Piston shaft for inner cooling of main shaft

Abstract

The utility model relates to the technical field of piston shafts, and discloses a piston shaft for internal cooling of a main shaft, which comprises a hollow main shaft, a hollow plate is attached to the inner wall of the hollow main shaft, a hollow piston shaft is fixedly connected to the inner wall of the hollow plate, and a hollow cylinder is fixedly connected to the surface of the hollow piston shaft. Cylinders are attached to the surface of the hollow cylinder and the left side of the hollow plate, limiting rings are fixedly connected to the inner walls of the cylinders, the left side and the right side of each limiting ring make contact with the right side of the hollow cylinder and the left side of the hollow plate correspondingly, and volute spiral springs are fixedly connected to the inner wall of each limiting ring and the surface of the hollow piston shaft. Through the cooperation of the hollow plate, the hollow piston shaft, the hollow cylinder, the cylinder, the limiting ring, the volute spiral spring, the sliding ring, the rotating rod, the guide column, the positioning groove, the locking block and the locking groove, a user can complete the disassembly and assembly of the piston shaft by rotating the rotating rod, and then the disassembly and assembly between the piston shaft and the hollow main shaft are more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of piston shafts, in particular to a piston shaft used for inner cooling of a main shaft. Background Art

[0002] The existing machine tool spindle is mounted on the tool pull rod, the tool breaking rod is installed on the tool pull rod up and down and limited on the spindle wall, the front end of the tool pull rod is fixed with a rotary joint, the tool breaking rod is fixed on the tool breaking cylinder piston, and the rear end of the spindle is fixed with a centering plate, and the rear end face of the tool pull rod, the front end face of the centering plate and the inner wall of the spindle form a closed cavity, and the tool pull rod is provided with a central through hole connected to the cavity. When the spindle is normally processed, cooling water is introduced into the cavity and the central through hole for internal cooling of the spindle.

[0003] However, the piston shaft used for spindle internal cooling is mostly fixed to the spindle by multiple bolts. For example, Chinese patent publication No. CN206230319U discloses a piston shaft structure used for spindle internal cooling. Moreover, the bolts need tools to be tightened, which makes the disassembly and assembly between the piston shaft and the spindle more troublesome. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, such as: at present, the piston shaft used for spindle internal cooling is mostly fixed to the spindle by multiple bolts, and the bolts need to be tightened with tools, which makes the disassembly and assembly between the piston shaft and the spindle more troublesome, and a piston shaft for spindle internal cooling is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A piston shaft for spindle internal cooling, comprising a hollow spindle, the inner wall of the hollow spindle is fitted with a hollow plate, the inner wall of the hollow plate is fixedly connected to the hollow piston shaft, the surface of the hollow piston shaft is fixedly connected to a hollow cylinder, the surface of the hollow cylinder and the left side of the hollow plate are both fitted with a cylinder, the inner wall of the cylinder is fixedly connected to a limiting ring, the left and right sides of the limiting ring are respectively in contact with the right side of the hollow cylinder and the left side of the hollow plate, the inner wall of the limiting ring and the surface of the hollow piston shaft are both fixedly connected A scroll spring is provided, a slip ring is fitted on the surface of the hollow piston shaft, a rotating rod is fixedly connected to the surface of the slip ring and the inner wall of the cylinder, a guide column is fixedly connected to the inner wall of the hollow main shaft, a positioning groove is provided on the surface of the hollow plate, the inner wall of the positioning groove contacts the surface of the guide column, the surface of the guide column contacts the surface of the cylinder, a locking block is fixedly connected to the surface of the cylinder, a locking groove is provided on the side of the guide column close to the hollow piston shaft, and the inner wall of the locking groove contacts the surface of the locking block.

[0007] Preferably, an exhaust groove is provided on a side of the guide column away from the hollow piston shaft.

[0008] Preferably, a pulling rod is fitted on the surface of the hollow piston shaft and the inner wall of the hollow main shaft, a beating rod is fixedly connected to the inner wall of the pulling rod, positioning holes are provided on the upper and lower sides of the hollow main shaft, and the front and rear sides of the beating rod are in contact with the inner wall of the positioning hole.

[0009] Preferably, the length of the positioning hole is greater than the diameter of the knife-beating rod.

[0010] Preferably, a coil spring is fitted on the right side of the hollow plate, a connecting ring is fixedly connected to the right side of the coil spring, and a connecting column is fixedly connected to the surface of the connecting ring and the inner wall of the hollow main shaft.

