CN201815871U

CN201815871U - Composite guide rail

Info

Publication number: CN201815871U
Application number: CN 201020169363
Authority: CN
Inventors: 梁伟明; 徐林波; 顾思跃; 王姜仁
Original assignee: Ningbo Haitian Precision Machinery Co Ltd
Current assignee: Ningbo Haitian Precision Machinery Co Ltd
Priority date: 2010-04-23
Filing date: 2010-04-23
Publication date: 2011-05-04
Anticipated expiration: 2020-04-23

Abstract

The utility model relates to a composite guide rail, which comprises a cross beam (1), wherein the top surface and the front side of the cross beam (1) are respectively provided with an upper pin roller guide rail (3) and a lower pin roller guide rail (8), the guide rails have no micro displacement relative to the base level of the cross beam respectively by pressure blocks (2), a ball screw (5) is arranged in the middle of the cross beam, the cross beam (1) is provided with a gib (6) and an adjusting screw (7) between the upper pin roller guide rail (3) and the lower pin roller guide rail (3) to form a sliding guide rail pair, and the upper pin roller guide rail (3) and the lower pin roller guide rail (8) are provided with a horizontal adjusting device (4) and a vertical adjusting device (9) of a sliding saddle. The composite guide rail greatly improves the flexibility of relative movement between the cross beam and the sliding saddle, the rigidity, the shock-proof capacity, the load bearing capacity and the moment resisting capacity; and the composite guide rail is simple and reliable, and moving parts respond sensitively, have strong rigidity and good shock absorbing performance, and meet the needs of different processing environments such as heavy cutting, finish machining and the like.

Description

Composite guide rails

Technical field

The utility model belongs to the Digit Control Machine Tool field of components, particularly relates to a kind of guide rail.

Background technology

The most important performance characteristic of lathe is exactly precision, rigidity, stability and service life.And guide rail is in important position to Effect on Performance always, present technology of Machine Tool field, there is multiple new structure to occur, as from the extensive use of spherical guide, roller guide several years ago, inlay strip structure, new working media and the research of lubriation material to up-to-date automatic adjustment degree of tightness, gap.As the guide rail of machine tool functional component, the structure which type of selects for use is being brought into play very important effect to realizing lathe function.

Guide rail must have higher guiding accuracy, high rigidity, high-wearing feature, characteristic such as lathe does not vibrate when high speed feed, do not creep during the low speed feeding.The guide rail of Digit Control Machine Tool use at present mainly contains 3 kinds: plastics rail plate, rolling guide and hydrostatic slideway.

1, plastics rail plate

At present, the employed rail plate material of Digit Control Machine Tool is a cast iron to plastics or edge steel to the plastics rail plate.Guide rail plastics polytetrafluoroethylene (PTFE) guide-soft-band commonly used and wear-resisting guide rail coating two classes of epoxy type.

(1) characteristics of polytetrafluoroethylene (PTFE) guide-soft-band

1) frictional behavior is good: the sound friction factor of metal-polytetrafluoroethylene (PTFE) guide-soft-band is constant substantially.

2) antiwear characteristic is good:

3) vibration damping is good: the damping capacity of plastics is good, and the better performances of its effectiveness in vibration suppression, noise elimination helps improving movement velocity.

4) good manufacturability: can reduce hardness and surface quality requirement, and plastics are easy to processing (mill, dig,, scrape), make the good surface quality of guideway contact-making surface acquisition to the metallic matrix of pasting plastics.

But rail plate is not lubricated smooth, and load is more greatly the phenomenon that may occur creeping, so the polytetrafluoroethylene (PTFE) guide-soft-band is widely used in the motion guide rail of middle-size and small-size Digit Control Machine Tool.

2. rolling guide

(1) structure of straight-line rolling guide set and characteristics rolling guide have following characteristics as a class of rolling friction pair: 1. friction factor little (0.003-0.005), motion are flexibly; 2. dynamic and static friction factor is basic identical, thereby starting reactance is little, creeps and be difficult for producing; 3. can pretension, the rigidity height; 4. the life-span is long; 5. precision height; 6. lubricated convenient, can adopt grease lubrication, once to load, oil lubrication also can be adopted regularly, quantitatively be carried out to long-term the use; 7. produce by the special manufacturer, can outsourcing select for use.Therefore rolling guide-rail pairs is widely used on precision machine tool, Digit Control Machine Tool and the measuring machine.

The major defect of rolling guide-rail pairs is that the ability of resistance to shock loads and antidetonation is relatively poor, and rolling guide-rail pairs is responsive to dust bits end etc., and the favorable protection cover should be arranged.

