JPS59196159A - Automatic wheel changer - Google Patents

Abstract

PURPOSE:To make the high-speed rocking motion of a wheel head achievable as well as to improve its working properties, by separating a captioned device, which is additionally attached to a machine grinding a work surface for super finishing as a mirror form under pressure with the end face of a sticklike wheel subject to a rocking motion, from the wheel head. CONSTITUTION:Each sticklike wheel 1 whose one end is formed into the specified curvature is lined up in a row and housed inside a frame 2, while a wheel magazine A is made up in structure so as to cause these wheels 1 to be pressed and held against a front wall plate 2a by a spring 3 via a force fit body 4. This magazine A is tightly set up to a base plate 5 on a movable table 6 installed on a fixed table 7 free of movement in both directions. In addition, a wheel force fit mechanism B comprising a wheel force fit push 12 being free of vertical motion along a guide rod 11 supported via a bracket 9 is set up at the front end part of the base plate 5. And, further each wheel 1 split out of the magazine A by the push 12 with operation of a cylinder 15 is inserted into the inside of a holding hole of a wheel holding part C installed at the lower side in front of the base plate 5 and made so as to be held therein.

Description

[Detailed Description of the Invention] (a) Industrial Application Field Jin's invention applies pressure to the end surface of a workpiece while applying appropriate rocking motion to a bar-shaped grindstone, and superfinishes the surface to a mirror-like finish. This is used in super finishing machines for machining, and is used in automatic grindstone exchange devices to load a new grindstone into the grindstone head or to replace the grindstone when the grindstone in the grindstone head becomes too small.

(b) Prior Art For example, when finishing a ball groove formed on the outer periphery of a ball bearing inner ring, the inner ring of a bearing supported by a rotating jig is
A grindstone is provided whose center of oscillation corresponds to the center of curvature of the ball groove, and the end face of the grindstone is pressed against the ball groove of the inner ring of the bearing while applying oscillation to the grindstone to make the ball groove mirror-like. A super-finishing machine that provides super-finishing was used.

This type of super finishing machine requires an automatic grindstone exchange device for loading a new grindstone into the grindstone head or replacing the grindstone in the L grindstone head when it becomes too small. By the way, the conventional automatic grindstone exchange device is integrated into a grindstone head which is interlocked with rocking motion, and therefore the inertial force of the grindstone head increases, resulting in a disadvantage. Therefore, the grindstone head generally swings at a high speed of about 20Q to iθθ/miyu, and in order to reduce the inertial force, the lighter the head, the better. Furthermore, since the automatic grindstone exchange device is integrated into the grindstone head, the mechanism becomes complicated and the workability of replacing parts during setup changes is poor.

(c) Purpose of the Invention This invention enables faster rocking motion of the grindstone head by separating it from the grindstone head, has a simple structure, has good workability, and is highly versatile. The purpose is to provide a device.

B) Structure of the Invention This invention provides a grindstone magazine in which bar-shaped grindstones, each of which has one end surface formed in advance with a predetermined curvature, are housed in a line in a row;
A grindstone pushing mechanism that cuts out the bar-shaped grindstones in the grindstone magazine downward at a time, a grindstone holding part that penetrates and holds the bar-shaped grindstones cut out from the grindstone magazine into a holding hole by this grindstone pushing mechanism, and an elastic The grindstone magazine and the grindstone pushing mechanism are separated from the swing head. , the gist is an automatic grindstone exchange device disposed on a board that reciprocates with a partial stroke toward a work center.

(E) Embodiment First, an embodiment of an apparatus in which the present invention is applied to superfinishing of a ball groove formed on the outer periphery of a bearing inner ring will be described with reference to FIGS.

The device according to the present invention includes a grindstone magazine (A), a grindstone pushing mechanism (B), a grindstone holder (O), a grindstone pressurizer'i (D
) and fixed position@structure (K).

