阅读说明：本技术 一种斜孔钻削装置及其应用方法 (inclined hole drilling device and application method thereof ) 是由 王文仲 王薇 王斌 李海刚 汝怡 于 2019-09-17 设计创作，主要内容包括：本发明提供了一种斜孔钻削装置及其应用方法,斜孔钻削装置主要由带斜面的支撑座、角度钻模块和固紧件组成,支撑座上的斜面可以为斜孔钻削装置提供与钻床的接触面,确保支撑座的放置倾斜角与工件待加工斜孔的角度一致,角度钻模块为钻头的钻孔提供精准定位,固紧件可以轴向压紧工件,保证加工斜孔过程中工件压紧可靠、受力均匀,支撑座、角度钻模块和固紧件相互配合工作确保钻孔过程切削平稳、变形量小、钻孔效率高。本发明保护的斜孔钻削装置不但适用于待加工斜孔的工件,也特别适用于对高精度脆性材料的斜孔钻削。(The invention provides an inclined hole drilling device and an application method thereof, the inclined hole drilling device mainly comprises a supporting seat with an inclined surface, an angle drilling module and a fastening piece, the inclined surface on the supporting seat can provide a contact surface with a drilling machine for the inclined hole drilling device, the placing inclination angle of the supporting seat is ensured to be consistent with the angle of an inclined hole to be processed of a workpiece, the angle drilling module provides accurate positioning for drilling of a drill bit, the fastening piece can axially compress the workpiece, the workpiece is ensured to be reliably compressed and uniformly stressed in the inclined hole processing process, and the supporting seat, the angle drilling module and the fastening piece are matched with each other to work so as to ensure that the drilling process is stable in cutting, small in deformation and high in drilling efficiency. The inclined hole drilling device protected by the invention is not only suitable for workpieces with inclined holes to be processed, but also particularly suitable for drilling inclined holes of high-precision brittle materials.)

1. an inclined hole drilling device is characterized in that: the angle drilling device comprises a rotary supporting seat (1) with a plurality of inclined planes, wherein an included angle formed by each inclined plane and the central axis of the supporting seat (1) is the same as the angle of an inclined hole to be processed of a workpiece, the supporting seat (1) is provided with two parallel and opposite end faces, the edge of one end face is clamped with a plurality of angle drilling modules (2) opposite to the inclined hole to be processed of the workpiece, and fastening pieces (3) concentric with and connected with the supporting seat (1) are arranged in a space formed by the angle drilling modules (2); each angle drill module (2) is provided with a drill bushing mounting hole (201) for inserting a drill bushing (4), and an included angle formed by the central axis of the drill bushing mounting hole (201) and the central axis of the support seat (1) is the same as the angle of an inclined hole to be machined in a workpiece.

2. The inclined hole drilling apparatus of claim 1, wherein: the supporting seat (1) is an integrally formed part consisting of a base (101) and a frustum pyramid part (102), the base (101) is provided with two parallel and opposite end faces, one end face is connected with the large-diameter end of the frustum pyramid part (102), and the inclined face is the pyramid face of the frustum pyramid part (102).

3. The inclined hole drilling apparatus of claim 2, wherein: an arc-shaped waist groove (103) used for clamping a workpiece lug is formed in the end face, far away from the ridge part (102), of the base (101), and the shape and the size of the arc-shaped waist groove (103) are the same as those of the workpiece lug.

4. The inclined hole drilling apparatus of claim 3, wherein: the angle drilling module (2) comprises a vertical rod (202) fixedly connected to the outer side surface of the base (101), the vertical rod (202) is parallel to the axial center line of the base (101), one end part of the vertical rod (202) extends upwards in an inclined mode to form a bent part (203), the bent part (203) is right opposite to the end surface of the base (101) where the arc-shaped waist groove (103) is located, the bottom plane of the bent part (203) and the vertical rod (202) form a right angle, and the right angle part is tightly attached to the base (101) and fixedly connected to the base through a bolt;

the drill bushing mounting hole (201) is formed in the bending portion (203), the drill bushing mounting hole (201) is in interference fit with the drill bushing (4), and the size and the shape of the drill bushing mounting hole (201) are the same as those of the drill bushing (4).