3. hydrostatic slideway

To be the fluid that will have a certain pressure be transported to the oil pocket of guide pass through flow controller to hydrostatic slideway, forms the carrying oil film, and the metal surface that is in contact with one another is separated, and realizes fluid friction.The friction factor of this guide rail little (about 0.0005), the mechanical efficiency height: owing between guide pass one deck oil film is arranged, absorbing is good; Guide pass is not in contact with one another, and can not wear and tear, and the life-span is long, and operation also is difficult for producing creeping under low speed.

But the hydrostatic slideway complex structure, the pressure adjustment bothers relatively, and is that higher to the lathe requirement of shelter, total manufacturing cost is higher.

Summary of the invention

Technical problem to be solved in the utility model provides a kind of simple, reliable, make moving-member not only respond sensitivity, and rigidity is strong, and shock absorption is good, satisfies the composite guide rails of different processing environment needs such as heavy cut and fine finishining.

A kind of composite guide rails, comprise crossbeam, the end face of described crossbeam and front side are equipped with roller guide respectively and ball screw is equipped with in following roller guide, centre, the described roller guide of going up is equipped with briquetting and saddle level(l)ing device, following roller guide is equipped with the vertical adjusting device, filler rod also is housed between last roller guide and following roller guide on the described crossbeam and adjusts screw composition rail plate pair.

Described saddle level(l)ing device and vertical adjusting device are adjusting pad.

Described rail plate pair is made of filler rod and adjustment screw.

Beneficial effect

The utility model crossbeam will relatively move with saddle, effectively utilized and be the function that the linear roller guide of the big specification of vertically arranged two groups is born guiding, off-load and born live load, ball-screw transmits moment of torsion, and uses the filler rod between two roller guides and adjust secondary vibration resistance, rigidity and the operating load ability of strengthening of rail plate that screw is formed.With vertically arranged linear roller guide rail is that the basis adds filler rod and adjusts the secondary composite guide rails of forming of rail plate that screw is formed, and improves sensitivity, rigidity, antivibration power, load force and the bending resistance square ability of relative motion between crossbeam and the saddle greatly; So the utility model is simple, reliable, make moving-member not only respond sensitivity, and rigidity is strong, shock absorption is good, satisfies the needs of different processing environments such as heavy cut and fine finishining.

Description of drawings

Fig. 1 is the utility model structural representation.

The specific embodiment

Below in conjunction with specific embodiment, further set forth the utility model.Should be understood that these embodiment only to be used to the utility model is described and be not used in the restriction scope of the present utility model.Should be understood that in addition those skilled in the art can make various changes or modifications the utility model after the content of having read the utility model instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

Embodiment 1

As shown in Figure 1, a kind of composite guide rails, comprise crossbeam 1, the end face of crossbeam 1 and front side be equipped with respectively roller guide 3 and, roller guide 8 down, roller screw mandrel 5 is equipped with in the centre, filler rod 6 also is housed between last roller guide 3 and following roller guide 8 on the described crossbeam 1 and adjusts screw 7, described going up on roller guide 3 and the following roller guide 8 is equipped with briquetting 2 and adjusting pad 4.

The composite guide rails installation steps are as follows:

1) with crossbeam 1 horizontal positioned, adjusts level, guide rail is placed on the side group face of datum level near the lathe assembly surface, aim at screw, upper rail is fixed with bolt lightly;

2) tighten the briquetting 2 of guide rail side, make the guide rail reference side tightly by pasting the side of crossbeam;

3) press the reference value of guide rail producer and screw moment, tighten the mounting screw of guide rail with torque spanner; Begin to tighten to two ends from the centre by chi sequence.Another group guide rail according to said method is installed;

4) after guide rail installs, with regard to trial assembly saddle 10, with adjusting pad 4 repairs, make lathe each can both be vertical mutually, and respectively organize smooth and easy being screwed into of line rail top shoe screw energy;

5) about filler rod 6 has each one, scrape contact-making surface, have sufficient contact area and count after, go processing oil groove, with the adjustment screw 7 adjust to suitable elasticity;

6) connect lubricatedly, treat that other parts finish, test-run a machine is seen motor load situation and the cutting vibration situation that this is axial, adjusts the degree of tightness of filler rod 6, guarantees must not filling in of 0.02mm.

Claims

1. composite guide rails, comprise crossbeam (1), it is characterized in that: roller guide (3) is housed respectively for the end face of described crossbeam (1) and front side and ball screw (5) is equipped with in following roller guide (8), centre, the described roller guide (3) of going up is equipped with briquetting (2) and saddle level(l)ing device (4), following roller guide (8) is equipped with vertical adjusting device (9), is positioned on the described crossbeam (1) filler rod (6) also to be housed between roller guide (3) and the following roller guide (8) and to adjust screw (7) composition rail plate pair.

2. composite guide rails as claimed in claim 1 is characterized in that: described saddle level(l)ing device (4) and vertical adjusting device (9) are adjusting pad.

3. composite guide rails as claimed in claim 1 or 2 is characterized in that: described rail plate pair is by filler rod (6) and adjust screw (7) formation.