CN103630354B - Punching machine punching press clutch-brake testing table - Google Patents
Punching machine punching press clutch-brake testing table Download PDFInfo
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- CN103630354B CN103630354B CN201310682192.4A CN201310682192A CN103630354B CN 103630354 B CN103630354 B CN 103630354B CN 201310682192 A CN201310682192 A CN 201310682192A CN 103630354 B CN103630354 B CN 103630354B
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Abstract
A kind of punching machine punching press clutch-brake testing table, it comprises integral-rack and is arranged at the transmission shaft of pivotable on integral-rack, it is characterized in that transmission shaft right-hand member is provided with initiatively large flywheel by rolling bearing, also be provided with the active large flywheel driving mechanism corresponding to initiatively large flywheel, be provided with in the right side of transmission shaft and exchange axle mounting hole, exchange axle left end is inserted into and exchanges in axle mounting hole and form cooperation; Exchange axle arranges the first clutch-brake; At the second clutch-brake that transmission shaft left part is arranged; Position transmission shaft is positioned on the left of the second cylinder is set with vent disc, vent disc is fixed together by screw and the second cylinder and the second master, vent disc is provided with air flue, air flue one end is communicated with the second cylinder, the air flue other end is corresponding with the air hole being arranged at transmission shaft left part, annular air inlet duct both sides are provided with O-ring seal, and the air hole of transmission shaft left part is communicated with the first pneumatic fitting.
Description
Technical field
This programme relates to a kind of testing table, particularly relates to a kind of mechanical press clutch-brake testing table.
Background technology
In prior art, mechanical press clutch-brake is the core functional components (a large amount of employing combined pneumatic structure) controlling punching machine work, the clutch part of clutch-brake in conjunction with time, the secondary part of punching machine is driven motion, and punching machine carries out press work; The clutch part of clutch-brake is thrown off, brake portion in conjunction with time punching machine secondary part be braked, punching machine stops press work.Can the Performance And Reliability of clutch-brake not only have influence on punching machine and normally work, and also directly has influence on the personal safety of operator.Be very important so development mechanical press clutch-brake testing table carries out test to the relevant performance of clutch-brake and reliability.But owing to being difficult to practical work process and the work characteristics of simulating clutch-brake, therefore clutch-brake testing table difficulty is designed very large, domestic clutch-brake testing table when also not having an analog mechanical pressing machine punching press operating mode, cannot carry out experimental test to punching machine relevant Performance And Reliability of clutch-brake under punching press operating mode at present.If carry out experimental test to clutch-brake on pressing machine, have the following disadvantages: 1) because of by structural limitations, without space mounting torque sensor on transmission shaft, clutch torque and braking torque cannot be measured.2) punching machine is production equipment, and it is very inconvenient that the pressing machine using enterprise at present carries out test to clutch-brake.3) cost of pressing machine is higher than testing table a lot, and can only test the clutch-brake of dimension on a kind of pressing machine of specification.
Summary of the invention
This programme proposes a kind of mechanical press clutch-brake testing table for the deficiencies in the prior art, its energy
The duty of clutch-brake (combined pneumatic clutch-brake) when analog mechanical pressing machine carries out press work under single stroke job specification, the reliability of test clutch-brake work.Clutch torque, braking torque, drag angle and braking time can be directly tested in simulation test.It is 800,000 wild marjoram 2,000 thousand Ns (the punching machine market use amount of this nominal pressure scope is maximum) punching machine clutch-brake used that this programme can also realize at a rig-testing test nominal pressure, and test clutch torque scope is from 3000 Ns of rice ~ 15000 N rice, braking torque from 900 Ns of rice ~ 6200 N rice.As increased by this conceptual design principle or reducing test platform structure, the combined pneumatic clutch-brake of greater or lesser specification can also be tested.
The technical measures that this programme is taked are: a kind of punching machine punching press clutch-brake testing table, it comprises integral-rack and is arranged at the transmission shaft of pivotable on integral-rack, it is characterized in that transmission shaft right-hand member is provided with initiatively large flywheel by rolling bearing, also be provided with the active large flywheel driving mechanism corresponding to initiatively large flywheel, be provided with in the right side of transmission shaft and exchange axle mounting hole, exchanging axle mounting hole is 8: 1 circular cone axis holes, exchange on axle mounting hole and be provided with keyway, exchange axle left part be 8: 1 a truncated cone-shaped of cutting be inserted into and exchange in axle mounting hole and form cooperation, exchange on axle and be also provided with the key coordinated with keyway, key is made into integration with exchange axle, and use screw axial to be connected and fixed between transmission shaft end surface, exchange axle right-hand member and be arranged on exchange bracing strut by bearing, exchange bracing strut is by register pin and be bolted on integral-rack, exchange axle arranges the first clutch-brake, and the first clutch-brake comprises the first master, the first cylinder, first piston, first clutch friction dish, the first web joint and the second web joint, the first bearing pin and the second bearing pin, also comprise the first brake disc, 3rd web joint and the 4th web joint, the 3rd bearing pin and the 4th bearing pin, the first groups of springs, first brake press plate, the first coupling assembling, first master is fixedly connected with transmission shaft by expansion sleeve assembly (purchasing parts, model Z5), first cylinder is fixed on transmission shaft, and first piston is arranged in the first cylinder, first clutch friction dish is fixedly connected with the first web joint one end with the second web joint respectively, the other end of the first web joint and the second web joint is arranged on respectively by the first bearing pin and the second bearing pin and initiatively large flywheel moves together with initiatively large flywheel, and the first web joint and the second web joint move axially respectively on the first bearing pin and the second bearing pin, first clutch friction dish is between the first master and first piston, first brake disc is fixedly connected with the 3rd web joint one end with the 4th web joint respectively, the other end of the 3rd web joint and the 4th web joint is arranged on integral-rack respectively by the 3rd bearing pin and the 4th bearing pin, and the 3rd web joint and the 4th web joint move axially respectively on the 3rd bearing pin and the 4th bearing pin.
