CN203765438U

CN203765438U - Nylon ultra-precision guide roller

Info

Publication number: CN203765438U
Application number: CN201420008759.XU
Authority: CN
Inventors: 沈文亮; 宋晓颖
Original assignee: SHANGHAI GENERAL BEARING CO Ltd
Current assignee: SHANGHAI GENERAL BEARING CO Ltd
Priority date: 2014-01-07
Filing date: 2014-01-07
Publication date: 2014-08-13
Anticipated expiration: 2024-01-07

Abstract

The utility model discloses a nylon ultra-precision guide roller. The nylon ultra-precision guide roller comprises the following manufacturing steps of machining a guide roller core body, and reserving lathe machining allowance in positions of main journals of installation bearings of a left core shaft and a right core shaft, wherein the guide roller core body comprises the left core shaft, the right core shaft and an intermediate core shaft with a hollow structure; connecting the left core shaft, the right core shaft and the intermediate core shaft into a whole through welding, and thus forming an integral guide roller billet piece assembly; casting nylon glass fiber at the periphery of the intermediate core shaft, and thus forming a nylon glass fiber layer at the periphery of the intermediate core shaft; precisely turning the installation size of journals in all grades of the left core shaft and the right core shaft, and reserving grinding allowance; grinding and machining the size of each section of the guide roller according to design requirements; turning the nylon glass fiber layer according to type requirements for forming needed threads, and obtaining a finished ultra-precision guide roller. According to the nylon ultra-precision guide roller disclosed by the utility model, the hollow structure is adopted by the intermediate core shaft, thus the whole weight of the guide roller is reduced, and the maintenance is convenient; an expensive thread grinding machine is replaced by a lathe, the machining time is reduced, the machining efficiency is increased, the machining cost is reduced, and the management is convenient.

Description

Nylon superfinishing deflector roll

Technical field

The utility model relates to a kind of deflector roll, especially a kind of nylon superfinishing deflector roll.

Background technology

For improving the precision of roller, roller superfinishing is first-selected, and will realize roller superfinishing, and superfinishing deflector roll is absolutely necessary.Superfinishing deflector roll is generally the machining manufacture adopting taking steel as material at present, and the original left side adopting of deflector roll blank, it is with 4 screws and two taper pins that right mandrel connects with middle mandrel, in use, there will be the shape of superfinishing product, circularity has the situation of destruction, the axiality of the bearing gear of deflector roll is overproof, there are indivedual screws and taper pin to have loosening simultaneously, this is not strike vibrations and collision dead or carrying in assembling to cause, therefore there is unreliable factor in thread connection, this can cause great hidden danger to the quality of product, assembly structure must improve for this reason.When with steel deflector roll, because of the deadweight of itself, in the time of assembling, need to use a dead lift, cause so reel unavoidably to damage and reprocess.In addition, the middle mandrel of invar deflector roll is also to adopt its helicitic texture of grinding, and carries out on screw grinder, and a general cutter grinding stock is at 0.05mm, and band backlash car once needs 15 minutes; Carry out in actual process at the deflector roll blank that is material to steel, because deflector roll length is long and thickness is thicker, after often quenching, do not reach the hardness requirement of HRC60, and in process, also need to adopt screw grinder equipment to carry out grinding, this can not ensure on process time; Because of deflector roll angle require high, so data in design, on measuring and aspect actual characteristic, generation deviation is error unavoidably, eliminate this error, must after debugging, could determine, the finished product after processing will carry out repair according to the deviation error of data in the time of debugging, and ordinary circumstance needs 2 to 3 repairs just can complete, this will waste a large amount of time, makes troubles to production.Just need to improve the manufacturing process of deflector roll for this reason, simplify between the man-hours such as manufacturing procedure, minimizing, to improve working (machining) efficiency and to cut down finished cost.

Utility model content

The purpose of this utility model is to provide a kind of nylon superfinishing deflector roll, both can meet the performance of product design requirement, can simplify again between the man-hour such as manufacturing procedure, minimizing to improve working (machining) efficiency, to cut down finished cost.

