KR100451419B1 - Unclamping And Clamping Device for The Coolant for Vertical Machining Center Spindle - Google Patents

Abstract

The present invention relates to a clamping and unclamping device for a vertical machining center spindle through coolant, wherein a housing having a draw bar coupled with a coupling coupled to an upper portion of a head frame is coupled to a cylinder having a predetermined length on an upper portion of the housing. Is vertically assembled, and a pair of pistons interlocked in the vertical direction on the upper and lower portions of the cylinder are accommodated to be sealed, and the piston has a predetermined length and a rod having an outlet hole formed therein. The lower end of the rod is coupled to the coupling to communicate with the draw bar while the bumper is fixed, and the upper end of the rod is connected to the check valve through the rotary joint so that air or coolant is discharged at high pressure through the outlet hole. As a structure, a separate operation for the removal of the cutting tip when machining a deep hole in the part By performing one hole machining operation without delay, the cutting tip is discharged and the hole is processed at the same time, so that the machining time of the hole can be shortened while the hole is precisely concentric, and the tool life, productivity and precision can be further improved. It would be.

In addition, since all the above operations are operated using pure pneumatic pressure, it is possible to improve the working environment of the worker and further prevent pollution of the environment.

Description

Unclamping And Clamping Device for The Coolant for Vertical Machining Center Spindle}

The present invention relates to a clamping and unclamping device for vertical machining center spindle through coolant, and more particularly, when cutting a deep hole in a variety of parts, the cutting oil is ejected at a high pressure through the tool, according to the removal of the cutting tip With one hole processing operation, the cutting tip discharge and the hole processing can be done simultaneously without any additional work delay. Therefore, the hole processing time is shortened and the concentricity is precisely processed, and the tool life, productivity and precision It is to improve the.

In addition, by configuring the independent air line so that the operation of the cylinder for the replacement of the tool can be operated only with pure air, it is possible to improve the working environment of the operator, and further prevent pollution of the environment.

Generally used machining centers are divided into vertical machining centers, horizontal machining centers, and vertical / horizontal models according to the direction of movement of the main axis.

There are three kinds of motions of the machining center: linear motion, rotational motion and spindle rotation. These motions are controlled by the numerical control gear and spindle.

Looking at the basic configuration of the machining center, it is an automatic tool changer that automatically changes the machine body and 20 to 70 tools to the cutting conditions. Multi-axis machining and multi-processing can be done with only one setting, which is very advantageous for the automation of machining process of small quantity parts.

It is a device to secure sufficient work load in recent machining centers. It is a function to increase the reliability of PC (pallet changer or pool) and machining, and it is a process monitoring function, automatic measurement, correction function, and adaptive control (AC). It also serves as a flexible manufacturing system (FMS) that increases the flexibility of machining and machining processes by adding fault self-diagnosis.

When machining holes in various parts using such a machining center, a suitable rotary tool is mounted on a common rotating spindle, and the rotary tool is vertically lowered from the surface of the workpiece to process the hole.

In particular, when the hole machining is to be completed in one operation, there is a problem that the defect of the concentricity of the hole is changed due to the cutting tip which is present in the inside of the hole and the severe wear and breakage of the tool.

In order to prevent such poor concentricity of the hole and damage to the tool, when the cutting tip existing inside the hole is removed while dividing the cutting depth of the hole several times, the machining of the hole and the wear and damage of the tool can be minimized. There is a problem in that the hole work time is delayed by performing a separate operation for removing the cutting tip, thereby lowering productivity.

The present invention has been made to solve the above problems, and when machining a deep hole in various parts, by air and cutting oil is ejected at a high pressure through the tool, the discharge of the cutting tip and the hole through a single hole processing operation Simultaneous machining is performed to reduce the hole machining time as well as to drill holes with accurate concentricity, further improving tool life, productivity and precision. It is an object of the present invention to provide a clamping and unclamping device for a vertical machining center spindle through coolant which is configured to be operable, thereby preventing environmental pollution and thus improving the working environment of the worker.

Figure 1 is an internal view showing the clamping and unclamping device for the vertical machining center spindle through coolant of the present invention.

<Explanation of symbols for the main parts of the drawings>

10 head frame 12 housing

14 draw bar 16 coupling

18: O-ring 20, 21: piston

22: needle bearing 26: cylinder

27,28: Cover 30: Bumper

32: rod 34: hexagonal portion

36: proximity switch 37: joint bracket

38: rotary joint 40: check valve

42: air purge valve 44,46: solenoid valve

The present invention for achieving the above object is coupled to the draw bar and the coupling coupled to the upper portion of the head frame having a tool insert. A housing having a built-in coupling, the cylinder having a certain length is assembled vertically on the upper portion of the housing The upper and lower parts of the cylinder are accommodated so that a pair of pistons interlocked and coupled in a vertical direction to each other is sealed, and the piston is coupled in a state in which a rod having an outlet hole formed therein is formed to have a predetermined length. The lower portion of the rod is coupled to the coupling to communicate with the draw bar while the bumper is fixed, and the upper portion of the rod is connected to the check valve through the rotary joint so that air or cutting oil is discharged at high pressure through the outlet hole. , When machining a deep hole in a part, once a hole without additional work delay due to the removal of the cutting tip By performing an operation to occur to the discharge hole and the process of the segment at the same time, it shortens the machining time, while the hole machining a hole is the exact concentricity. In addition, it is characterized by further improving the tool life, productivity and precision.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a clamping and unclamping device for a vertical machining center spindle through coolant of the present invention. First, a housing 12 is formed on an upper portion of a head frame 10 in which a tool inserting portion 9 is formed. ) Is assembled in a seated state, and the O-ring 18 is fitted between the draw bar 14 and the coupling 16 accommodated and installed in the housing 12.

