CN206122739U - Engine cylinder lid bores oblique for oil hole machining clamping device - Google Patents

Abstract

The utility model discloses a clamping device for drilling inclined oil holes in an engine cylinder cover, which comprises a bottom plate, a positioning mechanism arranged on the bottom plate and used for positioning the engine cylinder cover, and a pressing mechanism for pressing the engine cylinder cover And a drill guide mechanism for guiding a drill on a horizontal machine tool. The clamping device for drilling oblique oil holes in the engine cylinder head of the utility model realizes precise clamping and positioning of the engine cylinder head by setting a positioning mechanism, a pressing mechanism and a drilling guide mechanism, and improves the engine cylinder head. The processing accuracy of the inclined oil hole also improves the clamping efficiency and the reliability of pressing, and improves the processing efficiency of the inclined oil hole.

Description

Clamping device for drilling oblique oil hole in engine cylinder head

technical field

The utility model belongs to the technical field of clamping devices. Specifically, the utility model relates to a clamping device for drilling inclined oil holes in the cylinder head of an automobile engine.

Background technique

When the automobile engine is working, the lubricating oil in the oil channel of the cylinder head flows into the low-pressure oil chamber in the tappet body through the oil gauge hole, the inclined oil hole and the annular oil groove, so as to ensure the normal operation of the tappet. Here, the oblique oil hole is a slanted and slender hole, which makes it difficult to machine the engine cylinder head in the machining process of the oblique oil hole. The general processing method is to place the cylinder head on a radial drilling machine for adjustment by skilled workers. Position to process, because the position is difficult to find, the process error is relatively large, and the processing efficiency is low. At the same time, many engine cylinder head manufacturers currently use low-cost vertical machine tools to process the oblique oil holes of the cylinder head. The processing technology is complicated, the tooling and fixture are heavy, and the precision is low, so that the processing quality is not high. Therefore, it is particularly important to select a special-purpose engine cylinder head drilling oblique oil hole clamping device that can be accurately clamped and processed quickly on a horizontal machine tool.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. For this reason, the utility model provides a clamping device for drilling inclined oil holes in the cylinder head of an automobile engine, with the purpose of improving the processing efficiency of drilling the inclined oil holes in the cylinder head of the engine on a horizontal machine tool.

In order to achieve the above object, the technical solution adopted by the utility model is: the clamping device for drilling the inclined oil hole of the engine cylinder head, including the base plate and the positioning mechanism arranged on the base plate and used for positioning the engine cylinder head, for pressing Clamping mechanism for engine cylinder head and drilling guide for drilling on horizontal machine tools.

The positioning mechanism includes several supporting nails arranged on the bottom plate, and the top surface of the supporting nails is a plane for contacting the engine cylinder head.

The supporting nails are arranged in multiple rows on the base plate.

The positioning mechanism also includes two positioning pins arranged on the bottom plate, one of which is a circular positioning pin and the other is a diamond-shaped positioning pin.

The pressing mechanism includes a hydraulic cylinder, a pressure rod that is rotatably connected to the piston rod of the hydraulic cylinder, and a connecting rod that is rotatably connected to the cylinder body of the hydraulic cylinder. The axis is perpendicular to and parallel to the bottom plate.

There are two pressing mechanisms in total, and the two pressing mechanisms are arranged oppositely, and are respectively used for applying a pressing force to the engine cylinder head at one end of the engine cylinder head.

The pressing end of the pressing bar is provided with a pressing pad made of nylon material.

The pressing mechanism also includes a backing plate arranged on the bottom plate, and the hydraulic cylinder is installed on the backing plate.

The drilling guide mechanism includes a drilling template arranged on the base plate and a drill bushing arranged on the drilling template, and the drill bushing has a guide hole for the drill bit to pass through.

The drilling template is vertically arranged on the top surface of the bottom plate, and the axis of the guide hole is parallel to the top surface of the bottom plate.

A plurality of drill sleeves are arranged on the drill template.

A bushing is provided between the drill sleeve and the drill template.

