阅读说明：本技术 一种采用线性滚动单元导轨的加工中心主轴箱结构 (Machining center spindle box structure adopting linear rolling unit guide rail ) 是由 谯川 姜庆凯 董威 常亮 高天翔 杜洪亮 卢童川 李卓伦 于 2021-09-01 设计创作，主要内容包括：本发明涉及一种采用线性滚动单元导轨的加工中心主轴箱结构,数控机床主轴箱技术领域。一种采用线性滚动单元导轨的加工中心主轴箱结构,包括安装在加工中心立柱上的钢导轨以及通过滚动导轨单元与钢导轨配合的主轴箱体；主轴箱体设有两条矩形宽幅式安装凹腔,滚动导轨单元设置在安装凹腔内；滚动导轨单元包括正向滚动导轨单元、侧向滚动导轨单元及反向滚动导轨单元,各滚动导轨单元包括导轨体及调整块等构成,且导轨体背面设有调整垫片；本发明主轴箱与加工中心立柱上的钢导轨采用矩形宽幅导轨形式,可获得更大的导轨刚性；在辅以滚动导轨单元实现导轨的高运动速度、高动态响应和灵敏度。(The invention relates to a machining center spindle box structure adopting a linear rolling unit guide rail, and belongs to the technical field of spindle boxes of numerical control machines. A machining center spindle box structure adopting a linear rolling unit guide rail comprises a steel guide rail arranged on a machining center upright post and a spindle box body matched with the steel guide rail through a rolling guide rail unit; the main shaft box body is provided with two rectangular wide installation concave cavities, and the rolling guide rail units are arranged in the installation concave cavities; the rolling guide rail unit comprises a forward rolling guide rail unit, a lateral rolling guide rail unit and a reverse rolling guide rail unit, each rolling guide rail unit comprises a guide rail body, an adjusting block and the like, and an adjusting gasket is arranged on the back of the guide rail body; the spindle box and the steel guide rail on the upright post of the machining center adopt a rectangular wide guide rail form, so that higher guide rail rigidity can be obtained; the rolling guide rail unit is assisted to realize high movement speed, high dynamic response and high sensitivity of the guide rail.)

1. The utility model provides an adopt machining center headstock structure of linear rolling unit guide rail, includes steel guide (2) of installing on machining center stand (1) and through rolling guide unit and steel guide (2) complex main shaft box (3), its characterized in that:

the main shaft box body (3) is provided with two rectangular wide installation concave cavities, and the rolling guide rail units are arranged in the installation concave cavities;

each installation cavity all includes: a front cavity and a side cavity;

the rolling guide unit includes: the device comprises a forward rolling guide rail unit, a lateral rolling guide rail unit and a reverse rolling guide rail unit;

the forward rolling guide unit includes: a first guide rail body (4) and a first adjusting block (5); the first guide rail body (4) and the first adjusting block (5) are combined and then are arranged in the cavity on the front surface;

the lateral rolling guide unit includes: a second guide rail body (6) and a second adjusting block (7); the second guide rail body (6) and the second adjusting block (7) are combined and then are arranged in the side cavity and are pressed by the baffle plate (8);

the reverse rolling guide unit includes: a third rail body (12) and a third adjusting block (9); the third guide rail body (12) and the third adjusting block (9) are combined and then are arranged on the mounting plate (10); the mounting plate (10) is connected with the spindle box body (3) through bolts and arranged opposite to the forward rolling guide rail unit.

2. The spindle box structure of a machining center using a linear rolling unit guide rail according to claim 1, wherein: the back surfaces of the first guide rail body (4), the second guide rail body (6) and the third guide rail body (12) are respectively provided with an adjusting gasket (11).

3. The spindle box structure of a machining center using a linear rolling unit guide rail according to claim 2, wherein: the adjusting gasket (11) adopts a detachable end face structure.

4. The structure of a machining center headstock using a linear rolling unit guide according to claim 1 or 2, wherein: the guide rail body (2) is an alloy steel guide rail body.

5. The structure of a machining center headstock using a linear rolling unit guide according to claim 1 or 2, wherein: the rolling guide rail unit is provided with a lubricating pipeline.

