CN220050190U - Quick positioning device for milling machine - Google Patents

Abstract

The utility model discloses a quick positioning device for a milling machine, which comprises a milling machine positioning device body matched with a spoke to be processed, wherein a spoke wind hole is formed in the bottom of the spoke to be processed. According to the utility model, through the fixed box, the four anti-skid rubber blocks, the four guiding pressure-control supporting fixed positioning components, the combined driving component, the second electric push rod and the PLC, the four anti-skid rubber blocks are driven to expand from inside to outside in spoke wind holes, automatic pressure-control supporting fixed positioning of the spoke to be processed is facilitated, the pressure-control supporting is utilized to conveniently and accurately control supporting and fixing pressure, the phenomenon that displacement is caused by non-tightening is prevented, an expanding stroke distance is reserved by expanding and supporting, the spoke-supporting fixed position to be processed is convenient to apply, the application range is improved, and the supporting and positioning height of the spoke to be processed is conveniently adjusted according to personnel with different heights by combining the first electric push rod, the guiding column and the U-shaped support plate, so that the labor-saving effect in taking and placing is improved.

Description

Quick positioning device for milling machine

Technical Field

The utility model relates to the technical field of milling machine positioning equipment, in particular to a rapid positioning device for a milling machine.

Background

The spokes are devices for protecting rims and spokes of wheels of vehicles and are characterized by a pair of circular cover plates, wherein the diameters of the cover plates are close to those of the rims, a hole larger than a rotating shaft of the wheels is formed in the center of each cover plate, an orifice is formed in the part, close to the edge, of each cover plate, an annular wheel plate is arranged at the edge of each cover plate, and the curved surfaces of the wheel plates can be tightly attached to the curved surfaces of the rims; during the spoke processing, a milling machine is needed, and when the spoke is processed by the milling machine, the spoke is needed to be positioned and fixed, so that the processing error caused by displacement during processing is prevented from being scrapped;

for positioning the spoke by utilizing the milling machine during processing, publication number CN205851958U discloses a rapid milling machine wind hole positioning device for positioning the spoke, which comprises a spoke positioning disk arranged on the milling machine and used for positioning the spoke and matched with a spoke mounting hole and a wind hole positioning mechanism arranged on the milling machine and used for further fixing and clamping the spoke and matched with the wind hole; the positioning device adopts the positioning device of the spoke positioning disc and the wind hole positioning mechanism, namely the spoke positioning disc realizes position positioning, and the wind hole positioning mechanism realizes angle positioning, so that the spoke can be accurately and rapidly positioned, thereby improving the machining precision of the milling machine and the machining quality of the spoke.

The quick milling machine wind hole positioning device for spoke positioning disclosed in the above patent realizes spoke positioning in a mode that a set spoke positioning disc is clamped in a spoke wind hole, and the spoke clamping is prevented from rotating by a wind hole positioning die arranged on the side, so that the spoke positioning and fixing work is realized, but the device still has some defects:

1. because the size of the spoke positioning disc is fixed and cannot be adjusted, the spoke positioning disc can only be suitable for positioning the spoke of the wind hole with one specification, so that the application range is limited; 2, because the supporting and positioning height of the spoke is fixed, the spoke can not be well suitable for people with different heights to take and place the spoke in a labor-saving manner; in view of this, we propose a quick positioning device for milling machines to solve the above-mentioned problems.

Disclosure of Invention

The present utility model is directed to a rapid positioning device for a milling machine, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the quick positioning device comprises a milling machine positioning device body matched with a spoke to be processed, wherein a spoke wind hole is formed in the bottom of the spoke to be processed, the milling machine positioning device body comprises a milling machine workpiece support, two guide posts are fixedly connected to the two sides of the top of the milling machine workpiece support, the same U-shaped support plate is sleeved on the four guide posts in a sliding manner, supporting blocks are fixedly connected to the two sides of the top of the U-shaped support plate, the tops of the two supporting blocks are movably contacted with the bottom of the spoke to be processed, and the milling machine workpiece support is used for being installed on a milling machine;