First groups of springs is arranged between first piston and the first master, first brake press plate to be arranged on the right side of the first master and to move left and right on the first master, first brake disc is between the first brake press plate and the first master, and the first brake press plate is fixedly connected with first piston by the first coupling assembling, the second clutch-brake arranged at transmission shaft left part comprises the second master, second cylinder, the second piston, the second clutch friction dish, 5th web joint and the 6th web joint, 5th bearing pin and the 6th bearing pin, also comprise the second brake disc, the 7th web joint and the 8th web joint, 7th bearing pin and the 8th bearing pin, second groups of springs, the second brake press plate, the second coupling assembling, second master is arranged on transmission shaft by rolling bearing, and the right-hand member of the second master is fixedly connected with the left end of combined cover by screw, and combined cover right-hand member is fixed on the left end of driven large flywheel by screw, combined cover to be sleeved on transmission shaft and with transmission shaft clearance fit, second cylinder is sleeved on transmission shaft by rolling bearing, second piston is arranged in the second cylinder, second clutch friction dish is fixedly connected with the 5th web joint one end with the 6th web joint respectively, the other end of the 5th web joint and the 6th web joint is arranged on the two ends up and down of link respectively by the 5th bearing pin and the 6th bearing pin, the middle part of link is fixedly connected with terminal pad, 5th web joint and the 6th web joint move axially respectively and make the second clutch friction dish between the second cylinder and the second master realize the clutch with the second master on the 5th bearing pin and the 6th bearing pin, terminal pad is fixedly connected with transmission shaft by flat key, second brake disc is fixedly connected with the 7th web joint one end with the 8th web joint respectively, the other end of the 7th web joint and the 8th web joint is arranged on the first Brake Block and the second Brake Block respectively by the 7th bearing pin, the 8th bearing pin, and the first Brake Block and the second Brake Block are fixed on integral-rack, second groups of springs is arranged between the second piston and the second master, and the second brake press plate is arranged on upper on the right side of the second master and moves left and right on the second master, and the second brake press plate is fixedly connected with the second piston by the second coupling assembling, second brake disc is between the second brake press plate and the second master master, position transmission shaft is positioned on the left of the second cylinder is set with vent disc, vent disc is fixed together by screw and the second cylinder and the second master, vent disc is provided with air flue, air flue one end is communicated with the second cylinder, the air flue other end is opened on the internal circular surfaces of vent disc, the internal circular surfaces of vent disc is provided with the annular air inlet duct through airway open, annular air inlet duct is corresponding with the air hole being arranged at transmission shaft left part, annular air inlet duct both sides are provided with O-ring seal, and the air hole of transmission shaft left part is communicated with the second pneumatic fitting.Have certain interval between vent disc inner circle and transmission shaft cylindrical, air inlet disk inner circle has annular air inlet duct, there is seal groove annular air inlet duct both sides, realize motive seal for installing O-ring seal.
The concrete feature of this programme also has, and is fixedly installed small flywheel in the middle part of transmission shaft, and small flywheel is made up of upper and lower two parts and is bolted on together.Because of the heavier-weight of initiatively large flywheel and driven large flywheel, the size of transmission shaft two bearings support zone is greater than middle part size, for small flywheel can be arranged on transmission shaft middle part, small flywheel is made up of upper and lower two parts, after upper and lower two parts are arranged on transmission shaft middle part respectively, by bolt, small flywheel is fixedly connected as an entirety.
Small flywheel is bolted and installs moment of inertia trimmer, the size that small flywheel rotates moment of inertia adjusts by increase and decrease moment of inertia trimmer, and the moment of inertia value adjusted is determined according to the braking torque of required test.
Moment of inertia adjustment block fixed by driven large flywheel, and the size of the moment of inertia of driven large flywheel adjusts by changing moment of inertia adjustment block, and the moment of inertia value adjusted is determined according to the clutch torque of required test.Because adjustment block needs often to change, for ease of dismounting, adjustment block is screwed in the driven large flywheel left and right sides respectively, every sides etc. divide 4 pieces, totally 8 pieces, each block adjustment block is concave shape, is sleeved on the radial degree of freedom of driven large flywheel rim restriction adjustment block, screw be parallel to driven large flywheel shaft to direction adjustment block and driven large flywheel are fixed together.
Integral-rack is integral solder structure.As shown in Figure 2, bracing strut is exchanged by register pin and be bolted on integral-rack.
At transmission shaft left end, a set of synchronous belt transmission device is also housed: driving pulley is fixed on transmission shaft by flat key, driven pulley is fixed on driven belt wheel shaft by flat key, driven belt wheel shaft is arranged in the rolling bearing on integral-rack, can rotate in rolling bearing, two synchronous pulleys are rotated by Timing Belt or stop together with transmission shaft, and driven belt wheel shaft is provided with brake performance tester; Brake performance tester (for purchasing instrument, model is this instrument: SBM-1) being connected with driven belt wheel shaft, just can detecting the braking ability (drag angle and braking time) of underproof clutch-brake.
By the function of the above visible underproof clutch-brake be: after brake portion disengagement, clutch part combine, the large flywheel of active rotated drives transmission shaft (and together with the part be fixedly connected with transmission shaft) to rotate, after the disengagement of clutch part, brake portion combine, transmission shaft (and together with the part be fixedly connected with transmission shaft) is braked, and the large flywheel of the active of rotating continues idle running.Above action can be realized and depend on following structure: the first master is fixedly connected with transmission shaft by expansion sleeve assembly, first clutch friction dish is connected with the large flywheel of two bearing pins and active by two web joints, and the first brake disc is connected with integral-rack with two bearing pins by two web joints.
The function of the intrinsic clutch-brake of testing table is: after brake portion disengagement, clutch part knot, the transmission shaft rotated drives driven large flywheel to rotate together, after the disengagement of clutch part, brake portion combine, driven large flywheel is braked, and transmission shaft can be rotated further, above action can be realized and depend on following structure: the second master can be relatively rotated with transmission shaft by rolling bearing, one end of second master is fixedly connected with one end of combined cover by screw, and the other end of combined cover is fixedly connected with driven large flywheel by screw.Second clutch friction dish is connected with link with two bearing pins by two web joints, link is fixedly connected with terminal pad by bolt, terminal pad is fixedly connected with transmission shaft by flat key, and the second brake disc is connected with integral-rack with two bearing pins by two web joints.
The beneficial effect of this programme is: 1. the testing table of this programme can the duty of analog mechanical pressing machine combined type clutch-brake when single stroke job specification carries out nominal pressure punching press, in rig-testing, the test mechanical pressing machine performance index such as the reliability of combined pneumatic clutch coupling, solve the difficult problem without analog mechanical pressing machine combined type clutch-brake actual condition testing table.
2. can test on a testing table, (the standard form pressing machine within the scope of this nominal pressure has 5 kinds more than 800,000 wild marjoram, 2,000 thousand Ns of 5 kinds of specifications to test clutch-brake nominal pressure, add that the words specification of non-standard punching machine is more) combined pneumatic clutch-brake, improve the usable range of testing table, greatly reduce the material cost of testing table, manufacturing cost.
3. this kind of testing table can the duty of analog mechanical pressing machine combined pneumatic clutch-brake when single stroke job specification carries out press work, to axial load forces be born unlike punching machine bearing when punching press again, thus the serviceable life of testing table is improved greatly.
test, test
Minimum, maximum specification mechanical press clutch-brake can test on testing table: underproof clutch-brake is arranged on and exchanges on axle, and large flywheel, integral-rack are connected respectively with initiatively by web joint; Torque sensor is arranged on transmission shaft, brake performance tester is arranged on driven belt wheel shaft.
