Material puller of numerical control machine tool

Abstract

The utility model relates to the technical field of material pullers, and discloses a numerical control machine tool material puller which comprises a fixing frame and two clamping jaws, the two clamping jaws are symmetrically arranged, one ends of the two clamping jaws are rotatably connected in the fixing frame, groove bodies are formed in the inner side surfaces of the clamping jaws, and rubber sheets are fixedly embedded in the inner surfaces of the groove bodies. An air bag is integrally connected and fixed to the surface of the rubber sheet, arc grooves are formed in the outer surfaces of the clamping jaws on the inner side of the fixing frame, and air cylinders are rotatably connected and installed between the arc grooves of the two clamping jaws and the inner surface of the fixing frame. According to the technical scheme, the groove body is formed in the inner side of the chuck, the air bag is fixedly installed in the groove body, the clamping jaw shrinks towards the inner side after being arranged on the outer side of a columnar raw material, meanwhile, the air bag is inflated to expand, the air bag abuts against the outer ring of the workpiece raw material with lines, then the material can be stably pulled out, and the lines are prevented from being abraded.

Description

Technical Field

[0001] The utility model relates to the technical field of material pullers, in particular to a material puller for a numerically controlled machine tool. Background Art

[0002] CNC machine tools are high-precision, high-efficiency automated machine tools equipped with multi-station turrets or power turrets. The machine tools have a wide range of processing technology capabilities and can process straight cylinders, oblique cylinders, arcs and various threads, and have played a good economic role in the mass production of complex parts.

[0003] During processing, the material bar is pulled out from the chuck by the puller for processing. Some workpieces need to be pulled out after preliminary processing. There are already cut lines on the surface. The puller is pressed against the surface and it is easy to wear the lines and affect the processing quality. Therefore, we propose a puller for CNC machine tools. Utility Model Content

[0004] The utility model aims to provide a material puller for a CNC machine tool, in which a groove is provided on the inner side of a chuck, an airbag is fixedly installed in the groove, and the jaws are placed on the outer side of a columnar raw material and then contracted inwardly, while the airbag is inflated and expanded, and the airbag contacts the outer ring of the workpiece raw material containing a texture, and then the material can be stably pulled out and the texture can be prevented from being worn, thereby solving the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a CNC machine tool puller, comprising a fixed frame and a clamping jaw, wherein two clamping jaws are provided, the two clamping jaws are symmetrically arranged and one end is rotatably connected to the fixed frame; a groove body is provided on the inner surface of the clamping jaw, a rubber sheet is embedded and fixed on the inner surface of the groove body, and an air bag is integrally connected and fixed to the surface of the rubber sheet; an arc groove is provided on the outer surface of the clamping jaw on the inner side of the fixed frame, and a cylinder is rotatably installed between the arc grooves of the two clamping jaws and the inner surface of the fixed frame.

[0006] By adopting the above technical solution, the fixed frame and other structures are installed and fixed on the tool holder of the machine tool, and the tool holder is used to drive the structure to move the position, so that the clamping jaws are opened and placed on the outer circle of the columnar raw material and then retracted. At the same time, the airbag is inflated and pressed against the outer surface of the workpiece raw material containing the texture, so as to avoid wear on the texture when pulling out.

[0007] Optionally, a clamp is connected and fixed to the side of the fixing frame, and the clamp is located in the middle of the side of the fixing frame.

[0008] By adopting the above technical solution, the chuck can be locked and fixed by the tool holder, thereby locking the fixing frame to the side of the tool holder.

[0009] Optionally, the airbag is connected to an air tube communicating therewith, and each airbag is connected to two air tubes that extend through the outside of the clamp.

[0010] By adopting the above technical solution, one of the tracheas is used to inflate the airbag, and the other trachea is used to exhaust air to shrink the airbag.

[0011] Optionally, the clamp is rotatably connected to the interior of the fixed frame via a rotating shaft, and the rotating shaft is located on the inner side of the fixed frame.

[0012] Optionally, two ends of the cylinder are rotatably connected to the clamping surface at the arc groove and the inner surface of the fixed frame through hinges.

[0013] By adopting the above technical solution, the clamping claws can be pulled closer or open normally when the cylinder is extended or retracted.

[0014] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0015] 1. The technical solution of the present application is to provide a groove body on the inner side of the chuck, and to fix an airbag in the groove body. After the jaws are placed on the outer side of the columnar raw material, they are retracted inwardly, and at the same time, the airbag is inflated and expanded. The airbag is in contact with the outer circle of the workpiece raw material containing the texture, and then the material can be stably extracted and the texture can be prevented from being worn.

[0016] 2. The technical solution of the present application achieves stable fixation of the rubber sheet and further achieves stable fixation of the airbag by embedding the rubber sheet into the inside of the clamping claws at the groove body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0018] Figure 1 It is a schematic diagram of the overall structure of the CNC machine tool puller of the utility model;

[0019] Figure 2 The utility model is a schematic diagram of the internal structure of the fixed frame of the CNC machine tool puller.

