Machining method of stand column and stand column

Abstract

The invention discloses a stand column machining method which is used for machining a three-telescopic stand column without a bottom valve, and the stand column machining method comprises the following machining steps of machining an outer cylinder body, machining a second-stage cylinder body, machining a third-stage cylinder body, machining a movable column, machining a connecting rod body and machining a piston and a movable plunger piston. By adopting the method disclosed by the invention, the following technical effects of improving the machining efficiency, reducing the machining time and ensuring the machining precision on the machining of the three telescopic upright posts without the bottom valve can be achieved.

Description

Technical Field

[0001] This patent relates to the technical field of equipment and component processing, and specifically to a column processing method and a column. Background Art

[0002] Hydraulic support is a structural support device used to control the mine pressure of the coal mining face, and is the core equipment of the fully mechanized coal mining face. The mine pressure of the mining face acts on the hydraulic support in the form of external load. The column is the key load-bearing component of the hydraulic support, which bears the load of the fully mechanized mining face roof acting on the hydraulic support and transmits it to the base. The hydraulic support can safely and reliably support and control the entire mining face, and the structure and reliability of the column play a key role.

[0003] Currently, the most common hydraulic supports are single and double telescopic columns, but the telescopic properties of these two types of columns are relatively small, and their telescopic ratio is far from meeting the requirements of ultra-large cross-border mining supports. In addition, the pressure in the second-stage cylinder is relatively high during use, which can easily cause cylinder expansion.

[0004] The three-telescopic column without bottom valve used in the prior art is composed of an outer cylinder, a secondary cylinder, a tertiary cylinder, a live column, a guide sleeve, a connecting rod, a piston, etc. The three-telescopic column without bottom valve meets the use requirements of super-large cross-border mining supports, and uses a bottom-valve-free isobaric structure in the tertiary cylinder to greatly reduce the pressure in the tertiary cylinder to avoid cylinder expansion. At the same time, the structure without bottom valve saves the cost of the bottom valve and avoids the pressure holding and leakage of the bottom valve, reduces the column failure caused by the bottom valve problem, and extends the service life of the column.

[0005] However, due to the complex structure of the bottomless valve three-telescopic column, high technical indicators such as coaxiality and roughness are required. For example, the connecting rod is relatively long, and the coaxiality and straightness of the rod head, rod middle and rod tail are required to be high. In the existing processing methods, the processing is difficult and the processing procedures are relatively complicated. The processing often exceeds the tolerance, and the straightness cannot be guaranteed. After the processing errors of various parts accumulate, it will cause jamming or guide sleeve static seal grinding during assembly, reducing the service life of the column. Summary of the invention

[0006] The purpose of the present application is to provide a column processing method and a column, which can meet the coaxiality and assembly coaxiality requirements of the components of the three-telescopic column without a bottom valve, and can reduce the processing time, improve the efficiency and ensure the processing accuracy in the overall processing process and the sub-process of the column and its components, thereby ensuring the smooth assembly of the column.

[0007] The technical solution adopted by the present invention to solve the technical problem is: a column processing method and a column, characterized in that: the column processing method includes the following processing steps, processing steps of the outer cylinder body, processing steps of the secondary cylinder body, processing steps of the tertiary cylinder body, processing steps of the piston, processing steps of the connecting rod body, and processing steps of the piston and the piston.

[0008] Optionally, the outer cylinder body comprises an outer cylinder bottom and an outer cylinder barrel, and the processing steps of the outer cylinder body include the following sub-steps, 11) The processing steps of the outer cylinder bottom: ① blanking; ② forging blank; ③ quenching and tempering treatment; ④ surface sandblasting treatment; ⑤ turning the end face and large outer circle of the blank; ⑥ turning the outer circle stop and inner hole cone; ⑦ drilling; ⑧ copper plating the inner surface and the liquid through hole; 12) The processing steps of the outer cylinder are: ① blanking; ② turning the two end faces and outer chamfering; ③ rough boring the inner hole; ④ quenching and tempering; ⑤ welding the joint, lifting ring and accessories; ⑥ semi-finishing pushing the inner hole; ⑦ heat aging; ⑧ surface shot peening; ⑨ scraping and rolling the inner hole; ⑩ frame position; The inner hole is molten copper; Scrape and polish the inner hole; Repair rack position; Fine turning of cylinder mouth stop and thread; In-vehicle taper and U-shaped groove; drilling; The cylinder mouth and liquid hole are copper plated; the processing step of scraping and rolling the inner hole can be replaced by the processing step of boring the inner hole and honing the inner hole; 13) Processing steps for assembling the outer cylinder body: ① Weld the outer cylinder bottom and the outer cylinder barrel; ② Weld the joints and the liquid pipe; ③ Weld the liquid pipe assembly and accessories to the outer cylinder body; ④ Grind the weld until it is smooth.