1. simulation nominal pressure is operating mode when carrying out nominal pressure punching press under 800,000 Ns of punching machine single stroke job specifications: the clutch torque value of design punching machine is 3570 Ns of rice, brake torque value is 1100 Ns of rice, and the rotating speed of the large flywheel of punching machine is 320 revs/min.When rig-testing, by the speed setting to 320 rev/min of large for testing table active flywheel, the moment of inertia of driven large flywheel is adjusted to 68 kilogram-meters
2, be braked partial turn inertia and be adjusted to 6.3 kilogram-meters
2, the clutch torque measured with this understanding is 3570 Ns of rice, braking torque is 1100 Ns of rice.
2. simulation nominal pressure is operating mode when carrying out nominal pressure punching press under 2,000 thousand Ns of punching machine single stroke job specifications: the clutch torque value of design punching machine is 14000 Ns of rice, brake torque value is 2520 Ns of rice, and the rotating speed of the large flywheel of punching machine is 240 revs/min.When rig-testing, by the adjustment of rotational speed to 240 rev/min of large for testing table active flywheel, the moment of inertia of driven large flywheel is adjusted to 330 kilogram-meters
2, be braked partial turn inertia and be adjusted to 13 kilogram-meters
2, the clutch torque measured with this understanding is 14000 Ns of rice, braking torque is 2520 Ns of rice.
3. brake performance tester can detect by the drag angle of test clutch-brake and braking time.
4., in test bench running test, can measure by the temperature of test clutch-brake friction disc with portable infrared temperature measurer at any time.
Accompanying drawing explanation
Fig. 1 is clutch-brake testing table front view (in figure, two clutch-brakes are overall echelon sectional view); Fig. 2 is the K direction view of Fig. 1; Fig. 3 exchanges axle and transmission shaft coupling part cut-open view (in Fig. 1, A-A analyses and observe); Fig. 4 is the B-B cut-open view of Fig. 3; Fig. 5 is the first clutch-brake G portion enlarged drawing; Fig. 6 is the second clutch-brake F portion enlarged drawing; Fig. 7 is small flywheel view; Fig. 8 is moment of inertia adjustment block front view; Fig. 9 is the left view of Fig. 8; Figure 10 is vent disc front view; Figure 11 is the A-A cut-open view of Figure 10.
In figure: 1-second pneumatic fitting; 2-driving pulley; 3-terminal pad; 4-link; 5-first Brake Block; 6-second piston; 7-the 5th web joint; 8-the 5th bearing pin; 9-the 7th bearing pin; 10-the 7th web joint; 11-second master; 12-second groups of springs; 13-combined cover; 14-first bearing pin; 15-first cylinder; 16-first piston; 17-first web joint; 18-the 3rd bearing pin; 19-the 3rd web joint; 20-first brake press plate; 21-expansion sleeve assembly; 22-exchanges axle; 23-bearing seat; 24-bearing cap; 25-first pneumatic fitting; 26-exchanges bracing strut; 27-integral-rack; 28-first master; 29-first coupling assembling; 30-first brake disc; 31-the 4th web joint; 32-first clutch friction dish; 33-second web joint; 34-the 4th bearing pin; 35-second bearing pin; 36-is large flywheel initiatively; 37-transmission shaft; 38-moment of inertia trimmer; 39-small flywheel; 40-moment of inertia adjustment block; The driven large flywheel of 41-; 42-second coupling assembling; 43-second brake press plate; 44-the 8th web joint; 45-second brake disc; 46-the 8th bearing pin; 47-second clutch friction dish; 48-the 6th web joint; 49-second Brake Block; 50-second cylinder; 51-the 6th bearing pin; 52-vent disc; 53-driven pulley; 54-driven belt wheel shaft; 55-motor cabinet; 56-belt pulley; 57-buncher; 58-register pin; 59-bolt; 60-first groups of springs; 61-air flue; 62-annular air inlet duct; 63-air hole; 64-O-ring seal; The shutoff of 65-technique.
Embodiment
As illustrated in fig. 1 and 2, a kind of punching machine punching press clutch-brake testing table, it comprises integral-rack 27 and is arranged at the transmission shaft 37 of pivotable on integral-rack 27, transmission shaft 37 right-hand member is provided with initiatively large flywheel 36 by rolling bearing, also be provided with the active large flywheel driving mechanism corresponding to initiatively large flywheel 36, initiatively large flywheel driving mechanism comprises the motor cabinet 55 being fixed on integral-rack 27, motor cabinet 55 is provided with buncher 57, motor shaft is provided with belt pulley 56 by flat key, belt pulley 56 drives initiatively large flywheel 36 to rotate by belt gear.Initiatively large flywheel 36 rotating speed is electrodeless adjustable, by buncher 57, belt pulley 56, driving-belt driven rotary, initiatively the effect of large flywheel 36 is storage power in rotation, the effect of driven large flywheel 41 is after being driven to rotate, and produces moment of torsion by the angular acceleration produced and the moment of inertia of itself.Initiatively the moment of inertia of large flywheel 36 is fixing, initiatively the moment of inertia of large flywheel 36 should be greater than driven large flywheel 41 maximum rotation inertia (adding the maximum rotation inertia after moment of inertia adjustment block 10) and the moment of inertia sum of rotational parts together with starting with driven large flywheel 41, produces very little rotating speed and fall when making initiatively large flywheel 36 drive secondary part to start running.Exchange axle 22 on the right side of the large flywheel 36 of active is equipped with the first clutch-brake, first clutch-brake is underproof clutch-brake, first master of the first clutch-brake purchases parts by expansion sleeve assembly 21(, model: Z5) tighten together with exchange axle 22, first clutch-brake structure is general combined pneumatic clutch-brake, domestic, outer a large amount of clutch-brake adopting this kind of version, there are more than ten families in the enterprise of domestic production this kind of clutch-brake, form the series matching product of punching machine, as the DG-4B type clutch-brake that Shanghai Dingjie Machine Tool Accessories Co., Ltd. produces.