[0011] Preferably, the maximum length of the coil spring is greater than the distance between the hollow plate and the connecting ring.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] (1) The utility model is provided with a hollow plate, a hollow piston shaft, a hollow cylinder, a barrel, a limit ring, a scroll spring, a sliding ring, a rotating rod, a guide column, a positioning groove, a locking block and a locking groove, wherein when the locking block is inserted into the locking groove, the elastic force of the scroll spring makes it impossible to separate the locking block from the locking groove, and the hollow piston shaft is fixed in the hollow main shaft through the cooperation of the locking block and the locking groove. When the locking block is separated from the locking groove, the hollow piston shaft can be directly driven from the hollow main shaft. At the same time, the rotating rod enables the user to directly rotate the locking block, and then the cooperation of the hollow plate, the hollow piston shaft, the hollow cylinder, the barrel, the limit ring, the scroll spring, the sliding ring, the rotating rod, the guide column, the positioning groove, the locking block and the locking groove makes it convenient to disassemble and assemble the piston shaft and the hollow main shaft.

[0014] (2) The utility model provides a coil spring, a connecting ring and a connecting column, wherein, when the hollow piston shaft is fixed in the hollow main shaft, the coil spring is compressed by the hollow plate. When the locking block is separated from the locking groove, the compressed coil spring exerts a thrust on the hollow plate, so that the user can more easily remove the hollow piston shaft from the hollow main shaft, thereby making it more convenient to separate the piston shaft from the hollow main shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a left view of the structure of the utility model;

[0017] Figure 3 It is a left view of the hollow plate of the utility model;

[0018] Figure 4 It is a left view of the cylinder in the utility model.

[0019] In the figure: 1. hollow main shaft; 2. hollow plate; 3. hollow piston shaft; 4. hollow cylinder; 5. cylinder; 6. limit ring; 7. scroll spring; 8. slip ring; 9. rotating rod; 10. guide column; 11. positioning groove; 12. locking block; 13. locking groove; 14. exhaust groove; 15. puller rod; 16. beater rod; 17. positioning hole; 18. spiral spring; 19. connecting ring; 20. connecting column. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0022] Embodiment 1:

[0023] Reference Figure 1-4, a piston shaft for spindle internal cooling, comprising a hollow spindle 1, a hollow plate 2 is fitted on the inner wall of the hollow spindle 1, a hollow piston shaft 3 is fixedly connected to the inner wall of the hollow plate 2, a hollow cylinder 4 is fixedly connected to the surface of the hollow piston shaft 3, a cylinder 5 is fitted on the surface of the hollow cylinder 4 and the left side of the hollow plate 2, a limiting ring 6 is fixedly connected to the inner wall of the cylinder 5, the left and right sides of the limiting ring 6 are respectively in contact with the right side of the hollow cylinder 4 and the left side of the hollow plate 2, the cylinder 5 is clamped on the hollow cylinder 4 through the limiting ring 6, a volute spring 7 is fixedly connected to the inner wall of the limiting ring 6 and the surface of the hollow piston shaft 3, a slip ring 8 is fitted on the surface of the hollow piston shaft 3, a rotating rod 9 is fixedly connected to the surface of the slip ring 8 and the inner wall of the cylinder 5, and the rotating rod 9 makes it more convenient for the user to rotate the cylinder 5, a guide column 10 is fixedly connected to the inner wall of the hollow spindle 1, the hollow plate 2 A positioning groove 11 is provided on the surface, and the inner wall of the positioning groove 11 contacts the surface of the guide column 10. Through the cooperation of the guide column 10 and the positioning groove 11, the hollow plate 2 cannot rotate in the hollow main shaft 1, and the surface of the guide column 10 contacts the surface of the cylinder 5. The surface of the cylinder 5 is fixedly connected with a locking block 12. A locking groove 13 is provided on the side of the guide column 10 close to the hollow piston shaft 3, and the inner wall of the locking groove 13 contacts the surface of the locking block 12. When the locking block 12 is inserted into the locking groove 13, the elastic force of the spiral spring 7 makes it impossible to separate the locking block 12 and the locking groove 13, and the hollow piston shaft 3 is fixed in the hollow main shaft 1 through the cooperation of the locking block 12 and the locking groove 13. When the locking block 12 is separated from the locking groove 13, the hollow piston shaft 3 can be directly driven from the hollow main shaft 1, and an exhaust groove 14 is provided on the side of the guide column 10 away from the hollow piston shaft 3.

[0024] A pulling rod 15 is fitted on the surface of the hollow piston shaft 3 and the inner wall of the hollow main shaft 1, and a beating rod 16 is fixedly connected to the inner wall of the pulling rod 15. Positioning holes 17 are provided on the upper and lower sides of the hollow main shaft 1, and the front and rear sides of the beating rod 16 are in contact with the inner wall of the positioning hole 17. The length of the positioning hole 17 is greater than the diameter of the beating rod 16. The beating rod 16 is positioned through the positioning hole 17, and the beating rod 16 can move left and right in the positioning hole 17.

