Radial drilling machine for machining electric power aluminum shell

Abstract

The invention relates to the technical field of radial drilling machines, in particular to a radial drilling machine for machining an electric aluminum shell, which comprises a stand column part, a rocker arm part capable of rotating around the stand column part and moving up and down, and a spindle box capable of moving along the length direction of the rocker arm part, the feeding outer pipe is controlled to ascend and descend through the spindle box, and the rotating inner shaft is controlled to rotate through the spindle box while synchronously following the lifting movement of the feeding outer pipe. The machining efficiency of the electric power aluminum shell is greatly improved, the position of the drill bit part relative to the electric power aluminum shell is more stable through the arranged center inserting cylinder, and the problem that a radial drilling machine is poor in stability is solved.

Description

Technical Field

[0001] This invention relates to the field of radial drilling machine technology, specifically to a radial drilling machine for machining aluminum housings for electric power systems. Background Technology

[0002] A radial drilling machine is a type of vertical drilling machine characterized by its radial arm, which can rotate around a column and move up and down along the column, while the spindle box can move horizontally on the radial arm. This allows for drilling at different locations on large workpieces such as power aluminum housings without frequent workpiece position adjustments. Power aluminum housings are large aluminum workpieces, and drilling is required on their flanges during production to secure them to external pipes with bolts. However, existing radial drilling machines, due to the large number of holes on the flanges, require repositioning the next hole after each drilling operation, necessitating unlocking, repositioning, and relocking of the radial drilling machine, significantly impacting processing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide a radial drilling machine for machining aluminum casings for electric power systems, thereby solving the problem mentioned in the background art that existing radial drilling machines require repositioning after each drilling operation, resulting in low processing efficiency.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a radial drilling machine for machining electric aluminum housings, comprising a column, a radial arm capable of rotating and lifting around the column, and a spindle box capable of moving along the length of the radial arm. The spindle box is equipped with an outer feed tube and a rotating inner spindle. The outer feed tube is controlled for lifting and lowering via the spindle box, while the rotating inner spindle is simultaneously controlled for rotation via the spindle box, following the lifting and lowering of the outer feed tube. A fixed base is fixedly mounted on the lower part of the outer feed tube, and a drill head is rotatably mounted on the fixed base. Several groups of drill heads are arranged in a circular array around the rotating inner spindle, and the drill heads are rotated by controlling the rotation of the rotating inner spindle. A central insert is fixedly mounted at the lower center of the fixed base. During drilling, the central insert is inserted into the flange connector of the electric aluminum housing, at which point the drill head corresponds to the flange on the flange connector.

[0005] A drill bit gear is coaxially fixedly mounted on the drill head, and a central gear is coaxially fixedly mounted on the inner rotating shaft. The central gear meshes with the drill bit gear, thereby enabling the drill head to rotate when the inner rotating shaft rotates.

[0006] The center insert is fitted with a contact pressure ring, which can slide along the axis of the center insert. The inner surface of the contact pressure ring is provided with an air groove. A corrugated baffle is connected to the upper part of the contact pressure ring. The corrugated baffle is fitted on the outside of the center insert, and the upper end of the corrugated baffle is connected to the lower surface of the fixed base.

[0007] The central insert is equipped with a pulse air supply component, which can pulse air supply between the central insert and the corrugated baffle when the inner shaft rotates.

[0008] The pulse air supply assembly includes a partition ring seat fixedly installed on the inner wall of the central insert and a linkage shaft passing through the partition ring seat. The partition ring seat and the linkage shaft are in sealed contact. The upper end of the linkage shaft is fixedly connected to the rotating inner shaft, and the lower end of the linkage shaft is fixedly provided with a shaft end push cover.

[0009] The shaft end push cover is provided with an inclined push part; a rolling horizontal shaft is provided below the shaft end push cover, and shaft clamping vertical frames are installed at both ends of the rolling horizontal shaft. The rolling horizontal shaft can rotate relative to the shaft clamping vertical frames. A sliding groove seat is also fixedly provided on the inner wall of the central insert. The shaft clamping vertical frames and the sliding groove seat are slidably limited to each other, so that the rolling horizontal shaft and the shaft clamping vertical frames can only move up and down. When the shaft end push cover rotates, the inclined push part can intermittently squeeze the rolling horizontal shaft downward.

