JPH0744408Y2 - Key clamp device for duplicator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a key clamp device in a duplicator.

(Prior Art) Conventionally, as shown in FIG. 16 and FIG.
There is one as shown in the figure (see Japanese Patent Application No. 62-42371).

That is, the cutting tool 112 and the copying tool 113 are arranged at a predetermined distance on the base 111, the saddle 114 reciprocating with respect to the cutting tool 112 and the copying tool 113, and the moving direction on the saddle 114. The slide plate 115 that reciprocates in a direction orthogonal to the slide plate 11 and the cutting tool 112 and the copying tool 113 are opposed to each other.
On the 5 is provided with key vise 116, 117 arranged at the same distance as the separation distance between the cutting tool 112 and the copying tool 113, and each key vise 116, 117 is a pair of holding bodies 118, 119 relatively movable back and forth, and both. And a clamping tool 120 that releasably clamps the holding bodies 118 and 119 by screwing with the slide board 115,
The holding surfaces 121,12 of the two holding bodies 118,119 of each key vise 116,117
A key duplicating machine in which a key to be cut 123 and a master key 124 are releasably fastened and fixed between the two.

(Problems to be Solved by the Invention) In the above conventional key duplicating machine, in addition to the key vices 116 and 117 corresponding to the key clamp device being separate bodies, respectively, the cut key 123 and the master key 1
In order to pinch or release 24, the fastening tool 120 must be rotated each time, and the work is troublesome and takes a very long time.

The present invention has been made in view of such circumstances, and an object of the present invention is to provide both a key to be cut and a master key at a time, though the operation is very simple. The object of the present invention is to provide a key clamp device in a duplicate key duplicating machine that can be securely and firmly clamped.

(Means for Solving the Problem) In order to achieve the object, the present invention has taken the following technical means.

That is, according to the present invention, the cut key 10 and the master key 11 are
The keys 10 and 11 on the support pins 82 arranged vertically at the center in the same direction of the key mounting table 48 mounted on both sides in the longitudinal direction.
From above on both sides in the longitudinal direction-The center part of the presser foot 49 in the same direction is supported so as to be horizontally rotatable and movable up and down, and above the key presser tool 49, in the longitudinal direction of the presser foot 49. By pressing the center part from above and lowering it, the presser foot 49
A tightening arm 87 for pressing both sides in the longitudinal direction of the keys 10 and 11 is provided, and in the unclamped state in which the keys 10 and 11 are not pressed, the longitudinal direction of the key retainer 49 is the key mounting table 48. In the clamped state in which the keys 10 and 11 are intersected with each other in the longitudinal direction and the keys 10 and 11 are pressed, the longitudinal direction of the key pressing device 49 is aligned with the longitudinal direction of the key mounting table 48. A switching means for switching the direction of the tool 49 is provided (Claim 1).

In this case, the switching means uses the support pin so that the key retainer 49 is always urged upward.
A first biasing member 83 fitted over the key holding member 82; a second biasing member 92 for biasing the key pressing member 49 in a state where its longitudinal direction intersects with the longitudinal direction of the key mounting table 48; and the key pressing member. The upper surface of the central portion of the tool 49 is engaged with a tightening arm 87 that descends toward the key pressing tool 49, and the longitudinal direction of the key pressing tool 49 is the longitudinal direction of the key mounting table 48. It is possible to employ a positioning member 70 for rotating the key pressing member 49 against the second biasing member 92 so as to match the direction (claim 2).

Further, as the positioning member 70 in this case, a key holder
An upper opening-shaped fitting recess 72 into which the tightening arm 87 fits when the longitudinal direction of 49 coincides with the longitudinal direction of the key mounting table 48,
It can be configured by forming guide surfaces 75 and 76 which are formed by notching the entrance of the fitting recess 72 in a chamfered shape (claim 3).

(Operation) When the cut key 10 and the master key 11 are set on the key mounting table 48, the key holding tool 49 is in an unclamped state. At this time, since the pressing means 49 intersects the key mounting table 48 by the switching means, the key pressing tool 49 does not get in the way when the keys 10 and 11 are set on the key mounting table 48.

Therefore, when the tightening arm 87 is operated after setting the keys 10 and 11 on the key mounting base 48, the arm 87 presses the central portion of the key holding tool 49 in the longitudinal direction from above and lowers it.

