JPH04113121U - Tool holder positioning confirmation device - Google Patents

Abstract

(57) [Summary] (with amendments) [Purpose] A compact and simple device for confirming the operation of a locking member for positioning and locking a removable tool holder on a tool holder support member. The objective is to prevent damage to tools and reduce failures. [Structure] Tool holder mounting areas are provided at a suitable number of locations on the upper tool holder support member 5, and an engaging member 95 and a locking member 93 are used to store and position the removable upper tool holder 89 in the tool holder mounting area. A tool holder positioning confirmation device 165 is provided on the upper tool holder 89 and the upper tool holder support member 5, respectively, and the locking member 9
5, a touch sensor 137 that can be freely touched and separated, and a proximity switch 159 that is activated when the touch sensor 137 is touched or separated.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea is based on the tool holder support in machine tools such as punch presses. The tool holder is used when attaching a tool holder to the tool holder attachment area provided on the material. The present invention relates to a positioning confirmation device.

0002

[Conventional technology]

Conventionally, for example, tool holders were automatically replaced on the turret in a turret punch press. Regarding the tool holder positioning confirmation device that positions the tool holder using the device. There are various types known.

0003 First, the tool holder support member rotates, for example, like a turret. When trying to use a commercially available limit switch, due to space issues, the tool holder It only confirms that the tool is installed in the tool holder attachment area on the turret. Devices that have been used for this purpose are known.

0004 Second, a locking member (ejector pin) is used as a tool holder positioning confirmation device. ) is engaged with the engaging member (engaging hole member), A device is known in which a small limit switch is incorporated into a support member.

[0005]

[Problem that the idea aims to solve]

First device as a tool holder device determination confirmation device known in the prior art Now, the tool holder is attached to the tool holder attachment area on the turret. Even if it is confirmed that the locking member for positioning is fully engaged with the engaging member Not necessarily.

[0006] Therefore, if the locking member is not completely engaged with the engaging member, the next operation When machining is performed, the tool holder may shift, resulting in misalignment of the workpiece, galling, or damage to the workpiece. accidents resulting in tool damage.

[0007] Next, in the second device, the tool holder provided on the turret (tool holder support member) To activate the limit switch when the tool holder is installed in the tool holder area. It becomes necessary to run cables or install a large-scale power supply, and This increases the pace and results in an increase in costs.

[0008] In view of the above problems, the purpose of this invention is to determine the storage position of the tool holder. The locking member is engaged with the engaging member as a signal, and the workpiece is In addition to preventing misalignment, galling, and damage to workpieces or tools, it can also be used in small spaces. An object of the present invention is to provide an inexpensive tool holder positioning confirmation device.

[0009]

[Means to solve the problem]

In order to achieve the above purpose, this device is designed to A tool holder mounting area is provided, and a removable tool holder is installed in this tool holder mounting area. The tool holder is provided with an engaging member for storing and positioning the tool holder. The tool holder includes a locking member that is engaged with the mating member and is provided on the tool holder support member. The locking member is provided with a touch sensor that can be freely contacted and separated from the locking member. The touch sensor is provided on the tool holder member and is activated when the touch sensor is touched or separated from the touch sensor. A proximity switch is installed on the frame to configure a tool holder positioning confirmation device. .

0010

[Effect]

By adopting this devised tool holder positioning confirmation device, it is possible to Attach the desired position to one of the appropriate number of tool holder attachment areas provided on the holder support member. When the tool holder is inserted and positioned, the engagement member provided on the tool holder A locking member provided on the tool holder support member is engaged with the tool holder support member.

[0011] Then, the touch sensor, which can be freely contacted and separated from the locking member, is brought into contact with or separated from the locking member. As the proximity switch is activated, the tool holder is placed in the tool holder mounting area. The fact that the vehicle has been positioned at one of the locations is reliably taken out as a signal and confirmed.

0012

【Example】

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

[0013] For example, the structure of a turret punch press as a machine tool is already known. , will be briefly explained. Referring to FIG. 7, the turret punch press 1 has a portal type frame. The gate-shaped frame 3 has a rotatable upper turret in the center. (upper tool holder support member) 5 and lower turret (lower tool holder support member) 7. A turret (tool holder support member) 9 consisting of is supported on the portal frame 3. Ru. There are multiple punches and dies on the circumference of the upper turret 5 and lower turret 7. The molds are mounted facing each other.

