A deep hole root fillet rolling device

Abstract

The application discloses a deep hole root round corner rolling device and belongs to the field of machining equipment. The deep hole root round corner rolling device comprises a rolling tool body, the rolling tool body is assembled on a boring bar main shaft of a deep hole machine tool, two rolling head pistons are respectively inserted on the two sides of one end of the rolling tool body, one end of the rolling head piston extends out of the inside of the rolling tool body, an R round corner roller is rotationally connected to the end of the rolling head piston extending out of the inside of the rolling tool body, a compression spring is sleeved on the outside of the rolling head piston and located in the inside of the rolling tool body, and two hydraulic oil holes are arranged in the inside of the rolling tool body. The deep hole root round corner rolling device can bear the load during rolling through a hydraulic system, potential damage caused by the impact during chamfering in the inside of the machine tool is reduced, and the chamfering precision of the round corner rolling device during chamfering of the deep hole root is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of machining equipment, more particularly, to a deep hole root fillet rolling device. BACKGROUND

[0002] When machining equipment processes workpieces, it often needs to open round holes on the workpieces. After drilling round holes, the edges of the round holes are chamfered by numerical control chamfering machines to remove burrs or burrs. The root of the deep hole inside is prone to have steps. The existing numerical control chamfering machine is not convenient for chamfering in the deep hole. The existing deep hole is often driven by a boring bar of a numerical control machine tool to mill the uneven part of the deep hole root;

[0003] Through patent retrieval, it is found that the Chinese patent with publication number CN109290602A discloses a numerical control type slide rail side hole chamfering machine. The device includes a base, a fixing mechanism, a positioning device, a chamfering mechanism and a PLC controller. The fixing mechanism is fixedly connected with the base and is used for fixing the slide rail. The positioning device is arranged adjacent to the fixing mechanism and is fixed on the base. The chamfering mechanism is horizontally arranged on the positioning device and is used for chamfering the slide rail. The fixing mechanism, the positioning device and the chamfering mechanism are electrically connected with the PLC controller and are controlled by the PLC controller. The chamfering mechanism includes a drill bit carrier plate, a locking piece, a drill bit motor and a drill bit. The drill bit is detachably connected with the output shaft of the drill bit motor and is commonly arranged on the drill bit carrier plate. The locking piece is threadedly connected with the drill bit carrier plate and is used for fixing the drill bit motor and the drill bit. The drill bit motor is electrically connected with the PLC controller. The drill bit carrier plate is fixedly connected with the positioning device. The horizontal motor and the vertical motor are driven respectively, the positioning device is moved, the chamfering mechanism is quickly positioned to the side hole position of the slide rail to be chamfered, the PLC controller controls the drill bit motor to drive the drill bit to rotate, the drill bit motor is locked on the positioning device by the drill bit carrier plate and the locking piece, the drill bit can drill into the workpiece, and automatic chamfering is realized.

[0004] However, it does not solve the problem that in the process of chamfering the root of the deep hole by the existing chamfering machine, the drill bit motor and the drill bit are locked on the machine tool by the drill bit carrier plate and the locking piece, the drill bit carrier plate is moved by the positioning device, the drill bit motor drives the drill bit to rotate, the root of the deep hole of the workpiece is chamfered, the drill bit bears a large load, the positioning device of the machine tool is inconvenient to unload the load when chamfering, and under the action of friction, potential damage to the inside of the positioning device is caused, which causes the problem of the decrease of chamfering precision caused by the potential damage inside the chamfering machine when chamfering the root of the deep hole. Therefore, we propose a deep hole root fillet rolling device. SUMMARY

[0005] 1. Technical problem to be solved

[0006] In view of the problems in the prior art, the present application aims to provide a deep hole root fillet rolling device which can bear the load during rolling processing through a hydraulic system, reduce potential damage caused by impact during chamfering in the machine tool, and improve the chamfering accuracy of the fillet rolling device during chamfering of the deep hole root.

