Bottom milling machine for seamless gas cylinder machining and using method

Abstract

The invention discloses a bottom milling machine for seamless gas cylinder machining and a using method, and particularly relates to the technical field of seamless gas cylinder machining, the bottom milling machine comprises a machine tool, a spindle box is arranged on one side of the machine tool in a sliding mode, the spindle box can move on the machine tool, a positioning mechanism is arranged on the other side of the machine tool, and a gas cylinder body is limited on the positioning mechanism. While the gas cylinder body is positioned, the flexible mechanism can be extruded, the three sensing pieces are synchronously driven to synchronously stretch out and draw back to make contact with the inner wall of the gas cylinder body, internal expanding limitation can be completed on the gas cylinder body through the limiting mechanism, and a power shaft and a milling cutter head can be limited; the milling cutter head keeps stable during high-speed rotation, the problem of eccentric rotation is avoided, meanwhile, the design of the flexible mechanism is adopted, the milling cutter head has the avoidance amount of a certain distance, the safety problem of rigid contact between the milling cutter head and a gas cylinder body is avoided, and the bottom milling safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of seamless gas cylinder processing, in particular to a bottom milling machine for seamless gas cylinder processing and a use method thereof. Background Art

[0002] The bottom milling process of seamless steel gas cylinders can mill out defects such as shrinkage holes and blooming that may occur in the manufacturing process of seamless gas cylinders. After milling, it is easy to observe the bottom fusion quality to ensure the quality and safety of the product. The bottom milling process of seamless gas cylinders can also optimize the performance of seamless gas cylinders, such as improving their pressure bearing capacity and corrosion resistance, thereby extending their service life and improving the safety factor of gas cylinders. Therefore, during the manufacturing process of seamless gas cylinders, a bottom milling machine is required to process the inside of the seamless gas cylinder to ensure the quality of the seamless gas cylinder.

[0003] A seamless gas cylinder bottom scraping device is disclosed in a patent application with reference publication number CN207806722U. The bottom scraping device is configured by a worker placing a workpiece on a workpiece clamping mechanism and then starting a numerical control system. The numerical control system drives the milling power head to rotate, and at the same time, a ball screw feed mechanism drives the machine tool slide, the milling power head, a special bottom scraping extended step tool rod and a bottom scraping tool to perform program processing on the workpiece.

[0004] The above-mentioned bottom scraping equipment can process the workpiece by program through the milling power head, the special bottom scraping extended step tool rod and the bottom scraping tool. However, the bottom scraping equipment cannot reinforce and restrict the milling cutter head when performing high-speed bottom milling. Therefore, during the bottom milling process, the milling cutter head is easily affected by the centrifugal force and eccentrically rotates, which easily causes the bottom milling accuracy to decrease, affects the bottom milling effect, is not conducive to the production of seamless gas cylinders, and leads to the decrease of the quality of seamless gas cylinders.

[0005] At the same time, the bottom scraping equipment cannot flexibly avoid the milling cutter head. When the milling cutter head contacts external equipment such as seamless gas cylinders, safety accidents such as cutter collision are very likely to occur, which reduces the safety of bottom milling and poses a major safety hazard. Summary of the invention

[0006] The purpose of the present invention is to provide a bottom milling machine for seamless gas cylinder processing and a use method thereof to solve the above-mentioned technical problems.

[0007] To solve the above technical problems, the present invention is implemented through the following technical solutions.

[0008] The present invention is a bottom milling machine for processing seamless gas cylinders. The machine tool has a main spindle box slidably arranged on one side of the machine tool, the main spindle box can move on the machine tool, a positioning mechanism is arranged on the other side of the machine tool, the gas cylinder body is restricted on the positioning mechanism, and a roller conveyor line is added on one side of the machine tool;

[0009] The milling cutter head is arranged on the main spindle box, and the main spindle box controls the milling cutter head to rotate at high speed and feed toward the inside of the gas cylinder body to complete the bottom milling processing. A connecting shaft is arranged at the tail of the milling cutter head, and the main spindle box and the milling cutter head are connected through the connecting shaft;

[0010] The limiting mechanism is arranged on the connecting shaft to realize auxiliary limiting of the milling cutter head. The limiting mechanism keeps the milling cutter head in stable rotation. The limiting mechanism is divided into a synchronous member and three sensing members. The synchronous member is used to adjust the initial position of the three sensing members. The three sensing members contact the inner wall of the gas cylinder body to limit the milling cutter head.

[0011] The flexible mechanism is arranged on the connecting shaft to realize flexible avoidance of the milling cutter head. The flexible mechanism and the limiting mechanism are linked and coordinated, and the limiting mechanism is triggered by the flexible mechanism to complete the limiting processing of the milling cutter head.

[0012] Furthermore, the connecting shaft comprises:

[0013] A follower seat is slidably arranged on the machine tool and connected to the spindle box;

[0014] The power shaft is rotatably arranged on the follower seat, and the power connection between the main spindle box and the milling cutter head is completed through the power shaft.

[0015] Furthermore, the connecting shaft also includes:

[0016] The isolation sleeve is arranged outside the connecting shaft, one end of which is detachably fixedly connected to the follower seat, and the isolation sleeve synchronously enters the gas cylinder body with the milling cutter head to complete the protection.

