Brush Honing Machine

Abstract

The present invention provides a brush honing device comprising: a jig module in which a workpiece is fixed to an upper surface; a brush module disposed on the upper side of the jig module and lowering a brush that rotates toward the workpiece fixed to the jig module to process the workpiece; a processing start height measuring module that measures the processing start height of the brush by contact with the circumference of the brush of the brush module; and a control unit electrically connected to the brush module and the processing start height measuring module, which controls the lowering height of the brush module by the processing thickness based on the processing start height of the brush measured by the processing start height measuring module, thereby measuring the processing start height of the brush for each area along the brush width direction of the brush processing the workpiece with the processing start height measuring module, and controlling the lowering distance of the brush in response to uneven wear of the brush when processing the workpiece.

Description

Technology Field

[0001] The present invention relates to a brush honing processing device, and more specifically, to a brush honing processing device that grinds the surface of a workpiece fixed to a jig on which the workpiece is fixed using a roll-type brush. Background Technology

[0003] Generally, among machine tools, there are vertical machine tools (vertical machining centers) in which the spindle is positioned vertically to machine a workpiece fixed on a table, and horizontal machine tools in which the spindle is positioned horizontally.

[0004] When these vertical or horizontal machine tools use the same tool for a long time to process a workpiece, the tool tip wears out or breaks, resulting in machining errors or incomplete machining.

[0005] Conventionally, to resolve the aforementioned problem, a measuring sensor was provided to measure the degree of tool wear, and machining was performed or the tool was replaced by reflecting the degree of tool wear.

[0006] However, conventionally, there was a problem in that uneven wear of the tool was not taken into account.

[0007] For prior art, refer to published patent No. 10-2023-0055771 (April 26, 2023). The problem to be solved

[0009] The present invention aims to provide a brush honing device capable of controlling the downward distance of a brush in response to uneven wear of the brush when processing a workpiece, by measuring the starting height of the brush in each area along the brush width direction of the brush using a starting height measurement module. means of solving the problem

[0011] A brush honing device according to the present invention comprises: a jig module in which a workpiece is fixed to an upper surface; a brush module disposed above the jig module and lowering a brush that rotates toward the workpiece fixed to the jig module to process the workpiece; a processing start height measuring module that measures the processing start height of the brush by contact with the circumference of the brush of the brush module; and a control unit electrically connected to the brush module and the processing start height measuring module, which controls the lowering height of the brush module by the processing thickness based on the processing start height of the brush measured by the processing start height measuring module.

[0012] At this time, the brush module according to the present invention comprises a spindle body having a length in the horizontal direction that selectively rotates, a roll-type brush coupled to the spindle of the spindle body and rotating in conjunction with the rotation of the spindle, and a transfer means for selectively transferring the spindle body along the X, Y, and Z axes.

[0013] Herein, the transfer means according to the present invention comprises a Z-axis transfer means connected to the spindle body and transferring the spindle body along the vertical Z-axis line, an X-axis transfer means connected to the Z-axis transfer means and transferring the Z-axis transfer means along the horizontal X-axis line, and a Y-axis transfer means connected to the X-axis transfer means and transferring the X-axis transfer means along the front-rear Y-axis line.

[0014] And the processing start height measuring module according to the present invention comprises a support body disposed on one side of the jig module, a shaft rotatably provided in a hollow on the upper side of the support body with a horizontal axis, a contact wheel coupled to one end of the shaft and generating an electrical signal by contacting the circumference of the brush and applying it to the control unit, and an encoder connected to the other end of the shaft and generating an electrical signal according to the rotation angle of the shaft and applying it to the control unit.

[0015] In this invention, the processing start height measuring module according to the present invention further comprises: a shielding cover provided between the contact wheel and the support body to prevent foreign matter from entering between the hollow of the support body and the shaft; a non-contact seal provided in the hollow of the support body to seal the space between the hollow of the support body and the shaft; a bearing provided in the hollow of the support body to rotatably support the shaft; and a bracket provided on the other side of the support body to mount an encoder on the support body.