[0010] A piston body is fixedly installed at the lower part of the vertical frame of the clamping shaft. The piston body is in airtight contact with the inner wall surface of the central insert. A one-way air valve is embedded in the piston body. The one-way air valve allows the airflow below the piston body to flow only upwards through the one-way air valve.

[0011] An annular wall edge is fixedly provided on the inner wall of the central insert. A support spring is provided between the annular wall edge and the piston body. The support spring applies an upward thrust to the piston body, causing the piston body to tend to move upward.

[0012] An air intake filter membrane is installed on the annular wall eaves to filter the gas entering the central insert.

[0013] An exhaust ring cavity is provided inside the partition ring seat; a bottom groove is provided through the bottom of the exhaust ring cavity; an annular stopper and a stopper spring are provided in the exhaust ring cavity; the stopper spring applies downward pressure to the annular stopper, so that the annular stopper seals and closes the bottom groove of the annular cavity; an exhaust wall hole is provided in the side wall of the central insert; one end of the exhaust wall hole is connected to the exhaust ring cavity, and the other end is connected between the central insert and the corrugated baffle.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The radial drilling machine of this invention can perform collective synchronous drilling on the flange of the electric aluminum housing, avoiding the cumbersome step of adjusting the position after each drilling when rotating the flange, which greatly improves the processing efficiency of the electric aluminum housing. Furthermore, by inserting the central insert into the flange pipe, the position of the drill head relative to the electric aluminum housing is more stable, suppressing the instability problem of the radial drilling machine and improving the processing accuracy.

[0015] 2. By using a combination of contact pressure ring and corrugated baffle, this invention can prevent or reduce the metal dust generated during drilling from entering the contact surface between the central insert and the flange pipe during the downward feeding process of the central insert into the flange pipe, thus avoiding wear and scratches on the contact surface between the central insert and the flange pipe.

[0016] 3. By cooperating with the set pulse air supply component and the bellows baffle, the pulse air supply component can use the operation of the rotating inner shaft to input pulse gas into the bellows baffle, causing resonance on the surface of the bellows baffle. This allows the metal dust splashed during drilling to be shaken off the surface of the bellows baffle, reducing the probability of the bellows baffle being torn by metal dust when it folds and shrinks. In addition, the pulse air jet between the contact pressure ring and the flange contact surface can promptly blow away the drilling dust accumulated on the flange, making it easier to observe and improving the drilling quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 This is a front view of the overall structure of the present invention.

[0019] Figure 3 A schematic diagram of the structure in which the central insert is inserted into the flange connector.

[0020] Figure 4 This is an exploded view of a partial structure of the present invention.

[0021] Figure 5 A three-dimensional half-section diagram of the central insertion tube.

[0022] Figure 6 This is a three-dimensional half-section diagram of the exhaust ring cavity.

[0023] Figure 7 This is a three-dimensional half-section front view of the central insert.