[0009] Optionally, the secondary cylinder body is composed of a secondary cylinder bottom and a secondary cylinder barrel; the processing steps of the secondary cylinder body include the following sub-steps, 21) the processing steps of the secondary cylinder bottom: ① blanking; ② forging blank; ③ turning end face; ④ rough turning step circle; ⑤ drilling inner hole and inner hole stop; ⑥ turning, rough turning outer circle stop and transition fillet; ⑦ quenching and tempering treatment; ⑧ fine turning inner hole and inner hole stop; ⑨ turning inner hole groove; ⑩ turning step circle; Bevel and inner stop; Slot milling; Drilling the bottom hole; Tapping thread; Copper plating; 22) The processing steps of the secondary cylinder are as follows: ① cutting; ② forging blank; ③ turning the stopper and chamfering of the hole at both ends; ④ turning the step circle and chamfering of both end faces; ⑤ rough boring of the hole; ⑥ quenching and tempering treatment; ⑦ semi-finish boring of the hole; ⑧ scraping and rolling of the hole; ⑨ turning the frame position; ⑩ melting copper in the hole; Scrape and polish the inner hole; Taking the inner hole as the reference, the outer circle and step circle of the cladding section are machined; External cylindrical laser cladding; Honing of inner holes; Turning end faces; Turn the outer circle and groove of the cladding section; Car step circle and bevel; Drilling deep holes; Drill hole stop; Drill the piston hole; Turn the stopper and thread of the hole; Turning the conical surface of the hole; The deep hole of welding is blocked; the processing link of scraping and rolling the inner hole can be replaced by the processing link of boring the inner hole; 23) The processing steps for assembling the secondary cylinder body are as follows: ① welding the secondary cylinder bottom and the secondary cylinder barrel; ② keeping warm and cooling slowly after welding; ③ turning the outer circle of the flat weld, repairing chamfers and bayonet, and turning the flat weld; ④ turning the step circle, the outer circle and groove of the piston section; ⑤ grinding the outer circle and polishing; ⑥ copper plating the cylinder mouth and piston section.

[0010] Optionally, the three-stage cylinder body includes a three-stage cylinder bottom and a three-stage cylinder barrel; the processing steps of the three-stage cylinder body include the following sub-steps, 31) The processing steps of the three-stage cylinder bottom: ① blanking; ② forging blanks; ③ turning end faces, rough turning step circles and turning chamfers; ④ drilling and turning inner holes and stoppers; ⑤ turning heads, rough turning outer stoppers and chamfers; ⑥ quenching and tempering treatment; ⑦ turning end faces, rounding outer circle bayonet; ⑧ turning step circles and turning U-shaped grooves; ⑨ milling grooves and tapping threads; ⑩ copper plating of inner surfaces and liquid holes; 32) The processing steps of the three-stage cylinder (13) are: ① cutting; ② forging the blank; ③ turning the stopper of the inner hole at both ends and chamfering the hole; ④ turning the step circle and chamfering the two end faces; ⑤ rough boring the inner hole; ⑥ quenching and tempering treatment; ⑦ semi-finishing boring the inner hole; ⑧ scraping and rolling the inner hole; ⑨ turning the frame position; ⑩ melting copper in the inner hole; Scrape and polish the inner hole; Taking the inner hole as the reference, the outer circle and step circle of the cladding section are machined; External cylindrical laser cladding; Honing of inner holes; Turn the end face, outer circle and groove of the cladding section; Car step circle and bevel; Drilling deep holes; Drill hole stop; Drill the piston hole; Turn the stopper and thread of the hole; Turning the conical surface of the hole; The deep hole of welding is blocked; the processing link of scraping and rolling the inner hole can be replaced by the processing link of boring the inner hole; 33) The processing steps for assembling the three-stage cylinder body (3) are as follows: ① welding the three-stage cylinder bottom (12) and the three-stage cylinder barrel (13); ② grinding the weld to make it smooth; ③ turning the weld to make it smooth; ④ turning the inner hole and stopper; ⑤ turning the step circle, the outer circle and the groove of the piston section; ⑥ grinding the outer circle and polishing; ⑦ copper plating the cylinder mouth and the piston section.