the top of the U-shaped support plate is embedded and fixed with a fixed box with an opening at the bottom, the fixed box is positioned in the spoke wind hole, the bottom of the fixed box is fixedly connected with a U-shaped rod, and the top of the milling machine workpiece support is fixedly provided with a first electric push rod with an extending end fixedly connected with the bottom of the U-shaped rod; the first electric push rod is matched with the U-shaped rod and used for lifting and adjusting the supporting use height of the U-shaped support plate and the fixed box;

the bottom of the U-shaped rod is fixedly provided with a second electric push rod and a PLC controller, the four side inner walls of the fixed box are fixedly connected with guide control compression supporting fixed positioning assemblies, the four guide control compression supporting fixed positioning assemblies extend out of the fixed box and are fixedly connected with anti-slip rubber blocks, the four guide control compression supporting fixed positioning assemblies and the second electric push rod are electrically connected with the PLC controller, the four guide control compression supporting fixed positioning assemblies are used for driving the four anti-slip rubber blocks to control compression supporting fixed positioning of spokes to be processed from inside to outside, and the set anti-slip rubber blocks can be used for preventing spin sliding during supporting and fixing;

the four guide control compression supporting and fixing components are hinged with one joint driving component, the bottom of the joint driving component is fixedly connected with the extending end of the second electric push rod, and the joint driving component is used for synchronously driving the four guide control compression supporting and fixing components to expand outwards or contract inwards.

Preferably, the guiding control compression supporting and fixing assembly comprises two transverse guide rods, the four side inner walls of the fixing box are fixedly connected with the ends of the corresponding two transverse guide rods respectively, the two transverse guide rods positioned on the same side are sleeved with the same movable seat in a sliding manner, springs are fixedly connected between the repulsive sides of the opposite movable seats and the inner walls of the fixing box, pressure sensors are fixedly connected to the repulsive sides of the opposite movable seats, supporting and fixing rods are fixedly connected to the repulsive sides of the opposite two pressure sensors, one ends of the supporting and fixing rods, away from the corresponding movable seats, extend out of the fixing box and are fixedly bonded with the anti-skid rubber blocks, the fixing box is arranged on the four supporting and fixing rods in a sliding manner, and the pressure sensors are electrically connected with the PLC; the horizontal guide rod, remove seat, pressure sensor, spring and the cooperation of propping solid pole that set up utilize the horizontal guide rod to realize corresponding removal seat horizontal direction, can be through four outward expansion removal of four outward expansion of pressure sensor drive four propping solid poles when four removal seats, utilize four outward expansion of four anti-skidding glue pieces of propping solid pole drive to treat processing spoke and prop fixed position, extrusion force when utilizing pressure sensor to detect propping solid is transmitted for the PLC controller, with this convenience utilizes the PLC controller automatic control second electric putter to close when reaching preset pressure value.

Preferably, the combined driving assembly comprises a lifting seat, the bottom of the lifting seat is fixedly connected with the extending end of the second electric push rod, the four sides of the lifting seat are hinged with connecting rods which are obliquely arranged, two opposite connecting rods are symmetrically arranged, and the top ends of the four connecting rods are hinged with one side close to the four movable seats respectively; the lifting seat and the four connecting rods are matched, when the second electric push rod starts to drive the lifting seat to move upwards, the lifting seat drives the four connecting rods to synchronously extrude the four movable seats outwards, the four movable seats are driven to expand outwards to move, the pressure value received by the PLC is matched to reach a preset value to automatically control the second electric push rod to be closed, and the accurate control pressing support fixing position work is realized.

Preferably, two guide grooves are formed in two sides of the bottom of the U-shaped support plate, and the inner walls of the guide grooves are sleeved with the outer sides of the corresponding guide columns in a sliding manner.

Preferably, sliding through holes are formed in the inner walls of the four sides of the fixing box, and the inner walls of the sliding through holes are sleeved with the outer sides of the corresponding supporting and fixing rods in a sliding mode.

Preferably, two guide perforations which are respectively in sliding contact with the outer sides of the corresponding transverse guide rods are formed in the movable seat.

