KR100452185B1 - Automatic tool changer for numerical control machine tools - Google Patents

Abstract

The present invention is to improve the automatic tool changer to replace the tool used for the machining of the workpiece in the numerical control machine tool according to the processing target, purpose, use, etc. to enable a faster and more accurate replacement and automatic tool changer The present invention relates to a tool automatic changer for a numerically controlled machine tool using a linear slider mechanism that contributes to the improvement of performance and quality of the numerically controlled machine tool.

A bed 32 having a table 31 for placing a workpiece to be processed;

Upper birds 33 coupled to move in the width direction of the bed 32 above the bed 32;

A vertical column 34 coupled to an upper portion of the upper birds 33 and moving forward and backward of the upper birds 33;

Spindle head 37 having a spindle 36 for attaching and detaching the tool 35 so as to be able to process the workpiece on the table 31 while moving in the up and down direction with respect to the vertical column 34 in front of the vertical column 34. ) Is configured to have a tool 35 having a plurality of tools (35) on the side of the numerical control machine tool 30 of the configuration that is coupled to the automatic control of the tool 35 by the command of the controller In

The tool automatic change device 40 includes a clamp 41 for holding a tool 35 for use by the numerical control machine tool 30;

It is characterized in that it is configured by arranging a plurality of sliders 42 for linearly moving the clamp 41 in the front and rear directions so that the tool 35 can be replaced.

Description

Automatic tool changer for numerical control machine tools using linear slider mechanism

The present invention relates to a tool automatic changer for a numerically controlled machine tool using a linear slider mechanism, and more particularly, to automatically change a tool used for processing a workpiece in a numerically controlled machine tool according to a processing target, purpose, or use. The tool changer has been improved to enable faster and more accurate changes.

Numerical Control Machine refers to a device that can process a workpiece by recording the movement of the tool with respect to the workpiece as encoded numerical information and controlling it by the controller.

Such numerically controlled machine tools can be controlled in various types such as positioning, straight line and contour control. Lathes, milling machines, drilling machines, machine centers, electric discharge machines, punch presses, etc. are divided into vertical and horizontal types. Applied to the machine.

As shown in FIG. 1 in the case of the vertical machining center 30 of the numerically controlled machine tool as described above;

The upper birds 33 moving in the width direction of the bed 32 are coupled to the upper side of the bed 32 having the table 31 for placing the workpiece to be processed, and the upper birds 33 above the upper birds 33. The vertical column 34 moving in the front and rear directions of) is installed.

In front of the vertical column 34, the main head 37 having a main shaft 36 for attaching and detaching the tool 35 so as to be able to process the workpiece on the table 31 while moving up and down with respect to the vertical column 34. ) Is combined.

The side of the vertical machining center as described above is provided with a tool automatic changer 40 which is detachably attached to the spindle head and which can be automatically replaced by a command of the controller with various types of tools for processing the workpiece.

Conventionally, such an automatic tool changer applies a cam drive type or an arm rotation type to mount and detach a tool on a tool magazine on a main shaft. However, problems such as a slow change of the tool and a decrease in accuracy when changing a tool may occur. there was.

Accordingly, the present invention has been invented to solve the above problems, and improves the automatic tool changer to replace the tool used for the machining of a workpiece in a numerically controlled machine tool according to the object, purpose, use, etc. The purpose is to contribute to the improvement of the performance and quality of the automatic tool changer and the numerically controlled machine tool as well as to the user's convenience.

1 is a side view of a vertical type machining center as an example of a numerically controlled machine tool for explaining the present invention.

Figure 2 is a perspective view showing a tool automatic change device for a numerically controlled machine tool using a linear slider mechanism to which the technique of the present invention is applied.

FIG. 3 is a perspective view illustrating an A portion of a tool automatic changer for a numerically controlled machine tool using the linear slider mechanism applied to FIG. 2. FIG.

4 is a cross-sectional view taken along line B-B of a tool automatic changer for a numerically controlled machine tool using the linear slider mechanism applied in FIG.

FIG. 5 is a cross-sectional view taken along line C-C of a tool automatic changer for a numerically controlled machine tool using the linear slider mechanism applied in FIG.

* Description of the symbols used in the main parts of the drawings *

30; Numerical Control Machine Tools

35; tool

40; Tool changer

41; clamp

45; Finger

48; spring

42; Slider

50; case

54; Outrail

55; Inner rail

56; Sliding Block

59,60; Ball row

64; cylinder

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the preferred embodiment of the present invention for achieving the above object.