[0014] A machining position 11 is provided on the left side of the turret 9, and this machining position 11 The mold selected from the molds is indexed, and the upper part of the gate-shaped frame 3 is indexed. A striker installed above the processing position is driven by a drive device installed in the frame. By vertical movement, the punch and die cooperate to move the workpiece W positioned at the processing position. Punching will be performed at the desired position.

[0015] A fixed center table 13 is provided at the lower part of the gate-shaped frame 3. The center table 13 is provided on both sides in the Y-axis direction (in the left-right direction in FIG. 7). ) is provided with a movable table 15 that is movable. This movable table 15 is When moving in the axial direction, the slide is guided by a plurality of guides 17 extending in the Y-axis direction. Moved to Moose.

[0016] A carriage base 19 is mounted on the left end of the movable table 15 in the X-axis direction (see FIG. 7). The carriage base 19 is provided so as to extend in the front-rear direction). A track moving positioning device 21 is provided. That is, the carriage base 19 is provided with a carriage 23 that is movable in the X-axis direction, and this carriage 2 A plurality of work clamps 25 for gripping the work W are attached to the workpiece 3.

[0017] With the above configuration, the movable table 15 is moved in the Y-axis direction, and the carriage By moving the screw 23 in the X-axis direction, the work gripped by the work clamp 25 is The workpiece W is moved in the X-axis and Y-axis directions, and the desired position to be machined is positioned at the machining position. It will then be punched.

[0018] A workpiece moving and positioning device 21 is provided on the left side with the turret 9 in the center. In the gate-shaped frame 3 on the right side, which is the opposite side of the workpiece moving device 21, there is a metal plate. A mold holding area 27 is provided.

[0019] This mold holding area 27 has a mold set (tool holder) consisting of an appropriate number of punches and dies. (29) are arranged at appropriate intervals in the Y-axis direction, and are also vertically opposed to each other. A mold set storage section 31 is provided. Moreover, this mold set The mold set 29 placed in the storage section 31 is oriented in the Z-axis direction (vertical direction in FIG. 7). It is configured so that it can be moved to.

[0020] A mold set is installed on the circumference of the turret 9 consisting of the upper turret 5 and the lower turret 7. For example, the mold set mounting area is cut into an approximately U-shape in order to mount the mold set 29. (Tool holder mounting area) 33 are provided in an appropriate number (two in this example) at appropriate intervals. It is. Moreover, in FIG. 7, one position of this mold set mounting area 33 is The position is the mold exchange position 35.

[0021] This mold exchange position 35 and the front side of the mold set storage section 31 in the X-axis and Y-axis directions. A movable automatic mold exchange device 37 is provided, and this automatic mold exchange device 37 is a mold mounting part that is at least the same as the appropriate number of mold set mounting areas 33. Housings 39 (three in this embodiment) are provided.

[0022] More specifically, with reference to FIGS. 7, 6, 1, and 2, the turret punch press The lower frame 41 of No. 1 has a Y-axis direction, which is a direction perpendicular to the plane of the paper in FIG. A plurality of guide rails 43 extending in the direction are provided in parallel. Each housing 39 is integrally provided in the housing 43 via a plurality of guide members 45. ing.

[0023] A ball screw 49 rotates on a bearing 47 provided on both sides of the lower frame 41. The ball screw 49 is freely supported, and a nut member 51 is screwed onto the ball screw 49. Ru. This nut member 51 is attached to the lower part of the housing 39.

[0024] With the above configuration, when the drive motor (not shown) is driven, the ball screw 49 rotates. The housing 39 is not moved in the Y-axis direction via the nut member 51. It becomes. Note that when the housing 39 is moved in the Y-axis direction, the guide rail 43 You will be guided through the area, so you will be able to move smoothly.

[0025] A plurality of guide rails 53 are provided at appropriate intervals on the bottom plate 39U of the housing 39. is provided extending in the X-axis direction. Each guide rail 53 has a plurality of guides. An X-axis carriage 57 is provided with a door member 55 in between.

[0026] The front wall (right side wall in FIG. 6) 39F of the housing 39 has an X-axis seat. A cylinder 59 is attached, and a piston attached to this X-axis cylinder 59 The tip of the rod 61 is attached to the upper right side wall of the X-axis carriage 57. .

[0027] With the above configuration, when the X-axis cylinder 59 is operated, the piston rod 61 is The X-axis carriage 57 is moved in the X-axis direction through the X-axis carriage 57. In addition, the X-axis cap When the ledge 57 is moved in the X-axis direction, it is guided by the guide rail 53 and smoothly will be moved to.

