Cooling water pipeline structure for main bearing of centerless machine tool

Abstract

The utility model discloses a cooling water pipeline structure for a main bearing of a centerless machine tool, which belongs to the technical field of centerless machine tools and comprises a fixed box and a bearing seat, the bearing seat is fixedly sleeved at one end of the fixed box, a mounting seat is arranged at the other end of the fixed box, and a main shaft rod is mounted on the mounting seat. The end of the main shaft rod penetrates through an inner cavity of the fixing box and is fixedly connected to the inner side of a bearing in the bearing seat in a sleeving mode, the top of the bearing seat is fixedly connected with a liquid return pipe in a sleeving mode, and the end of the liquid return pipe is fixedly connected to the inner cavity of the fixing box in a sleeving mode. According to the utility model, when the cooling liquid in the fixed box needs to be replaced, the liquid discharge valve is opened to discharge the cooling liquid in the fixed box, and the threaded cover is detached to add new cooling liquid into the fixed box from the external threaded pipe, so that the function of conveniently replacing the cooling liquid is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of centerless machine tool, more particularly to a centerless machine tool main bearing cooling water pipe line structure. BACKGROUND

[0002] The centerless lathe is a machine tool for making centerless parts. Its working principle is based on the rotation of two center shafts, and the workpiece is placed between the two shafts. One of the center shafts is the main shaft, which rotates at high speed and is used to drive the rotation of the cutting tool. The other center shaft is the auxiliary shaft, which rotates at a slower speed and is used to position the workpiece and lubricate the workpiece. The main shaft needs to be supported by bearings during installation, but the bearings will generate high temperature during rotation.

[0003] After searching, the utility model patent with publication number CN215357527U discloses a centerless machine tool main bearing cooling water pipe line structure, which comprises a fixed box, a mounting seat is arranged on one end side wall of the fixed box, a bearing seat is arranged on the other end side wall of the fixed box, a bearing is installed in the bearing seat, a main shaft is installed on the mounting seat, the end of the main shaft away from the mounting seat penetrates through the side wall of the fixed box and is located in the bearing seat, the main shaft is inserted in the inner ring of the bearing, and a fixed pipe is fixedly connected between the inner bottom and the inner top of the fixed box; the structure of the patent is reasonable, the first cooling mechanism and the second cooling mechanism are arranged to effectively cool the bearing, avoid high temperature of the bearing after long-time work, and cause damage to the bearing, and the driving mechanism is arranged to drive the rotation of the main shaft as a driving source, so that an independent driving source is not needed, and energy consumption is reduced.

[0004] However, the above-mentioned patent still has the following disadvantages: it is inconvenient to replace the cooling liquid in the fixed box; and the reset of the first piston and the second piston needs the elastic force of the spring, but the elastic force of the spring will be lost after continuous stretching and contraction, affecting the movement of the subsequent piston. Therefore, we propose a centerless machine tool main bearing cooling water pipe line structure. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model aims to provide a centerless machine tool main bearing cooling water pipe line structure.

[0006] To solve the above problems, the utility model adopts the following technical scheme:

[0007] The utility model provides a kind of main bearing cooling water pipeline structure of centerless machine, including fixed box and bearing seat, the bearing seat is fixedly sleeved in one end of fixed box, the other end of fixed box is provided with mounting seat, main shaft rod is installed on the mounting seat, the end of main shaft rod penetrates the inner cavity of fixed box and is fixedly sleeved to the inside of bearing in bearing seat, the top of bearing seat is fixedly sleeved with back liquid pipe, the end of back liquid pipe is fixedly sleeved to the inner cavity of fixed box, the outside of main shaft rod and in the inner cavity of fixed box is fixedly sleeved with first bevel gear, the inner cavity of fixed box is provided with liquid driving mechanism, the top of fixed box is provided with external thread pipe, the top end of external thread pipe is threadedly installed with screw cap, the bottom of fixed box is fixedly installed with drainage valve, and the top end of drainage valve extends to the inner cavity of fixed box.