[0017] Furthermore, the positioning mechanism comprises:

[0018] A positioning frame is slidably arranged on the machine tool, and an adjusting cylinder is installed on one side of the positioning frame and is transmission-connected to one side of the positioning frame, and V-shaped arms are rotatably installed on both sides of the positioning frame, and a plurality of guide wheels are arranged side by side at the bottom of the positioning frame;

[0019] The clamping cylinder is arranged at the top of the positioning frame. A push plate is installed at the output end of the clamping cylinder. Driving arms are hinged on both sides of the push plate. The bottoms of the two driving arms are respectively hinged to the tops of the two V-shaped arms.

[0020] Two sliding members are symmetrically arranged on both sides of the positioning frame. Both sliding members are slidably engaged in the positioning frame. A clamping plate is installed on one side of each sliding member, and the clamping plate is in close contact with the gas cylinder body. The tops of the two sliding members are respectively hinged to the bottoms of the two V-shaped arms.

[0021] Furthermore, the positioning mechanism also includes:

[0022] The downward pressure cylinder is arranged on one side of the positioning frame. An arc pressure plate is installed at the output end of the downward pressure cylinder. The arc pressure plate contacts the gas cylinder body to complete the clamping work. A pressure arm is added on one side of the downward pressure cylinder, and a limit plate is installed at the tail of the pressure arm.

[0023] Furthermore, the flexible mechanism comprises:

[0024] A sliding area is provided through the front end of the power shaft, and a follower arm is slidably engaged in the sliding area;

[0025] The extrusion zone is arranged at the center of the power shaft, and a No. 1 piston is slidably installed in the extrusion zone, and the front end of the No. 1 piston is detachably fixedly connected to the rear end of the follower arm;

[0026] The blocking member is arranged on one side of the sliding area, and the blocking member can contact with the follower arm.

[0027] Furthermore, the synchronization element comprises:

[0028] The concentric ring is arranged outside the power shaft, and the escape areas are symmetrically opened at the top and bottom of the power shaft. The concentric ring is correspondingly slidably engaged in the two escape areas. No. 2 springs are arranged in the two escape areas. A rotating ring is rotatably sleeved outside the concentric ring.

[0029] The annular cavity is arranged on one side of the rotating ring, an end cover is rotatably mounted on the annular cavity, and a delivery pipe is connected and mounted on one side of the end cover;

[0030] Three lifting racks are arranged in a circular array on a rotating ring, each lifting rack is slidably mounted with a lifting platform, a lifting arm is fixedly mounted on the upper surface of the lifting platform, the lifting arm is correspondingly slidably arranged through the top of the lifting rack, a No. 3 spring is sleeved on the outside of the lifting arm, and a trigger wheel is rotatably mounted at the bottom of each lifting arm;

[0031] Three adjustment frames are arranged in a circular array on the rotating ring. A threaded rod is rotatably installed in each adjustment frame. A threaded block is slidably engaged in the adjustment frame. The threaded block is sleeved on the outside of the threaded rod through threaded engagement. An inclined platform is installed on the upper surface of the threaded block. The inclined platform contacts the trigger wheel. A driving gear is rotatably installed on one side of each adjustment frame. The driving gear is transmission-connected with the threaded rod.

[0032] The driving gear ring is rotatably mounted on the outer wall of the rotating ring, and the driving gears are respectively meshed and connected with the driving gears on the three adjustment frames.

[0033] Furthermore, each sensor includes:

[0034] A sensing chamber No. 1 is arranged at the top of the lifting arm, a piston No. 2 is slidably installed in the sensing chamber No. 1, an arc-shaped friction plate is installed on the top of the piston No. 2, and one side of the bottom of the piston No. 2 is connected with the annular chamber through a pipeline, and a spring No. 4 is installed between the bottom of the piston No. 2 and the sensing chamber No. 1;

[0035] The reserved cavity is arranged on the top of the arc-shaped friction plate, a trigger plate is installed in the reserved cavity in a sliding and sealing manner, and a plurality of push springs are installed between the trigger plate and the reserved cavity.

[0036] Furthermore, each sensor element also includes:

[0037] A limiting arm is arranged on one side of the top of the adjusting frame, and an arc-shaped tooth plate is slidably mounted on the limiting arm;

[0038] The No. 2 sensing chamber is arranged on the limiting arm, and a No. 3 piston component is slidably installed in the No. 2 sensing chamber. The bottom of the No. 3 piston component is connected to the arc-shaped tooth plate, and a No. 5 spring is installed between the No. 3 piston component and the No. 2 sensing chamber, and the No. 2 sensing chamber is connected to the reserved chamber through a pipeline.

[0039] The present invention also provides a bottom milling method for processing a seamless gas cylinder, and the bottom milling method specifically comprises the following steps:

[0040] Step 1: First, place the gas cylinder body on the roller conveyor line, and then control the gas cylinder body to move to the predetermined processing position;

[0041] Step 2, then controlling the positioning mechanism to clamp and fix the gas cylinder body in multiple directions;

[0042] Step 3: Then the limiting mechanism is triggered by the flexible mechanism, and the limiting mechanism can limit the internal expansion of the gas cylinder body and limit the connection shaft and the milling cutter head;

[0043] Step 4: At the same time, the operating state of the milling cutter head is controlled through the flexible mechanism.