[0024] In the diagram: 1. Column; 2. Rocker arm; 3. Spindle box; 4. Feed tube; 5. Rotating inner shaft; 6. Fixed base; 7. Drill head; 8. Center insert; 701. Drill bit gear; 702. Center gear; 801. Contact pressure ring; 802. Air groove; 803. Corrugated baffle; 804. Separator ring seat; 805. Linkage shaft; 806. Shaft end push cover; 807. Inclined push part; 808. Rolling horizontal shaft; 809. 810. Clamping shaft vertical frame; 811. Slide seat; 812. Piston body; 813. One-way valve; 814. Annular wall edge; 815. Support spring; 816. Inlet filter membrane; 817. Exhaust annular cavity; 818. Annular cavity bottom groove; 819. Annular stop; 820. Stop spring; 821. Outlet wall hole; 101. Load-bearing base; 401. Upper mounting plate; 402. Dustproof side cover; 601. Bolt sleeve; 501. Bearing component. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figures 1 to 7 The present invention includes a column part 1, a rocker arm part 2, and a spindle box 3; as shown Figure 1 As shown, a load-bearing base 101 is fixedly installed at the bottom of the column 1 by bolts. The load-bearing base 101 can support and stabilize the column 1. The rocker arm 2 can rotate and move up and down around the column 1. The spindle box 3 can move along the length of the rocker arm 2. The column 1, rocker arm 2 and spindle box 3 are the same as the radial drilling machine technology in the prior art. The column 1, rocker arm 2 and spindle box 3 will not be described in detail in this invention. The spindle box 3 is provided with a feed outer tube 4 and a rotating inner spindle 5. The feed outer tube 4 is raised and lowered by the spindle box 3. The rotating inner spindle 5 moves up and down synchronously with the feed outer tube 4 and is rotated by the spindle box 3.

[0027] like Figure 3 As shown, the lower end of the feed outer tube 4 is integrally formed with an upper mounting plate 401, and the lower edge of the upper mounting plate 401 is integrally formed with a dustproof side cover 402. The upper mounting plate 401, the dustproof side cover 402 and the fixed base plate 6 cooperate to form a closed disc-shaped cavity to protect the components inside.

[0028] like Figure 4As shown, a bolt cylinder 601 is integrally formed on the upper part of the fixed base 6. Bolts pass through the upper mounting plate 401 and screw into the bolt cylinder 601 to achieve fixed installation between the feed outer tube 4 and the fixed base 6. A drill head 7 is rotatably mounted on the fixed base 6. Several sets of drill heads 7 are arranged in a circumferential array around the rotating inner shaft 5. The drill head 7 is rotated by controlling the rotation of the rotating inner shaft 5. A central insert 8 is fixedly installed at the lower center position of the fixed chassis 6, such as... Figure 3 As shown, the central insert 8 is a cylindrical tubular structure. The upper end of the central insert 8 is closed by the fixed base plate 6, and the lower end of the central insert 8 is open. The lower end of the central insert 8 is chamfered. During drilling, the central insert 8 is inserted into the flange pipe of the electric aluminum shell. At this time, the drill head 7 corresponds to the flange plate on the flange pipe. The drill head 7 feeds directly downwards, and drilling can be performed at the corresponding position of the flange plate.

[0029] A drill bit gear 701 is coaxially fixedly mounted on the drill head 7, and a center gear 702 is coaxially fixedly mounted on the rotating inner shaft 5. The center gear 702 and the drill bit gear 701 mesh with each other, so that the rotating inner shaft 5 can drive the drill head 7 to rotate when it rotates.

[0030] like Figure 7 As shown, bearing components 501 are provided between the rotating inner shaft 5 and the feed outer tube 4, and between the rotating inner shaft 5 and the fixed chassis 6, thereby reducing the rotational friction of the rotating inner shaft 5 and improving its durability.

[0031] A contact pressure ring 801 is fitted around the outside of the central insert 8. The contact pressure ring 801 can slide along the axial direction of the central insert 8. An air groove 802 is formed on the inner surface of the contact pressure ring 801, through which gas passes. Several sets of air grooves 802 are arranged in a circumferential array and are evenly distributed. A corrugated baffle 803 is connected to the upper part of the contact pressure ring 801. The corrugated baffle 803 has elasticity. The corrugated baffle 803 is fitted around the outside of the central insert 8, and the upper end of the corrugated baffle 803 is connected to the lower surface of the fixed base 6. There is a gap between the corrugated baffle 803 and the central insert 8 for gas to pass through.