[0007] 2. Technical solution

[0008] To solve the above problems, the present application adopts the following technical solution.

[0009] A deep hole root fillet rolling device comprises:

[0010] A rolling tool body is assembled on the boring bar spindle of a deep hole machine tool;

[0011] Two rolling head pistons are respectively inserted on both sides of one end of the rolling tool body, and one end of the rolling head piston extends out of the inside of the rolling tool body;

[0012] An R fillet roller is rotationally connected to one end of the rolling head piston extending out of the inside of the rolling tool body;

[0013] A compression spring is sleeved on the outside of the rolling head piston at a position inside the rolling tool body;

[0014] Two hydraulic oil holes are both provided in the inside of the rolling tool body for pushing the rolling head piston, the inside of the hydraulic oil hole is provided with a synchronization mechanism, and one end of the hydraulic oil hole away from the rolling head piston is provided with a hydraulic system.

[0015] Further, the outside of the rolling head piston is also sleeved with a support ring, and a plurality of inner hexagonal cylindrical head screws are threadedly installed on one side of the support ring.

[0016] Further, a connecting shaft is welded to one end of the rolling tool body away from the rolling head piston, and a rolling pin shaft is rotationally installed between the outside of the R fillet roller and one end of the rolling head piston.

[0017] Further, an inner convex hole is provided on the rolling head piston and sleeved with one end of the rolling head piston, one end of the inner hexagonal cylindrical head screw is threadedly connected to the inside of the inner convex hole, two retaining rings are sleeved with one end of the rolling head piston inside the rolling tool body, and a sealing ring is arranged between the two retaining rings.

[0018] Further, the hydraulic system comprises:

[0019] A hydraulic oil passage is arranged in the middle of one end of the rolling tool body and penetrates the connecting shaft, one end of the hydraulic oil passage is communicated with the hydraulic oil hole, and the other end is communicated with one end of the inner convex hole;

[0020] A rotary joint is rotatably arranged at one end of the hydraulic oil passage away from the rolling tool body;

[0021] An oil feeding hose is fixedly connected to the lower end of the rotary joint;

[0022] An outer hydraulic oil pump is fixedly connected to the oil inlet end of the oil feeding hose, and the oil outlet end of the outer hydraulic oil pump is connected to a hydraulic oil source.

[0023] Further, the synchronization mechanism comprises:

[0024] A steel wire is inserted into the hydraulic oil hole, one end of the steel wire extends into the inner convex hole and is fixedly connected to one end of the rolling head piston, and the other end extends into the hydraulic oil passage;

[0025] A sliding cylinder is slidingly arranged in the inner connecting shaft, and the inner wall of the sliding cylinder is welded to one end of the steel wire extending into the hydraulic oil passage;

[0026] A synchronization spring is welded to one end of the sliding cylinder close to the rolling tool body, and the other end is welded to the inner wall of the hydraulic oil passage.

[0027] Further, a sliding groove is arranged in the inner connecting shaft and communicated with the hydraulic oil passage, the inner wall of the sliding groove is slidingly connected to the outer side of the sliding cylinder, two guide rollers are rotatably arranged in the inner rolling head piston, and a wire laying groove is arranged on the outer side of each guide roller, and the wire laying groove is used for guiding the steel wire.

[0028] Further, the heat dissipation mechanism comprises:

[0029] A plurality of thin tubes are circumferentially arranged on the outer side of the connecting shaft, and the air outlet end of the thin tube faces the R-round roller;

[0030] A protection ring is welded to the outer side of the plurality of thin tubes;

[0031] A fan is fixedly connected to one side of the rotary joint away from the connecting shaft, and the air inlet end of the thin tube faces the fan.

[0032] Further, a wind collecting cover is threadedly arranged on the outer side of the connecting shaft, a plurality of air outlet nozzles are circumferentially arranged on one side of the wind collecting cover, and one end of the air outlet nozzle is fixedly connected to the air inlet end of the thin tube.

