Full-automatic numerical control lathe for machining piston rod of air cylinder

Abstract

The utility model relates to the technical field of metal processing equipment, and provides a full-automatic numerical control lathe for processing a cylinder piston rod, which comprises an equipment assembly, and the equipment assembly is provided with a fixed clamping unit, a first turning unit, a movable clamping unit and a second turning unit; the movable clamping unit comprises a first moving assembly arranged in the equipment assembly and a chuck base fixed to the moving end of the first moving assembly, and the chuck base is provided with a first three-jaw chuck used for clamping the shaft rod and a first driving motor used for driving the first three-jaw chuck to rotate. The first driving motor and the chuck base are jointly provided with a discharging channel for the shaft rod to pass through. A discharging pipeline is fixedly erected on the side face, away from the fixed clamping unit, of the chuck base and directly faces the discharging channel, and a wriggling mechanism used for forcing the shaft rod to gradually move towards the discharging pipeline is arranged between the discharging pipeline and the chuck base. On the basis, end machining of the two piston rods and automatic discharging of the piston rods can be conducted synchronously, and the overall production efficiency of the air cylinder piston rods is improved.

Description

Technical Field

[0001] This application relates to the field of metal processing equipment technology, and in particular to a fully automatic CNC lathe for machining cylinder piston rods. Background Technology

[0002] The piston rod is a key component in a cylinder that connects the internal piston to the external actuator. Its function is to transmit power and achieve linear reciprocating motion. In production, the piston rod is usually made of high-carbon steel plated with hard chrome or stainless steel and other alloy metals. The machining accuracy and surface quality of the piston rod after processing directly affect the cylinder performance and mechanical life.

[0003] Fully automatic CNC lathes are high-precision, high-efficiency automated machine tools that control mechanical movements through digital instructions, enabling automated machining and unloading of piston rods. However, in actual machining processes, because both ends of the piston rod need to be machined separately, the existing workflow of fully automatic CNC lathes typically includes: turning one end of the piston rod, gripping and flipping the piston rod, repositioning the piston rod and turning the end again, and transferring it to the unloading station for unloading. While this method automates the machining of the piston rod, the time required to machine a single piston rod is relatively long, resulting in low overall production efficiency, which needs improvement. Utility Model Content

[0004] In order to improve the overall production efficiency of cylinder piston rods, this application provides a fully automatic CNC lathe for machining cylinder piston rods.

[0005] The fully automatic CNC lathe for machining cylinder piston rods provided in this application adopts the following technical solution:

[0006] A fully automatic CNC lathe for machining cylinder piston rods includes an equipment assembly. The equipment assembly is provided with a fixed clamping unit for clamping the shaft to be machined, a first turning unit for machining the end of the shaft, a movable clamping unit for clamping and transferring the shaft, and a second turning unit for machining the other end of the shaft.

[0007] The movable clamping unit includes a first movable assembly disposed inside the equipment assembly and a chuck seat fixed to the movable end of the first movable assembly. The chuck seat is equipped with a three-jaw chuck for clamping the shaft and a drive motor for driving the three-jaw chuck to rotate. The drive motor and the chuck seat are provided with a discharge channel for the shaft to pass through. A discharge pipe is provided on the side of the chuck seat away from the fixed clamping unit. The discharge pipe and the discharge channel are directly opposite each other, and a peristaltic mechanism is provided between the discharge pipe and the chuck seat to force the shaft to gradually move towards the discharge pipe.

[0008] Optionally, the peristaltic mechanism includes a push cylinder fixed to the chuck seat, a support plate fixed to the movable end of the push cylinder, and a deflector rod hinged to the support plate on one side. A first torsion spring is provided at the rotatable connection between the deflector rod and the support plate. The first torsion spring is used to force the deflector rod to rotate normally in a direction close to the central axis of the push cylinder.

[0009] A one-way component is provided between the sway bar and the moving end of the push cylinder to realize the sway bar's one-way rotation when the push cylinder is activated. When the push cylinder is activated, the sway bar can abut against the shaft and force the shaft to move towards the discharge pipe.