Preferably, four of the stay bars are located in the spoke wind holes.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the rapid positioning device for the milling machine, through the cooperation of the fixed box, the four anti-skid rubber blocks, the four guide control pressure supporting and fixing components, the combined driving component, the second electric push rod and the PLC, after the closing pressure of the second electric push rod is preset and controlled by the PLC according to the supporting and fixing pressure requirement, the four supporting and fixing rods can be driven to expand and move when the second electric push rod is started in the forward direction, so that the four anti-skid rubber blocks are driven to expand and move outwards to carry out supporting and fixing position work, the pressure value can be detected by the pressure sensor when the supporting and fixing are carried out, the second electric push rod is controlled to be automatically closed when the preset value is reached, the effect of rapid control pressure supporting and fixing positioning of spokes to be processed on the inner side is realized, and an expanding and fixing mode is utilized, so that the spoke to be processed and fixing positions of various specifications are convenient to apply in the expanding and fixing mode;

2. this a quick positioner for milling machine, through fixed box, supporting shoe, first electric putter, guide post and the cooperation of U-shaped extension board that set up, can drive fixed box and U-shaped extension board and reciprocate when starting first electric putter, change the support location height of treating the processing spoke to personnel that are applicable to that this can be fine treat processing spoke laborsaving getting and put of different heights.

According to the utility model, through the fixed box, the four anti-skid rubber blocks, the four guiding pressure-control supporting fixed positioning components, the combined driving component, the second electric push rod and the PLC, the four anti-skid rubber blocks are driven to expand from inside to outside in spoke wind holes, automatic pressure-control supporting fixed positioning of the spoke to be processed is facilitated, the pressure-control supporting is utilized to conveniently and accurately control supporting and fixing pressure, the phenomenon that displacement is caused by non-tightening is prevented, an expanding stroke distance is reserved by expanding and supporting, the spoke-supporting fixed position to be processed is convenient to apply, the application range is improved, and the supporting and positioning height of the spoke to be processed is conveniently adjusted according to personnel with different heights by combining the first electric push rod, the guiding column and the U-shaped support plate, so that the labor-saving effect in taking and placing is improved.

Drawings

FIG. 1 is a schematic diagram of a front view of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

fig. 3 is a schematic top view of the fixing box, the stay bar and the anti-slip rubber block connector according to the present utility model.

In the figure: 100. a spoke to be processed; 101. a spoke wind hole; 1. a milling machine workpiece support; 2. u-shaped support plates; 3. a guide post; 4. a fixed box; 5. a U-shaped rod; 6. a first electric push rod; 7. a support block; 8. a transverse guide rod; 9. a movable seat; 10. a spring; 11. a pressure sensor; 12. a bracing and fixing rod; 13. an anti-skid rubber block; 14. a lifting seat; 15. a second electric push rod; 16. a connecting rod; 17. and a PLC controller.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 3, the quick positioning device for a milling machine provided by the embodiment comprises a milling machine positioning device body matched with a spoke 100 to be processed, wherein a spoke wind hole 101 is formed in the bottom of the spoke 100 to be processed, the milling machine positioning device body comprises a milling machine workpiece support 1, two guide posts 3 are fixedly connected to the two sides of the top of the milling machine workpiece support 1, the four guide posts 3 are slidably sleeved with the same U-shaped support plate 2, two guide grooves are formed in the two sides of the bottom of the U-shaped support plate 2, the inner wall of each guide groove is slidably sleeved with the outer sides of the corresponding guide post 3, the effect of vertically slidably guiding the U-shaped support plate 2 is achieved, support blocks 7 are fixedly connected to the two sides of the top of the U-shaped support plate 2, the tops of the two support blocks 7 are movably contacted with the bottom of the spoke 100 to be processed, and the milling machine workpiece support 1 is used for being mounted on a milling machine;

the top of the U-shaped support plate 2 is embedded and fixed with a fixed box 4 with an opening at the bottom, wherein the top of the U-shaped support plate 2 is provided with an embedded hole welded and fixed with the outer side of the fixed box 4, the fixed box 4 is embedded and fixed at the top of the U-shaped support plate 2 through the embedded hole, the fixed box 4 is positioned in a spoke wind hole 101, the bottom of the fixed box 4 is fixedly connected with a U-shaped rod 5, and the top of a milling machine workpiece support 1 is fixedly provided with a first electric push rod 6 with an extending end fixedly connected with the bottom of the U-shaped rod 5; the first electric push rod 6 is matched with the U-shaped rod 5 to adjust the supporting use height of the U-shaped support plate 2 and the fixed box 4 in a lifting manner;