[0033] Further, the upper end of the fan is fixedly installed with an atomizing nozzle, a cutting oil pipe is fixedly installed at the liquid inlet of the atomizing nozzle, a cutting oil pump is fixedly installed at the end of the cutting oil pipe away from the atomizing nozzle, and a cutting oil tank is fixedly installed at one end of the cutting oil pump.

[0034] 3. Beneficial effects

[0035] Compared with the prior art, the present application has the advantages that:

[0036] (1) When the present application works, the workpiece is clamped on the deep hole machine tool, the rolling tool body is rotated by the boring bar spindle of the deep hole machine tool, and extends into the deep hole of the workpiece, then the rolling head piston is extended out of the rolling tool body by the hydraulic system, and the pumping amount of the hydraulic oil is controlled, so as to adjust the length of the rolling head piston, so that the R corner roller at one end of the rolling head piston is attached to the deep hole root, and rotates with the rolling tool body to perform rolling processing, so as to increase the surface stress of the deep hole root and improve the durability of the product. The R corner of the deep hole root can be rolled by an external hydraulic power source, the load during rolling processing is borne by the hydraulic system, the load is removed when the machine tool is chamfered, potential damage caused by impact during chamfering in the machine tool is reduced, and the chamfering accuracy of the corner rolling device during chamfering of the deep hole root is improved.

[0037] (2) When the rolling head piston of the present application moves, both rolling head pistons pull the steel wires, pull the sliding cylinders to slide in the inside of the connecting shaft, extrude the synchronous springs, support the sliding cylinders by the synchronous springs, so that the sliding cylinders apply the same reaction to the steel wires to balance the traction on the steel wires, and the two steel wires move synchronously, so that the two rolling head pistons are elongated by the same length, which is beneficial to the uniform rolling of the R corner rollers on the two rolling head pistons on the deep hole root.

[0038] (3) When the present application works, air is driven by the fan to convey airflow to the fine tube, the air outlet end of the fine tube blows air into the deep hole to carry away the heat at the contact between the corner rolling device and the deep hole, and discharges the heat to the air, so as to facilitate heat dissipation of the corner rolling device during rolling of the deep hole root, reduce the aging deformation of the corner rolling device caused by friction heat, and the protection ring is embedded in the boring bar spindle, which can protect the fine tube and avoid extrusion of the boring bar spindle on the fine tube. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 It is a front view of the structure of the present application;

[0040] Figure 2 It is a side view of the structure of the present application;

[0041] Figure 3 It is a sectional view of the structure of the present application;

[0042] Figure 4The side view structure schematic diagram of the rolling tool body of the present application;

[0043] Figure 5 The side view structure schematic diagram of the rolling tool body of the present application; Figure 2 The enlarged structure schematic diagram of A in the figure;

[0044] Figure 6 The side view structure schematic diagram of the rolling tool body of the present application; Figure 3 The enlarged structure schematic diagram of B in the figure;

[0045] Figure 7 The side view structure schematic diagram of the rolling tool body of the present application; Figure 3 The enlarged structure schematic diagram of C in the figure;

[0046] Figure 8 The side view structure schematic diagram of the rolling tool body of the present application; Figure 3 The enlarged structure schematic diagram of D in the figure.