[0020] In the figure: 1, fixed frame; 11, chuck; 2, clamping claw; 21, slot body; 3, rubber sheet; 31, air bag; 311, air pipe; 32, arc groove; 33, rotating shaft; 4, cylinder; 41, hinge. DETAILED DESCRIPTION

[0021] See also Figure 1-2The utility model provides a technical solution: a CNC machine tool puller, including a fixed frame 1 and a clamping jaw 2, the side of the fixed frame 1 is connected and fixed with a chuck 11, the chuck 11 is located in the middle position of the side of the fixed frame 1, when the structure is installed and fixed, the chuck 11 is clamped on the locking structure of the tool holder and locked, thereby realizing the clamping and locking of the fixed frame 1.

[0022] See also Figure 2 Two clamping jaws 2 are provided, and the two clamping jaws 2 are symmetrically arranged. The right side of the clamping jaw 2 extends into the interior of the fixed frame 1. The clamping jaw 2 is rotatably connected to the interior of the fixed frame 1 through a rotating shaft 33. The rotating shaft 33 is located on the inner side of the fixed frame 1. The outer surfaces of the right sides of the two clamping jaws 2 are both provided with arc-shaped arc grooves 32. The inner surfaces of the arc grooves 32 are rotatably connected to the cylinder 4 through a hinge 41. The other end of the cylinder 4 is connected and fixed to the inner surface of the fixed frame 1 through a hinge 41. When the cylinder 4 is pushed out, the clamping jaws 2 can be brought close and tightened. Conversely, when the cylinder 4 is retracted, the clamping jaws 2 can be opened, separated and opened.

[0023] See also Figure 1 , a groove 21 is provided on the inner surface of the two clamping jaws 2, and a rubber sheet 3 is embedded and fixed on the inner surface of the groove 21. An airbag 31 is connected and fixed to the surface of the rubber sheet 3 as a whole. The airbag 31 is filled in the groove 21. The two airbags 31 can be opened or approached as the clamping jaws 2 are opened or closed. Each airbag 31 is connected to two air pipes 311 connected thereto, and the air pipes 311 run through the outside of the clamping jaws 2. One of the air pipes 311 is connected to a high-pressure air source through a control air valve. When the air valve is opened, air is inflated into the airbag 31 to expand it, so that the airbag 31 is pressed against the surface of the workpiece material with a texture, thereby avoiding wear when clamping and pulling the material. The other air pipe 311 is connected to a control air release valve. After the pulling is completed, the gas inside the airbag 31 is discharged from the air pipe 311 to shrink the airbag 31, thereby releasing the clamping and locking of the workpiece material.

[0024] When in use, the clamp 11 is clamped and locked on the tool holder of the lathe to realize the locking installation of the fixed frame 1, so that the cylinder 4 is connected to the high-pressure air source through the control valve, and the two air pipes 311 of the air bag 31, one of which is connected to the high-pressure air source through the control valve, and the other is connected to the exhaust solenoid valve. When it is necessary to pull the material, the tool holder drives the fixed frame 1 and the clamp 2 to approach the columnar raw material, and then the cylinder 4 is controlled to retract and pull the two clamps 2 apart and open, so that the inner side of the clamp 2 is clamped on the outer side of the columnar material. The cylinder 4 is pushed out to bring the two jaws 2 closer together, and at the same time, air is inflated into the airbag 31 through the air pipe 311 to expand it, so that the airbag 31 inside the jaw 2 is pressed against the outer circle of the unprocessed or preliminarily processed columnar raw material and locked, and then the fixed frame 1 and the jaw 2 are driven to move by the tool holder to extract the columnar raw material, and then the pressure is released through another air pipe 311 to shrink the airbag 31, and the cylinder 4 is controlled again to retract and open the jaw 2, loosen the clamping of the columnar raw material and move the equipment away.

Claims

1. A material puller for a numerically controlled machine tool, comprising a fixed frame (1) and a clamping claw (2), characterized in that: The clamping jaws (2) are provided with two, the two clamping jaws (2) are symmetrically arranged and one end of the two clamping jaws (2) is rotatably connected to the fixed frame (1); The inner surface of the clamping jaw (2) is provided with a groove (21), a rubber sheet (3) is embedded and fixed on the inner surface of the groove (21), and an air bag (31) is integrally connected and fixed to the surface of the rubber sheet (3); The outer surface of the clamping jaws (2) inside the fixed frame (1) is provided with arc grooves (32), and a cylinder (4) is rotatably installed between the arc grooves (32) of the two clamping jaws (2) and the inner surface of the fixed frame (1).

2. A CNC machine tool puller according to claim 1, characterized in that: A clamp (11) is connected and fixed to the side of the fixing frame (1), and the clamp (11) is located in the middle of the side of the fixing frame (1).

3. A CNC machine tool puller according to claim 1, characterized in that: The airbag (31) is connected to an air pipe (311) communicating therewith, and each airbag (31) is connected to two of them and penetrates to the outside of the clamping jaw (2).

4. A CNC machine tool puller according to claim 1, characterized in that: The clamping jaw (2) is rotatably connected to the interior of the fixed frame (1) via a rotating shaft (33), and the rotating shaft (33) is located on the inner side of the fixed frame (1).

5. A CNC machine tool puller according to claim 1, characterized in that: The two ends of the cylinder (4) are rotatably connected to the surface of the clamping claw (2) at the arc groove (32) and the inner surface of the fixed frame (1) respectively through hinges (41).

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