[0028] Each housing 39 is equipped with a lock release device 63, and an X-axis key The carriage 57 is equipped with a mold holding section 65 that holds a mold set. sand That is, as shown in FIG. 6, the lock release device 63 includes The lock is released via guide members 67 that are horizontally slidably supported on both the upper and lower sides of the gear 39. Members 69P and 69D are provided extending in the X-axis direction, and this unlocking member 6 9P and 69D are connected by a connecting member 71 at the right end in FIG. Ru.

[0029] A lock release cylinder 73 is provided on the front wall 39F of each housing 39. A piston rod 75 is attached to this unlocking cylinder 73. ing. The tip of this piston rod 75 is attached to the connecting member 71. .

[0030] With the above configuration, when the lock release cylinder 73 is operated, the piston rod 7 The unlocking members 69P and 69D connected to the connecting member 71 through 5 are moved in the X-axis direction. It will be moved. Note that the lock release members 69P and 69D are moved in the X-axis direction. During the installation, each guide member 67 is guided along each housing 39.

[0031] As shown in FIG. 6, the mold holding part 65 is At the top and bottom of the left side of the die 57 in FIG. 6, there are holding bars 77 that hold the mold set. A chuck device 79P, 79D is provided at the tip of each holding bar 77. is installed.

[0032] Each of the holding bars 77 protrudes to the right within each X-axis carriage 57 in FIG. It is integrated into a connecting bar 81, and each connecting bar 81 is connected by a connecting member 83. There is. A holding cylinder 85 is provided in each of the X-axis carriages 57, A piston rod 87 is located at the tip of this holding cylinder 85 (the right end in FIG. 6). In addition, the tip of the piston rod 87 is attached to the connecting member 83. It is being

[0033] With the above configuration, when the holding cylinder 85 is operated, the piston rod 87, The chuck devices 79P and 79D are moved in the X-axis direction via the connecting member 83 and the connecting bar 81. It will be moved.

[0034] A plurality of mold mounting areas provided in the upper turret 5 and lower turret 7 of the turret 9 Area 33 is equipped with a replaceable mold set. More details are shown in Figures 1 and 6. As shown, a U-shaped notch groove is used as the mold mounting area 33 of the upper turret 5. 5V is formed, and an appropriate number (three in Fig. 1, Fig. 6 In this case, the U-shaped upper mold base (upper tool holder) is equipped with two punches P. 89 is installed horizontally from the right side in Figures 1 and 6, or removed. It is now possible to do so. Note that an appropriate number of punches P are attached to the mold base 89. Since the structure is already known, detailed explanation will be omitted.

[0035] At the upper part of the right side in FIG. 1 of the upper mold base 89 (both left and right sides in FIG. 2) For example, an engagement member 93 having an engagement portion 91, which is a conical engagement hole, is attached. There is. Further, a locking member 95 made of, for example, a locking pin that locks on this engaging portion 91 is provided. It is provided to slide vertically within the upper turret 5. This locking part A notch 5C is formed in the upper turret 5 at the lower part of the material 95. An L-shaped support block 97 is attached to the notch 5C with a plurality of bolts. There is.

[0036] This support block 97 has a hole that passes through it in the vertical direction. is provided through the lower member 99 of the locking member 95, and the lower member 99 is provided below. A support block 103 that rotatably supports the cam follower 101 is bolted to the end. It is integrated by There is a strip between the locking member 95 and the support block 97. A spring 105 is interposed, and the spring 105 always holds the locking member 95 upward. It is biased in the direction.

[0037] It is attached to the notch groove 5V from the front (right side in FIG. 1) and is attached to the stopper 107. The upper mold base 89 protrudes upward and comes out on the upper surface of the upper mold base 89 that is in contact with the upper mold base 89. A fixing member 109 is provided to prevent this from happening. This fixing member 109 is When viewed from the side, it has a U-shape, and the pins 111 are inserted into the appropriate positions of the two bars 109a. The pin 111 is supported by a bearing 113 fixed to the upper surface of the upper turret 5. .

[0038] With the above configuration, the fixing member is rotated around the pin 111 provided on the bearing 113. 109 swings. The lower tip of the lever 109a is in contact with the upper mold base 89. A contact surface 115 having an arc shape is formed, and the base 109b of the fixing member 109 is , is attached to a bolt 117 set up on the upper turret 5, and is wound around this bolt 117. It is constantly urged upward by a bullet 119 such as a coil spring.

