KR101627525B1

KR101627525B1 - horizontal type broaching machine

Info

Publication number: KR101627525B1
Application number: KR1020140144971A
Authority: KR
Inventors: 정정환
Original assignee: 한국브로치주식회사
Priority date: 2014-10-24
Filing date: 2014-10-24
Publication date: 2016-06-07
Also published as: KR20160048395A

Abstract

The present invention relates to a main body comprising a main body having a front body and a broach tool installed along the horizontal direction, while forming an outer body; A guide rail disposed in front of the main body and installed along the installation direction of the broach tool; A moving unit movably installed along the guide rail; A driving unit for generating and transmitting a driving force for moving the moving unit; A jig provided on the moving part for gripping and fixing an object to be processed; A carry-in part positioned at one side of the guide rail for carrying an object to be machined into the jig; And a carry-out part located on the other side of the guide rail and carrying out a machined object to be machined from the jig. The present invention provides a horizontal broaching machine for improving machining convenience, Precision machining and ease of maintenance.

Description

Horizontal type broaching machine < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a broaching machine, and more particularly, to a broaching machine which is used for machining a rack-tooth type rack-bar, which is one of components of a steering apparatus for a vehicle, The present invention also relates to a new horizontal type broaching machine which can be precisely machined and can be easily maintained.

In general, a broaching machine is a device used for cutting an inner surface or a surface of a workpiece having a relatively complicated shape.

Such a broaching machine is classified into a punch type and a pull type according to its moving direction and is divided into a horizontal type and a vertical type according to the mounting method of the brooch, and the inner broaching machine and the surface broaching machine Respectively.

On the other hand, in the case of a rack-bar, which is one of the components of a conventional steering system for a vehicle, a rack tooth profile is formed on the surface thereof, and such rack gear profile is processed using various machine tools.

Particularly, in consideration of the fact that the dimensions of the rack tooth profile may be different or may be different from each other, it is preferable to use a die mold as disclosed in Japanese Patent Application No. 10-1180856 or 10-0815463 However, in order to improve the processing accuracy and shorten the working time, it is most preferable to process through a broaching machine.

However, in the case of the broaching machine for the tooth-type machining as in the conventional rack tooth type, since the broach tool for machining the product is moved and the teeth are machined on the product, the broach tool is operated in a stable manner There is a problem in that the size of the overall equipment is inevitably increased and the driving apparatus for providing the driving force for stable movement of the broach tool also has to be enlarged.

In particular, considering that the broach tool needs to be configured according to the precision of the machining area, the size of the broach tool must be increased. If the broach tool becomes large, the size of the apparatus must be increased.

Further, in the case of the horizontal broaching machine, it is necessary to fix the object (rack bar) in a state of being placed on the upper surface of the bed, The entire broaching machine is required to achieve a large structure in the up and down direction, the work position is difficult and maintenance thereof is difficult, and it is difficult to remove the cutting chips generated during the broaching process, And there is a problem that the machining precision is adversely influenced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a broach tool which is fixed in a vertically erected state so as to be disposed along a horizontal direction, The present invention provides a horizontal broaching machine according to the present invention which is capable of performing machining by the broaching tool so as to improve the convenience of machining and which can be precisely machined and is easy to maintain.

In order to accomplish the above object, the present invention provides a horizontal broaching machine comprising: a main body having a front body and a broach tool installed along a horizontal direction; A guide rail disposed in front of the main body and installed along the installation direction of the broach tool; A moving unit movably installed along the guide rail; A driving unit for generating and transmitting a driving force for moving the moving unit; A jig provided on the moving part for gripping and fixing an object to be processed; A carry-in part positioned at one side of the guide rail for carrying an object to be machined into the jig; And a carry-out part located on the other side of the guide rail and carrying out the processed object to be processed from the jig part.