[0011] Optionally, the piston includes a piston tube and a piston head; the processing steps of the piston include the following sub-steps, 41) the processing steps of the piston tube: ① blanking; ② turning the two end faces and the inner hole stop; ③ rough turning the outer circle step and chamfer; ④ quenching and tempering treatment; ⑤ rough boring the inner hole; ⑥ repairing the outer circle chamfers at both ends; ⑦ scraping and rolling the inner hole; ⑧ turning two racks; ⑨ turning the cylinder bottom stop and groove; ⑩ turning the cylinder mouth; 42) The processing steps of the movable column head are: ① cutting; ② clamping the outer circle, turning the end face, rough turning the large outer circle and the step circle; ③ rough turning the step circle and rough turning the ball head; ④ quenching and tempering treatment; ⑤ turning the end face, turning the outer circle, stopper, and groove; ⑥ drilling; ⑦ clamping the outer circle, turning the step circle, and turning the ball head; ⑧ drilling and tapping; 43) The processing steps for assembling the piston are as follows: ① welding the piston tube and piston head; ② turning the outer circle of the plated section; ③ finishing the outer circle and outer circle groove of the piston section; ④ drilling and expanding the hole; ⑤ rough and fine grinding the outer circle; ⑥ chrome plating.

[0012] Optionally, the processing steps of the connecting rod body are: ① cutting; ② clamping the outer circle, turning the end face, and roughly turning the step circle; ③ turning around and roughly turning each step circle; ④ quenching and tempering treatment; ⑤ grinding the center holes at both ends and rounding the process clamping mouth; ⑥ clamping the process step circle and turning two racks; ⑦ drilling a deep hole; ⑧ grinding the center hole; ⑨ clamping the step circle and turning the chamfer at the hole mouth; ⑩ drilling the center hole, fine turning the large outer circle and the step circle, and turning the groove; Thread turning; Turn the stopper and chamfer of the hole; drilling; Rough and fine grinding of outer circle; Chrome-plated surface.

[0013] The processing steps of the piston and the piston are as follows: ① cutting; ② clamping the outer circle and turning the end face; ③ rough turning the outer circle and turning the step circle; ④ drilling and turning the inner hole; ⑤ turning the head, clamping the outer circle and turning the end face; ⑥ turning the outer circle flat and turning the inner hole stop; ⑦ quenching and tempering treatment; ⑧ supporting the inner hole and turning the end face; ⑨ turning the outer circle larger; ⑩ turning the inner hole stop; Turn around, align the step circle, and turn the end face; Turn the outer circle and chamfer the hole; Drilling the bottom hole; The surface is copper plated or zinc plated.

[0014] The present application also provides a column, which is a column obtained by a column processing method using the aforementioned processing steps. The column processing method provided by the present application can achieve the following technical effects for the processing of the three telescopic columns of the bottomless valve, and can meet various detailed requirements of the processing method for the coaxiality and assembly coaxiality requirements of the components of the three telescopic columns of the bottomless valve, ensure the coaxiality requirements and other precision and requirements of the components of the column, and ensure the smooth assembly of the column, that is, improve the processing efficiency, reduce the processing time, and ensure the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 It is a structural schematic diagram of an outer cylinder body of a column processing method provided by an embodiment of the present invention;

[0017] Figure 2 It is a structural schematic diagram of a secondary cylinder of a column processing method provided by an embodiment of the present invention;

[0018] Figure 3 It is a structural schematic diagram of a three-stage cylinder body of a column processing method provided by an embodiment of the present invention;

[0019] Figure 4 It is a structural schematic diagram of a movable column in a column processing method provided by an embodiment of the present invention;

[0020] Figure 5 It is a structural schematic diagram of a connecting rod body of a column processing method provided by an embodiment of the present invention;

[0021] Figure 6 It is a structural schematic diagram of a piston of a column processing method provided by an embodiment of the present invention;

[0022] Figure 7 It is a structural schematic diagram of a piston column of a column processing method provided by an embodiment of the present invention;

[0023] Figure 8 It is a structural schematic diagram of an outer cylinder bottom of a column processing method provided by an embodiment of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of an outer cylinder of a column processing method provided by an embodiment of the present invention;

[0025] Fig.10 A schematic structural diagram of a secondary cylinder bottom of a column processing method provided by an embodiment of the invention;

[0026] Fig.11 It is a structural schematic diagram of a secondary cylinder of a column processing method provided by an embodiment of the present invention;

[0027] Fig.12 It is a structural schematic diagram of a three-stage cylinder bottom of a column processing method provided by an embodiment of the present invention;

[0028] Fig.13 It is a structural schematic diagram of a three-stage cylinder of a column processing method provided by an embodiment of the present invention;

[0029] Fig.14 It is a structural schematic diagram of a plunger tube of a column processing method provided by an embodiment of the present invention;

[0030] Fig.15 It is a structural schematic diagram of a movable column head in a column processing method provided by an embodiment of the present invention.