[0008] As a preferred scheme of the utility model, the liquid driving mechanism includes a suction cylinder fixedly connected to the inner cavity of the fixed box and a support seat, the support seat is rotatably connected with a transmission rod, the top end of the transmission rod is fixedly sleeved with a second bevel gear, the second bevel gear and the first bevel gear are meshed with each other, the bottom end of the transmission rod is fixedly sleeved with a rotating disc, the bottom surface of the rotating disc is rotatably connected with a transmission plate, the end of the transmission plate is rotatably connected with an extension column, the end of the extension column is movably sleeved into the inner cavity of the suction cylinder and fixedly connected with a piston plate, one side of one end of the piston plate is fixedly sleeved with a first one-way valve, the other side of one end of the piston plate is fixedly sleeved with a second one-way valve, the end of the second one-way valve is fixedly connected with a liquid delivery pipe, and the end of the liquid delivery pipe extends to the outside of the fixed box and is fixedly sleeved into the inside of the bearing seat.

[0009] As a preferred scheme of the utility model, the other end of the suction cylinder is provided with a liquid passing hole.

[0010] As a preferred scheme of the utility model, the side surface of the piston plate is attached to the inner wall of the suction cylinder.

[0011] As a preferred scheme of the utility model, the fixed box, the liquid driving mechanism, the first bevel gear and the main shaft rod are all made of stainless steel.

[0012] As a preferred scheme of the utility model, the top of the fixed box is fixedly sleeved with a perspective window.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] (1) In the utility model, when the cooling liquid in the fixed box needs to be replaced, the cooling liquid in the fixed box is discharged by opening the drainage valve, and the new cooling liquid is added into the fixed box from the external thread pipe by removing the screw cap, thereby achieving the function of conveniently replacing the cooling liquid.

[0015] (2) The utility model discloses, utilize main shaft stem drive first bevel gear rotation, through the cooperation of first bevel gear, second bevel gear, transmission rod, carousel, transmission plate and telescopic column drive piston plate reciprocating movement in the inner chamber of suction cylinder, through the reciprocating movement of piston plate in the inner chamber of suction cylinder makes the coolant of fixed box inner chamber flow in bearing seat, in order to cool the bearing in bearing seat, also avoided the failure situation that piston plate reset is driven through spring, good practicality. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic diagram of the utility model;

[0017] Figure 2 It is whole sectional view schematic diagram of the utility model;

[0018] Figure 3 It is sectional view schematic diagram of fixed box of the utility model;

[0019] Figure 4 It is sectional view schematic diagram of suction cylinder of the utility model;

[0020] Figure 5 It is structure schematic diagram of suction cylinder of the utility model.

[0021] Mark explanation in drawing:

[0022] 1, fixed box;2, mounting seat;3, bearing seat;4, main shaft stem;5, first bevel gear;6, drive liquid mechanism;7, back liquid pipe;8, outer thread pipe;9, threaded cover;10, liquid discharge valve;11, suction cylinder;13, support seat;14, transmission rod;15, second bevel gear;16, carousel;17, transmission plate;18, telescopic column;19, piston plate;20, first check valve;21, second check valve;22, liquid delivery pipe;23, liquid passing hole;24, perspective window. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the utility model.

[0024] In the description of the utility model, it needs to explain, the term "upper", "lower", "internal", "external", "top / bottom end" and so on indicate the orientation or position relation is based on the orientation or position relation shown in the drawing, only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element indicated must have a particular orientation, construct and operate in a particular orientation, therefore, it cannot be understood as the limitation of the utility model. In addition, the term "first", "second" is only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it needs to explain, unless otherwise specified and limited, the term "installation", "set with", "sleeve / interfacing", "connection" and so on, should be broad understanding, for example, "connection", can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Embodiment:

[0027] Please refer to Figures 1-5 A centerless machine tool main bearing cooling water pipe structure, including fixed box 1 and bearing seat 3, bearing seat 3 fixed sleeve connection in one end of fixed box 1, the other end of fixed box 1 is provided with mounting seat 2, the mounting seat 2 is installed with main shaft 4, the end of main shaft 4 penetrates the inner cavity of fixed box 1 and is fixedly sleeved to the inside of bearing in bearing seat 3, the top of bearing seat 3 is fixedly sleeved with back liquid pipe 7, the end of back liquid pipe 7 is fixedly sleeved to the inner cavity of fixed box 1, the outside of main shaft 4 and located in the inner cavity of fixed box 1 is fixedly sleeved with first bevel gear 5, the inner cavity of fixed box 1 is provided with liquid driving mechanism 6, the top of fixed box 1 is provided with external thread pipe 8, the top end of external thread pipe 8 is screw mounted with screw cap 9, the bottom of fixed box 1 is fixedly installed with drainage valve 10, the top end of drainage valve 10 extends to the inner cavity of fixed box 1.