[0032] The central insert 8 is equipped with a pulse air supply assembly. This assembly can pulse airflow between the central insert 8 and the corrugated baffle 803 when the inner rotating shaft 5 rotates. The pulse air supply assembly includes a partition ring seat 804 fixedly mounted on the inner wall of the central insert 8 and a linkage shaft 805 passing through the partition ring seat 804. The partition ring seat 804 and the linkage shaft 805 are in sealed contact. The upper end of the linkage shaft 805 is fixedly connected to the inner rotating shaft 5. Figure 5As shown, a cylindrical blind hole is provided at the lower end of the rotating inner shaft 5, and the upper end of the linkage shaft 805 is inserted into the blind hole. The linkage shaft 805 and the rotating inner shaft 5 are fixed together by a pin. When the rotating inner shaft 5 rotates, it can drive the linkage shaft 805 to rotate. A shaft end push cover 806 is fixedly provided at the lower end of the linkage shaft 805, and the shaft end push cover 806 is welded and fixed to the linkage shaft 805.

[0033] An inclined pusher 807 is provided on the shaft end pusher cover 806. The shaft end pusher cover 806 and the inclined pusher 807 are integrally formed structures. The inclined pusher 807 is a right-angled triangle shape, such as... Figure 5 As shown, the right right-angled side of the inclined push part 807 is parallel to the axis of the rotating inner shaft 5.

[0034] A rolling horizontal shaft 808 is provided below the shaft end push cover 806. A clamping shaft vertical frame 809 is installed at both ends of the rolling horizontal shaft 808. The rolling horizontal shaft 808 can rotate relative to the clamping shaft vertical frame 809. The rolling of the rolling horizontal shaft 808 can reduce the wear between the rolling horizontal shaft 808 and the inclined push part 807. A sliding groove seat 810 is also fixedly provided on the inner wall of the central insert 8. The clamping shaft vertical frame 809 and the sliding groove seat 810 are in sliding limit cooperation, so that the rolling horizontal shaft 808 and the clamping shaft vertical frame 809 can only move up and down. When the shaft end push cover 806 rotates, the inclined push part 807 can intermittently squeeze the rolling horizontal shaft 808 downward.

[0035] A piston body 811 is fixedly installed at the lower part of the clamping shaft vertical frame 809. The piston body 811 is in airtight contact with the inner wall surface of the central insert 8. A one-way air valve 812 is embedded in the piston body 811. The one-way air valve 812 allows the airflow below the piston body 811 to flow upwards through the one-way air valve 812.

[0036] An annular wall 813 is fixedly provided on the inner wall of the central insert 8. A support spring 814 is provided between the annular wall 813 and the piston body 811. The support spring 814 applies an upward thrust to the piston body 811, so that the piston body 811 has an upward tendency to move.

[0037] An air intake filter membrane 815 is installed on the annular wall eaves 813, and the air entering the central insert 8 is filtered through the air intake filter membrane 815.

[0038] An exhaust ring cavity 816 is provided inside the partition ring seat 804; an annular cavity bottom groove 817 is provided through the bottom of the exhaust ring cavity 816; an annular stopper 818 and a stopper spring 819 are provided in the exhaust ring cavity 816; the stopper spring 819 applies downward pressure to the annular stopper 818, so that the annular stopper 818 blocks and closes the annular cavity bottom groove 817; an exhaust wall hole 820 is provided in the side wall of the central insert 8; one end of the exhaust wall hole 820 is connected to the exhaust ring cavity 816, and the other end is connected between the central insert 8 and the corrugated baffle 803.

[0039] The power aluminum casing is fixed by a clamp. The clamp for the power aluminum casing will not be described in detail in this invention, and the description is omitted in the accompanying drawings. The clamp is adaptively selected according to the shape of the power aluminum casing, as long as it can keep the power aluminum casing stable.

[0040] like Figure 3 As shown, the part inserted at the lower end of the central insert 8 is the flange connector of the power aluminum housing, and the annular part pressed down by the contact ring 801 is the flange on the flange connector. The flange needs to be drilled during the processing of the power aluminum housing.

[0041] By inserting the central insert 8 into the flange connector, the relative position between the drill bit 7 and the electric aluminum housing can be made more stable. During drilling, the spindle box 3 controls the feed outer tube 4 to slowly move downwards for feeding, while the spindle box 3 controls the rotation of the inner shaft 5.

