A vertical machine tool cantilever beam leveling device

Abstract

The application discloses a kind of vertical machine tool cantilever beam leveling device;Belong to vertical machine tool technical field, including mutually connected bed, lower base, upper slide, beam, ram, operation module and counterweight balancing device;The counterweight balancing device includes mutually connected speed reducer, motor, counterweight block base, counterweight block, movable template, guide pillar, limit screw, rectangular guide rail, movable flange, ball guide sleeve, lifting rod, foot base and fixed flange etc.;The application is by installing counterweight block at the end of beam and floating limit fixing, its guide pillar guide sleeve is installed above beam as movable template follows beam movement, and beam and supporting component can effectively improve the support rigidity of beam by selecting rectangular guide rail, this structure can effectively adjust cantilever beam operation deflection deformation problem without the aid of power source and without increasing structure size, with the characteristics of high reliability, relatively low cost, improving machine tool geometric accuracy and machining accuracy etc.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vertical machine tools, and relates to a cantilever beam leveling device of a vertical machine tool, in particular to a cantilever beam machine tool in a limited space. BACKGROUND

[0002] In the prior art, there is a common problem of cantilever beam sagging of a machine tool, which comes from the fact that the working condition of the machine tool is in a limited space and the cross-sectional size of the machine tool is limited. Since the workpiece to be machined is located at a fixed position, the distance between the placement position of the machine tool and the center of the workpiece is far, and the beam is in a cantilever state during the operation of the machine tool, which is easy to cause deflection deformation, thereby affecting the machining precision of the machine tool. At present, the method for improving the cantilever beam sagging of the machine tool is to thicken the cantilever beam, increase the tail end counterweight, use telescopic guide rails, and lengthen the beam support part, but this method is easy to increase the cross-sectional size of the machine tool, cannot adjust the bending deformation of the cantilever beam in real time, reduces the dynamic response performance of the machine tool, and has a relatively high cost. In addition, the method of using auxiliary beams and auxiliary side columns to support the cantilever beam can enhance the rigidity of the beam structure, but the application of the reverse force will change the assembly precision of the beam when the beam is not in a cantilever state, thereby reducing the machining precision. The telescopic guide rail is only suitable for a beam with a small weight and without machining operation of the machine tool, and the machining dynamic performance of the machine tool is difficult to guarantee, so the machining precision is low. The lengthening of the beam support part cannot meet the working condition in a limited space, and the application of the counterweight and the manual adjustment of the position of the counterweight cannot adjust the bending deformation of the cantilever beam in real time during the operation of the machine tool. The position fixing of the stretching assembly needs to move the beam multiple times to compensate for the sagging amount of the beam through the elastic pull rod between the front and rear stretching assemblies, and this method has low efficiency and a certain error in manual measurement. SUMMARY

[0003] In view of the above problems, the present application aims to provide a cantilever beam leveling device of a vertical machine tool.

[0004] The technical scheme of the present application is as follows: the cantilever beam leveling device of the vertical machine tool comprises a machine tool main body, the machine tool main body comprises a bed body arranged on the bottom side, a lower base matched with the bed body is arranged on the upper side of the bed body, an upper sliding table is arranged on the upper side of the lower base, a beam is arranged on the upper side of the upper sliding table, and a counterweight balancing device is arranged on the upper side of the beam.

[0005] Further, the counterweight balancing device comprises lifting rods on the beam and foot supports, the foot supports are arranged on both sides of the beam, a center hole is formed above the foot supports, and the lifting rods are arranged in the center holes above the foot supports.

[0006] A counterweight base is arranged above the lifting rod, a counterweight is arranged above the counterweight base, a fixed flange is arranged on both sides of the counterweight, a fixed flange hole is formed in the fixed flange, and a guide column is arranged in the fixed flange hole.

[0007] Further, a limiting screw is arranged on both sides of the right side of the guide column.

[0008] Further, a movable die plate is arranged above the cross beam, a movable die plate hole is formed in the movable die plate, a ball guide sleeve is arranged on both sides of the left side in the movable die plate hole, and a movable flange is arranged on both sides of the right side in the movable die plate hole.

[0009] Further, the movable die plate is arranged on one side close to the counterweight.