[0031] Figure numerals: 1. outer cylinder body; 2. secondary cylinder body; 3. tertiary cylinder body; 4. piston; 5. connecting rod body; 6. piston; 7. piston; 8. outer cylinder bottom; 9. outer cylinder barrel; 10. secondary cylinder bottom; 11. secondary cylinder barrel; 12. tertiary cylinder bottom; 13. tertiary cylinder barrel; 14. piston tube; 15. piston head. DETAILED DESCRIPTION

[0032] 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.

[0033] In the present invention, unless otherwise clearly stipulated and limited, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] In order to illustrate the technical solution of the present application, the following is described through specific embodiments:

[0035] According to one embodiment, the present application provides a column processing method in this embodiment, characterized in that: the column processing method includes the following processing steps, processing steps of the outer cylinder body 1, processing steps of the secondary cylinder body 2, processing steps of the tertiary cylinder body 3, processing steps of the piston 4, processing steps of the connecting rod body 5, and processing steps of the piston 6 and the piston 7. It can be understood by a person of ordinary skill in the art that the above processing steps can be substantially in an unfixed order, and the steps of processing one of the structures first or the steps of processing another of the structures can be performed.

[0036] like Figure 1 , Figure 8 and Fig. 9 The structure diagram of the outer cylinder body and its components of a column processing method provided by an embodiment of the present invention is shown, the outer cylinder body includes an outer cylinder bottom 8 and an outer cylinder barrel 9, and the processing steps of the outer cylinder body 1 include the following sub-steps, 11) The processing steps of the outer cylinder bottom 8: ① blanking; ② forging blank; ③ quenching and tempering treatment; ④ surface sandblasting treatment; ⑤ turning the end face and large outer circle of the blank; ⑥ turning the outer circle stop and the inner hole cone; ⑦ drilling; ⑧ copper plating the inner surface and the liquid hole; 12) The processing steps of the outer cylinder 9 are: ① blanking; ② turning the two end faces and outer chamfering; ③ rough boring the inner hole; ④ quenching and tempering treatment; ⑤ welding the joint, lifting ring and accessories; ⑥ semi-finishing pushing the inner hole; ⑦ heat aging; ⑧ surface shot peening treatment; ⑨ scraping and rolling the inner hole; ⑩ frame position; The inner hole is molten copper; Scrape and polish the inner hole; Repair rack position; Fine turning of cylinder mouth stop and thread; In-vehicle taper and U-shaped groove; drilling; The cylinder mouth and liquid hole are copper plated; the processing link of scraping and rolling the inner hole can be replaced by the processing link of boring the inner hole and honing the inner hole; the material in the unloading link can choose the material shape that is suitable for the processing link. The following processing links are similar and the processing precision and accuracy must be guaranteed at the processing position and processing link of each structure; 13) The processing steps for assembling the outer cylinder body 1 are as follows: ① welding the outer cylinder bottom 2 and the outer cylinder barrel 3; ② welding the joints and the liquid pipe; ③ welding the liquid pipe assembly and accessories to the outer cylinder body 1; ④ grinding the weld until it is smooth.