As shown in FIGS. 1 to 3, the grindstone magazine (A) stores bar-shaped grindstones fli, each of which has one end surface formed with a predetermined curvature, in a line inside a frame (2), and stores these grindstones il+
is placed at the rear end of the grindstone ill by means of a spring (3) for maintaining alignment of the grindstone, and is pushed toward the front wall plate (2a) of the frame (2) via the pushing body (41) housed in the frame (2). The grinding wheel magazine (A) is fixedly arranged on the base plate (6), and the base plate (5) is made to be able to move vertically and horizontally in the first direction. The movable base (6) is installed on the fixed base (7) so as to be slidable in the left and right direction in FIG.
7) Screw 1- of the board moving cylinder (8) installed above
Connected to the tip of the rod. Therefore, when the moving sill (8) is moved, the board (5) moves in the left and right direction via the movable base (6), and along with this, the board! 5i The grindstone magazine (A) in which K identification is placed also moves.

'The grinding wheel pushing base (B) is shown in Figures 1 to 311 K: As shown, apply one glare of Glaxoto f9) f9t to the front end of the board (5) corresponding to the front of the above-mentioned grindstone magazine (A),
Each fracket (9t f9f slip $50: (10;
In addition to providing a large amount of rotatable
) to support the guide salary tllll between. Then, the elevating body (13)'a, which is integrally attached with the guide shaft (the grindstone pushing button 02), is fitted so as to be slidable in the vertical direction as shown in FIG. Wire α4)
The above-mentioned pulley (1o7 (lot Ka!) is connected, -The wire 0→One end of the pulley (1o7 (lot Ka!) is connected to the tip of the piston rond of the grindstone pushing sill (16) installed at the rear lower part of the base plate (5), and the other end is A tension spring (17) K is connected to a pin 0 protruding from the upper part of the rear end of the base plate (5).Therefore, when the grindstone pushing sill (15) is driven and the piston rond is moved back and forth, , the elevating body 03) is lowered along the guide bar (If) K for one year via the wire 04), and the grinding wheel MA/Gazine (A) is moved along the button (12) K to which the elevating body UK is attached. After the bar-shaped grindstone (1) at the forefront end is cut out downward, the grindstone pushing shilling I+'+
When the air supply is stopped and the inside of the cylinder chamber is opened, the elevating body 03) moves up along the guide rod (11) via the wire 1 due to the elasticity of the tension spring (I7), and along with this, the button (12) is also raised and returned to its original position. When the frontmost bar-shaped grindstone jll in the grindstone magazine (A) is cut out, the entire bar-shaped grindstone jll is moved forward by the holding spring (3) via the pushing body (4), and the bar-shaped grindstone Whetstone (
1) is cut down tree by tree.

As shown in FIGS. 7 to 4, the grindstone holder (0) has a cover plate 09) attached to the end face of the holder main body (18) having a groove so as to close the opening side of the groove. Rod-shaped whetstone (1)
A holding hole (20) through which only wood can pass is provided, and a carbide liner 1) is attached to the inner peripheral surface of the holding hole (20). Then, a window hole ``-'' communicating with the holding hole vO) is opened below the cover plate (+9), and the base end is connected to the holding hole t in the window hole (22).
20) Slideably insert the holding member protruding into the
The holding member area) and the window hole are closed and the cover plate (+9) K is closed.
A holding spring (25j f) is interposed between the attached spring holder 4j. Therefore, the bar-shaped grindstone il+ cut out from the grindstone magazine (A) is held down once in the holding hole (7!0). , is elastically held within the retainer via a retaining spring (two retaining members).