[0047] The figure label explanation:

[0048] 1, rolling tool body; 2, rolling head piston; 3, R round roller; 4, compression spring; 5, hydraulic oil hole; 6, inner hexagonal cylindrical head screw; 7, connecting shaft; 8, rolling pin; 9, inner convex hole; 10, check ring; 11, sealing ring; 12, hydraulic oil channel; 13, rotary joint; 14, oil feeding hose; 15, external hydraulic oil pump; 16, steel wire; 17, sliding cylinder; 18, synchronous spring; 19, sliding groove; 20, guide roller; 21, wire feeding groove; 22, thin tube; 23, protection ring; 24, fan; 25, wind collecting cover; 26, air outlet; 27, atomizing nozzle; 28, cutting oil pipe; 29, cutting oil pump; 30, cutting oil tank; 31, support ring. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0050] Embodiment:

[0051] Please refer to Figures 1-8 A deep hole root fillet rolling device, comprising:

[0052] The rolling tool body 1 is assembled on the boring bar spindle of the deep hole machine tool;

[0053] The rolling head piston 2 is inserted into the two sides of one end of the rolling tool body 1, and one end of the rolling head piston 2 extends out of the inside of the rolling tool body 1;

[0054] R round roller 3, R round roller 3 is rotatably connected to the extension end of the rolling head piston 2 inside the rolling tool body 1, R round roller 3 is made of alloy steel material, hardening treatment, extrusion workpiece can keep good rigidity;

[0055] Compression spring 4, compression spring 4 is sleeved on the outside of the rolling head piston 2 located inside the rolling tool body 1;

[0056] Hydraulic oil hole 5, two hydraulic oil holes 5 are arranged inside the rolling tool body 1, which is used to push the rolling head piston 2, the inside of the hydraulic oil hole 5 is provided with a synchronous mechanism, and the end of the hydraulic oil hole 5 away from the rolling head piston 2 is provided with a hydraulic system.

[0057] When the present application works, the workpiece is clamped on the deep hole machine tool, the deep hole on the workpiece is horizontally opposite to the rolling tool body 1, the rolling tool body 1 is driven to rotate by the boring bar spindle of the deep hole machine tool, and is inserted into the deep hole of the workpiece, then the hydraulic system pumps hydraulic oil into the hydraulic oil hole 5, the hydraulic oil flows into the inside of the rolling tool body 1, the rolling head piston 2 extends out of the inside of the rolling tool body 1, the rolling head piston 2 extrudes the compression spring 4, and the pumping amount of the hydraulic oil is controlled, that is, the length of the rolling head piston 2 extending out is adjusted, so that the R round roller 3 at one end of the rolling head piston 2 is attached to the deep hole root, rotates with the rolling tool body 1, and is rolled and processed to increase the surface stress of the deep hole root and improve the product durability. The R round of the deep hole root can be rolled by means of external hydraulic power source, the load during rolling processing is borne by the hydraulic system, the load is removed when the machine tool is chamfered, the potential damage caused by the impact during chamfering in the machine tool is reduced, and the chamfering precision of the round roller rolling device during chamfering of the deep hole root is improved. Conversely, the hydraulic system extracts the hydraulic oil in the hydraulic oil hole 5 in reverse, reduces the hydraulic pump of the rolling head piston 2, pushes the rolling head piston 2 back to the inside of the rolling tool body 1 under the action of the compression spring 4, so that the R round roller 3 is separated from the deep hole root, and the boring bar spindle is separated from the deep hole.

[0058] Referring to Figure 3 and Figure 6 , the outside of the rolling head piston 2 is also sleeved with a supporting ring 31, a plurality of internal hexagonal cylindrical head screws 6 are threadedly installed on one side of the supporting ring 31, the supporting ring 31 is fixed on the rolling tool body 1 through the internal hexagonal cylindrical head screws 6, so that the supporting ring 31 supports the rolling head piston 2 from the side and can support the rolling head piston 2.

