Fast flywheel switching structure applied to friction welding machine

Abstract

The utility model discloses a flywheel fast switching structure applied to a friction welding machine. The flywheel fast switching structure comprises a flywheel shaft, a bearing, a switching mechanism and a flywheel. One end of the flywheel shaft is connected with a driving main shaft arranged on the existing friction welding machine; the number of the flywheels is at least two, and the diameters of the two or more flywheels are gradually increased towards the connecting side of the flywheel shaft and the driving main shaft. A shaft rod through hole is formed in the flywheel, a bearing is arranged beside the shaft rod through hole, and the flywheel is coupled to the flywheel shaft through the bearing; switching mechanisms are arranged in the two or more flywheels; the switching mechanism comprises a switching screw rod and a key; a screw rod through hole and an embedded key groove are formed in the flywheel; the switching screw rod and the key are arranged on the normal of the flywheel; one end part of the switching screw rod is in threaded connection with the key; the key can be in key connection with the externally-embedded key groove by screwing the switching screw, and synchronous rotation of the flywheel and the flywheel shaft is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to friction welding machine auxiliary processing tool equipment technical field, concretely relates to a flywheel quick switching structure for being applied to friction welding machine. BACKGROUND

[0002] Friction welding refers to the method that the friction heat generated by the mutual friction between the thermoplastic materials is used to realize welding, friction welding is the heat generated by the relative movement of two workpieces while applying appropriate axial pressure (friction pressure) to friction, which makes the high temperature plastic zone near the contact surface of the workpiece, when its temperature reaches the welding temperature, the relative movement between the workpieces is stopped quickly, and the axial pressure is increased to the top forging pressure at the same time, and appropriate pressure is maintained for a period of time, so that the welded workpieces are firmly connected as a whole.

[0003] When friction welding is carried out, two workpieces are fixed on the friction welding machine respectively, the main shaft of the friction welding machine is connected with the workpieces through the flywheel, the flywheel is an important component in the inertia friction welding machine, which is usually made of high-strength material and has large mass and rotational inertia. The main function of the flywheel is to store and release energy. Before the welding starts, the flywheel is driven by the motor to reach a certain speed, thereby storing a large amount of rotational kinetic energy. During the welding process, the flywheel releases this energy to provide the required friction force and pressure for welding; and the existing flywheel quick switching structure applied to the inertia friction welding machine is difficult to replace the flywheel according to the required welding energy, which greatly reduces the use efficiency of the equipment. SUMMARY

[0004] The application aims to solve the above problems, and provides a flywheel quick switching structure applied to a friction welding machine.

[0005] A flywheel quick switching structure applied to a friction welding machine, which comprises a flywheel shaft, a bearing, a switching mechanism and a flywheel. One end of the flywheel shaft is connected with a driving main shaft provided on an existing friction welding machine. The flywheel is provided with at least two flywheels, and the diameters of the two or more flywheels gradually increase from the side connected with the driving main shaft to the flywheel shaft. The flywheel is provided with an axle through hole, and the axle through hole is provided with a bearing. The flywheel is connected with the flywheel shaft through the bearing. The two or more flywheels are each provided with a switching mechanism.

[0006] The switching mechanism comprises a switching screw and a key. The flywheel is provided with a screw through hole and an embedded key groove. The embedded key groove is arranged on the inner wall of the axle through hole. The screw through hole and the embedded key groove are in communication, and both the screw through hole and the embedded key groove are arranged on the normal line of the flywheel. The flywheel shaft is provided with an external key groove. The external key groove can correspond to the embedded key groove. The switching screw is sleeved in the screw through hole. The key is sleeved in the key groove. One end of the switching screw is threadedly connected with the key. By rotating the switching screw, the external key groove can be connected with the embedded key groove through the key, so that the flywheel and the flywheel shaft can rotate synchronously.

[0007] The two screw through holes and the two embedded key grooves are oppositely arranged, and the axial lines of the two screw through holes and the two embedded key grooves coincide.

[0008] The outer embedded key grooves are arranged in an annular array on the outer diameter of the flywheel shaft.

