A cylinder bore lifting tool for machining inclined oil holes of a cylinder block and its usage method

Abstract

The present invention discloses a cylinder hole lifting tool and a using method for machining inclined oil holes of a cylinder block, including a lifting body, a lifting ring, a top plate, and an anti-disengagement pin. The lifting ring and the lifting body are respectively distributed on the upper and lower sides of the top plate. The lower end of the lifting ring is connected to the top plate, and the upper end of the lifting body is connected to the top plate. The top plate is further provided with a through hole penetrating through the upper and lower sides of the top plate, and the anti-disengagement pin is slidably installed in the through hole. The anti-disengagement pin is a stepped column structure with a larger upper part and a smaller lower part, and its lower end is provided with an annular groove in the circumferential direction and a guiding groove in the axial direction. The lower end of the guiding groove communicates with the annular groove. A limiting member is provided on the top plate for restricting the movement of the anti-disengagement pin. The present invention has the advantages of simple structure and high working efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of engine processing, and particularly to a cylinder hole lifting tool for processing inclined oil holes of a cylinder block and a using method thereof. Background Art

[0002] When machining inclined oil holes on the main shaft holes of a cylinder block in a medium-sized engine, it is necessary to stand the part upright in the direction of the main shaft hole and then hoist it to the machining station for machining. The currently used lifting tool is to screw the lifting ring screw into the threaded hole on the end face of the part and then perform hoisting. Removing the lifting ring screw is rather troublesome and not suitable for mass production. The cylinder hole lifting tool is an auxiliary lifting tool for engine cylinder block processing. For example, when machining the cylinder holes of an engine cylinder block on a horizontal machining device, it is necessary to hoist the cylinder block with its side facing up. Most of the currently common lifting tools are designed based on the shape characteristics of the cylinder block and are clamped relying on pits or bosses. Therefore, each type of cylinder block lifting tool is not universal. Moreover, the shape of the cylinder block is cast and processed with large dimensional deviations. Relying on the external structure for hoisting will affect the stability and safety during hoisting. At the same time, during the transfer process after clamping, the cylinder block is also prone to slipping due to the jumping and tilting of the cable, causing serious potential production safety hazards.

[0003] In the lifting tool disclosed in the prior patent technology for precision milling the top surface and precision boring the cylinder holes of an engine cylinder block (CN201485170U), the insertion pin is installed by threaded connection, which affects the working efficiency.

[0004] The disclosure of the above background art content is only used to assist in understanding the concept and technical solution of the present invention, and it does not necessarily belong to the prior art of this patent application. Without clear evidence indicating that the above content was publicly available on the filing date of this patent application, the above background art should not be used to evaluate the novelty and inventiveness of this application. Summary of the Invention

[0005] The object of the present invention is to provide a cylinder hole lifting tool for processing inclined oil holes of a cylinder block and a using method thereof, which have a simple structure, are convenient to operate, and have high working efficiency.

[0006] To this end, the present invention provides a cylinder hole lifting tool for processing inclined oil holes of a cylinder block and a using method thereof.

[0007] Preferably, the present invention may further have the following technical features:

[0008] A cylinder hole lifting tool for machining inclined oil holes of a cylinder block, comprising a lifting body, a lifting ring, a top plate, and an anti - detachment pin. The lifting ring and the lifting body are respectively distributed on the upper and lower sides of the top plate. The lower end of the lifting ring is connected to the top plate, and the upper end of the lifting body is connected to the top plate. The top plate is also provided with a perforation penetrating through the upper and lower sides of the top plate, and the anti - detachment pin is slidably installed in the perforation. The anti - detachment pin is a stepped column structure with a larger upper part and a smaller lower part, and its lower end is provided with an annular groove in the circumferential direction and a guiding groove along the axial direction. The lower end of the guiding groove communicates with the annular groove. A limiting member is provided on the top plate to limit the movement of the anti - detachment pin.

[0009] Further, the limiting member is a limiting pin; the diameter of the front end of the limiting pin is smaller than the height of the annular groove and also smaller than the width of the guiding groove.

[0010] Further, a positioning screw hole is provided on the side surface of the top plate and penetrates through to the perforation, and the limiting pin is provided in the positioning screw hole.

[0011] Further, the lifting body is an L - shaped rod body, which includes a horizontal rod body and a vertical rod body.

[0012] Further, a sheath is provided on the vertical rod body of the lifting body.

[0013] Further, a brass outer layer is provided on the horizontal rod body of the lifting body.

[0014] Further, several cushion blocks are included, and the cushion blocks are assembled on the lower surface of the top plate and protrude a certain height from the lower surface of the top plate.

[0015] Further, there are 3 cushion blocks, which are distributed in a triangular pattern on the top plate.

[0016] Further, the lifting ring and the lifting body are respectively thread - connected to the top plate.

[0017] Further, nuts are welded at the connection positions of the lifting ring, the lifting body and the top plate, and the axial contact length of the lifting ring, the lifting body and the top plate is increased through the nuts.

