Shaft neck polishing device

Abstract

The utility model relates to the technical field of polishing, in particular to a shaft neck polishing device which comprises a telescopic seat, a shaft neck and a shaft neck, one end of the movable sleeve sleeves the telescopic seat, and a spring is arranged between the movable sleeve and the telescopic seat; and the polishing tile is hinged to the other end of the moving sleeve, the polishing tile is provided with an arc matched with the polishing journal, and polishing abrasive paper is laid on the inner side of the arc. Polishing pressure can be controlled through the spring, during operation, the cambered surface of the polishing abrasive paper is attached to the outer circle of the journal, the lathe tool rest moves towards the journal, the movable sleeve moves along with the movable sleeve and compresses the spring, certain pressure is exerted on the journal on the polishing tile, the liner and the polishing abrasive paper, and damage to the journal caused by rigid pressing polishing can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of polishing, in particular to a journal polishing device. Background Art

[0002] When machining large crankshafts, the main journal and crankshaft journal have surface roughness requirements, which are difficult to meet by turning. Large crankshafts are large in size and there are no suitable grinders.

[0003] Since the crankshaft main journal and the crankshaft journal are located in the narrow space between the two crank arms, the polishing machine is installed on the lathe, but it cannot be operated in the narrow space due to space limitations. In addition, when turning the crankshaft journal, the crankshaft journal is kept stationary, the tool is installed on the slewing ring, and the turning is rotated around the crankshaft journal, so the polishing machine cannot be installed.

[0004] The Chinese invention patent with the announcement number CN114619354A discloses a crankshaft main journal polishing device and polishing method, including a polishing block arranged on a machine tool turret, and a folded sandpaper attached to the surface of the crankshaft main journal. One end of the polishing block is provided with a convex block for installation, and the other end has a concave arc surface matching the outer cylindrical surface of the crankshaft main journal to press the folded sandpaper on the outer cylindrical surface of the crankshaft main journal. The outer cylindrical surface of the crankshaft main journal is polished by the folded sandpaper squeezed by the polishing block. The use of the polishing block is stable, the surface force can be uniform, the straightness of the workpiece is better, and the machine polishing efficiency is higher. The polishing block contacts the journal lathe turret and changes to a stationary state. In order to achieve the polishing effect, the polishing block needs to be pressed on the journal, and the pressure is applied by the movement of the lathe turret to turn to a stationary state. At this time, the polishing block and the journal are in hard contact, which is easy to damage the journal. In addition, after the polishing block is installed on the lathe turret, the polishing arc surface and the journal will produce a non-concentric phenomenon, which affects the polishing. Utility Model Content

[0005] The purpose of the utility model is to provide a journal polishing device to solve the problems existing in the prior art. In order to achieve the above purpose, the utility model solves the problem through the following technical solutions:

[0006] The utility model provides a journal polishing device, comprising:

[0007] Telescopic seat, used to connect with the machine tool turret;

[0008] A movable sleeve, one end of which is sleeved on the telescopic seat and a spring is provided between the two;

[0009] The polishing shoe is hinged at the other end of the moving sleeve. The polishing shoe has an arc matched with the polishing journal, and polishing sandpaper is laid on the inner side of the arc.

[0010] As a further technical solution, the telescopic seat has an axis structure, the movable sleeve has a cylindrical structure, and the movable sleeve is sleeved on the axis structure through the cylindrical structure.

[0011] As a further technical solution, a guide shaft is provided on the shaft structure, and a guide groove matching with the guide shaft is provided on the cylindrical structure.

[0012] As a further technical solution, two torsion springs with opposite elastic forces are provided at the hinge between the polishing shoe and the movable sleeve.

[0013] As a further technical solution, the polishing shoe and the movable sleeve are hinged via a hinge shaft, and the torsion spring is installed on the hinge shaft.

[0014] As a further technical solution, the outer side of the circular arc of the polishing tile has a triangular structure, and the triangular structure is hinged to the movable sleeve.

[0015] As a further technical solution, the hinge point, the arc midpoint and the arc center point on the polishing tile are collinear.

[0016] As a further technical solution, a pad is provided between the inner side of the circular arc of the polishing shoe and the polishing sandpaper.

[0017] As a further technical solution, the gasket is mounted on the polishing tile by screws.

[0018] As a further technical solution, the polishing sandpaper extends to the outside of the polishing tile and is pressed by arranging a flat iron.