A swinging arm (27
) are integrally fixed, and two wooden guide shafts 8) (c) are mounted on the swing arm (2?) so as to be movable in the vertical direction in FIGS. 7 and 2. Attach the two guide shafts (c) (short index cylinder cylinder 9 to 28 &G'IO) correctly, and place the piston rond tip of the cylinder (incorporated) into the above-mentioned swing arm η. Attach. Therefore, when the cylinder (291) is driven and its piston rond is expanded or contracted, the swinging arm to which the piston rond is fixed (the two arms are fixed to the swinging shaft □□□, so the cylinder cylinder 9)
The main body side of the cylinder moves up and down in the vertical direction in FIG.
moves by a predetermined stroke. In addition, the above mounting plate (
30) is a grindstone pressurizing cylinder (31) whose piston rond can freely slide in the vertical direction in Fig. 7, and a metal fitting - is fixed to the tip of the piston rond of the cylinder pl+. A movable member that is expandable and retractable in the left-right direction as shown in FIG.
The receiver uses a return spring (decoy) in the darkness between the Kinheikoku 7 movable member 03), and usually the return spring (3Etl) the receiver presses the movable member towards the opposite side of the metal fittings and pressurizes the grindstone. Lever (3o
) is positioned above the holding hole (b)) of the grindstone holder 5(0) fixed to the cylinder (29).

As shown in Figure 4, the fixed position a structure (K) is
) is integrally fixed with a fixed position cam having four parts (37) formed at predetermined positions at the end of the supporting frame (37).
Positioning arm (40) with a newly curved step-like shape at the tip
) is pivotally mounted, and a presser roller (41) is rotatably attached to the tip of this positioning arm holder (4).
0) By constructing a positioning cylinder η between the rear end and the rear end of the support frame (39) and retracting the piston rond, the positioning arm can be created! 40) in the counterclockwise direction in the figure, and move the presser roller (41) housed at the tip of the positioning arm joint (40) to the four parts (
When engaged within 3η, the fixed position cam zheng) is fixed. Therefore, the positional deviation of the swing shaft (26) due to reaction when stopped is immediately corrected by the engagement of the presser roller (Iil) with the recess (37) of the fixed position cam link, and the swing 't '
ifi t26t is accurately positioned and fixed at a predetermined position.

The above is an example of the configuration of an apparatus in which the present invention is applied to superfinishing a ball groove formed on the outer periphery of a support shaft.Next, the operation of this apparatus will be explained.

First, when a detector (not shown) detects whether the grinding wheel fil is worn out, the positioning cylinder ← piston rond moves back and the positioning arm 0) swings counterclockwise in Fig. 2. , the presser roller (4 parts) attached to the tip of the positioning arm frame is engaged in the recess (3'O) of the fixed position cam.
The positional deviation of is corrected, and the swing width (2t;
8), move the board (5) to the right in Figure 3, and remove the grinding wheel magazine (A) and the grinding wheel loading mechanism (B) that can be accessed on the board (5). ) is the work (W)
move in a direction perpendicular to the axial direction. Then, the grindstone press lever 6 of the grindstone pressurizing mechanism (D) is placed directly above the grindstone magazine (A) and the grindstone pushing plate 494 ('') B: the grindstone holding part (0) located above the workpiece (W). ) to the return spring (3
6) against the grindstone magazine (A) and the grindstone pushing mechanism (
Push it in the moving direction of B), and insert the most advanced bar-shaped grindstone (1) of the grindstone magazine (A) into the holding hole (0) of the grindstone holder (0).
position it directly above. In this state, use the cylinder for pushing the grindstone (
+5) moves in and out of the piston rond, lowers the lifting body via the wire (14) against the g1 tension spring I), and lowers the button (1) attached to the lifting body 03). According to I2), the bar-shaped grindstone il+ at the frontmost end of the grindstone magazine (A) is cut downward, and the bar-shaped grindstone (1) is gradually inserted into the holding hole (20) of the grindstone holder (0) and the butt-shape is inserted. When (12) reaches the lowest position, the holding hole is first opened (0)
The tip of the tm abrasive whetstone (1) held within the tm wear whetstone (1) is caused to deviate downward, and when the whetstone reaches the lowest position, the whetstone holding part (
0) is passed through and held at a predetermined position in the holding hole (20).

