阅读说明：本技术 一种折弯导电管钻孔工装 (Conductive tube drilling tool bends ) 是由 张丹丹 吴比 刘拥军 董长利 张全民 蒋玉婷 王安平 李真真 黄帅 郑晓磊 于 2019-07-02 设计创作，主要内容包括：本发明提供了一种折弯导电管钻孔工装,包括设有用于定位导电管的导电管定位结构的定位底座；还包括钻模块组,钻模块组包括第一钻模块组和第二钻模块组,各钻模块组由多个钻模块构成；第二钻模块组有两组且在固定于定位底座上时关于第一钻模块组的布置轴线对称设置；钻模块上安装有两组可更换的钻套,包括分别为用于对导电管的一侧面施钻的大孔钻套以及用于对导电管的另一侧面施钻的小孔钻套；定位底座上设有用于在对导电管的与定位底座相贴合的侧面进行施钻时避让钻头的避让空间；该折弯导电管钻孔工装对折弯导电管进行一次定位,通过更换不同的钻套,实现对非等径通孔的加工,保证了加工出来的孔具有较高的精度。(The invention provides a bending conductive tube drilling tool which comprises a positioning base, a positioning mechanism and a drilling mechanism, wherein the positioning base is provided with a conductive tube positioning structure for positioning a conductive tube; the drilling module group comprises a first drilling module group and a second drilling module group, and each drilling module group consists of a plurality of drilling modules; the two second drilling module groups are symmetrically arranged relative to the arrangement axis of the first drilling module group when being fixed on the positioning base; two groups of replaceable drill sleeves are arranged on the drill module, and each drill sleeve comprises a large-hole drill sleeve for drilling one side surface of the conductive pipe and a small-hole drill sleeve for drilling the other side surface of the conductive pipe; the positioning base is provided with an avoidance space for avoiding the drill bit when drilling is carried out on the side surface, attached to the positioning base, of the conductive pipe; the conductive tube bending and drilling tool is used for positioning the bent conductive tube once, and the non-equal-diameter through holes are machined by replacing different drill sleeves, so that the machined holes have high precision.)

1. The utility model provides a contact tube drilling frock of bending, characterized by includes:

the positioning base is provided with a conductive tube positioning structure for positioning the conductive tube;

the drilling module group comprises a first drilling module group and a second drilling module group, wherein the first drilling module group is fixed on the positioning base at the drilling hole position corresponding to the straight section of the conductive pipe, and the second drilling module group is fixed on the positioning base at the drilling hole position corresponding to the bent section of the conductive pipe;

the two second drilling module groups are symmetrically arranged relative to the arrangement axis of the first drilling module group when being fixed on the positioning base;

two groups of drill sleeves which are used for being arranged on the drill module in a replaceable way and are respectively a large-hole drill sleeve used for drilling one side surface of the conductive pipe and a small-hole drill sleeve used for drilling the other side surface of the conductive pipe;

the positioning base is provided with an avoiding space for avoiding the drill bit when drilling is carried out on the side surface, attached to the positioning base, of the conductive tube.

2. The conductive tube bending and drilling tool according to claim 1, wherein the positioning base is of a Y-shaped structure comprising a straight line section and two inclined sections which are connected to one end of the straight line section and symmetrically arranged relative to the straight line section, and the included angle between the straight line section and the inclined sections is equal to the bending angle of the bent conductive tube.

3. The conductive tube bending and drilling tool according to claim 2, wherein the positioning base is of a plate-shaped structure, and a containing notch for containing deformation of the conductive tube in the thickness direction at the bending position is formed in the positioning bottom plate at the branching position.

4. The bending contact tube drilling tool according to any one of claims 1 to 3, wherein the drilling module is an L-shaped block, the L-shaped block is connected with the positioning base through the end part of one side of the L-shaped block, and a space between the other side of the L-shaped block and the positioning base forms a workpiece placing space for fixedly placing the bending contact tube.

5. A bending conductive pipe drilling tool according to claim 4, wherein one side of the L-shaped block is provided with a screw connecting hole which extends along the length direction of the side and penetrates through the side, the drill module is fixedly connected to the positioning base through a connecting screw which is arranged in the screw connecting hole in a penetrating mode, and the other side of the L-shaped block is provided with a drill bushing mounting hole which penetrates through the side in the thickness direction.

