JP3399658B2 - Abrasive electrodeposition method - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for electrodepositing abrasive grains on a metal grindstone base material. [0002] In order to hold abrasive grains electrodeposited on a grindstone base material,
After activating the surface of the grindstone base material and further applying the undercoat, abrasive grains are multi-layered on the undercoat surface, and temporary plating is applied. Then, only the lowermost layer of abrasive grains in contact with the base plating is temporarily held by the grindstone base material by the temporary plating. Next, after removing the abrasive grains that were not temporarily held and adjusting the degree of concentration of the abrasive grains, permanent plating was further performed to completely electrodeposit and hold the temporarily held abrasive grains. [0003] By the way, the abrasive grains which are not temporarily retained by the temporary plating are manually removed by a worker using a brush or the like or sprayed with water as described in Japanese Utility Model Publication No. 56-14043. Was. [0004] As described above, when the work of adjusting the degree of concentration of abrasive grains after temporary plating is performed manually, the pressing force of a brush or the like against the abrasive grains is made constant. It is difficult to remove the abrasive grains that are not temporarily held, and the concentration of the abrasive grains becomes denser.On the other hand, the temporarily held abrasive grains are also removed and the concentration of the abrasive grains becomes coarse. Occurs. In the case of removing abrasive grains that have not been temporarily attached by spraying water, the force of spraying water on the abrasive grains is not constant, and the same problem occurs. [0005] The present invention has been made in view of the above problems, abrasive
Electrodeposit with uniform concentration of abrasive grains on stone base material
It is an object of the present invention to provide a method for electrodepositing abrasive grains which can be performed as follows. [0006] In order to achieve the above object, the present invention provides a grindstone having a ring-shaped grinding portion having a mountain-shaped cross section.
An abrasive grain electrodeposition method for electrodepositing abrasive grains on a base material, comprising:
Set the jig holding the material down in the plating tank,
A process of applying base plating to the ground part of the base material and the entire circumference of the ground part
And set the opposing net-like enclosures in the enclosure
Fill the abrasive grains and set the jig again in this state in the plating tank
To set the surface of the grinding part and apply temporary plating.
Holds the grindstone base material on a rotatable support member that supports the jig
Position the set jig in the
Therefore, while rotating the grindstone base material, the brush holding means
Therefore, it is pressed against the grinding part of the grindstone base material at a predetermined pressure.
Concentration of abrasive particles remaining on the surface of the grindstone base material while holding the fixed brush
Adjusting the degree and removing the set jig from the support member
And settle again in the plating tank and apply permanent plating,
A step of electrodepositing and holding the abrasive grains temporarily held in the grinding unit;
And wherein to Rukoto and comprising: a. When the support member is rotated, the grindstone base material supported by the support member also rotates, and the surface of the grindstone base material is swept with a brush. Here, the pressing force of the brush is maintained at a predetermined value by the brush holding means, so that the pressing force is too weak to leave the temporarily held abrasive grains, or the pressing force is too strong to temporarily hold the abrasive grains. There is no problem such as removal of the grinding wheel, and the degree of concentration of the grindstone can be adjusted accurately and stably. Referring to FIG. 1, reference numeral 1 denotes an apparatus for adjusting the degree of concentration of abrasive grains of an electrodeposition grindstone for tooth grinding of a curved bevel gear having a ring-shaped grinding portion having a mountain-shaped cross section. In a box-shaped interior that is surrounded on all sides by a side wall plate 11 and opens upward, a turntable 4 that is a support member that supports the grindstone base material 3 of the electrodeposition grindstone is provided. In addition, the grinding surface 3a outside the angled grinding portion of the grinding wheel base material 3
And a brush holding means 5 for holding a pair of brushes 61 corresponding to the inner grinding surface 3b. The brush holding means 5 includes a cylinder 5 erected outside the side wall plate 11.
0, a swing mechanism 51 provided in the cylinder 50 for swinging the rod of the cylinder 50, and a brush holder 6 attached to the tip of the rod of the cylinder 50. The grindstone base material 3 is supported by the turntable 4 while being held by the set jig 2. As shown in FIG. 2, the set jig 2 holds a rib 32 provided around the outer periphery of the grindstone base material 3 at the opening edge of the bowl-shaped cup 21 via an O-ring 2a. Is held down by the lid 22 via the O-ring 2b. Then, a suspension rod 23 having a flange 24 on the outer peripheral surface of the middle part and a screw part 25 at the tip is inserted from above the lid 22, and the screw part 25 at the tip is inserted.
Is screwed into the center of the bottom of the cup 21, the lid 22 is pressed by the flange 24, and both the O-rings 2a and 2b are compressed. Thus, the inside of the cup 21 and the lid 22 is sealed so that the plating solution does not enter. The process of electrodepositing abrasive grains on the grinding surfaces 3a and 3b while holding the grindstone base material 3 on the set jig 2 will be described with reference to FIG. First, the set jig 2 is settled in a plating tank (not shown), and both grinding surfaces 3a and 3b are set.
Is applied with a base plating P1. After that, the set jig 2 is taken out of the plating tank, and the net-shaped surrounding walls FO and FI facing the respective grinding surfaces 3a and 3b all around are set as shown in FIG. Is filled with abrasive grains in the annular gap sandwiched therebetween so that the abrasive grains uniformly contact both grinding surfaces 3a and 3b. Then, in this state, the set jig 2 is lowered again in the plating tank, and the ground surfaces 3a and 3b are subjected to temporary plating P2. Thereafter, the set jig 2 is taken out of the plating tank, and the surrounding walls FO and FI are removed to remove abrasive grains that have not been temporarily attached. In this state, as shown in FIG. 4A, the abrasive grains G electrodeposited and held by the temporary plating P1.
a, the abrasive grains Gb hooked between the abrasive grains Ga, and the abrasive grains Gc attached to the upper portions of the abrasive grains Ga · Gb are adhered on the ground surfaces 3a and 3b. Here, the abrasive G
It is necessary to remove the abrasive grains Gb and Gc so that a does not fall off. However, if the abrasive grains Gb and Gc are manually removed, the abrasive grains Gb remain without being removed, or conversely, the abrasive grains Gb and Gc are removed. May even be removed. Therefore, the set jig 2 is moved to the turntable 4 so as not to cause such an adverse effect.
The turntable 4 is provided with a plurality of seats 41 as shown in FIG.
1 is placed on the seat 4 to position the set jig 2 in the vertical direction. In addition, the turntable 4 has 3
A claw piece 42 is provided upright at a location, and comes into contact with the outer peripheral surface of the cup 21 so that the center axis of the set jig 2 and the center axis of the turntable 4 are aligned. A rotating shaft 43 that penetrates the bottom plate 12 of the apparatus 1 is attached below the rotating table 4, and a motor (not shown) is connected to the rotating shaft 43 via a belt 44 to rotate the rotating table 4. It is configured as follows. Therefore, when the turntable 4 is rotated by the motor, the grindstone base material 3 rotates together with the set jig 2 placed on the turntable 4. On the other hand, the brush holder 6 is swung by the rocking mechanism 51 to a position where the angled grinding portion of the grindstone base material 3 enters between a pair of brushes 61 attached to the brush holder 6, and is moved to the angled grinding portion by the cylinder 50. It is pressed. According to this, each brush 61 is attached to each of the grinding surfaces 3a and 3b by the cylinder 50 due to the inclination of each of the grinding surfaces 3a and 3b on the outer side and the inner side of the angled grinding portion.
Are pressed at a predetermined pressure determined by the pressing force. The rotation of the grindstone base material 3 causes the respective brushes 61 to be ground 3a and 3b.
The abrasive grains Gb and Gc that are not temporarily held or are caught in contact with the entire circumference of the workpiece are completely removed. in this case,
The grindstone base material 3 is rotated at a constant rotation speed, and each brush 61
Of the abrasive grains Gb and Gc under constant conditions over the entire circumference of the grinding surfaces 3a and 3b in combination with the fact that the pressing force is maintained at a predetermined value.
Is removed to obtain the state shown in FIG. 4B, and the abrasive grains G
The concentration of “a” is constant, and no density occurs. Then, when the grindstone base material 3 is rotated a predetermined number of times and the abrasive grains Gb and Gc that are not temporarily held are sufficiently removed, the cylinder 50 is operated to raise the brush holder 6, and the swing mechanism 51 further moves the brush. The holder 6 is retracted from the space above the setting jig 2. After that, the set jig 2 is lifted and taken out of the apparatus 1 and returned to the plating tank again to perform final plating P3.
And the abrasive grains Ga temporarily held on the grinding surfaces 3a and 3b.
Is firmly electrodeposited and brought into the state shown in FIG. 4 (c), and finally, a predetermined post-treatment such as washing with water is performed to complete the electrodeposited grindstone. In the above embodiment, the case where the degree of concentration of the abrasive grains is adjusted with respect to the grindstone base material having two ground surfaces has been described. However, the flat surface having one ground surface on the outer peripheral surface of the grindstone base material has been described. The present invention can also be applied to an electrodeposition grindstone for grinding and other types of electrodeposition grindstones. In this case, the brush may be pressed against the ground surface by the action of the swing mechanism. As is apparent from the above description, according to the present invention, the concentration of the abrasive grains can be adjusted to be constant, and the quality of the electrodeposition grindstone can be stabilized. .