Technical Field

The invention relates to a spindle box structure of a machining center, in particular to a spindle box structure of a machining center adopting a linear rolling unit guide rail, and belongs to the technical field of spindle boxes of numerical control machine tools.

Background

The main shaft box is an important basic part for bearing a main shaft part of the numerical control vertical machining center, and the main shaft part is borne by the main shaft box and moves up and down on the upright post to realize required Z-axis movement. In the machining center structure, the performance of the spindle box is an important factor influencing the machining quality, and the performance of a guide rail between the spindle box and the upright post is an important factor influencing the performance of the spindle box.

In the prior art, the form of the guide rail between the spindle box and the upright post of the vertical machining center mainly has two forms of a sliding guide rail and a linear rolling guide rail:

the sliding guide rail has the characteristics that the cross section of the guide rail is large in size, high in contact rigidity and suitable for heavy cutting; the defects are that the manufacture is complex, the difference of the dynamic and static friction coefficients of the guide rails is large, the creeping is easy to generate under the low-speed movement, the processing precision is influenced, and the guide rails are not suitable for the high-speed movement;

the linear rolling guide rail has the characteristics of small friction coefficient of the guide rail, sensitive instruction response, suitability for high-speed movement and convenient use, and has the defects of small section size of the rolling guide rail, weak integral rigidity of the guide rail and unsuitability for heavy cutting processing.

Therefore, it is always necessary in the art to realize a spindle box structure of a machining center, which has high rigidity, low friction coefficient, sensitive command response and is suitable for high-speed movement.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides a machining center spindle box structure adopting a linear rolling unit guide rail, which not only keeps the high rigidity characteristic of a wide sliding guide rail, but also combines the advantages of low friction coefficient, sensitive response and suitability for high-speed motion of the linear rolling guide rail.

In order to achieve the technical purpose, the invention adopts the following technical scheme:

a machining center spindle box structure adopting a linear rolling unit guide rail comprises a steel guide rail arranged on a machining center upright post and a spindle box body matched with the steel guide rail through a rolling guide rail unit, so that the spindle box and the steel guide rail on the machining center upright post form a rectangular wide guide rail form;

the main shaft box body is provided with two rectangular wide installation concave cavities, and the rolling guide rail units are arranged in the installation concave cavities;

each installation cavity all includes: a front cavity and a side cavity;

the rolling guide unit includes: the device comprises a forward rolling guide rail unit, a lateral rolling guide rail unit and a reverse rolling guide rail unit;

the forward rolling guide unit includes: a first guide rail body and a first adjusting block; the first guide rail body and the first adjusting block are combined and then are arranged in the front cavity;

the lateral rolling guide unit includes: a second guide rail body and a second adjusting block; the second guide rail body and the second adjusting block are combined and then are arranged in the side surface concave cavity and are pressed tightly by the baffle plate;

the reverse rolling guide unit includes: a third guide rail body and a third adjusting block; the third guide rail body and the third adjusting block are combined and then are arranged on the mounting plate; the mounting plate is connected with the main spindle box body through bolts and arranged opposite to the forward rolling guide rail unit.

Preferably, the back surfaces of the first guide rail body, the second guide rail body and the third guide rail body are provided with adjusting gaskets.

Preferably, the adjusting gasket is of a detachable end face structure.

Preferably, the guide rail body is an alloy steel guide rail body.

Preferably, the rolling guide rail unit is provided with a lubrication pipeline.

Compared with the prior art, the invention has the beneficial effects that:

1. the main spindle box and the steel guide rail on the upright post of the machining center adopt a rectangular wide guide rail form, so that higher guide rail rigidity can be obtained; the rolling guide rail unit is used for realizing high movement speed, high dynamic response and sensitivity of the guide rail;

2. the reverse rolling guide rail unit adopts a mounting plate structure, so that the disassembly is realized, and the mounting is convenient;

3. the back of each guide rail body is provided with the adjusting gasket, so that the installation precision of the rolling guide rail unit is ensured; the adjusting gasket adopts a detachable end face structure, so that convenience is provided for maintenance and installation;

in conclusion, the machining center spindle box structure adopting the linear rolling unit guide rail provided by the invention meets the requirements of high rigidity, low friction coefficient, sensitive instruction response and suitability for high-speed movement.

