阅读说明：本技术 一种曲轴再制造用打磨装置 (Grinding device for crankshaft remanufacturing ) 是由 程敬卿 王蓉蓉 于 2019-11-22 设计创作，主要内容包括：本发明涉及一种曲轴再制造用打磨装置,包括用于对曲轴的两端进行夹紧并带动其转动的夹紧组件,所述夹紧组件的两端距离可调节,所述夹紧组件上设置有若干个用于对曲轴上不同位置的轴颈进行同时打磨的打磨组件。本发明通过在棘轮杆上设置若干组弓形杆和打磨带,弓形杆带动打磨带沿着棘轮杆进行横向的移动,实现与下方曲轴的轴颈进行一一对应,同时转动弓形杆以及对弓形杆的转动进行锁定的棘爪,使得打磨带可以接触到曲轴轴颈,每组的打磨带对应曲轴的一个轴颈,并通过动力杆、第一齿轮、第二齿轮以及传动带轮的传动,带动打磨带进行转动,实现多组的同步转动打磨,多个打磨带的同时打磨,增加了打磨的速度,提升了工作的效率。(The invention relates to a grinding device for crankshaft remanufacturing, which comprises a clamping assembly for clamping two ends of a crankshaft and driving the crankshaft to rotate, wherein the distance between the two ends of the clamping assembly is adjustable, and a plurality of grinding assemblies for grinding shaft necks at different positions on the crankshaft simultaneously are arranged on the clamping assembly. According to the invention, the ratchet rod is provided with a plurality of groups of the arc-shaped rods and the grinding belts, the arc-shaped rods drive the grinding belts to move transversely along the ratchet rod, one-to-one correspondence with the journals of the crankshafts below is realized, the arc-shaped rods are rotated simultaneously, and the pawls for locking the rotation of the arc-shaped rods are rotated, so that the grinding belts can contact the journals of the crankshafts, each group of the grinding belts corresponds to one journal of the crankshaft, the grinding belts are driven to rotate through the transmission of the power rod, the first gear, the second gear and the transmission belt wheel, the synchronous rotation grinding of a plurality of groups is realized, the grinding belts are simultaneously ground, the grinding speed is increased, and the working efficiency is improved.)

1. The utility model provides a crankshaft is grinding device for refabrication which characterized in that: including being used for pressing from both sides tight and drive its pivoted clamping component (1) to the both ends of bent axle, the both ends distance of clamping component (1) is adjustable, be provided with the subassembly (2) of polishing that a plurality of is used for polishing simultaneously to the journal of different positions on the bent axle on clamping component (1).

2. The grinding device for crankshaft remanufacturing according to claim 1, wherein: the clamping assembly (1) comprises a base (11), the base (11) is connected with a support (13) in a sliding mode through a sliding groove (14) formed in the upper surface, and the support (13) is pushed by a cylinder (12) fixed to one end of the base (11).

3. The grinding device for crankshaft remanufacturing according to claim 2, wherein: support (13) with the side of base (11) all is provided with conical member (15), just support (13) side conical member (15) pass through belt drive connect in fix first motor (16) of support (13) upper surface.

4. The grinding device for crankshaft remanufacturing according to claim 1, wherein: the polishing assembly (2) comprises a ratchet rod (21), a plurality of groups of moving parts and polishing parts are sleeved on the outer wall of the ratchet rod (21), and the moving parts and the polishing parts are connected through bearings (24).

5. The grinding device for crankshaft remanufacturing according to claim 4, wherein: the moving piece comprises an arched rod (22), one end of the arched rod (22) is sleeved on the outer surface of the ratchet rod (21), a pawl (23) is rotatably connected to the side surface of the arched rod (22), and the pawl (23) is clamped on the ratchet rod (21) and used for fixing the arched rod (22) on the outer wall of the ratchet rod (21).