the bottom of the U-shaped rod 5 is fixedly provided with a second electric push rod 15 and a PLC (programmable logic controller) 17, wherein the bottom of the U-shaped rod 5 is provided with a movable perforation for the extending end of the second electric push rod 15 to movably pass through, the four side inner walls of the fixed box 4 are fixedly connected with guiding, pressure-controlling and supporting fixed positioning components, the four guiding, pressure-controlling and supporting fixed positioning components extend out of the fixed box 4 and are fixedly connected with an anti-slip rubber block 13, the four guiding, pressure-controlling and supporting fixed positioning components and the second electric push rod 15 are electrically connected with the PLC 17, the four guiding, pressure-controlling and supporting fixed positioning components are used for driving the four anti-slip rubber blocks 13 to control and support the fixed positions of the spokes 100 to be processed from inside to outside, and the set anti-slip rubber block 13 can play a role in preventing spin-slip during supporting;

the four guiding control compression supporting and fixing components are hinged with one joint driving component, the bottom of the joint driving component is fixedly connected with the extending end of the second electric push rod 15, and the joint driving component is used for synchronously driving the four guiding control compression supporting and fixing components to expand outwards or contract inwards.

Specifically, the guiding control pressure support fixing component comprises two transverse guide rods 8, four side inner walls of a fixing box 4 are fixedly connected with ends of the corresponding two transverse guide rods 8 respectively, one end of each of the two transverse guide rods 8 positioned on the same side is sleeved with one movable seat 9 in a sliding manner, two guiding through holes which are respectively in sliding contact with the outer sides of the corresponding transverse guide rods 8 are formed in each movable seat 9, the effect of transversely sliding and guiding the movable seats 9 is achieved, springs 10 are fixedly connected between the opposite sides of the movable seats 9 and the inner walls of the fixing box 4, pressure sensors 11 are fixedly connected to the opposite sides of the movable seats 9, the opposite sides of the two pressure sensors 11 are detection ends and are fixedly connected with supporting and fixing rods 12, one end of each supporting and fixing rod 12, which is far away from the corresponding movable seat 9, extends out of the fixing box 4 and is fixedly bonded with a sliding-resistant rubber block 13, four supporting and fixing rods 12 are respectively positioned in wind holes 101, the fixing box 4 is sleeved on the four supporting and fixing rods 12 in a sliding manner, the four supporting and the inner walls of the fixing box 4 are respectively provided with through holes, the inner walls which are respectively provided with sliding through holes, and the corresponding supporting rods 12 are electrically connected with the supporting rods 17 in a sliding manner, and the supporting rods are electrically connected with the outer sides of the supporting rods 12 in a sliding manner; the transverse guide rod 8, the movable seat 9, the pressure sensor 11, the spring 10 and the supporting and fixing rod 12 are arranged to be matched, the corresponding movable seat 9 is transversely guided by the transverse guide rod 8, the four supporting and fixing rods 12 can be driven to be expanded and moved outwards by the four pressure sensors 11 when the four movable seats 9 are expanded and moved outwards, the four anti-slip rubber blocks 13 are driven to be expanded and fixed by the four supporting and fixing rods 12 to the spokes 100 to be processed, the extrusion force generated when the supporting and fixing is detected by the pressure sensors 11 and transmitted to the PLC controller 17, so that the second electric push rod 15 is conveniently and automatically controlled to be closed when a preset pressure value is reached, an expansion stroke distance exists in a mode of expanding and fixing outwards, and the rectangular force can be conveniently formed to be suitable for supporting and fixing the spokes 100 to be processed in various specifications.