[0009] The two sides of the shaft through hole are provided with bearing sleeves, and bearings are arranged in the two bearing sleeves; the outer shaft sleeve of the bearing is in interference connection with the inner wall of the bearing sleeve; and the inner shaft sleeve of the bearing is in interference connection with the outer diameter of the flywheel shaft.

[0010] The key is a square head key, and the square head key can be embedded in the outer embedded key groove.

[0011] The key is a round head key, and the round head key can be embedded in the outer embedded key groove.

[0012] The flywheel shaft is a stepped shaft.

[0013] The technical scheme provides a flywheel quick switching structure applied to a friction welding machine, which comprises a flywheel shaft, bearings, a switching mechanism and flywheels.

[0014] The switching mechanism comprises a switching screw and a key; the flywheel is provided with a screw through hole and an embedded key groove; the switching screw and the key are arranged on the normal line of the flywheel; one end of the switching screw is in threaded connection with the key; and screwing the switching screw can make the key in key connection with the outer embedded key groove, so that the flywheel and the flywheel shaft are synchronously rotated. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of a double-shaft-diameter flywheel quick switching structure applied to a friction welding machine according to the utility model;

[0016] Figure 2 is a sectional view of the double-shaft-diameter flywheel quick switching structure applied to the friction welding machine according to the utility model;

[0017] Figure 3 is a schematic view of a switching key and a switching screw structure in the flywheel quick switching structure applied to the friction welding machine according to the utility model;

[0018] Figure 4 is a local enlarged view of the double-shaft-diameter flywheel quick switching structure applied to the friction welding machine according to the utility model;

[0019] Figure 5 is a kind of multi-shaft diameter flywheel quick switching structure schematic diagram applied to friction welding machine of the utility model;

[0020] Figure 6 is a kind of multi-shaft diameter flywheel quick switching structure sectional view applied to friction welding machine of the utility model;

[0021] Figure 7 is a kind of multi-shaft diameter flywheel quick switching structure local enlarged view applied to friction welding machine of the utility model;

[0022] In the drawing: 11, single-shaft diameter flywheel shaft, 111, first outer embedded round head key groove, 112, second outer embedded round head key groove, 12, stepped flywheel shaft, 121, first outer embedded square head key groove, 125, fifth outer embedded square head key groove, 21, first bearing, 22, second bearing, 23, third bearing, 24, fourth bearing, 25, fifth bearing, 26, sixth bearing, 27, seventh bearing, 311, first switching screw rod, 3112, nut, 312, first round head key, 321, second switching screw rod, 322, second round head key, 41, first flywheel disc, 411, first shaft rod through hole, 412, first bearing sleeve opening, 413, first screw rod through hole, 414, first inner embedded round head key groove, 42, second flywheel disc, 423, second screw rod through hole, 424, second inner embedded round head key groove, 43, third flywheel disc, 431, third shaft rod through hole, 432, third bearing sleeve opening, 433, third screw rod through hole, 434, third flywheel inner embedded square head key groove, 44, fourth flywheel disc, 45, fifth flywheel disc, 46, sixth flywheel disc, 47, seventh flywheel disc. DETAILED DESCRIPTION

[0023] The technical solutions will be further described below in conjunction with the drawings of the present technical solutions, and the described embodiments are only a part of the technical solutions, not all the embodiments, and all other embodiments obtained by those skilled in the art without creative labor based on the present technical solutions belong to the protection scope of the utility model.

[0024] Embodiment 1 a kind of double-shaft diameter flywheel quick switching structure applied to friction welding machine

[0025] Referring to Figures 1 to 4 As shown in the drawing, a kind of double-shaft diameter flywheel quick switching structure applied to friction welding machine, it includes: flywheel shaft, bearing, switching mechanism, flywheel;

[0026] The flywheel shaft in the embodiment is single-shaft diameter single-shaft diameter flywheel shaft 11, and one end of single-shaft diameter flywheel shaft 11 is connected with the driving spindle provided on the existing friction welding machine;