6. The grinding device for crankshaft remanufacturing according to claim 5, wherein: the polishing part comprises a power rod (29) fixed to the side face of the base (11), the outer wall of the power rod (29) is connected with a first gear (28) in a sliding mode, the first gear (28) is meshed with a second gear (26), the second gear (26) is fixedly connected with a transmission belt wheel (25), the outer wall of the transmission belt wheel (25) is sleeved with a polishing belt (27), and the other end of the polishing belt (27) is sleeved on a rotating wheel arranged at the handheld end of the bow-shaped rod (22).

7. The grinding device for crankshaft remanufacturing according to claim 4, wherein: the grinding piece is sleeved on the inner ring of the bearing (24), and the moving piece is fixed with the outer ring of the bearing (24) through a lantern ring.

Technical Field

The invention relates to the field of machine production reprocessing, in particular to a grinding device for crankshaft remanufacturing.

Background

The crankshaft is the main rotating part of the engine, can bear the up-and-down (reciprocating) movement of the connecting rod after installing the connecting rod and become the cyclic (rotary) movement, mainly include the main journal, the connecting rod journal, the main journal is installed on cylinder block, the connecting rod journal is connected with big end hole of connecting rod, the small end hole of connecting rod is connected with cylinder piston, used for bearing the force that the connecting rod transmits, and change it into torque and export and drive other accessories on the engine to work through the crankshaft. Remanufacturing is a process of reviving the life of old machine equipment, and the old machine equipment is taken as a blank, and a special process and a special technology are adopted to perform one-time new manufacturing on the basis of the original manufacturing.

The crankshaft needs to be polished at the main journal position in the machining process of remanufacturing again, so that the main journal is smooth, abrasion in use in the future is avoided, and the service life of the crankshaft is prolonged. However, the main journal and the connecting rod journal are not coaxially arranged, so that the traditional grinding device only needs to adopt a mode of grinding one by one, the speed of the mode is low, and the working efficiency is seriously influenced.

Disclosure of Invention

The invention provides a grinding device for remanufacturing a crankshaft, aiming at meeting the requirement of simultaneously grinding a main journal and a connecting rod journal of the crankshaft.

The technical problem to be solved by the invention is realized by adopting the following technical scheme:

the utility model provides a crankshaft is grinding device for refabrication, presss from both sides tightly and drives its pivoted clamping component including being used for the both ends to the bent axle, clamping component's both ends distance is adjustable, the last grinding component that is provided with a plurality of and is used for going on polishing simultaneously to the journal of different positions on the bent axle of clamping component.

The clamping assembly comprises a base, the base is connected with a support in a sliding mode through a sliding groove formed in the upper surface of the base, and the support is pushed by a cylinder fixed to one end of the base.

The support with the side of base all is provided with the toper piece, just the support side the toper piece passes through belt drive to be connected in fixing the first motor of support upper surface.

The polishing assembly comprises a ratchet rod, a plurality of groups of moving parts and polishing parts are sleeved on the outer wall of the ratchet rod, and the moving parts and the polishing parts are connected through bearings.

The moving piece comprises an arched rod, one end of the arched rod is sleeved on the outer surface of the ratchet rod, a pawl is rotatably connected to the side face of the arched rod, and the pawl is clamped on the ratchet rod and used for fixing the arched rod on the outer wall of the ratchet rod.

The grinding part comprises a power rod fixed to the side face of the base, the outer wall of the power rod is connected with a first gear in a sliding mode, the first gear is meshed with a second gear in a transmission mode, a transmission belt wheel is fixedly connected with the second gear, a grinding belt is sleeved on the outer wall of the transmission belt wheel, and the other end of the grinding belt is sleeved on a rotating wheel arranged at the handheld end of the bow-shaped rod.

The grinding piece is sleeved on the inner ring of the bearing, and the moving piece is fixed with the outer ring of the bearing through a lantern ring.

