Fine processing device for inner diameter of central hollow shaft

Abstract

The utility model discloses a fine processing device for the inner diameter of a central hollow shaft, which relates to the technical field of hollow shaft inner diameter processing, and comprises a three-jaw chuck for fixing the central hollow shaft, and a manhole shaft rod corresponding to the three-jaw chuck is arranged on one side of the three-jaw chuck. The side, close to the three-jaw chuck, of the manhole shaft rod is fixedly connected with a cylindrical polishing head, and the outer side of the cylindrical polishing head is fixedly connected with a spiral polishing piece. The outer side of the manhole shaft rod is movably connected with a sliding seat, the bottom of the sliding seat is movably connected with a bidirectional driver, the end part of the bidirectional driver is in transmission connection with the end part of the manhole shaft rod, and the outer side of the sliding seat is movably connected with a fixed seat; according to the cylindrical grinding device, the driving motor drives the hole detecting shaft rod to rotate through transmission connection to grind a hole, the sliding seat is driven to move and rotate through the bidirectional driver while grinding is conducted, the cylindrical grinding head is fed at the same time, manual movement is not needed, and the grinding efficiency is improved.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of inner diameter processing of hollow shafts, and specifically is a fine processing device for the inner diameter of a central hollow shaft. Background Technique

[0002] A central hollow shaft generally refers to a shaft-shaped component located at the center and hollow inside in a mechanical structure or device. In some complex systems, the internal space of the central hollow shaft can be used to arrange wires, cables, oil pipes, gas pipes, etc., making the whole system cleaner and more compact. After the central hollow shaft is produced, it is also necessary to polish the burrs on the inner side of the hole to ensure the smoothness of the inner side of the hole.

[0003] However, in practice, it has been noted that most current polishing devices generally use a polishing rod to polish the hole. Since the hole diameter is relatively narrow, manual polishing is generally used for hole polishing. Long-term manual polishing will cause worker fatigue, thus affecting the polishing efficiency of the central hollow shaft, and the polishing time for different positions of the hole is different, which easily causes uneven polishing effects on the inner side of the hole, thus affecting the polishing effect of the hole. Content of the Utility Model

[0004] The purpose of the utility model is to provide a fine processing device for the inner diameter of a central hollow shaft, in which a driving motor drives a hole-probing shaft rod to rotate, the power is transmitted through a bidirectional driver, and then cooperates with the rack in the rectangular groove to realize automatic feeding while polishing, improving the processing efficiency and processing effect of the central hollow shaft. To solve the technical problems proposed in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A fine processing device for the inner diameter of a central hollow shaft, including a three-jaw chuck for fixing the central hollow shaft, a hole-probing shaft rod corresponding to the three-jaw chuck is arranged on one side of the three-jaw chuck, a cylindrical grinding head is fixedly connected to the side of the hole-probing shaft rod close to the three-jaw chuck, and a spiral polishing sheet is fixedly connected to the outside of the cylindrical grinding head;

[0007] The outside of the hole-probing shaft rod is movably connected with a sliding seat, the bottom of the sliding seat is movably connected with a bidirectional driver, and the end of the bidirectional driver is in transmission connection with the end of the hole-probing shaft rod, and the outside of the sliding seat is movably connected with a fixed seat;

[0008] The hole-probing shaft rod includes a transmission rod, bearings and first bevel gears are respectively in interference fit at the two ends of the transmission rod, and mounting planes and rectangular positioning holes are arranged in an annular array at the other end of the transmission rod.

[0009] As a further technical solution of the utility model, a rectangular insertion rod is integrally provided on one side of the cylindrical grinding head close to the transmission rod, and the rectangular insertion rod is inserted into the rectangular positioning hole at the end of the transmission rod, and a locking bolt is threadedly connected at the connection between the rectangular insertion rod and the transmission rod.

[0010] As a further technical solution of the utility model, the sliding seat includes a C-shaped connecting seat. Sliding ear plates are integrally provided on both sides of the end of the C-shaped connecting seat. A supporting vertical plate is welded on the top of the C-shaped connecting seat. A positioning hole for installing a bearing is provided on the supporting vertical plate, and bearing end covers are bolted and fixed on both sides of the positioning hole.

[0011] As a further technical solution of the utility model, the outer ring of the bearing is in interference fit with the positioning hole on the supporting vertical plate, and the bearing end covers cover both sides of the bearing. The end of the transmission rod penetrates through the bearing end cover and extends above the bidirectional driver.