[0028] In the embodiment, the inner cavity of fixed box 1 is provided with cooling liquid, which can be a mixture of ethylene glycol and water.

[0029] Specifically, please refer to Figures 3 to 5The driving liquid mechanism 6 comprises a suction cylinder 11 fixedly connected in the inner cavity of the fixed box 1 and a supporting seat 13, the supporting seat 13 is rotationally connected with a transmission rod 14, the top end of the transmission rod 14 is fixedly sleeved with a second bevel gear 15, the second bevel gear 15 and the first bevel gear 5 are in mesh with each other, the bottom end of the transmission rod 14 is fixedly sleeved with a rotating disc 16, the bottom surface of the rotating disc 16 is rotationally connected with a transmission plate 17, the end of the transmission plate 17 is rotationally connected with an extension column 18, the end of the extension column 18 is movably sleeved into the inner cavity of the suction cylinder 11 and is fixedly connected with a piston plate 19, one side of one end of the piston plate 19 is fixedly sleeved with a first one-way valve 20, the other side of one end of the piston plate 19 is fixedly sleeved with a second one-way valve 21, the end of the second one-way valve 21 is fixedly connected with a liquid delivery pipe 22, and the end of the liquid delivery pipe 22 extends to the outside of the fixed box 1 and is fixedly sleeved into the inner part of the bearing seat 3.

[0030] In the embodiment, the first one-way valve 20 can only make the cooling liquid in the inner cavity of the fixed box 1 enter into the suction cylinder 11, and the second one-way valve 21 can only make the cooling liquid in the inner cavity of the suction cylinder 11 be discharged.

[0031] Specifically, please refer to Figure 5 The other end of the suction cylinder 11 is provided with a liquid passing hole 23.

[0032] In the embodiment, the liquid passing hole 23 avoids the other end of the inner cavity of the suction cylinder 11 from generating negative pressure or high pressure, and ensures that the piston plate 19 can be smoothly moved in the inner cavity of the suction cylinder 11.

[0033] Specifically, please refer to Figure 4 The side surface of the piston plate 19 is in abutment with the inner wall of the suction cylinder 11.

[0034] In the embodiment, the movement of the piston plate 19 can make one end of the inner cavity of the suction cylinder 11 generate suction force and thrust force, so as to make the cooling liquid in the inner cavity of the fixed box 1 be sucked into the inner cavity of the suction cylinder 11 through the first one-way valve 20, and make the cooling liquid in the inner cavity of the suction cylinder 11 be guided into the inner side of the bearing seat 3 through the second one-way valve 21 and the liquid delivery pipe 22 to cool the bearing.

[0035] Specifically, please refer to Figures 1 to 3 The fixed box 1, the driving liquid mechanism 6, the first bevel gear 5 and the main shaft rod 4 are all made of stainless steel.

[0036] In the embodiment, the fixed box 1, the driving liquid mechanism 6, the first bevel gear 5 and the main shaft rod 4 are avoided from being corroded by the influence of the cooling liquid.

[0037] Specifically, please refer to Figure 1 The top of the fixed box 1 is fixedly sleeved with a perspective window 24.

[0038] In the embodiment, the situation of the cooling liquid in the inner cavity of the fixed box 1 is controlled through the perspective window 24.