[0019] The beneficial effects of the above utility model are as follows:

[0020] (1) The utility model can provide polishing pressure through the spring. During operation, the arc surface of the polishing sandpaper is attached to the outer circle of the journal, and the lathe tool holder moves toward the journal, so that the movable sleeve moves and compresses the spring, so that a certain pressure is applied to the polishing shoe, the liner, and the polishing sandpaper on the journal, thereby avoiding damage to the journal due to rigid compression polishing.

[0021] (2) The polishing pad of the utility model is hinged on the movable sleeve, and the polishing pad can swing around the hinge axis so that the polishing arc surface is concentrically fitted with the outer circle of the shaft neck, thereby avoiding the problem that the polishing arc surface is not concentric with the shaft neck after the device is installed on the lathe tool holder.

[0022] (3) The utility model provides two torsion springs with opposite elastic forces at the hinge between the polishing pad and the movable sleeve, so that the polishing pad is subjected to spring force when swinging. At the same time, the torsion springs provide a pressing force to the arc surface to ensure the polishing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their description are used to explain the present invention and do not constitute a limitation of the present invention. It should also be understood that these drawings are shown for simplicity and clarity and are not necessarily drawn to scale. The present invention will now be described and explained with additional features and details through the use of the drawings, in which:

[0024] Figure 1 It shows a front view of the journal polishing device in the embodiment of the utility model;

[0025] Figure 2 A top view of a journal polishing device in an embodiment of the utility model is shown;

[0026] Figure 3 Shows a front view of a polishing tile in an embodiment of the utility model;

[0027] Figure 4 A side view of a polishing tile in an embodiment of the utility model is shown;

[0028] Figure 5 It shows the front view of the liner tile in the embodiment of the utility model;

[0029] Figure 6 A side view of a liner tile in an embodiment of the utility model is shown;

[0030] Figure 7 It shows the front view of the telescopic seat in the embodiment of the utility model;

[0031] Figure 8 A top view of a telescopic seat in an embodiment of the utility model is shown;

[0032] Fig. 9 It shows the front view of the mobile sleeve in the embodiment of the utility model;

[0033] Fig.10 A top view of the moving sleeve in an embodiment of the utility model is shown;

[0034] Fig.11 The schematic diagram of the flat iron structure in the embodiment of the utility model is shown.

[0035] In the figure: 1. telescopic seat; 2. spring; 3. movable sleeve; 4. guide shaft; 5. torsion spring; 6. hinge shaft; 7. polishing tile; 8. gasket; 9. polishing sandpaper; 10. screw; 11. flat iron. DETAILED DESCRIPTION

[0036] The technical solutions in typical embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0037] like Figure 1 and Figure 2 As shown, this embodiment provides a journal polishing device, including a telescopic seat 1, a movable sleeve 2, a polishing tile 7, a gasket 8 and a polishing sandpaper 9.

[0038] like Figure 7 and Figure 8 As shown, the telescopic seat 1 is used to connect with the tool post of the lathe. Specifically, one end of the telescopic seat 1 is a square pressing block, which is used to be fixed on the tool post of the lathe. The other end of the telescopic seat 1 is a shaft structure.

[0039] One end of the movable sleeve 3 is sleeved on the telescopic seat 1 and a spring 2 is arranged between the two. The movable sleeve 3 has a cylindrical structure, and the movable sleeve 3 is sleeved on the shaft structure of the telescopic seat 1 through the cylindrical structure. It can be understood that the cylindrical structure of the movable sleeve 3 is compatible with the shaft structure of the telescopic seat 1. The spring 2 is sleeved on the shaft structure of the telescopic seat 1 and abuts on the end surface of the sleeve structure of the movable sleeve 3. When the movable sleeve 3 is forced to move backward, it is subjected to the spring force.

[0040] Polishing pressure can be provided by spring 2. During operation, the arc surface of polishing sandpaper 9 is fitted to the outer circle of the journal, and the lathe tool holder moves toward the journal, so that the movable sleeve 3 moves and compresses the spring 2, giving a certain pressure to the polishing shoe 7, gasket 8, and polishing sandpaper 9 on the journal, which can avoid damage to the journal due to rigid compression polishing.

[0041] like Figure 1 , Figure 2 , Fig. 9 and Fig.10 As shown, the shaft structure is provided with a guide shaft 4, and the cylindrical structure is provided with a guide groove matched with the guide shaft 4. The cylindrical structure is provided with two guide grooves correspondingly, and the guide grooves are closed grooves. The guide shaft 4 of the telescopic seat 1 can slide in the guide groove to achieve the guiding function. At the same time, since the guide groove is closed, it is ensured that the telescopic seat 1 cannot be arbitrarily removed from the movable sleeve 3.

