Hydraulic skiving and rolling tool

Abstract

The utility model discloses a hydraulic scraping and rolling cutter belongs to the oil cylinder production and manufacturing technical field, a hydraulic scraping and rolling cutter, and the hydraulic scraping and rolling cutter is composed of cutter body, cutting part, rolling part, hydraulic system part, adjustment part, supporting part, and the cutting part includes rough cutter head, rough boring cutter, fine cutter seat, fine cutter blade, and the rolling part includes raceway, retainer, roller, roller expansion and contraction piston, and the hydraulic system part includes oil inlet pipe, fine cutter expansion and contraction piston, and the adjustment part includes fine cutter seat, fine cutter adjusting stud, precision locking nut, and the supporting part includes fine cutter seat anti -rotation key, supporting ebonite strip. It can rely on the mechanical extrusion mode, has improved the precision, straightness of oil cylinder pipe inner wall working operation, has improved the hardness and strength of oil cylinder pipe inner wall, has improved the smoothness of oil cylinder pipe inner wall, has the high processing efficiency, and the stability is stronger advantage.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder manufacturing technology, and more specifically, to a hydraulic scraping and burnishing knife. Background Technology

[0002] Machining the inner wall of the cylinder tube is a critical process in hydraulic cylinder manufacturing, directly affecting sealing performance, wear resistance, and service life. Traditional machining processes involve sequential roughing, finishing, and surface strengthening using cutting tools.

[0003] Currently, the commonly used tool for machining the inner wall of hydraulic cylinder tubes is the pneumatic scraping and burnishing cutter. However, when using the pneumatic scraping and burnishing cutter, there are disadvantages such as low machining accuracy, low straightness, low surface finish, low machining efficiency, and poor stability.

[0004] Therefore, in view of this, we have studied and improved the existing structure to provide a hydraulic scraping and burnishing tool, in order to achieve a more practical purpose. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide a hydraulic scraping and burnishing knife, which can improve the accuracy and straightness of the machining of the inner wall of the cylinder tube, increase the hardness and strength of the inner wall of the cylinder tube, and improve the smoothness of the inner wall of the cylinder tube by means of mechanical extrusion. It has the advantages of high processing efficiency and strong stability.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A hydraulic scraping and burnishing cutter, comprising a cutter body, a cutting part, a burning part, a hydraulic system part, an adjustment part, and a support part;

[0010] The cutting part includes a roughing cutter head mounted at the front end of the tool body, a roughing boring tool mounted on the roughing cutter head, an adjusting seat mounted behind the roughing cutter head, and a finishing insert mounted on the adjusting seat;

[0011] The rolling section includes a raceway installed in the middle of the side end of the mandrel, a retainer located above the raceway, rollers installed inside the retainer, a bearing housing connected to the retainer, and a mandrel installed inside the retainer via the bearing housing;

[0012] The hydraulic system includes an oil inlet pipe connected to the rear end of the mandrel's inner cavity and a precision cutting tool expansion and contraction piston installed at the middle of the front end of the mandrel;

[0013] The adjustment section includes a finishing cutter holder installed at the front end of the coarse cutter head, a finishing cutter adjusting stud passing through the middle of the finishing cutter holder, and a precision locking nut threadedly connected to the finishing cutter adjusting stud in the middle.

[0014] The support components include a precision cutter holder anti-rotation key installed between the outer end face of the mandrel and the inner side of the adjusting seat, and a support bakelite strip installed on the outside of the cutter body.

[0015] Furthermore, the blade body is a steel structure formed of high-precision steel or tool steel;

[0016] The mandrel is a solid shaft structure.

[0017] Furthermore, the roughing tool is mounted on the roughing cutter head by bolts and nuts;

[0018] The precision cutting blade is mounted on the adjusting seat by bolts and nuts.

[0019] Furthermore, a bearing housing is mounted on the outside of the mandrel, and the bearing is installed inside the bearing housing;

[0020] The roller expansion piston is located below the bearing housing and the tray of the retainer.

[0021] Furthermore, a fine cutter adjustment dial is installed inside the coarse cutter disc.

[0022] Furthermore, expansion wedges are fixedly installed on both sides of the middle part of the precision cutting tool adjusting stud.

[0023] Furthermore, a sliding copper sleeve is provided on the outside of the precision cutting tool expansion and contraction piston.

