CN111230995A

CN111230995A - Drilling tool for composite U-shaped parts with various curvatures

Info

Publication number: CN111230995A
Application number: CN202010179559.0A
Authority: CN
Inventors: 黄炎; 石群; 孙国雁
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-06-05
Anticipated expiration: 2040-03-16
Also published as: CN111230995B

Abstract

The invention belongs to the technical field of composite material member manufacturing, and particularly relates to a drilling tool for a composite material U-shaped member with various curvatures, which comprises two retractable supporting frames, two rotating frames with a stretching function and a sleeve with a retractable length; wherein the both ends of sleeve pipe are connected with collapsible support frame respectively, and a swivel mount is connected to the upper end of every collapsible support frame. The drilling tool for the composite U-shaped parts with various curvatures adopts a set of drilling tool to complete the drilling process of the U-shaped parts, and solves the problem that each set of U-shaped parts needs to be provided with a set of special drilling jig tool to drill the positioning hole at the middle position. The drilling operation of the full size of the U-shaped composite material piece can be realized, the drilling accuracy and the drilling efficiency are improved, and meanwhile, the drilling operation is simpler and more convenient.

Description

Drilling tool for composite U-shaped parts with various curvatures

Technical Field

The invention belongs to the technical field of composite material component manufacturing, and particularly relates to a drilling tool for composite material U-shaped parts with various curvatures.

Background

The follow-up procedures of curing and molding of the composite material part are mainly divided into two parts of blanking and drilling, the blanking procedure mainly guarantees the profile precision through a numerical control machine tool and a milling tool, and the drilling precision is mainly related to the following factors: the precision of the tool positioning hole, the self strength of the drill jig, the precision of the drill jig hole, the rebound curvature of a part, the drilling proficiency of a worker or the drilling precision of a machine tool and the like. The drilling of the composite part is divided into two modes of manual drilling and mechanical drilling, wherein the manual drilling is mainly suitable for parts with small hole size and thin hole thickness, and the mechanical drilling is mainly suitable for parts with large hole size and thick hole thickness.

The holes of the composite material part are mainly divided into four types: assembling holes, water discharging holes, manufacturing holes and positioning holes. The drain hole and the manufacturing hole have lower requirements on the self-precision and the position precision of the hole due to the use, the assembly hole and the positioning hole are used for determining the position of the part and assembling, and the position precision and the self-precision of the hole are higher. Holes with low precision requirements can be formed by marking holes and center cross lines at the designated positions of a forming tool, and drilling holes according to the cross lines printed on the parts after the parts are cured and formed. Holes with high precision requirements need to be drilled by a drill jig, and the drill jig is positioned through a pin hole in the forming tool. When the position of the hole is on the outer side of the part, the pin hole is designed to be positioned at two points, the size of the drill jig is small, and the requirement on the strength of the drill jig is low; when the position of hole is in the middle of the part or when inboard position, the jig needs to be designed into bridge type structure, and the jig adopts the multiple spot location, because the jig size is great, leads to self stability not enough, needs to design some supplementary ribs and strengthens the holistic intensity of jig. When a plurality of high-precision holes need to be drilled on some small parts, a set of drilling jig tool needs to be designed, and the tool is specially used for drilling. When some parts with thick sizes need to drill high-precision holes, a set of drilling tool with enough strength needs to be designed, and the drilling tool is matched with a numerical control machine tool to drill holes.

Type of composite part requiring drilling: siding, beams, U-skin, and the like. The wallboard part generally only needs higher precision for an assembling hole on the lug, a small-size drill jig can be used for drilling, holes in the wallboard are drain holes, and the wallboard part can be directly drilled after demoulding due to low precision requirement; the assembly holes on the lugs at the two sides of the beam part and the middle positioning hole have high precision requirements, the holes on the lugs at the two sides can be drilled by using small-size drill jigs, and the middle positioning hole needs to be drilled by using a bridge-shaped drill jig; u type covering class part edge pilot hole and middle locating hole required precision are high, can produce certain resilience deformation after the U type part shaping, need guarantee part and frock laminating through instrument such as clamp plate when returning child drilling, reuse the jig to drill, the drill jig can only bore edge pilot hole, middle locating hole then can't use the jig to drill, need design one set of dedicated jig frock and drill, not unidimensional, the U type spare of camber all needs solitary drilling frock, so that the cost of frock is too high.

Disclosure of Invention

The invention provides a set of drilling tool design method for solving the problem that a positioning hole in the middle of a U-shaped part is difficult to drill, and the method solves the problem that special drilling tools are required to be arranged on several parts.