After that, the air supply to the whetstone pushing cylinder 95) is stopped, the cylinder base is released, and the elevating body [131 is forced through the wire (circle) by the elasticity of the opening spring (+7).
At the same time, the bar-shaped grindstone (1) in the grindstone magazine (A) is entirely moved up to the pushing body ( 4)
It is moved forward by the holding spring (3) via the holding spring (3). Next, the piston rod of the substrate moving cylinder (8) is released to move the substrate (6) to the left in FIG. Return B) to its original position. Then, the grindstone pressure lever (3) of the grindstone pressure mechanism (D) that was pushed away by the grindstone magazine (A) and the grindstone pushing mechanism (B) returns, and the force of the force of p4 (3G) pushes the grindstone holding part (0) When the grindstone pressure lever (35) of the grindstone pressure 4'A (D) returns to the position directly above the holding hole (20) of the grindstone holder (0), At the same time, the piston rod of the positioning cylinder 021 protrudes and the positioning arm (40) swings clockwise in FIG. The swing shaft (26) comes out of the recess (37) of the support (9) and returns to the normal machining cycle.

The piston rond of the short index cylinder (29) is moved in and out, and the short index cylinder! 2
97, the main part of which is attached to the main part of the grinding wheel is lowered by a predetermined stroke. Hold 5 (0
) The tip of the bar-shaped grindstone fllO held by the handlebar is inserted into the groove of the workpiece 0. Next, when air is supplied to the head side of the grindstone pressurizing cylinder (3I), the piston rod of cylinder 01) retreats and lowers the grindstone pressurizing lever, and the rod-shaped grindstone ( 1) to press the end face of the bar-shaped grindstone t1+ against the workpiece (W). In this state, the whetstone head is swung around the swing axis, and the bar-shaped whetstone (1
) to super finish the soak (W). When the bar-shaped grindstone (1) wears out, the piston of the grindstone pressurizing cylinder (3I) passes through the drain hole (31a) provided in the sliding direction of the cylinder (31), and this causes the head of the grindstone (31) to pass through the drain hole (31a). As the air escapes from the side, the pressure drops, and a detector detects this and sends an electric signal to replace the grinding wheel.

Thereafter, by repeating the above operation, the damaged grindstones can be automatically replaced one after another.

Next, an embodiment of an apparatus in which the present invention is applied to superfinishing a ball 1 formed on the inner periphery of a bearing outer ring will be described with reference to FIGS. 5P to 72.

This "AK" is a grindstone magazine (A), a grindstone push plate I (
El), grinding wheel pressure, holding 'f+TX (0), grinding wheel pressure mechanism (
D) and localization b-)' mechanism (In). Note that the fixed position mechanism (E) is the same as that of the above-described embodiment, so its explanation will be omitted.

As shown in Fig. 7 to Fig. 1, the grindstone magazine (A) stores bar-shaped grindstones whose one end surface has been formed with a predetermined curvature in advance in a line inside a frame. Rod-shaped whetstone (
431 view... is the board to which the frame is attached (state and whetstone case 3)
) Crushing...The grindstone alignment holding spring ← η installed between the pushing body (9) placed at the rear end and housed in the frame ■ towards the front wall plate (44a) of the frame surrounding The bar-shaped grindstone (43) at the forefront of the bar-shaped grindstone (43) is held by pressing it evenly, and a grindstone passing hole portion through which only the bar-shaped grindstone (143) can pass is provided below where the bar-shaped grindstone (43) at the frontmost end is located. Grindstone pushing mechanism (E)
A bar-shaped grindstone (4a facing downward) is taken out. The board j415) with the whetstone magazine (A) attached is attached to the support frame (
49) A guide member installed vertically adjustable in the rack +
511 is then engaged with the force of the pinion, and the pinion sister is fixed to the output shaft t54) of the support claim (low reactor 153 for board movement fixed to the bend), and attached to the low reactor mark for board movement. When the output shaft (64) is driven and rotated, the substrate side moves in the horizontal direction with respect to the support frame 19j via the pinion and the rack (6]). In addition, a low reactor for moving the substrate (53i 1c)
The pinion rotation angle detection sensor Q5 (g) is installed. This sensor extension 6) controls the low reactor actuator for moving the board and rotates the pinion at a predetermined rotation angle. The horizontal board (4b) is moved back and forth with a constant stroke.