[0037] According to another embodiment, Figure 2 , Fig.10 and Fig.11It is a structural schematic diagram of a secondary cylinder body and its components of a column processing method provided by an embodiment of the present invention, wherein the secondary cylinder body 2 is composed of a secondary cylinder bottom 10 and a secondary cylinder barrel 11; the processing steps of the secondary cylinder body 2 include the following sub-steps, 21) the processing steps of the secondary cylinder bottom 10: ① blanking; ② forging blank; ③ turning the end face; ④ rough turning the step circle; ⑤ drilling and turning the inner hole and the inner hole stop; ⑥ turning the head, rough turning the outer circle stop and the transition fillet; ⑦ quenching and tempering treatment; ⑧ fine turning the inner hole and the inner hole stop; ⑨ turning the inner hole groove; ⑩ turning the step circle; Bevel and inner stop; Slot milling; Drilling the bottom hole; Tapping thread; Copper plating; 22) The processing steps of the secondary cylinder 11 are as follows: ① blanking; ② forging blank; ③ turning the inner hole stop and chamfering the hole mouth at both ends; ④ turning the step circle and chamfering the two end faces; ⑤ rough boring the inner hole; ⑥ quenching and tempering treatment; ⑦ semi-finishing boring the inner hole; ⑧ scraping and rolling the inner hole; ⑨ turning the frame position; ⑩ melting copper in the inner hole; Scrape and polish the inner hole; Taking the inner hole as the reference, the outer circle and step circle of the cladding section are machined; External cylindrical laser cladding; Honing of inner holes; Turning end faces; Turn the outer circle and groove of the cladding section; Car step circle and bevel; Drilling deep holes; Drill hole stop; Drill the piston hole; Turn the stopper and thread of the hole; Turning the conical surface of the hole; The deep hole of welding is blocked; the processing link of scraping and rolling the inner hole can be replaced by the processing link of boring the inner hole; 23) The processing steps for assembling the secondary cylinder body 2 are as follows: ① welding the secondary cylinder bottom 10 and the secondary cylinder barrel 11; ② heat preservation and slow cooling after welding; ③ turning the outer circle of the flat weld, repairing the chamfer and the bayonet, and turning the flat weld; ④ turning the step circle, the outer circle and the groove of the piston section; ⑤ grinding the outer circle and polishing; ⑥ copper plating the cylinder mouth and the piston section.

[0038] According to another embodiment, by Figure 3 , Fig.12 and Fig.13It is shown that the three-stage cylinder body 3 includes a three-stage cylinder bottom 12 and a three-stage cylinder barrel 13; the processing steps of the three-stage cylinder body 3 include the following sub-steps, 31) the processing steps of the three-stage cylinder bottom 12: ① blanking; ② forging blank; ③ turning the end face, rough turning the step circle and turning the chamfer; ④ drilling and turning the inner hole and stopper; ⑤ turning the head, rough turning the outer circle stopper and chamfering; ⑥ quenching and tempering treatment; ⑦ turning the end face, rounding the outer circle bayonet; ⑧ turning the step circle and turning the U-shaped groove; ⑨ milling groove and tapping; ⑩ copper plating the inner surface and the liquid hole; 32) The processing steps of the three-stage cylinder 13 are as follows: ① blanking; ② forging blank; ③ turning the inner hole stop and chamfering the hole mouth at both ends; ④ turning the step circle and chamfering the two end faces; ⑤ rough boring the inner hole; ⑥ quenching and tempering treatment; ⑦ semi-finishing boring the inner hole; ⑧ scraping and rolling the inner hole; ⑨ turning the frame position; ⑩ melting copper in the inner hole; Scrape and polish the inner hole; Taking the inner hole as the reference, the outer circle and step circle of the cladding section are machined; External cylindrical laser cladding; Honing of inner holes; Turn the end face, outer circle and groove of the cladding section; Car step circle and bevel; Drilling deep holes; Drill hole stop; Drill the piston hole; Turn the stopper and thread of the hole; Turning the conical surface of the hole; The deep hole of welding is blocked; the processing link of scraping and rolling the inner hole can be replaced by the processing link of boring the inner hole; 33) The processing steps for assembling the three-stage cylinder body 3 are as follows: ① welding the three-stage cylinder bottom 12 and the three-stage cylinder barrel 13; ② grinding the weld to make it smooth; ③ turning the weld to make it smooth; ④ turning the inner hole and the stop; ⑤ turning the step circle, the outer circle and the groove of the piston section; ⑥ grinding the outer circle and polishing; ⑦ copper plating the cylinder mouth and the piston section.

[0039] According to another embodiment, Figure 4 , Fig.14 and Fig.15 It is shown that the piston 4 includes a piston tube 14 and a piston head 15; the processing steps of the piston 4 include the following sub-steps, 41) The processing steps of the piston tube 14: ① blanking; ② turning the two end faces and the inner hole stop; ③ rough turning the outer circle step and chamfer; ④ quenching and tempering treatment; ⑤ rough boring the inner hole; ⑥ repairing the outer circle chamfers at both ends; ⑦ scraping and rolling the inner hole; ⑧ turning two positions; ⑨ turning the cylinder bottom stop and groove; ⑩ turning the cylinder mouth; 42) The processing steps of the movable column head 15 are: ① cutting; ② clamping the outer circle, turning the end face, rough turning the large outer circle and the step circle; ③ rough turning the step circle and rough turning the ball head; ④ quenching and tempering treatment; ⑤ turning the end face, turning the outer circle, stopper, and groove; ⑥ drilling; ⑦ clamping the outer circle, turning the step circle, and turning the ball head; ⑧ drilling and reaming, and tapping; 43) The processing steps for assembling the piston 4 are as follows: ① welding the piston tube 14 and the piston head 15; ② turning the outer circle of the plated section; ③ fine turning the outer circle and outer circle groove of the piston section; ④ drilling and expanding the hole; ⑤ rough and fine grinding the outer circle; ⑥ chrome plating.