Provide a kind of nylon superfinishing deflector roll according to the utility model, comprising: the middle mandrel of being made up of steel, left mandrel, right mandrel are by the deflector roll steel billet assembly being welded, the nylon glass fibrage that casts in middle mandrel periphery; Wherein, middle mandrel is to process stepped hole by a hollow pipe at its two ends to form, left mandrel and right mandrel two ends are formed with the cylinder flange matching with the stepped hole at middle mandrel two ends, and be welded and fixed with the two ends of middle mandrel respectively at the relative shaft shoulder end face of cylinder flange, to be combined into described deflector roll steel billet assembly, described deflector roll steel billet assembly forms screw thread by fine finishining and makes the trunnion of left and right mandrel reach design accuracy on described nylon glass fibrage.

The glass fibre that described nylon glass fibrage is contain+10%-15% of matrix by nylon forms.

The utility model substitutes steel to the processing part of middle mandrel with the nylon glass fiber of nonmetallic materials, replaces grinding and has improved the method for original assembling mandrel: left and right mandrel is connected with middle mandrel use instead to weld and carry out firmly gun iron link with turning; Guarantee under the prerequisite of concentric tolerance of single-piece at left and right mandrel and middle mandrel assembling mating surface, need Grinding Size to reserve enough surpluses first each section of left and right mandrel welding, to guarantee to have the car grinding allowance of enough elimination welding deformations after welding; While considering cast nylon glass fibrage, with the fastness that is connected of middle mandrel, have 2～3mm wide on the surface of middle mandrel, the screw thread of the 1mm degree of depth, makes to pour into a mould nylon and is connected as a single entity reliably.; After cast nylon glass fibrage completes, to the nylon glass fibrage external diameter of cast, and each section of size of left and right mandrel machine, and grind processing by designing requirement, to ensure that the concentricity of each section comprises the concentricity that bearing section is installed, to complete deflector roll blank, and according to different models, design corresponding thread groove, pitch, angle requires nylon glass pars fibrosa to carry out turning, can reach the designing requirement of product.In addition, it is hollow-core construction that the middle mandrel of deflector roll adopts, and deflector roll overall weight is reduced greatly, is convenient to carrying.

In a word, the utility model adopts the middle mandrel of hollow-core construction that the overall weight of deflector roll is reduced greatly, is convenient to repair; Simplify process equipment, substituted expensive screw grinder with existing lathe, saved the time of processing, improved the benefit of processing, reduced the cost of processing and be convenient to management, can be extended on superfinishing equipment.

Brief description of the drawings

Fig. 1 is the structure chart of the nylon superfinishing deflector roll assembly of an embodiment of the utility model;

Fig. 2 is the structure chart of the guide roller core shaft assembly in nylon superfinishing deflector roll assembly embodiment illustrated in fig. 1;

Fig. 3 is that in the middle of the deflector roll in Fig. 2, the master of mandrel looks cutaway view;

Fig. 4 is the front view of the left mandrel of deflector roll in Fig. 2;

Fig. 5 is the front view of the right mandrel in Fig. 2.

Detailed description of the invention

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is elaborated.First it should be noted that, the utility model is not limited to following detailed description of the invention, the spirit that those skilled in the art should embody from following embodiment is understood the utility model, and each technical term can be done the most wide in range understanding based on Spirit Essence of the present utility model.In figure, same or analogous member uses the same reference numerals to represent.

As shown in Figure 1, a kind of nylon superfinishing deflector roll 10 of an embodiment of the utility model, comprise: the middle mandrel 3 be made up of steel, left mandrel 1, right mandrel 2, by the deflector roll steel billet assembly 10a being welded, also comprise the nylon glass fibrage 4 on mandrel 3 periphery face of cylinder C in the middle of casting in, wherein, intermediate core 3, that the cylindrical steel tube that has an inner via hole 3c by a hollow pipe processes stepped hole 3a at its two ends as shown in Figure 3, 3b forms, left mandrel 1 and right mandrel 2, respectively as Fig. 3, Fig. 4, shown in Fig. 5, its two relative ends are formed with the stepped hole 3a with middle mandrel two ends, the cylinder flange 1a that 3b matches, 2a, and at cylinder flange 1a, the shaft shoulder end face 1a ' that 2a is relative, the chamfering 1a that 2a ' processes by end face as shown in the figure with the two ends of middle mandrel 3 respectively ", 2a ", 3a " be welded and fixed, as Fig. 1, shown in Fig. 2, to be combined into deflector roll steel billet assembly 10a, deflector roll steel billet assembly 10a forms screw thread 5 on nylon glass fibrage 4 by fine finishining, as shown in Figure 1, and make a left side, right mandrel 1, 2 trunnion 1b, 2b reaches design accuracy.