[0010] Optionally, the one-way component includes a pawl component and a ratchet component that cooperates with it. The ratchet component is fixedly connected to the sway bar, and the rotation center of the ratchet component and the sway bar are kept coaxial. The pawl component is rotatably connected to the support plate, and a second torsion spring is provided between the pawl component and the support plate. The second torsion spring is used to force the pawl component to rest against the outer peripheral surface of the ratchet component in a normal state. When the sway bar forces the shaft to move towards the direction of the discharge pipe, the ratchet component can rotate smoothly.

[0011] Optionally, the peristaltic mechanism also includes a reset stop pin disposed on the chuck seat, and an extension pin is provided on the side of the pawl component. When the push cylinder is reset to the initial state, the extension pin abuts against the reset stop pin, at which time the pawl component and the ratchet component are separated from each other.

[0012] Optionally, the support plate is fixed with a positioning pin, and the first torsion spring is used to force the eccentric rod to rest against the positioning pin in a normal state. At this time, the eccentric rod and the output end of the push cylinder are set at an angle, and the eccentric rod is tilted towards the direction of the discharge pipe.

[0013] Optionally, the free end of the sway bar is fixedly connected to an arc-shaped member, and a damping pad is partially sleeved on the outer periphery of the arc-shaped member.

[0014] Optionally, the first turning unit includes a second movable assembly disposed inside the equipment assembly and a movable tool holder fixed to the moving end of the second movable assembly. There are two sets of movable tool holders, which are respectively disposed on two opposite sides of the first turning unit. Each movable tool holder can be detachably fixed with a first tool head component.

[0015] Optionally, the second turning unit includes a fixed plate frame fixedly mounted on the equipment assembly and a fixed tool holder mounted on the fixed plate frame, wherein a plurality of second tool head components are fixed on the fixed tool holder.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. After the fixed clamping unit of this application clamps the shaft to be processed, the end of the shaft can be turned by the first turning unit; then, the movable clamping unit can clamp and transfer the shaft that has been turned for the first time, and move the shaft to the second turning unit for turning the other end. At this time, the fixed clamping unit can process the new shaft to be processed, so that the processing of the two shafts can be carried out simultaneously, which is beneficial to improving the overall production efficiency of piston rod processing.

[0018] 2. After both ends of the shaft are machined and the finished piston rod is obtained, the moving clamping unit moves back to the fixed clamping unit to clamp the new shaft. When the shaft enters the moving clamping unit, it can push the machined piston rod backward along the discharge channel. The piston rod can be pushed to a position between the discharge pipe and the discharge channel. At this time, the peristaltic mechanism gradually drives the piston rod to move towards the discharge pipe, and finally the automatic unloading operation of the piston rod can be completed. Based on this, the fully automatic CNC lathe of this application can simultaneously complete the end machining of two shafts and the automatic unloading operation of the piston rod, thereby improving the overall production efficiency of cylinder piston rods.

[0019] 3. By controlling the movement of the push cylinder, the eccentric rod is moved closer to the piston rod. The damping pad at the end of the eccentric rod first abuts against the piston rod, increasing the frictional resistance between the eccentric rod and the piston rod. Then, as the push cylinder continues to move, the eccentric rod can rotate around the hinge point between itself and the support plate, thereby moving the piston rod a certain distance closer to the discharge pipe. After the push cylinder moves multiple times, the piston rod gradually moves towards the discharge pipe and finally leaves the discharge pipe, thus realizing the automatic unloading operation of the piston rod.

[0020] 4. Through the cooperation of the pawl component and the ratchet component, the pawl component normally abuts against the outer circumference of the ratchet component under the torque of the second torsion spring, which can realize the unidirectional rotation of the ratchet component, thereby enabling the sway bar to rotate unidirectionally towards the discharge pipe. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the fully automatic CNC lathe in this embodiment;

[0022] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 This is a schematic diagram of the moving clamping unit in this embodiment;

[0024] Figure 4 This is a schematic diagram of the unloading side of the fully automatic CNC lathe in this embodiment;

[0025] Figure 5This is a schematic diagram of the chuck seat discharge side in this embodiment;

[0026] Figure 6 This is a schematic diagram of the peristaltic mechanism in this embodiment;

[0027] Figure 7 yes Figure 6 Enlarged view of point B in the middle.