[0059] Referring to Figure 1 and Figure 6, the end of the rolling tool body 1 away from the rolling head piston 2 is welded with a connecting shaft 7, one end of the connecting shaft 7 penetrates and is connected to the boring bar spindle of the deep hole machine, the boring bar spindle of the deep hole machine is convenient to stagger the hydraulic system, the outer side of the R round roller 3 and one end of the rolling head piston 2 are rotatably connected through a rolling pin shaft 8 penetrating therebetween, both ends of the rolling pin shaft 8 are rotatably connected to one end of the rolling head piston 2 through bearings, and the outer side of the rolling pin shaft 8 is rotatably connected to the outer side of the R round roller 3 through a bearing, when the rolling tool body 1 is installed, one end of the connecting shaft 7 penetrates and is connected to the boring bar spindle of the deep hole machine, and is locked, the boring bar spindle of the deep hole machine is convenient to drive the connecting shaft 7 and the rolling tool body 1 to rotate, at the same time, the R round roller 3 is supported by the rolling pin shaft 8, so that the R round roller 3 rotates around the rolling pin shaft 8, and the friction between the R round roller 3 and the deep hole root is conveniently relieved.

[0060] Referring to Figure 1 and Figure 6 , the rolling head piston 2 is provided with an inner convex hole 9 sleeved with one end of the rolling head piston 2, one end of the inner hexagonal cylindrical head screw 6 is threadedly connected to the inner side of the inner convex hole 9, and the end of the rolling head piston 2 located inside the rolling tool body 1 is embedded and sleeved with two check rings 10, the check ring 10 is "C" shaped, which is convenient to open and close under the action of external force, and a sealing ring 11 is arranged between the two check rings 10, when the rolling head piston 2 moves, the sealing ring 11 is supported from both sides by the two check rings 10, the sealing ring 11 can block the gap between the rolling head piston 2 and the inner convex hole 9, so as to block the hydraulic oil pumped by the hydraulic system to the inner convex hole 9, so that the hydraulic oil can push the end of the rolling head piston 2 located inside the inner convex hole 9.

[0061] Referring to Figure 1 , Figure 3 and Figure 8 , the hydraulic system comprises:

[0062] a hydraulic oil channel 12, the hydraulic oil channel 12 is arranged in the middle of one end of the rolling tool body 1 and penetrates the connecting shaft 7, one end of the hydraulic oil hole 5 is communicated with one end of the hydraulic oil channel 12, and the other end is communicated with one end of the inner convex hole 9;

[0063] a rotary joint 13, the rotary joint 13 is rotatably installed at one end of the hydraulic oil channel 12 away from the rolling tool body 1;

[0064] an oil feeding hose 14, the oil outlet end of the oil feeding hose 14 is fixedly connected to the lower end of the rotary joint 13, and an electronic flowmeter is assembled on the oil feeding hose 14, which is prior art and not shown in the figure;

[0065] An outer hydraulic oil pump 15, the output end of the outer hydraulic oil pump 15 is fixedly connected to the oil feeding end of the oil feeding hose 14, the oil feeding end of the outer hydraulic oil pump 15 is connected to a hydraulic oil source, and the outer hydraulic oil pump 15 is electrically connected to an external controller.

[0066] In operation, the outer hydraulic oil pump 15 draws the hydraulic oil from the hydraulic oil source and pumps the hydraulic oil into the rotary joint 13 along the oil feeding hose 14, the rotary joint 13 rotates relative to the connecting shaft 7, and at the same time, the hydraulic oil is fed into the hydraulic oil channel 12 to provide power for the rolling head piston 2.

[0067] Referring to Figure 3 and Figure 7 , the synchronization mechanism comprises:

[0068] A steel wire 16 is inserted into the inner part of the hydraulic oil hole 5, one end of the steel wire 16 extends into the inner part of the inner convex hole 9 and is fixedly connected to one end of the rolling head piston 2, and the other end extends into the inner part of the hydraulic oil channel 12;

[0069] A sliding cylinder 17 is slidingly installed in the inner part of the connecting shaft 7, and the inner wall of the sliding cylinder 17 is welded to one end of the steel wire 16 extending into the inner part of the hydraulic oil channel 12;

[0070] A synchronization spring 18 is welded to one end of the sliding cylinder 17 close to the rolling tool body 1, and the other end is welded to the inner wall of the hydraulic oil channel 12.