[0039] On the other hand, above the base 109b of the fixing member 109, a A driving member 123 is provided which is fixed to the bracket 121. This drive The member 123 is, for example, a cylinder operated by fluid pressure, and the piston rod 125 It is equipped with

[0040] With the above configuration, the cylinder which is the driving member 123 is actuated and the piston rod 1 25, the piston rod 125 is attached to the base 109b of the fixing member 109. is pressed against the force of the bullet 119. The bar 109a of the fixing member 109 is The bar 109a rotates around the shaft 111, and the contact surface 115 of the bar 109a is attached to the upper mold base. away from the top surface of 89. In this state, remove the upper mold base 89 from the upper turret 5. or can be inserted.

[0041] The cylinder, which is the driving member 123, is operated to contract the piston rod 125. Then, the fixing member 109 is rotated by the elastic force of the ammunition 119, and the tip of the bar 109a is rotated. The contact surface 115 provided on the upper mold base 89 presses against the stopper 93a which is flush with the upper surface of the upper mold base 89. and fix it.

[0042] An appropriate number of U-shaped notch grooves 7V are formed as the mold mounting area 33 of the lower turret 7. U-shaped lower mold base (lower tool holder) with dies D (two in Fig. 6) attached. 127 is installed or removed horizontally from the right side in Figure 6. It is now possible to do so. Note that an appropriate number of dies D are attached to the lower mold base 127. Since the structure is already known, detailed explanation will be omitted.

[0043] The lower mold base 127 also has a conical engagement hole similar to the upper mold base 89. An example of an example in which an engaging member having an engaging part is attached and which is engaged with this engaging part is attached. A locking member consisting of a locking pin is provided on the lower turret 7 so as to be slidable up and down. It is.

[0044] The above-mentioned locking member is always urged upward by a spring, and the cam The lock is released by the approach of the follower and the lock release member 69D. However, since the structure and operation are similar, the explanation will be omitted.

[0045] However, the mechanism that prevents the lower mold base 127 from protruding upward and coming off is a swinging mechanism. Rather than using the arm-shaped fixing member 109, it is simply attached to the top surface of the lower turret 7. A plate-shaped holding member fixed with a plurality of bolts is arranged in the direction in which the lower mold base 127 enters. It is only provided on both sides of the The reason for this is that the lower gold holding the die Since the direction of force during work on the mold base 127 is downward, it rarely pops out upwards. This is because it is unthinkable.

[0046] Next, the detailed structure around the engaging member 93 and the locking member 95 will be explained in FIGS. 1 and 2. This is explained by: In FIG. 1, the locking member 93 is made of two pieces for manufacturing reasons. . That is, the stopper 93a that comes into contact with the contact surface 115 at the tip of the fixing member 109 is An engagement tube that is assembled from above the flange portion 89f of the mold base 89 and includes an engagement portion 91 93b is assembled from below the flange portion 89f.

[0047] Further, the pin-shaped locking member 95 is integral, but is centered around the central flange portion 95f. The structure consists of the locking pin part 95a at the upper part and the lower member (spring guide) 99 at the lower part. has been completed. The locking pin portion 95a is provided in the upper turret 5 in the vertical direction. The bushing 135 is inserted into the through hole 131 from below and is slidably supported up and down. ing.

[0048] At the locking position of the locking member 95, that is, in the raised position, the flange portion 95f has a tag. The tip of the switch sensor 137 is in contact. This touch sensor 137 is connected to the upper turret. It is supported slidably in the horizontal direction within an insulating collar 139 provided horizontally on the plate 5. At the same time, the flange portion 137f is always held by the spring 141 of the locking member 95. is biased in the direction. The other end of the spring 141 is connected to the turret 5. It is held down by an insulating plate 145 fixed to the side surface with bolts 143.

[0049] Note that the terminal 147 is connected to the rear end of the touch sensor 137 as shown in FIG. Since it is fixed and cable 149 is connected, this cable 149 and the upper turret 5 are grounded, the touch sensor 137 is electrically connected between them. It acts as an ultra-small switch inside.