[0016] In addition, when the circumference of the brush according to the present invention comes into contact with the contact wheel, the brush module moves along the width of the brush, and the processing start height is measured along the width of the brush.

[0017] In addition, the control unit according to the present invention measures the processing start height of the brush using an electrical signal generated from the contact wheel, and based on the measured processing start height, calculates a downward distance equal to a set processing thickness, thereby controlling the lowering of the brush module.

[0018] In addition, it is preferable that the uppermost height of the contact wheel according to the present invention be located on the same line as the height of the processing surface of the workpiece. Effects of the invention

[0020] The effects produced by the brush honing processing device according to the present invention are as follows.

[0021] By measuring the machining start height of the brush machining the workpiece using a machining start height measurement module and reflecting this to calculate the downward distance equal to the machining thickness from the brush's machining start point, the degree of brush descent can be easily controlled when machining the workpiece.

[0022] By measuring the starting height of the brush processing for each area along the brush width direction, the brush's downward distance can be controlled in response to uneven wear when processing a workpiece. Brief explanation of the drawing

[0024] FIG. 1 is an exemplary diagram showing a brush honing processing device according to an embodiment of the present invention. FIG. 2 is an exemplary diagram showing a brush module of a brush honing processing device according to an embodiment of the present invention. FIG. 3 is an exemplary diagram showing a processing start height measurement module of a brush honing processing device according to an embodiment of the present invention. FIG. 4 is an exemplary diagram showing the state in which a brush module according to an embodiment of the present invention descends toward a processing start height measuring module to measure the processing start height. FIG. 5 is an exemplary diagram showing the state in which a brush module according to an embodiment of the present invention descends toward a processing start height measuring module to measure the processing start height. FIG. 6 is an exemplary diagram showing the state of measuring the starting height of processing according to wear in each part along the width direction of the brush according to an embodiment of the present invention. Specific details for implementing the invention

[0025] Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and based on the principle that the inventor can appropriately define the concepts of the terms to best describe his invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention.

[0026] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention; thus, it should be understood that there may be equivalent variations that can replace them at the time of filing this application.

[0027] The present invention relates to a brush honing device that measures the starting height of a workpiece and processes the workpiece using a roll-shaped brush that rotates at high speed while descending by a processing thickness based on the measured starting height, wherein the descending distance of the brush is further applied in correspondence with the degree of wear of the brush to process the workpiece. Referring to the drawings, the invention is as follows.

[0028] A brush honing processing device according to an embodiment of the present invention with reference to FIGS. 1 to 6 comprises a jig module (100), a brush module (200), a processing start height measuring module (300), and a control unit (400), wherein the jig module (100) is provided as a pair such that a workpiece is fixed to an upper surface.

[0029] On the upper side of the above jig module (100), a stage (110) on which a workpiece is placed and a clamp (not shown) for fixing the workpiece placed on the stage (110) may be provided.

[0030] In addition, the jig module (100) can be rotated around a vertical axis in the vertical direction, and to process two workpieces simultaneously, the jig module (100) is preferably provided with a pair as a set and spaced apart from each other at a certain distance.

[0031] And a brush module (200) for processing a workpiece is disposed on the upper side of the above jig module (100).

[0032] The brush module (200) includes a brush (210), a spindle body (220), and a transfer means (230), wherein the brush (210) grinds the surface of a workpiece while rotating at high speed around a center axis.

[0033] At this time, the brush (210) is a wheel-shaped brush that rotates along a horizontal axis, and it is preferable that a pair be provided to correspond to a pair of jigs (110).

[0034] Accordingly, a pair of wheel-shaped brushes (210) are spaced apart from each other at a certain distance, corresponding to the respective positions of the jigs (110).

[0035] And the above pair of brushes (210) are connected to the spindle (221) of the spindle body (220) and rotate in conjunction with the rotation of the spindle (211) to grind the edges of the workpiece on the outer surface of the brushes (210).