The broaching tool includes at least one roughing broaching tool for roughing the object, and at least one or more finishing tools for finishing the object. The broaching tool for roughing and the broaching tool for finishing The tool is characterized in that the tool is arranged so as to have a gradually higher processing precision along the moving direction of the object to be processed.

The jig part is located on a surface of the moving part opposite to the broach tool of the main body. The jig part is held by the object in a raised state and grips and fixes both sides of the object to be processed. And an engagement stopper which is positioned at the bottom of the workpiece and received in the bottom end surface of the object to be processed.

In addition, the engagement stopper is replaceable.

The moving part is further provided with a cleaning brush for removing the cutting tip remaining on the broach tool while being in contact with the broach tool while being moved along the guide rail for processing the object or returning the object. do.

The main body is provided with a support rail along the movement direction of the jig, and the jig includes a grip block which is kept in engagement with the support rail and maintains the same distance from the main body .

In the horizontal-type broaching machine of the present invention as described above, instead of fixedly installing the broach tool, the machining object is moved and machined to the machining area of the machining object, and the movable object and the broach tool are moved in the front- It is possible to reduce the size of the driving unit (driving unit) as compared with the conventional horizontal positioning or the size of the operation area as compared with a conventional vertical broaching machine, and as a result, It is possible to minimize the size of the light emitting diode.

In addition, since the distance between the jig and the broach tool is always kept constant by the relative movement of the support rail and the grip block during the broaching process of the object, the horizontal-type broaching machine of the present invention, And the machining accuracy can be further improved.

In addition, the horizontal-type broaching machine of the present invention can be applied not only to a workpiece having a specific dimension but also to a workpiece having various dimensions through a replaceable structure of a broach tool and a replaceable structure of a joint stopper making a jig It has an effect that machining is possible.

Further, in the horizontal-type broaching machine of the present invention, since the washing brush is additionally provided in the moving part, during the broaching processing on the object to be processed or the cleaning of the broaching tool is performed while the moving part is returned to the home position It is possible to omit a separate washing operation and to shorten the working time.

1 is a plan view for explaining a horizontal broaching machine according to a preferred embodiment of the present invention;
2 is a front view showing a horizontal broaching machine according to a preferred embodiment of the present invention;
3 is a side view illustrating a horizontal broaching machine according to a preferred embodiment of the present invention.
4 is a plan view illustrating a structure of a main body of a horizontal broaching machine according to a preferred embodiment of the present invention.
5 is a plan view illustrating a structure of a moving part, a driving part, and a cleaning brush of a horizontal broaching machine according to a preferred embodiment of the present invention.
FIG. 6 is an enlarged view of a portion of a cleaning brush of a horizontal broaching machine according to a preferred embodiment of the present invention,
FIG. 7 is a plan view of a principal part of a horizontal broaching machine according to a preferred embodiment of the present invention, illustrating a gripping state of an object by a jig
FIG. 8 is a front view showing the gripping state of the object by the jig of the horizontal broaching machine according to the preferred embodiment of the present invention. FIG.
9 is an enlarged view of " A "
10 is a plan view for explaining an operation state of a horizontal broaching machine according to a preferred embodiment of the present invention.
FIG. 11 is a front view illustrating an operation state of a horizontal broaching machine according to a preferred embodiment of the present invention. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a horizontal type broaching machine of the present invention will be described with reference to FIGS. 1 to 11.

Prior to the embodiment, the horizontal-type broaching machine of the present invention is an example of a machine used for processing a rack-bar type rack-bar of a vehicle, and the object to be processed to be described later is rack- The target region is an example where the rack tooth profile is formed.

FIG. 1 is a plan view illustrating a horizontal broaching machine according to a preferred embodiment of the present invention. FIG. 2 is a front view illustrating a horizontal broaching machine according to a preferred embodiment of the present invention, 3 is a side view illustrating a horizontal broaching machine according to a preferred embodiment of the present invention.