The clamping device of the utility model for drilling inclined oil holes in the engine cylinder head realizes precise clamping and positioning of the engine cylinder head by setting a positioning mechanism, a pressing mechanism and a drilling guide mechanism, and improves the engine cylinder head. The machining accuracy of the inclined oil hole also improves the clamping efficiency and the reliability of pressing, and the processing efficiency is relatively high; moreover, the inclined oil hole at the installation position of the engine cylinder head is consistent with the direction of the drill bit of the horizontal machine tool, so that the engine cylinder head After clamping, the machine tool can be started to directly process the inclined oil hole, which greatly facilitates the operation of the workers and improves the processing efficiency of the inclined oil hole. The employees who process this product can go to work without training.

Description of drawings

This manual includes the following drawings, the contents shown are:

Fig. 1 is the front view of the utility model clamping device;

Fig. 2 is a top view of the utility model clamping device;

Fig. 3 is a side view of the utility model clamping device;

The marks in the figure are: 1. Bottom plate; 2. Backing plate; 3. Drilling template; 4. Hydraulic cylinder; 5. Pressure rod; 6. Circular positioning pin; 7. Connecting rod; Nail; 10. Pressure pad; 11. Processing surface of inclined oil hole; 12. Engine cylinder head; 121. Position of inclined oil hole; 13. Drill bushing; 14. Bushing.

detailed description

Next, with reference to the accompanying drawings, through the description of the embodiments, the specific implementation of the present utility model will be further described in detail, the purpose is to help those skilled in the art to have a more complete, accurate and in-depth understanding of the concept and technical solutions of the present utility model , and contribute to its implementation.

As shown in Figures 1 to 3, the utility model provides a clamping device for drilling inclined oil holes in the engine cylinder head, which is suitable for horizontal machine tools and is used for tightening the engine cylinder head when drilling inclined oil holes. The cylinder head is clamped and fixed, and the oblique oil hole is an oblique and elongated hole in the engine cylinder head, and the axis of the oblique oil hole and the length direction of the engine cylinder head have an angle less than 90 degrees. When the automobile engine is working, the lubricating oil in the oil channel of the cylinder head flows into the low-pressure oil chamber in the tappet body through the oil gauge hole, the inclined oil hole and the annular oil groove, so as to ensure the normal operation of the tappet. The clamping device of the present utility model includes a base plate 1 and a positioning mechanism arranged on the base plate 1 and used for positioning the engine cylinder head, a pressing mechanism for pressing the engine cylinder head and a drill guide for the horizontal machine tool. drill guide mechanism.

Specifically, as shown in FIGS. 1 to 3 , the bottom plate 1 is a horizontally placed rectangular flat plate, the top surface of the bottom plate 1 is a horizontal plane, and the top surface of the bottom plate 1 is also a positioning surface for contacting the bearing cover. The positioning mechanism includes several supporting nails 9 vertically arranged on the base plate 1, and the top surface of the supporting nails 9 is a plane for contacting the engine cylinder head. A plurality of support nails 9 are arranged in multiple rows on the top surface of the base plate 1, each row of support nails 9 is on the same straight line parallel to the length direction of the engine cylinder head, the axis of the support nails 9 is perpendicular to the top surface of the base plate 1, The top surface of support nail 9 is a plane, and the top surfaces of all support nails 9 are ground together to form the support plane in the clamping process of the engine cylinder head, and the engine cylinder cover is placed on the support plane formed by support nail 9 with its bottom surface or top surface ( The bottom surface of the engine cylinder head refers to the joint surface of the engine cylinder head and the engine block, and the top surface of the engine cylinder head refers to the joint surface parallel to the bottom surface and combined with the engine cover). The oblique oil hole processing surface 11 of hole processing is a side surface on the width direction of the engine cylinder head, and the oblique oil hole processing surface 11 is a plane perpendicular to the top surface and the bottom surface of the engine cylinder head. The angle between the axis of the inclined oil hole drilled on the surface 11 and the processed surface 11 of the inclined oil hole is less than 90 degrees.