[0025] Embodiment 2:

[0026] Reference Figure 1A coil spring 18 is fitted on the right side of the hollow plate 2, and a connecting ring 19 is fixedly connected to the right side of the coil spring 18. The maximum length of the coil spring 18 is greater than the distance between the hollow plate 2 and the connecting ring 19. The surface of the connecting ring 19 and the inner wall of the hollow main shaft 1 are fixedly connected with a connecting column 20. When the hollow piston shaft 3 is fixed in the hollow main shaft 1, the coil spring 18 is compressed by the hollow plate 2. When the locking block 12 is separated from the locking groove 13, the compressed coil spring 18 exerts a thrust on the hollow plate 2, so that the user can easily remove the hollow piston shaft 3 from the hollow main shaft 1, thereby making it more convenient to separate the piston shaft from the hollow main shaft 1.

[0027] In the utility model, when the user installs the piston shaft, the user first inserts the hollow plate 2 into the hollow main shaft 1 and makes the guide column 10 contact with the positioning groove 11. Then, by rotating the rotating rod 9, the locking block 12 is staggered with the guide column 10, and the hollow piston shaft 3 is continued to move to the right. When the locking block 12 and the locking groove 13 are in the same vertical direction, the locking block 12 is inserted into the locking groove 13 by rotating the rotating rod 9, and the elastic force of the spiral spring 7 makes it impossible to separate the locking block 12 from the locking groove 13. At this time, the piston shaft can be fixed in the hollow main shaft 1 through the cooperation of the locking block 12 and the locking groove 13, and the coil spring 18 is in a compressed state. When the user needs to disassemble the piston shaft, the locking block 12 is separated from the locking groove 13 by rotating the rotating rod 9. Then, the piston shaft can be pushed out of the hollow main shaft 1 through the thrust of the spiral spring 18 on the hollow plate 2.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. A piston shaft for spindle internal cooling, comprising a hollow spindle (1), characterized in that: The inner wall of the hollow main shaft (1) is fitted with a hollow plate (2), the inner wall of the hollow plate (2) is fixedly connected with a hollow piston shaft (3), the surface of the hollow piston shaft (3) is fixedly connected with a hollow cylinder (4), the surface of the hollow cylinder (4) and the left side of the hollow plate (2) are both fitted with a cylinder (5), the inner wall of the cylinder (5) is fixedly connected with a limiting ring (6), the left and right sides of the limiting ring (6) are respectively in contact with the right side of the hollow cylinder (4) and the left side of the hollow plate (2), the inner wall of the limiting ring (6) and the surface of the hollow piston shaft (3) are both fixedly connected with a volute spring (7), the surface of the hollow piston shaft (3) A slip ring (8) is fitted, and a rotating rod (9) is fixedly connected to the surface of the slip ring (8) and the inner wall of the cylinder (5); a guide column (10) is fixedly connected to the inner wall of the hollow main shaft (1); a positioning groove (11) is provided on the surface of the hollow plate (2); the inner wall of the positioning groove (11) contacts the surface of the guide column (10); the surface of the guide column (10) contacts the surface of the cylinder (5); a locking block (12) is fixedly connected to the surface of the cylinder (5); a locking groove (13) is provided on the side of the guide column (10) close to the hollow piston shaft (3); the inner wall of the locking groove (13) contacts the surface of the locking block (12).

2. A piston shaft for spindle internal cooling according to claim 1, characterized in that: An exhaust groove (14) is provided on the side of the guide column (10) away from the hollow piston shaft (3).

3. The piston shaft for spindle internal cooling according to claim 1, characterized in that: A knife-pulling rod (15) is fitted on the surface of the hollow piston shaft (3) and the inner wall of the hollow main shaft (1), and a knife-beating rod (16) is fixedly connected to the inner wall of the knife-pulling rod (15). Positioning holes (17) are provided on the upper and lower sides of the hollow main shaft (1), and the front and rear sides of the knife-beating rod (16) are in contact with the inner wall of the positioning hole (17).

4. A piston shaft for spindle internal cooling according to claim 3, characterized in that: The length of the positioning hole (17) is greater than the diameter of the knife-beating rod (16).

5. The piston shaft for spindle internal cooling according to claim 1, characterized in that: A coil spring (18) is fitted on the right side of the hollow plate (2), a connecting ring (19) is fixedly connected to the right side of the coil spring (18), and a connecting column (20) is fixedly connected to the surface of the connecting ring (19) and the inner wall of the hollow main shaft (1).

6. A piston shaft for spindle internal cooling according to claim 5, characterized in that: The maximum length of the coil spring (18) is greater than the distance between the hollow plate (2) and the connecting ring (19).

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