As shown in Figures 3 and 4, be provided with in the right side of transmission shaft 37 and exchange axle mounting hole, exchanging axle mounting hole is 8: 1 circular cone axis holes, exchange on axle mounting hole and be provided with keyway, exchange axle 22 left part be 8: 1 a truncated cone-shaped of cutting be inserted into and exchange in axle mounting hole and form cooperation, exchange on axle 22 and be also provided with the key coordinated with keyway, key is integrally made with exchange axle 22, exchanging between axle 22 and transmission shaft 37 end face uses screw axial to be connected and fixed, both to have ensure that under the dimensional tolerence that comparatively closely cooperates and exchange axle 22 can have been loaded taking-up easily from transmission shaft 37, also ensure that and can bear radial force, the overall double bond structure of exchange axle 22 is adopted to be connected with two keyways of transmission shaft 37, both can easily by exchange axle 22 from dismounting transmission shaft 37, also improve moment of torsion holding capacity, for preventing the axial float exchanging axle 22, with bolt, exchange axle 22 and transmission shaft 37 end face are connected and fixed, because this portion size is the clutch torque design of the maximum specification clutch-brake can tested according to testing table, so when installing various clutch-brake, the physical dimension of this part is constant, therefore transmission shaft 37 is also constant with the physical dimension of exchanging axle 22 coupling part.Exchange axle 22 right-hand member to be arranged on exchange bracing strut 26 by bearing, exchange bracing strut 26 and be fixed on integral-rack 27 by register pin 58 and bolt 59.Exchange axle 22 arranges the first clutch-brake, and the first clutch-brake comprises the first master 28, first cylinder 15, first piston 16, first clutch friction dish 32, first web joint 17 and the second web joint 33, first bearing pin 14 and the second bearing pin 35, also comprise the first brake disc 30,3rd web joint 19 and the 4th web joint the 31, three bearing pin 18 and the 4th bearing pin 34, first groups of springs 60, first brake press plate 20, first coupling assembling 29.Exchange the physical dimension of axle 22 center section depending on being tested the hole size of clutch-brake.For ensureing the right alignment of exchanging axle 22 and transmission shaft 37, exchanging axle 22 other end is arranged on exchange bracing strut 26 by rolling bearing, exchange axle 22 to be rotated on exchange bracing strut 26 by rolling bearing, exchanging bracing strut 26 register pin 58 is positioned on integral-rack 27 also fixing with integral-rack 27 with bolt 59, the physical dimension of exchanging axle 22 this part is the weight configuration of the maximum specification clutch-brake can tested according to testing table, so when testing various clutch-brake, the physical dimension of this part is constant (physical dimension of exchanging bracing strut 26 is also constant).Because exchanging physical dimension that axle 22 and transmission shaft 37 install, exchanges physical dimension that axle 22 and exchange bracing strut 26 install and do not change with by the change of testing clutch-brake specification, only have and exchange axle 22 and change with by the change of testing clutch-brake specification with by the size of testing clutch-brake mounting portion, so when testing the clutch brake of different size, only need change and exchanging axle 22.
First master 28 purchases parts, model Z5 by expansion sleeve assembly 21() be fixedly connected with transmission shaft; First cylinder 15 is fixed on transmission shaft, and first piston 16 is arranged in the first cylinder 15.
First clutch friction dish 32 is fixedly connected with the first web joint 17 one end with the second web joint 33 respectively, the other end of the first web joint 17 and the second web joint 33 is arranged on respectively by the first bearing pin 14 and the second bearing pin 35 and initiatively large flywheel 36 moves together with initiatively large flywheel 36, and the first web joint 17 and the second web joint 33 move axially respectively on the first bearing pin 14 and the second bearing pin 35; First clutch friction dish 32 is between the first master 28 and first piston 16.
First brake disc 30 is fixedly connected with the 3rd web joint 19 one end with the 4th web joint 31 respectively, the other end of the 3rd web joint 19 and the 4th web joint 31 is arranged on integral-rack respectively by the 3rd bearing pin 18 and the 4th bearing pin 34, and the 3rd web joint 19 and the 4th web joint 31 move axially respectively on the 3rd bearing pin 18 and the 4th bearing pin 34.
First groups of springs 60 is arranged between first piston 16 and the first master 28, first brake press plate 20 to be arranged on the right side of the first master 28 and to move left and right on the first master 28, first brake disc 30 is between the first brake press plate 20 and the first master 28, and the first brake press plate 20 is fixedly connected with first piston 16 by the first coupling assembling 29.
The second clutch-brake arranged at transmission shaft 37 left part comprises the second master 11, second cylinder 50, second piston 6, second clutch friction dish 47,5th web joint 7 and the 6th web joint 48,5th bearing pin 8 and the 6th bearing pin 51, also comprise the second brake disc the 45, seven web joint 10 and the 8th web joint 44,7th bearing pin 9 and the 8th bearing pin 46, second groups of springs 12, second brake press plate 43, second coupling assembling 42.
Second master 11 is arranged on transmission shaft 37 by rolling bearing, the right-hand member of the second master 11 is fixedly connected with by the left end of screw with combined cover 13, combined cover 13 right-hand member is fixed on the left end of driven large flywheel 41 by screw, combined cover 13 to be sleeved on transmission shaft 37 and with transmission shaft 37 clearance fit.
Second cylinder 50 is sleeved on transmission shaft 37 by rolling bearing, second piston 6 is arranged in the second cylinder 50, second clutch friction dish 47 is fixedly connected with the 5th web joint 7 one end with the 6th web joint 48 respectively, the other end of the 5th web joint 7 and the 6th web joint 48 is arranged on the two ends up and down of link 4 respectively by the 5th bearing pin 8 and the 6th bearing pin 51, the middle part of link 4 is fixedly connected with terminal pad 3, 5th web joint 7 and the 6th web joint 48 move axially respectively and make the second clutch friction dish 47 between the second piston 6 and the second master 11 realize the clutch with the second master 11 on the 5th bearing pin 8 and the 6th bearing pin 51, terminal pad 3 is fixedly connected with transmission shaft 37 by flat key, second brake disc 45 is fixedly connected with the 7th web joint 10 one end with the 8th web joint 44 respectively, the other end of the 7th web joint 10 and the 8th web joint 44 is arranged on the first Brake Block 5 and the second Brake Block 49 respectively by the 7th bearing pin 9 and the 8th bearing pin 46, and the first Brake Block 5 and the second Brake Block 49 are fixed on integral-rack 27, second groups of springs 12 is arranged between the second piston 6 and the second master 11, and the second brake press plate 43 is arranged on upper on the right side of the second master 11 and moves left and right on the second master 11, and the second brake press plate 43 is fixedly connected with the second piston 6 by the second coupling assembling 42, second brake disc 45 is between the second brake press plate 43 and the second master 11, position transmission shaft 37 is positioned on the left of the second cylinder 50 is set with vent disc 52, vent disc 52 is fixed together by screw and the second cylinder 50 and the second master 11, vent disc 52 is provided with air flue 61, air flue 61 one end is communicated with the second cylinder 50, air flue 61 other end is opened on the internal circular surfaces of vent disc 52, the internal circular surfaces of vent disc 52 is provided with the annular air inlet duct 62 through air flue 61 opening, annular air inlet duct 62 is corresponding with the air hole 63 being arranged at transmission shaft 37 left part, annular air inlet duct 62 both sides are provided with O-ring seal 64, the air hole 63 of transmission shaft 37 left part is communicated with the second pneumatic fitting 1.There is certain interval between vent disc 52 inner circle and transmission shaft 37 cylindrical, have seal groove in annular air inlet duct 62 both sides, realizing motive seal for installing O-ring seal 64.