[0018] A method for using a cylinder hole lifting tool for machining inclined oil holes of a cylinder block, comprising the following steps:

[0019] First, pull the anti - detachment pin upwards and then rotate it by a certain angle, and it will automatically lock; then insert this lifting tool into the cylinder hole of the cylinder block; then lower the anti - detachment pin, and the lower end of the anti - detachment pin is inserted into the hole at the top of the cylinder block to prevent the cylinder block parts from slipping during the lifting process; after the lifting is completed, pull the anti - detachment pin upwards, and the lifting tool can be disengaged from the workpiece.

[0020] The beneficial effects of the present invention compared with the prior art include: By improving the anti - detachment bolt structure, the use of the anti - detachment bolt is made more convenient and fast, improving work efficiency. By adding a sheath, a brass outer layer, and a cushion block to the lifting body, it is possible to avoid abrasion and damage to the surface of the cylinder block by the lifting tool during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a perspective view of the present invention.

[0022] Figure 2 is a schematic diagram of the anti - detachment bolt structure of the present invention.

[0023] Figure 3 is an application schematic diagram of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0024] The present invention will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be emphasized that the following description is merely exemplary and not intended to limit the scope of the present invention and its applications.

[0025] Referring to the following drawings, non - restrictive and non - exclusive embodiments will be described, where like reference numerals represent like components, unless otherwise specifically stated.

[0026] As Figures 1 to 3 shown, a cylinder hole lifting tool for machining the inclined oil hole of a cylinder block includes a lifting body, a lifting ring 7, a top plate 5, and an anti - detachment bolt 9. The lifting ring 7 and the lifting body are respectively distributed on the upper and lower sides of the top plate 5. The lower end of the lifting ring 7 is threadedly connected to the top plate 5, and the upper end of the lifting body is connected to the top plate 5. The top plate 5 is also provided with a through - hole penetrating the upper and lower sides of the top plate 5, and the anti - detachment bolt 9 is slidably installed in the through - hole. During operation, the anti - detachment bolt 9 moves up and down in the through - hole and can approach or move away from the cylinder block 20. Specifically, the lifting body is a bent rod, the upper end of its upper part is provided with a thread and is threadedly connected to the top plate 5, and the lower part forms a certain angle with the upper part, preferably 90°. Preferably, the lifting body is an L - shaped rod, which includes a horizontal rod and a vertical rod. When in use, the lower part of the lifting body extends into the cylinder hole, and the lower part of the lifting body is used to lift the cylinder hole. The horizontal rod of the lifting body can be in parallel contact with the cylinder hole, avoiding scraping the inner wall of the cylinder hole by the lifting body. Further, the material of the lifting body is steel. Preferably, the upper part (vertical rod) of the lifting body is provided with a nylon sheath 2 to avoid damaging the parts when the lifting tool is put into the cylinder hole of the parts, and the outer side of the lower part (horizontal rod) is provided with a brass outer layer 1 to prevent knocking and damaging the cylinder hole of the parts when the lifting tool is put into the cylinder hole.

[0027] More specifically, in combination with Figure 2, the anti - detachment bolt 9 is a stepped column structure with a larger upper part and a smaller lower part, forming a limiting surface at the joint of the upper and lower parts. Its lower end is provided with an annular groove 91 in the circumferential direction and a guiding groove 92 along the axial direction. The lower end of the guiding groove 92 communicates with the annular groove 91, and the upper end extends to the limiting surface of the anti - detachment bolt 9. The side surface of the top plate 5 is provided with a radial positioning screw hole, and the other end of the positioning screw hole communicates with the perforation. The limiting pin 10 is assembled in this positioning screw hole. The diameter of the front end of the limiting pin 10 is smaller than the height of the annular groove 91 and also smaller than the width of the guiding groove 92. In this way, when assembling the anti - detachment bolt 9, first withdraw the limiting pin 10 to prevent the limiting pin 10 from interfering with the assembly of the anti - detachment bolt 9. Then assemble the anti - detachment bolt 9 into the perforation, rotate the anti - detachment bolt 9 to make the positions of the guiding groove 92 and the limiting pin 10 correspond, and then screw in the limiting pin 10 so that the front end of the limiting pin 10 extends into the guiding groove 92, thereby restricting the circumferential rotation of the anti - detachment bolt 9. Before use, pull the anti - detachment bolt 9 upward along the guiding groove 92, and then rotate it by a certain angle so that the front end of the limiting pin 10 enters the annular groove 91, which automatically locks the anti - detachment bolt 9 and restricts the axial movement of the anti - detachment bolt 9. Then insert the parallel rod body of this lifting tool into the second cylinder hole of the cylinder block 20. Then lower the anti - detachment bolt 9 to prevent the cylinder block 20 from slipping during lifting, and then it can be lifted. After the lifting is completed, pull the anti - detachment bolt 9 upward along the guiding groove to disengage the lifting tool from the workpiece. Preferably, the front end of the limiting pin 10 is a stepped column with a smaller diameter.

[0028] In a preferred embodiment, it further includes several cushion blocks. The top plate 5 is provided with mounting holes 12 for connecting the cushion blocks. The upper part of the cushion blocks is assembled in the mounting holes 12 in an interference - fit manner, and the lower part protrudes from the lower surface of the top plate 5. Preferably, there are 3 cushion blocks, which are distributed in a triangular pattern on the top plate 5. Installing copper cushion blocks on the top plate 5 can prevent the end face of the part from being bruised before the lifting tool is lifted.

[0029] Preferably, to increase the overall weight of the lifting tool, it is necessary to reduce the thickness of the top plate 5. However, if the thickness of the top plate 5 is too small, it is easy to cause problems with the connection stability of the lifting ring 7, the lifting tool body, and the top plate 5. Therefore, after reducing the thickness of the top plate 5, nuts 8 are welded at the connection points between the top plate 5 and the lifting ring 7 and the lifting tool body. By means of the nuts 8, the axial contact length between the lifting ring 7, the lifting tool body, and the top plate 5 is increased, thereby improving the stability of the connection of the lifting ring 7 and the lifting tool body to the top plate 5.

[0030] A method for using a cylinder hole lifting tool for machining inclined oil holes of a cylinder block includes the following steps: Before use, pull the anti-drop pin 9 upwards and then rotate it by a certain angle, and it will automatically lock. Then insert the horizontal rod body of this lifting tool into the second cylinder hole of the cylinder block 20. Next, lower the anti-drop pin 9, and the lower end of the anti-drop pin 9 is inserted into the hole at the top of the cylinder block to prevent the cylinder block 20 parts from slipping off during lifting. After the lifting is completed, pull the anti-drop pin 9 upwards, and the lifting tool can be detached from the workpiece.

[0031] Those skilled in the art will recognize that numerous variations to the above description are possible, so the embodiments and the drawings are only used to describe one or more specific embodiments.

[0032] Although the exemplary embodiments considered to be the present invention have been described and recited, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Additionally, many modifications can be made to adapt a particular situation to the teachings of the present invention without departing from the central concept described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but the present invention may also include all embodiments within the scope of the present invention and their equivalents.

Claims

1. A cylinder hole lifting tool for machining inclined oil holes of a cylinder block, comprising a lifting body, a lifting ring, a top plate, and an anti-detachment plug pin. The lifting ring and the lifting body are respectively distributed on the upper and lower sides of the top plate. The lower end of the lifting ring is connected to the top plate, and the upper end of the lifting body is connected to the top plate. The top plate is further provided with a perforation penetrating through the upper and lower sides of the top plate, and the anti-detachment plug pin is slidably installed in the perforation, characterized in that: The anti-disengagement bolt is a stepped column structure with a larger upper part and a smaller lower part, and an annular groove in the circumferential direction and a guiding groove in the axial direction are provided at its lower end; the lower end of the guiding groove communicates with the annular groove; a limiting member is provided on the top plate for restricting the movement of the anti-disengagement bolt.

2. The cylinder hole lifting tool for machining the inclined oil hole of the cylinder block according to claim 1, characterized in that: The limiting member is a limiting pin; the diameter of the front end of the limiting pin is smaller than the height of the annular groove and also smaller than the width of the guiding groove.

3. A cylinder hole lifting tool for machining inclined oil holes of a cylinder block according to claim 2, characterized in that: A positioning screw hole is provided on the side surface of the top plate and penetrates through to the perforation, and the limiting pin is provided in the positioning screw hole.

4. The cylinder hole lifting tool for machining the inclined oil hole of the cylinder block according to claim 1, characterized in that: The lifting body is specifically an L-shaped rod body, which includes a horizontal rod body and a vertical rod body.

5. The cylinder hole lifting tool for machining the inclined oil hole of the cylinder block according to claim 4, wherein: A sheath is provided on the vertical rod body of the lifting body.

6. The cylinder hole lifting tool for machining the inclined oil hole of the cylinder block according to claim 4, characterized in that: A brass outer layer is provided on the horizontal rod body of the lifting body.

7. A cylinder hole lifting tool for machining inclined oil holes of a cylinder block according to claim 1, characterized in that: It further includes a plurality of cushion blocks, and the cushion blocks are assembled on the lower surface of the top plate and protrude a certain height from the lower surface of the top plate.

8. The cylinder hole lifting tool for machining the inclined oil hole of the cylinder block according to claim 7, characterized in that: There are 3 cushion blocks, which are distributed in a triangular pattern on the top plate.

9. A cylinder hole lifting tool for machining inclined oil holes of a cylinder block according to claim 1, characterized in that: The lifting ring and the lifting body are respectively threadedly connected to the top plate; nuts are welded at the connection positions of the lifting ring, the lifting body and the top plate to increase the axial contact length between the lifting ring, the lifting body and the top plate.

10. A method for using a cylinder hole lifting tool for machining inclined oil holes of a cylinder block according to claim 1, comprising the following steps: First, pull the anti-disengagement bolt upwards and then rotate it by a certain angle, and it will automatically lock; then insert this lifting tool into the cylinder hole of the cylinder block; then lower the anti-disengagement bolt, and the lower end of the anti-disengagement bolt is inserted into the hole at the top of the cylinder block to prevent the cylinder block parts from slipping during lifting; after the lifting is completed, pull the anti-disengagement bolt upwards, and the lifting tool can be disengaged from the workpiece.

Images