[0050] Also, the upper mold base 89 enters the U-shaped hole 5V provided in the upper turret 5. 1 and 2 in order to obtain a signal indicating that the stopper 107 has come into contact with the stopper 107. As shown in the figure, a pin 151 is provided upright on the upper mold base 89. A proximity sensor 153 is attached to a bracket 155 hanging from the portal frame 3. is attached.

[0051] Next, the signal system beyond the touch sensor 137 will be explained. First, let's look at Figure 3. According to the report, following the touch sensor 137, which acts as an ultra-small ON/OFF switch, , transmission coupler 157 are connected. And close to this transmission coupler 157 , a proximity switch 159 is provided.

[0052] In principle, as shown in FIG. 4, the transmission coupler 157 has an electromagnetic coil 161 inside. Since one of the coil terminals is connected to the touch sensor 137, there is a small power supply 16 connected to the touch sensor 137. 3 to the cable, and the other coil terminal is connected to the upper frame 5 etc. If the earth connection is established, the locking member 95 will rise and the flange portion 95f will be connected to the touch sensor. When the electromagnetic coil 161 comes into contact with the sensor 137, a current flows through the electromagnetic coil 161 and the electromagnetic coil 161 is magnetized. Therefore, Since the proximity switch 159 provided close to the transmission coupler 157 is activated, it is not engaged. The locking member 95 is engaged with the engaging member 93, that is, the upper mold base 89 is positioned. It is sensed that the device has been locked.

[0053] Among the above parts, the locking member 95 and the cable 149 from the touch sensor 137 and Sole holder positioning confirmation device with parts from transmission coupler 157 to small power supply 163 165 is configured.

[0054] By the way, FIG. 5 shows the parts constituting the tool holder positioning confirmation device 165. This shows an example of the arrangement. That is, the mold set installed on the upper turret 5 At the lower position of the engaging member 93 in the upper mold base 89 positioned in the area 33, an engaging member is placed. A stop member 95 is provided within the upper turret 5.

[0055] A touch provided horizontally within the upper turret 5 in contact with the flange portion 95f A cable 149 connected to the sensor 137 is connected to the upper turret via a small power supply 163. 5 is fixed slightly near the center of the top surface and connected to the grounded transmission coupler 157. .

[0056] A proximity switch 159 is connected to the transmission coupler 157 from the gate frame 3. The cable is fixed to the hanging bracket and exits from the proximity switch 159. is connected to the NC device.

[0057] As mentioned above, the proximity switch 1 as tool holder positioning confirmation device 165 The parts other than 59 are provided on the upper turret 5, but all of them are small and have a simple structure. It's simple. In other words, the touch sensor 137 is designed to prevent commercially available limit switches from turning on. It can be installed in small spaces. Also, the electromagnetic coil 161 in the transmission coupler 157 is also nearby. Since the purpose is only to operate the contact switch 159, it is small enough, so I decided to operate it. A small capacity power source 163, such as a small battery, is sufficient.

[0058] Therefore, it can be easily installed on a rotating tool holder support member such as the upper turret 5. In addition to being easy to install, the structure is simple and there are fewer breakdowns.

[0059] Next, the overall operation will be explained after explaining the configuration of each part. I will stop at a rough explanation of work procedures.

[0060] First, move the housing 39 of the mold changing device 37 to the right in the Y-axis direction in FIG. The mold set storage section 31 is moved to a required position in the mold set storage section 31. Then, the X-axis Operate the cylinder 59 and move the X-axis carriage 57 toward the mold set storage section 31 Then, the holding cylinder 85 is operated to move the chuck devices 79P and 79D to The upper mold base moves backward in the axial direction in Fig. 7 and is equipped with punch P and die D. 89, attached to the holding holes 167, 169 formed in the lower mold base 127 In this embodiment, two mold sets 29 are held. It is then returned to its original position.

[0061] Next, move the housing 39 to the left in the Y-axis direction in FIG. The empty housing 39 with no cut 29 installed is stopped at the mold exchange position 35. Ru. Operate the X-axis cylinder 59 to move the X-axis carriage 57 to the left in FIG. Move it and stop it when it comes near the turret 9.

[0062] On the other hand, the fixing member 109 provided on the upper turret 5 is operated by the driving member 123. The bullet resists the elastic force of the bullet 119 built into the base 109b of the fixing member 109. - 109a to align the contact surface 115 of the bar 109a with the top surface of the upper mold base 89. Keep them away from each other.