In this way, when the tightening arm 87 descends and the keys 10 and 11 are in the clamped state, the key holder is pressed by the switching means.
Since 49 can be switched so as to be in the same direction as the key mounting table 48, as the tightening arm 87 descends, both sides in the longitudinal direction of the key retainer 49 conform to the keys 10 and 11 and press these keys. 10 and 11 are simultaneously clamped between the key placing table 48 and the key holding tool 49 to be in a clamped state.

After the duplicating work of the duplicate key is completed, the tightening arm 87 is released and the key retainer 49 is unclamped, and the direction is switched again by the switching means so that the retainer 49 intersects the key mounting table 48. At this time, each key 10,11
The key retainer 49 does not get in the way when the key is removed from the key mount 48.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to the drawings.

First, the overall configuration of the duplicate key copying machine according to the present embodiment will be described with reference to FIGS. 1 and 2. In the figure, reference numeral 1 is a base, on both sides of which in the longitudinal direction, a front wall 3 is mounted via bolts 2.
And a rear wall 4 is erected, and between the front and rear walls 3 and 4,
A pair of pivots 5L and 5R are horizontally mounted on the left and right. Cutting means 6L, 6R are provided on the front wall 3 side in the axial direction of both pivots 5L, 5R, and copying means 7L, 7R are provided on the rear wall 4 side respectively, and further penetrated by both pivots 5L, 5R. A slide base 8 is provided which reciprocates between the cutting means 6 and the copying means 7. A key clamp device 9 which is long in the front-rear direction is provided substantially in the center of the slide base 8 in the left-right direction, and a cut key 10 and a master key 11 are detachably held in front of and behind the device 9. Further, 12 is a cutting plate driving motor, and 13 is a sliding motor.

In the following description, the direction of the machine is defined by the front, rear, left, and right displays shown in FIG. 1, and in the present specification, for a pair of left and right provided like the pivot 5, the left side has the suffix L and the left side has the suffix R. By showing the right side, the left side and the right side are displayed separately when necessary.

As shown in FIG. 4, the cutting means 6 includes a rotary cutting plate 14,
It consists of a main bearing 15 and a main shaft 16. The main bearing 15 penetrates the pivot shaft 5 on the lower side thereof, and is fixed to the pivot shaft 5 in a non-sliding and non-slidable manner via hexagon socket bolts 17, 17 communicating from the side to the pivot shaft 5. There is. This main bearing 15
The main shaft 16 supported at the upper part of the shaft is parallel to the pivot shaft 5, and the upper pulley 18 and the cutting plate 14 are provided at the front and rear ends thereof.
Is installed. The cutting plate 14 is attached to the main shaft 16 by screwing the collar 19 and the tightening bolt 20 onto the main shaft 16 so as to sandwich the cutting plate 14 from the front and rear, and thus the cutting plate 14 is attached to the main bearing 15. In contrast, it is adjustable in the front-back direction.

The copying unit 7 includes a mounting arm 22 and a copying tool 23.
The mounting arm 22 is inserted into the pivot 5 at the lower side thereof,
The long groove 24 provided on the pivot 5 engages with the hexagon socket bolt 25, and the cut groove 26 similarly provided on the pivot 5 engages with the small disc 27, so that the pivot 5 rotates and slides. It is fixed to be impossible. Therefore, the mounting arm 22 is adjustable in position in the front-rear direction on the pivot 5. The copying tool 23 is fitted in a recess 28 provided above the mounting arm 22 and is detachably mounted to the mounting arm 22 with bolts 29 and 30. Also in this copying tool 23, the bolt 30 with the small disc 31
The relative position with respect to the mounting arm 22 can be adjusted by changing the protruding amount of the.

Further, as shown in FIG. 5, at the center of the front wall 3 in the left-right direction,
A central wall 34 is erected by means of bolts 33, 33. The central wall 34 is located between the left and right main bearings 15L, 15R and urges the left and right cutting means 6L, 6R and the copying means 7L, 7R toward each other. That is, fourth, fifth,
As shown in FIG. 9, the main bearings 15L and 15R are provided with a through hole 35 communicating in the left-right direction substantially at the center of the side surface.
The diameter of 35 is enlarged on the way to form a spring accommodating hole 36.

