KR101833793B1 - A Spindle Screw Forming Apparatus - Google Patents

Abstract

The present invention relates to an apparatus to process a spindle screw. According to the present invention, in an apparatus to process a spindle screw, which supports a shaft part of a spindle material by a support member to process a screw on the shaft part by two rolling rollers (310, 311), a jig (330) is disposed adjacent to an end part of the rolling roller by a bracket to support a flange of the spindle member. The jig (330) is formed with a V-shaped block (331) and includes a stopper (335) fixated in a groove (332) formed on a front side of the block (331) to support a front surface side of the flange (2) of the spindle member disposed on the block (331). Accordingly, the shaft part is supported by a support part provided between the rolling rollers having the screw formed thereon, the flange is supported by the jig disposed adjacent to the end part of the rolling rollers, and the screw is formed by the rolling rollers in a constant position with respect to a protrusion as a screw starting point formed in the flange when a front surface of the flange is disposed to be supported by a front stopper provided in the jig; thus providing an effect capable of constantly maintaining a screw starting position of a spindle unit to facilitate quality management of the spindle unit and enhance productivity of the spindle unit.

Description

[0001] The present invention relates to a spindle screw forming apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle threading apparatus, and more particularly, to a spindle threading apparatus for threading a spindle shaft portion such that a starting point of a thread of a spindle for an emergency braking apparatus is constant.

In recent years, the use of an electronic parking brake (EPB) device for electronically controlling the driving of a parking brake has been increasing in the parking brake device of a vehicle, and various prior arts have been developed and reviewed In fact. Such an electronic parking brake apparatus supplies a current in consideration of a circumstance environment in a control unit in response to a signal of a driver, for example, a clutch, an EPB button, an auto hold button, or the like to operate a brake motor, And when the EPB button is pressed in an emergency in a running state, the brake oil is introduced into the caliper, and the hydraulic pressure is increased to obtain the emergency braking force with the increased braking force by the increased hydraulic pressure.

Such an electronic parking brake apparatus employs a spindle unit as a multi-component piston for brake calipers of hydraulic and / or mechanical and / or electromechanically driven disc brakes.

Wherein the spindle unit comprises a spindle and a nut screwed on the spindle and moving back and forth along the direction of rotation of the spindle, and when the spindle rotates in a direction in which the screw is loosened, the nut moves forward in the outward direction, And presses against the brake pads to generate braking force.

In order to process screws on the outer circumferential surface of the spindle shaft portion or to machine screws on the elongated bolts, rolling dies are used. As an example of such rolling dies, Korean Registered Utility Model No. 20-0166606 (registered on October 27, 1999) A base plate for supporting the base material cut to a predetermined length; A fixing plate having a link cylinder connected with a link so as to switch the position of the base plate; A slide plate having a link cylinder connected to a link through a medium so as to change the position of another support plate located on the other side of the support plate, and slide-guided toward the guide plate of the guide rod; An entry cylinder for advancing and retracting the slide plate; A screw machining apparatus for a long-bolt automatic molding machine is provided, which comprises a pair of spiral forming rolls for spirally winding a spiral for forming a screw so that the spiral part is rapidly rotated so that a spiral part is formed at one end of the base material.

In order to control the quality of the spindle, the starting point of the screw to be formed on the outer circumferential surface of the spindle must be kept constant. Otherwise, the moving distance of the nut coupled with the spindle becomes unstable and the pressing force applied to the brake pad The emergency braking force can not be obtained, so that it is difficult to control the quality of the emergency braking device.

According to the above-described prior art, it is difficult to process a screw with a constant screw starting point in the spindles supplied when the screw is machined on the spindle shaft portion, so that productivity of the spindle is lowered and quality control is difficult.

Korean Registered Utility Model No. 20-0166606 (Date of Registration October 27, 1999)

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spindle for a spindle in which a spindle material is disposed on a jig adjacent to a pair of rolling rollers, And to provide an improved spindle threading apparatus.

In order to achieve the above object, a spindle threading apparatus according to the present invention is a spindle threading apparatus in which a shaft portion of a spindle material is supported by a support member and a screw is formed on a shaft portion by two rolling rollers, A jig is provided adjacent to an end of the rolling roller by a bracket to support a flange of the spindle, the jig being formed of a V-shaped block, And a stopper fixed to the groove formed on the front side of the block.

And a support for supporting the spindle material on the upper surface of the shaft portion of the spindle material so as not to move when the rolling rollers are engaged with the shaft portion of the spindle material after the spindle material is disposed on the receiving element

The stopper preferably has a lower portion fixed to the block and an upper portion protruding higher than a V-shaped bottom of the block so as to support the flange of the spindle material.

When the spindle material is seated on the jig, a pusher is provided on the back of the jig so that the front surface of the flange of the spindle material is pressed against the stopper provided in the jig while the shaft is disposed on the receiving member and the upper surface of the shaft is supported by the retainer / RTI >

The spindle material constituted by the shaft portion, the flange and the head supplied by the fingers according to the present invention is characterized in that the flange is supported by the jig which is supported on the shaft portion by the receiving portion provided between the threaded rolling rollers and adjacent to the end portion of the rolling rollers The screw can be formed by the rolling rollers at a certain position with respect to the projection as the screw starting point formed in the flange with the front surface of the flange being supported by the front stopper provided in the jig, The start position is kept constant, and the quality of the spindle unit is easily managed and the productivity is improved.

1 is a schematic perspective view of a spindle threading apparatus according to the present invention;
Fig. 2 is a partial perspective view showing a jig of the screw machining apparatus of Fig. 1; Fig.
3 is an exploded perspective view of the jig of Fig.
Figure 4 is a schematic cross-sectional view of Figure 1;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings showing embodiments of a spindle threading apparatus according to the present invention.

Figs. 1 to 4 are for machining a screw on a shaft portion of a spindle material to be processed by the spindle threading apparatus of the present invention. Fig. The spindle material to be threaded by the threading apparatus of the present invention includes a head 1, a flange 2 and a shaft portion 3, and a protrusion 4 is formed on the flange 2 as a reference point at which the thread starts .

The spindle threading apparatus according to the present invention includes two rolling rollers 310 and 311 having screws formed on a surface thereof and forming a screw on a shaft portion of a spindle material and two ' A jig 330 fixed between the brackets 320 and 321 adjacent to the ends of the rolling rollers, a support member 340 disposed between the rolling rollers and supporting a shaft portion of the spindle material, 340 to support the spindle material so that it does not move when the spindle material is engaged by the rolling rollers.

The jig 330 is formed of a V-shaped block 331 and has a stopper 335 fixed to a groove 332 formed at a front side thereof. The lower portion of the stopper 335 is fixed to the block 331 and the upper portion of the stopper 335 is disposed so as to protrude higher than the V-shaped bottom of the block 331.

Thus, the upper portion of the stopper 335 supports the front side of the flange 2 of the spindle material disposed on the V-shaped block 331. The stopper 335 is disposed between the vertical portions of the two brackets 320 and 321 and has a fastening hole 336 formed at a lower portion thereof and fastening bolts 337 passing through the block 331 from the back side of the jig 330. [ And is fixed to the block 331.

A pusher 370 is provided on the rear side of the jig 310 and a shaft 3 is provided on the supporting member 340 when the spindle material supplied by a finger not shown in the drawing is seated on the jig 330. [ The pusher 370 pushes the front surface of the flange 2 of the spindle material into close contact with the stopper 335 provided on the jig 330 with the upper surface of the shaft portion being supported by the support 350.

Since the spindle flange 2 is disposed on the jig 330 and the shaft portion 3 is supported by the support member 340 and the upper surface of the shaft portion is supported by the support 350, The support rollers 310 and 311 spaced apart from each other move in contact with the shaft portion 3 so that the support 350 supporting the shaft portion 3 of the spindle material on the upper surface thereof is in contact with the shaft portion 3, The two rolling rollers 310 and 311 are rotated to form a screw on the shaft portion 3 of the spindle material.

In this case, as shown in Fig. 3, when the projections 4 projecting radially outward from the shaft portion 3 are horizontally arranged on the flange 2 of the spindle material, The screws to be machined on the shaft portion 3 start at an angle of 90 degrees with respect to the protrusion 4 so that the rolling rollers 310 and 311 of the shaft portion 3 are engaged with the opposite side surfaces of the shaft portion 3, Since the spindle materials are preliminarily aligned, that is, the head 1 is gripped by the finger in a state in which the projections 4 of the flange 2 are horizontally aligned, and is supplied to the jig 330 in a snug manner, The starting points of the screws of the spindle materials processed by the spindle materials are kept the same.

However, the projections 4 of the flange 2 are not necessarily aligned horizontally, but may be arranged at different angles. 3, the supplied spindle material is rested on the jig 330 of the threading apparatus by the fingers in the same alignment state, so that the rolling rollers are moved in the same direction as the spindle material, The starting points of the screws to be machined are rotated to be equal to each other so that the quality of the spindle unit can be constantly and efficiently managed.

After the screw is machined on the shaft portion of the spindle material which is supplied in a state previously aligned by the fingers as described above, the two rolling rollers are moved away from the shaft portions in both lateral directions, and then the fingers are moved to move the head of the processed spindle unit And transported for subsequent processing.

The spindle threading apparatus of the present invention can be used to machine a screw while keeping the starting point of the screw formed on the shaft portion of the spindle for the emergency braking system of the vehicle constant.

310, 311: Rolling rollers 320, 321: Brackets
330: Jig 331: Block
332: groove 335: stopper
336: fastening hole 337: fastening bolt
340: Support member 350: Supported area
370: pusher

Claims (4)

A spindle threading apparatus in which a shaft portion of a spindle material is supported by a support member and a screw is formed on a shaft portion by two rolling rollers (310, 311)
A jig (330) is provided adjacent to the end of the roller by a bracket to support the flange of the spindle material,
The jig 330 is formed of a V-shaped block 331 and has a groove 331 formed on the front side of the block 331 to support the front side of the spindle flange 2 disposed on the block 331 And a stopper (335) fixed to the spindle (332).
The method according to claim 1,
Further comprising a support (350) for supporting the spindle material above the bearing member (340) and then supporting it on the upper surface of the shaft portion of the spindle material so as not to move when the rolling rollers are engaged with the shaft portion of the spindle material Threading device.
The method according to claim 1,
The stopper 335 is fixed to the block 331 at its lower portion and protrudes higher than the V-shaped bottom of the block 331 at its upper portion to support the front surface of the flange 2 of the spindle material And the spindle threading device.
The method of claim 3,
When the spindle material is seated on the jig 330, the shaft portion 3 is disposed on the supporting member 340 and the upper surface of the shaft portion is supported by the support 350. In this state, Is provided with a pusher (370) on the rear side of the jig (330) so as to push it against the stopper (335) provided in the spindle (330).

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