The invention provides a drilling tool for composite U-shaped parts with various curvatures, wherein a set of drilling tool support is designed, and the drilling of positioning holes in U-shaped parts with different sizes and curvatures in a certain range can be completed by replacing drill jigs or drill sleeves with different sizes.

The technical scheme of the invention is as follows:

a drilling tool for composite U-shaped parts with various curvatures comprises two retractable support frames 1, two rotating frames 2 with stretching functions and a sleeve 3 with a telescopic length; wherein the both ends of sleeve pipe 3 are connected with collapsible support frame 1 respectively, and a swivel mount 2 is connected to the upper end of every collapsible support frame 1.

The retractable support frame 1 comprises a lifting rod 103 and three inclined rods 104, wherein one ends of the three inclined rods 104 are uniformly connected to the outer wall of the lifting rod 103 at the same horizontal plane and can rotate along the connection position; the middle part of the lifting rod 103 is sleeved with a connecting seat 105, the connecting seat 105 can slide along the lifting rod 103, the outer wall of each inclined rod 104 is sleeved with a sliding sleeve, and the outer wall of the sliding sleeve of each inclined rod 104 is connected with the outer wall of the connecting seat 105 through a connecting rod 106; an elastic handle 102 is arranged above the connection part of the inclined rod 104 and the lifting rod 103 on the retractable lifting rod 103, and the height of the retractable lifting rod 103 is adjusted through the elastic handle 102 and each inclined rod 104; the upper end of the lifting rod 103 is provided with a connecting piece 101 for connecting the rotating frame 2, the lower end of each inclined rod 104 is provided with a universal wheel 107 and a support leg 108, when in use, the inclined rods 104 are supported and fixed through the support legs 108, and the support legs 108 are opened after use to retract the inclined rods 104.

The rotating frame 2 comprises a T-shaped sleeve 203, three sliding rods 202 and an indexing disc 205, and the sliding rods 202 and the indexing disc 205 are connected through the T-shaped sleeve 203; a sliding rod 202 is arranged in each of three directions of the T-shaped sleeve 203, the three sliding rods 202 independently slide relative to the T-shaped sleeve 203 and are fixed in position through knurled high-head screws 204 on the side wall of the end part of each direction of the T-shaped sleeve 203; the end of each sliding rod 202 is provided with a C-shaped joint 201, the C-shaped joint 201 can rotate and is provided with a locking pin, the C-shaped joint 201 is used for fixing the position of a part, and rubber is arranged on the inner side of the C-shaped joint 201 and is used for protecting the surface of the part; the indexing disk 205 is used to rotate the turret 2 at different angles.

The sleeve 3 is connected between the two retractable support frames 1, a pin hole is formed in the outer pipe 303 of the sleeve 3 at intervals, the inner pipe 302 of the sleeve 3 is provided with an avoiding groove in the corresponding pin hole, the sleeve 3 is used for fixing the positions of different drill jig tools 5, and one ends, far away from each other, of the outer pipe 303 and the inner pipe 302 are respectively provided with a connecting pipe 301 for being connected with the retractable support frames 1.

The invention has the advantages that:

compared with the prior art, the drilling jig has the advantages that a set of drilling tool is adopted to complete the drilling process of the U-shaped part, and the problem that each set of U-shaped part needs to be provided with a set of special drilling jig tool to drill the positioning hole at the middle position is solved. The drilling operation of the full size of the U-shaped composite material piece can be realized, the drilling accuracy and the drilling efficiency are improved, and meanwhile, the drilling operation is simpler and more convenient.

Drawings

Fig. 1 is a schematic structural diagram of a drilling tool for composite U-shaped parts with various curvatures, which is provided in an embodiment of the invention.

Fig. 2 is a schematic structural diagram of a retractable support frame for a multi-curvature composite U-shaped part drilling tool provided in an embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a rotating frame for a multi-curvature composite U-shaped part drilling tool provided in an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a casing pipe for a multi-curvature composite U-shaped part drilling tool provided in an embodiment of the present invention.

In the figure: 1, a retractable support frame; 2, a rotating frame; 3, sleeving a sleeve; 4, parts; 5, drilling a die tool; 101 a connecting piece; 102 loosening and tightening the handle; 103 a lifting rod; 104 a diagonal rod; 105 a connecting seat; 106 connecting rods; 107 universal wheels; 108 a leg; a type 201C connector; 202 a slide bar; 203T-shaped sleeve; 204 knurled screw heads; 205 an index plate; 301 connecting pipe; 302 an inner tube; 303, an outer tube.

Detailed Description

The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.