6. The conductive pipe bending and drilling tool according to claim 2 or 3, wherein the conductive pipe positioning structure comprises a plurality of positioning points, and the positioning points comprise an end positioning point located at one end, far away from the inclined section, of the straight section of the positioning base and more than two side positioning points arranged at intervals along the straight section.

7. A bending conductive tube drilling tool according to claim 6, wherein the positioning base is of a plate-shaped structure, each positioning point comprises a positioning hole arranged on the positioning bottom plate and a positioning pin penetrating into the positioning hole in use, and a side surface of the positioning pin forms a positioning surface.

8. The bending contact tube drilling tool according to any one of claims 1 to 3, further comprising a pressing block for pressing the bending contact tube on the positioning base.

Technical Field

The invention relates to a drilling tool for bending a conductive tube.

Background

The bent conductive tube used on the scissors type isolating switch with the model number of GW46-550 is shown in figures 1 and 2, the bent conductive tube is long in length and comprises a straight line section 1 and an inclined extension section 2, in general, the bent conductive tube is two bent conductive tubes with an axial symmetry structure and is used in pairs, the bent conductive tube axially symmetrical to the bent conductive tube also comprises a straight line section 3 and an inclined extension section 4, in addition, as shown in figure 3, the sections of the bent conductive tube and the bent conductive tube axially symmetrical to the bent conductive tube are both annular, and each bent conductive tube comprises two horizontal sections 5 arranged in parallel at intervals and a bent section 6 connected to the end parts of the two parallel horizontal sections. The conductive tube is required to be drilled, holes in the conductive tube are not all equal-diameter through holes, holes in partial positions are large holes at one end, and non-equal-diameter holes in small holes at the other end of the same circle center position. At present, no drilling tool for the length of the electric conduction tube with the axisymmetric structure exists.

Disclosure of Invention

The invention aims to provide a drilling tool for a bent conductive tube, which aims to solve the problem of drilling for processing an overlong conductive tube with a symmetrical structure in the prior art.

In order to achieve the purpose, the drilling tool for the bent conductive tube adopts the following technical scheme:

the utility model provides a contact tube drilling frock of bending, includes:

the positioning base is provided with a conductive tube positioning structure for positioning the conductive tube;

the drilling module group comprises a first drilling module group and a second drilling module group, wherein the first drilling module group is fixed on the positioning base at the drilling hole position corresponding to the straight section of the conductive pipe, and the second drilling module group is fixed on the positioning base at the drilling hole position corresponding to the bent section of the conductive pipe;

the two second drilling module groups are symmetrically arranged relative to the arrangement axis of the first drilling module group when being fixed on the positioning base;

two groups of drill sleeves which are used for being arranged on the drill module in a replaceable way and are respectively a large-hole drill sleeve used for drilling one side surface of the conductive pipe and a small-hole drill sleeve used for drilling the other side surface of the conductive pipe;

the positioning base is provided with an avoiding space for avoiding the drill bit when drilling is carried out on the side surface, attached to the positioning base, of the conductive tube.

The invention has the beneficial effects that: when drilling a bent conductive pipe, the bent conductive pipe is positioned on a positioning base through a conductive pipe positioning structure, a drill bushing is arranged on one of a first drill module group and a second drill module group, one of the first drill module group and the second drill module group is enabled to correspond to a drilling position of the bent conductive pipe, so that the bent conductive pipe is drilled, when the other axisymmetric bent conductive pipe is to be machined, the axisymmetric bent conductive pipe is positioned on the positioning base through a conductive pipe positioning structure, the drill bushings are arranged on the other drill module group of the first drill module group and the second drill module group, so that the other drill module group of the first drill module group and the second drill module group corresponds to the drilling positions of the axisymmetric bent conductive pipe, so that the axisymmetric bent conductive pipe is drilled, in the invention, the same set of bent conductive pipe drilling tool can be used for respectively positioning and machining the two axisymmetric bent conductive pipes, the application range of the conductive tube bending and drilling tool is enlarged.

