阅读说明：本技术 一种油缸驱动的滑枕结构 (Ram structure driven by oil cylinder ) 是由 何发诚 张召杰 王潇 宋旸 马嗣燕 邓明辉 于 2021-06-30 设计创作，主要内容包括：本发明公开了一种油缸驱动的滑枕结构,包括滑枕、滑座、油缸、上盖,所述滑枕安装在滑座和上盖组成的矩形导轨内,滑座和上盖的导轨为闭式恒流静压导轨,导轨面上安装有静压导轨板,油缸安装在滑枕内,并且油缸的缸体与滑枕固定连接,该油缸的活塞杆的端部穿过滑座并与滑座连接,前述活塞杆的外端面设有两个油孔,其中一个油孔贯穿整个活塞杆,与油缸的无杆腔连通,另一个油孔从活塞杆的端面起,延伸到活塞杆的侧面,与油缸的有杆腔连通。该滑枕由油缸驱动,结构紧凑,驱动力大。(The invention discloses an oil cylinder driven ram structure, which comprises a ram, a sliding seat, an oil cylinder and an upper cover, wherein the ram is arranged in a rectangular guide rail formed by the sliding seat and the upper cover, the guide rail of the sliding seat and the upper cover is a closed constant-current static pressure guide rail, a static pressure guide rail plate is arranged on a guide rail surface, the oil cylinder is arranged in the ram, a cylinder body of the oil cylinder is fixedly connected with the ram, the end part of a piston rod of the oil cylinder penetrates through the sliding seat and is connected with the sliding seat, the outer end surface of the piston rod is provided with two oil holes, one of the oil holes penetrates through the whole piston rod and is communicated with a rodless cavity of the oil cylinder, and the other oil hole extends from the end surface of the piston rod to the side surface of the piston rod and is communicated with a rod cavity of the oil cylinder. The ram is driven by the oil cylinder, and has a compact structure and large driving force.)

1. The utility model provides an oil cylinder driven ram structure which characterized by: the hydraulic cylinder is characterized by comprising a ram, a sliding seat, an oil cylinder and an upper cover, wherein the ram is arranged in a rectangular guide rail formed by the sliding seat and the upper cover, the guide rail of the sliding seat and the guide rail of the upper cover are closed constant-current hydrostatic guide rails, a hydrostatic guide rail plate is arranged on the guide rail surface, the oil cylinder is arranged in the ram, the cylinder body of the oil cylinder is fixedly connected with the ram, the end part of a piston rod of the oil cylinder penetrates through the sliding seat and is connected with the sliding seat, two oil holes are formed in the outer end surface of the piston rod, one oil hole penetrates through the whole piston rod and is communicated with a rodless cavity of the oil cylinder, the other oil hole extends to the side surface of the piston rod from the end surface of the piston rod and is communicated with a rod cavity of the oil cylinder, and the end part of the piston rod is locked with the sliding seat through a locking nut.

2. The ram structure driven by the oil cylinder according to claim 1, characterized in that: the oil cylinder is positioned on the axis of the ram.

3. The ram structure driven by the oil cylinder according to claim 1, characterized in that: the total number of the static pressure guide rail plates is not less than 8, and an oil return gap is reserved between the static pressure guide rail plates.

4. The ram structure driven by the oil cylinder according to claim 1, characterized in that: each static pressure guide rail plate is independently supplied with oil by a hydraulic station.

5. The conservator structure according to claim 1, wherein: and a gasket is arranged at the joint of the piston rod and the sliding seat.

Technical Field

The invention belongs to the field of machine tool equipment, and particularly relates to a ram structure driven by an oil cylinder.

Background

In a machine tool, a ram is used as a moving part for mounting various functional parts. In general, the ram feed structure is: the motor drives the speed reducer to drive the ball screw to drive the ram to feed. However, in heavy and ultra-heavy machine tools, due to the fact that the feeding force is large, the ball screw bears a large load in the feeding process, the service life is short, and the rigidity of the machine tool is affected.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides the ram structure driven by the oil cylinder, and the ram structure is driven by the oil cylinder, so that the structure is compact, and the driving force is large.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an oil cylinder driven ram structure, includes ram, slide, hydro-cylinder, upper cover, the ram is installed in the rectangle guide rail that slide and upper cover are constituteed, the guide rail of slide and upper cover is closed constant current hydrostatic guideway, install the hydrostatic guideway board on the guide rail surface, the hydro-cylinder is installed in the ram to the cylinder body and the ram fixed connection of hydro-cylinder, the tip of the piston rod of this hydro-cylinder passes the slide and is connected with the slide, the outer terminal surface of aforementioned piston rod is equipped with two oilholes, one of them oilhole runs through whole piston rod, with the rodless chamber intercommunication of hydro-cylinder, another oilhole is from the terminal surface of piston rod, extend to the side of piston rod, with the pole chamber intercommunication that has of hydro-cylinder.