37 is a screw shaft, which is fixed to the central wall 34 via nuts 38, 38, and is penetrated through the through holes 35, 35 in a left-right divided manner. The coil spring 39 is accommodated in the spring accommodating hole 36, and the retaining plates 40, 40 and retaining nuts 41, 41 are attached to both ends of the screw shaft 37, whereby each main bearing
15L and 15R are always urged in a direction approaching each other (arrow direction in FIG. 9). Further, as a result, even in the copying means 7 which is also fixed to the pivot 5, the left and right copying tools 23L, 23R are urged toward each other, and thus the left cutting plate 14L is left. Copy tool 2
3L and the right cutting plate 14R are independently and interlockingly connected to the right copying tool 23R on the left and right sides via the pivots 5L and 5R.

The slide base 8 has a substantially rectangular parallelepiped shape and, as shown in FIG. 6, penetrates the left and right pivots 5L and 5R via slide bearings 43 and 43. On the right side surface of this slide base 8,
As shown in the figure, a connecting plate 44 is attached, and the connecting plate 44 is connected via a drive arm 45 to a rotary disc 46 attached to the slide motor 13 side to form a crank mechanism. The slide base 8 is capable of reciprocating between the cutting means 6 and the copying means 7.

A key clamp device 9 is mounted on the slide base 8, and the device 9 is composed of a key mounting base 48, a key retainer 49, a mounting bracket 50 and a tightening clamp 51 as shown in FIG. Has been done.

The key mounting table 48 comprises a base 52 having a rectangular shape in plan view, which is longer than the slide table 8 in the front-rear direction, and holding plates 53, 54, positioning walls 55, 56, and a central protruding wall 57, which are provided upright. That is, the sandwiching plates 53, 54 on the front and rear ends of the base 52 are sandwiched between the pair of small walls 58, 58 formed integrally with the base 52, and the hexagon socket bolts 59 are inserted from the sides thereof. They are attached by being screwed together, and the positioning walls 55, 56 immediately behind the holding plates 53, 54 are attached by screwing bolts (not shown) from below.

Further, the central protruding wall 57 is provided at the center of the base table 52 in the width direction, and extends in the longitudinal direction from the front positioning wall 55 to the rear holding plate 54, and the base 60 via the bolt 60. It is attached to the base 52. Further, the positioning wall 55
On the upper part of the front side of the
Is attached, and the pins 61 are brought into contact with the protrusions 62 of the keys 10 and 11, so that the keys 10 and 11 can be easily positioned and placed. In addition, both holding plates 53,54
The holding surfaces 63, 64 are provided with small irregularities to prevent the keys 10, 11 from shifting in the front-rear direction when the keys 10, 11 are held as described later. 65 is the master key
11 A fall prevention bracket.

Next, the key retainer 49 is for pressing the cut key 10 and the master key 11 from above corresponding to the key mounting table 48, and as shown in FIG. It has a beam shape with a rectangular cross section with a length up to the end. On both sides of the key retainer 49 in the longitudinal direction, the lower side (mounting table 48
Corresponding to the holding plates 53, 54), holding plates 67, 68 are removably provided via hexagon socket bolts 69. Also, at the approximate center of the longitudinal direction, a clamping arm engagement is provided on the upper surface side. A spring accommodating hole 71 is provided in each of the joining portion 70 and the lower surface side. This engaging part 70
As shown in FIGS. 6 and 14, is a metal fitting that has a fitting recess 72 in the center and has a substantially concave shape in front view, and the corners on the upper ends of the small walls 73 and 74 that surround the fitting recess 72 are chamfered. Guide surfaces 75 and 76 are formed by being cut out. Reference numeral 77 is a spring-fastening screw.

As shown in FIG. 6, the mounting bracket 50 is tightened and fixed by bolts 80 at a position on the leg 79 of the mounting bracket 50 at the rear end side of the slide base 8 and near the key mounting base 48. An upper portion of the mounting bracket 50 projects in a cantilever manner to form a pressing tool receiver 81.
Has a substantially concave shape in side view so that the key retainer 49 can be fitted therein, and a supporting column 82 for supporting the retainer 49 is provided upright from the center thereof. That is, the key retainer 49 is housed in the spring accommodating hole 71 provided in the center thereof, and then the support column 82 is placed on the retainer 81 so that the supporting column 82 is inserted into the accommodating hole 71. The tool 49 is supported by the mounting bracket 50 so as to be vertically movable and horizontally rotatable.