[0039] Working principle: when the main shaft rod 4 rotates, the first bevel gear 5 rotates synchronously, through the meshing transmission between the first bevel gear 5 and the second bevel gear 15, the transmission rod 14 and the rotating disc 16 are rotated, through the rotation of the rotating disc 16 and the transmission of the transmission plate 17, the telescopic column 18 moves transversely and reciprocally, through the telescopic column 18, the piston plate 19 moves reciprocally in the inner cavity of the suction cylinder 11, when the piston plate 19 moves to the direction close to the bearing seat 3, suction force is generated at one end of the inner cavity of the suction cylinder 11, through the first one-way valve 20, the cooling water in the inner cavity of the fixed box 1 is sucked into the inner cavity of the suction cylinder 11, when the piston plate 19 moves to the direction away from the bearing seat 3, the piston plate 19 pushes the cooling water in the inner cavity of the suction cylinder 11, so that the water in the inner cavity of the suction cylinder 11 is guided into the inside of the bearing seat 3 from the second one-way valve 21 and the infusion pipe 22, and the cooling water in the inside of the bearing seat 3 is guided back to the inner cavity of the fixed box 1 from the liquid return pipe 7, the water flowing in the bearing seat 3 is used to cool the bearing;

[0040] In addition, the cooling liquid condition in the inner cavity of the fixed box 1 can be controlled through the perspective window 24, when it is needed to replace the cooling liquid, the drainage valve 10 is opened to drain the cooling liquid, after draining, the threaded cap 9 is removed, the new cooling liquid is added into the fixed box 1 from the outer threaded pipe 8, and the replacement of the cooling liquid is realized.

[0041] The above is only the preferred specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the improvement concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A structure of a main bearing cooling water pipeline of a centerless machine tool spindle, comprising a fixed box (1) and a bearing seat (3), characterized in that: The bearing seat (3) is fixedly sleeved at one end of the fixed box (1), the other end of the fixed box (1) is provided with a mounting seat (2), the mounting seat (2) is installed with a main shaft rod (4), the end of the main shaft rod (4) penetrates the inner cavity of the fixed box (1) and is fixedly sleeved to the inner side of the bearing in the bearing seat (3), the top of the bearing seat (3) is fixedly sleeved with a liquid return pipe (7), the end of the liquid return pipe (7) is fixedly sleeved to the inner cavity of the fixed box (1), the outer side of the main shaft rod (4) and located in the inner cavity of the fixed box (1) is fixedly sleeved with a first bevel gear (5), the inner cavity of the fixed box (1) is provided with a liquid driving mechanism (6), the top of the fixed box (1) is provided with an external threaded pipe (8), the top end of the external threaded pipe (8) is threadedly installed with a threaded cover (9), the bottom of the fixed box (1) is fixedly installed with a liquid discharge valve (10), the top end of the liquid discharge valve (10) extends to the inner cavity of the fixed box (1).

2. The main shaft cooling water line structure of a centerless machine bed according to claim 1, characterized in that: The liquid driving mechanism (6) comprises a suction cylinder (11) and a supporting seat (13) fixedly connected in the inner cavity of the fixed box (1), the supporting seat (13) is rotatably connected with a transmission rod (14), the top end of the transmission rod (14) is fixedly sleeved with a second bevel gear (15), the second bevel gear (15) and the first bevel gear (5) are meshed with each other, the bottom end of the transmission rod (14) is fixedly sleeved with a rotating disc (16), the bottom surface of the rotating disc (16) is rotatably connected with a transmission plate (17), the end of the transmission plate (17) is rotatably connected with an extension column (18), the end of the extension column (18) is movably sleeved to the inner cavity of the suction cylinder (11) and is fixedly connected with a piston plate (19), one side of one end of the piston plate (19) is fixedly sleeved with a first one-way valve (20), the other side of one end of the piston plate (19) is fixedly sleeved with a second one-way valve (21), the end of the second one-way valve (21) is fixedly connected with a liquid delivery pipe (22), the end of the liquid delivery pipe (22) extends to the outer side of the fixed box (1) and is fixedly sleeved to the inside of the bearing seat (3).

3. The spindle cooling water piping structure of a centerless machine bed according to claim 2, characterized in that: The other end of the suction cylinder (11) is provided with a liquid passing hole (23).

4. The spindle cooling water piping structure of the centerless machine bed according to claim 2, characterized by: The side surface of the piston plate (19) and the inner wall of the suction cylinder (11) are in close contact.

5. The spindle cooling water piping structure of the centerless machine bed according to claim 2, characterized by: The fixed box (1), the liquid driving mechanism (6), the first bevel gear (5) and the main shaft rod (4) are all made of stainless steel.

6. The spindle cooling water piping structure of a centerless machine bed according to claim 1, characterized in that: The top of the fixed box (1) is fixedly sleeved with a perspective window (24).

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