[0012] As a further technical solution of the utility model, the bidirectional driver includes a transmission gear and a transmission shaft movably connected in the C-shaped connecting seat. Corresponding positioning shaft holes are provided on the C-shaped connecting seat. The end of the transmission shaft penetrates through the positioning shaft hole and is in interference connection with the transmission gear. The other end of the transmission shaft is fixedly connected with a moving gear.

[0013] As a further technical solution of the utility model, the side of the transmission gear is in transmission connection with a driving gear. The top of the driving gear is fixedly connected with a second bevel gear. The first bevel gear is located above the second bevel gear, and the first bevel gear and the second bevel gear are meshed with each other.

[0014] As a further technical solution of the utility model, a driving motor is fixedly connected to the side of the supporting vertical plate. The end of the driving motor is fixedly connected with a driving bevel gear. The driving bevel gear is located above the first bevel gear, and the first bevel gear and the driving bevel gear are meshed with each other.

[0015] As a further technical solution of the utility model, the fixed seat includes an L-shaped support plate. Limiting sliding rods corresponding to the sliding ear plates are integrally provided on both sides of the L-shaped support plate. The sliding ear plates are slidably connected with the limiting sliding rods.

[0016] As a further technical solution of the utility model, a supporting end cover is fixedly connected to the end of the L-shaped support plate, and the upper part of the supporting end cover is fixedly connected to the end of the limiting sliding rod. The transmission gear is located above the limiting sliding rod.

[0017] As a further technical solution of the utility model, a rectangular groove is provided at the bottom of the L-shaped support plate, and a rack is integrally provided on one side inside the rectangular groove. The moving gear is inserted inside the rectangular groove; the rack in the rectangular groove is located on the side of the moving gear, and the rectangular groove and the moving gear are meshed with each other.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] 1. In the present utility model, the driving motor drives the hole-probing shaft rod to rotate through transmission connection, so that the hole-probing shaft rod drives the cylindrical grinding head fixed at the end to rotate, and the hole is ground. While grinding, the sliding seat is driven to move by the bidirectional driver, and the cylindrical grinding head is fed while rotating, without manual movement, improving the grinding efficiency;

[0020] 2. In the present utility model, while the first bevel gear rotates, it drives the second bevel gear to rotate. The second bevel gear drives the moving gear to rotate through the transmission connection between the driving gear and the transmission gear. The feeding speed is slowed down through the transmission ratio between the driving gear and the transmission gear, ensuring full contact between the rotating cylindrical grinding head and the inner wall of the cavity, and improving the grinding effect;

[0021] 3. In the present utility model, the end of the transmission rod is respectively provided with an installation plane and a rectangular positioning hole, which facilitates the staff to fix the cylindrical grinding head at the end of the transmission rod and is convenient for disassembling the cylindrical grinding head. At the same time, the spiral polishing sheet can further improve the grinding efficiency of the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the present utility model in the use state.

[0023] Figure 2 is in the present utility model Figure 1 another perspective view.

[0024] Figure 3 is in the present utility model Figure 2 partial structural diagram.

[0025] Figure 4 is in the present utility model Figure 3 partial enlarged schematic diagram.

[0026] Figure 5 is in the present utility model Figure 3 bottom structural diagram.

[0027] Figure 6 is a three-dimensional structural diagram of the fixed seat in the present utility model.

[0028] Figure 7 is in the present utility model Figure 6 partial enlarged schematic diagram.

[0029] Figure 8 is a three-dimensional structural diagram of the sliding seat in the present utility model.

[0030] Figure 9 It is a three-dimensional structural schematic diagram of the sliding seat in the present utility model.

[0031] Figure 10 It is a positional structural schematic diagram of the bidirectional driver and the hole-probing shaft rod in the present utility model.

[0032] Figure 11 In the present utility model Figure 10 Partial enlarged schematic diagram.

[0033] Figure 12 In the present utility model Figure 10 Another perspective view.