[0044] Compared with the prior art, the present invention has the following beneficial effects:

[0045] 1. The present invention is provided with a flexible mechanism, so that the milling cutter head and the follower arm can move in the sliding area to complete the avoidance, and the No. 1 spring provides flexible support for the displacement of the milling cutter head, thereby improving the safety of the milling bottom processing. At the same time, the No. 1 piston member moves in the extrusion area, and the cooperation between the extrusion area and the No. 1 piston member can provide assistance for the flexible avoidance of the No. 1 spring, further improving the stability of the operation of the milling cutter head, and can complete the triggering and driving of the limiting mechanism;

[0046] 2. The present invention is provided with a limiting mechanism. After the milling cutter head contacts the gas cylinder body, the oil squeezed into the annular cavity enters the No. 1 sensing cavity, pushing the No. 2 piston member to move in the No. 1 sensing cavity, so that the arc-shaped friction plate is in friction contact with the inner wall of the gas cylinder body, thereby completing the internal fixation of the gas cylinder body. At the same time, the arc-shaped friction plates on the three sensing members form a stable friction contact with the gas cylinder body, which can reinforce the power shaft, make the power shaft rotate stably, avoid eccentric rotation of the milling cutter head, and improve the accuracy of bottom milling processing;

[0047] 3. The present invention is provided with a positioning mechanism to control the clamping cylinder. The driving arm pushes the V-shaped arm to rotate around its hinge point, so that the clamping plate contacts the side wall of the gas cylinder body to complete the clamping work, which is beneficial to the subsequent bottom milling process. After that, the downward pressure cylinder is started to push the arc pressure plate downward to contact the gas cylinder body again to complete the limiting. When the arc pressure plate moves downward, it drives the pressure arm and the limit plate to move downward synchronously, so that the limit plate contacts the rear of the gas cylinder body, thereby completing the multi-directional limitation of the gas cylinder body.

[0048] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 It is the overall front view of the present invention;

[0050] Figure 2 It is a schematic diagram of installing the spindle box of the present invention on a machine tool;

[0051] Figure 3 It is a schematic diagram of the connection between the main shaft box and the connecting shaft member of the present invention;

[0052] Figure 4 It is a schematic diagram of the positioning mechanism of the present invention;

[0053] Figure 5 It is a schematic diagram of the connection between the sliding member and the V-shaped arm of the present invention;

[0054] Figure 6 It is a schematic diagram of the connecting shaft of the present invention;

[0055] Figure 7 It is a schematic diagram of the milling cutter head of the present invention in the gas cylinder body;

[0056] Figure 8 It is a schematic diagram of the flexible mechanism of the present invention;

[0057] Fig. 9 It is a schematic diagram of the distribution of the avoidance zone on the power shaft of the present invention;

[0058] Fig.10 It is a schematic diagram of a sensing element of the present invention;

[0059] Fig.11 It is a schematic diagram of the distribution of the ramp and the trigger wheel of the present invention;

[0060] Fig.12 It is a schematic diagram of the distribution of the trigger plate and the arc-shaped friction plate of the present invention;

[0061] Fig.13 This is a schematic diagram of the interior of the No. 2 sensing cavity of the present invention.

[0062] In the figure: 1, machine tool; 2, spindle box; 201, No. 1 slide; 202, electric slide; 203, driving spindle; 3, gas cylinder body; 4, roller conveyor line; 5, milling cutter head; 6, follower seat; 7, power shaft; 8, isolation sleeve; 9, positioning frame; 10, adjusting cylinder; 11, V-shaped arm; 12, guide wheel; 13, clamping cylinder; 14, push plate; 15, driving arm; 16, sliding member; 17, clamping plate; 18, pressing cylinder; 19, arc pressure plate; 20, pressure arm; 21, limit plate; 22, sliding area; 23, follower arm; 24, No. 1 spring; 25, extrusion area; 26, No. 1 piston member; 27, blocking member; 28, same Core ring; 29, avoidance zone; 30, No. 2 spring; 31, rotating ring; 32, annular cavity; 33, end cover; 34, conveying pipe; 35, lifting frame; 36, lifting platform; 37, lifting arm; 38, No. 3 spring; 39, trigger wheel; 40, adjustment frame; 41, threaded rod; 42, threaded block; 43, ramp; 44, driving gear; 45, driving gear ring; 46, No. 1 sensing cavity; 47, No. 2 piston component; 48, arc friction plate; 49, No. 4 spring; 50, reserved cavity; 51, trigger plate; 52, push spring; 53, limiting arm; 54, arc gear plate; 55, No. 2 sensing cavity; 56, No. 3 piston component; 57, No. 5 spring. DETAILED DESCRIPTION

[0063] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0064] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0065] Embodiment 1: The present invention provides a technical solution: Figures 1 to 13 As shown, a bottom milling machine for processing seamless gas cylinders comprises:

[0066] A machine tool 1, a spindle box 2 is slidably arranged on one side of the machine tool 1, the spindle box 2 includes a No. 1 slide 201 slidably engaged on the machine tool 1, an electric slide 202 is arranged on one side of the machine tool 1, the output end of the electric slide 202 is connected to the No. 1 slide 201, a box body is arranged on the No. 1 slide 201, a spindle motor is installed in the box body, a driving spindle 203 is rotatably installed on the box body through a bracket, the driving spindle 203 is connected to the spindle motor through a belt, so that the driving spindle 203 completes the rotation, and the spindle box 2 can move on the machine tool 1, a positioning mechanism is arranged on the other side of the machine tool 1, a gas cylinder body 3 is restricted on the positioning mechanism, and a roller conveyor line 4 is added on one side of the machine tool 1, and the roller on the roller conveyor line 4 is matched with the gas cylinder body 3;