[0024] 3. Beneficial effects

[0025] Compared with existing technologies, the advantages of this utility model are:

[0026] ① In this solution, the hydraulic scraping and burnishing cutter consists of a tool part, a cutting part, a burning part, a hydraulic system part, an adjustment part, and a support part. Through the cooperation of these six parts and the use of mechanical extrusion, the metal surface is plastically flowed and filled into the valleys, thereby reducing the surface roughness value of the metal surface layer of the cylinder tube and causing the surface structure to work harden and the grains to become finer, forming a dense fibrous structure. This improves the accuracy and straightness of the machining operation of the cylinder tube inner wall, and increases the hardness and strength of the cylinder tube inner wall.

[0027] During operation, it operates in a non-cutting manner, obtaining a mirror-like metal surface through the principle of mechanical extrusion, thus improving the smoothness of the inner wall of the cylinder tube. At the same time, this hydraulic scraping and burnishing knife also has the advantages of high processing efficiency and strong stability. Attached Figure Description

[0028] Figure 1This is a schematic diagram of the hydraulic scraping and burnishing knife in this utility model;

[0029] Figure 2 This is a schematic diagram of the structure of the cutting tool, the cutting part, and the adjusting part in this utility model;

[0030] Figure 3 This is a schematic diagram of the structure of the rolling part, hydraulic system part and support part in this utility model;

[0031] Figure 4 In this utility model Figure 3 A magnified structural diagram of part A in the middle.

[0032] Explanation of the labels in the diagram:

[0033] 1. Dial;

[0034] 2. Blade body; 201. Roughing blade disc; 202. Finishing blade holder;

[0035] 3. Expansion wedge; 4. Anti-rotation key for finishing tool holder; 5. Raceway; 6. Roller; 7. Retainer; 8. Bearing housing; 9. Bearing; 10. Support bakelite strip; 11. Precision lock nut; 12. Mandrel; 13. Finishing tool holder; 14. Rough boring tool; 15. Finishing tool adjusting stud; 16. Finishing tool insert; 17. Roller expansion piston; 18. Finishing tool expansion piston; 19. Sliding copper sleeve; 20. Oil inlet pipe. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0037] Example:

[0038] Please see Figure 1 - Figure 4 A hydraulic scraping and burnishing cutter, comprising a cutter body 2, a cutting part, a burning part, a hydraulic system part, an adjustment part, and a support part;

[0039] The cutting tool part includes a cutting tool body 2 and a spindle 12 mounted inside the cutting tool body 2 via a bearing 9.

[0040] The cutter body 2 is the main structure of the cutter, and the spindle 12 is the support shaft of the cutter;

[0041] The cutting part includes a roughing cutter head 201 mounted on the front end of the cutter body 2, a roughing boring tool 14 mounted on the roughing cutter head 201, an adjusting seat 202 mounted behind the roughing cutter head 201, and a finishing insert 16 mounted on the adjusting seat 202.

[0042] The roughing cutter head 201, in conjunction with the roughing boring bar 14, is used for rough machining of the workpiece to remove most of the excess material. The adjusting seat 202, in conjunction with the finishing insert 16, is used for finishing of the workpiece to ensure the accuracy and roughness of the machined surface.

[0043] The rolling section includes a raceway 5 installed at the middle of the side end of the mandrel 12, a retainer 7 located above the raceway 5, a roller 6 installed inside the retainer 7, a bearing seat 8 connected to the retainer 7, and a mandrel 12 installed inside the retainer 7 via the bearing seat 8.

[0044] The roller 6 rolls on the raceway 5 to perform rolling processing on the workpiece surface, making the workpiece surface smoother and improving its surface hardness and wear resistance. In conjunction with the roller expansion and contraction piston 17, the rolling pressure on the workpiece surface can be adjusted.

[0045] The hydraulic system includes an oil inlet pipe 20 connected to the rear end of the inner cavity of the mandrel 12, and a precision tool expansion and contraction piston 18 installed at the middle of the front end of the mandrel 12;

[0046] Hydraulic oil enters the inner cavity of the mandrel 12 through the oil inlet pipe 20, providing power for the expansion, contraction and rolling of the cutting tool. Under the action of the hydraulic oil, the cutting tool expansion piston 18 pushes the push rod, causing the cutting tool 16 to generate radial displacement, thereby expanding and retracting the cutting tool 16 to adapt to different machining dimensions and requirements.