[0027] The single-shaft diameter flywheel shaft 11 is provided with two groups of key grooves; the two groups of key grooves on the single-shaft diameter flywheel shaft 11 are respectively a first outer-embedded round head key groove 111 and a second outer-embedded round head key groove 112; the first outer-embedded round head key groove 111 and the second outer-embedded round head key groove 112 are adjacently arranged;

[0028] The structure of the first outer-embedded round head key groove 111 is the same as that of the second outer-embedded round head key groove 112; the first outer-embedded round head key groove 111 and the second outer-embedded round head key groove 112 are both provided with a plurality of outer-embedded round head key grooves; the plurality of first outer-embedded round head key grooves 111 and the plurality of second outer-embedded round head key grooves 112 are both arranged in an annular array on the outer diameter end surface of the single-shaft diameter flywheel shaft 11.

[0029] The bearing in the embodiment comprises: a first bearing 21 and a second bearing 22;

[0030] The switching mechanism is divided into a first switching mechanism and a second switching mechanism;

[0031] The flywheel in the embodiment comprises: a first flywheel disc 41 and a second flywheel disc 42;

[0032] The first bearing 21 and the first switching mechanism in the embodiment are arranged in the first flywheel disc 41; the second bearing 22 and the second switching mechanism are arranged in the second flywheel disc 42.

[0033] The first flywheel disc 41 is provided with a first shaft rod through hole 411, one side of the first shaft rod through hole 411 is provided with a first bearing sleeve opening 412,

[0034] The first shaft rod through hole 411 is connected with the single-shaft diameter flywheel shaft 11 through a very small gap;

[0035] The first bearing 21 is fixed in the first bearing sleeve opening 412; the outer shaft sleeve of the first bearing 21 is connected with the inner wall of the first bearing sleeve opening 412 through interference; the inner shaft sleeve of the first bearing 21 is sleeved on the single-shaft diameter flywheel shaft 11; the inner shaft sleeve of the first bearing 21 is connected with the outer diameter of the single-shaft diameter flywheel shaft 11 through interference; that is, the first flywheel disc 41 is connected with the single-shaft diameter flywheel shaft 11 through the first bearing 21;

[0036] The first flywheel disc 41 is provided with a first screw rod through hole 413 and a first embedded round head key groove 414; the first embedded round head key groove 414 is arranged on the side wall of the first shaft rod through hole 411; the first screw rod through hole 413 is communicated with the first embedded round head key groove 414; the first screw rod through hole 413 and the first embedded round head key groove 414 are arranged on the same normal line of the first flywheel disc 41;

[0037] The first screw through hole 413 and the first embedded round head key groove 414 are both provided with two, and the two first screw through holes 413 and the two first embedded round head key grooves 414 are coaxial; that is, the two first screw through holes 413 and the two first embedded round head key grooves 414 are respectively arranged on the two sides of the first flywheel disc 41; the two oppositely arranged first embedded round head key grooves 414 can correspond to a first embedded round head key groove 111;

[0038] The first switching mechanism comprises a first switching screw 311 and a first round head key 312;

[0039] One end of the first switching screw 311 is provided with a nut 3112, and the first switching screw 311 is sleeved in the first screw through hole 413; the first round head key 312 is sleeved in the first embedded round head key groove 414;

[0040] The first round head key 312 is provided with a first internal thread hole 3121 at the center; the end of the first switching screw 311 is threadedly connected with the first internal thread hole 3121;

[0041] The first embedded round head key groove 414 is connected with the first embedded round head key groove 111 through the first round head key 312.

[0042] The diameter of the second flywheel disc 42 connected with the driving main shaft side of the single-shaft-diameter flywheel shaft 11 is greater than the diameter of the first flywheel disc 41;

[0043] The second flywheel disc 42 is provided with a second shaft through hole 421, and the inner diameter of the second shaft through hole 421 is the same as that of the first shaft through hole 411;

[0044] The second shaft through hole 421 is connected with the single-shaft-diameter flywheel shaft 11 through a small gap;