1 is a side view of a vertical type machining center that is an example of a numerically controlled machine tool for explaining the present invention, and FIG. 2 is a perspective view showing an automatic tool changer for a numerically controlled machine tool using a linear slider mechanism to which the technique of the present invention is applied. 3 is a perspective view showing an A portion of a tool automatic changer for a numerically controlled machine tool using the linear slider mechanism applied to FIG. 2, and FIG. 4 is a tool for a numerically controlled machine tool using the linear slider mechanism applied to FIG. Sectional drawing taken along line B-B of an automatic changer, FIG. 5 is demonstrated together with cross section taken along line C-C of the tool automatic changer for numerically controlled machine tools using the linear slider mechanism applied to FIG.

The upper birds 33 moving in the width direction of the bed 32 are coupled to the upper side of the bed 32 having the table 31 for placing the workpiece to be processed, and the upper birds 33 above the upper birds 33. The vertical column 34 moving in the front and rear directions of) is installed.

In front of the vertical column 34, the main head 37 having a main shaft 36 for attaching and detaching the tool 35 to process the workpiece on the table 31 while moving up and down with respect to the vertical column 34. ) Is combined to form a vertical machining center (hereinafter referred to as numerically controlled machine tool 30).

Tool exchanger that can be automatically replaced by the command of the controller with various types of tools 35 attached to and detached from the spindle head 37 on the side of the numerical control machine tool 30 as described above to process the workpiece. Apparatus 40 is provided.

Tool automatic changer 40 for a numerically controlled machine tool to which the technique of the present invention is applied includes a clamp 41 for holding a tool 35 to be used by the numerically controlled machine tool 30, and the clamp 41, It would be natural to configure the slider 42 to be linearly moved in the rearward direction so that the tool 35 can be exchanged and arranged in multiple rows according to the number of the tools 35 to be used.

The clamp 41 has a clamp base 43 having a plate-like type, and a recess groove 44 formed in the middle of the tool 35 to hold the tool 35 on both sides of the clamp base 43. It is provided with a fixing base 46 having a finger 45 having the same inner surface shape as the concave groove 44 in front to be engaged.

The middle part of the fixing base 46 is fixed to the clamp base 43 by the hinge 47, and the tool 35 is always lifted inward in the inward direction through the spring 48 inside the rear end. Make sure you hold it firmly.

The slider 42 has a case 50 of an upper and lower narrow shape fixed to a cover for blocking the numerical control machine tool 30, and in the upper inner side of the case 50 in the transverse direction. A plurality of partition walls 51 are used to form the sliding space 52.

On both sides of each of the sliding spaces 52 is provided with an open surface 53 on one side so as to prevent movement of the out-line 54 of the roughly c-shaped channel type, and the inner side of the out rail 54. The rail 55 is installed so that the open rails 53 of the out rail 54 and the inner rail 55 face each other.

In the space between the out rail 54 and the open rail 53 of the inner rail 55 facing each other, a sliding block 56 for allowing the inner rail 55 to move horizontally freely with respect to the out rail 54 is provided. Intervene.

The sliding block 56 is formed on the flange 58, which protrudes on both sides of the upper and lower sides of the block body 57 in the form of a ball guide ball row 59, 60 integrally formed by the out rail (54) ) And the inner rail 55 to reduce the frictional force due to mutual contact.

The rear end of the inner rail 55 is fixed to the interval maintaining bar 61 so as to maintain a constant interval, the front is provided with a fixing block 62 to fix the clamp 41 on the upper side.

The fixed block 62 is fixed to the loader 65 and the pin 66 of the cylinder 64 freely fixed by being fixed to the pin 63 below the case 50 to operate the cylinder 64. By allowing the inner rail 55 to enter and exit the case 50, the numerical control machine tool 30 is configured to freely exchange the tool 35.

Looking at the working relationship of the present invention as described above,

The numerical control tool with one tool 35 mounted on the main shaft 37 of the numerical control machine tool 30 and relatively empty of one tool 35 in the tool automatic changer 40. When the machine 30 wants to replace the tool 35, the initial state is explained.

The tool to be changed is selected while commanding a tool change by a command of a controller (not shown) that controls the numerical control machine tool 30. In this case, the numerical control machine tool 30 is a tool automatic change device The main shaft 36 to mount the tool 35 to be exchanged with the preparation to receive the tool 35 mounted on the numerical control machine tool 30, and the tool automatic change device 40 to move to 40. Get ready to go.

When the main shaft 36 is in close proximity, the cylinder 64 of the slider 42 having the empty clamp 41 is operated to draw out the inner rail 55 of the slider 42 to the front of the case 50 to control the numerical value. Prepare to receive the tool 35 mounted on the spindle 36 of the machine 30.

In this state, when the main shaft 36 pushes the tool 35 into the finger 45 of the empty clamp 41, the finger 45 is held around the hinge 47 to grasp the tool 35, and at the same time, The spring 48 provided behind the 46 is in a contracted state.