As shown in FIGS. 7 and 10, the grindstone pushing mechanism (B) has a grindstone pushing cylinder t5 (3) at the base 45).
are integrally provided, and the piston rond of this whetstone pushing cylinder (56) and the frame of the whetstone magazine (A)
The grindstone passing hole (481) is integrally housed with the grindstone pushing button 6η disposed above the grindstone passing hole (481) via the gradient ω, and the piston rond of the grindstone pushing cylinder (56) is protruded. Magazine (A)
The bar-shaped grindstone at the front end is cut downward. Then, when the bar-shaped grindstone 2) at the front end in the grindstone magazine (A) is cut out and the button (57) rises and returns to its original position, the bar-shaped grindstone f431143 in the grindstone magazine (A)...・
The whole is moved forward by the holding spring (47) via the pushing body (bar), and the bar-shaped grindstone (1) is cut out piece by piece.

As shown in Figures 7.2 to 7j, the magnet holding line (G) is attached to the end face of the holding part main body (59) provided with the IEII groove located at the work center so as to close the opening side of the groove. A cover plate is attached to form a holding hole f611 through which only the bar-shaped grinding wheel and the wood can pass, and a carbide liner bell is attached to the inner peripheral surface of this holding hole (61). A window hole (63) communicating with the holding hole G11 is opened below the cover plate 16111, and a holding member shaft whose tip protrudes into the holding hole G11 is slid into the window hole (63). Freely insert and insert this maintenance member (6
The holding spring (661) is compressed between 4 and the spring holder installed in the cover plate to close the window hole (iilfl). The cut out bar-shaped grinding wheel is located in the holding hole (61).
The holding member is inserted into the holding hole and is elastically held by the holding spring field via the holding member (circle).

As shown in Fig. 1-, Fig. 73, and Fig. 1g, the grinding wheel pressure mechanism (D) has a swinging arm fixed integrally to the swinging axis of the swinging board lifter (F). , this swing arm +61i1 is integrally fixed, and two guide shafts [F]'! t6! Mounting plate σD with guide shaft (short index cylinder C?0 on Ili91 tG9+)
The piston rond of the cylinder (70+) is fixed to the swing arm (68). Therefore, by moving the piston rond of the short index cylinder (company) 1 back and forth, the piston Stop Rondo 7'
CAb Rib arm (6 problems) The main body side of the swing axis (cylinder σ0 because it is fixed to the helmet) moves up and down, and accordingly the main body side of the cylinder σ0) is integrated with the mounting plate (company) with the same name.
moves by a predetermined stroke. In addition, the mounting plate (71
) is a grinding wheel pressure cylinder e721 'e whose piston rod can freely pulsate in the vertical direction of the cutting edge.The piston rod of this grinding wheel pressure cylinder Q is fixed to the piston rod, and the moon ζ holder is integrated. A grindstone pressure lever glaze with a carbide liner affixed to the bottom surface of the tip is housed in this holder (2) so that it can slide freely in the horizontal direction, and this grindstone pressure lever (long window formed in 751) Insert the integrated bottle (Tsukasa) into the body holder (2) in f761, and attach the holder (731 and grindstone pressure lever (7) together with t and b.
5! A return spring σ & is interposed between the
) is positioned above the holding hole (61).

The above is an example of an apparatus applied to superfinishing a ball groove formed on the inner periphery of a bearing outer ring.Next, the operation of this apparatus will be explained.

