A long-stroke pushing device for a high-grade numerical control lathe

Abstract

The utility model discloses a high -grade numerical control lathe long -stroke pushing device, including rotary oil cylinder, pull rod and chuck, rotary oil cylinder is connected with chuck through pull rod, and the piston rod and pull rod of rotary oil cylinder are hollow, be equipped with the drive mechanism in the piston rod of rotary oil cylinder on rotary oil cylinder, be equipped with the pushing rod of being worn in pull rod on the drive mechanism, be equipped with the blowing passage on the pushing rod, the front end of blowing passage is linked with blowing pipe, and the rear end of pushing rod is equipped with a plurality of blowing hole with blowing passage intercommunication, compared with prior art, can automatic cleaning iron filings and unloading.

Description

Technical Field

[0001] This utility model relates to the technical field of CNC lathes, and in particular to the technical field of a long-stroke pusher device for high-end CNC lathes. Background Technology

[0002] A lathe is a machine tool used to process rotationally symmetrical workpieces. It mainly performs cutting tasks such as external diameter, internal diameter, end face, conical surface, and thread cutting. Its core advantages are high precision, high efficiency and automation capabilities, and it is especially suitable for the mass production of parts such as shafts, discs, and flanges.

[0003] As CNC lathes develop towards high speed, high efficiency, high precision, automation, and intelligence, the requirements for lathe spindle speed and the lathe's ability to automatically clean the workpiece positioning surface on the fixture are becoming increasingly stringent. In particular, the cleaning of chips from the positioning surface of the CNC lathe fixture directly affects work efficiency and workpiece clamping accuracy. In addition, after machining, the lathe's three-jaw or four-jaw chuck has a very short stroke to release the workpiece in order to shorten the unloading time. However, if gravity balance causes the workpiece to still be held between two jaws, unloading may still not be completed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art and to propose a long-stroke pushing device for high-end CNC lathes that can automatically clean up iron filings and unload materials.

[0005] To achieve the above objectives, this utility model proposes a long-stroke pushing device for a high-end CNC lathe, comprising a rotary cylinder, a connecting rod, and a chuck. The rotary cylinder is connected to the chuck via the connecting rod. Both the piston rod and the connecting rod of the rotary cylinder are hollow. The rotary cylinder is provided with a drive mechanism located inside its piston rod. The drive mechanism is provided with a pushing rod passing through the connecting rod. The pushing rod is provided with an air blowing channel. The front end of the air blowing channel is connected to an air blowing pipe, and the rear end of the pushing rod is provided with several air blowing holes connected to the air blowing channel.

[0006] Preferably, the drive mechanism includes a cylinder body, a piston, an air passage I, and an air passage II. The piston is located inside the cylinder body, and a push rod is located on the piston. A cylinder cover is located at the rear end of the cylinder body for sealing between the push rod and the cylinder body. An air passage I is located on the cylinder body and communicates with its interior. An air passage II is located on the cylinder body, and an air passage III is located on the cylinder cover for communicating between the air passage II and the interior of the cylinder body.

[0007] Preferably, the front end of the air blowing channel passes through the piston, and the front end of the cylinder body is provided with an air blowing pipe that extends into the air blowing channel. The air blowing pipe is sealed to the cylinder body and the air blowing channel by a sealing ring.

[0008] Preferably, the rotary cylinder is provided with a mounting base, the mounting base is provided with a three-way rotary joint, the three-way rotary joint is provided with a cylinder body, and the three channels of the three-way rotary joint are respectively connected to air passage I, air passage II and air blowing pipe.

[0009] Preferably, the push rod includes a front hollow rod, a middle hollow rod and a rear hollow rod that are screwed together in sequence. The cylinder cover is provided with an anti-rotation sleeve fitted on the middle hollow rod. The anti-rotation sleeve is provided with a positioning head. The middle hollow rod is provided with a positioning groove that cooperates with the positioning head.

[0010] Preferably, a support sleeve is provided between the central hollow rod and the tie rod.

[0011] Preferably, the chuck is provided with a positioning sleeve through which the push rod can pass.

[0012] The beneficial effects of this utility model are as follows: This utility model has a drive mechanism located inside the piston rod of the rotary cylinder, and a push rod passing through the pull rod on the drive mechanism. The push rod has an air blowing channel, the front end of the air blowing channel is connected to the air blowing pipe, and the rear end of the push rod has several air blowing holes connected to the air blowing channel. The drive mechanism drives the push rod to move backward to push the material. Compressed air passes through the air blowing pipe and the air blowing channel in sequence, and finally blows out from the air blowing holes to clean the iron filings. Compared with the prior art, this utility model can automatically clean the iron filings and unload the material.

[0013] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a long-stroke pusher device for a high-end CNC lathe according to this utility model; Figure 2 yes Figure 1 Enlarged view of A in the middle; Figure 3 This is a schematic diagram of a long-stroke pusher device for a high-end CNC lathe that pushes out a workpiece.

[0015] In the diagram: 1-rotary cylinder, 2-push rod, 3-chuck, 4-drive mechanism, 5-air blowing channel, 6-air blowing hole, 7-mounting seat, 8-three-way rotary joint, 9-anti-rotation sleeve, 10-positioning head, 11-positioning groove, 12-support sleeve, 13-positioning sleeve, 14-air blowing pipe, 15-pull rod, 16-workpiece, 21-front hollow rod, 22-middle hollow rod, 23-rear hollow rod, 41-cylinder body, 42-piston, 43-air passage I, 44-air passage II, 45-cylinder head, 46-air passage III. Detailed Implementation

[0016] See Figure 1 , Figure 2 and Figure 3 This utility model discloses a long-stroke pushing device for a high-end CNC lathe, comprising a rotary cylinder 1, a pull rod 15, and a chuck 3. The rotary cylinder 1 is connected to the chuck 3 via the pull rod 15. Both the piston rod and the pull rod 15 of the rotary cylinder 1 are hollow. The rotary cylinder 1 is characterized by having a drive mechanism 4 located inside its piston rod. The drive mechanism 4 is equipped with a pushing rod 2 that passes through the pull rod 15. The pushing rod 2 is equipped with an air blowing channel 5. The front end of the air blowing channel 5 is connected to an air blowing pipe 14, and the rear end of the pushing rod 2 is equipped with several air blowing holes 6 that are connected to the air blowing channel 5.

[0017] The drive mechanism 4 includes a cylinder body 41, a piston 42, an air passage I 43, and an air passage II 44. The piston 42 is located inside the cylinder body 41, and a push rod 2 is provided on the piston 42. A cylinder cover 45 is provided at the rear end of the cylinder body 41 for sealing between the push rod 2 and the cylinder body 41. An air passage I 43 is provided on the cylinder body 41 and an air passage II 44 is provided on the cylinder body 41. An air passage III 46 is provided on the cylinder cover 45 for communication between the air passage II 44 and the interior of the cylinder body 41.

[0018] The front end of the air blowing channel 5 passes through the piston 42, and the front end of the cylinder body 41 is provided with an air blowing pipe 14 that extends into the air blowing channel 5. The air blowing pipe 14 is sealed to the cylinder body 41 and the air blowing channel 5 by a sealing ring.

[0019] The rotary cylinder 1 is provided with a mounting base 7, the mounting base 7 is provided with a three-way rotary joint 8, the three-way rotary joint 8 is provided with a cylinder body 41, and the three channels of the three-way rotary joint 8 are respectively connected to air passage I 43, air passage II 44 and air blowing pipe 14.

[0020] The push rod 2 includes a front hollow rod 21, a middle hollow rod 22 and a rear hollow rod 23 that are screwed together in sequence. The cylinder cover 45 is provided with an anti-rotation sleeve 9 that is sleeved on the middle hollow rod 22. The anti-rotation sleeve 9 is provided with a positioning head 10. The middle hollow rod 22 is provided with a positioning groove 11 that cooperates with the positioning head 10.

[0021] A support sleeve 12 is provided between the central hollow rod 22 and the pull rod 15.

[0022] The chuck 3 is provided with a positioning sleeve 13 through which the push rod 2 can pass.

[0023] The working process of this utility model: In the operation of this utility model, a long-stroke pusher device for a high-end CNC lathe, compressed air enters the air blowing pipe 14 and air passage I43 through two passages of the three-way rotary joint 8, respectively. The compressed air output from the air blowing pipe 14 enters the air blowing channel 5 and is finally blown out from the air blowing hole 6 to clean up iron filings. The compressed air output from the air passage I43 enters the cylinder body 41 to push the piston 42 to move backward. The piston 42 drives the pusher rod 2 to move backward, thereby pushing out the workpiece in the non-clamped state of the chuck 3, realizing automatic unloading. When the piston 42 moves backward, the air in the cylinder body 41 behind it is discharged in sequence through the corresponding passages of air passage III46, air passage II44 and the three-way rotary joint 8.

[0024] After the material is fed, the compressed air supply to the passage connecting the three-way rotary joint 8 and the air passage I43 is stopped. The passage connecting the three-way rotary joint 8 and the air passage II44 is supplied with air. The compressed air passes through the air passage II44 and the air passage III46 in sequence, and finally enters the cylinder body 41 to push the piston 42 forward. The piston 42 drives the push rod 2 forward to return to its original position. When the piston 42 moves forward, the air in the cylinder body 41 in front of it is discharged through the corresponding passages of the air passage I43 and the three-way rotary joint 8 in sequence. Then the compressed air supply to the three-way rotary joint 8 is stopped.

[0025] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A long-stroke feeding device for a high-end CNC lathe, comprising a rotary cylinder (1), a pull rod (15), and a chuck (3), wherein the rotary cylinder (1) is connected to the chuck (3) via the pull rod (15), and both the piston rod and the pull rod (15) of the rotary cylinder (1) are hollow, characterized in that: The rotary cylinder (1) is provided with a drive mechanism (4) located inside its piston rod. The drive mechanism (4) is provided with a push rod (2) passing through the pull rod (15). The push rod (2) is provided with an air blowing channel (5). The front end of the air blowing channel (5) is connected to the air blowing pipe (14). The rear end of the push rod (2) is provided with a plurality of air blowing holes (6) connected to the air blowing channel (5).

2. The long-stroke feeding device for a high-end CNC lathe as described in claim 1, characterized in that: The drive mechanism (4) includes a cylinder body (41), a piston (42), an air passage I (43) and an air passage II (44). The cylinder body (41) is provided with a piston (42), and a push rod (2) is provided on the piston (42). The rear end of the cylinder body (41) is provided with a cylinder cover (45) for sealing between the push rod (2) and the cylinder body (41). The cylinder body (41) is provided with an air passage I (43) communicating with its interior. The cylinder body (41) is provided with an air passage II (44). The cylinder cover (45) is provided with an air passage III (46) for communicating between the air passage II (44) and the interior of the cylinder body (41).

3. The long-stroke feeding device for a high-end CNC lathe as described in claim 2, characterized in that: The front end of the air blowing channel (5) passes through the piston (42), and the front end of the cylinder body (41) is provided with an air blowing pipe (14) that extends into the air blowing channel (5). The air blowing pipe (14) is sealed with the cylinder body (41) and the air blowing channel (5) by a sealing ring.

4. The long-stroke feeding device for a high-end CNC lathe as described in claim 3, characterized in that: The rotary cylinder (1) is provided with a mounting base (7), the mounting base (7) is provided with a three-way rotary joint (8), the three-way rotary joint (8) is provided with a cylinder body (41), and the three passages of the three-way rotary joint (8) are respectively connected to air passage I (43), air passage II (44) and air blowing pipe (14).

5. The long-stroke feeding device for a high-end CNC lathe as described in claim 2, characterized in that: The push rod (2) includes a front hollow rod (21), a middle hollow rod (22) and a rear hollow rod (23) connected in sequence. The cylinder cover (45) is provided with an anti-rotation sleeve (9) sleeved on the middle hollow rod (22). The anti-rotation sleeve (9) is provided with a positioning head (10). The middle hollow rod (22) is provided with a positioning groove (11) that cooperates with the positioning head (10).

6. The long-stroke feeding device for a high-end CNC lathe as described in claim 5, characterized in that: A support sleeve (12) is provided between the central hollow rod (22) and the pull rod (15).

7. A long-stroke feeding device for a high-end CNC lathe as described in any one of claims 1 to 6, characterized in that: The chuck (3) is provided with a positioning sleeve (13) through which the push rod (2) can pass.

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