5. The inclined hole drilling apparatus of claim 4, wherein: the drill bushing (4) is provided with two end faces, wherein the end face close to the fastening piece (3) is an inclined plane (401), the end face of a bent part (203) where the inclined plane (401) is located is flush with the inclined plane (401), and all the inclined planes (401) are perpendicular to the end face of the base (101) where the arc-shaped waist groove (103) is located.

6. The inclined hole drilling apparatus of claim 2, wherein: the fastening piece (3) comprises a mandrel (301), one end of the mandrel (301) is screwed with a knurled nut (302), the other end of the mandrel (301) is fixedly connected with a pressing plate (303) concentric with the mandrel (301), and the pressing plate (303) is connected to the end face of the base (101) through a bolt.

7. The inclined hole drilling apparatus of claim 6, wherein: the end part of the mandrel (301) vertically penetrates through the pressing plate (303) and extends outwards to form a convex column (304), and the convex column (304) is inserted into a circular hole (104) in the center of the end face of the base (101).

8. The inclined hole drilling apparatus of claim 7, wherein: the diameter of the convex column (304) is larger than that of the mandrel (301).

9. The method for applying the inclined hole drilling device as claimed in any one of claims 1 to 8, comprising the steps of:

step S1, taking a workpiece to be processed with an inclined hole, penetrating the workpiece through a mandrel (301) and inserting the workpiece into a cavity between an angle drilling module (2) and a pressure plate (303) to ensure that the workpiece, the mandrel (301) and a supporting seat (1) are coaxial;

Step S2, rotating the inclined hole drilling device to insert and clamp the lugs on the workpiece in the arc-shaped waist groove (103) on the end surface of the base (101), and simultaneously enabling each angle drilling module (2) to be opposite to each inclined hole to be machined of the workpiece one by one;

Step S3, taking the split washer (5) to penetrate through the mandrel (301) to enable the split washer (5) to be tightly attached to the end face of one end of the workpiece far away from the supporting seat (1);

s4, screwing the knurled nut (302) to enable the end face of one end, close to the supporting seat (1), of the workpiece to be tightly attached to the end face of the base (101) where the arc-shaped waist groove (103) is located and to be compressed, and completing clamping and positioning of the workpiece;

Step S5, any inclined plane of the supporting seat (1) is tightly attached to a drilling machine, and a drill passes through the drill bushing (4) to drill a to-be-machined inclined hole of the workpiece;

And step S6, rotating the inclined hole drilling device, and continuously repeating the step S5 until all the inclined holes to be processed of the workpiece are drilled.

Technical Field

the invention belongs to the technical field of machining, and particularly relates to an inclined hole drilling device and an application method thereof, which are particularly suitable for drilling inclined holes of high-precision brittle materials.

Background

drilling is the most common procedure in the mechanical industry, and inclined holes are often drilled in some mechanical parts, and are generally used for connecting and mounting the parts, so that the technical parameters of the edge distance and the hole distance size of the holes are high.

However, the following problems exist in such inclined hole drilling, particularly in the inclined hole drilling of brittle materials:

(1) The brittle material is easy to fall off when being subjected to drilling stress, and has large deformation amount, thus the technical requirement cannot be met;

(2) When an inclined hole is drilled in a workpiece structure, the cutting force is not uniform, the center of the hole is easy to drift, the position error is large, and the precision is difficult to guarantee;

(3) The conventional method is adopted to drill the inclined hole, so that the efficiency is low and the cost is higher.

disclosure of Invention

The embodiment of the invention aims to provide an inclined hole drilling device and an application method thereof, and aims to solve the problems of hole center drift and large position error caused by uneven cutting force of an inclined hole when the inclined hole is machined by adopting a conventional method; the second purpose is to solve the problems that when the inclined hole is processed on the brittle material, the block is easy to fall off when the brittle material is drilled and stressed, so that the deformation is large and the technical requirements cannot be met.

In order to solve the technical problem, the invention provides an inclined hole drilling device which comprises a rotary support seat with a plurality of inclined surfaces, wherein an included angle formed by each inclined surface and the central axis of the support seat is the same as the angle of an inclined hole to be processed of a workpiece, the support seat is provided with two parallel and opposite end surfaces, the edge of one end surface is clamped with a plurality of angle drilling modules which are opposite to the inclined hole to be processed of the workpiece, and fastening pieces which are concentric with and connected with the support seat are arranged in a space formed by the angle drilling modules in a surrounding mode.