[0071] When the rolling head piston 2 moves, both rolling head pistons 2 pull the steel wire 16, pull the sliding cylinder 17 to slide in the inner part of the connecting shaft 7, and press the synchronization spring 18, and the sliding cylinder 17 is supported by the synchronization spring 18, so that the sliding cylinder 17 exerts the same reaction on the steel wire 16 to balance the pulling action on the steel wire 16, and the two steel wires 16 move synchronously, so that the two rolling head pistons 2 extend the same length, which is beneficial to the uniform rolling of the R-rounding roller 3 on the two rolling head pistons 2 on the root of the deep hole.

[0072] Referring to Figure 3 and Figure 6 , a sliding groove 19 is formed in the inner part of the connecting shaft 7 and communicates with the hydraulic oil channel 12, the inner wall of the sliding groove 19 is slidingly connected to the outer side of the sliding cylinder 17, and two guide rollers 20 are rotatably installed in the inner part of the rolling head piston 2, and a wire laying groove 21 is formed in the outer side of each of the two guide rollers 20, the wire laying groove 21 is used to guide the steel wire 16, and when the synchronization mechanism works, the two steel wires 16 are respectively clamped in the two wire laying grooves 21, and the two steel wires 16 are respectively supported by the two guide rollers 20 to separate from each other and move independently, which is also beneficial to the suspension of the steel wire 16 in the hydraulic oil hole 5 and the hydraulic oil channel 12 to reduce friction.

[0073] Referring to Figure 1 and Figure 5 , the heat dissipation mechanism comprises:

[0074] A plurality of thin tubes 22 are arranged in a circumferential array on the outside of the connecting shaft 7, and the air outlet ends of the thin tubes 22 are directed towards the R corner roller 3.

[0075] A protective ring 23 is welded on the outside of the plurality of thin tubes 22, and is made of hardened alloy steel and can support the thin tubes 22.

[0076] A fan 24 is fixedly connected to one side of the rotary joint 13 away from the connecting shaft 7, and the air inlet ends of the thin tubes 22 are directed towards the fan 24.

[0077] In operation, the fan 24 drives air to flow towards the thin tubes 22, the air outlet ends of the thin tubes 22 blow air into the deep hole to remove heat from the contact between the corner rolling device and the deep hole, and the air is discharged into the air, facilitating heat dissipation of the corner rolling device when the corner rolling device rolls the root of the deep hole, reducing the aging deformation of the corner rolling device caused by frictional heat, and the protective ring 23 is embedded in the boring bar spindle to protect the thin tubes 22 from being pressed by the boring bar spindle.

[0078] Referring to Figure 1 , Figure 2 and Figure 5 , a wind collecting cover 25 is threadedly mounted on the outside of the connecting shaft 7, a plurality of air outlet nozzles 26 are arranged in a circumferential array on one side of the wind collecting cover 25, one end of the air outlet nozzles 26 is fixedly connected to the air inlet ends of the thin tubes 22 through a joint, and the other end of the air outlet nozzles 26 is welded to one side of the wind collecting cover 25. The wind collecting cover 25 collects air driven by the fan 24 and delivers it to the thin tubes 22 through the air outlet nozzles 26, thereby increasing the air receiving area of the thin tubes 22 and facilitating the collection of more air flow in the thin tubes 22.

[0079] Referring to Figure 3 and Figure 5 , an atomizing nozzle 27 is fixedly mounted on the upper end of the fan 24, a cutting oil pipe 28 is fixedly mounted on the liquid inlet of the atomizing nozzle 27, a cutting oil pump 29 is fixedly mounted on the end of the cutting oil pipe 28 away from the atomizing nozzle 27, and a cutting oil tank 30 is fixedly mounted on one end of the cutting oil pump 29. In operation, the cutting oil pump 29 extracts cutting oil from the cutting oil tank 30 and intermittently pumps it to the atomizing nozzle 27 through the cutting oil pipe 28, the atomizing nozzle 27 sprays mist cutting oil into the wind collecting cover 25 at a specified frequency, the air flow carries the mist cutting oil into the deep hole to the rolling point for lubrication, thereby reducing the friction between the corner rolling device and the deep hole, and the cutting oil is used in small amounts and is uniformly distributed.