[0067] The milling cutter head 5 is arranged on the spindle box 2. The spindle box 2 controls the milling cutter head 5 to rotate at a high speed and feed toward the inside of the gas cylinder body 3 to complete the milling bottom processing. A connecting shaft is arranged at the tail of the milling cutter head 5. The spindle box 2 and the milling cutter head 5 are connected by the connecting shaft. Opening areas are arranged on both sides of the milling cutter head 5, and a plurality of convex ridges are arranged on the milling cutter head 5. A plurality of CNC blades are arranged side by side on the milling cutter head 5, and the plurality of CNC blades respectively correspond to the plurality of convex ridges. The milling bottom processing of the gas cylinder body 3 is completed by the plurality of CNC blades, and two water holes are opened on the milling cutter head 5. An annular water supply chamber is rotatably installed on the back of the milling cutter head 5. The annular water supply chamber is connected with the water channel of the machine tool 1, and the annular water supply chamber is connected with the two water holes to complete the water supply, which can cool down the milling cutter head 5 for milling the bottom, and flush the milling bottom position of the gas cylinder body 3;

[0068] It is worth mentioning that: when performing bottom milling processing: by providing a milling cutter head 5, start the spindle box 2, drive the power shaft 7 and the milling cutter head 5 to rotate at high speed through the driving spindle 203, and use the milling cutter head 5 to mill the bottom of the gas cylinder body 3. At the same time, the electric slide 202 drives the spindle box 2 to move to complete the feed of the bottom milling processing, which is convenient for technical personnel to accurately control the milling amount and improve the milling accuracy. At the same time, the isolation sleeve 8 provided can isolate and protect the spindle box 2.

[0069] The limiting mechanism is arranged on the connecting shaft to realize auxiliary limiting of the milling cutter head 5. The limiting mechanism keeps the milling cutter head 5 stable and centered in rotation. The limiting mechanism is divided into a synchronous member and three sensing members. The synchronous member is used to adjust the initial position of the three sensing members. The three sensing members contact the inner wall of the gas cylinder body 3 to limit the milling cutter head 5.

[0070] The flexible mechanism is arranged on the connecting shaft to realize flexible avoidance of the milling cutter head 5, and the flexible mechanism and the limiting mechanism are linked to complete the limiting process of the milling cutter head 5 through the flexible mechanism and the limiting mechanism is triggered by the flexible mechanism;

[0071] In an embodiment of the present invention, the connecting shaft comprises:

[0072] A follower seat 6 is slidably disposed on the machine tool 1, and the follower seat 6 is connected to the spindle box 2;

[0073] The power shaft 7 is rotatably arranged on the follower seat 6. Specifically, the power shaft 7 rotates through the follower seat 6 and is transmission-connected with the driving spindle 203 of the spindle box 2, and the power connection between the spindle box 2 and the milling cutter head 5 is completed through the power shaft 7;

[0074] The connecting shaft also includes:

[0075] The isolating sleeve 8 is arranged outside the connecting shaft, one end of which is detachably fixedly connected to the follower seat 6, and the isolating sleeve 8 is connected to the power shaft 7 through an annular retainer, the annular retainer is fixedly connected to the isolating sleeve 8, and the annular retainer is rotatably connected to the power shaft 7 through a bearing, and the isolating sleeve 8 follows the milling cutter head 5 to synchronously enter the gas cylinder body 3 to complete the protection;

[0076] In an embodiment of the present invention, the positioning mechanism includes:

[0077] A positioning frame 9 is slidably arranged on the machine tool 1, and an adjusting cylinder 10 is installed on one side of the positioning frame 9 for transmission connection with one side of the positioning frame 9, and V-shaped arms 11 are rotatably installed on both sides of the positioning frame 9, and a plurality of guide wheels 12 are arranged side by side at the bottom of the positioning frame 9, and the guide wheels 12 are matched with the gas cylinder body 3 in a contour, and the gas cylinder body 3 is guided and transported by the plurality of guide wheels 12;

[0078] The clamping cylinder 13 is arranged at the top of the positioning frame 9, and a push plate 14 is installed at the output end of the clamping cylinder 13. Driving arms 15 are hinged on both sides of the push plate 14, and the bottoms of the two driving arms 15 are respectively hinged to the tops of the two V-shaped arms 11;

[0079] Two sliding members 16 are symmetrically arranged on both sides of the positioning frame 9. Both sliding members 16 are slidably engaged in the positioning frame 9. A slideway for the sliding members 16 is provided in the positioning frame 9. A clamping plate 17 is installed on one side of each sliding member 16. The clamping plate 17 is in close contact with the gas cylinder body 3. The tops of the two sliding members 16 are respectively hinged to the bottoms of the two V-shaped arms 11;