Drawings

FIG. 1 is a schematic diagram of a three-dimensional structure of the numerical control vertical machining center;

FIG. 2 is a schematic structural view of the spindle box;

FIG. 3 is an enlarged view of a portion of FIG. 2;

FIG. 4 is a schematic bottom view of the headstock;

fig. 5 is a sectional view taken along line a-a in fig. 4.

The device comprises a machining center upright post, a 2-steel guide rail, a 3-spindle box body, a 4-first guide rail body, a 5-first adjusting block, a 6-second guide rail body, a 7-second adjusting block, an 8-blocking piece, a 9-third adjusting block, a 10-mounting plate, an 11-adjusting gasket and a 12-third guide rail body.

Detailed Description

The preferred embodiments of the present invention are provided in the following description with reference to the accompanying drawings, which are only preferred embodiments of the present invention, and certainly do not limit the scope of the invention.

Referring to fig. 1, a machining center spindle box structure using a linear rolling unit guide rail includes a steel guide rail 2 mounted on a machining center column 1 and a spindle box body 3 matched with the steel guide rail 2 through a rolling guide rail unit, so that the spindle box and the steel guide rail 2 on the machining center column 1 form a rectangular wide guide rail form, and greater guide rail rigidity can be obtained; the steel guide rail 2 is made of high-hardness alloy steel, so that the bearing capacity is strong, and the rigidity is sufficient;

referring to fig. 2, the main spindle box 3 is provided with two rectangular wide mounting cavities, and four groups of rolling guide rail units are arranged in the mounting cavities; the mounting concave cavities comprise front concave cavities and side concave cavities, and the positioning and bearing of the side concave cavities adopt a wide positioning mode so as to minimize the overall size of the spindle box;

referring to fig. 3, each group of rolling guide rail units includes a forward rolling guide rail unit, a lateral rolling guide rail unit, and a reverse rolling guide rail unit;

the forward rolling guide unit includes: a first rail body 4 and a first adjusting block 5; the first guide rail body 4 and the first adjusting block 5 are combined and then are arranged in the cavity on the front surface;

the lateral rolling guide unit includes: a second rail body 6 and a second adjusting block 7; the second guide rail body 6 and the second adjusting block 7 are combined and then are arranged in the side cavity and are pressed by the baffle plate 8;

the reverse rolling guide unit includes: a third rail body 12 and a third adjusting block 9; the third guide rail body 12 and the third adjusting block 9 are combined and then arranged on the mounting plate 10; the mounting plate 10 is bolted to the main spindle housing 3 and is disposed opposite to the forward rolling guide unit.

Referring to fig. 4 and 5, preferably, the back surfaces of the first guide rail body 4, the second guide rail body 6 and the third guide rail body 12 are respectively provided with an adjusting gasket 11, and the adjusting gaskets 11 are of end surface detachable structures; the assembling precision of the spindle box is adjusted by matching grinding and scraping the adjusting gasket, the arrangement of the adjusting gasket ensures the mounting precision of the rolling guide rail unit, and meanwhile, the convenience of mounting and maintenance is realized; the adjusting gasket arranged on the back of the second guide rail body 6 can also be matched with the pre-pressure of the lateral rolling guide rail unit;

preferably, the rail body 2 is an alloy steel rail body.

Preferably, each group of rolling guide rail units is provided with a lubricating pipeline for timing oil pumping and lubrication.

Has the advantages that:

due to the adoption of the rolling guide rail unit structure, the advantages of high speed and high dynamic response of the linear rolling guide rail are obtained; the rectangular wide guide rail structure is adopted, so that the advantage of high rigidity of the sliding guide rail is obtained; the independent and replaceable high-rigidity alloy steel guide rail body ensures higher precision, long service life and easy maintenance of the guide rail.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation.

Although particular implementations of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.