technicians have improved the vane by applying a wear-resistant composite coating on the outer surface of the vane to increase the wear resistance of the vane; some compressor manufacturers also use a combination of vanes and rollers to solve this problem. However, these solutions and structures still have the problem of a large friction coefficient, which causes a large degree of wear on the vane and poor sealing of the compressor during operation, ultimately affecting the energy efficiency of the compressor. Summary of the invention

[0003] In view of the above-mentioned technical deficiencies, the object of the present invention is to provide a sliding vane structure and its processing technology, which improves the sealing performance of the compressor during operation, and at the same time increases the service life and energy efficiency of the compressor by reducing the friction coefficient between the sliding vane and the piston roller.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: the present invention provides a sliding vane structure, including a sliding vane body, a side wall of the sliding vane body is provided with a C-shaped groove, the center of the C-shaped groove is located on the thickness line of the sliding vane body, and the C-shaped groove opens to one side of the thickness center line of the sliding vane body, the C-shaped groove includes a groove body, the groove body is provided on one side wall of the sliding vane body, a left arc-shaped extension portion and a right arc-shaped extension portion are respectively provided on both sides of the groove body opening, one end of the left arc-shaped extension portion and one end of the right arc-shaped extension portion are both fixedly provided on the sliding vane body, the angle between the other end of the left arc-shaped extension portion and the thickness center line of the sliding vane body is a first angle, the angle between the other end of the right arc-shaped extension portion and the thickness center line of the sliding vane body is a second angle, and the sum of the first angle and the second angle is less than 180°.

[0005] Preferably, the length direction of the groove body is the same as the length direction of the thickness center line of the slide body, the centers of the left arc extension and the right arc extension are both located on the central axis of the groove body, and the arc openings of the left arc extension and the right arc extension are both facing the central axis direction of the groove body.

[0006] Preferably, the distance between the other end of the left arc-shaped extension portion and the other end of the right arc-shaped extension portion is 0.8-1.92 mm.

[0007] Preferably, the second angle is in the range of 15° to 46°, which is conducive to meeting the processing conditions of the second angle.

[0008] Preferably, the slide body, the groove body, the left arc-shaped extension portion and the right arc-shaped extension portion are an integrally formed structure, which is beneficial to enhancing the firmness of the overall structure and improving processing efficiency.

[0009] A processing technology for a sliding plate structure comprises the following steps:

[0010] S1: Slide rough blank processing, after processing, the T surface and S surface of the slide rough blank form opposite surfaces, the U surface and V surface form opposite surfaces, and a C-shaped groove is processed on one of the remaining surfaces;

[0011] S2: Processing the inner surface and V surface of the C-shaped groove of the rough blank of the slide.

[0012] The inner surface of the C-shaped groove of the rough slide blank is used to remove the cutting marks and excess machining allowances using a machining tool, and a machining allowance a1 is left;

[0013] Process the inner surface of the C-shaped groove, remove the machining allowance a1 and then polish it in situ;

[0014] After the inner surface of the C-shaped groove is processed, the end surface of the V-surface is processed while the clamping remains unchanged, so that the dimensional accuracy of the C-shaped groove and the V-surface and the verticality between the two meet the design requirements;

[0015] S3: Process the U surface with the V surface as the reference, so that the height and parallelism of the U surface and the V surface meet the design requirements;

[0016] S4: Clean the chamfers of the four surfaces, T surface, S surface, U surface and V surface, remove the processing burrs to obtain the finished slide, for example, use a nylon fiber brush to remove the remaining burrs on the edges where the surfaces intersect after fine grinding and form a fine fillet of no more than 0.1;

[0017] S5: Grouping. In order to match the height and width of the slide with the slide installation groove placed high on the cylinder to achieve high-pressure sealing, the thickness of the finished slide is measured and screened and grouped according to the measurement value of 0.002mm as the interval standard, so that it can be selected and installed in combination with the size of the cylinder slide groove.

[0018] Preferably, the blank manufacturing in S1 comprises the following steps:

[0019] Processing blank hexahedron, based on the blank of flat substrate, adopt double-station double-end milling machine to mechanically process and remove the processing allowance of substrate to obtain standard hexahedron processing blank or obtain standard whole hexahedron by punching and cutting;

[0020] Grinding four sides: Based on the hexahedron processed blank, a double-station double-end surface grinder is used to grind the outer four sides of the hexahedron processed blank after milling.