And each angle drill module is provided with a drill bushing mounting hole for inserting a drill bushing, and the included angle formed by the central axis of the drill bushing mounting hole and the central axis of the support seat is the same as the angle of the inclined hole to be processed of the workpiece.

furthermore, the supporting seat is an integrated part formed by a base and a prism table part, the base is provided with two parallel and opposite end faces, one end face is connected with the large-diameter end of the prism table part, and the inclined plane is the prism surface of the prism table part.

Preferably, an arc-shaped waist groove for clamping the workpiece lug is formed in the end face, far away from the ridge part, of the base, and the shape and the size of the arc-shaped waist groove are the same as those of the workpiece lug.

further, the angle drilling module comprises a vertical rod fixedly connected to the outer side surface of the base, the vertical rod is parallel to the axial center line of the base, one end of the vertical rod extends upwards in an inclined mode to form a bent portion, the bent portion is opposite to the end face of the base where the arc-shaped waist groove is located, the bottom plane of the bent portion and the vertical rod form a right angle, and the right angle portion is tightly attached to the base and fixedly connected to the base through a bolt.

The drill bushing mounting hole is formed in the bending part and is in interference fit with the drill bushing, and the size and the shape of the drill bushing mounting hole are the same as those of the drill bushing.

Preferably, the drill bushing has two end faces, wherein the end face close to the fastening member is an inclined plane, the end face of the bent portion where the inclined plane is located is flush with the inclined plane, and all the inclined planes are perpendicular to the end face of the base where the arc-shaped waist groove is located.

Furthermore, the fastening piece comprises a mandrel, one end of the mandrel is screwed with the knurled nut, the other end of the mandrel is fixedly connected with a pressing plate concentric with the mandrel, and the pressing plate is connected to the end face of the base through a bolt.

preferably, the end of the mandrel vertically penetrates through the pressing plate and extends outwards to form a convex column, and the convex column is inserted into a circular hole in the center of the end face of the base.

further, the diameter of the convex column is larger than that of the mandrel.

The invention also discloses an application method of the inclined hole drilling device, which comprises the following steps:

step S1, taking a workpiece to be processed with an inclined hole, penetrating the workpiece through a mandrel and inserting and sleeving the workpiece in a cavity between an angle drilling module and a pressure plate to ensure that the workpiece, the mandrel and a supporting seat are coaxial;

Step S2, rotating the inclined hole drilling device to insert and clamp the lugs on the workpiece in the arc waist grooves on the end surface of the base, and simultaneously enabling each angle drilling module to be opposite to each inclined hole to be processed of the workpiece one by one;

Step S3, taking the open gasket to penetrate through the mandrel, and enabling the open gasket to be tightly attached to the end face of one end of the workpiece far away from the supporting seat;

S4, screwing the knurled nut to enable the end face of the workpiece close to one end of the supporting seat to be tightly attached to the end face of the base where the arc-shaped waist groove is located and to be compressed, and completing clamping and positioning of the workpiece;

Step S5, any inclined plane of the supporting seat is tightly attached to the drilling machine, and the drill bit penetrates through the drill bushing to drill the inclined hole to be processed of the workpiece;

And step S6, rotating the inclined hole drilling device, and continuously repeating the step S5 until all the inclined holes to be processed of the workpiece are drilled.

The invention has the following beneficial effects:

The invention provides an inclined hole drilling device according to the characteristics of inclined hole drilling, which mainly comprises a supporting seat with an inclined surface, an angle drilling module and a fastening piece, wherein the inclined surface on the supporting seat can provide a contact surface with a drilling machine for the inclined hole drilling device, the placing inclination angle of the supporting seat is ensured to be consistent with the angle of an inclined hole to be processed of a workpiece, the angle drilling module provides accurate positioning for the drilling of a drill bit, the fastening piece can axially compress the workpiece, the workpiece is ensured to be reliably compressed and uniformly stressed in the inclined hole processing process, and the supporting seat, the angle drilling module and the fastening piece are mutually matched to work to ensure that the cutting in the drilling process is stable, the deformation is small and the drilling efficiency is high.