When the clamping of the tool 35 is completed as described above, the cylinder 64 contracts to insert the inner rail 55 in the case 50 to maintain the initial state, and simultaneously clamps the selected tool 35. The cylinder 64 of the slider 42 is operated so that the main shaft 36 is pulled out in time to move in the direction of the tool 35 and is in the standby state.

Then, the main shaft 36 moves in the direction of the corresponding tool 35 to mount the tool 35 clamped to the clamp 41 and return to the machining position, and the empty clamp 41 without the tool 35. Slider 42 is returned to the initial position by the contraction action of the cylinder (64).

As described above, the various kinds of tools 35 can be easily exchanged and mounted, and the replacement time of the tools 35 can be greatly reduced.

As described above, the cylinder 64 is operated by the controller for controlling the numerical control machine tool 30 so that the slider 42 enters and exits the case 50. The outrail 54 constituting the slider 42 is provided. Will not move in a fixed state.

In addition, the sliding block 56 interposed between the out rail 54 and the inner rail 55 and the inner rail 55 connected to the loader 65 of the cylinder 64 are extended and contracted to move in and out. The tool 35 on the clamp 41 provided above 55 is moved to a position where it can be easily replaced, and the tool 35 is clamped again to be inserted into the case 50.

In this process, the ball rows 59 and 60 which are further provided on the sliding block 56 interposed between the out rail 54 and the inner rail 55 are reduced in friction to enable smoother operation.

The present invention as described above comprises a clamp for holding a tool and a slider for moving the automatic tool changer for exchanging a tool used for machining a workpiece in a numerically controlled machine tool according to a processing object, purpose, or use. By entering and exiting the front and back of the case, the numerical control machine tool makes it easy to exchange tools, thereby contributing to the improvement of the performance and quality of the automatic tool changer and the numerical control machine tool, and the benefits of the user of the automatic tool changer. There are many effects that can contribute to improvement.

Claims (4)

A bed 32 having a table 31 for placing a workpiece to be processed; Upper birds 33 coupled to move in the width direction of the bed 32 above the bed 32; A vertical column 34 coupled to an upper portion of the upper birds 33 and moving forward and backward of the upper birds 33; Spindle head 37 having a spindle 36 for attaching and detaching the tool 35 so as to be able to process the workpiece on the table 31 while moving in the up and down direction with respect to the vertical column 34 in front of the vertical column 34. ) Is configured to have a tool 35 having a plurality of tools (35) on the side of the numerical control machine tool 30 of the configuration that is coupled to the automatic control of the tool 35 by the command of the controller In The tool automatic change device 40 includes a clamp 41 for holding a tool 35 for use by the numerical control machine tool 30; And a slider (42) arranged in multiple rows to allow the tool (35) to be exchanged by linearly moving the clamp (41) forward and backward. The method of claim 1; The clamp 41 is a clamp base 43 is provided in the plate type; A fixing member 46 fixed to a hinge 47 with a finger 35 in front of the clamp base 43 so as to hold the tool 35; A numerically controlled machine tool comprising a spring 48 interposed inside the rear end of the fixture 46 so that the finger 45 is always directed inward to securely hold the tool 35. Tool changer. The method of claim 1; The slider 42 has a case 50 fixed to the cover of the numerical control machine tool 30; A plurality of sliding spaces 52 formed in the upper inner side of the case 50 by using partition walls 51; Out rails 54 fixed to both sides of the sliding space 52 having an open surface 53 on one side; An inner rail (55) installed on the inner side of the out rail (54) to face the open surface (53) of the out rail (54); A sliding block 56 interposed in the space between the open rails 53 of the out rail 54 and the inner rail 55 to allow the inner rail 55 to move horizontally freely with respect to the out rail 54; A gap maintaining bar 61 fixed to the rear end of the inner rail 55 to maintain a predetermined interval; A fixing block 62 provided at the front of the inner rail 55 to fix the clamp 41 to an upper side thereof; A lower portion of the fixing block 62 fixed to the lower portion of the case 50 by pins 63 and fixed by a loader 65 and a pin 66 of a cylinder 64 free to move; The inner rail (55) by the operation of the cylinder 64, the tool automatic changer for numerical control machine tools, characterized in that configured to enter and exit the case (50). The method of claim 3; The sliding block 56 is a block body 57 is provided in a straight form; A flange 58 which protrudes on both upper and lower sides of the block body 57; The flange 58, the ball rail (59, 60) of the ball guide shape for reducing the friction between the out rail 54 and the inner rail 55 is further formed integrally with the tool for automatic numerical control machine tools Device.