[0034] In the figure:

[0035] Base - 1, fixing plate - 2, three-jaw chuck - 3, bushing support - 4, fixed seat - 5, L-shaped support plate - 51, limit slide bar - 52, support end cover - 53, rectangular groove - 54, sliding seat - 6, C-shaped connecting seat - 61, sliding ear plate - 62, support vertical plate - 63, bearing end cover - 64, positioning shaft hole - 65, bidirectional driver - 7, transmission gear - 71, transmission shaft - 72, moving gear - 73, driving gear - 74, second bevel gear - 75, hole-probing shaft rod - 8, transmission rod - 81, bearing - 82, first bevel gear - 83, installation plane - 84, rectangular positioning hole - 85, driving motor - 9, driving bevel gear - 91, cylindrical grinding head - 10, spiral polishing piece - 101. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] Please refer to Figures 1-12 , the embodiments of the present utility model provide a device for fine processing of the inner diameter of a central hollow shaft, including a three-jaw chuck 3 for fixing the central hollow shaft. A hole-probing shaft rod 8 corresponding to the three-jaw chuck 3 is provided on one side of the three-jaw chuck 3. A cylindrical grinding head 10 is fixedly connected to the side of the hole-probing shaft rod 8 close to the three-jaw chuck 3, and a spiral polishing piece 101 is fixedly connected to the outside of the cylindrical grinding head 10;

[0038] The outside of the hole-probing shaft rod 8 is movably connected with a sliding seat 6. The bottom of the sliding seat 6 is movably connected with a bidirectional driver 7, and the end of the bidirectional driver 7 is in transmission connection with the end of the hole-probing shaft rod 8. The outside of the sliding seat 6 is movably connected with a fixed seat 5;

[0039] The described probing shaft rod 8 includes a transmission rod 81. At the end parts of the transmission rod 81, a bearing 82 and a first bevel gear 83 are respectively in interference fit. At the other end of the transmission rod 81, mounting planes 84 and rectangular positioning holes 85 are arranged in an annular array.

[0040] In this embodiment, on the side of the cylindrical grinding head 10 close to the transmission rod 81, a rectangular insertion rod is integrally provided, and the rectangular insertion rod is inserted into the rectangular positioning hole 85 at the end of the transmission rod 81, and a locking bolt is threadedly connected at the connection part between the rectangular insertion rod and the transmission rod 81.

[0041] In this embodiment, the sliding seat 6 includes a C-shaped connecting seat 61. On both sides of the end part of the C-shaped connecting seat 61, sliding ear plates 62 are integrally provided. On the top of the C-shaped connecting seat 61, a supporting vertical plate 63 is welded. A positioning hole for mounting a bearing is provided on the supporting vertical plate 63, and bearing end covers 64 are bolted on both sides of the positioning hole.

[0042] In this embodiment, the outer ring of the bearing 82 is in interference fit with the positioning hole on the supporting vertical plate 63, and the bearing end covers 64 cover both sides of the bearing 82. The end part of the transmission rod 81 penetrates through the bearing end cover 64 and extends above the bidirectional driver 7.

[0043] In this embodiment, the bidirectional driver 7 includes a transmission gear 71 and a transmission shaft 72 movably connected in the C-shaped connecting seat 61. A corresponding positioning shaft hole 65 is provided on the C-shaped connecting seat 61. The end part of the transmission shaft 72 penetrates through the positioning shaft hole 65 and is in interference connection with the transmission gear 71. The other end of the transmission shaft 72 is fixedly connected with a moving gear 73.

[0044] In this embodiment, the side surface of the transmission gear 71 is drivingly connected with a driving gear 74. On the top of the driving gear 74, a second bevel gear 75 is fixedly connected. The first bevel gear 83 is located above the second bevel gear 75, and the first bevel gear 83 and the second bevel gear 75 are meshed with each other.

[0045] In this embodiment, a driving motor 9 is fixedly connected to the side surface of the supporting vertical plate 63. At the end part of the driving motor 9, a driving bevel gear 91 is fixedly connected. The driving bevel gear 91 is located above the first bevel gear 83, and the first bevel gear 83 and the driving bevel gear 91 are meshed with each other.

[0046] In this embodiment, the fixed seat 5 includes an L-shaped support plate 51. On both sides of the L-shaped support plate 51, limiting slide rods 52 corresponding to the sliding ear plates 62 are integrally provided, and the sliding ear plates 62 are slidably connected with the limiting slide rods 52.

[0047] In this embodiment, the end of the L-shaped support plate 51 is fixedly connected to the support end cover 53 , and the upper part of the support end cover 53 is fixedly connected to the end of the limiting slide 52 , and the transmission gear 71 is located above the limiting slide 52 .