[0080] Working principle: when the present application works, the workpiece is clamped on the deep hole machine tool, the deep hole on the workpiece is horizontally opposite to the rolling tool body 1, the rolling tool body 1 is driven to rotate by the boring bar spindle of the deep hole machine tool, and is inserted into the deep hole inside the workpiece, then the hydraulic system pumps hydraulic oil into the hydraulic oil hole 5, the hydraulic oil flows into the inside of the rolling tool body 1, the rolling head piston 2 is extended out of the inside of the rolling tool body 1, the rolling head piston 2 extrudes the compression spring 4, and the pumping amount of the hydraulic oil is controlled, that is, the length of the rolling head piston 2 is adjusted to extend, so that the R corner roller 3 at one end of the rolling head piston 2 is attached to the deep hole root, and rotates with the rolling tool body 1 to carry out rolling processing, so as to increase the surface stress of the deep hole root and improve the product durability, the R corner of the deep hole root can be rolled by means of external hydraulic power source, the load during rolling processing is borne by the hydraulic system, the load is unloaded when the machine tool is chamfered, the potential damage caused by the impact during chamfering in the machine tool is reduced, and the chamfering accuracy of the corner rolling device during chamfering of the deep hole root is improved.

[0081] When the rolling head piston 2 of the present application moves, the two rolling head pistons 2 both pull the steel wire 16, pull the sliding cylinder 17 to slide in the inside of the connecting shaft 7, extrude the synchronous spring 18, support the sliding cylinder 17 through the synchronous spring 18, so that the sliding cylinder 17 applies the same reaction to the steel wire 16 to balance the traction on the steel wire 16, the two steel wires 16 move synchronously, so that the two rolling head pistons 2 extend the same length, which is beneficial to the uniform rolling of the R corner roller 3 on the two rolling head pistons 2 on the deep hole root.

[0082] When the present application works, the fan 24 drives air to convey airflow to the fine tube 22, the air outlet end of the fine tube 22 blows air into the deep hole, carries away the heat at the contact between the corner rolling device and the deep hole, and discharges to the air, so as to facilitate heat dissipation of the corner rolling device during rolling of the deep hole root, reduce the aging deformation of the corner rolling device caused by friction heat, and embed the boring bar spindle with the protection ring 23, which can protect the fine tube 22 and avoid extrusion of the boring bar spindle on the fine tube 22.

