CN211614433U - A multifunctional special drilling guide device - Google Patents

Abstract

The utility model discloses a multifunctional special drilling guide device, which belongs to a drilling tool and solves the problem that the existing drill sleeve cannot guarantee the shape and position accuracy of the machined hole system because it has only one guiding inner hole; The guiding device includes a drill template and a drill sleeve, the drill sleeve is installed on the drill template through a flat key, and the drill sleeve is pressed on the drill template by screws, and the drill sleeve is respectively opened along its axis direction There are a first guide hole and a second guide hole, the outer periphery of the drill sleeve is respectively provided with a radial positioning surface and an axial positioning surface, and one side of the radial positioning surface is provided with a matching surface for the flat key. An installation groove, a side of the axial positioning surface away from the installation groove is provided with a cut surface abutting against the stud of the screw. The utility model can ensure that the machined hole system can reach the required shape and position accuracy, and can reduce the investment of the drill sleeve and the drill template, and improve the production efficiency.

Description

A multifunctional special drilling guide device

technical field

The utility model relates to a drilling device, in particular to a multifunctional special drilling guide device.

Background technique

In the process of machining and machining of engine cylinder block and cylinder head, the hole is an important surface on the cylinder block, cylinder head and other parts, and it is also the surface often encountered in machining. The inner hole surface is one of the important surfaces that make up the mechanical parts. First, parts with holes generally account for 50% to 80% of the total number of parts. The processing requirements of holes include dimensional accuracy, shape accuracy, position accuracy, and surface quality. For holes with low precision requirements, such as through holes for through bolts, oil holes and threaded bottom holes, etc., a conventional drill sleeve can be installed on the drilling template to cooperate with the processing to meet the drawing requirements. However, there are also many holes on the parts that require shape and position accuracy such as hole spacing, hole edge distance, and the parallelism of each hole axis, and the hole spacing between these holes is very small, such as the holes of the two cooling nozzle mounting holes on the cylinder block. The distance is only 10mm. When using a conventional drill sleeve with only one guide inner hole for processing on the drill template, due to the extremely small hole spacing of these holes, it is impossible to arrange and install two drill sleeves on the same drill template, which requires two drill templates. The two conventional drill sleeves with only one guide inner hole are arranged and installed separately on the upper part of the machine, and the investment required will increase, and when machining holes with stricter hole spacing and other shape and position accuracy on different drill templates, the two There will be differences between templates and between two conventional drill sleeves, making it difficult for holes with stricter hole spacing requirements to achieve the accuracy required by the drawing. In addition, the current drill sleeve installation is directly welded, and there is a problem of inconvenience in disassembly and assembly.

Utility model content

The purpose of the utility model is to provide a multifunctional special drilling guide device, which can ensure that the machined hole system reaches the required shape and position accuracy by using the special drill sleeve, and can reduce the investment of the drill sleeve and the drill template, and improve the production efficiency. .

The technical scheme adopted by the utility model is as follows:

A multifunctional special drilling guide device includes a drill template and a drill sleeve, the drill sleeve is installed on the drill template by a flat key, and the drill sleeve is pressed on the drill template by screws, and the drill sleeve is pressed on the drill template by screws. The drill sleeve is respectively provided with a first guide hole and a second guide hole along its axial direction, the outer periphery of the drill sleeve is respectively provided with a radial positioning surface and an axial positioning surface, and one side of the radial positioning surface is provided with a In the installation groove that the flat key is adapted to, the side of the axial positioning surface away from the installation groove is provided with a cut surface abutting against the stud of the screw.

Further, the diameter of the axial positioning surface is larger than the diameter of the radial positioning surface.

Further, the axes of the first guide hole and the second guide hole are both located in the vertical direction of the tangent plane.

Further, the axes of the first guide hole and the second guide hole are located on the same plane as the axis of the drill sleeve.

Further, the top end of the installation groove extends to the axial positioning surface.

Further, the cut surface is flush with the edge of the radial positioning surface.

Further, the outer periphery of the drill sleeve is also provided with an installation cylindrical surface, and the diameter of the installation cylindrical surface is smaller than the diameter of the radial positioning surface.

