阅读说明：本技术 斜床身双主轴数控车床 (Inclined-lathe-bed double-spindle numerical control lathe ) 是由 汪博强 汪传宏 汪洋 王小玲 饶贝宁 于 2019-11-27 设计创作，主要内容包括：本发明属于数控机床技术领域,具体涉及一种斜床身双主轴数控车床,包括防护罩,防护罩内设置有斜床身,斜床身上布置有第一主轴组件和床鞍组件；斜床身的导轨安装面上设置有两条床鞍导轨和两条第二主轴导轨,床鞍导轨和第二主轴导轨上均滑动连接有滑块,床鞍组件通过滑块滑动连接在床鞍导轨上；第二主轴导轨上通过滑块滑动连接有与第一主轴组件相对设置的第二主轴组件；滑块内设有油腔、出油筒和动力机构,出油筒内滑动连接有活塞；出油筒与油腔之间连接有通道,通道上设有单向进油阀；出油筒上设有单向排油阀,滑块的下部开有多个出油口。本方案的数控车床一次装夹工件即可完成工件两端加工,能够提高加工效率。(The invention belongs to the technical field of numerical control machine tools, and particularly relates to an inclined lathe bed double-spindle numerical control lathe which comprises a protective cover, wherein an inclined lathe bed is arranged in the protective cover, and a first spindle assembly and a saddle assembly are arranged on the inclined lathe bed; two saddle guide rails and two second main shaft guide rails are arranged on the guide rail mounting surface of the inclined lathe bed, sliding blocks are connected to the saddle guide rails and the second main shaft guide rails in a sliding mode, and a saddle assembly is connected to the saddle guide rails in a sliding mode through the sliding blocks; the second spindle guide rail is connected with a second spindle assembly which is arranged opposite to the first spindle assembly in a sliding manner through a sliding block; an oil cavity, an oil outlet cylinder and a power mechanism are arranged in the sliding block, and a piston is connected in the oil outlet cylinder in a sliding manner; a channel is connected between the oil outlet cylinder and the oil cavity, and a one-way oil inlet valve is arranged on the channel; the oil outlet cylinder is provided with a one-way oil outlet valve, and the lower part of the sliding block is provided with a plurality of oil outlets. The numerical control lathe can finish machining of two ends of the workpiece by clamping the workpiece once, and machining efficiency can be improved.)

1. The slant-bed double-spindle numerical control lathe comprises a hydraulic station, a cooling system, a protective cover and a programmable control panel, wherein a slant bed is arranged in the protective cover, and a first spindle assembly and a saddle assembly are arranged on the slant bed; two saddle guide rails and two second main shaft guide rails are arranged on the guide rail mounting surface of the inclined lathe bed, sliding blocks are connected to the saddle guide rails and the second main shaft guide rails in a sliding mode, and a saddle assembly is connected to the saddle guide rails in a sliding mode through the sliding blocks; the method is characterized in that: the second spindle guide rail is connected with a second spindle assembly which is arranged opposite to the first spindle assembly in a sliding manner through a sliding block; an oil cavity, an oil outlet cylinder and a power mechanism are arranged in the sliding block, a piston is connected in the oil outlet cylinder in a sliding mode, and the power mechanism is used for driving the piston to slide; a channel is connected between the oil outlet cylinder and the oil cavity, and a one-way oil inlet valve is arranged on the channel; the oil outlet cylinder is provided with a one-way oil outlet valve, and the lower part of the sliding block is provided with a plurality of oil outlets which can be communicated with the one-way oil outlet valve.

2. The inclined-lathe-body double-spindle numerically controlled lathe according to claim 1, characterized in that: the oil cavity is arranged at the upper part of the slide block and is positioned above the oil outlet cylinder.

3. The inclined-lathe-body double-spindle numerically controlled lathe according to claim 2, characterized in that: the oil outlets are distributed along the width direction of the sliding block, and the width direction of the sliding block is perpendicular to the moving direction of the sliding block.