The tightening clamp 51 is composed of a pair of base plate parts 85, 85, a tightening lever 86, a tightening arm 87 and a connecting member 88, and these members 85, 86, 87, 88 are four pins 89, 89. , 89, 89 are rotatably connected to each other to form a link mechanism, whereby the tightening lever 87 is rotated in the up-and-down direction with respect to the base plate portion 85, and thus the tightening arm 87 is moved. Similarly, it is adapted to rotate in the vertical direction with respect to the substrate portion 85. Then, the tightening clamp 51 sandwiches the upper end portion of the mounting bracket 50 between the pair of substrate parts 85, 85, and tightens and fixes it with the hexagon socket head bolts 90, 91 so that the mounting bracket 50 is fixed to the mounting bracket 50. Can be detachably attached. Further, one end of a coil spring 92 is hooked on the head of one of the hexagon socket bolts 90, 91, and the other end of the spring 92 is a spring provided on the key retainer 49. It is connected to the fixing screw 77. In addition, on the tip side of the tightening arm 87, an adjusting screw
93 is provided so as to pass through in the up-down direction, and the engagement position in the up-down direction with the above-described tightening arm engagement portion 70 can be adjusted.

Then, the keys 10 and 11 are attached to the key clamp device 9.
In the unclamping state in which the key is not pressed, the longitudinal direction of the key retainer 49 intersects the longitudinal direction of the key placing table 48, and
When the keys 10 and 11 are clamped, the key retainer 49
A switching means for switching the direction of the key retainer 49 is provided so that the longitudinal direction of the key mounting table 48 coincides with the longitudinal direction of the key mounting table 48. The switching means employed in this embodiment is the support column. A spring (first biasing member) 83 fitted over the (support pin) 82, a coil spring (second biasing member) 92 connected to the key pressing tool 49, and an engagement fixed to the upper surface of the key pressing tool 49. The main component is a part (positioning member) 70.

The cutting plate driving motor 12 is tightened and fixed by a bolt to a mounting plate 95 fixed to the right side of the front wall 3 on the base 1, and the main pulley 96 of the motor 12 and a pair of left and right motors. The rotary cutting plates 14L, 14R are rotationally driven via the lower pulleys 97L, 97R and the upper pulleys 18L, 18R.

That is, as shown in FIGS. 3 and 5, the lower pulleys 97L, 97R are attached to the left and right pivots 5L, 5R via the boss collar 98 for stopping the pivot 5 and the slide bearing 99 fitted on the collar 98. The upper pulleys 18L, 18R are rotatably provided and fixed to the main shafts 16L, 16R provided on the cutting means 6 via bolts 100 and are interlocked with the cutting plates 14L, 14R. Two grooves 101, 102 are cut in the lower pulley 97, and between the groove 101 located on the front wall 8 side and the groove 103 of the lower pulley 18, left and right belts 10 are respectively provided.
4, 104 is wound, and the other groove 102 has a drive motor.
V-belt 105 extending from main pulley 96 directly connected to 12
Is wrapped around. As shown in FIG. 3, the V-belt 105 is wound so as to come into contact with the lower pulley 97R on the right side on the outer side thereof and with the lower pulley 97L on the left side on the inner side thereof. Upper pulley 18L, 18R,
As a result, the cutting plates 14L and 14R which are interlocked with it are rotated in the left and right directions in reverse.

Next, the operation of the duplicate key duplicator configured as described above will be described.

FIG. 7 and FIG. 8 show the slide base 8 in the most retracted position and the most advanced position, respectively. When in the final retracted position, the coil spring 39 housed in the main bearings 15L and 15R described above
The left and right copying tools 23L, 23R are urged in such a direction that their tips face each other by the elastic force of, so that the tips of the left and right copying tools 23L, 23R approach each other as shown in FIG. It comes into contact with the side surface of 57. Further, in this state, the distance L ₁ between the cutting plate 14 and the copying tool 23 in the key advancing direction (the direction of the pivot 5) and the positioning walls 55, 5
Separation distance L ₂ between 6 (that is, the key to be cut 10 and the master key 1
(Equal to the distance from the key in the direction of travel of the key) is equal to the distance from the pivot axis 5.
23 The distance D ₁ to the tip and the distance D ₂ from the pivot 5 to the peripheral edge of the cutting plate 14 are adjusted to be equal. And, the key 10 to be cut is on the front side of the key mounting table 48,
The master key 11 is set on the rear side.