In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

drawings

Fig. 1 is a schematic structural view of an inclined hole drilling apparatus.

Fig. 2 is a schematic view of the structure of fig. 1 in the direction of K.

Fig. 3 is a schematic structural view of the support base.

Fig. 4 is a left side view of fig. 3.

Fig. 5 is a schematic structural diagram of an angle drill module.

Fig. 6 is a schematic view of the construction of the drill bushing.

Fig. 7 is a schematic view of a fastener.

Description of reference numerals:

1. a supporting seat; 2. an angle drill module; 3. a fastener; 4. drilling a sleeve; 5. a split washer;

101. a base; 102. a prismatic table portion; 103. an arc-shaped waist groove; 104. a circular hole;

201. Drilling a sleeve mounting hole; 202. a vertical rod; 203. a bending section;

301. a mandrel; 302. knurling the nut; 303. pressing a plate; 304. a convex column;

401. A plane is inclined.

Detailed Description

the following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

In the present invention, the upper, lower, left and right in the drawings are regarded as the upper, lower, left and right of the inclined hole drilling device described in the present specification.

the exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.

Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.

First embodiment

the first embodiment of the invention relates to an inclined hole drilling device, which comprises a rotary support seat 1 with a plurality of inclined planes, wherein an included angle formed by each inclined plane and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece, the support seat 1 is provided with two parallel and opposite end faces, the edge of one end face is clamped with a plurality of angle drilling modules 2 opposite to the inclined hole to be processed of the workpiece, and fastening pieces 3 concentric with and connected with the support seat 1 are arranged in a space formed by the angle drilling modules 2; each angle drill module 2 is provided with a drill bushing mounting hole 201 for inserting the drill bushing 4, and an included angle formed by the central axis of the drill bushing mounting hole 201 and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece.

Referring to fig. 1 and 2, the head of the support seat 1 has a plurality of inclined planes, and the inclined planes function as: when drilling inclined holes, the inclined planes are tightly attached to the drilling machine to provide supporting force for the supporting seat 1, the number of the inclined planes is the same as that of the inclined holes to be machined in workpieces, and the included angle formed by each inclined plane and the central axis of the supporting seat 1 is the same as that of the inclined holes to be machined in the workpieces.

In this embodiment, the most important part of the inclined hole drilling device is the angle drilling module 2, which is used for providing a channel for the drill to pass through, so that the drill can smoothly cut an inclined hole with a preset angle, as can be seen from fig. 1, the angle drilling module 2 is clamped with a circle along the seat body edge of the supporting seat 1, specifically, the number of the angle drilling modules 2 is the same as the number of inclined holes to be processed on the workpiece, and the included angle formed by the central axis of the drill bushing mounting hole 201 and the central axis of the supporting seat 1 is the same as the angle of the inclined hole to be processed on the workpiece.

that is to say, the number of the angle drilling modules 2, the number of the inclined planes of the supporting seat 1, and the number of the inclined holes to be processed in the workpiece are the same, and the outlets of the drill bushings 4 of the angle drilling modules 2 are opposite to the inclined holes to be processed in the workpiece.

In practical application, the workpiece is sleeved in a space formed by the angle drill modules 2 and the fastening pieces 3, and it should be noted that the fastening pieces 3 are used for axially pressing and positioning the workpiece, so that the workpiece is reliably pressed and uniformly stressed in the machining process, further, the inner surface of the workpiece is in contact with the fastening pieces 3, and the outer surface of the workpiece is in contact with the angle drill modules 2.

Specifically, the working process of the inclined hole drilling device provided by the embodiment is as follows:

Taking a workpiece to be processed with an inclined hole, penetrating the workpiece through the fastening piece 3 and inserting and sleeving the workpiece in a cavity between the angle drilling module 2 and the fastening piece 3 to ensure that the workpiece, the fastening piece 3 and the supporting seat 1 are coaxial; rotating the inclined hole drilling device to enable each angle drilling module 2 to be opposite to each inclined hole to be machined of the workpiece one by one; taking the open washer 5 to pass through the fastening piece 3, so that the open washer 5 is tightly attached to the end face of one end of the workpiece, which is far away from the supporting seat 1, and clamping and positioning the workpiece are completed; any inclined plane of the supporting seat 1 is tightly attached to a drilling machine, and a drill bit penetrates through the drill bushing 4 to drill a to-be-machined inclined hole of a workpiece; and rotating the inclined hole drilling device until all the inclined holes to be processed of the workpiece are drilled.