The manufacture method of above-mentioned nylon superfinishing deflector roll of the present utility model, comprises the following steps:

Processing deflector roll core body, comprises left mandrel 1, right mandrel 2 and middle mandrel 3, respectively as shown in Figures 3 to 5, and in the reserved Vehicle Processing surplus of putting 3mm in bearings mounted trunnion 1b, the 2b place of left mandrel 1, right mandrel 2;

Left mandrel 1, right mandrel 2 and middle mandrel 3 are integrated by being welded to connect, as shown in Figure 2, to form an overall deflector roll steel blank assembly 10a;

At the periphery face of cylinder of middle mandrel 3 C nylon monomer-cast nylon glass fibre, this nylon glass fiber is the glass fibre of contain taking nylon as matrix+10%-15%, to form nylon glass fibrage 4 in middle mandrel 3 peripheries;

By each grade of axle journal of the left and right mandrel of installation dimension finish turning, and stay 0.3mm surplus;

By each section of size of designing requirement mill pin processing deflector roll assembly 10;

According to model requirement, turning nylon glass fibrage 4, to form required screw thread 5, obtains finished product superfinishing deflector roll.

In the middle of being also included in before middle mandrel 3 periphery nylon monomer-cast nylon glass layers 4, the Surface Machining 2～3mm of mandrel 3 is wide, the screw thread (not shown) of the 1mm degree of depth.

It is the thread groove corresponding according to different models that nylon glass fibrage 4 is carried out to turning, pitch, and angle requires to implement, to reach the designing requirement of product.

As shown in the above description, the utility model substitutes steel to the processing part of middle mandrel 3 with the nylon glass fiber of nonmetallic materials, replaces grinding and has improved the method for original assembling guide roller core axle assembly 10a: left and right mandrel 1,2 is connected with middle mandrel 3 use instead to weld and carry out firmly gun iron link with turning; Guarantee under the prerequisite of concentric tolerance of single-piece at left and right mandrel 1,2 and the assembling mating surface of middle mandrel 3, need Grinding Size to reserve enough surpluses first each section of left and right mandrel welding, to guarantee to have the car grinding allowance of enough elimination welding deformations after welding; While considering cast nylon glass fibrage 4, with the fastness that is connected of middle mandrel 3, have 2～3mm wide at the cylindrical surface of middle mandrel 3 peripheries, the screw thread of the 1mm degree of depth, makes to pour into a mould nylon and is connected as a single entity reliably.; After cast nylon glass fibrage 4 completes, to the nylon glass fibrage external diameter of cast, and left and right mandrel 1,2 each sections of sizes machine, and by designing requirement, 1,2 each sections of left and right mandrels are carried out to grinding, to ensure that the concentricity of each section comprises the concentricity that bearing section 1b, 2b are installed, to complete deflector roll blank 10a, and according to different models, design corresponding thread groove, pitch, angle requires nylon glass fibrage 4 parts to carry out turning, can reach the designing requirement of product, obtains required nylon superfinishing deflector roll 10.In addition, it is hollow-core construction that the middle mandrel 3 of deflector roll adopts, and deflector roll 10 overall weight are reduced greatly, is convenient to carrying.

Should be understood that those skilled in the art can make various changes or modifications the utility model after having read above-mentioned instruction content of the present utility model, these equivalent form of values fall within the application's appended claims limited range equally.

Claims

1. a nylon superfinishing deflector roll, comprising: the middle mandrel of being made up of steel, left mandrel, right mandrel, by the deflector roll steel billet assembly being welded, is characterized in that, also comprise the nylon glass fibrage of mandrel periphery in the middle of casting in; Wherein, middle mandrel is to process stepped hole by a hollow pipe at its two ends to form, left mandrel and right mandrel two ends are formed with the cylinder flange matching with the stepped hole at middle mandrel two ends, and be welded and fixed with the two ends of middle mandrel respectively at the relative shaft shoulder end face of cylinder flange, to be combined into described deflector roll steel billet assembly, described deflector roll steel billet assembly forms screw thread by fine finishining and makes the trunnion of left and right mandrel reach design accuracy on described nylon glass fibrage.

2. nylon superfinishing deflector roll according to claim 1, is characterized in that, the glass fibre that described nylon glass fibrage is contain+10%-15% of matrix by nylon forms.