First, when the detector detects wear and tear on the grinding wheel head,
The fixed position mechanism (]lc) rotates the swing axis (
0 oscillation to accurately position and fix 6η in a predetermined position @I]
After the positioning and fixing of (67) is completed, the substrate moving row reactor (531 outputs l1IilI, the pinion I: J21 and the rack As a result, the Goishi Makajin (A) and the grindstone pushing mechanism (E) attached to the p-substrate: steel move toward the center of the workpiece (W).Then, the grindstone magazine (A) and the grindstone pushing mechanism (E) is the grindstone holding part (0
), the cam plate (79) formed integrally with the front wall plate (44a) of the grindstone magazine (A) moves the grindstone pressure lever q9 against the return spring (781). The grindstone magazine (A) and the grindstone push-in root 1 (B) are pushed in a direction perpendicular to the moving direction, and the grindstone passage hole provided in the grindstone magazine (A) is inserted into the holding hole [F] of the grindstone holding part (0). 11. In this state, the cylinder for pushing the whetstone (with six piston ronds protruding), and the bar-shaped whetstone (located at the frontmost end of the whetstone magazine (A) on the surface), which is integrally attached to the piston rond. 43) is cut downward, and this bar-shaped grindstone t43) is gradually fitted and pushed into the holding hole (6j) of the grinding wheel holding part (0), and when the force reaches the lowest end, it is first inserted into the holding hole (61). ) is held in the wear grinding wheel (
431 is deviated downward at its tip, and the rod-shaped grindstone (431 is penetrated and held in a predetermined position in the butsha (when 5η reaches the lowest position, the holding hole of the grindstone holding part (0)). When the pushing of the whetstone (43) is completed, the piston rond of the whetstone pushing cylinder □□□ is withdrawn and the butcher 6η is returned to its original position in preparation for the next operation.
The bar-shaped grindstone (G) in the grindstone magazine (A) moves forward as a whole by a holding spring (4η) via the pusher (46).
Rotate in the opposite direction to the previous one and pass the output shaft i''A through the pinion beak and rank υ to the board. (A
) and the grindstone pushing mechanism (B) back to their original positions. The cam plate q9, which is integrally formed on the front wall plate (44a) of the grinding wheel magazine (A), has been pushed backwards by the force of the grinding wheel pressure mechanism (D>), and the grinding wheel pressure lever (towards) is activated by the return spring decoy. is pushed back in the direction 61j by the elastic force of When the tip of the pressure lever ff51 returns to the position directly above the holding hole D of the grindstone holder (0), at the same time the piston rond of the positioning cylinder ha protrudes and the positioning arm 140) moves clockwise in FIG. The presser roller (roller) attached to the tip of the positioning arm ''-muke 0) moves into the recess (37
), the swing shaft (goods) can no longer swing, and the normal cycle returns. In this state, when superfinishing is to be performed, the tool (w) is loaded into a predetermined position, that is, the work center. When the workpiece (w) is loaded, the short index cylinder (701 (
7i Retract the piston rond, fix the main body side of the cylinder surface for the short index, and attach the 7'C storage plate ("71
) is lowered by a predetermined stroke, and the main part of the grindstone holder (0) and the grindstone pressurizing mechanism (D) is lowered to the mounting plate C11i, and the bar-shaped grindstone held by the grindstone holder (0) is lowered by a predetermined stroke. (
43) is inserted into the groove of the workpiece (w).

Next, air is supplied to the IJ + stone eye pressure cylinder q4 to make the tech stone rond protrude, and the whetstone pressure lever (75) attached to the piston rond is lowered to lower the tip of the Uζ grindstone pressure lever 05]. The bar-shaped grindstone θ3) is pressed against the lower surface to press the end face of the bar-shaped grindstone (43) to the soak (w).

With this, the grindstone head is swung around the swing shaft (61), and the bar-shaped grindstone (sorter (w) is used for super finishing. When the bar-shaped grindstone (431) is worn out, the grindstone pressure cylinder (
The piston of the cylinder (72) passes through the drain hole (732a) provided on the sliding surface of the cylinder (721), and the air in the cylinder (■) escapes and the pressure decreases.The detector detects this and replaces the grindstone. If the electrical detection signal is greater than or equal to 0, the worn grindstones can be automatically replaced one after another by repeating the above operations.