The invention provides an inclined hole drilling device according to the characteristics of inclined hole drilling, which mainly comprises a supporting seat with an inclined surface, an angle drilling module and a fastening piece, wherein the inclined surface on the supporting seat can provide a contact surface with a drilling machine for the inclined hole drilling device, the placing inclination angle of the supporting seat is ensured to be consistent with the angle of an inclined hole to be processed of a workpiece, the angle drilling module provides accurate positioning for the drilling of a drill bit, the fastening piece can axially compress the workpiece, the workpiece is ensured to be reliably compressed and uniformly stressed in the inclined hole processing process, and the supporting seat, the angle drilling module and the fastening piece are mutually matched to work to ensure that the cutting in the drilling process is stable, the deformation is small and the drilling efficiency is high.

Second embodiment

The second embodiment of the invention relates to an inclined hole drilling device, which comprises a rotary support seat 1 with a plurality of inclined planes, wherein an included angle formed by each inclined plane and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece, the support seat 1 is provided with two parallel and opposite end faces, the edge of one end face is clamped with a plurality of angle drilling modules 2 opposite to the inclined hole to be processed of the workpiece, and fastening pieces 3 concentric with and connected with the support seat 1 are arranged in a space formed by the angle drilling modules 2; each angle drill module 2 is provided with a drill bushing mounting hole 201 for inserting the drill bushing 4, and an included angle formed by the central axis of the drill bushing mounting hole 201 and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece.

As shown in fig. 3, the supporting seat 1 is an integral molding member composed of a base 101 and a frustum portion 102, the base 101 has two parallel and opposite end surfaces, one of the end surfaces is connected with the large diameter end of the frustum portion 102, and the inclined surface is the prism surface of the frustum portion 102.

the difference between this embodiment and the first embodiment is that the support seat 1 is an integrated part, which includes two parts, namely a base 101 and a frustum portion 102, the base 101 is used for clamping and positioning a workpiece, and the frustum portion 102 is used for providing a supporting force for the inclined hole drilling device to contact with the drilling machine.

it should be noted that the prism portion 102 can be a triangular prism, a rectangular prism … …, the specific number of which is the same as the number of the inclined holes to be processed on the workpiece, for example, the number of the inclined holes to be processed on the workpiece is 4, then the prism portion 102 is a rectangular prism, that is, it has four inclined surfaces, and each inclined surface is inclined at the same angle as the inclined hole to be processed on the workpiece, and the purpose is that: when the inclined plane of the supporting seat 1 is tightly attached to the drilling machine, the inclined hole drilling device is integrally in an inclined state, the workpiece is coaxial with the supporting seat 1, and the drill bit can drill the inclined hole with the angle consistent with that of the workpiece to be processed through the drill bushing 4.

third embodiment

The third embodiment of the invention relates to an inclined hole drilling device, which comprises a rotary support seat 1 with a plurality of inclined planes, wherein an included angle formed by each inclined plane and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece, the support seat 1 is provided with two parallel and opposite end faces, the edge of one end face is clamped with a plurality of angle drilling modules 2 opposite to the inclined hole to be processed of the workpiece, and fastening pieces 3 concentric with and connected with the support seat 1 are arranged in a space formed by the angle drilling modules 2; each angle drill module 2 is provided with a drill bushing mounting hole 201 for inserting the drill bushing 4, and an included angle formed by the central axis of the drill bushing mounting hole 201 and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece.

As shown in fig. 3, the supporting seat 1 is an integral molding member composed of a base 101 and a frustum portion 102, the base 101 has two parallel and opposite end surfaces, one of the end surfaces is connected with the large diameter end of the frustum portion 102, and the inclined surface is the prism surface of the frustum portion 102.