[0036] The spindle (221) of the spindle body (220) is provided as a single unit so that the longitudinal direction of the axis forms a horizontal line, and the spindle (221) is mechanically connected to an electric motor (not shown) provided inside the spindle body (220) and rotates by the rotational force generated by the electric motor.

[0037] At this time, the spindle body (220) is connected to a transfer means (230) and can move along the X, Y, and Z axes by the transfer means (230).

[0038] Looking more closely, the spindle body (220) is connected to the lower end of a lifting rod (222) having a length along a vertical line in the vertical direction, and the upper end of the lifting rod (222) is connected to a Z-axis transfer means (231) that transfers the bracket along a vertical line in the Z-axis through the bracket.

[0039] The above Z-axis transfer means (231) is composed of a combination of a linear guide rail and a transfer screw, and selectively transfers the lifting rod (222) along the Z-axis line so that the spindle body (220) moves along the Z-axis line.

[0040] And the above Z-axis transfer means (231) is connected to the Y-axis transfer means (232), and the Y-axis transfer means (232) is also composed of a combination of a linear guide rail and a transfer screw, so that the Z-axis transfer means (231) is selectively transferred along the Y-axis line to move the spindle body (220) along the Y-axis line.

[0041] Additionally, the Y-axis transfer means (232) is connected to the X-axis transfer means (233), and the X-axis transfer means (233) is also composed of a combination of a linear guide rail and a transfer screw, so that the Y-axis transfer means (232) is selectively transferred along the X-axis line to move the spindle body (220) along the X-axis line.

[0042] Accordingly, a pair of brushes (210) coupled to the spindle (221) of the spindle body (220) can be selectively moved along the X, Y, and Z axes by the Z-axis transfer means (231), Y-axis transfer means (232), and X-axis transfer means (233).

[0043] And a processing start height measuring module (300) is placed on one side of each of the above jig modules (100).

[0044] The above processing start height measuring module (300) is provided on one side of the jig module (100) to measure the processing start height of the brush (210). The above processing start height measuring module (300) is provided with a support body (310) having a corresponding height, and a shaft (320) is provided on the upper side of the support body (310) such that its length is horizontal.

[0045] At this time, the shaft (320) is supported by a plurality of bearings (311) so as to be rotatable on the upper side of the body (310), and the circumference of the shaft (320) is sealed by a shielding cover (312) and a non-contact seal (313) to prevent foreign matter from entering around the shaft (320).

[0046] And, at one end of the shaft (320), a contact wheel (330) is provided that generates an electrical signal upon contact with the circumference of the brush (210), and at the other end opposite to the one end, a rotary encoder (340) is provided to convert the angle of the shaft rotating according to the rotation of the contact wheel (330) into an electrical signal and output it.

[0047] At this time, it is preferable that the encoder (340) be fixed to the support body (310) by means of a bracket (314) so ​​that the measuring axis is coaxial with the shaft (320).

[0048] The above contact wheel (330) generates an electrical signal through contact with the circumference of the brush (210), and based on the electrical signal (the lowering height of the brush (210)), the control unit (400) calculates and measures the processing start height.

[0049] Accordingly, the control unit (400) is electrically connected to the brush module (200) and the processing start height measurement module (300), and controls the lowering of the brush module (200) by a preset processing thickness based on the processing start height of the brush (210) measured by the processing start height measurement module (300).

[0050] Here, when the brush (210) processes a workpiece repeatedly, wear occurs on the brush (210).

[0051] Wear occurs differently depending on the width of the brush (210) (uneven wear), and depending on the degree of wear depending on the width of the brush (210), the starting height of the processing differs depending on the width.

[0052] Therefore, if the workpiece is processed by uniformly applying the processing start height of any part of the brush (210) that was initially measured, the problem arises that the brush (210) descends less than the processing thickness, resulting in insufficient processing, or the brush (210) descends more than the processing thickness, resulting in excessive processing.

