CN2399150Y

CN2399150Y - Crankshaft stress eliminating straightener

Info

Publication number: CN2399150Y
Application number: CN 99257209
Authority: CN
Inventors: 刘跃基
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-12-07
Filing date: 1999-12-07
Publication date: 2000-10-04
Anticipated expiration: 2009-12-07

Abstract

The utility model relates to a crankshaft stress eliminating straightener, which comprises a machine frame, a working table and a vibrator. The upper surface of the machine frame is provided with an installing groove. The working table is movably connected above a blocking edge at a corresponding position in the installing groove on the upper surface of the machine frame through a connecting bolt which is fixedly arranged on four corners of the lower surface of the working table. The damping device is arranged on the connecting bolt and the blocking edge. The upper surface of the working table is fixedly provided with two guide rails with T-shaped slide grooves, and a compressing device is movably connected between the two guide rails through a T-shaped screw nut. Two supporting frames are also arranged on the working table and the vibrator is arranged in the middle part of the lower surface of the working table. The utility model has the characteristics of convenient operation, good effect, small vibration of the machine frame, etc.

Description

A kind of crankshaft stress is eliminated, straightener

The utility model relates to a kind of machining equipment, is meant that especially a kind of crankshaft stress is eliminated, straightener.

At present, make, when renovation and maintenance bent axle, for eliminating the stress that produces in the bent axle when the machining crankshafts, the normal method that adopts has two kinds, a kind of is tempering; Another kind is that bent axle two is taken on, and hangs up a vibrating body, vibratory stress reliefing more in the middle.Use when above-mentioned first method is suitable for producing in enormous quantities, just seem that some is uneconomical when small lot maintenance, renovation; And above-mentioned second method, though also can use, its security is lower, installs and inconvenient operation, and owing to there is not shock-damping device, when vibratory stress reliefing, vibration wave not only acts on bent axle, but also outwards propagate, damage, belong to a kind of makeshift.In addition, bent axle also can produce flexural deformation in process, often needs to adopt mechanical means to carry out alignment, needs to use special-purpose alignment equipment.

The purpose of this utility model is to provide a kind of stress that not only can utilize in the mode of vibration elimination bent axle, and can carry out the elimination of special equipment crankshaft stress, the straightener with good damping device of bent axle alignment simultaneously.

The purpose of this utility model is achieved in that a kind of crankshaft stress is eliminated, straightener, comprise frame, workbench and vibrator, on the upper surface of frame, have a rectangular mounting groove, workbench is movably connected in the frame upper surface mounting groove on the rib on the relevant position by being fixedly installed on connecting bolt on four jiaos of its lower surfaces, rib is fixedlyed connected with frame, and connecting bolt and rib are provided with damping device; Vertical both sides secured in parallel at the upper surface of workbench is being provided with two guide rails that have T shape chute, is flexibly connecting hold down gag by T-nut therein; The top that also is provided with two activities between two guide rails on the worktable upper surface has the support of V-shaped groove; Vibrator is connected the middle part of workbench lower surface with bolting.

When using the utility model to eliminate the stress of bent axle and straightening crank shaft, only need the two ends of bent axle are carried on a shoulder pole respectively on two supports on the workbench, find out the high point of deflection of crankshaft, and make it upwards, adjust inverse-U-shape rack then, presser feet on it is positioned on the height point of deflection of crankshaft, pull the spanner rotary screw then, the presser feet that makes its lower end is downwards with the bent axle straightening and be pressed abd fixed on the workbench, connect power supply then, vibrator produces vibration wave, makes crankshaft vibration, thereby eliminates the stress in the bent axle.Owing to being provided with the damping device that is made of eight elastic caoutchouc pipe boxes between workbench and the frame, the vibration that it can weaken the utility model frame when work itself has reduced vibration wave and has outwards propagated the flutter failure that reaches frame by frame.The utlity model has the characteristics such as easy to operate, effective, that frame vibration is little of using.

Fig. 1 be the utility model along Fig. 2 B-B to the sectional structure schematic diagram

Fig. 2 be the utility model along Figure 1A-A to the sectional structure schematic diagram

Fig. 3 is office's structure for amplifying schematic diagram of Fig. 1 I portion

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is further described, a kind of crankshaft stress is eliminated, straightener, comprise frame 17, workbench 3 and vibrator 19, on the upper surface of frame 17, have a rectangular mounting groove, workbench 3 is movably connected in the frame 17 upper surface mounting grooves on the rib 12 on the relevant position by being fixedly installed on connecting bolt 13 on four jiaos of its lower surfaces, rib 12 is fixedlyed connected with frame 17, connecting bolt 13 and rib 12 are provided with damping device, and its effect is that the vibration wave that reduces on the workbench 3 is propagated on frame 17; As shown in Figure 2, vertical both sides secured in parallel at the upper surface of workbench 3 is being provided with two guide rails 2 that have T shape chute, flexibly connecting hold down gag by T-nut 4 therein, hold down gag just can move forward and backward by the direction of T-nut 4 along guide rail 2 like this; The top that also is provided with two activities between two guide rails 2 on workbench 3 upper surfaces has the support 1 of V-shaped groove, and its effect is the two ends that are used for supporting bent axle; Vibrator 19 usefulness bolts 18 are fixedly connected on the middle part of workbench 3 lower surfaces, and it can make workbench produce vibration uniformly like this.

As shown in Figure 3, damping device is to be made of two elastic rubber sleeve 14 that are enclosed within respectively on the rib 12 both sides connecting bolts 13, and elastic rubber sleeve 14 is pressed on the upper and lower surface of rib 12 respectively by pad 15 and locking nut 16; The diameter of the installing hole on the rib 12 is greater than the diameter of connecting bolt 13, less than the external diameter of elastic rubber sleeve 14.When workbench 3 vibration, pass the elastic rubber sleeve 14 that the energy major part of the vibration wave on the frame is connected on the bolt 13 and absorb, reduced the vibration of frame 17.Certainly the elastic rubber sleeve 14 in the damping device also can change spring or other flexible member into.