In the technical scheme, the oil cylinder is positioned on the axis of the ram.

In the technical scheme, the ram and the upper cover are connected through the screw.

In the technical scheme, the total number of the static pressure guide rail plates is not less than 8, and oil return gaps are reserved among the static pressure guide rail plates.

In the technical scheme, the static pressure guide rail plates are independently supplied with oil by the hydraulic station.

In the technical scheme, a gasket is arranged at the joint of the piston rod and the sliding seat.

In the above technical solution, the end of the piston rod is locked with the slide seat by a lock nut

The invention has the beneficial effects that: the ram is driven to feed by the oil cylinder, so that the ram can bear large load, and the ram has great advantages in feeding force and service life; the oil cylinder is arranged in the ram and is positioned on the axis of the ram, and is driven by zero offset load moment, the external guide rail surface of the ram is not influenced, and the running rigidity of the ram is improved; the oil cylinder transmits driving force through a fixed piston rod, and the rigidity is high; the ram running guide rail is of a four-side closed type, so that the stability is good; the guide rail is in a closed constant-current hydrostatic guide rail form and has high rigidity.

Drawings

Fig. 1 is a schematic sectional structure of the present invention.

FIG. 2 is a cross-sectional view of a ram rail

Wherein: 1. the hydraulic station comprises a ram, an oil cylinder 2, a piston rod 3, a cylinder body 4, a sliding seat 5, a gasket 6, a locking nut 7, a rod cavity 8, a rod-free cavity 9, a static pressure guide rail plate 10, an upper cover 11, oil holes A12, oil holes B13 and a static pressure system hydraulic station 14.

Detailed Description

The invention is further described with reference to the following figures and specific embodiments.

The ram structure of an oil cylinder drive as shown in fig. 1 comprises a ram 1, a sliding seat 5, an oil cylinder 2 and an upper cover 11, wherein the ram 1 is installed in a rectangular guide rail formed by the sliding seat 5 and the upper cover 11, the oil cylinder 2 is installed in the ram 1, a cylinder body 4 of the oil cylinder 2 is fixedly connected with the ram 1, the end part of a piston rod 3 of the oil cylinder 2 penetrates through the sliding seat 5 and is connected with the sliding seat 5, the outer end surface of the piston rod 3 is provided with two oil holes, namely an oil hole a12 and an oil hole B13, an oil hole B13 penetrates through the whole piston rod and is communicated with a rodless cavity 9 of the oil cylinder 2, and an oil hole a12 extends from the end surface of the piston rod 3 to the side surface of the piston rod 3 and is communicated with a rod cavity 8 of the oil cylinder 2. Static pressure guide rail plates 10 are respectively arranged on the guide rail surfaces of the sliding seat 5 and the upper cover 11, and the static pressure guide rail plates 10 play a role in restraining and guiding the ram 1.

In the technical scheme, the oil cylinder 2 is positioned on the axis of the ram 1.

In the above technical solution, a gasket 6 is disposed at a connection position of the piston rod 3 and the sliding seat 5.

In the above technical solution, the end of the piston rod 3 is locked with the slide carriage 5 by the lock nut 7.

In the technical scheme, the total number of the static pressure guide rail plates 10 is not less than 8, and oil return gaps are reserved among the guide rail plates.

In the technical scheme, each static pressure guide rail plate 10 is independently supplied with oil by the static pressure system hydraulic station 14.

When oil enters the oil hole A12 and exits from the oil hole B13, the volume of the rod cavity 8 of the oil cylinder 2 is increased, and the cylinder body 4 is pushed to drive the ram 1 to retreat; when the oil hole B13 takes in oil and the oil hole A12 takes out oil, the volume of the rodless cavity 9 of the oil cylinder 2 is increased, the cylinder body 4 is pushed to drive the ram 1 to extend out, and the feed motion of the ram is realized.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.