[0045] One side of the second shaft through hole 421 is provided with a second bearing sleeve opening, and the second bearing 22 is sleeved in the second bearing sleeve opening; the outer shaft sleeve of the second bearing 22 is connected with the inner wall of the second bearing sleeve opening in an interference fit; the inner shaft sleeve of the second bearing 22 is sleeved on the single-shaft-diameter flywheel shaft 11, and the inner shaft sleeve of the second bearing 22 is connected with the outer diameter of the single-shaft-diameter flywheel shaft 11 in an interference fit; that is, the second flywheel disc 42 is connected with the single-shaft-diameter flywheel shaft 11 through the second bearing 22;

[0046] The second flywheel disc 42 is provided with a second screw through hole 423 and a second embedded round head key groove 424; the second embedded round head key groove 424 is arranged on the side wall of the second shaft through hole 421; the second screw through hole 423 is communicated with the second embedded round head key groove 424; the second screw through hole 423 and the second embedded round head key groove 424 are arranged on the same normal line of the second flywheel disc 42;

[0047] The second screw through hole 423 and the second embedded round head key groove 424 are both two, and the two second screw through holes 423 and the two second embedded round head key grooves 424 are respectively arranged on the two sides of the second flywheel disc 42; the two oppositely arranged second embedded round head key grooves 424 can correspond to a second embedded round head key groove 112;

[0048] The second switching mechanism comprises a second switching screw 321 and a second round head key 322;

[0049] The first switching screw 311 and the second switching screw 321 are only different in the length of the shank, and the first round head key 312 and the second round head key 322 are the same in structure; the second switching screw 321 is sleeved in the second screw through hole 423; and the second round head key 322 is sleeved in the second embedded round head key groove 424;

[0050] The second round head key 322 is provided with a second threaded hole, and the end of the second switching screw 321 is threadedly connected with the second threaded hole;

[0051] The second embedded round head key groove 424 is connected with the second embedded round head key groove 112 through the second round head key 322.

[0052] The double-shaft-diameter flywheel quick switching structure comprises a flywheel shaft, a first flywheel disc 41 and a second flywheel disc 42; the first flywheel disc 41 and the second flywheel disc 42 are connected to the flywheel shaft through bearings; the first flywheel disc 41 and the second flywheel disc 42 are both provided with a switching mechanism; and the first flywheel disc 41 and the second flywheel disc 42 can rotate synchronously with the flywheel shaft through the switching mechanism.

[0053] Embodiment 2: a multi-shaft-diameter flywheel quick switching structure applied to a friction welding machine

[0054] Referring to Figures 5 to 7 The multi-shaft-diameter flywheel quick switching structure applied to the friction welding machine comprises a flywheel shaft, a bearing, a switching mechanism and a flywheel.

[0055] The flywheel shaft in the embodiment is a stepped flywheel shaft 12, one end of the stepped flywheel shaft 12 is connected with a driving main shaft provided on an existing friction welding machine;

[0056] The stepped flywheel shaft 12 is provided with five shaft diameter connecting portions, and each shaft diameter connecting portion is provided with a square head key groove, that is, the stepped flywheel shaft 12 is provided with five groups of key grooves; the five groups of key grooves are the same in structure.

[0057] The five groups of key grooves on the stepped flywheel shaft 12 are respectively: a first outer-embedded square head key groove 121, a second outer-embedded square head key groove, a third outer-embedded square head key groove, a fourth outer-embedded square head key groove, and a fifth outer-embedded square head key groove 125.

[0058] Each of the outer-embedded square head key grooves is provided with a plurality of outer-embedded square head key grooves, and the plurality of outer-embedded square head key grooves in each group are arranged in an annular array on the outer diameter end face of the stepped flywheel shaft 12.

[0059] The bearings in the embodiment include: a third bearing 23, a fourth bearing 24, a fifth bearing 25, a sixth bearing 26, and a seventh bearing 27.

[0060] The switching mechanisms in the embodiment are divided into: a third switching mechanism, a fourth switching mechanism, a fifth switching mechanism, a sixth switching mechanism, and a seventh switching mechanism.

[0061] The flywheels in the embodiment include: a third flywheel disc 43, a fourth flywheel disc 44, a fifth flywheel disc 45, a sixth flywheel disc 46, and a seventh flywheel disc 47.