Referring to fig. 4, an end surface of the base 101 away from the prism portion 102 is provided with an arc-shaped waist groove 103 for clamping a workpiece lug, and the shape and size of the arc-shaped waist groove 103 are the same as those of the workpiece lug.

Specifically, the arc-shaped waist groove 103 is used for inserting a workpiece lug, so as to realize the positioning of the workpiece, such as: when accomplishing inclined hole A's drilling, when wanting the drilling next inclined hole B, rotatory inclined hole drilling device, make the drilling machine hug closely on the next inclined plane of supporting seat 1, drilling inclined hole B, can see out, inclined hole drilling device need rotate just can accomplish the drilling to all inclined holes, rotatory in-process work piece is possible roll-off, and arc waist groove 103 is as the adapting unit who connects work piece and base 101, can avoid the rotatory in-process of work piece to break away from inclined hole drilling device on the one hand, on the other hand also can be for installation clamping inclined hole drilling device, provide the location.

Fourth embodiment

On the basis of the third embodiment, referring to fig. 1 and 5, the angle drill module 2 includes a vertical rod 202 fixedly connected to the outer side surface of the base 101, the vertical rod 202 is parallel to the axial center line of the base 101, one end of the vertical rod 202 extends obliquely and upwardly to form a bent portion 203, the bent portion 203 faces the end surface of the base 101 where the arc-shaped waist slot 103 is located, the bottom plane of the bent portion 203 forms a right angle with the vertical rod 202, and the right angle portion is tightly attached to the base 101 and fixedly connected to the base 101 through a bolt; the drill bushing mounting hole 201 is formed in the bending portion 203, the drill bushing mounting hole 201 is in interference fit with the drill bushing 4, and the size and the shape of the drill bushing mounting hole 201 are the same as those of the drill bushing 4.

The angle drilling module 2 is a part for providing a channel for the insertion of a drill bit, specifically, the drill bushing 4 is firstly placed into the drill bushing mounting hole 201, the drill bushing 4 is in interference fit with the drill bushing mounting hole 201, then the drill bit extends into the drill bushing 4, the drill bit extends out of the drill bushing 4 and drills into a workpiece, and as an included angle formed by the central axis of the drill bushing mounting hole 201 and the central axis of the support seat 1 is the same as an angle of an inclined hole to be processed of the workpiece, the inclined hole can be drilled.

if the base 101 has a square/rectangular parallelepiped shape, the base 101 has four side surfaces, the side surfaces and the end surfaces form perpendicular right angles, the right angles overlap and engage with the right angle portions of the angle drill module 2, and the angle drill module 2 is fixed to the base 101 by bolts on the vertical rods 202.

In addition, a space for placing a workpiece is formed by the plurality of angle drill modules 2, the workpiece is limited in the space, when the workpiece is clamped, lugs of the workpiece are inserted in the arc-shaped waist grooves 103, and the drill bushing mounting holes 201 correspond to inclined holes to be machined in the workpiece one to one.

Fifth embodiment

On the basis of the fourth embodiment, referring to fig. 6, the drill bushing 4 has two end faces, wherein the end face close to the fastener 3 is an inclined plane 401, the end face of the bent portion 203 where the inclined plane 401 is located is flush with the inclined plane 401, and all the inclined planes 401 are perpendicular to the end face of the base 101 where the arc-shaped waist groove 103 is located.

When the workpiece is placed in the space formed by the inclined planes 401 of all the drill bushings 4, as shown in fig. 1, the inclined planes 401 are opposite to the outer surface of the workpiece, and the distance between the outlet of the drill bushings 4 and the surface of the workpiece to be processed is minimized during processing.

Specifically, the included angle formed by each inclined surface of the support seat 1 and the central axis of the support seat 1 is the same as the angle of the inclined hole to be processed of the workpiece, the included angle formed by the central axis of the drill bushing mounting hole 201 and the central axis of the support seat 1 is the same as the angle of the inclined hole to be processed of the workpiece, and the inclined plane 401 of the drill bushing 4 is perpendicular to the end surface of the base 101 where the arc-shaped waist groove 103 is located, so that the inclined hole is successfully processed under the above three conditions.