Furthermore, the positioning base is of a Y-shaped structure which comprises a straight line section and two inclined extension sections which are connected to one end of the straight line section and symmetrically arranged relative to the straight line section, and the included angle between the straight line section and the inclined extension sections is equal to the bending angle of the bent conductive tube.

Has the advantages that: when the conductive tube bending and drilling tool can process two axisymmetric bent conductive tubes, the structure of the positioning base can be as simple as possible, and the material consumption of the positioning base is saved. .

Furthermore, the positioning base is of a plate-shaped structure, and an accommodating notch for accommodating deformation of the bending position of the bent conductive tube in the thickness direction is formed in the forked position of the positioning base plate.

Has the advantages that: because the thickness of the bending part of the conductive tube is slightly changed after the conductive tube is bent and formed, if the bottom plate of the drilling tool is completely a plane, the conductive tube cannot be stably placed when being fixed on the drilling tool, and the accommodating notch is formed in the positioning bottom plate corresponding to the bending part of the bent conductive tube, so that the accommodating notch can accommodate the deformation of the bent conductive tube, and the bent conductive tube can be stably placed on the positioning bottom plate.

The drilling module is an L-shaped block, the L-shaped block is connected with the positioning base through the end part of one side of the L-shaped block, and the space between the other side of the L-shaped block and the positioning base forms a workpiece placing space for fixedly placing the bent conductive tube.

Has the advantages that: on one hand, the drilling module is an L-shaped block, so that the structure is simple and the processing and manufacturing are convenient; on the other hand, when the drilling module can be fixedly connected to the positioning base, a space for placing the bent conductive tube is formed between the drilling module and the positioning base, and the position between the drilling module and the bent conductive tube is conveniently fixed.

Furthermore, one side of the L-shaped block is provided with a screw connecting hole which extends along the length direction of the side and penetrates through the side, the drill module is fixedly connected to the positioning base through a connecting screw which penetrates through the screw connecting hole, and the other side of the L-shaped block is provided with a drill bushing mounting hole which penetrates through the side in the thickness direction.

Has the advantages that: when conveniently with L-shaped piece fixed mounting on the location base, be provided with the drill bushing mounting hole in the another side of L-shaped piece to when drilling, can install the drill bushing in the drill bushing mounting hole, make things convenient for the drill bushing to fix a position the drill bit.

The conducting tube positioning structure comprises a plurality of positioning points, wherein each positioning point comprises an end positioning point located at one end, far away from the inclined extension section, of the straight line section of the positioning base and more than two lateral positioning points arranged at intervals along the straight line section. Has the advantages that: before the bent conductive tube is installed, all the drill module lines are fixed on the positioning base, and then the bent conductive tube moves from the end of the Y-shaped structure of the positioning base to the straight line section of the positioning base, so that the bent conductive tube and the positioning base are positioned, the drill modules are not needed to be disassembled and assembled when the bent conductive tube is positioned, and the bent conductive tube is guaranteed to have higher machining efficiency.

Furthermore, the positioning base is of a plate-shaped structure, each positioning point comprises a positioning hole arranged on the positioning bottom plate and a positioning pin penetrating through the positioning hole in use, and a positioning surface is formed on the side surface of each positioning pin.

Has the advantages that: the structure of the positioning point of the conductive positioning structure is simple.

The bending conductive tube pressing device further comprises a pressing block used for pressing the bending conductive tube on the positioning base.

Has the advantages that: after the bent conductive tube is well positioned, the bent conductive tube is fixed on the positioning base through the pressing block, and the stability of the bent conductive tube in the drilling process is ensured.

Drawings

FIG. 1 is a schematic structural diagram of a bent conductive tube in the prior art;

FIG. 2 is a schematic diagram of a prior art bent contact tube axially symmetric to the bent contact tube shown in FIG. 1;

FIG. 3 is a cross-sectional view of a prior art bent contact tube;

FIG. 4 is a schematic structural diagram of a drilling tool for bending a conductive tube according to the present invention;

FIG. 5 is a top view of the positioning baseplate of FIG. 4;

FIG. 6 is a partial cross-sectional view of the positioning base of FIG. 5 showing a receiving recess;

FIG. 7 is a front view of the first drill module of FIG. 4;

FIG. 8 is a partial cross-sectional view of a first drill module;

FIG. 9 is a front view of the second drill module of FIG. 4;

FIG. 10 is a partial cross-sectional view of a second drill module;

FIG. 11 is a front view of the third drill module of FIG. 4;

FIG. 12 is a partial cross-sectional view of a third drill module;

fig. 13 is a schematic view of the construction of the drill bushing.