Compared with the prior art, the present utility model has the beneficial effects as follows: a first guide hole and a second guide hole are respectively opened in the axial direction of the drill sleeve, and through the first guide hole and the second guide hole, a relatively Guided machining of holes with small hole pitch, and can ensure that the machined holes meet the required shape and position accuracy. A radial positioning surface and an axial positioning surface are respectively provided on the periphery of the drill sleeve. The side is provided with an installation groove that matches the flat key, and the side of the axial positioning surface away from the installation groove is provided with a cut surface that abuts against the stud of the screw. The positioning function can quickly locate the installation position of the drill sleeve, and is convenient for disassembly and assembly.

Description of drawings

The accompanying drawings described here are used to provide further understanding of the present invention and constitute a part of the present application. The schematic embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the structural representation of the present utility model;

Fig. 2 is the three-dimensional structure schematic diagram of drill sleeve in Fig. 1;

Fig. 3 is the front view structure schematic diagram of drill sleeve in Fig. 1;

Fig. 4 is the top-view structure schematic diagram of drill sleeve in Fig. 1;

Fig. 5 is the sectional structure schematic diagram of drill sleeve in Fig. 1;

In the figure, 1, drill template, 2, drill sleeve, 21, first guide hole, 22, second guide hole, 23, radial positioning surface, 24, axial positioning surface, 25, installation groove, 26, cut surface, 27. Install cylindrical surface, 3. Flat key, 4. Screw.

Detailed ways

The technical solutions of the present utility model will be further described in detail below in conjunction with the specific embodiments, but do not constitute any limitation to the present utility model.

Referring to FIGS. 1 to 5 , a multifunctional special-purpose drilling guide device of the present invention includes a drill template 1 and a drill sleeve 2. The drill sleeve 2 is installed on the drill template 1 through a flat key 3, and the drill sleeve 2 The screw 4 is pressed on the drill template 1, the drill sleeve 2 is respectively provided with a first guide hole 21 and a second guide hole 22 along its axial direction, and the outer periphery of the drill sleeve 2 is respectively provided with a radial positioning surface 23 and an axial positioning surface 23. Surface 24, one side of the radial positioning surface 23 is provided with an installation groove 25 that is adapted to the flat key 3, and the side of the axial positioning surface 24 away from the installation groove 25 is provided with a tangent surface that abuts against the stud of the screw 4 . Place the flat key 3 in the installation groove 25, then install the drill sleeve 2 on the drill template 1, and tighten the screw 4 on the drill template 1, so that the stud of the screw 4 is connected to the cut surface 26 on the axial positioning surface 24. At this time, the head of the screw 4 is pressed against the top surface of the drill sleeve 2, thereby restricting the movement of the drill sleeve 2 on the drill template 1 along the axis direction, so as to prevent the drill sleeve 2 from being removed from the drill template 1. At the same time, the drill sleeve 2 is connected with the drill template 1 through the flat key 3, which can prevent the drill sleeve 2 from rotating during the machining process and affect the machining accuracy of the hole system, and the installation angle of the drill sleeve 2 can be determined by the cut surface 26. , position and install the drill sleeve 2.

Preferably, the diameter of the axial positioning surface 24 is larger than the diameter of the radial positioning surface 23, and the axial positioning surface 24 and the radial positioning surface 23 are connected by one end surface, through which the axial movement of the drill sleeve 2 can be restricted, The drill sleeve 2 can be positioned in the axial direction.

Preferably, the axes of the first guide hole 21 and the second guide hole 22 are both located in the vertical direction of the tangent plane 26, and through the positional relationship between the first guide hole 21 and the second guide hole 22 and the tangent plane 26, the tangent plane 26 Quickly locate the installation angle of the drill sleeve 2 so that the positions of the first guide holes 21 and the second guide holes 22 on the drill sleeve 2 correspond to the positions of the holes to be processed.

Preferably, the axes of the first guide hole 21 and the second guide hole 22 are located on the same plane as the axis of the drill sleeve 2, so that the guide accuracy of the first guide hole 21 and the second guide hole 22 can be ensured, and the machined hole can be ensured. The shape and position accuracy of the system.

Preferably, the top end of the installation groove 25 extends to the axial positioning surface 24 to ensure an effective contact area between the flat key 3 and the installation groove 25, and to ensure the stable installation of the drill sleeve 2. In order to ensure that the drill sleeve 2 is processed and installed The rigidity and strength of the groove 25 will not be affected, and the thickness can be increased on the outer circumference of the drill sleeve 2 with a thinner wall thickness.