[0080] It is worth noting that when positioning the gas cylinder body 3: a positioning mechanism is provided, the gas cylinder body 3 is transported by the roller conveyor line 4, and is continuously pushed into the positioning frame 9 to contact with multiple guide wheels 12 until a predetermined position. At this time, the gas cylinder body 3 is correspondingly sleeved on the outside of the connecting shaft, which can complete the initial restriction of the gas cylinder body 3, and then the clamping cylinder 13 is started to drive the push plate 14 to move, and the driving arm 15 pushes the V-shaped arm 11 to rotate around its hinge point. When the two V-shaped arms 11 swing, the movable sliding member 16 moves in the positioning frame 9, so that the clamping plate 17 contacts with the side wall of the gas cylinder body 3 to complete the clamping. The work is beneficial to the subsequent bottom milling process, and then the downward pressure cylinder 18 is started to push the arc pressure plate 19 downward to contact the gas cylinder body 3 again to complete the limit. When the arc pressure plate 19 moves downward, it drives the pressure arm 20 and the limit plate 21 to move downward synchronously, so that the limit plate 21 contacts the tail of the gas cylinder body 3, thereby completing the multi-directional restriction of the gas cylinder body 3 and avoiding the displacement of the gas cylinder during the bottom milling. In addition, a plurality of rotating wheels are arranged on the limit plate 21, which can complete the rotation guidance when the limit plate 21 contacts the gas cylinder body 3. After the subsequent bottom milling is completed, the clamping cylinder 13 and the downward pressure cylinder 18 are controlled to reset and the gas cylinder body 3 can be moved out.

[0081] In the embodiment of the present invention, the positioning mechanism further includes:

[0082] The pressing cylinder 18 is arranged on one side of the positioning frame 9, and an arc-shaped pressure plate 19 is installed at the output end of the pressing cylinder 18. The arc-shaped pressure plate 19 contacts the gas cylinder body 3 to complete the pressing work, and a pressure arm 20 is added on one side of the pressing cylinder 18. A limiting plate 21 is installed at the tail of the pressure arm 20. The limiting plate 21 contacts the tail of the gas cylinder body 3, and a plurality of rotating wheels are rotatably arranged on the limiting plate 21, and the rotation of the limiting plate 21 and the gas cylinder body 3 is guided by the plurality of rotating wheels.

[0083] Among them, the electrical components such as the spindle box 2, the clamping cylinder 13, the pressing cylinder 18, etc. are all connected to switches through wires, and the switches are electrically connected to the controller, and the specific structure of the controller is not limited.

[0084] Embodiment 2: Based on the limiting mechanism provided in Embodiment 1, this embodiment provides a further technical solution of the limiting mechanism.

[0085] like Figures 10 to 13 As shown, the synchronizer includes:

[0086] The concentric ring 28 is arranged outside the power shaft 7, and the escape areas 29 are symmetrically opened at the top and bottom of the power shaft 7. The concentric ring 28 is correspondingly slidably engaged in the two escape areas 29. No. 2 springs 30 are arranged in the two escape areas 29. One end of the two No. 2 springs 30 is connected to the concentric ring 28. A rotating ring 31 is rotatably sleeved outside the concentric ring 28.

[0087] The annular cavity 32 is arranged on one side of the rotating ring 31, and an end cover 33 is rotatably installed on the annular cavity 32. A delivery pipe 34 is connected and installed on one side of the end cover 33, and the other end of the delivery pipe 34 is connected with the extrusion area 25. The delivery pipe 34 is made of metal material, and the delivery pipe 34 can be adjusted in telescopic manner;

[0088] Three lifting frames 35 are arranged in a circular array on the rotating ring 31. A lifting platform 36 is slidably installed on each lifting frame 35. A lifting arm 37 is fixedly installed on the upper surface of the lifting platform 36. The lifting arm 37 is correspondingly slidably passed through the top of the lifting frame 35. A No. 3 spring 38 is sleeved on the outside of the lifting arm 37. The No. 3 spring 38 is correspondingly arranged between the lifting platform 36 and the lifting frame 35. A trigger wheel 39 is rotatably installed at the bottom of each lifting arm 37. The No. 3 spring 38 is used to push the lifting arm 37 to move toward the inside of the lifting frame 35, so that the trigger wheel 39 is close to the inclined platform 43.

[0089] Three adjustment frames 40 are arranged on the rotating ring 31 in a circular array. The three adjustment frames 40 are all installed at the bottom of the lifting frame 35 through a bracket. A threaded rod 41 is rotatably installed in each adjustment frame 40. A threaded block 42 is slidably engaged in the adjustment frame 40. The threaded block 42 is sleeved on the outside of the threaded rod 41 through threaded engagement. An inclined platform 43 is installed on the upper surface of the threaded block 42. The inclined platform 43 contacts the trigger wheel 39. A driving gear 44 is rotatably installed on one side of each adjustment frame 40. The driving gear 44 is transmission-connected to the threaded rod 41.

[0090] A driving gear ring 45 is rotatably mounted on the outer wall of the rotating ring 31, and the driving gears 44 are respectively meshed and connected with the driving gears 44 on the three adjustment frames 40, and an operating ring is installed on one side of the driving gear ring 45;

[0091] It should be noted that when adjusting the initial position of the arc-shaped friction plate 48, it is only necessary to rotate the driving gear ring 45 to rotate the driving gears 44 on the three sensing parts, so that the corresponding threaded rod 41 rotates, driving the threaded block 42 to drive the inclined platform 43 to move, and the trigger wheel 39 is squeezed through the joint movement of the inclined platform 43, and then the initial position of the lifting arm 37 is fine-tuned, so as to facilitate the adjustment and use for gas cylinder bodies 3 of different sizes. The technician only needs to fine-tune the position of the inclined platform 43 to complete the free adjustment of the initial position of the lifting arm 37, which is convenient for operation.