[0028] Explanation of reference numerals in the attached drawings: 1. Equipment assembly; 11. Machining chamber; 12. Baffle plate; 2. Fixed clamping unit; 21. Three-jaw chuck II; 3. First turning unit; 31. Moving tool holder; 4. Moving clamping unit; 41. First moving assembly; 42. Chuck seat; 43. Three-jaw chuck I; 44. Drive motor I; 441. Discharge channel; 45. Discharge pipe; 5. Second turning unit; 51. Fixed plate frame; 52. Fixed tool holder; 53. Second tool head assembly; 6. Peristaltic mechanism; 61. Push cylinder; 62. Support plate; 621. Positioning pin; 63. Tilt rod; 631. Hinge shaft; 632. First torsion spring; 633. Arc rod; 634. Damping pad sleeve; 64. One-way assembly; 641. Pawl assembly; 642. Ratchet assembly; 643. Extension post; 65. Reset stop post. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 - Appendix Figure 7 This application will be described in further detail.

[0030] This application discloses a fully automatic CNC lathe for machining cylinder piston rods.

[0031] Reference Figure 1 , Figure 2 A fully automatic CNC lathe for machining cylinder piston rods includes an equipment assembly 1, a machining chamber 11 is provided inside the equipment assembly 1, and the machining chamber 11 is provided with a fixed clamping unit 2 for clamping the shaft to be machined, a first turning unit 3 for machining the end of the shaft, a movable clamping unit 4 for clamping and transferring the shaft, and a second turning unit 5 for machining the other end of the shaft.

[0032] Reference Figure 2The fixed clamping unit 2 includes a fixed base fixed inside the equipment assembly 1, a three-jaw chuck 21 rotatably mounted on the side of the fixed base, and a drive motor 2 for driving the three-jaw chuck 21 to rotate. The fixed base has a feed channel at its end for the shaft to enter, extending to the outside of the equipment assembly 1. This allows the shaft to be processed to enter the feed channel from the outside of the equipment assembly 1, move through the feed channel to the three-jaw chuck 21, be clamped and positioned by the three-jaw chuck 21, and rotate circumferentially by controlling the drive motor 2. The three-jaw chuck 21 can be partially located inside the processing chamber 11. It should be noted that the specific structure of the fixed clamping unit 2 is a conventional design in the art and is not the focus of this case; therefore, it will not be elaborated upon here.

[0033] The first turning unit 3 is used to process the shaft held in the fixed clamping unit 2. Specifically, the first turning unit 3 includes a second moving assembly disposed on the side wall of the machining chamber 11 and a moving tool holder 31 fixed to the moving end of the second moving assembly. The second moving assembly can move the moving tool holder 31 in the YZ plane. There are two sets of moving tool holders 31, which are respectively disposed on two opposite sides of the first turning unit 3. Each moving tool holder 31 can be detachably fixed with a first cutting head component. When the shaft to be processed is fixedly clamped by the three-jaw chuck 21 and rotated circumferentially by the drive motor 2, the second moving assembly is controlled to force the moving tool holder 31 to move towards the three-jaw chuck 21. The first cutting head component can perform turning processing on the end of the shaft to be processed.

[0034] Reference Figure 3 The moving clamping unit 4 includes a first moving assembly 41 disposed on the bottom wall of the machining chamber 11 and a chuck seat 42 fixed to the moving end of the first moving assembly 41. The first driving assembly 41 is capable of moving the chuck seat 42 in the XY plane. The chuck seat 42 is equipped with a three-jaw chuck 43 for clamping the shaft and a drive motor 44 for driving the three-jaw chuck 43 to rotate. (See also...) Figure 2 It should be noted that after the end of the shaft is machined, the three-jaw chuck 43 can be positioned directly opposite the three-jaw chuck 21. At this time, the three-jaw chuck 21 is reset, and the feeding system at the front end of the equipment assembly 1 will once again transport the shaft to be machined into the feeding channel, which can push the shaft with the end machined into the inside of the three-jaw chuck 43, so that the shaft can be clamped and positioned by the three-jaw chuck 43.