[0021] Milling the roller mounting groove, stacking and clamping several pieces of hexahedral blanks that have been ground and four-sided, so that each piece of the hexahedral blank that has been milled is further milled to obtain a rough-milled roller mounting groove;

[0022] Slice cutting and forming: the whole hexahedral processing blank after milling is cut into individual slide rough blanks by a slitting process;

[0023] Process T surface 4 and S surface 5 to make the thickness dimension and shape and position tolerance of the workpiece meet the design requirements;

[0024] The U surface 6 and the V surface 7 are processed so that the thickness dimension and the processing allowance of the workpiece meet the design requirements.

[0025] Preferably, the machining allowance a1 in S2 is 0.005-0.03 mm.

[0026] Preferably, the machining tool for removing cutting marks and excess machining allowance in S2 is a spherical milling cutter or a spherical grinding head, or a combination of a spherical milling cutter and a spherical grinding head.

[0027] Preferably, the slitting process is one of laser cutting, water jet cutting or high-speed wire cutting.

[0028] The beneficial effects of the present invention are as follows: by controlling and limiting the width and opening angle range of the C-shaped groove opening, the present invention can effectively improve the energy efficiency ratio of the compressor after the vane structure is installed in the vane groove of the compressor cylinder. At the same time, it is also convenient to bring the lubricating liquid in the suction chamber of the compressor into the C-shaped groove, thereby improving the lubrication effect, reducing the friction coefficient and wear, and increasing the service life of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a sliding plate structure provided in an embodiment of the present invention.

[0031] Figure 2 A schematic diagram of a C-shaped groove structure of a sliding plate structure provided in an embodiment of the present invention.

[0032] Figure 3 A schematic diagram of the positions of a first angle and a second angle of a sliding plate structure provided in an embodiment of the present invention.

[0033] Figure 4 A schematic diagram of the positions of the T-plane and the S-plane in a sliding plate structure provided in an embodiment of the present invention.

[0034] Figure 5 A schematic diagram of the positions of the U-surface and the V-surface in a sliding plate structure provided in an embodiment of the present invention.

[0035] Figure 6 Schematic diagram of the first embodiment of the C-shaped slot opening width.

[0036] Figure 7 Schematic diagram of the second embodiment of the C-shaped slot opening width.

[0037] Figure 8 Schematic diagram of the third embodiment of the C-shaped slot opening width.

[0038] Explanation of the accompanying drawings: 1. Slider body; 2. C-shaped groove; 21. Groove body; 22. Left arc-shaped extension; 23. Right arc-shaped extension; 3. Thickness center line of the slide body; 4. T-surface; 5. S-surface; 6. U-surface; 7. V-surface; A. First angle; B. Second angle. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1:

[0041] like Figure 1-3As shown, the present invention provides a vane structure, including a vane body 1, a C-shaped groove 2 is arranged on the side wall of the vane body 1 that contacts the compressor piston (rotating shaft eccentric shaft), the center of the C-shaped groove 2 is located on the thickness line of the vane body 1, and the opening of the C-shaped groove 2 faces one side of the thickness center line of the vane body 1, the C-shaped groove 2 includes a groove body 21, the groove body 21 is arranged on a side wall of the vane body 1, and the left arc-shaped extension part 22 and the right arc-shaped extension part 23 are respectively arranged on both sides of the opening of the groove body 21, and one end of the left arc-shaped extension part 22 and one end of the right arc-shaped extension part 23 are both fixed The slide body 1 is fixedly arranged on the slide body 1, the angle between the other end of the left arc-shaped extension 22 and the thickness center line of the slide body 1 is the first angle A, the angle between the other end of the right arc-shaped extension 23 and the thickness center line of the slide body 1 is the second angle B, and the sum of the first angle A and the second angle B is less than 180°, so that the roller mounting groove on the slide structure can be ensured to be a major arc, thereby further ensuring that the roller cannot fall out of the roller mounting groove during the operation of the compressor; the length direction of the groove body 21 is the same as the length direction of the thickness center line of the slide body 1 (that is, the groove body 21 is perpendicular to the thickness line of the vane body 1), the centers of the left arc-shaped extension 22 and the right arc-shaped extension 23 are both located on the central axis of the slot body 21, and the arc-shaped openings of the left arc-shaped extension 22 and the right arc-shaped extension 23 are both oriented toward the central axis of the slot body 21; when the thickness of the finished vane is 3.2 mm, the distance between the other end of the left arc-shaped extension 22 and the other end of the right arc-shaped extension 23 is 0.8-1.92 mm; the opening of the C-shaped groove 2 is oriented toward the suction cavity of the compressor cylinder, and when the vane structure is installed on the compressor cylinder When in the vane groove, if the opening of the C-shaped groove 2 is facing the suction chamber side of the cylinder (consistent with the working rotation direction of the compressor), it can ensure that the clearance of a single compression is minimized, thereby improving the energy efficiency ratio of the compressor; at the same time, due to the rotation of the rotating shaft, the rotation direction of the roller is driven from the opening of the C-shaped groove 2 toward the inner side of the C-shaped groove 2, which can more effectively bring the lubrication in the suction chamber into the groove of the C-shaped groove 2, providing lubrication for the rotation of the roller; the reverse installation side increases the clearance, which is not conducive to improving the energy efficiency of the compressor; the angle of the second angle B is 15°~46°, which is conducive to meeting the processing conditions of the first angle A.