4. The slant-bed double-spindle numerically controlled lathe according to claim 3, characterized in that: the oil outlet is rotatably connected with a ball, and a gap of 0.15-0.3mm is formed between the ball and the oil outlet.

5. The inclined-lathe-body double-spindle numerically controlled lathe according to claim 4, characterized in that: the ball is provided with an annular dovetail groove distributed along the circumference of the ball, the oil outlet is provided with two oppositely arranged clamping blocks, and the clamping blocks are clamped in the annular dovetail groove.

6. The slant-bed double-spindle numerically controlled lathe according to claim 3, characterized in that: an oil applying layer is arranged on the oil outlet and is a sponge layer.

7. The inclined-lathe-body double-spindle numerically controlled lathe according to claim 2, characterized in that: the longitudinal section of the sliding block is in an inverted concave shape, the inner walls of two opposite sides of the sliding block are rotatably connected with rotating balls, and the one-way oil drain valve is communicated with the rotating balls.

8. The inclined-bed double-spindle numerically controlled lathe according to any one of claims 1 to 7, characterized in that: the power mechanism comprises a rotating shaft which is rotatably connected in the sliding block, a first gear which is fixed on the rotating shaft and a first rack which can be meshed with the first gear, the first rack is arranged on the inclined lathe bed, and a cam which is used for driving the piston to reciprocate is fixed on the rotating shaft; an elastic part is connected between the piston and the oil outlet cylinder.

9. The inclined-bed double-spindle numerically controlled lathe according to any one of claims 1 to 7, characterized in that: the power mechanism comprises a threaded rod rotatably connected in the sliding block, a second gear fixed on the threaded rod and a second rack meshed with the second gear, the second rack is arranged on the inclined lathe bed, and the threaded rod penetrates through the piston and is in threaded connection with the piston; a limiting part for limiting the rotation of the piston is arranged in the oil outlet cylinder.

10. The inclined-lathe-body double-spindle numerically controlled lathe according to claim 9, characterized in that: the locating part is the bar arch that distributes along piston barrel length direction, and it has the recess with the protruding block of bar to open on the piston.

Technical Field

The invention belongs to the technical field of numerical control machine tools, and particularly relates to an inclined-lathe-body double-spindle numerical control lathe.

Background

The slant-bed numerically controlled lathe is a high-precision and high-efficiency automatic lathe. The multi-station tool turret or the power tool turret is equipped, so that the machine tool has wide technological performance, can machine complex workpieces such as linear cylinders, oblique line cylinders, circular arcs and various threads, grooves, worms and the like, has various compensation functions of linear interpolation and circular arc interpolation, and plays a good economic effect in the batch production of complex parts. The numerical control lathe with the inclined lathe bed has the advantages of good stability, improvement of space utilization rate, convenience in chip removal and the like, and is widely applied to various machining fields at present.

The existing slant-bed numerically controlled lathe is generally only provided with a main shaft assembly, and after a part to be machined is clamped on the main shaft assembly, a cutter in a tool turret performs turning on the part. According to the actual use requirement, both ends of a part of shaft parts are machined, the existing slant-bed numerically-controlled lathe is used for machining, the parts are required to be detached from the spindle assembly firstly after one end of each part is machined, then the other end of each part is clamped, and the other end of each part is turned by the cutter. By adopting the processing mode, the part needs to be clamped for many times, so that the precision of the processed part is low. Besides the defects, the guide rail on the existing slant-bed numerically controlled lathe needs to bear the gravity of a saddle assembly, a tailstock assembly and the like, the borne acting force is large, and meanwhile, because the top plane position of the guide rail is high, flowing lubricating oil is generally difficult to flow through the top plane of the guide rail, so that the guide rail is not enough in lubrication, and the abrasion of the guide rail is accelerated.