Sixth embodiment

In addition to the second embodiment, as shown in fig. 7, fastening member 3 includes a core shaft 301, a knurled nut 302 is screwed onto one end of core shaft 301, a pressing plate 303 concentric with core shaft 301 is fixed onto the other end, and pressing plate 303 is connected to the end surface of base 101 by bolts.

It should be noted that the arc-shaped waist groove 103 is tightly attached to the pressure plate 303 so as to realize the minimum distance between the outlet of the drill bushing and the surface to be processed of the workpiece.

Specifically, the pressing plate 303 is in close contact with the end surface of the base 101, the workpiece passes through the mandrel 301 and is inserted into the cavity between the angle drilling module 2 and the pressing plate 303, specifically, the inner wall of the workpiece is in contact with the pressing plate 303, the outer wall of the workpiece is in contact with the inclined plane 401 of the angle drilling module 2, and then the knurled nut 302 is screwed to enable the knurled nut 302 to be in contact with the end surface of the workpiece, so that the workpiece is axially compressed, the compression reliability in the machining process is ensured, the stress is uniform, the cutting in the drilling process is stable, and the deformation is small.

in order to further improve the positioning accuracy, the end of the mandrel 301 vertically penetrates through the pressing plate 303 and extends outwards to form a convex column 304, the convex column 304 is inserted into the circular hole 104 in the center of the end face of the base 101, and in order to ensure the stability during insertion, the diameter of the convex column 304 is larger than that of the mandrel 301.

Seventh embodiment

The embodiment provides an application method of an inclined hole drilling device, which comprises the following steps:

step S1, taking a workpiece to be processed with an inclined hole, penetrating the workpiece through the mandrel 301 and inserting the workpiece into a cavity between the angle drilling module 2 and the pressure plate 303 to ensure that the workpiece, the mandrel 301 and the supporting seat 1 are coaxial;

step S2, rotating the inclined hole drilling device to insert and clamp the lugs on the workpiece in the arc-shaped waist groove 103 on the end surface of the base 101, and simultaneously enabling each angle drilling module 2 to be opposite to each inclined hole to be processed of the workpiece one by one;

Step S3, taking the split washer 5 to pass through the mandrel 301, and enabling the split washer 5 to be tightly attached to the end face of one end of the workpiece, which is far away from the supporting seat 1;

Step S4, the knurled nut 302 is screwed, so that the end face of the workpiece close to one end of the supporting seat 1 is tightly attached to the end face of the base 101 where the arc-shaped waist groove 103 is located and is pressed tightly, and clamping and positioning of the workpiece are completed;

Step S5, any inclined plane of the supporting seat 1 is tightly attached to a drilling machine, and a drill bit penetrates through the drill bushing 4 to drill a to-be-machined inclined hole of the workpiece;

And step S6, rotating the inclined hole drilling device, and continuously repeating the step S5 until all the inclined holes to be processed of the workpiece are drilled.

the inclined hole drilling device comprises a rotary support seat 1 with a plurality of inclined planes, wherein an included angle formed by each inclined plane and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece, the support seat 1 is provided with two parallel and opposite end faces, the edge of one end face is clamped with a plurality of angle drilling modules 2 opposite to the inclined hole to be processed of the workpiece, and fastening pieces 3 which are concentric with the support seat 1 and connected with the support seat are arranged in a space formed by the angle drilling modules 2 in a surrounding mode; each angle drill module 2 is provided with a drill bushing mounting hole 201 for inserting the drill bushing 4, and an included angle formed by the central axis of the drill bushing mounting hole 201 and the central axis of the support seat 1 is the same as the angle of an inclined hole to be processed of a workpiece. The support seat 1 is an integral part composed of a base 101 and a frustum part 102, the base 101 has two parallel and opposite end faces, one of the end faces is connected with the large-diameter end of the frustum part 102, and the inclined plane is the prism surface of the frustum part 102. An arc-shaped waist groove 103 used for clamping a workpiece lug is formed in the end face, far away from the ridge part 102, of the base 101, and the shape and the size of the arc-shaped waist groove 103 are the same as those of the workpiece lug. The angle drilling module 2 comprises a vertical rod 202 fixedly connected to the outer side surface of the base 101, the vertical rod 202 is parallel to the axial center line of the base 101, one end of the vertical rod 202 extends upwards in an inclined mode to form a bent part 203, the bent part 203 is opposite to the end face of the base 101 where the arc-shaped waist groove 103 is located, the bottom plane of the bent part 203 and the vertical rod 202 form a right angle, and the right angle is tightly attached to the base 101 and fixedly connected to the base 101 through bolts; the drill bushing mounting hole 201 is formed in the bending portion 203, the drill bushing mounting hole 201 is in interference fit with the drill bushing 4, and the size and the shape of the drill bushing mounting hole 201 are the same as those of the drill bushing 4. The drill bushing 4 has two end faces, wherein the end face close to the fastening member 3 is an inclined plane 401, the end face of the bent portion 203 where the inclined plane 401 is located is flush with the inclined plane 401, and all the inclined planes 401 are perpendicular to the end face of the base 101 where the arc-shaped waist groove 103 is located. Fastener 3 includes spindle 301, one end of spindle 301 is screwed with knurled nut 302, and the other end is fixedly connected with a pressing plate 303 concentric with spindle 301, and pressing plate 303 is connected to the end face of base 101 by means of bolt. The end of the mandrel 301 vertically passes through the pressing plate 303 and extends outwards to form a convex column 304, the convex column 304 is inserted into the circular hole 104 in the center of the end face of the base 101, and the diameter of the convex column 304 is larger than that of the mandrel 301.