[0047] The adjustment section includes a finishing cutter holder 13 installed at the front end of the coarse cutter head 201, a finishing cutter adjusting stud 15 passing through the middle of the finishing cutter holder 13, and a precision locking nut 11 threadedly connected to the finishing cutter adjusting stud 15 in the middle.

[0048] By rotating the precision tool adjusting stud 15, the position and cutting dimensions of the precision tool can be precisely adjusted to ensure machining accuracy. The precision locking nut 11 is used to fix the precision tool adjusting stud 15 to prevent it from loosening during machining and to ensure the stability of the tool dimensions.

[0049] The support components include a precision tool holder anti-rotation key 4 installed between the outer end face of the spindle 12 and the inner side of the adjusting seat 202, and a support bakelite strip 10 installed on the outside of the tool body 2.

[0050] The anti-rotation key 4 of the precision tool holder can prevent the adjustment seat 202 from rotating during the cutting process, ensuring the cutting position accuracy of the precision tool. When the tool is retracted, the supporting bakelite strip 10 plays a supporting role, preventing the tool from deforming or being damaged due to its own weight or other external forces.

[0051] See Figure 1 , Figure 2 Specifically, the blade body 2 is a steel structure made of high-quality steel or tool steel;

[0052] The cutter body 2 has good rigidity and wear resistance, and can withstand the huge pressure and impact during the cutting process.

[0053] The spindle 12 is a solid shaft structure.

[0054] The spindle 12 is located inside the cutter body 2 to ensure the stability and coaxiality of the cutter body 2 during rotation.

[0055] See Figure 1 , Figure 2 Specifically, the roughing tool 14 is mounted on the roughing tool disc 201 by bolts and nuts;

[0056] The rough boring tool 14 is replaceable, and its inserts typically have a large cutting edge width and strong cutting ability, enabling rapid material removal.

[0057] The precision blade 16 is mounted on the adjusting seat 202 by bolts and nuts.

[0058] Replacing the cutting blade with the precision insert 16 will make the cutting edge sharper and the precision higher, enabling micro-cutting.

[0059] See Figure 3 Specifically, a bearing housing 8 is mounted on the outside of the spindle 12, and the bearing 9 is installed inside the bearing housing 8;

[0060] The roller expansion piston 17 is located below the tray of the bearing housing 8 and the retainer 7.

[0061] The hydraulic oil pressure pushes the roller expansion piston 17, causing the roller 6 to generate radial displacement on the raceway 5, thereby adjusting the rolling pressure of the roller 6 on the workpiece surface.

[0062] See Figure 1 , Figure 2 Specifically, the coarse cutter disc 201 has a fine cutter adjustment dial 1 installed inside.

[0063] The scale 1 makes it easy to distinguish the scraping angle of the blade 2.

[0064] Specifically, the precision tool adjusting stud 15 has expansion wedges 3 fixedly installed on both sides of the middle part.

[0065] The stability of the precision tool adjusting stud 15 during rotation is improved by using the expansion wedge block 3.

[0066] See Figure 3 Specifically, the precision cutting expansion piston 18 is externally provided with a sliding copper sleeve 19.

[0067] Working principle:

[0068] A hydraulic scraping burnishing cutter consists of a cutting tool section, a cutting section, a burnishing section, a hydraulic system section, an adjustment section, and a support section.

[0069] In the cutting tool section, the tool body 2 is the main structure of the cutting tool, and the spindle 12 is the support shaft of the cutting tool.

[0070] In the cutting section, the roughing cutter head 201, in conjunction with the roughing boring bar 14, is used to rough machine the workpiece and remove most of the excess material. The adjusting seat 202, in conjunction with the finishing insert 16, is used to finish the workpiece to ensure the accuracy and roughness of the machined surface.

[0071] In the rolling section, the roller 6 rolls on the raceway 5 to roll the workpiece surface, making the workpiece surface smoother and improving its surface hardness and wear resistance. In conjunction with the roller expansion and contraction piston 17, the rolling pressure on the workpiece surface can be adjusted.

[0072] In the hydraulic system, hydraulic oil enters the inner cavity of the mandrel 12 through the oil inlet pipe 20, providing power for the expansion, contraction and rolling of the cutting tool. Under the action of the hydraulic oil, the cutting tool expansion piston 18 pushes the push rod, causing the cutting tool 16 to generate radial displacement, thereby expanding and retracting the cutting tool 16 to adapt to different machining dimensions and requirements.