Further, the combined driving assembly comprises a lifting seat 14, the bottom of the lifting seat 14 is fixedly connected with the extending end of a second electric push rod 15, four sides of the lifting seat 14 are hinged with connecting rods 16 which are obliquely arranged, two opposite connecting rods 16 are symmetrically arranged, and the top ends of the four connecting rods 16 are respectively hinged with one side close to the four movable seats 9; the lifting seat 14 and the four connecting rods 16 are matched, when the second electric push rod 15 starts to drive the lifting seat 14 to move upwards, the lifting seat 14 drives the four connecting rods 16 to synchronously and outwards extrude the four movable seats 9, the four movable seats 9 are driven to outwards expand and move, the mode that the pressure value received by the PLC 17 is matched to reach a preset value to automatically control the second electric push rod 15 to be closed is matched, and the accurate control of the pressing and supporting fixed position work is realized.

The application method of the embodiment is as follows: after the milling machine workpiece support 1 is installed on a milling machine, when the spoke 100 to be processed is positioned and fixed, the spoke 100 to be processed is placed at the top of two supporting blocks 7, at the moment, the fixed box 4 is positioned in a spoke wind hole 101, the closing pressure of the second electric push rod 15 is preset and controlled by a PLC (programmable logic controller) 17 according to the pressure required to be supported and fixed, the second electric push rod 15 is started forward to drive the lifting seat 14 to move upwards, the lifting seat 14 drives the four connecting rods 16 to synchronously and outwards rotate and extrude the four movable seats 9, under the extrusion force, the four movable seats 9 synchronously and outwards expand and move, the movable seats 9 slide on corresponding transverse guide rods 8 and compress springs 10, and when the four movable seats 9 outwards expand and move, the four supporting and fixing rods 12 outwards expand and move through the four pressure sensors 11, the four supporting and fixing rods 12 drive the four anti-skid rubber blocks 13 to outwards expand and move, the four anti-slip rubber blocks 13 are used for supporting, fixing and extruding the inner wall of the spoke air hole 101 outwards to realize the supporting, fixing and positioning of the spoke 100 to be processed, when in a supporting and fixing state, the inner wall of the spoke air hole 101 shields and limits the supporting and fixing rod 12, at the moment, the four moving seats 9 for extruding, expanding and moving are used for extruding the four pressure sensors 11, the pressure sensors 11 detect the extrusion force during supporting and fix and transmit the extrusion force to the PLC controller 17, when the preset closing pressure value is reached, the PLC controller 17 controls the second electric push rod 15 to be automatically closed, the supporting and fixing pressure is detected by matching the outward expansion and fixing and the automatic closing mode when the preset pressure is reached, the effect of quickly and automatically controlling, pressing and fixing and positioning the spoke 100 to be processed is realized, the supporting and fixing pressure is conveniently and accurately controlled automatically by using the pressing and fixing mode, the phenomenon of displacement caused by non-tightening is prevented, and the anti-slip effect during the supporting and fixing by using the four anti-slip rubber blocks 13 can be enhanced, the phenomenon that the spoke 100 to be processed rotates in processing can be effectively avoided, and an expansion stroke distance exists in a mode of matching with expansion supporting and fixing positioning, so that the spoke 100 to be processed of various specifications is convenient and applicable to supporting and fixing positions, and the application range is improved;

when the height of the support for taking and placing the spoke 100 to be machined needs to be adjusted, the first electric push rod 6 is started to drive the U-shaped rod 5 to move upwards or downwards, the U-shaped rod 5 drives the fixed box 4 to move upwards or downwards, the fixed box 4 drives the U-shaped support plate 2 to slide upwards or downwards outside the four guide posts 3, the height of the U-shaped support plate 2 is changed, so that the support height is changed, the support positioning height of the spoke 100 to be machined is conveniently adjusted according to personnel with different heights, and the spoke 100 to be machined can be taken and placed by personnel with different heights in a labor-saving mode;

