Movable tailstock of machine tool

Abstract

The utility model discloses a machine tool movable tailstock which comprises a first movable frame arranged on a machine tool, a second movable frame arranged on the first movable frame and a lifting frame arranged on the second movable frame, a hydraulic cylinder is arranged at the right end of the machine tool, and a connecting rod is arranged between two side plates of the lifting frame. The cylinder body end of the hydraulic cylinder is rotationally connected with the right end of the machine tool, the piston rod end of the hydraulic cylinder is rotationally connected with the connecting rod, guide holes are formed in two side plates of the first moving frame, each guide hole comprises an inclined part which is arranged in the middle and inclines downwards from left to right and horizontal parts arranged at the two ends of the inclined part, and the two ends of the connecting rod penetrate through the guide holes. When parts are replaced, the piston rod of the hydraulic cylinder shrinks, the live center moves downwards while moving rightwards, the manipulator can be effectively avoided, the manipulator can be avoided by moving rightwards by a small distance, and the occupied space is small.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a movable tailstock of a machine tool. Background Art

[0002] With the rapid development of domestic machine tools, the integration of CNC lathes and automation is becoming closer and closer. More and more CNC lathes are beginning to be used in conjunction with automation equipment such as trusses and articulated robots. When a horizontal CNC lathe is used in conjunction with automation, the tailstock must be moved to different positions to correspond to workpieces of different lengths. At the same time, the tailstock must also avoid the robot when it grabs the workpiece inside the machine tool. Such a servo mobile tailstock structure has become a necessary configuration requirement.

[0003] However, most of the servo tailstocks on the market are moved by a lead screw driven by a servo motor, or moved by a drag plate through an automatic latch mechanism; however, the above two methods require the tailstock to move a long distance and occupy a large space. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a movable tailstock for a machine tool, which can prevent interference between the manipulator and the tailstock when the workpiece is replaced and has a reliable structure.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A movable tailstock of a machine tool comprises a first movable frame arranged on the machine tool and moving on the machine tool, a second movable frame arranged on the first movable frame and moving left and right on the first movable frame, a lifting frame arranged on the second movable frame and lifting and lowering on the second movable frame, a rotary center is installed on the lifting frame, a hydraulic cylinder is arranged at the right end of the machine tool, a connecting rod is arranged between the two side plates of the lifting frame, a cylinder end of the hydraulic cylinder is rotatably connected to the right end of the machine tool, a piston rod end of the hydraulic cylinder is rotatably connected to the connecting rod, guide holes are arranged on the two side plates of the first movable frame, the guide holes include an inclined portion arranged in the middle position and inclined downward from left to right and horizontal portions arranged at both ends of the inclined portion, and both ends of the connecting rod pass through the guide holes.

[0007] Furthermore, the first movable frame and the second movable frame are both U-shaped when viewed from the side.

[0008] Furthermore, the bottoms of the two side plates of the first movable frame are provided with long holes, and the bottom plate of the second movable frame passes through the two long holes.

[0009] Furthermore, guide grooves are provided on both side plates of the second movable frame, and the upper ends of the guide grooves are communicated with the outside, and the both side plates of the lifting frame penetrate into the guide grooves from top to bottom and slide up and down in the guide grooves.

[0010] Furthermore, a signaling switch is provided on the side of the machine tool, and two signaling blocks are provided on the side of the first movable frame.

[0011] Furthermore, a mounting groove is provided on a side surface of the first movable frame, and the signal transmitting block is installed in the mounting groove.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model includes a first mobile frame arranged on a machine tool, a second mobile frame arranged on the first mobile frame, and a lifting frame arranged on the second mobile frame. A hydraulic cylinder is arranged on the right end of the machine tool, and a connecting rod is arranged between the two side plates of the lifting frame. The cylinder end of the hydraulic cylinder is rotatably connected to the right end of the machine tool, and the piston rod end of the hydraulic cylinder is rotatably connected to the connecting rod. Guide holes are arranged on the two side plates of the first mobile frame. The guide holes include an inclined portion arranged in the middle position and inclined downward from left to right and horizontal portions arranged at both ends of the inclined portion, and both ends of the connecting rod pass through the guide holes. When replacing parts, the hydraulic cylinder piston rod shrinks, and the connecting rod first moves to the right along the horizontal portion at the left end of the guide hole, and the lifting frame and the second mobile frame move to the right synchronously. When the connecting rod moves to the inclined portion, the second mobile frame moves to the right while the lifting frame descends, and then the connecting rod moves to the right along the horizontal portion at the right end of the guide hole. That is, the rotary top moves to the right and moves downward at the same time, which can effectively avoid the manipulator, and the manipulator can be avoided by moving to the right a short distance, and the space occupied is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the structure of the first mobile frame of the utility model.