Disclosure of Invention

The invention aims to provide a double-spindle numerical control lathe with an inclined lathe bed to solve the problems of reduced precision of parts and insufficient lubrication of guide rails caused by the fact that the parts need to be clamped for multiple times.

In order to achieve the purpose, the scheme of the invention is as follows: the slant-bed double-spindle numerical control lathe comprises a hydraulic station, a cooling system, a protective cover and a programmable control panel, wherein a slant bed is arranged in the protective cover, and a first spindle assembly and a saddle assembly are arranged on the slant bed; two saddle guide rails and two second main shaft guide rails are arranged on the guide rail mounting surface of the inclined lathe bed, sliding blocks are connected to the saddle guide rails and the second main shaft guide rails in a sliding mode, and a saddle assembly is connected to the saddle guide rails in a sliding mode through the sliding blocks; the second spindle guide rail is connected with a second spindle assembly which is arranged opposite to the first spindle assembly in a sliding manner through a sliding block; an oil cavity, an oil outlet cylinder and a power mechanism are arranged in the sliding block, a piston is connected in the oil outlet cylinder in a sliding mode, and the power mechanism is used for driving the piston to slide; a channel is connected between the oil outlet cylinder and the oil cavity, and a one-way oil inlet valve is arranged on the channel; the oil outlet cylinder is provided with a one-way oil outlet valve, and the lower part of the sliding block is provided with a plurality of oil outlets which can be communicated with the one-way oil outlet valve.

The working principle and the beneficial effects of the scheme are as follows: two main shaft assemblies, namely a first main shaft assembly and a second main shaft assembly are arranged in the scheme, and the machining of two ends of a workpiece can be completed by clamping the workpiece once, so that the problem that the machining precision of the part is low due to multiple times of clamping can be effectively avoided while the machining efficiency is improved. The sliding block is further provided with an oil cavity, an oil outlet cylinder, a power mechanism and other structures, the power mechanism drives the piston to slide, when the piston slides to one side far away from the oil outlet cylinder, the pressure in the oil outlet cylinder is reduced, the one-way oil inlet valve is automatically opened, and lubricating oil in the oil cavity can be transferred to the oil outlet cylinder through the channel. When the piston slides in the opposite direction, the pressure in the oil outlet cylinder is increased, the one-way oil drain valve is automatically opened, the lubricating oil in the oil outlet cylinder flows to the oil outlet and is finally transferred to the surface of the saddle guide rail through the oil outlet (only a sliding block on the saddle guide rail is taken as an example for explanation here), the lubricating effect of the saddle guide rail is greatly enhanced, and the abrasion progress of the saddle guide rail is effectively slowed down.

Optionally, the oil chamber is arranged at the upper part of the slide block and is positioned above the oil outlet cylinder. In the operation process, the lubricating oil in the oil cavity is gradually reduced, namely the weight of the sliding block is reduced in the movement process, the oil cavity is arranged at the upper part of the sliding block instead of at any side of the sliding block, and the problem that the sliding block is not stable in operation due to overlarge weight difference of the two sides of the sliding block can be avoided.

Optionally, the plurality of oil outlets are distributed along a width direction of the slider, and the width direction of the slider is perpendicular to a moving direction of the slider. The oil outlet is arranged in such a way, so that the sliding block can be uniformly coated on the surface of the saddle guide rail in the sliding process, and the lubricating effect is improved.

Optionally, the oil outlet is rotatably connected with a ball, and a gap of 0.15-0.3mm exists between the ball and the oil outlet. Proved by verification, a gap of 0.15-0.3mm is arranged between the ball and the oil outlet, so that the surface of the ball is always coated with a layer of oil film, the abrasion between the ball and the saddle guide rail is effectively reduced, meanwhile, the lubricating oil is more effectively prevented from being quickly discharged through the oil outlet, the lubricating oil is excessively discharged, and the waste is caused,

optionally, the ball is provided with an annular dovetail groove distributed along the circumference of the ball, the oil outlet is provided with two oppositely arranged clamping blocks, and the clamping blocks are clamped in the annular dovetail groove. The arrangement of the annular dovetail groove and the fixture block can effectively prevent the ball from separating from the oil outlet.