Preferably, the support nail 9 is threadedly connected to the bottom plate 1, the insertion portion of the support nail 9 has an external thread, and the bottom plate 1 is provided with a threaded hole for the insertion portion of the support nail 9 to be inserted. The support nails 9 are threadedly connected to the bottom plate 1, which is convenient for adjusting the top surface of the support nails 9 to be flush, easy to replace, and fixed firmly.

As shown in Figures 1 to 3, the positioning mechanism also includes two positioning pins vertically arranged on the base plate 1 and supporting nails 9, one of which is a circular positioning pin 6, and the other is a diamond-shaped positioning pin 8, and the two The two positioning pins are on the same straight line parallel to the straight line where the supporting nails 9 of each row are located, and the top or bottom surface of the engine cylinder head is selected with positioning holes that are compatible with the two positioning pins. The matching positioning hole is on the same straight line parallel to the inclined oil hole processing surface 11, and positioning pins are provided to ensure that the positioning is more accurate and reliable when the engine cylinder head is processed.

As shown in Figures 1 to 3, the pressing mechanism includes a hydraulic cylinder 4 arranged on the bottom plate 1, a pressure rod 5 connected to the piston rod of the hydraulic cylinder 4 in rotation, and a connecting rod 7 connected in rotation to the cylinder body of the hydraulic cylinder 4 , the connecting rod 7 is rotatably connected with the pressure rod 5, the rotation center line of the pressure rod 5 is perpendicular to the axis of the hydraulic cylinder 4, and there are at least two pressing mechanisms. The lever-type pressing mechanism that hydraulic cylinder 4, depression bar 5 and connecting rod 7 constitutes cooperates with positioning mechanism, and engine cylinder head is pressed on the positioning mechanism at the two ends of engine cylinder head top surface. The hydraulic cylinder 4 is vertically arranged, and the pressing mechanism also includes a backing plate 2 arranged on the top surface of the base plate 1 , and the hydraulic cylinder 4 is installed on the backing plate 2 . One end of the compression rod 5 is rotationally connected with the head of the piston rod of the hydraulic cylinder 4, and the other end is the compression end for pressing the engine cylinder head. The upper end of the connecting rod 7 is rotationally connected with the compression rod 5, and the connection point is close to the The head and the lower end of the connecting rod 7 are rotatably connected with the cylinder body of the hydraulic cylinder 4 to form a support for the pressure rod 5, so that the pressure rod 5 can swing up and down under the drive of the hydraulic cylinder 4 to realize the clamping and locking of the engine cylinder head. freed.

As preferably, the compression end of pressure bar 5 is provided with the pressure pad 10 that is used to contact with engine cylinder head, and pressure pad 10 adopts nylon material to make, in order to prevent excessive permanent pressure deformation to engine cylinder head when clamping, Moreover, it can be replaced in time when the pressure pad 10 undergoes excessive deformation during multiple clamping.

As shown in Figures 1 to 3, the drilling guide mechanism includes a drill template 3 vertically arranged on the top surface of the base plate 1 and a drill sleeve 13 arranged on the drill template 3, and the drill sleeve 13 has a A circular pilot hole through which the drill bit passes. Drilling formwork 3 is a rectangular flat plate, and drilling formwork 3 is arranged on the base plate 1 with respect to the length direction of base plate 1. There is an included angle less than 90 degrees between the length direction of drilling formwork 3 and the length direction of base plate 1, and the drilling formwork The length direction of 3 is parallel to the same straight line where the two positioning pins of the positioning mechanism are located and the straight line where each row of support nails 9 is located, the axis of the guide hole on the drill sleeve 13 is parallel to the top surface of the bottom plate 1, and the axis of the guide hole is parallel to the drill The size of the included angle between the length direction of the template 3 is equal to the angle between the inclined oil hole on the engine cylinder head and the processed surface 11 of the inclined oil hole after processing, and the position of the guide hole is the same as the processed surface 11 of the inclined oil hole. Align the position of the oblique oil hole to be drilled on the top to ensure the accurate position of the oblique oil hole after processing. When drilling, the drill bit on the horizontal machine tool passes through the pilot hole on the drill sleeve 13 in the horizontal direction, and then continues to move towards the inclined oil hole processing surface 11 until the oblique oil hole meeting the requirements is drilled on the engine cylinder head.