Preferably, the cut surface 26 is flush with the edge of the radial positioning surface 23 to ensure a sufficiently large contact surface between the drill sleeve 2 and the stud of the screw 4 , thereby improving the stability of the screw 4 pressing the drill sleeve 2 .

Preferably, the outer periphery of the drill sleeve 2 is further provided with an installation cylindrical surface 27, and the diameter of the installation cylindrical surface 27 is smaller than the diameter of the radial positioning surface 23. By installing the cylindrical surface 27, the drill sleeve 2 can be installed on the drill template 1 .

At the bottom of the mounting hole of the drill sleeve 2 of the drill template 1 are three inclined blocks that are inclined upward. When the screw 4 presses the drill sleeve 2 downward, the outer wall of the drill sleeve 2 contacts the inclined blocks to automatically correct the center, and at the same time the drill sleeve 2 Both ends are supported to reduce vibration during machining.

When the above-mentioned special drill sleeve is in use, according to the position of the hole system to be processed, the installation angle of the drill sleeve 2 is adjusted by the position of the cut surface 26, so that the first guide hole 21 and the second guide hole 22 on the drill sleeve 2 are adjusted. Corresponding to the positions of the holes to be processed, the drill sleeve 2 is installed on the drill template 1 through the flat key 3, and then the screw 4 is tightened on the drill template 1, so that the stud of the screw 4 is connected to the drill sleeve 2. The cut surfaces 26 are in contact, and the head of the screw 4 is pressed against the top surface of the drill sleeve 1 , thereby fixing the installation position of the drill sleeve 1 . The diameter and length of the first guide hole 21 and the second guide hole 22 are determined according to the tool guide diameter and the drilling template, and there are strict hole spacing requirements between the two, which are used to ensure the machining between holes with small clearance and hole spacing. The shape and position accuracy is equivalent to combining two conventional drill sleeves with only one guide inner hole into one drill sleeve with double guide inner holes, which not only reduces investment, improves efficiency, but also better guarantees strict hole spacing requirements. The machining accuracy of the hole is high, and the effect of one plus one is greater than two.

The above are only preferred embodiments of the present invention, and any modifications, equivalent replacements and improvements made within the spirit and principle scope of the present invention should be included within the protection scope of the present invention.

Claims (7)

1. The utility model provides a multi-functional special drilling guider, includes bushing plate (1), its characterized in that: the drilling jig is characterized by further comprising a drill bushing (2), the drill bushing (2) is installed on the drill plate (1) through a flat key (3), the drill bushing (2) is tightly pressed on the drill plate (1) through a screw (4), the drill bushing (2) is respectively provided with a first guide hole (21) and a second guide hole (22) along the axis direction of the drill bushing, the periphery of the drill bushing (2) is respectively provided with a radial positioning surface (23) and an axial positioning surface (24), one side of the radial positioning surface (23) is provided with an installation groove (25) matched with the flat key (3), and one side, far away from the installation groove (25), of the axial positioning surface (24) is provided with a tangent plane (26) abutted to a stud of the screw (4).

2. The multi-functional specialized drill guide of claim 1, wherein: the diameter of the axial positioning surface (24) is larger than that of the radial positioning surface (23).

3. The multi-functional specialized drill guide of claim 1, wherein: the axes of the first guide hole (21) and the second guide hole (22) are both positioned in the vertical direction of the tangent plane (26).

4. A multi-functional specialized drill guide according to claim 3, wherein: the axes of the first guide hole (21) and the second guide hole (22) and the axis of the drill bushing (2) are positioned on the same plane.

5. The multi-functional specialized drill guide of claim 1, wherein: the top end of the mounting groove (25) extends to the axial positioning surface (24).

6. The multi-functional specialized drill guide of claim 1, wherein: the tangent plane (26) is flush with the edge of the radial positioning surface (23).

7. The multi-functional specialized drill guide of claim 1, wherein: the periphery of the drill bushing (2) is further provided with an installation cylindrical surface (27), and the diameter of the installation cylindrical surface (27) is smaller than that of the radial positioning surface (23).

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