The horizontal broaching machine according to an embodiment of the present invention includes a main body 100, a guide rail 200, a moving part 300, a driving part 400, The broach tool 110 is fixed to the main body 100 and the object to be processed 10 is held in a standing state So that the machining can be performed while passing through the broaching tool 110 by the movement of the jig part 500. Such machining can be performed along the horizontal direction so that a situation in which the work is substantially progressed So that it can be easily recognized and maintained.

This will be described in more detail below for each configuration.

First, the main body 100 is a portion forming an outer body of a horizontal broaching machine according to an embodiment of the present invention.

The main body 100 is installed in a state of being fixed to a work site, and a broach tool 110 is installed along the horizontal direction.

Particularly, in the embodiment of the present invention, the broach tool 110 includes at least one roughing broach tool for roughing the object to be processed 10, at least one broaching tool for finishing the object 10, The broaching tool for roughing and the broaching tool for finishing are sequentially arranged so as to have gradually higher processing accuracy along the moving direction of the object 10.

Such a sequential arrangement allows the workpiece 10 to be moved from one side (left side in the figure) of the main body 100 to the other side (right side in the drawing) So that the broaching process can be completed.

Of course, it is more preferable that each of the broach tools 110 is replaceably installed in the main body 100 so that the broach tool 110 can be selected differently depending on the shape and dimensions of the machining area 11.

Next, the guide rail 200 is a portion for guiding horizontal movement of the moving unit 300, which will be described later.

The guide rail 200 includes a pair of rails positioned in front of the main body 100 and is installed to guide the horizontal movement of the moving unit 300 along the installation direction of the broach tool 110 do.

Next, the moving part 300 is a part that is installed to be movable along the guide rail 200.

The moving unit 300 is installed so as to be guided by the guide rail 200 in a state of being laid on the guide rail 200. In the embodiment of the present invention, For example.

5 and 6, the cleaning unit 300 may further include a cleaning brush 310. The cleaning brush 310 may be disposed on the moving unit 300, as shown in FIGS.

The cleaning brush 310 may be a brush that contacts the broach tool 110 while the moving part 300 moves along the guide rail 200 for processing the workpiece 10 or returning the workpiece. And the cutting tip and various foreign substances remaining in the broach tool 110 are removed.

In other words, since the cleaning brush 310 is additionally provided to the moving part 300, the cleaning of the broach tool 110 can be performed automatically so that continuous operation can be performed without performing a separate cleaning operation will be.

At this time, the cleaning brush 310 is not simply installed in a fixed state. Instead, when the moving part 300 is moved forward or backward, the cleaning brush 310 is moved toward the brushing tool 110 It is preferable that the cleaning brush 310 protrude and return to the original position by using the cylinder 320. In this case,

Next, the driving unit 400 generates and supplies a driving force for moving the moving unit 300.

In an embodiment of the present invention, the driving unit 400 may be a cylinder, as shown in FIGS. 1 to 3 and 5.

At this time, the plunger 410 of the driving unit 400 is connected to the bottom surface of the moving unit 300, and the moving unit 300 is moved along the guide rail 200 by the operation of the driving unit 400 .

Of course, the driving unit 400 is not limited to a cylinder, and may be a ball screw structure, a linear motor structure, or the like.

The jig 500 is moved along the guide rail 200 by the moving part 300 while grasping the object 10 so that the object 10 gripped by the moving part 300 is guided by the broach tool 110 So that it can be broached.

7 and 8, the jig 500 is positioned on a surface of the moving part 300 facing the broach tool 110 of the main body 100, A pair of clamping clamps 510 and 520 for gripping and fixing both sides of the object to be processed 10 while being seated in a state where the object 10 is placed upright, (Not shown).

The two gripping clamps 510 and 520 are composed of a fixed clamping clamp 510 and a clamping clamp 520 movably installed toward the fixed clamping clamp 510. The respective clamping clamps 510 and 520, 510 and 520 are formed with gripping grooves 511 and 521, respectively, so that the unprocessed portions of the object 10 can be gripped while being accommodated.