[0040] According to another embodiment, Figure 5 It is shown that the processing steps of the connecting rod body 5 are: ① cutting; ② clamping the outer circle, turning the end face, and rough turning the step circle; ③ turning around and rough turning each step circle; ④ quenching and tempering treatment; ⑤ grinding the center holes at both ends and rounding the process clamping mouth; ⑥ clamping the process step circle and turning two racks; ⑦ drilling a deep hole; ⑧ grinding the center hole; ⑨ clamping the step circle and turning the chamfer at the hole mouth; ⑩ top center hole, fine turning the large outer circle, step circle, and groove; Thread turning; Turn the stopper and chamfer of the hole; drilling; Rough and fine grinding of outer circle; Chrome-plated surface.

[0041] According to another embodiment, Figure 6 and Figure 7 It is shown that the processing steps of the piston 6 and the piston 7 are as follows: ① cutting; ② clamping the outer circle and turning the end face; ③ rough turning the outer circle and turning the step circle; ④ drilling and turning the inner hole; ⑤ turning the head, clamping the outer circle and turning the end face; ⑥ turning the flat outer circle and turning the inner hole stop; ⑦ quenching and tempering treatment; ⑧ supporting the inner hole and turning the end face; ⑨ turning the outer circle; ⑩ turning the inner hole stop; Turn around, align the step circle, and turn the end face; Turn the outer circle and chamfer the hole; Drilling the bottom hole; The surface is copper plated or zinc plated.

[0042] In another embodiment, the present application also provides a column obtained by using the column processing method, and can achieve the following technical effects for the processing of the three-telescopic column without a bottom valve, and can meet the various detailed requirements of the processing method for the coaxiality and assembly coaxiality requirements of each component of the three-telescopic column without a bottom valve, ensure the coaxiality requirements and other precision and requirements of each component of the column, and ensure the smooth assembly of the column, that is, improve processing efficiency, reduce processing time, and ensure processing accuracy.

[0043] In this application, in addition to the various good processing methods listed above, there are also the following advantages: 1. The cylinder wall deep hole processing method, the general processing method is to drill the deep hole first, and then turn the cylinder bottom groove. This patent uses a special tool to first process the cylinder bottom groove, and then drill the deep hole. The advantage of this processing is that the repair frame position and the cylinder bottom groove can be processed at one time, saving the time of processing the groove and parts transfer clamping, while ensuring the processing accuracy and improving the processing efficiency; 2. Processing method of three-stage cylinder body: The processing method of three-stage cylinder body is usually to process the small hole at the bottom of the cylinder first, and then weld it. During welding, the small hole will be slightly deformed due to the welding temperature, and the tolerance size and coaxiality of the small hole will change; the processing method in this patent is to pre-drill the small hole at the bottom of the cylinder, weld the cylinder bottom and the cylinder barrel, and then process the small hole and stop at the bottom of the cylinder, which can perfectly guarantee the size tolerance and form and position tolerance of the small hole and the hole; 3. The innovative point of the processing method of the connecting rod is: the processing method of this type of parts is usually to process the outer circle and step circle at one end, then get off the lathe, turn around, and process the step circle at the other end. Since the connecting rod has a thin diameter and a long length, it usually vibrates during processing, so after two clampings, the coaxiality of the step circles at both ends is difficult to guarantee. This processing method is to lengthen the size when cutting, turn the bayonet, and use the bayonet and the center hole to complete the processing of the outer circle and each step circle at one time, so as to ensure the tolerance and coaxiality of the step circle and the outer circle of the coating section; 4. The innovative point of the processing method of pistons and pistons is that the processing method of such parts is usually to first process the step circle and the inner hole and the inner hole grooves on one side, then take the lathe off, turn the back, and then process the outer circle and the inner hole on the other side, so it is more difficult to ensure the coaxiality; This processing method is to lengthen the size when cutting, turn the bayonet, and use the bayonet to complete the processing of the outer circle, each step circle, the inner hole and the inner hole groove at one time, so as to ensure the tolerance and coaxiality of the step circle, the inner hole and the inner hole groove.

[0044] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A column processing method, characterized in that: The column processing method comprises the following processing steps: a processing step of an outer cylinder body (1), a processing step of a secondary cylinder body (2), a processing step of a tertiary cylinder body (3), a processing step of a piston (4), a processing step of a connecting rod body (5), and a processing step of a piston (6) and a piston (7).