In addition, a cylinder 26 having a predetermined length is vertically coupled to an upper portion of the housing 12, and upper and lower portions of the cylinder 26 are connected to a lower portion of the cylinder through a snap ring 24. 22, the piston 21 and the piston 20 assembled therein are accommodated and sealed and coupled to the respective covers 27 and 28. The upper portion of the piston 21 is coupled to the lower portion of the piston 20 to be interlocked by interlocking.

In addition, the pistons 20 and 21 have a predetermined length and are coupled in a state where a rod 32 having an outlet hole 31 formed therein passes through, and a lower portion of the rod 32 is a bumper 30. Is fastened. The lower end of the rod 32 consisting of the hexagonal shape 34 is shown as a structure assembled to the coupling 16.

Then, after performing various piping and operation to check the stroke of tool clamping / unclamping, the proximity switch 36 is set, the joint bracket 37 is assembled, and the rotary joint 38 is checked. After assembling the valves 40 respectively, hydraulic oil is supplied to the space A formed between the pistons 20 and 21.

At this time, while installing the air purge valve (42) so that the air is not occupied in the air to remove the air completely, attach the check valve 41 to prevent the back flow of oil.

Then, the air line is piped from the external sol valve 44 to the connecting portions B and C, and the air line is piped from another sol valve 46 to the connecting portions D and E. do.

The operation thereof will be described below. First, when air flows into the cylinder 26 through the line of the connecting portion B, the piston 20 descends and pushes the hydraulic oil filled in the space A downward. Accordingly, when the piston 21 is interlocked and lowered to approach the upper surface of the cover 27, the stroke stroke is completed and at the same time, the bumper 30 which cooperates with the piston 21 is lowered, and the head frame 10 is lowered. The unclamping operation is completed by pushing the mounted tool downwards.

At the same time, the proximity switch 36 recognizes the falling signal of the bumper 30 to operate the sole valve 46 to introduce air into the connection portion E, and thus through the outlet hole 31 of the rod 32. Blow out foreign matter completely.

On the contrary, when air flows into the cylinder 26 through the connection part C, the piston 20 rises to raise the piston 21 by self-pressurizing the hydraulic oil. At this time, the signal of the sole valve 46 is changed and the connection part ( Blow air into D) to assist in synergy. In addition, when the piston 20 is raised to reach the bottom of the cover 28, the clamping operation of the tool is completed. From this time, the cutting fluid is used to discharge the high pressure from the tool tip through the rotary joint 38 and the rod 32 along the high pressure pipe.

In the drawing, reference numeral 50 denotes a sensor bracket.

In the present invention, when machining a deep hole, etc. on a variety of parts in the machining center, the cutting oil is ejected at a high pressure through the tool, so that the discharge of the cutting tip and the processing of the hole is performed at the same time, thereby reducing the hole machining time and concentric It has the effect of machining the correct hole.

Furthermore, the life and productivity of the tool and the precision can be further improved, and the cylinder is made of pure air to perform all the operations to improve the working environment of the operator and further prevent the pollution of the environment.

Claims (4)

The draw bar 14 and the coupling 16 are coupled to the upper portion of the head frame 10 on which the tool inserting portion 9 is formed. A cylinder 26 having a predetermined length is assembled vertically, and the upper and lower portions of the cylinder 26 are accommodated to seal a pair of pistons 20 and 21 coupled and coupled in a vertical direction to each other. (20, 21) is formed in a predetermined length and coupled in a state that passes through the rod 32, the outlet hole 31 formed therein, the lower portion of the rod 32 is fixed while the bumper 30 is fixed It is coupled to the coupling 16 to communicate with the bar 14, the upper end portion of the rod 32 through the rotary joint 38 through the rotary joint 38 to discharge the air or cutting oil through the outlet hole 31 at a high pressure Clamping and unclamping for vertical machining center spindle through coolant, characterized in that connected to 40 In the ping device, The cylinder 26 between the pistons 20 and 21 is formed with a space A for filling hydraulic oil for interlocking of the pistons 20 and 21, and the air space is filled in the space A so that no air is charged. Clamping and unclamping device for the vertical machining center spindle through-coolant, characterized in that the purge valve 42 and the check valve 41 for preventing the reverse flow of hydraulic oil. delete The method of claim 1, The cylinder 26 has a connecting portion B for lowering the piston 20 and a connecting portion C for raising the piston 21, respectively, and the connecting portions B and C are external solenoid valves. Clamping and unclamping device for vertical machining center spindle through coolant, characterized in that it is connected by an independent air line (44). The method of claim 1, At a predetermined position of the cylinder 26, a connection part D for assisting the ascension of the piston 21 and a connection part E of the check valve 40 for discharging air and cutting oil at high pressure are connected, and the connection part ( D, E) clamping and unclamping device for the vertical machining center spindle through coolant, characterized in that connected to the solenoid 46 outside the air line.