Further, the engagement stopper 530 is provided to be inclined or vertically erected in accordance with the shape of the rack teeth formed in the object 10.

Particularly, in the embodiment of the present invention, the above-described engagement stoppers 530 are provided in a plurality of differently formed according to the type of the object 10, and only one of them is selected according to the type of the object 10, ). &Lt; / RTI > That is, considering the fact that the object 10 to be processed is different in the position, direction, and the like of the diameter, the length, and the rack teeth according to the type of the vehicle 10, the engagement stopper 530 may be provided for each type of the object 10 It is not necessary to use the horizontal type broaching machine of the present invention merely for the purpose of machining a rack tooth profile for a specified kind of object 10, .

In the embodiment of the present invention, a support rail 120 is provided on the front surface of the main body 100 along the moving direction of the jig 500, and the support rail 120 is provided on the jig 500, And a grip block 540 that is maintained in the same distance from the main body 100 while being meshed with the main body 100. As shown in FIG.

That is, through the additional provision of the support rail 120 and the grip block 540, the machining area can be maintained at a constant distance from the broach tool 110 at the time of broaching the machining area of the workpiece 10 So that precision machining can be performed.

The carry-in part 600 is a device for carrying the object 10 to be machined into the jig 500. The take-out part 700 is a device for transferring the object 10 to be machined to the jig 500).

The carry-in part 600 and the carry-out part 700 are provided on the side (the left side in the figure) where the machining object 10, which is one side of the guide rail 200, (Right side in the figure) on which the processing of the object 10 is completed, respectively, as shown in the attached Fig.

Particularly, in the embodiment of the present invention, it is shown that the carry-in unit 600 and the carry-out unit 700 are made of robotic arms, thereby enabling automatic work to be performed and maximizing space utilization .

Hereinafter, the broaching process of the object 10 using the horizontal broaching machine according to the embodiment of the present invention described above will be described in more detail.

First, in the initial state, as shown in FIGS. 1 and 2, the moving unit 300 is maintained in a state where it is positioned on one side (left side in the drawing) of the main body 100 on the material receiving side.

When the power is supplied to the horizontal broaching machine in the initial state and the operation control for broaching is performed, the operation of the carry-in part 600 is performed to grasp the object 10 to be processed The jig 500 is brought into the state shown in Fig.

In this case, the lower end of the object to be processed 10 is installed in a standing state by being engaged with the engagement stopper 530 constituting the jig part 500. Then, by the clamping operation of the gripping clamps 510 and 520, Both side surfaces of the base 10 are gripped and fixed. This is as shown in FIGS. 7 and 8 attached hereto.

When the gripping of the object 10 is completed, the driving unit 400 is driven and the moving unit 300 is moved to the work carrying-out side (right side in the figure) And is moved along the guide rail 200.

When the moving part 300 is moved as described above, the machining part 11 of the object to be processed 10 held by the jig 500 is fixed to the tool body 100 of the main body 100 110 of the broach tool 110. In this process, a rack tooth profile by the broach tool 110 is formed on the machined portion 11.

Considering that the broach tool 110 is disposed so as to have a gradually higher processing accuracy along the moving direction of the object 10, the processing region 11 of the object 10 gradually has a high processing accuracy .

Particularly, considering that the holding block 540 provided in the jig part 500 is configured to be supported by the support rail 120 provided on the front surface of the main body 100, The machined portion 11 is always moved in exactly the same state as the broach tool 110, whereby the rack tooth profile with respect to the machined portion 11 can be precisely machined.

10 and 11, when the moving part 300 reaches the other side (the right side in the figure) of the main body 100, as shown in FIG. 10 and FIG. 11, The movement of the moving part 300 is stopped while the driving is stopped and the object to be processed 10 gripped by the jig 500 is carried out by the operation of the carrying part 700. [

If the object to be processed 10 is taken out through the above process, the driving unit 400 is reversely driven and the moving unit 300 is returned to the initial position.