[0035] Back Figure 2The second turning unit 5 includes a fixed plate frame 51 fixedly mounted on the bottom wall of the machining chamber 11 and a fixed tool holder 52 fixed to the top of the fixed plate frame 51. The fixed tool holder 52 is fixed with a plurality of second tool head components 53. In this embodiment, there are multiple second tool head components 53, and each second tool head component 53 is arranged at equal intervals along the extension direction of the fixed tool holder 52. During operation, after the shaft with one end finished is clamped and positioned by the three-jaw chuck 43, the shaft is driven to rotate by the drive motor 44, and the shaft is moved to each of the second tool head components 53 by the first moving assembly 41, so as to complete the turning machining of the other end of the shaft.

[0036] Back Figure 3 The center of the drive motor 44 and the center of the chuck seat 42 are jointly provided with a discharge channel 441 for the shaft to pass through. A discharge pipe 45 is provided on the side of the chuck seat 42 away from the fixed clamping unit 2. The discharge pipe 45 and the discharge channel 441 are spaced apart and directly opposite each other. One end of the discharge pipe 45, away from the discharge channel 441, extends to the outside of the equipment assembly 1 to facilitate material unloading. Furthermore, referring to… Figure 4 A baffle 12 is provided between the discharge pipe 45 and the equipment assembly 1. The baffle 12 is movably installed on the equipment assembly 1 to ensure that the processing chamber 11 inside the equipment assembly 1 is always kept closed.

[0037] It should be noted that, referring to Figure 3 , Figure 4 After the two ends of the shaft are machined and the finished piston rod is obtained, the three-jaw chuck 43 is reset, and the new shaft enters the inside of the three-jaw chuck 43, which can push the piston rod to move along the discharge channel 441 towards the discharge pipe 45. Finally, one end of the piston rod can partially enter the discharge pipe 45, while the other end of the piston rod remains inside the discharge channel 441.

[0038] Reference Figure 5 A peristaltic mechanism 6 is provided between the discharge pipe 45 and the chuck seat 42 to force the piston rod to gradually move towards the discharge pipe 45. Specifically, the peristaltic mechanism 6 includes a pushing cylinder 61, a support plate 62, and a sway bar 63. The pushing cylinder 61 is fixedly mounted on the chuck seat 42, and the support plate 62 is fixedly connected to the movable end of the pushing cylinder 61. (See also...) Figure 6The sway bar 63 includes a main rod and a hinge shaft 631 fixedly connected to one end of the main rod. The sway bar 63 is hinged to the support plate 62 via the hinge shaft 631, and a first torsion spring 632 is sleeved on the outer periphery of the hinge shaft 631. One end of the first torsion spring 632 is connected to the support plate 62, and the other end is connected to the sway bar 63. A positioning pin 621 is fixedly connected to the support plate 62. The torque generated by the first torsion spring 632 on the sway bar 63 can force the sway bar 63 to rotate normally towards the central axis where the moving end of the push cylinder 61 is located, so that the sway bar 63 is normally against the positioning pin 621. At this time, the sway bar 63 and the output end of the push cylinder 61 are set at an angle, and the end of the sway bar 63 away from the hinge shaft 631 can tilt towards the discharge pipe 45.

[0039] Reference Figure 6 The end of the eccentric lever 63 away from the hinge shaft 631 is provided with an integrally formed arc rod 633, the shape of which can be adapted to the outer edge shape of the shaft. A damping pad 634 is partially sleeved on the outer peripheral surface of the arc rod 633 to increase the frictional resistance between the two when the arc rod 633 abuts against the shaft. A one-way component 64 is provided between the eccentric lever 63 and the movable end of the push cylinder 61 to realize the one-way rotation of the eccentric lever 63 when the push cylinder 61 is actuated. Thus, when the push cylinder 61 is actuated, the eccentric lever 63 can abut against the shaft and force the shaft to move towards the discharge pipe 45.