As shown in Figures 1 to 3, the drill template 3 is located on the same side of the positioning mechanism and the pressing mechanism, and the drill sleeve 13 is provided with a plurality of drill sleeves 13 along the length direction on the drill template 3, and the positions of each drill sleeve 13 are respectively corresponding to the slope. A drilling position on the oil hole processing surface 11. As preferably, a bushing 14 can also be set between the drill bushing 13 and the drilling template 3, and the mounting hole for the bushing 14 to embed is provided on the drilling template 3, and the center of the bushing 14 has a central hole for the drilling template 3 to embed .

In this embodiment, as shown in Figures 1 to 3, eight supporting nails 9 are arranged on the bottom plate 1, and the eight supporting nails 9 are arranged in three rows, and each row is arranged in sequence four, two and two The supporting nails 9 can form stable support and positioning for the engine cylinder head. There are two compression mechanisms, the two compression mechanisms are oppositely arranged and located on the same straight line parallel to the length direction of the drill template 3, and the two compression mechanisms are respectively used to align the engine cylinder at one end of the engine cylinder head. The cover exerts a compressive force.

The utility model has been exemplarily described above in conjunction with the accompanying drawings. Apparently, the specific implementation of the present invention is not limited by the above methods. As long as the various insubstantial improvements made by adopting the method concept and technical solution of the present utility model; within the scope of protection.

Claims (10)

1. The clamping device for drilling inclined oil holes in the engine cylinder head is characterized in that it includes a base plate and a positioning mechanism arranged on the base plate and used for positioning the engine cylinder head, a pressing mechanism for pressing the engine cylinder head and Drill guide mechanism used to guide the drill on the horizontal machine tool; The positioning mechanism includes several supporting nails arranged on the base plate, the top surface of the supporting nails is a plane for contacting the engine cylinder head; the pressing mechanism includes a hydraulic cylinder, which is rotationally connected with the piston rod of the hydraulic cylinder The compression rod and the connecting rod rotatably connected with the cylinder body of the hydraulic cylinder, the connecting rod and the compression rod are rotatably connected, and the rotation center line of the compression rod is perpendicular to the axis of the hydraulic cylinder and parallel to the base plate. 2 . The clamping device for drilling inclined oil holes in the engine cylinder head according to claim 1 , wherein the supporting nails are arranged in multiple rows on the bottom plate. 3 . 3. The clamping device according to claim 1, wherein the positioning mechanism further comprises two positioning pins arranged on the base plate, one of which is a circular positioning pin. pin, and the other is a diamond-shaped positioning pin. 4. The clamping device for drilling inclined oil holes in the engine cylinder head according to claim 1, wherein there are two clamping mechanisms, and the two clamping mechanisms are arranged oppositely, and are respectively used for Apply compression to the engine head at one end of the engine head. 5 . The clamping device for machining the inclined oil hole of the engine cylinder head according to claim 4 , wherein the pressing end of the pressing rod is provided with a pressing pad made of nylon material. 6 . 6. The clamping device for drilling inclined oil holes in the engine cylinder head according to claim 5, wherein the pressing mechanism further comprises a backing plate arranged on the bottom plate, and the hydraulic cylinder is installed on the backing plate. board. 7. The clamping device according to any one of claims 1 to 6, wherein the drilling guide mechanism includes a drilling template arranged on the bottom plate and a drilling template arranged on the drill. Drill bushing on formwork with pilot holes for drill bits to pass through. 8. The clamping device according to claim 7, characterized in that, the drilling template is vertically arranged on the top surface of the base plate, and the axis of the guide hole is aligned with the base plate. parallel to the top surface. 9 . The clamping device for drilling inclined oil holes in the engine cylinder head according to claim 7 , wherein a plurality of the drill sleeves are arranged on the drill template. 10 . 10 . The clamping device for drilling inclined oil holes in the engine cylinder head according to claim 7 , wherein a bushing is provided between the drill sleeve and the drill template. 11 .