Optionally, an oil applying layer is arranged on the oil outlet, and the oil applying layer is a sponge layer. The sponge layer is arranged, and lubricating oil flowing to the oil outlet can be smeared on the saddle guide rail through the sponge layer.

Optionally, the longitudinal section of the sliding block is in an inverted concave shape, the inner walls of two opposite sides of the sliding block are rotatably connected with rotating balls, and the one-way oil drain valve is communicated with the rotating balls. The slider sets up to "concave" shape, and the scheme is installed and is dismantled. The rotating balls are arranged on the inner walls of the two opposite sides of the sliding block, so that sliding friction between the sliding block and the side wall of the saddle guide rail is changed into rolling friction, and abrasion is effectively reduced. The oil drain valve is communicated with the rotating ball, and lubricating oil discharged from the oil drain valve can be transferred to the rotating ball, so that abrasion between the sliding block and the saddle guide rail is further reduced.

Optionally, the power mechanism comprises a rotating shaft rotatably connected in the sliding block, a first gear fixed on the rotating shaft, and a first rack capable of being meshed with the first gear, the first rack is arranged on the inclined bed body, and a cam for driving the piston to reciprocate is fixed on the rotating shaft; an elastic part is connected between the piston and the oil outlet cylinder.

The sliding block drives the first gear to move together when moving, when the first gear is meshed with the first rack, the first rack enables the first gear to rotate in the moving process, the rotating shaft in the sliding block and the cam on the rotating shaft rotate along with the first gear, and the piston is driven to slide in a reciprocating mode along the oil outlet cylinder in the rotating process of the cam.

Optionally, the power mechanism comprises a threaded rod rotatably connected in the sliding block, a second gear fixed on the threaded rod and a second rack meshed with the second gear, the second rack is arranged on the inclined lathe bed, and the threaded rod penetrates through the piston and is in threaded connection with the piston; a limiting part for limiting the rotation of the piston is arranged in the oil outlet cylinder.

The slider drives the second gear to move together when moving in one direction, and when the second gear is meshed with the second rack, the second rack enables the second gear to rotate in the moving process, and the threaded rod in the slider rotates along with the second gear in the fixed direction. And under the driving of the threaded rod, the piston on the threaded rod moves towards the fixed direction. When the sliding block moves in the opposite direction, the rotating directions of the second gear and the threaded rod are changed, and the piston on the threaded rod moves in the opposite direction and resets.

Optionally, the limiting member is a bar-shaped protrusion distributed along the length direction of the piston cylinder, and the piston is provided with a groove engaged with the bar-shaped protrusion.

Drawings

FIG. 1 is a schematic perspective view of an internal structure of a slant-bed double-spindle numerically controlled lathe according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of a slide block portion of a slant-bed double-spindle numerically controlled lathe according to an embodiment of the present invention;

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

FIG. 4 is a sectional view of a slide block portion of a slant-bed double-spindle numerically controlled lathe according to a second embodiment of the present invention;

FIG. 5 is a cross-sectional view of a slide block portion of a slant-bed double-spindle numerically controlled lathe according to a third embodiment of the present invention;

fig. 6 is an enlarged view of a portion B in fig. 5.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the lathe comprises a slant lathe bed 10, a saddle guide rail 11, a second spindle guide rail 12, a first spindle assembly 20, a second spindle assembly 30, a saddle assembly 40, a slide block 50, an oil chamber 51, a rotating ball 52, a ball 53, an annular dovetail groove 531, a sponge layer 54, a rotating shaft 60, a cam 61, a first gear 62, an oil outlet cylinder 70, an elastic element 71, a piston 72, a channel 73, a one-way oil inlet valve 731, a flow channel 74, a one-way oil outlet valve 741, a threaded rod 80 and a second gear 81.