[0042] As the outer feed tube 4 slowly moves downwards, the drill bit 7 moves downwards synchronously. During the rotation of the inner rotating shaft 5, as... Figure 4 As shown, the rotating inner shaft 5 drives the central gear 702 to rotate. The central gear 702, through its cooperation with the drill bit gear 701, drives the drill head 7 to rotate, so that multiple sets of drill heads 7 can simultaneously drill holes in the flange of the electric aluminum housing. In one drilling operation, all the holes on a flange can be processed without frequent position adjustments to the radial drilling machine.

[0043] It is worth noting that the electric aluminum housing targeted by the radial drilling machine of this invention is an aluminum workpiece with low hardness, so a processing method of multiple sets of drill heads 7 drilling simultaneously can be adopted.

[0044] The central insert 8 in this invention, through its positioning and cooperation with the flange connector, can suppress the shaking of the radial drilling machine and improve machining accuracy. However, during the feeding and downward movement of the central insert 8, metal chips generated during drilling will splash into the gap between the contact surfaces of the central insert 8 and the flange connector, which can easily cause scratches between the contact surfaces of the central insert 8 and the flange connector when the central insert 8 moves downward in the subsequent process.

[0045] The present invention uses a corrugated baffle 803 and a contact pressure ring 801 to cover the outside of the central insert 8, such as... Figure 3 and Figure 5 As shown, during the downward feeding process of the central insert 8, the corrugated baffle 803 adaptively and gradually folds and contracts, so that metal chips will not splash into the gap between the contact surfaces of the central insert 8 and the flange pipe.

[0046] like Figure 5 As shown, during the rotation of the inner shaft 5, the linkage shaft 805 can be driven to rotate synchronously, which in turn drives the inclined push part 807 to rotate. The inclined push part 807 intermittently squeezes and pushes the rolling horizontal shaft 808 downward. The inclined push part 807 has a right-angled triangular structure. When the rolling horizontal shaft 808 reaches the right-angled side of the inclined push part 807 along the hypotenuse, the rolling horizontal shaft 808 will move upward quickly under the elastic force of the support spring 814.

[0047] This causes the piston body 811, which moves synchronously with the rolling horizontal axis 808, to be in a state of lifting and lowering motion, moving downward at a uniform speed and bouncing upward rapidly.

[0048] During the downward movement of piston body 811, a negative pressure is created at the top of piston body 811. External gas, filtered through intake filter membrane 815 and then through one-way valve 812, reaches the upper region of piston body 811 to replenish it. During the rapid upward movement of piston body 811, a positive pressure is created at the top of piston body 811. Figure 6 As shown, the positive pressure gas pushes the annular baffle 818 upward and enters the exhaust ring cavity 816, and then is ejected through the outlet wall hole 820 between the corrugated baffle 803 and the central insert 8, so that the outlet wall hole 820 ejects a pulse airflow.

[0049] The pulsed airflow can cause a small-amplitude expansion resonance in the corrugated baffle 803, which allows the metal dust that splashes during drilling to fall off the surface of the corrugated baffle 803, reducing the probability of the corrugated baffle 803 being torn by metal dust when it folds and contracts.

[0050] like Figure 5 As shown, the positive pressure pulse airflow between the corrugated baffle 803 and the central insert 8 will reach the area below the contact pressure ring 801 through the air groove 802. Due to the large contact area between the central insert 8 and the flange pipe, the air resistance is large, so most of the gas is horizontally diffused and sprayed out in all directions through the area below the contact pressure ring 801, which can promptly blow away the drilling dust accumulated on the flange during the drilling process.

[0051] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A radial drilling machine for machining aluminum casings for electric power systems, comprising a column, a radial arm capable of rotating and lifting around the column, and a spindle box capable of moving along the length of the radial arm, characterized in that: The spindle box is equipped with a feed outer tube and a rotating inner shaft. The feed outer tube is raised and lowered through the spindle box, and the rotating inner shaft moves in sync with the feed outer tube while being rotated through the spindle box. A fixed base is fixedly installed at the lower part of the feed tube. A drill head is rotatably mounted on the fixed base. There are several sets of drill heads, which are arranged in a circular array around the rotating inner shaft. The drill head is driven to rotate by rotating the rotating inner shaft. A central insert is fixedly installed at the lower center of the fixed chassis. During drilling, the central insert is inserted into the flange connector of the power aluminum shell, at which point the drill bit corresponds to the flange on the flange connector.