From this last retracted position, when the slide base 8 slowly slides along the pivots 5L, 5R by the rotation of the slide motor 13, the key mounting base provided on the slide base 8
48 (key clamp device 9) also moves forward with it. At this time, when the master key 11 reaches the position where the copying tools 23L, 23R are located, the left and right copying tools 23L, 23R resist the elastic force of the coil spring 39 as shown in FIG. Swing left and right along the uneven shapes on both the left and right sides (8th
(Movement in the direction of the arrow in the figure) while following this, and further, the swing of the copying tool 23L, 23R is directly transmitted to the left and right cutting plates 14L, 14R via the pivots 5L, 5R and the main bearings 15L, 15R,
The to-be-cut key 10 is to be cut without changing the uneven shape of the master key 11. Then, the slide motor 13
When the rotating disk 46 provided on the
When the key 10 to be cut has already been cut into the same shape as the master key 11 and the disk 46 has made another half rotation, the copying tool 23L,
The slide table 8 retracts while the 23R and the cutting plates 14L, 14R are rocked to the left and right, and finally the slide table 8 returns to the initial position (the position shown in FIG. 7) to complete the duplication of the duplicate key.

As described above, in the duplicating machine of the present embodiment, the left and right copying tools 23L and 23R and the cutting plates 14L and 14R are left and right independently as the slide table 8 advances, and simultaneously perform copying and cutting work. Therefore, even if the concavo-convex shape of the master key 11 is asymmetric, it is not necessary to cut each side as in the conventional case, and duplication of the duplicate key can be performed in a very short time and easily.

Next, the operation of the key clamp device 9 will be described with reference to FIGS. 10 to 15.

FIG. 10 and FIG. 11 show the state before clamping after setting the keys 10 and 11 on the key mounting table 48, respectively.
Figure 13 shows the condition after clamping. In the state before the clamp, the key holding tool 49 supported by the mounting bracket 50 is pushed up by the spring 83 housed in the substantially central lower surface side thereof and is not fitted into the holding tool receiver 81 of the mounting bracket 50. Further, it is pulled by the coil spring 92 connected between the screw 77 and the hexagon socket head bolt 90, and is in a state of being displaced by about 30 to 40 degrees in the horizontal direction with respect to the key mounting table 48 ( (Fig. 10). From this state, when the lever 86 of the tightening clamp 51 is vertically rotated so as to be substantially vertical, the tightening arm 87 comes down from above and approaches the engaging portion 70 on the key holding tool 49. At this time, since the guide surfaces 75 and 76 are formed on the engaging portion 70 as described above, the tightening arm 87 first comes into contact with the guide surfaces 75 and 76 at the lower end thereof, and accordingly, FIG. As shown in FIG. 5, as the tightening arm 87 moves down, the key pressing tool 49 rotates in the horizontal direction while extending the coil spring 92 so as to be parallel to the longitudinal direction of the key mounting table 48. When the tightening lever 86 is further tightened, the tightening arm 87 fits into the fitting recess 72 of the engaging portion 70 and the key holding work is performed when the key holding tool 49 and the key placing table 48 are just parallel to each other. The tool 49 resists the spring 83
Mating with 81. At this time, the to-be-cut key 10 and the master key 11 placed on the key placing table 48 are firmly sandwiched from above and below by the sandwiching plates 53, 54, 67, 68 at the same time, as shown in FIG. Will be clamped to. Also, after duplicating the duplicate key, return the tightening clamp 51 to its original state,
The engagement between the tightening arm 87 and the engaging portion 70 is released, and the key pressing tool 49
Is pushed up by the spring 83 to release the fitting state with the presser foot retainer 81, and is further rotated in the horizontal direction by the coil spring 92, so that the key presser foot 49 automatically returns to its original state (see FIG. 10 and Return to Fig. 11).

As described above, according to the key clamp device 9 of the present embodiment, the keys 10 and 11 are placed on the key mounting table 48 and the tightening clamp 5 is mounted.
Each key 10,
Since 11 can be instantly clamped both firmly and firmly on both sides, work time can be greatly reduced. Further, the key retainer 49 is, as described above, the key holder.
The horizontal angle of 48 is offset in advance, and it will automatically return to that state after the clamp is released. The tool 49 does not get in the way and is very easy to use.

Although one embodiment of the present invention has been described in detail above, the present invention is not limited to this.