[0092] In the embodiment of the present invention, each sensor includes:

[0093] A sensing chamber No. 1 46 is arranged at the top of the lifting arm 37, a piston No. 2 47 is slidably installed in the sensing chamber No. 1 46, an arc-shaped friction plate 48 is installed on the top of the piston No. 2 47, and one side of the bottom of the piston No. 2 47 is connected with the annular chamber 32 through a pipeline, the pipeline specifically adopts a flexible pipe, which can complete the telescopic action, and a guide rod is restricted by a bracket on one side of the sensing chamber No. 1 46, the top of the guide rod is connected to the lower surface of the arc-shaped friction plate 48, and a spring No. 4 49 is installed between the bottom of the piston No. 2 47 and the sensing chamber No. 1 46, and the piston No. 2 47 is pulled to retract into the sensing chamber No. 1 46 by the spring No. 4 49;

[0094] The reserved cavity 50 is arranged on the top of the arc-shaped friction plate 48. A trigger plate 51 is slidably and sealedly installed in the reserved cavity 50. A plurality of push springs 52 are installed between the trigger plate 51 and the reserved cavity 50. The trigger plate 51 is pushed out of the reserved cavity 50 by the plurality of push springs 52. A lifting area for limiting the trigger plate 51 is opened on the inner wall of the reserved cavity 50. An anti-slip pad is installed on the upper surface of the trigger plate 51.

[0095] It is worth mentioning that when the milling cutter head 5 is restricted: by providing a restriction mechanism, when the milling cutter head 5 contacts the gas cylinder body 3, the oil squeezed into the annular cavity 32 enters the No. 1 sensing cavity 46, pushing the No. 2 piston member 47 to move in the No. 1 sensing cavity 46, so that the arc-shaped friction plate 48 is in friction contact with the inner wall of the gas cylinder body 3, thereby completing the internal fixation of the gas cylinder body 3. At the same time, the arc-shaped friction plates 48 on the three sensing members form a stable friction contact with the gas cylinder body 3, which can reinforce the power shaft 7, so that the power shaft 7 can rotate stably, avoid eccentric rotation of the milling cutter head 5, and improve the accuracy of the milling bottom processing. Through the design of the avoidance area 29, under normal circumstances, the concentric ring 28 and the restriction mechanism are pushed to the front end of the avoidance area 29 by the No. 2 spring 30. , and then the feed of the milling head 5 is continuously controlled by the electric slide 202. The feed amount of the milling head 5 can be compensated by the avoidance area 29 and the No. 2 spring 30 to avoid the displacement between the limiting mechanism and the power shaft 7 causing motion interference. At the same time, through the design of the reserved cavity 50, under normal conditions, the trigger plate 51 is driven by the push spring 52 to extend the arc friction plate 48, and first completes the initial contact with the gas cylinder body 3, which is convenient for the subsequent positioning of the limiting mechanism. With the continuous movement of the arc friction plate 48, the trigger plate 51 is squeezed to move in the reserved cavity 50, and the gas in the reserved cavity 50 is pushed into the No. 2 sensing cavity 55, pushing the No. 3 piston 56 to move, so that the arc tooth plate 54 moves down and engages with the drive gear 44 to complete the limit, thereby avoiding accidental rotation of the drive gear 44.

[0096] Each sensor also includes:

[0097] A limiting arm 53 is disposed on one side of the top of the adjusting frame 40, and an arc-shaped toothed plate 54 is slidably mounted on the limiting arm 53, and the arc-shaped toothed plate 54 can mesh with the driving gear 44;

[0098] The No. 2 sensing chamber 55 is arranged on the limiting arm 53, and a No. 3 piston member 56 is slidably installed in the No. 2 sensing chamber 55. The bottom of the No. 3 piston member 56 is connected to the arc-shaped tooth plate 54, and a No. 5 spring 57 is installed between the No. 3 piston member 56 and the No. 2 sensing chamber 55. The arc-shaped tooth plate 54 is separated from the driving gear 44 by the No. 5 spring 57, and the No. 2 sensing chamber 55 is connected to the reserved chamber 50 through a pipeline, which specifically adopts a flexible tube to complete the telescopic action.

[0099] Embodiment 3: Based on the flexible mechanism provided in Embodiment 1, this embodiment provides a further technical solution of the flexible mechanism.

[0100] like Figure 8 and Fig. 9 As shown, the flexible mechanism includes:

[0101] The sliding area 22 is provided through the front end of the power shaft 7, and a follower arm 23 is slidably engaged in the sliding area 22. The front end of the follower arm 23 slides through the front end of the power shaft 7, and the front end of the follower arm 23 is detachably fixedly connected to the milling cutter head 5. A No. 1 spring 24 is installed between the follower arm 23 and the sliding area 22, and the No. 1 spring 24 pushes the follower arm 23 to extend out of the sliding area 22;

[0102] The squeezing area 25 is arranged at the center of the power shaft 7, and the squeezing area 25 is connected with the sliding area 22. Oil is injected into the squeezing area 25, and the triggering action of the three sensing elements is completed through the subsequent flow of the oil. A No. 1 piston member 26 is slidably installed in the squeezing area 25, and the front end of the No. 1 piston member 26 is detachably fixedly connected to the rear end of the follower arm 23;

[0103] A blocking member 27 is disposed on one side of the sliding area 22. The blocking member 27 can be extended and retracted. The blocking member 27 specifically adopts one of a manual telescopic rod and an electric telescopic rod. Meanwhile, the blocking member 27 can be replaced by other mechanisms capable of completing telescopic adjustment. The blocking member 27 can contact the follower arm 23.