[0048] In this embodiment, a rectangular groove 54 is provided at the bottom of the L-shaped support plate 51, and a rack is integrally provided on one side of the interior of the rectangular groove 54, and the moving gear 73 is inserted into the inner side of the rectangular groove 54; the rack in the rectangular groove 54 is located on the side of the moving gear 73, and the rectangular groove 54 and the moving gear 73 are engaged with each other.

[0049] By adopting the above technical solution, the driving motor 9 drives the transmission rod 81 to rotate by driving the meshing between the bevel gear 91 and the first bevel gear 83, and the end of the transmission rod 81 drives the cylindrical grinding head 10 to rotate. While the first bevel gear 83 rotates, it drives the driving gear 74 to rotate through the second bevel gear 75, and then the transmission ratio between the driving gear 74 and the transmission gear 71 is used to slow down the rotation speed of the transmission shaft 72, driving the moving gear 73 to rotate on the inner side of the rectangular groove 54, and the side of the moving gear 73 engages with the rack in the rectangular groove 54, thereby driving the C-type connecting seat 61 to move, and the C-type connecting seat 61 drives the transmission rod 81 to move, and automatic feeding is performed while rotating and grinding, thereby improving the processing efficiency of the central hollow shaft.

[0050] In this embodiment, a plurality of spiral polishing sheets 101 are provided, and the plurality of spiral polishing sheets 101 are arranged in a circular array on the outside of the cylindrical grinding head 10 , and each of the spiral polishing sheets 101 is arranged in a spiral shape.

[0051] In this embodiment, one end of the L-shaped support plate 51 is integrally provided with a vertical upright plate, and an axial hole is opened on the vertical upright plate, and the end of the transmission rod 81 passes through the inner side of the axial hole to support the other end of the transmission rod 81, ensuring that the transmission rod 81 can slide horizontally when rotating, preventing the end of the transmission rod 81 from shaking due to centrifugal force, and improving the stability of the transmission rod 81 during rotation.

[0052] In this embodiment, the bottom of the L-shaped support plate 51 is fixedly connected to the base 1, and a fixing plate 2 is welded above the base 1 at a position corresponding to the fixing seat 5. A three-jaw chuck 3 is fixed to the side of the fixing plate 2. The end of the central hollow shaft passes through the fixing plate 2 and the three-jaw chuck 3, and the end of the central hollow shaft is clamped by the three-jaw chuck 3.

[0053] In this embodiment, a shaft sleeve bracket 4 fixedly connected to the base 1 is provided between the fixed plate 2 and the fixed seat 5. The shaft sleeve bracket 4 is arranged in a Y shape, and the outer side of the central hollow shaft is placed on the upper part of the shaft sleeve bracket 4 to support the central hollow shaft.

[0054] In this embodiment, the axis of the three-jaw chuck 3 coincides with the axis of the cylindrical grinding head 10 to ensure the centering accuracy when grinding the central hollow shaft.

[0055] The working principle of the present utility model is as follows: When in use, first pass the central hollow shaft through the round hole on the fixed plate 2 and the three-jaw chuck 3, then use the three-jaw chuck 3 to clamp the end of the central hollow shaft, and place the central hollow shaft above the sleeve bracket 4 to support the central hollow shaft. Then, the driving motor 9 drives the transmission rod 81 to rotate through the meshing of the driving bevel gear 91 and the first bevel gear 83. At the same time, the power is transmitted through the meshing of the first bevel gear 83 and the second bevel gear 75, so that the driving gear 74 meshes with the transmission gear 71 and drives the moving gear 73 to rotate through the transmission shaft 72. While the moving gear 73 rotates inside the rectangular groove 54, it meshes with the rack inside the rectangular groove 54, so that the transmission shaft 72 pushes the C-shaped connecting seat 61 to slide to the right in the limit slide rod 52. At the same time, the cylindrical grinding head 10 is driven to rotate through the transmission rod 81. The spiral polishing piece 101 on the outside of the cylindrical grinding head 10 grinds the hole in the central hollow shaft, realizes automatic movement while processing the hole, does not require manual feeding by workers, improves the grinding efficiency and grinding effect of the hole; the structure is simple, the operation is very convenient, and the manual labor intensity is effectively reduced.