[0042] Embodiment 2:

[0043] Based on the first embodiment, Figure 2-4As shown in Figures 6-8, when the thickness of the finished vane is 3.2 mm and the angle value range of the second angle B is between 15° and 46°, the second angle B is based on the total thickness center line of the finished vane and is adjusted according to the eccentricity Es of the shaft / crankshaft. The adjustment reference value can be calculated by inputting Arcsin (ratio of Es / R+r) on an electronic calculator, where R is the radius of the shaft / piston in the compressor cylinder (unit: mm); r is the radius of the roller in the compressor cylinder (unit: mm); Es is (shaft / crankshaft eccentricity, unit: mm);

[0044] The value of the second angle B must meet the following conditions: the angle of the second angle B < 180° minus the angle of the first angle A, the purpose of which is to ensure that: the angle of the first angle A + the angle of the second angle B < 180°, so that the remaining roller mounting groove on the finished sliding vane is a superior arc, further ensuring that the roller cannot fall out of the roller mounting groove during the operation of the compressor;

[0045] While ensuring that the opening width of the C-shaped groove 2 is within the range of 0.8 to 1.92 mm, and under the premise that the angle of the second angle B is ∠ the angle of the first angle A (i.e., the opening of the C-shaped groove 2 is always facing one side of the central axis of the groove body 21 rather than the exact center), the values ​​of the first angle A and the second angle B can be calculated according to the eccentricity of the compressor shaft (crankshaft) (generally between 1.0 and 6.5 mm), as follows (see also Figure 6-8 Example diagram of the width of the opening of the middle C-shaped groove 2, the angle values ​​of the first angle A and the second angle B):

[0046] like Figure 6 As shown, when the sum of the first angle A and the second angle B is 46.57°, the second angle B is 15°, the first angle A is 31.57°, and the width of the opening of the C-shaped groove 2 is 0.8 mm;

[0047] like Figure 7 As shown, when the sum of the first angle A and the second angle B is 115.45°, the second angle B is 40.45°, the first angle A is 75°, and the width of the opening of the C-shaped groove 2 is 1.76 mm;

[0048] like Figure 8 As shown, when the sum of the first angle A and the second angle B is 135.87°, the second angle B is 45.87°, the first angle A is 90°, and the width of the opening of the C-shaped groove 2 is 1.92 mm.

[0049] Embodiment three:

[0050] like Figure 1-5As shown, based on the first embodiment, a processing technology of a sliding plate structure includes the following steps:

[0051] S1. Slide rough blank processing: Process the rough blank hexahedron. After the processing, the T surface 4 and the S surface 5 on the slide rough blank form opposite surfaces, the U surface 6 and the V surface 7 form opposite surfaces, and a C-shaped groove 2 is processed on one of the remaining surfaces. That is, based on the flat substrate rough blank, a double-station double-end milling machine is used for mechanical processing to remove the processing allowance set by the substrate to obtain a standard hexahedron processing blank or a standard whole hexahedron is obtained by stamping and cutting.

[0052] Roughly grind the four sides. Based on the hexahedral processing blank, a double-station double-end surface grinder is used to flatten the outer four sides of the hexahedral processing blank after milling, providing an accurate clamping reference for subsequent processing.

[0053] Rough milling of the roller mounting groove is to stack and clamp several pieces of hexahedral blanks that have been roughly ground on four sides, so that each piece of the hexahedral blank that has been milled is further milled to obtain a formed rough milled roller mounting groove.

[0054] Slice cutting and forming: the entire hexahedral processing blank after milling is cut into individual slide rough blanks by laser cutting or water jet cutting technology (or other such cutting technology).