Hold down gag is an inverse-U-shape rack, crossbeam 7 middle parts of inverse-U-shape rack have a screwed hole, one screw rod 9 is installed on the crossbeam 7 by it, be provided with the presser feet 6 that a bottom has V-shaped groove in the lower end of screw rod 9, be provided with a spanner 8 on the top of screw rod 9, pull spanner 8 and make screw rod 9 rotation, height that can adjusting screw(rod) 9 bottom presser feets 6; The supporting leg 11 of inverse-U-shape rack is threaded with T-nut 4, and T-nut 4 places the T shape chute on the guide rail 2, plays the effect of spacing load.An end that on the supporting leg 11 of inverse-U-shape rack, is connected with T-nut 4, a locking nut 5 can also be set above T-nut 4, like this behind the fixed position of determining good inverse-U-shape rack, be rotated down locking nut 5, itself and T-nut 4 one are worked clamp guide rail 2, strengthen the fixedly purpose of inverse-U-shape rack thereby reach.Screw thread is carved with in the upper end of supporting leg 11 in addition, and crossbeam 7 is by being movably arranged on adjusting crossbeam 7 adjusting nut 10 highly and the upper end flexible connection of supporting leg 11 on its two ends; By rotation adjusting nut 10 can regulate crossbeam 7 on supporting leg 11 height or crossbeam 7 disassembled from supporting leg 11, thereby enlarged the scope of application of inverse-U-shape rack.

When using the utility model to eliminate crankshaft stress, earlier the two ends of bent axle are carried on a shoulder pole on the support 1 between the workbench 3 surperficial upper rails 2, move inverse-U-shape rack by T-nut 4 to suitable position, bent axle middle part along guide rail 2 then, rotating spanner 8, the presser feet 6 of screw rod 9 lower ends is moved down, be pressed on the bent axle, bent axle is securely fixed on the workbench 3, connect power supply then, vibrator 19 work, make whole workbench 3 produce vibration, thereby eliminate the stress in the fixed crankshaft on the workbench by vibration together with the bent axle of fixing on it; Owing between workbench 3 and the frame 17 damping device is housed, it has absorbed most of energy that workbench 3 is delivered to the vibration wave on the frame 17, so that frame 17 is vibrated itself is little, and stable working.

When the needs straightening crank shaft, earlier the two ends of bent axle are carried on a shoulder pole on workbench 3 on the support between the guide rail 21, find out the crooked high point of bent axle then, and make it upwards, adjust inverse-U-shape rack directly over the high point of bent axle, rotating spanner 8, the presser feet 6 of screw rod 9 lower ends is moved down, be pressed on the height point of bent axle, continue rotary spanner 8, adjust the height of presser feet 6, thus straightening crank shaft.

When should straightening crank shaft, when eliminating the stress of bent axle again, as long as according to aforesaid operations, first straightening crank shaft, and then vibratory stress reliefing gets final product.

Claims

A crankshaft stress eliminate, straightener, comprise frame (17), workbench (3) and vibrator (19), it is characterized in that on the upper surface of frame (17), having a rectangular mounting groove, workbench (3) is movably connected in frame (17) the upper surface mounting groove on the rib (12) on the relevant position by being fixedly installed on connecting bolt (13) on four jiaos of its lower surfaces, rib (12) is fixedlyed connected with frame (17), and connecting bolt (13) and rib (12) are provided with damping device; Vertical both sides secured in parallel at the upper surface of workbench (3) is being provided with two guide rails (2) that have T shape chute, is flexibly connecting hold down gag by T-nut (4) therein; The support (1) that has V-shaped groove on the top that also is provided with two activities on workbench (3) upper surface between two guide rails (2); Vibrator (19) is fixedly connected on the middle part of workbench (3) lower surface with bolt (18).
2. crankshaft stress according to claim 1 is eliminated, straightener, it is characterized in that damping device is to be made of two elastic rubber sleeve (14) that are enclosed within respectively on rib (12) the both sides connecting bolts (13), elastic rubber sleeve (14) is pressed on respectively on the upper and lower surface of rib (12) by pad (15) and locking nut (16); The diameter of the installing hole on the rib (12) is greater than the diameter of connecting bolt (13), less than the external diameter of elastic rubber sleeve (14).
3. crankshaft stress according to claim 2 is eliminated, straightener, it is characterized in that the elastic rubber sleeve (14) in the damping device also can change spring into.
4. crankshaft stress according to claim 1 is eliminated, straightener, it is characterized in that hold down gag is an inverse-U-shape rack, the crossbeam of inverse-U-shape rack (7) middle part has a screwed hole, one screw rod (9) is installed on the crossbeam (7) by it, be provided with the presser feet (6) that a bottom has V-shaped groove in the lower end of screw rod (9), be provided with a spanner (8) at the top of screw rod (9); The supporting leg of inverse-U-shape rack (11) is threaded with T-nut (4) in the guide rail (2).
5. crankshaft stress according to claim 4 is eliminated, straightener, it is characterized in that the supporting leg (11) at inverse-U-shape rack is gone up an end that is connected with T-nut (4), in the top of T-nut (4) locking nut (5) can also be set.
According to claim 4 or 5 described crankshaft stress eliminate, straightener, screw thread is carved with in the upper end that it is characterized in that supporting leg (11), and crossbeam (7) is by being movably arranged on adjusting crossbeam (7) adjusting nut (10) highly and the upper end flexible connection of supporting leg (11) on its two ends.