[0010] Further, the ball guide sleeve is coaxially arranged with the guide column.

[0011] Further, a rectangular guide rail is arranged above the upper sliding table, a speed reducer is arranged inside the upper sliding table, and a motor for driving the cross beam and the movable die plate is arranged above the speed reducer.

[0012] Further, the speed reducer and the motor are arranged on the other side close to the counterweight.

[0013] Further, a ram is further arranged at the front end of the cross beam, a work module is arranged at the front end of the ram, and the ram and the work module are sequentially arranged on the other side of the counterweight balancing device.

[0014] Further, a connecting rod is arranged at the center position on the upper side of the lower base, and a fixing device is arranged on the bottom wall of the upper sliding table and sleeved on the connecting rod.

[0015] The beneficial effects of the present application are that, since the working condition of the machine tool belongs to a limited space and the machine tool is arranged far away from the center distance of the fixed workpiece position, the counterweight is installed at the end of the cross beam and is floatingly limited and fixed, the guide column guide sleeve is installed above the cross beam as a movable die plate to move with the cross beam, and the cross beam and the supporting part can effectively improve the supporting rigidity of the cross beam by selecting a rectangular guide rail, the structure can effectively adjust the deflection deformation problem of the cantilever cross beam without the aid of a power source and without increasing the structure size, and has the characteristics of high reliability, relatively low cost, improved machine tool geometric precision and machining precision, etc. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall structure schematic diagram of the present application;

[0017] Figure 2 is the overall structure schematic diagram of the counterweight balancing device in the present application;

[0018] In the figure, 1 is the bed body, 2 is the lower base, 3 is the upper sliding table, 4 is the cross beam, 5 is the slide ram, 6 is the working module;

[0019] 7 is the counterweight balancing device, 7001 is the speed reducer, 7002 is the motor, 7003 is the counterweight base, 7004 is the counterweight, 7005 is the movable die plate, 7006 is the guide column, 7007 is the limit screw, 7008 is the rectangular guide rail, 7009 is the movable flange, 7010 is the ball guide sleeve, 7011 is the lifting rod, 7012 is the foot base, and 7013 is the fixed flange. DETAILED DESCRIPTION

[0020] The specific technical solutions of the present application will be further described in detail below in combination with specific examples.

[0021] As shown in the figure, the present application provides a vertical machine tool cantilever cross beam leveling device, as Figure 1 shown, comprising a machine tool main body, the machine tool main body comprising a bed body 1, a lower base 2 is arranged above the bed body 1, an upper sliding table 3 is arranged above the lower base, a cross beam 4 is arranged above the upper sliding table 3, a slide ram 5 is arranged at the front end of the cross beam, a working module 6 is arranged at the front end of the slide ram 5, and a counterweight balancing device 7 is arranged above the cross beam 4.

[0022] Further, as Figure 2 shown, the foot base 7012 is provided on both sides of the cross beam, the lifting rod 7011 is arranged in the upper center hole of the foot base 7012, the counterweight base 7003 is floatingly installed above the lifting rod 7011, the counterweight 7004 is arranged above the counterweight base 7003, the fixed flange 7013 is arranged on both sides of the counterweight 7004, the guide column 7006 is arranged in the fixed flange hole, the movable die plate 7005 is arranged above the cross beam 4, the ball guide sleeve 7010 is arranged on both sides of the movable die plate hole, the movable flange 7009 is arranged on both sides of the movable die plate hole, and the limit screw 7007 is arranged on both sides of the guide column 7006.

[0023] The ball guide sleeve 7010 is coaxially installed with the guide column 7006, the rectangular guide rail 7008 is arranged above the upper sliding table 3, the speed reducer 7001 is arranged inside the upper sliding table 3, the motor 7002 is arranged above the speed reducer, and the motor 7002 drives the cross beam 4 and the movable die plate 7005.

[0024] The leveling device is additionally arranged on the beam, the deflection deformation of the beam can be adjusted in real time based on the original cantilever beam structure, when the machine tool beam is not in the working position, the leveling device is only supported by the structure of the movable template and does not generate any directional force on the beam, and the structure does not increase the cross-sectional size of the machine tool and is suitable for working conditions in limited space, the structure is compact, the processing cost and assembly difficulty are low, and the geometric precision of the machine tool can be significantly improved.