[0055] Processing T surface 4 and S surface 5: semi-fine grinding and fine grinding of T surface 4 and S surface 5. Use double-end surface grinder to semi-fine grind T surface 4 and S surface 5 first, and trim T surface 4 and S surface 5 while leaving machining allowance for fine grinding, so as to provide shape and position dimensional guarantee for subsequent fine grinding; then fine grinding is performed to make the workpiece thickness size and shape and position tolerance meet the design requirements.

[0056] Processing U surface 6 and V surface 7: Semi-fine grinding of U surface 6 and V surface 7, using a double-end surface grinder, further grinding and trimming the U surface 6 and V surface 7 of the rough slider blank that has been rough ground, trimming the U surface 6 and V surface 7 on the premise of leaving a machining allowance for fine grinding, providing shape and position dimensional guarantees for subsequent fine grinding, so that the remaining machining allowance can be finely ground later.

[0057] S2. Processing the inner surface and V-surface 7 of the C-shaped groove 2 of the rough slide blank: Rough and fine processing of the inner surface of the C-shaped groove 2 and fine processing of the V-surface 7 of the rough slide blank; a high-speed and high-precision grinder with a multi-power head configuration is used, which is equipped with a precision milling cutter (such as a spherical milling cutter or a spherical grinding head, etc., which can process a C-shaped cylindrical surface), a CNB electroplated grinding head end face grinding wheel (only processes the V-surface 7; the C-shaped groove 2 after rough processing is subjected to rough grinding or rough milling to remove the cutting marks and excess processing allowance, and the processing basis is confirmed for fine grinding, and a fine grinding processing allowance a1 of 0.005-0.03mm is reserved), and the processing of removing the cutting marks and excess processing allowance is performed. The cutting tool can be a milling cutter or a grinding head, and the milling cutter can be any one of a spherical milling cutter, a grinding head or a spherical grinding head, or a spherical milling cutter and a spherical grinding head are used in combination; the 0.005-0.03mm machining allowance 1 left by rough grinding or rough milling is ground and then polished in situ, so that the size, shape and position tolerance and surface roughness of the C-shaped groove 2 meet the design requirements; after the fine machining of the C-shaped groove 2 is completed, the clamping is kept unchanged, and the end face grinding of the V-face 7 is performed with an end face grinding wheel, so that the cylindrical surface of the C-shaped groove 2 and the basic end face of the V-face 7 can be processed in succession with one machine tool with one clamping, thereby ensuring that the verticality of the cylindrical surface of the C-shaped groove 2 and the end face of the V-face 7 meets the design requirements.

[0058] S3. Processing U surface 6: Fine grinding U surface 6, using a high-precision grinder with V surface 7 as the clamping reference, fine grinding the processing allowance of U surface 6, further ensuring that the processing accuracy, form and position tolerances and surface roughness meet the design requirements, that is, the height dimensions and parallelism of U surface 6 and V surface 7 meet the design requirements.

[0059] S4. Clean the chamfers of the four surfaces, T surface 4, S surface 5, U surface 6, and V surface 7, and remove the processing burrs to obtain the finished slider. Use a processing brush, such as a nylon fiber coated brush, to remove the remaining burrs on the edges where the surfaces intersect after fine grinding and form a fine fillet of no more than 0.1.

[0060] S5. Grouping: In order to match the height and width of the vane with the vane installation groove placed high on the cylinder to achieve high-pressure sealing, the thickness of the finished vane that has been processed is measured (a micrometer can be used for measurement), and the measurement value of 0.002mm is used as the interval standard for screening and grouping, so that it can be selected and installed in combination with the size of the cylinder vane groove.

[0061] The grouped slides are inspected for shape and position tolerance and appearance, and qualified products are placed in groups.

[0062] The finished slides that pass the inspection are immersed in oil and placed one by one on a special tray.

[0063] The pallet with the rust-proofed slides is wrapped in plastic bags and packed into special cartons.

[0064] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A sliding plate structure, characterized in that: The invention comprises a sliding plate body (1), a side wall of the sliding plate body (1) is provided with a C-shaped groove (2), the center of the C-shaped groove (2) is located on the thickness line of the sliding plate body (1), and the opening of the C-shaped groove (2) faces one side of the thickness center line of the sliding plate body (1), and the C-shaped groove (2) comprises a groove body (21), the groove body (21) is provided on a side wall of the sliding plate body (1), and the two sides of the opening of the groove body (21) are respectively provided with a left arc-shaped extension part (22) and a right arc-shaped extension part (23). 3), one end of the left arc-shaped extension portion (22) and one end of the right arc-shaped extension portion (23) are both fixedly arranged on the slide body (1), the angle between the other end of the left arc-shaped extension portion (22) and the thickness center line of the slide body (1) is a first angle (A), the angle between the other end of the right arc-shaped extension portion (23) and the thickness center line of the slide body (1) is a second angle (B), and the sum of the first angle (A) and the second angle (B) is less than 180°.