2. A column processing method according to claim 1, characterized in that: The outer cylinder body comprises an outer cylinder bottom (8) and an outer cylinder barrel (9), and the processing steps of the outer cylinder body (1) include the following sub-steps: 11) The processing steps of the outer cylinder bottom (8) are: ① blanking; ② forging the blank; ③ quenching and tempering treatment; ④ surface sandblasting treatment; ⑤ turning the end face and large outer circle of the blank; ⑥ turning the outer circle stop and inner hole cone; ⑦ drilling; ⑧ copper plating the inner surface and the liquid through hole; 12) The processing steps of the outer cylinder (9) are: ① cutting; ② turning the two end faces and the outer circle chamfering; ③ rough boring the inner hole; ④ quenching and tempering treatment; ⑤ welding the joint, lifting ring and accessories; ⑥Semi-finished inner hole pushing; ⑦Heat aging; ⑧ Surface shot peening; ⑨ Scraping and rolling of inner holes; ⑩ Frame position; The inner hole is molten copper; Scrape and polish the inner hole; Repair rack position; Fine turning of cylinder mouth stop and thread; In-vehicle taper and U-shaped groove; drilling; The cylinder mouth and liquid hole are copper plated; the processing step of scraping and rolling the inner hole can be replaced by the processing step of boring the inner hole and honing the inner hole; 13) The processing steps for assembling the outer cylinder body (1) are as follows: ① welding the outer cylinder bottom (2) and the outer cylinder barrel (3); ② welding the joints and the liquid pipe; ③ welding the liquid pipe assembly and accessories to the outer cylinder body (1); ④ grinding the weld until it is smooth.

3. A column processing method according to claim 1, characterized in that: The secondary cylinder body (2) is composed of a secondary cylinder bottom (10) and a secondary cylinder barrel (11); the processing steps of the secondary cylinder body (2) include the following sub-steps: 21) The processing steps of the secondary cylinder bottom (10) are: ① blanking; ② forging blank; ③ turning the end face; ④ rough turning the step circle; ⑤ drilling and turning the inner hole and the inner hole stop; ⑥ turning the head, rough turning the outer circle stop and the transition fillet; ⑦ quenching and tempering treatment; ⑧ fine turning the inner hole and the inner hole stop; ⑨ turning the inner hole groove; ⑩ turning the step circle; Bevel and inner stop; Slot milling; Drilling the bottom hole; Tapping thread; Copper plating; 22) The processing steps of the secondary cylinder (11) are: ① cutting; ② forging the blank; ③ turning the stopper and chamfering the hole at both ends; ④ turning the step circle and chamfering the two end faces; ⑤ rough boring the inner hole; ⑥ quenching and tempering treatment; ⑦ semi-finishing boring the inner hole; ⑧ scraping and rolling the inner hole; ⑨ turning the frame position; ⑩ melting copper in the inner hole; Scrape and polish the inner hole; Taking the inner hole as the reference, the outer circle and step circle of the cladding section are machined; External cylindrical laser cladding; Honing of inner holes; Turning end faces; Turn the outer circle and groove of the cladding section; Car step circle and bevel; Drilling deep holes; Drill hole stop; Drill the piston hole; Turn the stopper and thread of the hole; Turning the conical surface of the hole; The deep hole of welding is blocked; the processing link of scraping and rolling the inner hole can be replaced by the processing link of boring the inner hole; 23) The processing steps for assembling the secondary cylinder body (2) are as follows: ① welding the secondary cylinder bottom (10) and the secondary cylinder barrel (11); ② heat preservation and slow cooling after welding; ③ turning the outer circle of the flat weld, repairing the chamfer and the bayonet, and turning the flat weld; ④ turning the step circle, the outer circle and the groove of the piston section; ⑤ grinding the outer circle and polishing; ⑥ copper plating the cylinder mouth and the piston section.