[0056] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0057] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fine processing device for the inner diameter of a central hollow shaft, characterized in that: A three-jaw chuck (3) including a fixed central hollow shaft, a probe hole shaft rod (8) corresponding to the three-jaw chuck (3) is provided on one side of the three-jaw chuck (3), a cylindrical grinding head (10) is fixedly connected to the side of the probe hole shaft rod (8) close to the three-jaw chuck (3), and a spiral polishing piece (101) is fixedly connected to the outside of the cylindrical grinding head (10); A sliding seat (6) is movably connected to the outside of the probe hole shaft rod (8), a two-way driver (7) is movably connected to the bottom of the sliding seat (6), and the end of the two-way driver (7) is in transmission connection with the end of the probe hole shaft rod (8), and a fixed seat (5) is movably connected to the outside of the sliding seat (6); The probe hole shaft rod (8) includes a transmission rod (81), bearings (82) and first bevel gears (83) are respectively press-fitted at the ends of the transmission rod (81), and mounting planes (84) and rectangular positioning holes (85) are arranged in an annular array at the other end of the transmission rod (81).

2. The fine processing device for the inner diameter of the central hollow shaft according to claim 1, wherein: A rectangular insertion rod is integrally provided on the side of the cylindrical grinding head (10) close to the transmission rod (81), and the rectangular insertion rod is inserted into the rectangular positioning hole (85) at the end of the transmission rod (81), and a locking bolt is threadedly connected at the connection between the rectangular insertion rod and the transmission rod (81).

3. The fine processing device for the inner diameter of the central hollow shaft according to claim 2, characterized in that: The sliding seat (6) includes a C-shaped connection seat (61), sliding ear plates (62) are integrally provided on both sides of the end of the C-shaped connection seat (61), a support vertical plate (63) is welded on the top of the C-shaped connection seat (61), a positioning hole for installing a bearing is provided on the support vertical plate (63), and bearing end covers (64) are bolted on both sides of the positioning hole.

4. The fine processing device for the inner diameter of the central hollow shaft according to claim 3, wherein: The outer ring of the bearing (82) is in interference fit with the positioning hole on the support vertical plate (63), and the bearing end covers (64) cover both sides of the bearing (82), and the end of the transmission rod (81) penetrates through the bearing end cover (64) and extends above the two-way driver (7).

5. The fine processing device for the inner diameter of the central hollow shaft according to claim 4, wherein: The two-way driver (7) includes a transmission gear (71) and a transmission shaft (72) movably connected in the C-shaped connection seat (61), a corresponding positioning shaft hole (65) is provided on the C-shaped connection seat (61), the end of the transmission shaft (72) penetrates through the positioning shaft hole (65) and is in interference connection with the transmission gear (71), and a moving gear (73) is fixedly connected to the other end of the transmission shaft (72).

6. The fine processing device for the inner diameter of the central hollow shaft according to claim 5, characterized in that: The side of the transmission gear (71) is in transmission connection with a driving gear (74), a second bevel gear (75) is fixedly connected to the top of the driving gear (74), the first bevel gear (83) is located above the second bevel gear (75), and the first bevel gear (83) and the second bevel gear (75) are meshed with each other.

7. The fine processing device for the inner diameter of the central hollow shaft according to claim 3, wherein: A driving motor (9) is fixedly connected to the side of the support vertical plate (63), a driving bevel gear (91) is fixedly connected to the end of the driving motor (9), the driving bevel gear (91) is located above the first bevel gear (83), and the first bevel gear (83) and the driving bevel gear (91) are meshed with each other.

8. The fine processing device for the inner diameter of the central hollow shaft according to claim 1, characterized in that: The fixed seat (5) described above includes an L-shaped support plate (51). On both sides of the L-shaped support plate (51), there are integrally provided limit sliding rods (52) corresponding to the sliding ear plates (62), and the sliding ear plates (62) are slidably connected to the limit sliding rods (52).

9. The fine processing device for the inner diameter of the central hollow shaft according to claim 8, wherein: At the end of the L-shaped support plate (51), a support end cover (53) is fixedly connected, and above the support end cover (53), the end of the limit sliding rod (52) is fixedly connected. The transmission gear (71) is located above the limit sliding rod (52).

10. The fine processing device for the inner diameter of the central hollow shaft according to claim 9, characterized in that: At the bottom of the L-shaped support plate (51), a rectangular groove (54) is opened. On one side inside the rectangular groove (54), there is an integrally provided rack. The moving gear (73) is inserted inside the rectangular groove (54). The rack in the rectangular groove (54) is located on the side of the moving gear (73), and the rectangular groove (54) and the moving gear (73) are meshed with each other.

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