CN221312615U - Drilling device for tappet of diesel engine - Google Patents

Abstract

The utility model discloses a diesel engine tappet drilling device, and belongs to the field of auxiliary tool equipment for diesel engine production. The fixture comprises a fixture body, wherein a placing groove is concavely formed in the top surface of the fixture body, and a stop block and a positioning block are respectively arranged at the front end and the rear end of the fixture body. The upper part of the clamp body is provided with a drill jig, the drill jig is erected above the placing groove, and the drill jig is fixedly connected with the clamp body through screws and is provided with a drill bushing in an inserted manner. The utility model can accurately process straight holes and inclined holes of the tappet by one-time clamping. The device has reasonable structure, convenient operation and reliable positioning, and is suitable for operators with different technical levels.

Description

Drilling device for tappet of diesel engine

Technical Field

The utility model belongs to the field of auxiliary tooling equipment for diesel engine production, and particularly relates to a diesel engine tappet drilling device.

Background

The tappet is one of important parts of the engine, and has close relation to the reliability and service life of the engine. The periphery of the tappet is provided with a pin hole and an oil hole, and the traditional processing method generally comprises the steps of firstly scribing, determining the general position of each hole, and then drilling after aligning according to the scribed hole line. The machining position of each hole is determined by scribing, and geometric accuracy is difficult to ensure.

The tappet pin hole belongs to a middle slotted hole, and the requirements on symmetry, verticality and position degree are strict. The consequence that relies on the marking off drilling at present is, owing to receive cutting force and notch elastic deformation's influence, the pinhole on notch both sides is yielding after the processing, and the straightness accuracy is difficult to guarantee, and form and position tolerance is out of tolerance, and work piece qualification rate is low. In addition, the inclined oil hole is inaccurate in position when being aligned and drilled, easy to move, difficult to process and unstable in workpiece quality. And the clamping alignment is carried out for many times, the device is not suitable for batch production, and the working efficiency is low.

Disclosure of utility model

The utility model aims to solve the technical problems that: the utility model provides a diesel engine tappet drilling device which overcomes the defects of the prior art and can accurately process straight holes and inclined holes of a tappet by one-time clamping. The device has reasonable structure, convenient operation and reliable positioning, and is suitable for operators with different technical levels.

The utility model solves the problems that the technical proposal adopted is as follows:

a diesel engine tappet drilling device comprises a clamp body, wherein a placing groove is concavely formed in the top surface of the clamp body, and a stop block and a positioning block are respectively arranged at the front end and the rear end of the clamp body.

The upper part of the clamp body is provided with a drill jig, the drill jig is erected above the placing groove, and the drill jig is fixedly connected with the clamp body through screws and is provided with a drill bushing in an inserted manner.

Preferably, the stop block and the positioning block are detachably connected with the clamp body.

Preferably, the positioning block is fixedly connected with the clamp body through a movable joint bolt.

Preferably, the placement groove on the top surface of the clamp body is a V-shaped groove.

Preferably, the drill bushing on the drill jig can be replaced.

Preferably, the end face of the drill jig facing one side of the stop block is an inclined plane, and guide holes which are obliquely arranged are formed in the inclined plane and are through holes.

Preferably, the top surface of the clamp body and the drill jig are provided with pin holes matched with each other, and positioning pins are arranged in the pin holes in a penetrating mode.

Preferably, the bottom of the end face of the clamp body, which is positioned at one side of the positioning block, is an inclined plane.

Preferably, the drill jig is connected with a pressing screw in a threaded manner, and the lower end of the pressing screw is arranged in the placing groove.

Preferably, the movable joint bolt is fixedly connected with the clamp body through a pin.

Compared with the prior art, the utility model has the beneficial effects that: the tappet drilling device replaces the traditional machining mode, the workpiece is reliably positioned, machining of the pin hole and the inclined oil hole can be completed through one-time clamping, the working efficiency is high, the machining quality is stable, the turnover time of the workpiece is shortened, and the machining period is shortened. Through the cooperation use of V-arrangement groove and jig on the special anchor clamps body, reliably fixed the correct position of work piece, avoided the work piece aversion because of external force causes, effectively stabilized processingquality.

Drawings

The utility model will be further described with reference to the drawings and examples.

Figure 1 is a top view of a diesel engine tappet drilling device of the present utility model,

Figure 2 is a side view of a diesel tappet drilling device of the present utility model,

Fig. 3 is a cross-sectional view of a diesel engine tappet drilling device of the present utility model.

In the figure, the device comprises a 1-clamp body, a 2-stop block, a 3-drill jig, a 301-guide hole, a 4-compression screw, a 5-drill bushing, a 6-positioning block, a 7-movable joint bolt, an 8-pin, a 9-screw, a 10-positioning pin and an 11-tappet.

Detailed Description

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art is able to solve the technical problem within a certain error range, substantially achieving the technical effect.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "horizontal", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The drawings are the best modes for carrying out the present utility model, and the present utility model will be described in further detail with reference to the accompanying drawings.

The diesel engine tappet drilling device comprises a clamp body 1, wherein a placing groove is concavely formed in the top surface of the clamp body 1, and a stop block 2 and a positioning block 6 are respectively arranged at the front end and the rear end of the clamp body 1.

The tappet 11 is placed inside the placement groove, and for the convenience of placement, the position indicated by the position A is the placement groove position shown in the attached figure 2, and the placement groove is a V-shaped groove because the tappet 11 is a cylinder.