The invention has the beneficial effects that:

according to the invention, the ratchet rod is provided with a plurality of groups of the arc-shaped rods and the grinding belts, the arc-shaped rods drive the grinding belts to move transversely along the ratchet rod, one-to-one correspondence with the journals of the crankshafts below is realized, the arc-shaped rods are rotated simultaneously, and the pawls for locking the rotation of the arc-shaped rods are rotated, so that the grinding belts can contact the journals of the crankshafts, each group of the grinding belts corresponds to one journal of the crankshaft, the grinding belts are driven to rotate through the transmission of the power rod, the first gear, the second gear and the transmission belt wheel, the synchronous rotation grinding of a plurality of groups is realized, the grinding belts are simultaneously ground, the grinding speed is increased, and the working efficiency is improved.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a top plan overall schematic view of the present invention;

FIG. 3 is a partial schematic view of the present invention;

FIG. 4 is a schematic view of a portion of the grinding assembly of the present invention;

FIG. 5 is a side view at A-A of FIG. 2;

fig. 6 is a partial sectional view of fig. 5B-B.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be described more clearly and more completely with reference to the drawings in the following embodiments, and it is understood that the described embodiments are only a part of the present invention, rather than all of the present invention, and based on the embodiments, other embodiments obtained by those skilled in the art without inventive exercise are within the protection scope of the present invention.

As shown in fig. 1 to 6, a grinding device for crankshaft remanufacturing comprises a clamping assembly 1 for clamping two ends of a crankshaft and driving the crankshaft to rotate, wherein the distance between the two ends of the clamping assembly 1 is adjustable, and a plurality of grinding assemblies 2 for grinding journals at different positions on the crankshaft simultaneously are arranged on the clamping assembly 1.

The clamping assembly 1 comprises a base 11, the base 11 is slidably connected with a bracket 13 through a sliding chute 14 formed in the upper surface of the base, and the bracket 13 is pushed by a cylinder 12 fixed at one end of the base 11. The cylinder 12 pushes the bracket 13 to close or open towards one end of the base 11 along the sliding slot 14 for adapting to crankshafts with different lengths.

The side surfaces of the bracket 13 and the base 11 are provided with conical members 15, and the conical members 15 on the side surfaces of the bracket 13 are connected to a first motor 16 fixed on the upper surface of the bracket 13 through a belt drive. Two conical parts 15 carry out the centre gripping to the left and right sides of bent axle fixedly, and first motor 16 drives conical part 15 that is located support 13 and rotates simultaneously, and then drives the bent axle and rotate the adjustment angle position of polishing.

The grinding assembly 2 comprises a ratchet rod 21, a plurality of groups of moving parts and grinding parts are sleeved on the outer wall of the ratchet rod 21, and the moving parts and the grinding parts are connected through a bearing 24. The ratchet rod 21 plays a role of supporting and bearing the weight of both the moving member and the grinding member, and also plays a role of locking the rotation of the moving member,

the moving piece comprises an arched rod 22, one end of the arched rod 22 is sleeved on the outer surface of the ratchet rod 21, a pawl 23 is rotatably connected to the side surface of the arched rod 22, and the pawl 23 is clamped on the ratchet rod 21 and used for fixing the arched rod 22 on the outer wall of the ratchet rod 21. One end of the arc rod 22 is sleeved on the outer surface of the ratchet rod 21 and rotates through the end serving as a fulcrum, so that the angle of the handheld end is adjusted, the grinding belt 27 on the side surface of the handheld end is ensured to be in contact with a crankshaft journal, the pawl 23 is pulled upwards to be away from the ratchet rod 21, the arc rod 22 can rotate, and the pawl 23 is pulled downwards to be clamped into the ratchet rod 21 to lock the arc rod 22.