4. A column processing method according to claim 1, characterized in that: The three-stage cylinder body (3) comprises a three-stage cylinder bottom (12) and a three-stage cylinder barrel (13); the processing steps of the three-stage cylinder body (3) include the following sub-steps: 31) The processing steps of the three-stage cylinder bottom (12) are: ① cutting; ② forging blank; ③ turning the end face, rough turning the step circle and turning the chamfer; ④ drilling and turning the inner hole and stopper; ⑤ turning the head, rough turning the outer circle stopper and chamfering; ⑥ quenching and tempering treatment; ⑦ turning the end face, rounding the outer circle bayonet; ⑧ turning the step circle and turning the U-shaped groove; ⑨ milling groove and tapping; ⑩ copper plating the inner surface and the liquid through hole; 32) The processing steps of the three-stage cylinder (13) are: ① cutting; ② forging the blank; ③ turning the stopper of the inner hole at both ends and chamfering the hole; ④ turning the step circle and chamfering the two end faces; ⑤ rough boring the inner hole; ⑥ quenching and tempering treatment; ⑦ semi-finishing boring the inner hole; ⑧ scraping and rolling the inner hole; ⑨ turning the frame position; ⑩ melting copper in the inner hole; Scrape and polish the inner hole; Taking the inner hole as the reference, the outer circle and step circle of the cladding section are machined; External cylindrical laser cladding; Honing of inner holes; Turn the end face, outer circle and groove of the cladding section; Car step circle and bevel; Drilling deep holes; Drill hole stop; Drill the piston hole; Turn the stopper and thread of the hole; Turning the conical surface of the hole; The deep hole of welding is blocked; the processing link of scraping and rolling the inner hole can be replaced by the processing link of boring the inner hole; 33) The processing steps for assembling the three-stage cylinder body (3) are as follows: ① welding the three-stage cylinder bottom (12) and the three-stage cylinder barrel (13); ② grinding the weld to make it smooth; ③ turning the weld to make it smooth; ④ turning the inner hole and stopper; ⑤ turning the step circle, the outer circle and the groove of the piston section; ⑥ grinding the outer circle and polishing; ⑦ copper plating the cylinder mouth and the piston section.

5. A column processing method according to claim 1, characterized in that: The plunger (4) comprises a plunger tube (14) and a plunger head (15); the processing steps of the plunger (4) include the following sub-steps: 41) The processing steps of the piston tube (14) are: ① cutting; ② turning the two end faces and the inner hole stop; ③ rough turning the outer circle step and chamfering; ④ quenching and tempering treatment; ⑤ Roughly push and bore the inner hole; ⑥ Chamfer the outer circumference at both ends; ⑦ Scrape and roll the inner hole; ⑧ Turn the two racks; ⑨ Turn the stop and bevel at the bottom of the cylinder; ⑩ Turn the cylinder mouth; 42) The processing steps of the movable column head (15) are: ① cutting; ② clamping the outer circle, turning the end face, rough turning the large outer circle and the step circle; ③ rough turning the step circle and rough turning the ball head; ④ quenching and tempering treatment; ⑤ turning the end face, turning the outer circle, stopper and groove; ⑥ drilling; ⑦ clamping the outer circle, turning the step circle and turning the ball head; ⑧ drilling and reaming, tapping; 43) The processing steps for assembling the piston (4) are as follows: ① welding the piston tube (14) and the piston head (15); ② turning the outer circle of the plated section; ③ fine turning the outer circle of the piston section and the outer circle groove; ④ drilling and expanding the hole; ⑤ rough and fine grinding the outer circle; ⑥ chrome plating.

6. A column processing method according to claim 1, characterized in that: The processing steps of the connecting rod body (5) are as follows: ① cutting; ② clamping the outer circle, turning the end face, and roughly turning the step circle; ③ turning around and roughly turning each step circle; ④ quenching and tempering treatment; ⑤ grinding the center holes at both ends and rounding the process clamping mouth; ⑥ clamping the process step circle and turning two positions; ⑦ drilling a deep hole; ⑧ grinding the center hole; ⑨ clamping the step circle and turning the chamfer at the hole mouth; ⑩ drilling the center hole, fine turning the large outer circle and the step circle, and turning the groove; Thread turning; Turn the stopper and chamfer of the hole; drilling; Rough and fine grinding of outer circle; Chrome-plated surface.

7. A column processing method according to claim 1, characterized in that: The processing steps of the piston (6) and the piston (7) are as follows: ① cutting; ② clamping the outer circle and turning the end face; ③ rough turning the outer circle and turning the step circle; ④ drilling and turning the inner hole; ⑤ turning the head, clamping the outer circle and turning the end face; ⑥ turning the outer circle flat and turning the inner hole stop; ⑦ quenching and tempering treatment; ⑧ supporting the inner hole and turning the end face; ⑨ turning the outer circle larger; ⑩ turning the inner hole stop; Turn around, align the step circle, and turn the end face; Turn the outer circle and chamfer the hole; Drilling the bottom hole; The surface is copper plated or zinc plated.

8. A column, characterized in that: The column is obtained by using any one of the column processing methods described in claims 1-7.

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