Eighth embodiment

In this embodiment, taking a certain workpiece in the XXX product as an example, the product requires that 4 inclined holes are uniformly distributed on the cylinder wall of the workpiece along the circumferential direction, and each inclined hole forms a 45-degree included angle with the central axis of the workpiece, and the inclined hole drilling device provided by the invention is used for drilling the workpiece, and the specific details are as follows:

Because 4 inclined holes are to be processed on a workpiece, a square base and a quadrangular frustum pyramid are selected as a supporting seat 1, the free end face (the left end face in fig. 3) of a square base 101 is named as a large positioning plane, a pressing plate 303 of a fastening piece 3 is tightly attached to the large positioning plane, a mandrel 301 of the fastening piece 3 is inserted into a round hole 104 in the center of the large positioning plane, an angle drilling module 2 is installed on each side of the square base 101, the workpiece penetrates through the mandrel 301 and is positioned in a space formed by the 4 angle drilling modules 2 and the large positioning plane, a lug of the workpiece is inserted into an arc-shaped waist groove 103, and then an opening gasket 5 is taken to penetrate through the mandrel 301, so that the opening gasket 5 is tightly attached to the end face of the workpiece, which is far; screwing the knurled nut 302 to enable the end face of one end, close to the supporting seat 1, of the workpiece to be tightly attached to the end face of the base 101 where the arc-shaped waist groove 103 is located and to be compressed, and completing clamping and positioning of the workpiece; any inclined plane of the supporting seat 1 is tightly attached to a drilling machine, and a drill bit penetrates through the drill bushing 4 to drill a to-be-machined inclined hole of a workpiece; and (5) rotating the inclined hole drilling device, and continuously repeating the step S5 until all the inclined holes to be processed of the workpiece are drilled.

particularly, after the workpiece is machined, the knurled nut 302 is loosened, the split washer 5 is pulled out, so that a gap is formed between the workpiece and the large positioning plane, elastic deformation is eliminated, and the workpiece can be freely detached along the axis direction of the mandrel.

In summary, the invention provides an inclined hole drilling device according to the characteristics of inclined hole drilling, the inclined hole drilling device mainly comprises a supporting seat with an inclined surface, an angle drilling module and a fastening piece, the inclined surface on the supporting seat can provide a contact surface with a drilling machine for the inclined hole drilling device, the placing inclination angle of the supporting seat is ensured to be consistent with the angle of an inclined hole to be processed of a workpiece, the angle drilling module provides accurate positioning for drilling of a drill bit, the fastening piece can axially compress the workpiece, the workpiece is reliably compressed and uniformly stressed in the inclined hole processing process, and the supporting seat, the angle drilling module and the fastening piece are mutually matched to work to ensure stable cutting, small deformation and high drilling efficiency in the drilling process.

In the above embodiments, the connection or installation between the components is preferably a bolt and a pin, but may be other types of connection in the mechanical field, and is not limited thereto.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.