(F) Effects of the Invention In this invention, the swinging head and the grindstone exchange functions such as the grindstone magazine and the grindstone pushing mechanism are completely separated from each other, so the inertial weight of the swinging head can be significantly reduced. As a result, the high-speed insertion 17 is not required at the press of a button, and the improvement in machining efficiency and precision is often a problem for super finishing. Also,
The automatic grindstone exchange device can be attached to a conventional grindstone head as a unit, making it versatile, and can maintain a constant pressure on the grindstone regardless of wear or mineralization of the grindstone.Furthermore, it can eject the old grindstone with a new one. Therefore, there is no need for a special grindstone discharge mechanism, and moreover, it can be loaded and discharged at the same time.

[Brief explanation of the drawing]

Figures 1 and 2 show an embodiment of a device in which the present invention is applied to superfinishing a ball groove formed on the outer periphery of a bearing inner ring, and Figure 1 is a front view showing a grindstone magazine and a grindstone pushing mechanism. Fig. 2 is a plan view, Fig. 3 is a side view, Fig. 7 is a cross-sectional front view of the main parts showing the grindstone holder and the grindstone pressure mechanism, Fig. 5 is a plan view, and Fig. The figure is a left side view, FIG. 2 is a sectional view taken along the line ■--■ in FIG. 7, and FIG. 2 is a front view showing the structure in the fixed position. 7 to 12 show an embodiment of an apparatus in which the present invention is applied to superfinishing a ball groove formed on the inner circumference of a bearing outer ring. FIG. 7 shows a grindstone magazine, a grindstone pusher, and a Figure 70 is the same <IIt11 side view, Figure 1/Figure 1 is a cross-sectional view taken along the cutting line - A front view of the section,
Fig. 73 is a side view, Fig. 77 is a plan view, Fig. 1j is a cross-sectional view of the main part of the grindstone holder, and Fig. 12 is a cross-section taken along the line X'VI-n'I of Fig. 1. Figure n〒1. (A)・Whetstone magazine, (B)・e Grindstone push: mechanism, (0)・Grinstone holding part, (D) @・Whetstone pressure mechanism, (
E)... Fixed position board lecture, (F)... Swing mechanism, +11 glance.
・Bar-shaped whetstone, (2i +44)Φ reference frame, +3) (4 forces・
Spring for maintaining the alignment of the whetstone, (4) Decoy/Φ pusher, j51j
(141 −＊
Tsuiya, (+5) (56) Fist - Schilling for pushing in the grindstone, (+7)・-Tension spring, (+8) +59)・
・Whetstone holding part body, (b) If611-・Holding hole, (2
3) (Foundation)... Holding member, (z5! (Gsr 11 @
Holding spring, ('') +071 m, Swing axis, (27) (
118) @・Swinging arm, (29+ff0),”・
Cylinder for short indentus, (,';0) I group 1
111 mounting plate, (31) (2) ψ-1 low stone pressure 1 king cylinder, (35) 751・O grinding wheel pressure lever, +36) f
781...Return spring, can...Fixed position cam plate, (fusan〇 position pumping arm, (Shu Q/grinding wheel passage hole, (5υ/Hibiki rank, f521 @/pinion, (to) Φ/board moving motor Figure 6 Figure 7

Claims (1)

[Claims] (1) A grindstone magazine in which bar-shaped grindstones with one end surface pre-formed to a predetermined curvature are housed in a line, and a grindstone pushing mechanism that cuts seven bar-shaped grindstones downwards in the grindstone magazine at a time. A grindstone holder that penetrates and holds the bar-shaped grindstone cut out from the grindstone magazine by this grindstone pushing mechanism into a holding hole, and a bar-shaped grindstone held by the above-mentioned grindstone holder sK by an elastically slidable grindstone pressure lever. The grinding wheel magazine and the grinding wheel pushing mechanism are separated from the swinging head and fixed toward the work center. An automatic grindstone exchange device that is exempted from being installed on a board that reciprocates with a stroke.