[0053] In light of this, the brush honing processing device according to an embodiment of the present invention can measure the starting height of processing according to the degree of wear over the width thickness of the brush (210) while moving the contact wheel (330), which has a thickness relatively thinner than the width thickness of the brush (210), along the width thickness of the brush (210).

[0054] At this time, the brush (210) is transported in the width direction by the above-mentioned transport means (230) to measure the processing start height according to the degree of wear over the width thickness of the brush (210), and the lowering height of the brush (210) is controlled by reflecting this.

[0055] The present invention has been described with reference to embodiments illustrated in the drawings, but this is merely illustrative, and those skilled in the art will understand that various modifications and equivalent alternative embodiments are possible therefrom. Accordingly, the true technical scope of protection of the present invention should be determined by the technical spirit of the appended claims. Explanation of the symbols

[0057] 100: Jig module 110: Stage 200: Brush Module 210: Brush 220: Spindle body 221: Spindle 222: Elevator Road 230: Means of transport 231: Z-axis transfer means 232: Y-axis transfer means 233: X-axis transfer means 300: Machining start height measurement module 310: Support body 320: Shaft 311: Bearing 312: Shielding cover 313: Non-contact seal 330: Contact wheel 340: Encoder 400: Control unit

Claims

Claim 1 A brush honing device for grinding the surface of a workpiece with a high-speed rotating brush, comprising: a jig module on which the workpiece is fixed to an upper surface; a brush module disposed above the jig module and lowering a brush that rotates toward the workpiece fixed to the jig module to process the workpiece; a processing start height measuring module that measures the processing start height of the brush by contact with the circumference of the brush of the brush module; and a control unit electrically connected to the brush module and the processing start height measuring module, and controlling the lowering height of the brush module by the processing thickness based on the processing start height of the brush measured by the processing start height measuring module. Claim 2 A brush honing processing apparatus according to claim 1, wherein the brush module selectively rotates a spindle having a length in the horizontal direction to form a spindle body, a roll-type brush coupled to the spindle of the spindle body and rotating in conjunction with the rotation of the spindle, and a transfer means for selectively transferring the spindle body along the X, Y, and Z axes. Claim 3 A brush honing processing apparatus according to claim 2, wherein the transfer means comprises a Z-axis transfer means connected to the spindle body to transfer the spindle body along the Z-axis line in the up-and-down direction, an X-axis transfer means connected to the Z-axis transfer means to transfer the Z-axis transfer means along the X-axis line in the left-and-right direction, and a Y-axis transfer means connected to the X-axis transfer means to transfer the X-axis transfer means along the Y-axis line in the front-and-rear direction. Claim 4 A brush honing processing device according to claim 2, wherein the processing start height measuring module comprises a support body disposed on one side of the jig module, a shaft rotatably provided in a hollow having a horizontal axis on the upper side of the support body, a contact wheel coupled to one end of the shaft and generating an electrical signal upon contact with the circumference of the brush and applying it to the control unit, and an encoder connected to the other end of the shaft and generating an electrical signal according to the rotation angle of the shaft and applying it to the control unit. Claim 5 The brush honing processing device according to claim 4, wherein the processing start height measuring module further comprises: a shielding cover provided between the contact wheel and the support body to prevent foreign matter from entering between the hollow of the support body and the shaft; a non-contact seal provided in the hollow of the support body to seal the space between the hollow of the support body and the shaft; a bearing provided in the hollow of the support body to rotatably support the shaft; and a bracket provided on the other side of the support body to mount an encoder on the support body. Claim 6 A brush honing processing device according to claim 4, characterized in that when the circumference of the brush and the contact wheel come into contact, the brush module moves along the width of the brush and measures the processing start height along the width of the brush. Claim 7 A brush honing processing device according to claim 5, wherein the control unit measures the processing start height of the brush using an electrical signal generated from the contact wheel, calculates a downward distance equal to a set processing thickness based on the measured processing start height, and controls the downward movement of the brush module. Claim 8 A brush honing processing device according to claim 4, characterized in that the uppermost height of the contact wheel is located on the same line as the processing surface height of the workpiece.

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