Be fixedly installed small flywheel 39 in the middle part of transmission shaft 37, small flywheel 39 is made up of upper and lower two parts and is bolted on together.Because of the heavier-weight of initiatively large flywheel 36 and driven large flywheel 41, the size that transmission shaft 37 is positioned at two bearings support zone is greater than middle part size, for small flywheel 39 being arranged on the middle part of transmission shaft 37, small flywheel 39 is made up of upper and lower two parts, after upper and lower two parts are arranged on transmission shaft 37 middle part respectively, by bolt, small flywheel 39 is fixedly connected as an entirety.
Small flywheel 39 is bolted and installs moment of inertia trimmer 38, the size that small flywheel 39 rotates moment of inertia adjusts by increase and decrease moment of inertia trimmer 38, and the moment of inertia value adjusted is determined according to the braking torque of required test.
Moment of inertia adjustment block 40 fixed by driven large flywheel 41, and the size of the moment of inertia of driven large flywheel 41 adjusts by changing moment of inertia adjustment block 40, and the moment of inertia value adjusted is determined according to the clutch torque of required test.Because moment of inertia adjustment block 40 needs often to change, for ease of dismounting, moment of inertia adjustment block 40 is screwed in driven large flywheel 41 left and right sides respectively, every sides etc. divide 4 pieces, totally 8 pieces, each block moment of inertia adjustment block 40 is concave shape, and be sleeved on the radial degree of freedom of driven large flywheel 41 edge limitation moment of inertia adjustment block 40, moment of inertia adjustment block 40 and driven large flywheel 41 are fixed together with the direction being parallel to driven large flywheel 41 axis by screw.
Integral-rack 27 is integral solder structures.As shown in Figure 2, exchange bracing strut 26 to be fixed on integral-rack 27 by register pin 58 and bolt 59.
At transmission shaft 37 left end, a set of synchronous belt transmission device is also housed: driving pulley 2 is fixed on by flat key on transmission shaft 37, driven pulley 53 is fixed on driven belt wheel shaft by flat key, driven belt wheel shaft is arranged in the rolling bearing on integral-rack 27, can rotate in rolling bearing, two synchronous pulleys are rotated by Timing Belt or stop together with transmission shaft 37, and driven belt wheel shaft is provided with brake performance tester; Brake performance tester (for purchasing instrument, model is this instrument: SBM-1) being connected with driven belt wheel shaft, just can detecting the braking ability (drag angle and braking time) of underproof clutch-brake.
Second clutch-brake is the intrinsic clutch-brake of testing table, it is function for realizing this testing table and designs, and the specified clutch torque of the intrinsic clutch-brake of testing table should be greater than the specified clutch torque of underproof maximum specification clutch-brake on testing table.
During test, the moment of inertia value of small flywheel is adjusted, make initiatively large flywheel end clutch-brake (underproof clutch-brake) brake portion in conjunction with time the moment of inertia sum of part of braking equal the moment of inertia of corresponding punching machine secondary part.
One. when punching machine completes punching press under " single stroke job specification ", the main contents of the course of work of clutch-brake, feature, required experimental test are described below: 1. the course of work: press electric motor starting button, buncher operates, buncher drives large flywheel to rotate (idle running) on gear shaft by belt pulley, driving belt, and the effect of large flywheel stores punching press energy (motor, belt pulley, large flywheel are the active part of pressing machine).After pressing pressing machine punching press button again, electrical system control pneumatic system is to the cylinder air feed of clutch-brake, and after retarding spring group being compressed, brake portion is thrown off, and clutch part combines.After clutch part combines, gear shaft with motor press rotates together with large flywheel, gear shaft drives gear wheel, bent axle rotates together, bent axle makes Punching slider in press frame guide rail by topmost position (topmost position claims " upper dead center " by standard terminology) moving linearly (gear shaft downwards by connecting rod, gear wheel, excentric shaft, connecting rod, slide block is the secondary part of pressing machine), when slide block moves to close to during bottom dead centre, (slide block moves to lowermost position and puts, standard terminology claims " bottom dead centre "), be arranged on punch. contact on slide block to the workpiece be stamped, the energy of pressing machine active part is delivered to by the secondary part of pressing machine and the drift be arranged on slide block the workpiece that is stamped and carries out press work by the clutch part of clutch-brake, in enforcement punching course, the clutch part of clutch-brake bears moment of torsion (this moment of torsion is called " clutch torque ").After workpiece punching press is completed, pressing machine active part continues to drive secondary part running by the clutch part of clutch-brake, slide block is moving linearly upwards, when Punching slider return is to " upper dead center ", electrical system control pneumatic system stops air feed and is vented, the groups of springs be arranged in clutch-brake promotes clutch-brake clutch part and throws off (after the disengagement of clutch part, large flywheel enters idling conditions), promote brake portion to combine simultaneously, braked by pressing machine secondary part after brake part combines, pressing machine secondary part stops at upper dead center.During braking, the brake portion of clutch-brake bears moment of torsion (this moment of torsion is called " braking torque "), and pressing machine completes a working cycle (now, motor, large flywheel continue in rotation).After again pressing pressing machine punching press button, pressing machine can carry out once the circulation of above-mentioned press work again.The working method of above-mentioned pressing machine, standard terminology is called " single stroke job specification ".
For ensureing the safety of operator, " drag angle " of punching machine related standards to punching machine has done restriction, and (implication of " drag angle " is: the slide block of pressing machine is from the downward operational process of upper dead center, occur if any dangerous situation, operator can press the emergency stop push button of pressing machine, electrical system control pneumatic system makes the clutch part of clutch-brake throw off, brake portion combines immediately, and pressing machine is shut down.From emergency stop push button sends the signal that pressing machine shuts down, in Press Slider process out of service, the angle that press crankshaft turns over is " drag angle ").In punching machine technical conditions standard, regulation is done to the drag angle of different size punching machine.Because different size punching machine speed of crankshaft is different, also different to the requirement of drag angle, drag angle mean value is limited within the scope of 40 ゜, and corresponding braking time is generally between 0.14 to 0.18 second.