2. The radial drilling machine for machining aluminum casings for electric power systems according to claim 1, characterized in that: A drill bit gear is coaxially fixedly mounted on the drill head, and a central gear is coaxially fixedly mounted on the inner rotating shaft. The central gear meshes with the drill bit gear, thereby enabling the drill head to rotate when the inner rotating shaft rotates.

3. The radial drilling machine for machining aluminum casings for electric power systems according to claim 1, characterized in that: The outer side of the central insert is fitted with a contact pressure ring, which can slide along the axial direction of the central insert. The inner surface of the contact pressure ring is provided with an air groove, and a corrugated baffle is connected to the upper part of the contact pressure ring. The corrugated baffle is sleeved on the outside of the central insert, and the upper end of the corrugated baffle is connected to the lower surface of the fixed chassis.

4. The radial drilling machine for machining aluminum casings for electric power systems according to claim 3, characterized in that: The central insert is equipped with a pulse air supply component, which can pulse air supply between the central insert and the corrugated baffle when the inner shaft rotates.

5. The radial drilling machine for machining aluminum casings for electric power systems according to claim 4, characterized in that: The pulse air supply assembly includes a partition ring seat fixedly installed on the inner wall of the central insert and a linkage shaft passing through the partition ring seat. The partition ring seat and the linkage shaft are in sealed contact. The upper end of the linkage shaft is fixedly connected to the rotating inner shaft, and the lower end of the linkage shaft is fixedly provided with a shaft end push cover.

6. The radial drilling machine for machining aluminum casings for electric power systems according to claim 5, characterized in that: An inclined pusher is provided on the shaft end pusher cover; A rolling horizontal shaft is provided below the shaft end push cover. A clamping shaft vertical frame is installed at both ends of the rolling horizontal shaft. The rolling horizontal shaft can rotate relative to the clamping shaft vertical frame. A sliding groove seat is also fixedly provided on the inner wall of the central insert. The clamping shaft vertical frame and the sliding groove seat are slidably limited to each other, so that the rolling horizontal shaft and the clamping shaft vertical frame can only move up and down. When the shaft end push cover rotates, the inclined push part can intermittently squeeze the rolling cross shaft downward.

7. The radial drilling machine for machining aluminum casings for electric power systems according to claim 6, characterized in that: A piston body is fixedly installed at the lower part of the vertical frame of the clamping shaft. The piston body is in airtight contact with the inner wall surface of the central insert. A one-way air valve is embedded in the piston body. The one-way air valve allows the airflow below the piston body to flow only upwards through the one-way air valve.

8. The radial drilling machine for machining aluminum casings for electric power systems according to claim 7, characterized in that: An annular wall edge is fixedly provided on the inner wall of the central insert. A support spring is provided between the annular wall edge and the piston body. The support spring applies an upward thrust to the piston body, causing the piston body to tend to move upward.

9. The radial drilling machine for machining aluminum casings for electric power systems according to claim 8, characterized in that: An air intake filter membrane is installed on the annular wall eaves to filter the gas entering the central insert.

10. The radial drilling machine for machining aluminum casings for electric power systems according to claim 8, characterized in that: The interior of the partition ring seat is provided with an exhaust ring cavity; The bottom of the exhaust ring cavity is provided with a bottom groove, and an annular stopper and a stopper spring are provided in the exhaust ring cavity. The stopper spring applies downward pressure to the annular stopper, so that the annular stopper seals and closes the bottom groove of the ring cavity. An air outlet hole is provided in the side wall of the central insert. One end of the air outlet hole is connected to the exhaust ring cavity, and the other end is connected between the central insert and the corrugated baffle.

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