In the figure: 1-straight line segment; 2-inclined extension section; 3-straight line segment; 4-a diagonal section; 5-horizontal segment; 6-bending section; 7-positioning the bottom plate; 8-a first drill module; 9-a second drill module; 10-a third drill module; 11-briquetting; 12-a receiving recess; 13-lateral positioning holes; 14-quick-change drill bushing; 15-avoiding holes; 16-a threaded hole; 17-a first quick-change drill bushing mounting hole; 18-a first fixed drill bushing mounting hole; 19-first screw attachment hole; 20-a first pin hole; 21-a second quick-change drill bushing mounting hole; 22-second screw attachment hole; 23-a second pin hole; 24-a third quick-change drill bushing mounting hole; 25-third screw attachment hole; 26-a third pin hole; 27-a groove; 28-a guide hole; 29-end positioning holes; 30-a fourth drill module; 31-fixing the drill bushing; 32-a first side; 33-a second edge; 34-third side; 35-fourth side; 36-fifth side; 37-sixth side.

Detailed Description

The invention provides a drilling tool for a bent conductive tube, which is used for conveniently drilling the bent conductive tube introduced in the background technology.

The structure of the conductive pipe bending and drilling tool is shown in fig. 4, and comprises a positioning bottom plate 7, a pin hole positioning structure for positioning the bent conductive pipe is arranged on the positioning bottom plate 7, a drilling module group is fixed on the positioning bottom plate 7 at a drilling position corresponding to the bent conductive pipe, the drilling module group comprises a first drilling module group and a second drilling module group which are fixed on the positioning bottom plate 7, wherein the first drilling module group corresponds to the drilling hole position of the straight section of the conductive tube, the second drilling module group corresponds to the drilling hole position of the bent section of the conductive tube, and the two groups of second drilling module groups are symmetrically arranged around the arrangement axis of the first drilling module group when being fixed on the base, the positioning bottom plate 7 is provided with avoidance holes 15, the drill bit can be avoided when the side face of the conductive pipe, which is attached to the positioning bottom plate 7, is drilled, and the drill module is provided with a replaceable drill bushing. When the bent conductive tube is drilled, one group of the first drilling module group and the second drilling module group is used for positioning a drilling hole corresponding to the bent conductive tube, positioning and fixing the bent conductive tube, and then performing driller processing; when the other axisymmetric bent conductive tube is drilled, the other group of the first drilling module group and the second drilling module group is corresponding to the drilling position of the other axisymmetric bent conductive tube, the other axisymmetric bent conductive tube is positioned and fixed, and then the drilling process is carried out; the same set of bending conductive tube drilling tool can be used for drilling two axisymmetric bending conductive tubes respectively.

As shown in fig. 5, the positioning bottom plate 7 is Y-shaped, and includes a straight line segment and two inclined extension segments connected to one end of the straight line segment and symmetrically disposed with respect to the straight line segment, and an included angle between the straight line segment and the inclined extension segment is equal to a bending angle of the bent conductive tube. The positioning bottom plate 7 is provided with a plurality of positioning holes, the positioning bottom plate comprises an end positioning hole 29 which is located at one end of a straight line section of the positioning bottom plate 7, the end positioning hole is far away from an inclined extension section, and two side positioning holes 13 are arranged at intervals along the straight line section, positioning pins penetrate through the positioning holes, and when the bent conductive tube needs to be fixed on the positioning bottom plate 7, the bent conductive tube is positioned by a pin hole positioning structure formed by the positioning holes and the positioning pins. In this embodiment, the pin hole positioning structure is a conductive tube positioning structure.

Pressing blocks 11 are respectively and fixedly arranged on the straight line section and the two inclined extension sections of the positioning bottom plate 7, and the pressing blocks 11 are fixed on the positioning bottom plate 7 through nuts. After the pin hole positioning structure realizes the positioning of the bent conductive tube on the positioning bottom plate 7, the bent conductive tube is tightly pressed on the positioning bottom plate 7 by the pressing block 11, so that the bent conductive tube is fixed.