[0040] Specific reference Figure 7 The one-way component 64 includes a pawl component 641 and a ratchet component 642 that cooperates with it. The hinge shaft 631 of the deflector 63 passes through the support plate 62 and is partially exposed on the side of the support plate 62. The ratchet component 642 is fixedly connected to the deflector 63. Specifically, the ratchet component 642 is coaxially fixed to the exposed end of the hinge shaft 631 on the deflector 63. The pawl component 641 is rotatably connected to the support plate 62 and is located outside the ratchet component 642. A second torsion spring (not shown in the figure) is provided between the pawl component 641 and the support plate 62. The second torsion spring is used to force the pawl component 641 to rest against the outer peripheral surface of the ratchet component 642 in a normal state.

[0041] Simultaneously refer to Figure 6 , Figure 7 It should be noted that when the sway bar 63 forces the shaft to move closer to the discharge pipe 45, the ratchet component 642 can push open the pawl component 641 and rotate smoothly. When the push cylinder 61 is reset, the circumferential rotation of the ratchet component 642 is restricted by the pawl component 641. At this time, the sway bar 63 can disengage from the shaft, thereby reducing the possibility of the shaft being pulled back by the sway bar 63.

[0042] The peristaltic mechanism 6 also includes a reset stop 65 that is fixed to the chuck seat 42. An extension post 643 is provided on the side of the pawl component 641. When the push cylinder 61 returns to its initial state, the extension post 643 abuts against the reset stop 65. At this time, the pawl component 641 is separated from the ratchet component 642 by force, allowing the eccentric lever 63 to abut against the locating pin 621 again under the torque of the first torsion spring 632, thus completing the reset action of the eccentric lever 63. When the push cylinder 61 is activated again, the extension post 643 gradually disengages from the reset stop 65, and the pawl component 641 abuts against the outer periphery of the ratchet component 642 again under the torque of the second torsion spring, thus providing a unidirectional rotation restriction.

[0043] The implementation principle of a fully automatic CNC lathe for machining cylinder piston rods according to an embodiment of this application is as follows:

[0044] When the fully automatic CNC lathe of this application is working, after the fixed clamping unit 2 clamps the shaft to be processed, the end of the shaft can be machined by the first turning unit 3; then, the movable clamping unit 4 can clamp and transfer the shaft that has been machined for the first time, and move the shaft to the second turning unit 5 for machining the other end of the shaft. At this time, the fixed clamping unit 2 can process the new shaft to be processed, so that the machining operations of the two shafts are carried out simultaneously.

[0045] After both ends of the shaft are machined to obtain the finished piston rod, the movable clamping unit 4 moves back to the fixed clamping unit 2 to clamp the new shaft. This shaft can push the machined piston rod backward along the discharge channel 441. The piston rod can be pushed to a position between the discharge pipe 45 and the discharge channel 441. At this time, the peristaltic mechanism 6 gradually drives the piston rod to move towards the discharge pipe 45. Finally, the piston rod can leave the discharge pipe 45, thus completing the automatic unloading operation of the piston rod. Based on this, the fully automatic CNC lathe of this application can simultaneously complete the end machining of two shafts and the automatic unloading operation of the piston rod, thereby improving the overall production efficiency of cylinder piston rods.