[0062] The third bearing 23 and the third switching mechanism are arranged in the third flywheel disc 43; the fourth bearing 24 and the fourth switching mechanism are arranged in the fourth flywheel disc 44; the fifth bearing 25 and the fifth switching mechanism are arranged in the fifth flywheel disc 45; the sixth bearing 26 and the sixth switching mechanism are arranged in the sixth flywheel disc 46; the seventh bearing 26 and the sixth switching mechanism are arranged in the sixth flywheel disc 46; and the seventh bearing 27 and the seventh switching mechanism are arranged in the seventh flywheel disc 47.

[0063] The diameter of the seventh flywheel disc 47 on the connection side of the stepped flywheel shaft 12 with the driving main shaft is greater than the disc diameter of the sixth flywheel disc 46; the disc diameters of the third flywheel disc 43, the fourth flywheel disc 44, the fifth flywheel disc 45, the sixth flywheel disc 46, and the seventh flywheel disc 47 gradually increase in a stepped manner.

[0064] The third flywheel disc 43 is provided with a third shaft rod through hole 431, and the two sides of the third shaft rod through hole 431 are provided with third bearing sleeve openings 432; one third bearing 23 is arranged in each of the two third bearing sleeve openings 432.

[0065] The third flywheel disc 43 is further provided with a third screw rod through hole 433 and a third flywheel embedded square head key groove 434; the third flywheel embedded square head key groove 434 is arranged on the side wall of the third shaft rod through hole 431; the third screw rod through hole 433 is in communication with the third flywheel embedded square head key groove 434; the third screw rod through hole 433 and the third flywheel embedded square head key groove 434 are arranged on the same normal line of the third flywheel disc 43.

[0066] The third screw through hole 433 and the third flywheel embedded square head key groove 434 are both provided with two, and the axis lines of the two third screw through holes 433 and the two third flywheel embedded square head key grooves 434 coincide; that is, the two third screw through holes 433 and the two third flywheel embedded square head key grooves 434 are respectively arranged on the two sides of the inside of the third flywheel disc 43; the two oppositely arranged third flywheel embedded square head key grooves 434 can correspond to a first outer embedded square head key groove 121;

[0067] The third switching mechanism comprises a third switching screw 331 and a first square head key 332; the third switching screw 331 is sleeved in the third screw through hole 433; the first square head key 332 is sleeved in the third flywheel embedded square head key groove 434; the third switching screw 331 and the first square head key 332 are threadedly connected; and the third flywheel embedded square head key groove 434 is connected with the first outer embedded square head key groove 121 through the first square head key 332 by screwing the third switching screw 331.

[0068] The shaft through holes of the fourth flywheel disc 44, the fifth flywheel disc 45, the sixth flywheel disc 46 and the seventh flywheel disc 47 are sleeved on the stepped flywheel shaft 12;

[0069] The shaft through hole is connected with the stepped flywheel shaft 12 in a very small gap;

[0070] The fourth flywheel disc 44 corresponds to the second outer embedded square head key groove; the fifth flywheel disc 45 corresponds to the third outer embedded square head key groove; the sixth flywheel disc 46 corresponds to the fourth outer embedded square head key groove; and the seventh flywheel disc 47 corresponds to the fifth outer embedded square head key groove 125; that is, the five flywheel discs in the example correspond to a group of outer embedded square head key grooves respectively;

[0071] The fourth flywheel disc 44, the fifth flywheel disc 45, the sixth flywheel disc 46 and the seventh flywheel disc 47 are all provided with shaft through holes; the shaft through holes of the fourth flywheel disc 44, the fifth flywheel disc 45, the sixth flywheel disc 46, the seventh flywheel disc 47 and the third flywheel disc 43 are of the same structure;

[0072] The fourth flywheel disc 44 is provided with fourth bearing sleeve openings on both sides, and a fourth bearing 24 is arranged in each of the two fourth bearing sleeve openings, and the two fourth bearings 24 are sleeved on the stepped flywheel shaft 12; the fifth flywheel disc 45 is provided with fifth bearing sleeve openings on both sides, and a fifth bearing 25 is arranged in each of the two fifth bearing sleeve openings, and the two fifth bearings 25 are sleeved on the stepped flywheel shaft 12; the sixth flywheel disc 46 is provided with sixth bearing sleeve openings on both sides, and a sixth bearing 26 is arranged in each of the two sixth bearing sleeve openings, and the two sixth bearings 23 are sleeved on the stepped flywheel shaft 12; the seventh flywheel disc 47 is provided with seventh bearing sleeve openings on both sides, and a seventh bearing 27 is arranged in each of the two seventh bearing sleeve openings, and the two seventh bearings 27 are sleeved on the stepped flywheel shaft 12.