As shown in fig. 5 and 6, the positioning bottom plate 7 is provided with the accommodating notch 12 at the branch position, and since the thickness of the bent part of the conductive tube is slightly changed after the conductive tube is bent and formed, if the bottom plate of the drilling tool is completely a plane, the conductive tube cannot be stably placed when being fixed on the drilling tool, the deformation part of the bent conductive tube can be accommodated by the accommodating notch 12, and the bent conductive tube can be more stably placed on the positioning bottom plate 7.

The straight line section of the positioning bottom plate 7 is fixedly connected with a first drilling module 8 and a second drilling module 9, the first drilling module 8 and the second drilling module 9 form a first drilling module group, a positioning pin hole of the positioning drilling module is formed in the positioning bottom plate 7 at a drilling hole applying position corresponding to the straight line section of the conductive pipe, and a threaded hole 16 for fixing the drilling module is further formed in the positioning bottom plate 7. The structure of the first drill module 8 is as shown in fig. 7 and 8, the first drill module 8 is an L-shaped block, and includes a first edge 32 and a second edge 33 that are perpendicular to each other, the first edge 32 of the first drill module 8 is provided with a first pin hole 20 corresponding to the positioning pin hole, a cylindrical pin is installed in the first pin hole 20, and the first drill module 8 is positioned on the positioning bottom plate 7 through the pin hole matching. The first side 32 is further provided with a first screw coupling hole 19 extending in the longitudinal direction of the side and penetrating the side, and the first drill module 8 is fixed to the positioning base plate 7 by sequentially passing a coupling screw through the first screw coupling hole 19 of the L-shaped block and threadedly coupling the coupling screw with the screw hole 16 of the positioning base plate 7. The space between the second edge 33 of the first drill module 8 and the positioning bottom plate 7 forms a workpiece placing space for fixedly placing the bent conductive pipe, the second edge 33 is provided with a first quick-change drill bushing mounting hole 17 and a first fixed drill bushing mounting hole 18 which penetrate through the edge in the thickness direction, the diameter of the first quick-change drill bushing mounting hole 17 is larger than that of the first fixed drill bushing mounting hole 18, the first quick-change drill bushing mounting hole 17 is used for fixing the quick-change drill bushing 14, and the second drill bushing mounting hole is used for fixing the fixed drill bushing 31.

The structure of the second drill module 9 is as shown in fig. 9 and 10, the second drill module 9 is also an L-shaped block, and includes a third edge 34 and a fourth edge 35 that are perpendicular to each other, the third edge 34 of the second drill module 9 is further provided with a second pin hole 23 corresponding to the positioning pin hole, a cylindrical pin is installed in the second pin hole 23, and the second drill module 9 is positioned on the positioning bottom plate 7 through the pin hole matching. The third side 34 is further provided with a second screw connection hole 22 extending along the length direction of the side and penetrating the side, and the second drill module 9 is fixed on the positioning bottom plate 7 by sequentially passing through the second screw connection holes 22 on the L-shaped block and being in threaded connection with the threaded hole 16 on the positioning bottom plate 7 by using a connection screw. The space between the fourth side 35 of the second drill module 9 and the positioning bottom plate 7 forms a workpiece placing space for fixedly placing the bent contact tube, the fourth side 35 is provided with a second quick-change drill bushing mounting hole 21 penetrating through the side in the thickness direction, and the second quick-change drill bushing mounting hole 21 is used for mounting the quick-change drill bushing 14.