[Brief description of the drawings] FIG. 1 is a perspective view showing the configuration of an embodiment of the present invention. FIG. 2 is a sectional view showing a configuration of a set jig. FIG. 3 is a front view showing the configuration of the turntable. FIG. 4 is a diagram showing an electrodeposited state of abrasive grains on a ground surface. [Explanation of symbols] 1 device 2 set jig 3 Whetstone base material 4 Turntable 5 cylinder 6 brush holder 3a Grinding surface 3b Grinding surface 61 brush

Continuation of the front page (72) Inventor Mutsumi Watanabe 1-10-1 Shinsayama, Sayama-shi, Saitama Honda Engineering Co., Ltd. (56) References JP-A-5-245760 (JP, A) JP-A-62-87145 (JP, A) JP-A-61-25775 (JP, A) JP-A-56-163879 (JP, A) JP-A-1-97861 (JP, U) JP-A-56-14043 (JP, Y2) ( 58) Field surveyed (Int. Cl. ⁷ , DB name) B24D 3/06 B24D 3/00

Claims (1)

(57) [Claims] [Claim 1] A grindstone having a ring-shaped grinding portion having a mountain-shaped cross section
An abrasive grain electrodeposition method for electrodepositing abrasive grains on a base material, comprising:
Set the jig holding the material down in the plating tank,
A process of applying base plating to the ground part of the base material and the entire circumference of the ground part
And set the opposing net-like enclosures in the enclosure
Fill the abrasive grains and set the jig again in this state in the plating tank
To set the surface of the grinding part and apply temporary plating.
Holds the grindstone base material on a rotatable support member that supports the jig
Position the set jig in the
Therefore, while rotating the grindstone base material, the brush holding means
Therefore, it is pressed against the grinding part of the grindstone base material at a predetermined pressure.
Concentration of abrasive particles remaining on the surface of the grindstone base material while holding the fixed brush
Adjusting the degree and removing the set jig from the support member
And settle again in the plating tank and apply permanent plating,
A step of electrodepositing and holding the abrasive grains temporarily held in the grinding unit;
A method for electrodepositing abrasive grains, comprising: