CN110732901A - Positioning mechanism for rough machining of engine block - Google Patents

Abstract

The invention relates to a positioning mechanism for rough machining of an engine cylinder block, which comprises a cylinder seat, a lower oil cylinder is arranged in the cylinder seat, and the piston rod of the lower oil cylinder faces downward. There are rod sleeves on the cylinder bases on both sides of the lower oil cylinder. A vertical push rod is arranged in the rod sleeve, a connecting plate is arranged between the lower ends of the vertical push rod, and the middle of the connecting plate is connected with the outer end of the piston rod of the lower oil cylinder. The upper part of the adjacent side sleeve wall of the rod sleeve is provided with a first transverse hole, and a first transverse push rod is arranged in the first transverse hole. The inner end of the first horizontal push rod and the upper end of the vertical push rod both have 45-degree inclined surfaces, and the two are in sliding fit. There is an upper cylinder on the lower cylinder, and the piston rod of the upper cylinder faces upwards. The upper cylinder body is provided with an annular protrusion, the opposite side walls of the annular protrusion are provided with second transverse holes, and the second transverse holes are perpendicular to the first transverse holes. There are second transverse push rods in the second transverse holes, and both sides of the inner end of the second transverse push rod and the outer end of the piston rod of the upper oil cylinder are provided with 45-degree inclined surfaces, and the two are in sliding fit. The invention is easy to operate, has high positioning accuracy and high working efficiency. Suitable for positioning during rough machining of engine blocks.

Description

Positioning mechanism for rough machining of engine block

technical field

The present invention relates to a positioning mechanism. Specifically, it is a positioning mechanism used to position the engine block when rough machining it.

Background technique

It is known in the automobile engine block production industry that in the rough machining process of the engine block, the engine block needs to be positioned in order to ensure the machining quality. The traditional positioning method is to use multiple oil cylinders to clamp the dead center of the engine block, that is, the non-processing point, to realize the clamping and positioning of the engine block. Although this method can be used to achieve the positioning of the engine block, because this positioning method uses multiple oil cylinders to clamp the dead center of the engine block to achieve clamping and positioning, many oil cylinders are required, not only many operation steps, It is troublesome to operate, the positioning accuracy is not high, and the work efficiency is low.

SUMMARY OF THE INVENTION

The problem to be solved by the present invention is to provide a positioning mechanism for rough machining of an engine block. By adopting the positioning mechanism, not only the operation steps are few, the operation is easy, and the positioning accuracy is high, but also the production efficiency can be improved.

The above-mentioned problems to be solved by the present invention are realized by the following technical solutions:

The positioning mechanism for rough machining of an engine cylinder block of the present invention comprises a cylinder seat, a lower oil cylinder is arranged in the cylinder seat, and the piston rod of the lower oil cylinder faces downward. The cylinder seats on both sides of the lower oil cylinder are provided with rod sleeves, and the rod sleeves are arranged vertically and are parallel to the piston rod of the lower oil cylinder. There are vertical push rods in the rod sleeve, and the two are in sliding fit. There are connecting plates between the lower ends of the vertical push rods, two ends of the connecting plates are respectively connected with the lower ends of the corresponding vertical push rods, and the middle of the connecting plates is connected with the outer end of the piston rod of the lower oil cylinder. The upper part of the adjacent side sleeve wall of the rod sleeve is provided with first transverse holes, the first transverse holes are arranged coaxially, and there are first transverse push rods in them. The inner end of the first horizontal push rod and the upper end of the vertical push rod both have 45-degree inclined surfaces, and the two are in sliding fit. There is an upper oil cylinder on the lower oil cylinder, the piston rod 6 of the upper oil cylinder faces upwards, and one end of the cylinder body of the upper and lower oil cylinders is connected as a whole. The upper cylinder body around the piston rod is provided with an annular protrusion for forming a short tube, the opposite side walls of the annular protrusion are provided with second transverse holes, and the second transverse holes are coaxially arranged and connected with the first transverse holes. vertical. There are second transverse push rods in the second transverse holes, and the inner ends of the second transverse push rods have a 45-degree slope. Both sides of the outer end of the piston rod of the upper oil cylinder are provided with 45-degree inclined planes, and the two 45-degree inclined planes are respectively matched with the 45-degree inclined planes at the inner end of the corresponding second cross rod.

A further improvement scheme of the present invention is that the upper end of the vertical push rod has a first plug, and the 45-degree slope of the upper end of the vertical push rod is located on the upper end of the first plug.

A further improvement scheme of the present invention is that the upper end of the piston rod of the upper oil cylinder is provided with a top sleeve. The upper end of the top sleeve is closed, and the 45-degree inclined surfaces on both sides of the outer end of the piston rod are located at the upper end of the top sleeve.

It can be seen from the above scheme that when working, the piston rod of the upper oil cylinder is extended first, and the two coaxially arranged second transverse push rods can be driven to extend simultaneously until the engine cylinder block is supported, thereby realizing the protection of the engine. Clamping and positioning of the cylinder in a horizontal direction. Then, the piston rod of the lower oil cylinder extends out and the connecting rod drives the two vertical push rods to move up along the rod sleeve respectively, and then drives the two coaxially arranged first horizontal push rods to extend inward at the same time. Clamping and positioning of the engine block in another horizontal direction. Compared with the prior art that requires multiple oil cylinders to clamp the engine block, many oil cylinders are required, which not only reduces the operation steps, is easy to operate, improves the positioning accuracy, but also greatly improves the production efficiency.

Description of drawings

1 is a schematic diagram of a positioning mechanism for rough machining of an engine block of the present invention;

Fig. 2 is the A-A sectional view of Fig. 1;

Detailed ways

As shown in FIGS. 1 and 2 , the positioning mechanism for rough machining of an engine block of the present invention includes a cylinder block 7 . There is a bottom plate 10 under the cylinder base 7, and a lower oil cylinder is arranged therein, and the piston rod 8 of the lower oil cylinder faces downward. Rod sleeves 1 are provided on the cylinder bases 7 on both sides of the lower oil cylinder, and the rod sleeves 1 are arranged vertically and are parallel to the piston rod 8 of the lower oil cylinder. A vertical push rod 5 is arranged in the rod cover 1 , and the vertical push rod 5 and the rod cover 1 are in sliding fit. A connecting plate 9 is arranged between the lower ends of the two vertical push rods 5, and the two ends of the connecting plate 9 are respectively connected with the lower end of the corresponding vertical push rod 5 by means of nuts. The outer end is protruded under the connecting plate 9 through the shaft hole and locked with a nut. The positions of the upper part of the adjacent side sleeve wall of the rod sleeve 1 are all machined with first transverse holes, the first transverse holes are arranged coaxially, and the first transverse push rods 4 are installed therein. The inner end of the first horizontal push rod 4 and the upper end of the vertical push rod 5 are both machined with a 45-degree inclined plane, and the two are in sliding fit.

An upper oil cylinder is arranged on the lower oil cylinder, the piston rod 6 of the upper oil cylinder faces upwards, and one end of the cylinder body of the upper and lower oil cylinders is connected as a whole. The upper cylinder body around the piston rod 6 is machined with an annular protrusion for forming a short tube, and second transverse holes are machined on the opposite side walls of the annular protrusion, and the two second transverse holes are arranged coaxially and perpendicular to the first horizontal hole. A second transverse push rod 12 is installed in the second transverse hole, and the inner end of the second transverse push rod 12 is processed with a 45-degree inclined plane. Both sides of the outer end of the piston rod 6 of the upper cylinder are machined with 45-degree inclined planes, and the two 45-degree inclined planes are respectively matched with the 45-degree inclined planes at the inner end of the corresponding second transverse rod 12 .

Wherein, the upper end of the vertical push rod 5 has a first plug 3 , and the 45-degree slope of the upper end of the vertical push rod 5 is located on the upper end of the first plug 3 .

A top sleeve 2 is provided on the upper end of the piston rod 6 of the upper oil cylinder. The upper end of the top sleeve 2 is closed, and the 45-degree inclined surfaces on both sides of the outer end of the piston rod 6 are located at the upper end of the top sleeve 2 .

When working, the piston rod 6 of the upper oil cylinder is extended first, which can drive the two coaxially arranged second transverse push rods 12 to extend at the same time until it withstands the engine cylinder, thereby realizing a horizontal direction to the engine cylinder. clamping and positioning. Then, the piston rod 8 of the lower oil cylinder extends out and drives the two vertical push rods 5 to move up along the rod sleeve 1 respectively through the connecting rod 9, and then drives the two coaxially arranged first horizontal push rods 4 to move inside at the same time. extension, to achieve clamping and positioning of the engine block in another horizontal direction.

Claims (4)

1. The positioning mechanism for rough machining of the engine cylinder block is characterized in that: it comprises a cylinder seat, a lower oil cylinder is arranged in the cylinder seat, and the piston rod of the lower oil cylinder faces downward; The sleeves are arranged vertically and are parallel to the piston rod of the lower oil cylinder; there are vertical push rods in the rod sleeve and there is a sliding fit between the two; there are connecting plates between the lower ends of the vertical push rods, and the two ends of the connecting plates are respectively connected with the corresponding vertical push rods. The lower end of the rod is connected, and the middle of the connecting plate is connected with the outer end of the piston rod of the lower oil cylinder; the upper part of the adjacent side sleeve wall of the rod sleeve is provided with first transverse holes, the first transverse holes are arranged coaxially, and there are first transverse holes in them. Push rod; the inner end of the first horizontal push rod and the vertical push rod have a 45-degree slope, and there is a sliding fit between the two; there is an upper oil cylinder on the lower oil cylinder, the piston rod of the upper oil cylinder is upward, and one end of the cylinder body of the upper and lower oil cylinders is connected as One body; the upper cylinder around the piston rod is provided with an annular protrusion for forming a short tube, and the opposite side walls of the annular protrusion are provided with second transverse holes, and the second transverse holes are arranged coaxially and are connected with the first transverse holes. The horizontal hole is vertical; there are second horizontal push rods in the second horizontal hole, and the inner end of the second horizontal push rod has a 45-degree slope; both sides of the outer end of the piston rod of the upper cylinder have a 45-degree slope. The inclined planes are respectively matched with the inclined planes of 45 degrees at the inner end of the corresponding second cross bar. 2 . The positioning mechanism for rough machining of an engine block according to claim 1 , wherein the upper end of the vertical push rod has a first plug, and the 45-degree slope of the upper end of the vertical push rod is located on the upper end of the first plug. 3 . 3. The positioning mechanism for rough machining of an engine block according to claim 1 is characterized in that: the upper end of the piston rod of the upper oil cylinder is provided with a top sleeve; The upper end of the top cover. 4. The positioning mechanism for rough machining of an engine block according to any one of claims 1 to 3, wherein a bottom plate is provided under the cylinder.