The third drilling module 10 and the fourth drilling module 30 are fixedly connected to two inclined sections of the positioning bottom plate 7, the third drilling module 10 and the fourth drilling module 30 form a second drilling module group, and the third drilling module 10 and the fourth drilling module 30 are symmetrically arranged about the arrangement axis of the first drilling module group when being fixed on the positioning bottom plate 7 and respectively correspond to drilling hole positions of the inclined sections of the conductive pipe. The third drill module 10 and the fourth drill module 30 have the same structure, and the structure of the third drill module 10 is described by taking the third drill module 10 as an example, as shown in fig. 11 and 12, the third drill module is L-shaped and includes a fifth side 36 and a sixth side 37 perpendicular to each other, a third pin hole 26 corresponding to the positioning pin hole on the positioning bottom plate 7 is formed in the fifth side 36 of the third drill module 10, a cylindrical pin is installed in the third pin hole 26, and the third drill module 10 is positioned on the positioning plate through the pin hole fit. The fifth side 36 is further provided with a third screw connection hole 25 extending in the longitudinal direction of the side and penetrating the side, and the third drill module 10 is fixed to the positioning base plate 7 by passing a connection screw through the third screw connection hole 25 of the L-shaped block in sequence and threadedly engaging with the screw hole 16 of the positioning base plate 7. The sixth side 37 of the third drill module 10 comprises plate segments arranged at intervals, each plate segment is provided with a third quick-change drill bushing mounting hole 24, and the third quick-change drill bushing mounting hole 24 is used for mounting the quick-change drill bushing 14. The fifth edge 36 of the third drill module 10 forms a groove 27 between two adjacent plate sections, the pressing block 11 is arranged at the position of the groove 27 of the fifth edge 36, and the pressing plate surface of the pressing block 11 is pressed in the groove 27, so that the pressing plate surface of the pressing block 11 is prevented from protruding out of the sixth edge 37 of the third drill module 10. In this embodiment, the third drill module 10 forms one of the second set of drill modules, and the fourth drill module 30 forms another of the second set of drill modules.

The structure of the quick-change drill bushing 14 is as shown in fig. 13, a guide hole 28 for a drill to pass through is arranged inside the quick-change drill bushing 14, in this embodiment, two sets of the quick-change drill bushings are arranged, one set of the quick-change drill bushings is used for drilling a large-hole drill bushing on one side surface of a conductive pipe, the other set of the quick-change drill bushings is used for drilling a small-hole drill bushing on the other side surface of the conductive pipe, the two sets of the quick-change drill bushings have the same outer diameter, and the difference is that the guide hole 28 of the quick-change drill bushing 14 has different sizes, and different sizes of.

The first drill module 8, the second drill module 9, the third drill module 10 and the fourth drill module 30 are all L-shaped structures, and after the first drill module 8, the second drill module 9, the third drill module 10 and the fourth drill module 30 are fixed on the positioning bottom plate 7, the directions of the openings of the first drill module 8 and the second drill module 9 are the same, and the directions of the openings of the third drill module 10 and the fourth drill module 10 are opposite.

Before drilling, a bent conductive tube sequentially passes through a third drill module 10, a second drill module 9 and a first drill module 8 from one end of a Y-shaped structure of a positioning bottom plate 7 until a positioning pin in an end positioning hole 29 blocks the end part of a straight line section of the bent conductive tube, which is far away from a bent section, then the position of the bent conductive tube is adjusted, so that the bent conductive tube is tightly attached to the positioning pin, accurate positioning of the bent conductive tube is realized, then the bent conductive tube is fixed by a pressing block 11 on the straight line section and two inclined sections of the bent conductive tube, when an equal-diameter through hole needs to be machined, a fixed drill sleeve 31 is installed in a fixed sleeve installation hole of the drill module, and a drill bit is used for drilling the through hole on the conductive tube; when non-equal diameter through holes need to be processed, the large-diameter quick-change drill bushing 14 is installed on the drill module, a drill bit is used for drilling a hole in one surface of the conductive pipe, after the large hole is completed, the small-diameter quick-change drill bushing 14 is replaced, and the small hole in the back surface of the conductive pipe is drilled. After drilling of one bent conductive tube is completed, the pressing block 11 is detached, the bent conductive tube which is completed in machining is pulled out from the lower portion of each drilling module, then another bent conductive tube which is axisymmetric is replaced, another bent conductive tube which is axisymmetric sequentially penetrates through the fourth drilling module 30, the second drilling module 9 and the first drilling module 8 from one end of the Y-shaped structure of the positioning bottom plate 7, then positioning and fixing of another bent conductive tube which is axisymmetric is completed, and machining of an equal-diameter through hole and a non-equal-diameter through hole of another bent conductive tube which is axisymmetric is performed. The drilling tool for the bent conductive tubes can be used for processing two bent conductive tubes which are used in pairs and have axisymmetric structures, and the positioning rods do not need to be inserted again and the drill modules do not need to be repositioned and fixed when the bent conductive tubes are replaced, so that the processing efficiency is improved.