The polishing part comprises a power rod 29 fixed on the side face of the base 11, a first gear 28 is connected to the outer wall of the power rod 29 in a sliding mode, the first gear 28 is meshed with a second gear 26 in a transmission mode, the second gear 26 is fixedly connected with a transmission belt wheel 25, a polishing belt 27 is sleeved on the outer wall of the transmission belt wheel 25, and the other end of the polishing belt 27 is sleeved on a rotating wheel arranged at the handheld end of the bow-shaped rod 22. Power rod 29 includes the second motor and the body of rod, the output shaft fixed connection body of rod of second motor, and drive first gear 28 through the body of rod and rotate, first gear 28 meshing transmission second gear 26 rotates, second gear 26 drives driving pulley 25 and rotates, driving belt drives the area of polishing 27 and rotates and polish, axial spline groove has been seted up to the body of rod outer wall, the spline of first gear 28 inner wall removes along this spline groove, the side of first gear 28 is provided with the step simultaneously and supports through the screw tight piece on this step and hold on the body of rod, accomplish the fixed of first gear 28 at body of rod surface position.

The grinding member is sleeved on the inner ring of the bearing 24, and the moving member is fixed with the outer ring of the bearing 24 through a lantern ring. The grinding part, namely the second gear 26 and the transmission belt wheel 25 are sleeved on the outer wall of the inner ring of the bearing 24, so that the inner ring of the bearing 24 is separated from the bow-shaped rod 22 fixedly connected with the outer ring of the bearing 24, the two are respectively and independently rotated, the mutual influence is avoided, the two are also connected simultaneously, the second gear 26 and the transmission belt wheel 25 are driven to move when the bow-shaped rod 22 is moved, and the influence on the grinding belt 27 caused by the separated movement is avoided.

When the crankshaft grinding machine is used, one end of the starting crankshaft is inserted into the conical piece 15 arranged on the side face of the base 11, the support 13 at the other end of the base 11 is pushed through the air cylinder 12 to move towards the end along the sliding groove 14 until the conical piece 15 on the support 13 is also inserted into the other end of the crankshaft, the conical piece 15 is driven by the first motor 16 to rotate, the conical piece 15 drives the crankshaft to rotate, the grinding direction of the crankshaft is adjusted, and the clamping and grinding angle adjustment of the crankshaft are completed.

Further, the arcuate lever 22 is slid along the ratchet rod 21 and the respective arcuate lever 22 is slid over the respective journal of the lower crankshaft, then the pawl 23 is pulled upward and the pawl 23 is moved away from the ratchet rod 21, the hand-held portion of the arcuate lever 22 is rotated downward until the grinding belt 27 on the side of the arcuate lever 22 contacts the outer surface of the journal of the crankshaft, then the pawl 23 is pressed, the pawl 23 is snapped back onto the ratchet rod 21 to lock the position of the arcuate lever 22, then the position of the respective arcuate lever 22 is adjusted one by one so that the grinding belt 27 on each arcuate lever 22 contacts the journal of the crankshaft, and the respective first gear 28 on the power rod 29 is also positionally moved so that the first gear 28 can engage the second gear 26, then the power rod 29 is actuated, the power rod 29 rotates the respective first gear 28, the rotation of the first gear 28 rotates the second gear 26, second gear 26 rotates and drives driving pulley 25 and rotate, driving pulley 25 drives belt 27 of polishing and rotates, the realization carries out synchronous polishing to each axle journal of bent axle, stop polishing that power rod 29 drove afterwards, and control first motor 16 and rotate, the angle of polishing the bent axle adjustment, and also carry out the adjustment of angle in order to adapt to the bent axle of new angle to each bow-shaped simultaneously, start power rod 29 once more and drive belt 27 and polish the bent axle, so relapse until polishing whole bent axle.

Further, when the area 27 of polishing for setting up to the elasticity belt, because the bent axle of laminating behind the initial adjustment of the area 27 of polishing to only need start power rod 29 and drive the area 27 of polishing and polish, start first motor 16 simultaneously and drive the bent axle and rotate, because the area 27 of polishing is the elasticity formula, thereby along with the automatic loosing of the rotation of bent axle or tighten up, and laminate all the time on the bent axle surface, realize polishing to the bent axle journal.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.