2. mechanical press clutch-brake feature: 1) specification is many: the specification (principal parameter of pressing machine is nominal pressure) of the punching machine that usage quantity is larger is from 800,000 wild marjoram 2,000,000 Ns, the pressing machine of 5 kinds of standard form specifications is had within the scope of this, its nominal pressure is respectively: 800,000 Ns, 1,100 thousand Ns, 1,250 thousand Ns, 1,600 thousand Ns, 2,000 thousand Ns, the pressing machine of above 5 kinds of specifications will with the clutch-brake of corresponding 5 kinds of specifications, and the clutch-brake of different size is different from transmission shaft installation dimension; The clutch that the clutch-brake of different size is operationally born, braking torque are different: clutch torque when carrying out nominal pressure punching press from the pressing machine of 800,000 wild marjoram 2,000 thousand Ns is from 3000 Ns of rice ~ 15000 N rice, and braking torque is from 1000 Ns of rice ~ 4200 N rice; The clutch-brake of different size operationally rotating speed is different: from the rotating speed of the clutch brake of press of 800,000 wild marjoram 2,000 thousand Ns from 220 revs/min to 390 revs/min (the punching machine structure of producing due to each enterprise is not quite similar, and the clutch torque of the punching machine of same specification, braking torque, rotating speed are not identical yet).2) clutch, brake torque value are required that accuracy is high: clutch torque (design torque calculates according to the nominal pressure of punching machine) required when the actual clutch torque as clutch-brake is less than design pressure machine, during press work will there is " skidding " phenomenon in clutch part, can not complete normal press work; As moment of torsion required when actual braking torque is less than design pressure machine, " drag angle " excessive (clutch-brake combines, it is fast, slow to throw off action, also can affect the size of drag angle) will be caused.As clutch torque and braking torque are selected excessive, can raise the cost, cause waste.3) frequency that works is high: punching machine is the clutch-brake work frequency (i.e. the clutch part of clutch-brake per minute and the work times of brake portion) under " single stroke job specification ": " JB/T6580.1-1999 gap-framepress technical conditions ", " JB/T1647.2-2012 straight side press technical conditions " have made regulation to the punching machine of all size single stroke work times per minute (i.e. the work frequency of clutch-brake), and the work frequency of 6 kinds of specification clutch-brakes that usage quantity is larger is from 15 beats/min to 30 beats/min.So work frequency height is also one of feature of mechanical press clutch-brake.4) heating and wearing and tearing: because the punching machine single stroke work frequency is high, clutch, braking torque greatly, so friction disc very easily generates heat and weares and teares, thus affect the performance of clutch-brake.During the work of " JB/T6580.1-1999 gap-framepress technical conditions ", " JB/T1647.2-2012 straight side press technical conditions " regulation clutch-brake friction disc, maximum temperature is 100 DEG C.The serviceable life of friction disc can be expressed in product description by manufacturing enterprise, friction disc wear to a certain extent after will change.The serviceable life of clutch-brake is the work times (namely the single stroke work times of punching machine represents) by clutch-brake.
3. the main contents need tested mechanical press clutch-brake, test:
1) operating mode of analog mechanical pressing machine clutch-brake work when single stroke job specification carries out nominal pressure punching press, the reliability (i.e. the mean time between failures of clutch-brake) in the test clutch-brake course of work.
2) wear extent (after wear extent is through simulation test certain hour, friction disc being pulled down, the amounts of thickness variation of inspection friction disc) of friction disc after simulation test.
3) whether the clutch torque of testing clutch-brake can reach dimension punching machine design torque required during punching press under nominal pressure.Torque sensor (purchase instrument, model is: STM) is arranged on middle part on transmission shaft, the clutch of generation, braking torque can be measured.
4) whether the drag angle testing the clutch-brake of different size meets standard regulation.Brake performance tester (purchase instrument, model is: SBM-1) is connected with driven belt wheel shaft, just can detects the braking ability (drag angle and braking time) of underproof clutch-brake.
5) in process of the test, test the temperature of clutch-brake friction disc.(instrument is purchased with infrared thermometer; Model is: T830t)
During as tested the clutch-brake of different size on testing table, the duty of clutch-brake must be made to meet duty when clutch-brake carries out press work on punching machine, by simulation test, the result that clutch-brake is tested just is tallied with the actual situation like this.In simulation test, following content just can think the realistic operating mode of simulation test with actual conforming to: the rotating speed of large flywheel before clutch part is combined, clutch-brake clutch part is born when carrying out nominal pressure press work clutch torque value, brake portion in conjunction with time rotating speed, brake portion bear the work frequency of brake torque value, clutch-brake.
Two. on testing table, simulate the operating mode of clutch-brake when all size punching machine carries out nominal pressure punching press under single stroke job specification.
1. simulate on testing table all size clutch-brake clutch part in conjunction with time rotating speed, pressing machine press work time the clutch torque that produces: the large flywheel of active of the rotation on testing table plays a part by rotating storage power, after driven large flywheel plays and is driven to rotate, the effect (according to mechanics principle, the moment of inertia × angular acceleration of moment of torsion=object) of moment of torsion is produced by the angular acceleration produced and the moment of inertia of itself.Initiatively the rotating speed of large flywheel is that the clutch part combination affecting the intrinsic clutch-brake of testing table is driven one of factor of the angular acceleration of rotating part instantaneously, for the actual condition of analog mechanical pressure clutch-brake clutch part, before being tested the combination of clutch-brake clutch part, initiatively the speed setting of flywheel is the rotating speed of the front large flywheel of clutch part combination of corresponding punching machine clutch-brake greatly.Rotating speed determines, and will change the size of clutch torque by the moment of inertia adjusting driven large flywheel.Adjusted by changing inertia adjustment block by the moment of inertia of driven large flywheel, torque value (carrying out calculating when punching machine designs obtaining) required when the clutch torque value (being recorded by torque sensor) that the driven large flywheel clutch part of the intrinsic clutch-brake of testing table being combined be driven rotation instantaneously and together rotating part produce and punching machine carry out nominal pressure punching press is consistent.
Course of action is as follows: when testing table electrical system control pneumatic system is (electric, pneumatic system is current techique) make pressurized air enter the first cylinder 15 by the first pneumatic fitting 25 along the air hole exchanged on axle 22, first piston 16 is moved to right in the first cylinder 15, first piston 16 compresses the first groups of springs 60 and promotes the first brake press plate 20 and moves to right, first brake disc 30 and the first master 28 are thrown off, promote the first clutch friction dish 32 to move to right simultaneously, first clutch friction dish 32 is engaged with the first master 28, because the first master 28 purchases parts by expansion sleeve assembly 21(, model Z5) be fixedly connected with transmission shaft 37, so transmission shaft 37 and the part that is fixedly connected with transmission shaft 37 driven by initiatively large flywheel 36 together with rotate.Then testing table pneumatic system controls pressurized air by the second pneumatic fitting 1, air hole 63 in transmission shaft 37, vent disc 52 enters the second cylinder 50, second piston 6 is moved to right, second piston 6 compresses the second groups of springs 12 and promotes the second brake press plate 43 and moves to right, second brake disc 45 and the second master 11 are thrown off, promote the second clutch friction dish 47 to move to right, second clutch friction dish 47 is engaged with the second master 11, together with the second master 11 to be screwed with driven large flywheel 41 by combined cover 13, so driven large flywheel 41(and the part be fastened on driven large flywheel 41: moment of inertia adjustment block 40, second master 11, terminal pad 3) be driven and start to rotate together with transmission shaft 37, create clutch torque.