[0025] The key points of the present application are: ①, the present application adopts the counterweight leveling device 7 to compensate the deflection deformation in real time when the cantilever beam works in the limited space, which provides a new idea for the machine tool cantilever beam operation under special conditions; ②, the device can adjust the sag of the cantilever beam and compensate in real time without changing the cross-sectional size of the machine tool, and the support stiffness of the beam 4 can be effectively improved by selecting the rectangular guide rail 7008, which can significantly improve the geometric precision and machining precision of the machine tool.

[0026] In addition, ①, the present application solves the problem that the deflection deformation of the cantilever beam can be reduced while the cross-sectional size of the machine tool is increased in the prior art, the cantilever beam bending deformation cannot be adjusted in real time, which reduces the dynamic response performance of the machine tool, and the cost is also relatively high, and the present application has the characteristics of real-time compensation of cantilever beam deflection deformation, easy installation, high stability and reliability; ②, the present application can improve the geometric precision and machining precision of the machine tool, and has the characteristics of high reliability and relatively low cost.

[0027] In the present application, the beam 4 and the support part can effectively improve the support stiffness of the beam 4 by selecting the rectangular guide rail 7008, the counterweight leveling device 7 can effectively adjust the deflection deformation of the cantilever beam without the aid of a power source and without increasing the structure size, which can ensure the structural rigidity and working stability of the machine tool beam during cantilever operation, and can be used in limited space.

Claims

1. A vertical machine tool cantilever beam leveling device, comprising a machine tool main body, characterized in that, The machine tool body comprises a bed body (1) arranged on the bottom side, a matched lower base (2) arranged on the upper side of the bed body (1), an upper slide (3) arranged on the upper side of the lower base (2), a beam (4) arranged on the upper side of the upper slide (3), and a counterweight balancing device (7) arranged on the upper side of the beam (4); The counterweight balancing device (7) comprises a lifting rod (7011) on the beam (4) and a foot base (7012) arranged on both sides of the beam (4), a center hole is formed above the foot base (7012), and the lifting rod (7011) is arranged in the center hole above the foot base (7012); A counterweight block base (7003) is arranged above the lifting rod (7011), a counterweight block (7004) is arranged above the counterweight block base (7003), fixed flanges (7013) are arranged on both sides of the counterweight block (7004), fixed flange holes are formed in the fixed flanges (7013), and guide columns (7006) are arranged in the fixed flange holes; A movable die plate (7005) is arranged above the beam (4), a movable die plate hole is formed in the movable die plate (7005), ball guide sleeves (7010) are arranged on both sides of the movable die plate hole on the left, and movable flanges (7009) are arranged on both sides of the movable die plate hole on the right; The movable die plate (7005) is arranged on one side close to the counterweight block (7004); A rectangular guide rail (7008) is arranged above the upper slide (3), a speed reducer (7001) is arranged inside the upper slide (3), and a motor (7002) for driving the beam (4) and the movable die plate (7005) is arranged above the speed reducer (7001).

2. A cantilever beam leveling device for a vertical machine tool according to claim 1, characterized in that, Limiting screws (7007) are arranged on both sides of the guide column (7006) on the right.

3. The cantilever beam leveling device for a vertical machine tool according to claim 1, wherein The ball guide sleeves (7010) are coaxially arranged with the guide column (7006).

4. The cantilever beam leveling device for a vertical machine tool according to claim 1, wherein The speed reducer (7001) and the motor (7002) are arranged on the other side close to the counterweight block (7004).

5. A cantilever beam leveling device for a vertical machine tool according to claim 1, wherein A ram (5) is further arranged at the front end of the beam (4), a work module (6) is arranged at the front end of the ram (5), and the ram (5) and the work module (6) are sequentially arranged on the other side of the counterweight balancing device (7).

6. A cantilever beam leveling device for a vertical machine tool according to claim 1, wherein A connecting rod is arranged at the center position on the upper side of the lower base (2), and a fixing device is arranged on the bottom wall of the upper slide (3) and sleeved on the connecting rod.

Images