[0042] like Figure 1 , Figure 2 ,like Figure 3 and Figure 4 As shown, the polishing shoe 7 is hinged at the other end of the moving sleeve 3, the polishing shoe 7 has an arc that matches the polishing journal, and polishing sandpaper 9 is laid on the inner side of the arc.

[0043] The polishing shoe 7 is hinged on the movable sleeve 3, and the polishing shoe 7 can rotate around the hinge shaft 6 to make the polishing arc surface concentrically fit with the outer circle of the shaft neck, avoiding the problem of the polishing arc surface and the shaft neck being non-concentric after the device is installed on the lathe tool holder.

[0044] The outer side of the circular arc of the polishing tile 7 has a triangular structure, the triangular structure has a hinge straight groove and a hinge hole, and the triangular structure is hinged with the moving sleeve 3. The hinge point, the midpoint of the circular arc and the center of the circular arc on the polishing tile 7 are collinear.

[0045] Two torsion springs 5 ​​with opposite elastic forces are provided at the hinge of the polishing pad 7 and the moving sleeve 3. The polishing pad 7 and the moving sleeve 3 are hinged through a hinge shaft 6, and the torsion spring 5 is installed on the hinge shaft 6. It is not difficult to see that the torsion spring 5 is symmetrically installed on the hinge shaft 6, so that the polishing pad 7 can be subjected to spring force when swinging, and at the same time, a pressing force is applied to the arc surface through the torsion spring 5 to ensure the polishing quality.

[0046] like Figure 1 , Figure 2 ,like Figure 5 and Figure 6 As shown, a liner 8 is provided between the inner side of the circular arc of the polishing tile 7 and the polishing sandpaper 9, and the liner 8 is mounted on the polishing tile 7 by screws 10. The liner 8 is made of soft material, such as wood, nylon, etc., and plays a buffering and protective role. After the polishing sandpaper 9 is worn, it prevents the polishing tile 7 from directly contacting the crankshaft parts and damaging the surface of the crankshaft parts.

[0047] like Figure 1 and Fig.11 As shown, the polishing sandpaper 9 extends to the outside of the polishing tile 7 and is pressed by setting a flat iron 11 and screws.

[0048] When polishing the crankshaft main journal, the machine tool drives the crankshaft to rotate, so that the polishing sandpaper polishes the main journal; when polishing the crankshaft throw journal, the crankshaft does not move, and the machine tool drives the polishing device to rotate around the throw journal, so that the polishing sandpaper polishes the throw journal.

[0049] Although the present invention has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A journal polishing device, characterized in that: include: Telescopic seat, used to connect with the machine tool turret; A movable sleeve, one end of which is sleeved on the telescopic seat and a spring is provided between the two; The polishing shoe is hinged at the other end of the moving sleeve. The polishing shoe has an arc matched with the polishing journal, and polishing sandpaper is laid on the inner side of the arc.

2. A journal polishing device as claimed in claim 1, characterized in that: The telescopic seat has an axis structure, the movable sleeve has a cylindrical structure, and the movable sleeve is sleeved on the axis structure through the cylindrical structure.

3. A journal polishing device as claimed in claim 2, characterized in that: The shaft structure is provided with a guide shaft, and the cylindrical structure is provided with a guide groove matched with the guide shaft.

4. A journal polishing device as claimed in claim 1, characterized in that: Two torsion springs with opposite elastic forces are arranged at the hinged joint between the polishing shoe and the moving sleeve.

5. A journal polishing device as claimed in claim 4, characterized in that: The polishing shoe is hinged to the movable sleeve via a hinge shaft, and the torsion spring is installed on the hinge shaft.

6. A journal polishing device as claimed in claim 1, characterized in that: The arc outer side of the polishing tile has a triangular structure, and the triangular structure is hinged to the moving sleeve.

7. A journal polishing device as claimed in claim 6, characterized in that: The hinge point, the arc midpoint and the arc center point on the polishing tile are collinear.

8. A journal polishing device as claimed in claim 1, characterized in that: A liner is provided between the inner side of the circular arc of the polishing tile and the polishing sandpaper.

9. A journal polishing device as claimed in claim 8, characterized in that: The gasket is mounted on the polishing tile by screws.

10. A journal polishing device as claimed in claim 1, characterized in that: The polishing sandpaper extends to the outside of the polishing tile and is pressed by setting a flat iron.

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