[0104] It is worth noting that: when performing flexible avoidance: by providing a flexible mechanism, the milling head 5 and the follower arm 23 can move in the sliding area 22 to complete the avoidance until they come into contact with the blocking member 27 and stop. The extension length of the three sensing members is controlled by controlling the telescopic length of the blocking member 27. The No. 1 spring 24 provides flexible support for the displacement of the milling head 5, thereby improving the safety of the bottom milling process. At the same time, when the milling head 5 contacts the bottom of the gas cylinder body 3, the No. 1 spring 24 contracts, and drives the No. 1 piston member 26 to move in the extrusion area 25, and pushes the oil in the extrusion area 25 into the annular cavity 32. The cooperation between the extrusion area 25 and the No. 1 piston member 26 can provide assistance for the flexible avoidance of the No. 1 spring 24, thereby further improving the stability of the operation of the milling head 5.

[0105] Embodiment 4: A bottom milling method for processing seamless gas cylinders, the bottom milling method specifically comprising the following steps:

[0106] Step 1: firstly place the gas cylinder body 3 on the roller conveyor line 4, and then control the gas cylinder body 3 to move to a predetermined processing position;

[0107] Step 2, then control the positioning mechanism to complete multi-directional clamping and fixing of the gas cylinder body 3;

[0108] Step 3, the limiting mechanism is then triggered via the flexible mechanism, and the limiting mechanism can limit the internal expansion of the gas cylinder body 3, and can also limit the power shaft 7 and the milling cutter head 5;

[0109] Step 4: At the same time, the operating state of the milling cutter head 5 is controlled by the flexible mechanism.

[0110] The present invention provides a bottom milling machine for processing seamless gas cylinders and a method for using the same. The specific working principle is as follows: first, the gas cylinder body 3 is placed on a roller conveyor line 4, and then the opening of the gas cylinder body 3 is directed toward the side of the spindle box 2 and continuously pushed until the milling cutter head 5 contacts the gas cylinder body 3, and the positioning mechanism is controlled to work to complete multi-directional clamping and fixing of the gas cylinder body 3. At the same time, under the pushing action of the gas cylinder body 3, the flexible mechanism can be squeezed, and the limiting mechanism is triggered through the flexible mechanism, and the three sensing parts are synchronously driven to complete synchronous expansion and contact with the inner wall of the gas cylinder body 3. The limiting mechanism can complete internal expansion restriction of the gas cylinder body 3, and can complete position limiting of the power shaft 7 and the milling cutter head 5, so that the milling cutter head 5 remains stable during high-speed rotation to avoid the problem of eccentric rotation. At the same time, the design of the flexible mechanism is adopted, so that the milling cutter head 5 has a certain distance of avoidance, to avoid the safety problem of rigid contact between the milling cutter head 5 and the gas cylinder body 3, thereby improving the safety of bottom milling.

[0111] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0112] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bottom milling machine for seamless gas cylinder processing, characterized in that: include: A machine tool, a main spindle box is slidably arranged on one side of the machine tool, the main spindle box can move on the machine tool, a positioning mechanism is arranged on the other side of the machine tool, a gas cylinder body is restricted on the positioning mechanism, and a roller conveyor line is added on one side of the machine tool; The milling cutter head is arranged on the main spindle box, and the main spindle box controls the milling cutter head to rotate at high speed and feed toward the inside of the gas cylinder body to complete the bottom milling processing. A connecting shaft is arranged at the tail of the milling cutter head, and the main spindle box and the milling cutter head are connected through the connecting shaft; The limiting mechanism is arranged on the connecting shaft to realize auxiliary limiting of the milling cutter head. The limiting mechanism keeps the milling cutter head in stable rotation. The limiting mechanism is divided into a synchronous member and three sensing members. The synchronous member is used to adjust the initial position of the three sensing members. The three sensing members contact the inner wall of the gas cylinder body to limit the milling cutter head. The flexible mechanism is arranged on the connecting shaft to realize flexible avoidance of the milling cutter head. The flexible mechanism and the limiting mechanism are linked and coordinated, and the limiting mechanism is triggered by the flexible mechanism to complete the limiting processing of the milling cutter head.

2. The bottom milling machine for seamless gas cylinder processing according to claim 1 is characterized in that: The connecting shaft comprises: A follower seat is slidably arranged on the machine tool and connected to the spindle box; The power shaft is rotatably arranged on the follower seat, and the power connection between the main spindle box and the milling cutter head is completed through the power shaft.

3. The bottom milling machine for seamless gas cylinder processing according to claim 2 is characterized in that: The connecting shaft also includes: The isolation sleeve is arranged outside the connecting shaft, one end of which is detachably fixedly connected to the follower seat, and the isolation sleeve synchronously enters the gas cylinder body with the milling cutter head to complete the protection.