6, the cleaning brush 310 is protruded toward the broach tool 110, so that the cleaning brush 310 is moved to the moving part 400. In this case, The cutting tool 300 cleans the surface of the broach tool 110 while the cutting tool 300 returns to the initial position and removes the cutting chips remaining on the surface of the broach tool 110. [

Therefore, through the repetition of the above-described processes, the forming of the rack tooth profile for each object to be processed 10 can be continuously performed in an automated process.

As a result, in the horizontal broaching machine of the present invention, instead of fixedly installing the broach tool 110, the machining object 10 is moved and the machining part 11 of the object 10 is machined, Since the object 10 and the broach tool 110 are configured to face each other horizontally in the front-rear direction, they can be horizontally arranged facing each other in the vertical direction or minimized in the size of the operation area as compared with a conventional vertical broaching machine It becomes possible to reduce the size of the driving device (driving part), thereby minimizing the size of the whole equipment.

The distance between the jig part 500 and the broach tool 110 is always constant by the relative movement of the support rail 120 and the grip block 540 during the process of broaching the object 10 The machining accuracy with respect to the object 10 can be further improved.

The horizontal-type broaching machine of the present invention is configured such that the workpiece 10 having a specific dimension (for example, the diameter of the workpiece 10) can be changed through the replaceable structure of the broach tool 110 and the interchangeable structure of the engagement stopper 530 constituting the jig 500 The processing object 10 having various dimensions can be processed.

In the horizontal type broaching machine of the present invention, the cleaning brush 310 is additionally provided to the moving part 300, so that during the process of broaching for the object 10, As the cleaning of the broach tool 110 is performed during the return, a separate cleaning operation can be omitted, thereby shortening the working time.

10. Workpiece 11. Machining area
100. Main body 110. Brooch tool
120. Support rail 200. Guide rail
300. Moving part 310. Cleaning brush
320. Cylinder 400. Drive
410. Plunger 500. Jig
510, 520. Finger Clamps 511,521. Phage groove
530. Coupling stopper 540. Grip block
600. Carrying part 700. Carrying part

Claims

A main body having a front body and a broach tool disposed along the horizontal direction while forming an outer body;
A guide rail disposed in front of the main body and installed along the installation direction of the broach tool;
A moving unit movably installed along the guide rail;
A driving unit for generating and transmitting a driving force for moving the moving unit;
A jig provided on the moving part for gripping and fixing an object to be processed;
A carry-in part positioned at one side of the guide rail for carrying an object to be machined into the jig; And,
And a carry-out part located on the other side of the guide rail and carrying out the processed object to be processed from the jig part,
A support rail is provided on a front surface of the main body along a moving direction of the jig,
Wherein the jig is provided with a grip block which is held in a state of being engaged with the support rail and keeps a distance from the main body to be the same.

The method according to claim 1,
Wherein the broaching tool comprises at least one roughing broaching tool for roughing a workpiece and at least one finishing tool for finishing the workpiece,
Wherein the roughing broaching tool and the finishing tool for broaching are disposed so as to have a gradually higher processing accuracy along the moving direction of the object to be processed.

The method according to claim 1,
The jig
A gripping clamp which is positioned on a surface of the moving part opposite to the broach tool of the main body and which is seated in a standing state so as to grip and fix both sides of the object,
And a coupling stopper which is located at the bottom of the gripping clamp and received in the bottom end surface of the object to be processed.

The method of claim 3,
Wherein the engagement stopper is replaceably installed.

5. The method according to any one of claims 1 to 4,
Wherein the moving part is further provided with a cleaning brush for removing the cutting tip remaining in the broach tool while being in contact with the broaching tool while being moved along the guide rail for processing the object or returning the object. Equilibrium broaching machines.

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