It is to be understood that the appended drawings are not to scale, but are merely drawn with appropriate simplifications to illustrate various features of the basic principles of the invention. Specific design features of the invention disclosed herein, including, for example, specific dimensions, orientations, locations, and configurations, will be determined in part by the particular intended application and use environment.

In the several figures of the drawings, identical or equivalent components (elements) are referenced with the same reference numerals.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Fig. 1 is a schematic structural diagram of a drilling tool for composite U-shaped parts with various curvatures, which is provided in an embodiment of the invention. Referring to fig. 1, in the embodiment, the tool for drilling the U-shaped composite parts with various curvatures comprises two retractable support frames 1, two rotating frames 2 with stretching functions, and a sleeve 3 with a retractable length; wherein the both ends of sleeve pipe 3 are connected with collapsible support frame 1 respectively, and a swivel mount 2 is connected to the upper end of every collapsible support frame 1.

Fig. 2 is a schematic structural diagram of a retractable support frame for a multi-curvature composite U-shaped part drilling tool provided in an embodiment of the present invention. Referring to fig. 2, in the present embodiment, the retractable supporting frame 1 includes a lifting rod 103 and three inclined rods 104, wherein one end of each of the three inclined rods 104 is uniformly connected to an outer wall of the lifting rod 103 at the same horizontal plane, and can rotate along the connection; the middle part of the lifting rod 103 is sleeved with a connecting seat 105, the connecting seat 105 can slide along the lifting rod 103, the outer wall of each inclined rod 104 is sleeved with a sliding sleeve, and the outer wall of the sliding sleeve of each inclined rod 104 is connected with the outer wall of the connecting seat 105 through a connecting rod 106. The telescopic lifting rod 103 is provided with an elastic handle 102 above the joint of the inclined rod 104 and the lifting rod 103, and the telescopic lifting rod 103 can be adjusted in height through the elastic handle 102 and each inclined rod 104; the upper end of the lifting rod 103 is provided with a connecting member 101, such as a connecting plate or a round tube, for connecting the rotating frame 2, and a universal wheel 107 and a foot 108 are arranged below each inclined rod 104, so that the inclined rods 104 are supported and fixed by the foot 108 when in use, and the foot 108 is opened after use to collect the inclined rods 104.

The rotating frame 2 comprises a T-shaped sleeve 203, three sliding rods 202 and an index plate 205, and the sliding rods 202 and the index plate 205 are connected through the T-shaped sleeve 203; a sliding rod 202 is arranged in each of three directions of the T-shaped sleeve 203, the three sliding rods 202 can independently slide relative to the T-shaped sleeve 203 for a certain distance, and the positions of the three sliding rods 202 are fixed by using knurled high-head screws 204 arranged on the side walls of the end parts of the T-shaped sleeve 203 in each direction, namely the positions of the sliding rods 202 are locked. The end of each sliding rod 202 is provided with a C-shaped joint 201, the C-shaped joint 201 can rotate 180 degrees and is provided with a locking pin, and the C-shaped joint 201 is used for fixing the position of a part. Rubber is arranged on the inner side of the C-shaped joint 201 and used for protecting the surface of a part; the index plate 205 is used for the rotating frame 2 to rotate at different angles, the index plate 205 punches holes according to the angle value required to rotate, each hole is rotated by a corresponding angle representing that the rotating frame 2 rotates to the angle required to rotate, and the index plate 205 and the retractable support frame 1 are fixed together through a pin.

The sleeve 3 with the variable length is connected between the two retractable support frames 1, the length of the sleeve 3 is determined by the relative positions of the two retractable support frames 1, pin holes are formed in the outer tube 303 of the sleeve 3 at intervals, the inner tube 302 of the sleeve 3 is separated from the avoidance grooves in the corresponding pin hole positions, and the sleeve 3 is used for fixing the positions of different drilling jigs or different holes. According to the tool designed by the method, the drilling of the middle positioning hole of the U-shaped part with different sizes and curvatures in a certain range can be completed by changing different drill jigs or changing drill bushings, and one ends, far away from each other, of the outer pipe 303 and the inner pipe 302 are respectively provided with a connecting pipe 301 for connecting with the retractable support frame 1.

The invention provides a using method of a drilling tool for composite U-shaped parts with various curvatures, which comprises the following steps:

1. two sets of retractable support frames 1 are manufactured by using accessories such as steel pipes, the retractable support frames 1 are composed of three inclined rods 104 and a lifting rod 103, the height of the retractable lifting rod 103 can be adjusted through an elastic handle 102, the inclined rods 104 are connected with the lifting rod 103 through a connecting seat 105 and a connecting rod 106, and each inclined rod 104 is provided with a universal wheel 107 and a supporting leg 108 for moving and fixing the retractable support frame 1, as shown in fig. 2.