[0083] The above is only the preferred specific embodiment of the present application; however, the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical scheme of the present application and the improvement concept within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A deep hole root radius rolling device, characterized by, Include: Rolling tool body (1), the rolling tool body (1) is assembled on the boring bar spindle of deep hole machine tool; Rolling head piston (2), two rolling head pistons (2) are respectively inserted on both sides of one end of the rolling tool body (1), one end of the rolling head piston (2) extends out of the inside of the rolling tool body (1); R round roller (3), the R round roller (3) is rotatably connected to one end of the rolling head piston (2) extending out of the inside of the rolling tool body (1); Compression spring (4), the compression spring (4) is sleeved on the outside of the rolling head piston (2) at the position inside the rolling tool body (1); Hydraulic oil hole (5), two hydraulic oil holes (5) are both provided in the inside of the rolling tool body (1) for pushing the rolling head piston (2), the inside of the hydraulic oil hole (5) is provided with a synchronous mechanism, one end of the hydraulic oil hole (5) is provided with a hydraulic system away from the rolling head piston (2); The outside of the rolling head piston (2) is also sleeved with a support ring (31), a plurality of inner hexagonal cylindrical head screws (6) are threadedly installed on one side of the support ring (31); The end of the rolling tool body (1) away from the rolling head piston (2) is welded with a connecting shaft (7), a rolling pin shaft (8) is rotatably installed between the outside of the R round roller (3) and one end of the rolling head piston (2); The rolling head piston (2) is provided with an inner convex hole (9) sleeved with one end of the rolling head piston (2), one end of the inner hexagonal cylindrical head screw (6) is threadedly connected to the inside of the inner convex hole (9), one end of the rolling head piston (2) inside the rolling tool body (1) is sleeved with two retaining rings (10), a sealing ring (11) is arranged between the two retaining rings (10); The hydraulic system comprises: Hydraulic oil channel (12), the hydraulic oil channel (12) is provided in the middle of one end of the rolling tool body (1) and penetrates the connecting shaft (7), one end of the hydraulic oil hole (5) is communicated with one end of the hydraulic oil channel (12), and the other end is communicated with one end of the inner convex hole (9); Swivel joint (13), the swivel joint (13) is rotatably installed at one end of the hydraulic oil channel (12) away from the rolling tool body (1); Oil feeding hose (14), the oil outlet end of the oil feeding hose (14) is fixedly connected to the lower end of the swivel joint (13); Outer hydraulic oil pump (15), the output end of the outer hydraulic oil pump (15) is fixedly connected to the oil inlet end of the oil feeding hose (14), the oil inlet end of the outer hydraulic oil pump (15) is connected with a hydraulic oil source; The synchronous mechanism comprises: Steel wire (16), the steel wire (16) is inserted into the inside of the hydraulic oil hole (5), one end of the steel wire (16) extends into the inside of the inner convex hole (9) and is fixedly connected to one end of the rolling head piston (2), the other end extends into the inside of the hydraulic oil channel (12); Slide cylinder (17), the slide cylinder (17) is slidably installed in the inside of the connecting shaft (7), the inner wall of the slide cylinder (17) is welded to one end of the steel wire (16) extending into the inside of the hydraulic oil channel (12); Synchronous spring (18), one end of the synchronous spring (18) is welded to the slide cylinder (17) near one end of the rolling tool body (1), and the other end is welded to the inner wall of the hydraulic oil channel (12).

2. The apparatus according to claim 1, wherein: The inside of the connecting shaft (7) is provided with a chute (19) in communication with the hydraulic oil channel (12), the inner wall of the chute (19) is slidingly connected to the outer side of the slide cylinder (17), the inside of the rolling head piston (2) is rotatably installed with two guide rollers (20), the outer side of each of the two guide rollers (20) is provided with a wire releasing groove (21), and the wire releasing groove (21) is used for guiding the steel wire (16).

3. The apparatus of claim 1, wherein: The heat dissipation mechanism comprises: A plurality of thin tubes (22) are arranged in a circumferential array on the outer side of the connecting shaft (7), and the air outlet ends of the thin tubes (22) face the R-round roller (3); A protection ring (23) is welded outside the plurality of thin tubes (22); A fan (24) is fixedly connected to one side of the rotary joint (13) away from the connecting shaft (7), and the air inlet ends of the thin tubes (22) face the fan (24).

4. The apparatus of claim 3, wherein: A wind collecting cover (25) is threadedly installed on the outer side of the connecting shaft (7), a plurality of air outlet nozzles (26) are arranged in a circumferential array on one side of the wind collecting cover (25), and one end of the air outlet nozzle (26) is fixedly connected to the air inlet end of the thin tube (22).

5. The apparatus of claim 3, wherein: An atomizing nozzle (27) is fixedly installed on the upper end of the fan (24), a cutting oil pipe (28) is fixedly installed on the liquid inlet of the atomizing nozzle (27), a cutting oil pump (29) is fixedly installed on the end of the cutting oil pipe (28) away from the atomizing nozzle (27), and a cutting oil tank (30) is fixedly installed on one end of the cutting oil pump (29).

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