In this embodiment, the location bottom plate is for containing the straightway and connecting in the one end of straightway, two Y shape structures that prolong the section to one side about the straightway symmetry setting, the contained angle that straightway and the section of prolonging to one side equals with the angle of buckling of the contact tube of buckling, in other embodiments, the location bottom plate includes straightway and the isosceles trapezoid board section that integrative set up, and the shorter upper base of length of isosceles trapezoid board section is close to the straightway, the straightway is kept away from to the longer lower bottom of length of isosceles trapezoid board section, two sets of second jig groups are fixed on the isosceles trapezoid board, and set up about the axis symmetry of arranging of first jig group.

In this embodiment, the positioning bottom plate is provided with an accommodating notch at the branch position for accommodating the deformation of the bent conductive tube in the thickness direction at the bent position; or, the positioning bottom plate is provided with an accommodating through hole at the branch position for accommodating the deformation of the bent conductive tube in the thickness direction.

In the embodiment, the drilling module is an L-shaped block, the L-shaped block is connected with the positioning bottom plate through the end part of one side of the L-shaped block, the space between the other side of the L-shaped block and the positioning bottom plate forms a workpiece placing space for fixedly placing the bent conductive tube, in other embodiments, the drilling module is of a flat-plate-shaped structure, the drilling module and the upper surface of the positioning base for fixedly placing the bent conductive tube form an L-shaped step surface, the flat-plate-shaped drilling module is fixed on a higher step surface, and the bent conductive tube is placed into a lower step surface of the positioning base.

In this embodiment, be equipped with the length direction who follows this limit on one side of L-shaped piece and extend and link up the screw connection hole on this limit, the drill jig piece is through wearing the connecting screw fixed connection in this screw connection hole on the positioning bottom plate, the another side of L-shaped piece is equipped with the drill bushing mounting hole that runs through this limit on thickness direction, in other embodiments, be provided with the holding tank that is used for holding one side of L-shaped piece on the location base, the screw hole of wearing dress top tightening screw is seted up to one side of the edge that is close to positioning bottom plate of holding tank, after inserting the holding tank on one side of L-shaped piece, through top tightening screw with L-shaped piece top tightening.

In this embodiment, the conductive tube positioning structure includes a positioning hole disposed on the positioning base plate and a positioning pin penetrating through the positioning hole during use.

In the embodiment, the positioning holes are multiple, and comprise an end positioning hole at one end of the straight line section of the positioning bottom plate, which is far away from the inclined extension section, and more than two lateral positioning holes which are arranged at intervals along the straight line section; or a plurality of positioning holes are arranged, and the positioning holes comprise end positioning holes positioned at one end of the inclined extension section of the positioning bottom plate, which is far away from the straight line section, and more than two lateral positioning holes arranged at intervals along the straight line section; or the positioning holes are multiple and comprise positioning holes positioned at the end part of one end, far away from the inclined extension section, of the straight line section of the positioning bottom plate, more than two lateral positioning holes arranged at intervals along the straight line section and more than two lateral positioning holes arranged at intervals along the inclined extension section.

In this embodiment, the bending conductive tube pressing device further includes a pressing block for pressing the bending conductive tube onto the positioning bottom plate, and in other embodiments, the pressing block may not be provided, and the bending conductive tube may be pressed onto the positioning bottom plate by hand.

In this embodiment, the positioning base is a positioning bottom plate, in other embodiments, the positioning base may also be a positioning frame, at this time, the conductive tube positioning structure is a positioning block fixed on the positioning frame, the positioning block is L-shaped, one edge of the positioning block is fixed with the positioning frame, and the other edge of the positioning block is used for positioning the bent conductive tube.

In this embodiment, the avoiding space on the positioning base is the avoiding hole on the positioning bottom plate, and in other embodiments, when the positioning base is the positioning frame, the avoiding space is a hollow space on the positioning frame.