2. Two sets of rotating frames 2 are manufactured by using steel pipes, index plates 205 and the like, three sliding rods 202 on the rotating frames 2 can independently extend and retract in T-shaped sleeves 203 and fix the positions of the T-shaped sleeves, and C-shaped joints 201 at the ends fix the positions of parts, and rubber is bonded in the parts to protect the surfaces of the parts, and the parts are shown in figure 3.

3. A sleeve 3 with a telescopic length is manufactured by using a steel pipe, a pin hole is drilled in the outer pipe 303 at intervals of a small distance, and an avoiding groove is drilled in the inner pipe 302 at the corresponding position of the pin hole, as shown in fig. 4.

4. The retractable support frame 1, the rotating frame 2 and the sleeve 3 are combined into a set of drilling tool, the position of the tool is preliminarily adjusted and fixed according to the size of a part 4, the part 4 is clamped on the tool, and a matched drilling jig tool 5 is installed for drilling, see fig. 1.

5. All holes with the same spacing of the parts 4 can be drilled according to the adjustment of the sleeve 3 with the telescopic length and the dividing disc 205. The tool is simple in structure and convenient to operate, and drilling of the middle positioning holes in the U-shaped piece with different sizes and curvatures in a certain range at the same interval can be completed by changing different drill jigs or drill bushings.

The above description of exemplary embodiments has been presented only to illustrate the technical solution of the invention and is not intended to be exhaustive or to limit the invention to the precise form described. Obviously, many modifications and variations are possible in light of the above teaching to those skilled in the art. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to thereby enable others skilled in the art to understand, implement and utilize the invention in various exemplary embodiments and with various alternatives and modifications. It is intended that the scope of the invention be defined by the following claims and their equivalents.

Claims

1. The drilling tool for the composite U-shaped parts with various curvatures is characterized by comprising two retractable support frames (1), two rotating frames (2) with stretching functions and a sleeve (3) with a retractable length; wherein two ends of the sleeve (3) are respectively connected with the retractable support frames (1), and the upper end of each retractable support frame (1) is connected with a rotating frame (2);

the retractable support frame (1) comprises a lifting rod (103) and three inclined rods (104), wherein one ends of the three inclined rods (104) are uniformly connected to the outer wall of the lifting rod (103) at the same horizontal plane and can rotate along the connection position; the middle part of the lifting rod (103) is sleeved with a connecting seat (105), the connecting seat (105) can slide along the lifting rod (103), the outer wall of each inclined rod (104) is sleeved with a sliding sleeve, and the outer wall of the sliding sleeve of each inclined rod (104) is connected with the outer wall of the connecting seat (105) through a connecting rod (106); an elastic handle (102) is arranged above the joint of the inclined rod (104) and the lifting rod (103) on the retractable lifting rod (103), and the height of the retractable lifting rod (103) is adjusted through the elastic handle (102) and each inclined rod (104); the upper end part of the lifting rod (103) is provided with a connecting piece (101) for connecting the rotating frame (2), the lower end of each inclined rod (104) is provided with a universal wheel (107) and a supporting leg (108), when in use, the inclined rods (104) are supported and fixed through the supporting legs (108), and when in use, the supporting legs (108) are opened to retract the inclined rods (104);

the rotating frame (2) comprises a T-shaped sleeve (203), three sliding rods (202) and an indexing disc (205), and the sliding rods (202) and the indexing disc (205) are connected through the T-shaped sleeve (203); a sliding rod (202) is arranged in each of three directions of the T-shaped sleeve (203), the three sliding rods (202) independently slide relative to the T-shaped sleeve (203), and are fixed in position through knurled high-head screws (204) positioned on the side wall of the end part of each direction of the T-shaped sleeve (203); the end of each sliding rod (202) is provided with a C-shaped joint (201), the C-shaped joint (201) can rotate and is provided with a locking pin, the C-shaped joint (201) is used for fixing the position of a part, and rubber is arranged on the inner side of the C-shaped joint (201) and is used for protecting the surface of the part; the dividing disc (205) is used for rotating the rotating frame (2) at different angles;

sleeve pipe (3) connect between two collapsible support frame (1), a pinhole is seted up every a section interval on outer tube (303) of sleeve pipe (3), the groove of dodging is seted up in corresponding pinhole position in inner tube (302) of sleeve pipe (3), the fixed position that sleeve pipe (3) are used for different jig frocks (5), outer tube (303) and inner tube (302) keep away from each other one end respectively is provided with a connecting pipe (301) for be connected with collapsible support frame (1).