For example, the tightening clamp 51 is not limited to the one having the above-mentioned four-point link mechanism, but may be any one that has the tightening arm 87 that holds the key pressing tool 49 by pressing it from above.

Further, by changing the shape of the key mounting table 48, particularly the shape of the sandwiching plates 53, 54, various types of key clamps are possible without being limited to the width-direction hat-shaped key shown in FIG. Of course.

(Effects of the Invention) According to the present invention, both the key 10 to be cut and the master key 11 can be held between both and surely at the same time only by the turning operation of the tightening clamp 51, so the working time is greatly reduced. You can and it is very profitable.

Also, since the switching means switches the direction of the key retainer 49 from the key mounting base 48 when the keys 10 and 11 are unclamped, the keys 10 and 11 can be set on the key mounting base 48 or can be mounted on the same mounting base 48. The key retainer 49 does not get in the way when it is removed from the key 48, and the work of attaching and detaching the keys 10 and 11 can be made extremely simple.

[Brief description of drawings]

1 to 15 show an embodiment of the present invention. FIG. 1 is a plan view of a duplicator, FIG. 2 is a front view thereof, FIG. 3 is a side view thereof, and FIG. 4 is a cutting means. And perspective assembly view of copying means, fifth
FIG. 6 is an assembled perspective view of the center wall and the upper and lower pulleys, FIG. 6 is an assembled perspective view of the key clamp device, FIGS. 7 and 8 are plan views for explaining the operation of the key duplicating machine, and FIG. 9 is A of FIG. -A sectional view taken along the line A, Fig. 10 and Fig. 11 are plan and side views of the key clamp device before clamping, Fig. 12 and Fig. 13 are the same plan and side views after clamping, and Fig. 14 is a perspective view. Fig. 15 is an enlarged perspective view of the joint, Fig. 15 is an enlarged perspective view of the key clamp,
FIG. 17 and FIG. 17 show a conventional example, FIG. 16 is a schematic side view of a duplicator, and FIG. 17 is a side sectional view of a key vise. 9 ... Key clamp device, 10 ... Key to be cut, 11 ... Master key, 48 ... Key rest, 49 ... Key holder, 70
…… Positioning member (engaging part), 72 …… Mating recess, 75,66
...... Guide surface, 82 …… Support pin (support pillar), 83 …… First urging member (spring), 87 …… Tightening arm, 92 …… Second urging member (coil spring).

Claims (3)

[Scope of utility model registration request] 1. A cut key (10) and a master key (11).
The keys (10) and (11) are pressed from above on both sides in the longitudinal direction on the support pin (82) vertically arranged at the central portion in the same direction of the key placing table (48) on which the keys are placed on both sides in the longitudinal direction. The center portion of the presser foot (49) in the same direction is supported so as to be rotatable in the horizontal direction and movable up and down. Above the key retainer (49), the center part of the presser foot (49) in the longitudinal direction is provided. By pressing down from above and lowering it, both sides in the longitudinal direction of the presser foot (49) are moved to the respective keys (10) (11).
In the unclamped state in which each key (10) (11) is not pressed, the longitudinal direction of the key retainer (49) is the longitudinal direction of the key mounting table (48). In the clamped state in which the keys (10) and (11) are pressed against each other, the longitudinal direction of the key retainer (49) is aligned with the longitudinal direction of the key placing table (48). A key clamp device in a key duplication machine, further comprising switching means for switching the direction of the key retainer (49). 2. The switching means includes a first urging member (83) fitted over the support pin (82) so as to urge the key retainer (49) upward at all times, and the key retainer (49). ) Is the key mounting table (4
8) a second urging member (92) for urging the key pressing member (49) so as to intersect with the longitudinal direction of the key pressing member (49), and
It is engaged with a tightening arm (87) descending toward the key retainer (49), and the longitudinal direction of the key retainer (49) coincides with the longitudinal direction of the key mounting table (48). The key clamp device in the key duplication machine according to claim 1, further comprising a positioning member (70) for rotating the key retainer (49) against the second biasing member (92). 3. A key retainer (49) attached to the positioning member (70).
The upper opening-shaped fitting recess (72) into which the tightening arm (87) fits when the longitudinal direction of the fitting coincides with the longitudinal direction of the key mounting table (48), and the entrance of this fitting recess (72). The key clamp device for a duplicating machine according to claim 2, wherein a guide surface (75) (76) which is cut out in a chamfered shape is formed.