The stop block 2 axially limits the tappet 11, and the positioning block 6 supports and positions the notch of the tappet 11, namely the front end of the positioning block 6 needs to be inserted into the tappet 11.

For convenient installation, the stop block 2 and the positioning block 6 are detachably connected with the clamp body 1. The stop block 2 is fixedly connected with the clamp body 1 through bolts, and the positioning block 6 is fixedly connected with the clamp body 1 through movable joint bolts 7.

The big end of the movable joint bolt 7 is inserted into the clamp body 1, the pin 8 passes through the circular ring of the movable joint bolt 7, and the movable joint bolt 7 is fixedly connected with the clamp body 1 through the pin 8. The positioning block 6 is provided with a vertical through hole, the movable joint bolt 7 passes through the through hole, and then the positioning block 6 is fixed by a nut and a gasket.

The top of the clamp body 1 is provided with a drill jig 3, the drill jig 3 is erected above the placing groove, and the drill jig 3 is fixedly connected with the clamp body 1 through a screw 9. Meanwhile, the top surface of the clamp body 1 and the drill jig 3 are provided with pin holes which are matched with each other, positioning pins 10 are arranged in the pin holes in a penetrating mode, and the drill jig 3 is positioned through the positioning pins 10.

The drill jig 3 is inserted with the drill bushing 5, the drill bushing 5 on the drill jig 3 can be replaced, and the drill bushings 5 with different inner diameters are replaced and used for matching drill bits with different specifications.

The drill jig 3 is connected with a pressing screw 4 which is vertically arranged in a threaded manner, the lower end of the pressing screw 4 is arranged in the placing groove, and the pressing screw 4 can radially prop against the top column 11.

The end face of the drill jig 3, which faces one side of the stop block 2, is an inclined plane, and guide holes 301 which are obliquely arranged are formed in the inclined plane, and the guide holes 301 are through holes.

As shown in fig. 3, the bottom of the end surface of the clamp body 1, which is positioned on one side of the positioning block 6, is an inclined surface, namely a B surface.

The working process is as follows: the outer cylindrical surface of the tappet 11 is used for positioning, the stop block 2 is used for axial limiting, and the positioning block 6 is used for supporting and positioning a notch. The fixture body is designed with a V-shaped notch at the A part and an inclined plane at the B part, wherein the V-shaped notch is used for positioning the outer cylinder of the jacking column 11, and the inclined plane is used for alignment and positioning when drilling an inclined oil hole.

During processing, the jack post 11 is installed, the V-shaped surface in the fixture body 1 is used for positioning, the stop block 2 and the positioning block 6 are used for axial and radial limiting, the pressing screw 4 is used for pressing, and the movable joint bolt 7 passes through a notch of the positioning block 6 to press the positioning block. The drill sleeve 5 in the drill jig 3 is used for guiding the drill bit and the reamer, so that the processing of holes on two sides of the notch of the top column 11 can be completed. Then, the jig is clamped on the jaw, positioned on the inclined plane B of the jig body 1, and the drill is guided to process the inclined oil hole by the guide hole 301 on the drill jig 3. After all holes are machined, the nuts on the compression screw 4 and the movable joint bolt 7 are loosened, the movable joint bolt is turned, the stop block 2 is taken down, the positioning block 6 is pulled out, and a machining process can be completed by pulling out the workpiece.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (10)

1. The utility model provides a diesel engine tappet drilling device which characterized in that:

comprises a clamp body (1), a placing groove is concavely arranged on the top surface of the clamp body (1), a stop block (2) and a positioning block (6) are respectively arranged at the front end and the rear end of the clamp body (1),

A drill jig (3) is arranged above the clamp body (1), the drill jig (3) is erected above the placing groove, the drill jig (3) is fixedly connected with the clamp body (1) through a screw (9),

A drill bushing (5) is inserted on the drill jig (3).

2. The diesel tappet drilling device of claim 1, wherein:

the stop block (2) and the positioning block (6) are detachably connected with the clamp body (1).

3. The diesel tappet drilling device of claim 2, wherein:

The positioning block (6) is fixedly connected with the clamp body (1) through a movable joint bolt (7).

4. A diesel tappet drilling device as set forth in claim 1 or 2 or 3, characterized in that:

the placing groove on the top surface of the clamp body (1) is a V-shaped groove.

5. The diesel tappet drilling device of claim 4, wherein:

the drill bushing (5) on the drill jig (3) can be replaced.

6. The diesel tappet drilling device of claim 4, wherein:

the end face of the drill jig (3) facing one side of the stop block (2) is an inclined plane, a guide hole (301) which is obliquely arranged is formed in the inclined plane, and the guide hole (301) is a through hole.

7. A diesel tappet drilling device as set forth in claim 5 or 6, characterized in that:

The top surface of the clamp body (1) and the drill jig (3) are provided with pin holes which are matched with each other, and positioning pins (10) are arranged in the pin holes in a penetrating mode.

8. The diesel tappet drilling device of claim 7, wherein:

The bottom of the end face of the clamp body (1) positioned at one side of the positioning block (6) is an inclined plane.

9. A diesel tappet drilling device as set forth in claim 1 or 2 or 3 or 5 or 6 or 8, characterized in that:

The drill jig (3) is connected with a pressing screw (4) which is vertically arranged in a threaded manner, and the lower end of the pressing screw (4) is arranged in the placing groove.

10. A diesel tappet drilling device as set forth in claim 3, wherein:

The movable joint bolt (7) is fixedly connected with the clamp body (1) through a pin (8).