When driven large flywheel 41 produces acceleration, initiatively large flywheel 36 has a prompt drop, namely produces negative acceleration.For making the large flywheel 36 of active after generation moment of torsion by the fast quick-recovery rotating speed of driven by motor, to produce next moment of torsion in the regulation frequency, initiatively the moment of inertia of large flywheel 36 should be greater than driven large flywheel 41 maximum rotation inertia (adding the maximum rotation inertia after moment of inertia adjustment block) and the moment of inertia sum of rotational parts together with starting with driven large flywheel 41.
Because the first clutch-brake is underproof clutch coupling, second clutch-brake is built-in clutch on testing table, so the specified clutch torque of the second clutch-brake should be greater than the maximum clutch torque of the first clutch-brake, otherwise, also not there is not " skidding " phenomenon in underproof clutch part, on testing table, built-in clutch has first skidded, and so just cannot test.
Testing table is simulated all size clutch-brake brake portion in conjunction with time rotating speed and braking procedure produce braking torque: first (underproof) clutch-brake brake portion in conjunction with time, be braked part produce negative angle acceleration and be braked part moment of inertia create braking torque.For the actual condition of analog mechanical clutch brake of press brake portion, first clutch-brake brake portion is braked the rotating speed rotating speed of large flywheel (namely initiatively) of part before combining should with to be braked rotating speed (i.e. the rotating speed of the large flywheel of punching machine) partly before punching machine clutch-brake brake portion combines consistent, because initiatively the rotating speed of large flywheel has been adjusted to consistent with the rotating speed of the large flywheel of corresponding punching machine before the first clutch-brake clutch part combines, second clutch-brake clutch part divide engage after the clutch torque that produces also adjusted is the same to clutch torque when carrying out nominal pressure punching press with corresponding punching machine, produce the time of clutch torque all in moment, so be braked the rotating speed of part before being braked also be braked with corresponding punching machine part be braked before rotating speed consistent.Adjust by increasing or reduce the quantity (the large I of moment of inertia of each trimmer manufactures and designs as required) being arranged on small flywheel upper tab, when making braking torque (recording with torque sensor) and design punching machine, required braking torque is consistent.
Course of action is as follows: connect described in the 1st article of course of action, clutch torque is created after the clutch part combination of second (testing table is intrinsic) clutch-brake, then electrical system control pneumatic system exhaust, pressurized air in second cylinder 50 is by vent disc 52, air hole 63 in transmission shaft 37, second pneumatic fitting 1 is discharged, second groups of springs 12 promotes the second piston 6 and moves to left, second clutch friction dish 47 and the second master 11 are thrown off, because the second piston 6 is fixedly connected with the second brake press plate 43 by the second coupling assembling 42, second brake press plate 43 moves to left together with the second piston 6, second brake press plate 43 promotes the second brake disc 45 and moves to left, second brake disc 45 is combined with the second master 11, together with the second master 11 to be screwed with driven large flywheel 41 by combined cover 13, so after brake portion combination, driven large flywheel 41 and the part be fixedly connected with driven large flywheel 41 are all braked.Then, electrical system control pneumatic system makes the first clutch friction dish 32 of first (underproof) clutch-brake throw off with the first master 28 (transmission shaft 37 is separated with the large flywheel 36 of active), first brake disc 30 is combined with the first master 28, by transmission shaft 37, small flywheel 39 and rotate together part braking, create braking torque.
3. above to the clutch torque produced when how to simulate all size punching machine press work, the operating mode of braking torque is described, the course of work that analog mechanical pressing machine " single stroke job specification " once circulates will produce clutch torque exactly, the operating mode process of braking torque combines: press electric motor starting button, motor drives initiatively large flywheel to dally on transmission shaft by belt pulley and driving belt, after testing table numerical control screen display rotating speed arrives setting value (rotating speed of setting is the rotating speed of the large flywheel of corresponding punching machine), press Action Button, electrical system control pneumatic system drives the action of first (underproof) clutch-brake, the brake portion of the first clutch-brake is thrown off, clutch part combines, initiatively large flywheel 36 drives transmission shaft 37 and the small flywheel 39 be arranged on transmission shaft 37, transmitting torque parts rotate together (operating mode that above process simulation punching machine active part drives secondary part to start running), then electrical system control pneumatic system makes second (testing table is intrinsic) clutch-brake clutch part combine, driven large flywheel 41 starts rotation, produce clutch torque (simulating the operating mode producing clutch torque when punching machine carries out press work instantaneously) instantaneously.The time interval (namely underproof clutch-brake clutch part combines the rear time interval to producing clutch torque) to second clutch combination after the first clutch-brake clutch part combines can be set by digital control system, and this time interval setting value is the same with Press Slider time interval of press work from upper dead center moves to downwards.The torque sensor be arranged on transmission shaft monitors after torque value immediately to digital control system sender, digital control system controls pneumatic system makes the clutch part of second (testing table is intrinsic) clutch-brake throw off, brake portion is braked, driven large flywheel is by 41 brakings, transmission shaft 34 and small flywheel 39, torque transfer member remains in operation after certain hour under the drive of the large flywheel 36 of active, then digital control system controls by pneumatic system, first (by testing) clutch-brake clutch part to be thrown off, brake portion combines, by transmission shaft 37, small flywheel 39, torque transfer member is braked and is produced braking torque, transmission shaft 37, small flywheel 39, torque transfer member stops operating (to be simulated after Press Slider completes press work, return upper dead center and be braked the operating mode shut down).
Whole process simulation punching machine " single stroke job specification " one action state of cyclic operation above, as long as the time interval by digital control system controls each working cycle, " the connection frequency " of testing table just can be made to meet the connection frequency of corresponding punching machine.