2. A sliding plate structure according to claim 1, characterized in that: The length direction of the groove body (21) is the same as the length direction of the thickness center line of the slide body (1); the centers of the left arc-shaped extension part (22) and the right arc-shaped extension part (23) are both located on the central axis of the groove body (21); and the arc-shaped openings of the left arc-shaped extension part (22) and the right arc-shaped extension part (23) are both oriented in the direction of the central axis of the groove body (21).

3. A sliding plate structure according to claim 1, characterized in that: The distance between the other end of the left arc-shaped extension portion (22) and the other end of the right arc-shaped extension portion (23) is 0.8-1.92 mm.

4. A sliding plate structure according to claim 1, characterized in that: The second angle (B) is between 15° and 46°.

5. A sliding plate structure according to claim 1, characterized in that: The slide body (1), the groove body (21), the left arc-shaped extension portion (22) and the right arc-shaped extension portion (23) are an integrally formed structure.

6. A processing technology for the sliding plate structure according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: machining of the rough blank of the slide, after which the T surface (4) and the S surface (5) of the rough blank of the slide form opposite surfaces, the U surface (6) and the V surface (7) form opposite surfaces, and a C-shaped groove (2) is machined on one of the remaining surfaces; S2: Processing the inner surface of the C-shaped groove (2) and the V-surface (7) of the rough slide blank. The inner surface of the C-shaped groove (2) of the rough slide blank is removed by a machining tool to remove the cutting marks and excess machining allowance, and a machining allowance a1 is left; Processing the inner surface of the C-shaped groove (2), removing the machining allowance a1 and then polishing it in situ; After the inner surface of the C-shaped groove (2) is machined, the end surface of the V-surface (7) is machined while the clamping is maintained unchanged, so that the dimensional accuracy of the C-shaped groove (2) and the V-surface (7) and the verticality therebetween meet the design requirements; S3: machining the U surface (6) with the V surface (7) as a reference, so that the height dimensions and parallelism of the U surface (6) and the V surface (7) meet the design requirements; S4: Clean the chamfers of the four surfaces, namely, the T surface (4), the S surface (5), the U surface (6), and the V surface (7), and remove the machining burrs to obtain a finished slide; S5: Grouping: measuring the thickness of the finished slides after processing, and screening and grouping them according to the measurement value of 0.002mm as the interval standard.

7. A process for processing a sliding plate structure according to claim 6, characterized in that: The blank manufacturing in S1 includes the following steps: Processing blank hexahedron, based on the blank of flat substrate, adopt double-station double-end milling machine to mechanically process and remove the processing allowance of substrate to obtain standard hexahedron processing blank or obtain standard whole hexahedron by punching and cutting; Grinding four sides: Based on the hexahedron processed blank, a double-station double-end surface grinder is used to grind the outer four sides of the hexahedron processed blank after milling. Milling the roller mounting groove, stacking and clamping several pieces of hexahedral blanks that have been ground and four-sided, so that each piece of the hexahedral blank that has been milled is further milled to obtain a rough-milled roller mounting groove; Slice cutting and forming: the whole hexahedral processing blank after milling is cut into individual slide rough blanks by a slitting process; Processing the T surface (4) and the S surface (5) to ensure that the thickness, size and shape and position tolerances of the workpiece meet the design requirements; The U surface (6) and the V surface (7) are processed so that the thickness and processing allowance of the workpiece meet the design requirements.

8. A process for processing a sliding plate structure as claimed in claim 6, characterized in that: The finishing allowance after rough grinding or rough milling of the inner surface of the C-shaped groove (2) in S2 is 0.005 to 0.03 mm.

9. A process for processing a sliding plate structure as claimed in claim 6, characterized in that: In S2, the machining tool for removing cutting marks and excess machining allowance is a spherical milling cutter or a spherical grinding head, or a combination of a spherical milling cutter and a spherical grinding head.

10. The processing technology of a sliding plate structure according to claim 7, characterized in that: The slitting process is one of laser cutting, water jet cutting or high-speed wire cutting.

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