[0018] In the figure: machine tool 1, first moving frame 2, second moving frame 3, lifting frame 4, rotary center 5, hydraulic cylinder 6, connecting rod 7, guide hole 8, long hole 9, guide groove 10, signal switch 11, signal block 12, installation groove 13. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0020] like Figure 1 and Figure 2 A movable tailstock of a machine tool comprises a first movable frame 2 which is arranged on a machine tool 1 and moves on the machine tool 1, a second movable frame 3 which is arranged on the first movable frame 2 and moves left and right on the first movable frame 2, a lifting frame 4 which is arranged on the second movable frame 3 and lifts and lowers on the second movable frame 3, a rotary center 5 is installed on the lifting frame 4, a hydraulic cylinder 6 is arranged on the right end of the machine tool 1, the lifting frame 4 is an inverted U-shape when viewed from the side, a connecting rod 7 is arranged between the two side plates of the lifting frame 4, the cylinder body end of the hydraulic cylinder 6 is rotatably connected to the right end of the machine tool 1, the piston rod end of the hydraulic cylinder 6 is rotatably connected to the connecting rod 7, the piston rod end of the hydraulic cylinder 6 is provided with a sleeve which is sleeved on the connecting rod 7, guide holes 8 are arranged on the two side plates of the first movable frame 2, the guide holes 8 include an inclined portion which is arranged in the middle position and tilts downward from left to right and horizontal portions which are arranged at both ends of the inclined portion, and both ends of the connecting rod 7 pass through the guide holes 8. When replacing parts, the piston rod of the hydraulic cylinder 6 contracts, and the connecting rod 7 first moves to the right along the horizontal part of the left end of the guide hole 8, and the lifting frame 4 and the second moving frame 3 move to the right synchronously. When the connecting rod 7 moves to the inclined part, the second moving frame 3 moves to the right and the lifting frame 4 descends, and then the connecting rod 7 moves to the right along the horizontal part of the right end of the guide hole 8. That is, the rotating top 5 moves to the right and moves downward at the same time, which can effectively avoid the robot, and the robot can be avoided by moving a short distance to the right, and the space occupied is small.

[0021] The first moving frame 2 and the second moving frame 3 are both U-shaped from the side.

[0022] like Figure 2 As described, the bottom of the two side plates of the first movable frame 2 is provided with long holes 9 , the axis direction of the long holes 9 is the left-right direction, and the bottom plate of the second movable frame 3 passes through the two long holes 9 .

[0023] like Figure 1 The two side plates of the second movable frame 3 are provided with guide grooves 10, the upper ends of the guide grooves 10 are communicated with the outside, and the two side plates of the lifting frame 4 penetrate into the guide grooves 10 from top to bottom and slide up and down in the guide grooves 10.

[0024] like Figure 2The machine tool 1 is provided with a signal switch 11 on the side, and a bracket is provided on the side of the machine tool 1. The signal switch 11 is installed on the bracket. Two signal blocks 12 are provided on the side of the first movable frame 2. When the first movable frame 2 moves, the signal switch 11 cooperates with the two signal blocks 12 to limit the left and right moving distance of the first movable frame 2.

[0025] like Figure 2 As described, a mounting groove 13 is provided on the side of the first moving frame 2 , and the signal transmitting block 12 is installed in the mounting groove 13 .

[0026] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A movable tailstock of a machine tool, characterized in that: The invention comprises a first movable frame (2) arranged on a machine tool (1) and moving on the machine tool (1), a second movable frame (3) arranged on the first movable frame (2) and moving left and right on the first movable frame (2), and a lifting frame (4) arranged on the second movable frame (3) and lifting and lowering on the second movable frame (3), wherein a rotary center (5) is installed on the lifting frame (4), a hydraulic cylinder (6) is arranged at the right end of the machine tool (1), a connecting rod (7) is arranged between two side plates of the lifting frame (4), a cylinder end of the hydraulic cylinder (6) is rotatably connected to the right end of the machine tool (1), and a piston rod end of the hydraulic cylinder (6) is rotatably connected to the connecting rod (7), and guide holes (8) are arranged on the two side plates of the first movable frame (2), wherein the guide holes (8) comprise an inclined portion arranged at a middle position and inclined downward from left to right and horizontal portions arranged at two ends of the inclined portion, and two ends of the connecting rod (7) pass through the guide holes (8).

2. A movable tailstock for a machine tool as claimed in claim 1, characterized in that: The first movable frame (2) and the second movable frame (3) are both U-shaped when viewed from the side.

3. A movable tailstock for a machine tool as claimed in claim 2, characterized in that: The bottoms of the two side plates of the first movable frame (2) are provided with long holes (9), and the bottom plate of the second movable frame (3) passes through the two long holes (9).

4. A movable tailstock for a machine tool as claimed in claim 1, characterized in that: The two side plates of the second movable frame (3) are provided with guide grooves (10), the upper ends of the guide grooves (10) are communicated with the outside, and the two side plates of the lifting frame (4) penetrate into the guide grooves (10) from top to bottom and slide up and down in the guide grooves (10).

5. A movable tailstock for a machine tool as claimed in claim 1, characterized in that: A signaling switch (11) is provided on the side of the machine tool (1), and two signaling blocks (12) are provided on the side of the first movable frame (2).

6. A movable tailstock for a machine tool as claimed in claim 5, characterized in that: A mounting groove (13) is provided on the side of the first mobile frame (2), and the signal transmitting block (12) is installed in the mounting groove (13).

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