Claims (5)
1. a punching machine punching press clutch-brake testing table, it comprises integral-rack and is arranged at the transmission shaft of pivotable on integral-rack, it is characterized in that transmission shaft right-hand member is provided with initiatively large flywheel by rolling bearing, also be provided with the active large flywheel driving mechanism corresponding to initiatively large flywheel, be provided with in the right side of transmission shaft and exchange axle mounting hole, exchanging axle mounting hole is 8: 1 circular cone axis holes, exchange on axle mounting hole and be provided with keyway, exchange axle left part be 8: 1 a truncated cone-shaped of cutting be inserted into and exchange in axle mounting hole and form cooperation, exchange on axle and be also provided with the key coordinated with keyway, exchanging between axle and transmission shaft end surface uses screw axial to be connected and fixed, and exchange axle right-hand member and be arranged on exchange bracing strut by bearing, exchange bracing strut is by register pin and be bolted on integral-rack, exchange axle arranges the first clutch-brake, and the first clutch-brake comprises the first master, the first cylinder, first piston, first clutch friction dish, the first web joint and the second web joint, the first bearing pin and the second bearing pin, also comprise the first brake disc, 3rd web joint and the 4th web joint, the 3rd bearing pin and the 4th bearing pin, the first groups of springs, first brake press plate, the first coupling assembling, first master is fixedly connected with transmission shaft by expansion sleeve assembly, first cylinder is fixed on transmission shaft, and first piston is arranged in the first cylinder, first clutch friction dish is fixedly connected with the first web joint one end with the second web joint respectively, the other end of the first web joint and the second web joint is arranged on respectively by the first bearing pin and the second bearing pin and initiatively large flywheel moves together with initiatively large flywheel, and the first web joint and the second web joint move axially respectively on the first bearing pin and the second bearing pin, first clutch friction dish is between the first master and first piston, first brake disc is fixedly connected with the 3rd web joint one end with the 4th web joint respectively, the other end of the 3rd web joint and the 4th web joint is arranged on integral-rack respectively by the 3rd bearing pin and the 4th bearing pin, and the 3rd web joint and the 4th web joint move axially respectively on the 3rd bearing pin and the 4th bearing pin, first groups of springs is arranged between first piston and the first master, first brake press plate to be arranged on the right side of the first master and to move left and right on the first master, first brake disc is between the first brake press plate and the first master, and the first brake press plate is fixedly connected with first piston by the first coupling assembling, the second clutch-brake arranged at transmission shaft left part comprises the second master, second cylinder, the second piston, the second clutch friction dish, 5th web joint and the 6th web joint, 5th bearing pin and the 6th bearing pin, also comprise the second brake disc, the 7th web joint and the 8th web joint, 7th bearing pin and the 8th bearing pin, second groups of springs, the second brake press plate, the second coupling assembling, second master is arranged on transmission shaft by rolling bearing, and the right-hand member of the second master is fixedly connected with the left end of combined cover by screw, and combined cover right-hand member is fixed on the left end of driven large flywheel by screw, combined cover to be sleeved on transmission shaft and with transmission shaft clearance fit, second cylinder is sleeved on transmission shaft by rolling bearing, second piston is arranged in the second cylinder, second clutch friction dish is fixedly connected with the 5th web joint one end with the 6th web joint respectively, the other end of the 5th web joint and the 6th web joint is arranged on the two ends up and down of link respectively by the 5th bearing pin and the 6th bearing pin, the middle part of link is fixedly connected with terminal pad, 5th web joint and the 6th web joint move axially respectively and make the second clutch friction dish between the second cylinder and the second master realize the clutch with the second master on the 5th bearing pin and the 6th bearing pin, terminal pad is fixedly connected with transmission shaft by flat key, second brake disc is fixedly connected with the 7th web joint one end with the 8th web joint respectively, the other end of the 7th web joint and the 8th web joint is arranged on the first Brake Block and the second Brake Block respectively by the 7th bearing pin, the 8th bearing pin, and the first Brake Block and the second Brake Block are fixed on integral-rack, second groups of springs is arranged between the second piston and the second master, and the second brake press plate is arranged on upper on the right side of the second master and moves left and right on the second master, and the second brake press plate is fixedly connected with the second piston by the second coupling assembling, second brake disc is between the second brake press plate and the second master, position transmission shaft is positioned on the left of the second cylinder is set with vent disc, vent disc is fixed together by screw and the second cylinder and the second master, vent disc is provided with air flue, air flue one end is communicated with the second cylinder, the air flue other end is opened on the internal circular surfaces of vent disc, the internal circular surfaces of vent disc is provided with the annular air inlet duct through airway open, annular air inlet duct is corresponding with the air hole being arranged at transmission shaft left part, annular air inlet duct both sides are provided with O-ring seal, and the air hole of transmission shaft left part is communicated with the second pneumatic fitting, be fixedly installed small flywheel in the middle part of transmission shaft, small flywheel is made up of upper and lower two parts and is bolted on together, small flywheel is bolted and installs moment of inertia trimmer, the size of small flywheel moment of inertia is adjusted by increase and decrease moment of inertia trimmer, and the moment of inertia value adjusted is determined according to the braking torque of required test.
2. punching machine punching press clutch-brake testing table according to claim 1, is characterized in that fixing moment of inertia adjustment block on driven large flywheel.
3. punching machine punching press clutch-brake testing table according to claim 2, it is characterized in that moment of inertia adjustment block is screwed in the driven large flywheel left and right sides respectively, every side is divided into 4 pieces, totally 8 pieces, each block moment of inertia adjustment block is concave shape, be sleeved on the radial degree of freedom of driven large flywheel rim restriction adjustment block, screw be parallel to driven large flywheel shaft to direction moment of inertia adjustment block and driven large flywheel are fixed together.
4. punching machine punching press clutch-brake testing table according to claim 1, is characterized in that integral-rack is integral solder structure, and exchange bracing strut is by register pin and be bolted on integral-rack.
5. punching machine punching press clutch-brake testing table according to claim 1, it is characterized in that, at transmission shaft left end, a set of synchronous belt transmission device is also housed: driving pulley is fixed on transmission shaft by flat key, driven pulley is fixed on driven belt wheel shaft by flat key, driven belt wheel shaft is arranged in the rolling bearing on integral-rack, can rotate in rolling bearing, two synchronous pulleys are rotated by Timing Belt or stop together with transmission shaft, and driven belt wheel shaft is provided with brake performance tester.
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| US10352385B2 (en) | 2013-03-15 | 2019-07-16 | Stolle Machinery Company, Llc | Drive assembly for conversion system |
| JP2018534144A (en) * | 2015-10-13 | 2018-11-22 | ストール マシーナリ カンパニー, エルエルシーStolle Machinery Company, LLC | Conversion system drive assembly |
| CN107701601A (en) * | 2017-10-11 | 2018-02-16 | 重庆凯瑞汽车试验设备开发有限公司 | A kind of flywheel automatic loading and unloading mechanism |
| CN109826876A (en) * | 2019-03-06 | 2019-05-31 | 浙江易锻精密机械有限公司 | A kind of circulating cooling fission clutch |
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| US2449091A (en) * | 1945-01-23 | 1948-09-14 | Richard G Starling | Machine for testing clutch and brake assemblies |
| CN1298344A (en) * | 1999-02-22 | 2001-06-06 | 帕斯卡株式会社 | Clutch/brake device of machine press |
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| US2449091A (en) * | 1945-01-23 | 1948-09-14 | Richard G Starling | Machine for testing clutch and brake assemblies |
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| CN201020872Y (en) * | 2007-01-06 | 2008-02-13 | 广东锻压机床厂有限公司 | Clutch braking device for press |
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