when the support fixing position state is required to be released after the spoke is used, the second electric push rod 15 is reversely started to drive the lifting seat 14 to move downwards, the lifting seat 14 drives the four connecting rods 16 to rotate downwards to relax the extrusion force on the four movable seats 9, and at the moment, the elastic force of the four springs 10 in the compressed state drives the four movable seats 9 to shrink towards the middle, so that the aim of driving the four support fixing rods 12 to shrink inwards is achieved, the support fixing position state is released, and the spoke 100 to be machined can be taken down and replaced.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. The utility model provides a quick positioner for milling machine, includes with waiting to process spoke (100) matched with milling machine positioner body, the bottom of waiting to process spoke (100) is provided with spoke wind hole (101), its characterized in that: the milling machine positioning device body comprises a milling machine workpiece support (1), two guide posts (3) are fixedly connected to two sides of the top of the milling machine workpiece support (1), the same U-shaped support plate (2) is sleeved on the four guide posts (3) in a sliding mode, supporting blocks (7) are fixedly connected to two sides of the top of the U-shaped support plate (2), and the tops of the two supporting blocks (7) are movably contacted with the bottom of a spoke (100) to be processed;

the top of the U-shaped support plate (2) is embedded and fixed with a fixed box (4) with an opening at the bottom, the fixed box (4) is positioned in a spoke wind hole (101), the bottom of the fixed box (4) is fixedly connected with a U-shaped rod (5), and the top of the milling machine workpiece support (1) is fixedly provided with a first electric push rod (6) with an extending end fixedly connected with the bottom of the U-shaped rod (5);

the bottom of the U-shaped rod (5) is fixedly provided with a second electric push rod (15) and a PLC (programmable logic controller) (17), guide pressure-control support fixing and positioning components are fixedly connected to the inner walls of the four sides of the fixed box (4), the four guide pressure-control support fixing and positioning components extend out of the fixed box (4) and are fixedly connected with an anti-skid rubber block (13), and the four guide pressure-control support fixing and positioning components and the second electric push rod (15) are electrically connected with the PLC (17);

the four guide control compression supporting and fixing components are hinged with one joint driving component, and the bottom of the joint driving component is fixedly connected with the extending end of the second electric push rod (15).

2. A quick positioning device for a milling machine as claimed in claim 1, wherein: the guide control pressure support fixing assembly comprises two transverse guide rods (8), four side inner walls of a fixing box (4) are fixedly connected with ends of the corresponding two transverse guide rods (8) respectively, the two transverse guide rods (8) located on the same side are sleeved with the same movable seat (9) in a sliding mode, springs (10) are fixedly connected between one repulsive side of the opposite movable seat (9) and the inner wall of the fixing box (4), pressure sensors (11) are fixedly connected to one repulsive side of the opposite movable seat (9), supporting fixing rods (12) are fixedly connected to one repulsive side of the opposite two pressure sensors (11), one ends, away from the corresponding movable seat (9), of the supporting fixing rods (12) extend out of the fixing box (4) and are fixedly bonded with anti-slip rubber blocks (13), the fixing box (4) is arranged on the four supporting fixing rods (12) in a sliding mode, and the pressure sensors (11) are electrically connected with a PLC (17).

3. A quick positioning device for a milling machine as claimed in claim 1, wherein: the combined driving assembly comprises a lifting seat (14), the bottom of the lifting seat (14) is fixedly connected with the extending end of a second electric push rod (15), four sides of the lifting seat (14) are hinged with connecting rods (16) which are obliquely arranged, two opposite connecting rods (16) are symmetrically arranged, and the top ends of the four connecting rods (16) are hinged with one side close to the four movable seats (9) respectively.

4. A quick positioning device for a milling machine as claimed in claim 1, wherein: two guide grooves are formed in two sides of the bottom of the U-shaped support plate (2), and the inner walls of the guide grooves are sleeved with the outer sides of the corresponding guide columns (3) in a sliding mode.

5. A quick positioning device for a milling machine according to claim 2, wherein: sliding through holes are formed in the four inner walls of the fixing box (4), and the inner walls of the sliding through holes are sleeved with the outer sides of the corresponding supporting and fixing rods (12) in a sliding mode.

6. A quick positioning device for a milling machine according to claim 2, wherein: two guide perforations which are respectively in sliding contact with the outer sides of the corresponding transverse guide rods (8) are formed in the movable seat (9).

7. A quick positioning device for a milling machine according to claim 2, wherein: the four supporting and fixing rods (12) are all positioned in the spoke wind holes (101).