[0046] The above are preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made to the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fully automatic CNC lathe for gas cylinder piston rod machining, characterized in that: The device assembly (1) is provided with a fixed clamping unit (2) for clamping an axis to be processed, a first turning unit (3) for processing the end of the axis, a movable clamping unit (4) for clamping and transferring the axis, and a second turning unit (5) for processing the other end of the axis. The movable clamping unit (4) comprises a first moving assembly (41) arranged inside the device assembly (1) and a chuck seat (42) fixed to the moving end of the first moving assembly (41), the chuck seat (42) is provided with a three-jaw chuck (43) for clamping the axis and a driving motor (44) for driving the three-jaw chuck (43) to rotate, the driving motor (44) and the chuck seat (42) are provided with a discharging channel (441) for the axis to pass through; the side surface of the chuck seat (42) away from the fixed clamping unit (2) is fixedly provided with a discharging pipeline (45), the discharging pipeline (45) and the discharging channel (441) are opposite to each other, and a peristalsis mechanism (6) is arranged between the discharging pipeline (45) and the chuck seat (42) for forcing the axis to gradually move towards the discharging pipeline (45).

2. The fully automatic CNC lathe according to claim 1, characterized in that: The peristalsis mechanism (6) comprises a push-moving air cylinder (61) fixed to the chuck seat (42), a supporting plate (62) fixed to the movable end of the push-moving air cylinder (61), and a deflection rod (63) unilaterally hinged to the supporting plate (62), the rotating connection between the deflection rod (63) and the supporting plate (62) is provided with a first torsional spring (632) for forcing the deflection rod (63) to rotate towards the direction close to the central axis of the push-moving air cylinder (61) in normal state; A one-way assembly (64) is arranged between the deflection rod (63) and the movable end of the push-moving air cylinder (61) to realize one-way rotation of the deflection rod (63) when the push-moving air cylinder (61) acts, when the push-moving air cylinder (61) acts, the deflection rod (63) can abut against the axis and force the axis to move towards the discharging pipeline (45).

3. The fully automatic CNC lathe according to claim 2, characterized in that: The one-way assembly (64) comprises a pawl component (641) and a ratchet component (642) matched therewith, the ratchet component (642) is fixedly connected to the deflection rod (63), and the ratchet component (642) is coaxial with the rotation center of the deflection rod (63); the pawl component (641) is rotationally connected to the supporting plate (62), and a second torsional spring is arranged between the pawl component (641) and the supporting plate (62), the second torsional spring is used to force the pawl component (641) to abut against the outer periphery of the ratchet component (642) in normal state, when the deflection rod (63) forces the axis to move towards the discharging pipeline (45), the ratchet component (642) can rotate smoothly.

4. The fully automatic CNC lathe according to claim 3, characterized in that: The peristaltic mechanism (6) further comprises a reset blocking column (65) arranged on the chuck base (42), and the side surface of the pawl component (641) is provided with an extension column (643), which abuts against the reset blocking column (65) when the push-moving air cylinder (61) is reset to the initial state, at which time the pawl component (641) and the ratchet component (642) are separated from each other.

5. The fully automatic CNC lathe according to claim 2, characterized in that: The supporting plate (62) is fixed with a positioning pin (621), and the first torsional spring (632) is used to force the deflection rod (63) to normally abut against the positioning pin (621), at which time the deflection rod (63) is arranged at an angle between the output end of the push-moving air cylinder (61), and the deflection rod (63) is inclined towards the discharge pipeline (45).

6. The fully automatic CNC lathe according to claim 2, characterized in that: The free end of the deflection rod (63) is fixedly connected with an arc rod piece (633), and the outer circumferential side of the arc rod piece (633) is partially sleeved with a damping pad sleeve (634).

7. The fully automatic CNC lathe according to claim 1, characterized in that: The first turning unit (3) comprises a second moving assembly arranged on the inner side of the equipment assembly (1) and a moving tool holder (31) fixed to the moving end of the second moving assembly, the moving tool holder (31) is provided in two groups, and the two groups of moving tool holders (31) are arranged on the two opposite sides of the first turning unit (3) respectively; each moving tool holder (31) is detachably fixed with a first tool bit component.

8. The fully automatic CNC lathe according to claim 1, characterized in that: The second turning unit (5) comprises a fixed plate frame (51) fixedly arranged on the equipment assembly (1) and a fixed tool holder (52) arranged on the fixed plate frame (51), and the fixed tool holder (52) is fixed with a plurality of second tool bit components (53).

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