4. The bottom milling machine for seamless gas cylinder processing according to claim 1 is characterized in that: The positioning mechanism includes: A positioning frame is slidably arranged on the machine tool, and an adjusting cylinder is installed on one side of the positioning frame and is transmission-connected to one side of the positioning frame, and V-shaped arms are rotatably installed on both sides of the positioning frame, and a plurality of guide wheels are arranged side by side at the bottom of the positioning frame; The clamping cylinder is arranged at the top of the positioning frame. A push plate is installed at the output end of the clamping cylinder. Driving arms are hinged on both sides of the push plate. The bottoms of the two driving arms are respectively hinged to the tops of the two V-shaped arms. Two sliding members are symmetrically arranged on both sides of the positioning frame. Both sliding members are slidably engaged in the positioning frame. A clamping plate is installed on one side of each sliding member, and the clamping plate is in close contact with the gas cylinder body. The tops of the two sliding members are respectively hinged to the bottoms of the two V-shaped arms.

5. The bottom milling machine for seamless gas cylinder processing according to claim 4 is characterized in that: The positioning mechanism also includes: The downward pressure cylinder is arranged on one side of the positioning frame. An arc pressure plate is installed at the output end of the downward pressure cylinder. The arc pressure plate contacts the gas cylinder body to complete the clamping work. A pressure arm is added on one side of the downward pressure cylinder, and a limit plate is installed at the tail of the pressure arm.

6. The bottom milling machine for seamless gas cylinder processing according to claim 2, characterized in that: The flexible mechanism includes: A sliding area is provided through the front end of the power shaft, a follower arm is slidably engaged in the sliding area, and a No. 1 spring is installed between the follower arm and the sliding area; The extrusion zone is arranged at the center of the power shaft, and a No. 1 piston is slidably installed in the extrusion zone, and the front end of the No. 1 piston is detachably fixedly connected to the rear end of the follower arm; The blocking member is arranged on one side of the sliding area, and the blocking member can contact with the follower arm.

7. The bottom milling machine for seamless gas cylinder processing according to claim 2 is characterized in that: The synchronization components include: The concentric ring is arranged outside the power shaft, and the escape areas are symmetrically opened at the top and bottom of the power shaft. The concentric ring is correspondingly slidably engaged in the two escape areas. No. 2 springs are arranged in the two escape areas. A rotating ring is rotatably sleeved outside the concentric ring. The annular cavity is arranged on one side of the rotating ring, an end cover is rotatably mounted on the annular cavity, and a delivery pipe is connected and mounted on one side of the end cover; Three lifting racks are arranged in a circular array on a rotating ring, each lifting rack is slidably mounted with a lifting platform, a lifting arm is fixedly mounted on the upper surface of the lifting platform, the lifting arm is correspondingly slidably arranged through the top of the lifting rack, a No. 3 spring is sleeved on the outside of the lifting arm, and a trigger wheel is rotatably mounted at the bottom of each lifting arm; Three adjustment frames are arranged in a circular array on the rotating ring. A threaded rod is rotatably installed in each adjustment frame. A threaded block is slidably engaged in the adjustment frame. The threaded block is sleeved on the outside of the threaded rod through threaded engagement. An inclined platform is installed on the upper surface of the threaded block. The inclined platform contacts the trigger wheel. A driving gear is rotatably installed on one side of each adjustment frame. The driving gear is transmission-connected with the threaded rod. The driving gear ring is rotatably mounted on the outer wall of the rotating ring, and the driving gears are respectively meshed and connected with the driving gears on the three adjustment frames.

8. The bottom milling machine for seamless gas cylinder processing according to claim 7 is characterized in that: Each sensor includes: A sensing chamber No. 1 is arranged at the top of the lifting arm, a piston No. 2 is slidably installed in the sensing chamber No. 1, an arc-shaped friction plate is installed on the top of the piston No. 2, and one side of the bottom of the piston No. 2 is connected with the annular chamber through a pipeline, and a spring No. 4 is installed between the bottom of the piston No. 2 and the sensing chamber No. 1; The reserved cavity is arranged on the top of the arc-shaped friction plate, a trigger plate is installed in the reserved cavity in a sliding and sealing manner, and a plurality of push springs are installed between the trigger plate and the reserved cavity.

9. The bottom milling machine for seamless gas cylinder processing according to claim 8, characterized in that: Each sensor also includes: A limiting arm is arranged on one side of the top of the adjusting frame, and an arc-shaped tooth plate is slidably mounted on the limiting arm; The No. 2 sensing chamber is arranged on the limiting arm, and a No. 3 piston component is slidably installed in the No. 2 sensing chamber. The bottom of the No. 3 piston component is connected to the arc-shaped tooth plate, and a No. 5 spring is installed between the No. 3 piston component and the No. 2 sensing chamber, and the No. 2 sensing chamber is connected to the reserved chamber through a pipeline.

10. A method for milling the bottom of a seamless gas cylinder, using a milling machine for milling the bottom of a seamless gas cylinder as claimed in any one of claims 1 to 9, characterized in that: The bottom milling method specifically comprises the following steps: Step 1: First, place the gas cylinder body on the roller conveyor line, and then control the gas cylinder body to move to the predetermined processing position; Step 2, then control the positioning mechanism to complete multi-directional clamping and fixing of the gas cylinder body; Step 3: Then the limiting mechanism is triggered by the flexible mechanism, and the limiting mechanism can limit the internal expansion of the gas cylinder body and limit the connection shaft and the milling cutter head; Step 4: At the same time, the operating state of the milling cutter head is controlled through the flexible mechanism.

Images