[0073] In the adjustment section, the position and cutting dimensions of the precision cutter can be precisely adjusted by rotating the precision cutter adjustment stud 15 to ensure machining accuracy. The precision locking nut 11 is used to fix the precision cutter adjustment stud 15 to prevent it from loosening during machining and to ensure the stability of the tool dimensions.

[0074] In the support section, the anti-rotation key 4 of the precision tool holder can prevent the adjustment seat 202 from rotating during the cutting process, ensuring the cutting position accuracy of the precision tool. When the tool is retracted, the support bakelite strip 10 plays a supporting role, preventing the tool from deforming or being damaged due to its own weight or other external forces.

[0075] Through the collaboration of six parts and the use of mechanical extrusion, the metal surface is plastically flowed and filled into the valleys, thereby reducing the surface roughness value of the metal surface layer of the cylinder tube and causing the surface structure to be cold-worked and the grains to be finer, forming a dense fibrous structure. This improves the precision and straightness of the machining operation of the cylinder tube inner wall, and increases the hardness and strength of the cylinder tube inner wall.

[0076] During operation, it operates in a non-cutting manner, obtaining a mirror-like metal surface through the principle of mechanical extrusion, thus improving the smoothness of the inner wall of the cylinder tube. At the same time, this hydraulic scraping and burnishing knife also has the advantages of high processing efficiency and strong stability.

[0077] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A hydraulic scraping and burnishing knife, characterized in that: The hydraulic scraping and burnishing cutter consists of a cutter body (2), a cutting part, a burnishing part, a hydraulic system part, an adjustment part, and a support part; The cutting part includes a roughing cutter head (201) mounted on the front end of the cutter body (2), a roughing boring tool (14) mounted on the roughing cutter head (201), an adjusting seat (202) mounted behind the roughing cutter head (201), and a finishing insert (16) mounted on the adjusting seat (202). The rolling section includes a raceway (5) installed in the middle of the side end of the mandrel (12), a retainer (7) located above the raceway (5), a roller (6) installed inside the retainer (7), the roller (6) cooperating with the roller expansion piston (17) to adjust the rolling pressure on the workpiece surface, a bearing seat (8) connected to the retainer (7), and a mandrel (12) installed inside the retainer (7) through the bearing seat (8). The hydraulic system includes an oil inlet pipe (20) connected to the rear end of the inner cavity of the mandrel (12) and a precision tool expansion and contraction piston (18) installed in the middle of the front end of the mandrel (12). The adjustment part includes a finishing cutter holder (13) installed at the front end of the coarse cutter head (201), a finishing cutter adjusting stud (15) passing through the middle of the finishing cutter holder (13), and a precision locking nut (11) threadedly connected to the finishing cutter adjusting stud (15) in the middle. The support part includes a precision tool holder anti-rotation key (4) installed between the outer end face of the mandrel (12) and the inner side of the adjusting seat (202), and a support bakelite strip (10) installed on the outside of the tool body (2).

2. The hydraulic scraping and burnishing knife according to claim 1, characterized in that: The blade body (2) is a steel structure made of high-quality steel or tool steel; The mandrel (12) is a solid shaft structure.

3. The hydraulic scraping and burnishing knife according to claim 1, characterized in that: The rough boring tool (14) is mounted on the roughing tool disc (201) by bolts and nuts; The precision blade (16) is mounted on the adjusting seat (202) by bolts and nuts.

4. The hydraulic scraping and burnishing knife according to claim 1, characterized in that: The mandrel (12) is externally mounted with a bearing housing (8), and the bearing (9) is installed inside the bearing housing (8); The roller expansion piston (17) is located below the bearing housing (8) and the tray of the retainer (7).

5. A hydraulic scraping and burnishing cutter according to claim 1, characterized in that: The coarse cutter disc (201) is equipped with a fine cutter adjustment dial (1).

6. A hydraulic scraping and burnishing knife according to claim 1, characterized in that: The precision knife adjusting stud (15) has expansion wedges (3) fixedly installed on both sides of the middle part.

7. A hydraulic scraping and burnishing cutter according to claim 1, characterized in that: The precision cutting piston (18) is provided with a sliding copper sleeve (19) on its outside.

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