[0073] The five flywheel discs in the embodiment are all connected to the stepped flywheel shaft 12 through two bearings.

[0074] Working principle:

[0075] In the technical solution, the screwing switching screw rod can move the key between the outer embedded key groove and the inner embedded key groove.

[0076] First, select any one or more flywheels and flywheel shafts, rotate the switching screw rod, and make the key embedded in the inner embedded key groove, so that the flywheel and the flywheel shaft are disconnected; at this time, the flywheel shaft 1 is idling; the key connection between any one or more flywheels and flywheel shafts is disconnected, the key connection is disconnected, and the flywheel shaft 1 is in an idle state or the flywheel is passively rotated on the flywheel shaft.

[0077] When the switching screw rod is rotated to lock the connection between any one or more flywheels and flywheel shafts, select one or more flywheels that need to be synchronously rotated, rotate the switching screw rod, and move the direction of the outer embedded key groove, so that the flywheel and the flywheel shaft are synchronously rotated.

[0078] The rotating switching screw rod can quickly switch the flywheel according to different welding energy, greatly improves the use efficiency of the equipment, and reduces the labor intensity.

[0079] The above is only a preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A flywheel quick change structure for use on a friction welding machine, comprising: Flywheel shaft, bearing, switching mechanism, flywheel; one end of the flywheel shaft is connected with the driving spindle provided on the existing friction welding machine; characterized in that: the flywheel is provided with at least two, and the diameters of the two or more flywheels gradually increase from the side connected with the driving spindle; the flywheel is provided with an axle hole, and a bearing is provided beside the axle hole; the flywheel is connected with the flywheel shaft through the bearing; the switching mechanism is provided in the two or more flywheels; The switching mechanism comprises a switching screw and a key; the flywheel is provided with a screw hole and an embedded key groove; the switching screw and the key are arranged on the normal line of the flywheel; one end of the switching screw is threadedly connected with the key; by rotating the switching screw, the key can be connected with an externally embedded key groove, so that the flywheel shaft and the flywheel are synchronously rotated.

2. The flywheel quick change structure applied to a friction welding machine according to claim 1, characterized in that: The embedded key groove is arranged on the inner wall of the axle hole; the screw hole and the embedded key groove are communicated, and both the screw hole and the embedded key groove are arranged on the normal line of the flywheel.

3. The flywheel quick change structure for a friction welder of claim 2, wherein: Both the screw hole and the embedded key groove are provided with two, and the two screw holes and the two embedded key grooves are oppositely arranged, and the axial lines of the two screw holes and the two embedded key grooves coincide.

4. The flywheel quick change structure for a friction welder of claim 3, wherein: The externally embedded key grooves are provided with a plurality of, and the plurality of externally embedded key grooves are arranged in an annular array on the outer diameter of the flywheel shaft.

5. The flywheel quick change structure for a friction welder of claim 4, wherein: Both sides of the axle hole are provided with bearing sleeves, and bearings are arranged in the bearing sleeves; the outer sleeve of the bearing is connected with the inner wall of the bearing sleeve in interference; the inner sleeve of the bearing is connected with the outer diameter of the flywheel shaft in interference.

6. The flywheel quick change structure for a friction welder of claim 5, wherein: The key is a square head key; the square head key can be embedded in the externally embedded key groove.

7. The flywheel quick change structure for a friction welder of claim 5, wherein: The key is a round head key; the round head key can be embedded in the externally embedded key groove.

8. The flywheel quick change structure for a friction welder of claim 6 or 7, wherein: The flywheel shaft is a stepped shaft.

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