[0063] Next, when the lock release cylinder 73 is operated, the lock release member 69P is supported. Riding on the cam follower 101 supported via the block 103 As a result, the locking member 95 descends and disengages from the engaging portion 91 of the engaging member 93, and the upper mold The base 89 becomes free with respect to the upper turret 5. In addition, the lower mold base 1 The operation of the locking member in 27 is also the same as described above, so a description thereof will be omitted.

[0064] After that, the holding cylinder 85 is operated to set the upper and lower mold bases 89, 127. The chuck device 79P, 79D is inserted to hold the upper and lower mold bases 89, 127. Locked in this state By moving the release members 69P and 69D to the right in FIG. 6 and returning them to their original positions. Therefore, the upper and lower mold bases 89, 127 of the mold set 29 are in the mold set mounting area 3. It is removed from 3. Note that the lock release members 69P and 69D return to their original positions. Therefore, the locking member 95 is lifted upward by the urging force of the spring 105. becomes. Note that the movement of the locking member within the lower mold base 127 is also the same as described above.

[0065] Next, move the housing 39 slightly in the Y-axis direction to hold the mold set 29. position the housing 39 at the mold exchange position 35, and move the X-axis carriage 57 6 in the X-axis direction, and then actuate the lock release cylinder 73. , the locking member 95 and the lower locking member are lowered, and the mold set 29 is moved to the mold set. It is inserted into the mounting area 33.

[0066] With the mold set 29 inserted into the mold set mounting area 33, the holding cylinder 85 and pull out the chuck devices 79P and 79D from the holding holes 167 and 169. At the same time, the lock release cylinder 73 is operated to release the lock release members 69P and 69D. When the locking member 95 is moved to the right at 6, the locking member 95 is locked by the biasing force of the spring 105. The mold set 29 is engaged with the engaging portion 91 of the mating member 93, and the mold set 29 is attached to the mold set mounting area 3. It will be set to 3. The operation of the lower locking member and the engaging member is also the same as described above. It is.

[0067] After that, the cylinder that is the driving member 123 is operated to contract the piston 125. Then, the fixed member 109 is rotated by the elastic force of the ammunition 119, and the tip of the bar 109a is rotated. The upper mold base 89 is pressed and fixed by the contact surface 115 provided in the upper mold base 89 .

[0068] As described above, rotate the upper turret 5 and lower turret 7 to create another mold set. After indexing the mounting area 33 to the mold exchange position 35, the automatic mold exchange device 37 is activated. Then, remove the mold set 29 set in the mold set mounting area 33, and Place the other mold set 29 attached to the housing 39 in the mold set attachment area 33. Wear it.

[0069] In this way, the mold set 29 is transferred to the upper and lower turrets 5 and 7 by the mold changing device 37. The upper and lower mold bases 89 and 1 of the upper and lower turrets 5 and 7 are removable and replaceable, respectively. 27, the locking member 97 biased by the spring 105 engages the mating member 97. It is fitted into a conical engagement portion 91 provided on a mating member 93. For this reason, positioning precision It is possible to improve the degree of The operating relationship between the lower locking member and the lower engaging member is also the same. It's like that.

[0070] Further, the upper mold base 89 attached to the upper turret 5 is fixed with a fixing member 109. It can be fixed securely, and the upper mold base 89 is pressed and fixed with the fixing member 109. The drive member 123, which is a drive source, is not provided on the upper turret 5 but on the gate-shaped frame 3 It is provided. Therefore, it is maintenance-free and can be mounted on the turret as before. Compared to models equipped with fluid pressure operated cylinders, the structure is simpler and the drive is easier. Even if an unexpected situation occurs with the moving member 123, the mold base 9 may suddenly loosen. can prevent accidents.

[0071] Furthermore, in order to detach the locking member 95 from the other engaging member 93, the mold changing device 3 is used. By moving forward the lock release members 69P and 69D provided in 7, the upper and lower cam followers are released. By pressing down on 101. Therefore, the operation becomes reliable.

[0072] Furthermore, as mentioned above, the tool holder positioning confirmation device 165 has a simple structure and is small. Since the parts other than the proximity switch 159 are inside the upper turret 5 or on the top surface, Now it can be installed. Therefore, the locking member 95 and the engaging member 93 can be disengaged from each other. Now I can get the signal reliably. Therefore, the upper and lower mold bases are at 89,127 positions. Punching is performed with incomplete positioning and locking, resulting in workpiece or tool steering being interrupted. Risks of damage or breakage can be avoided.

[0073] Note that this invention is not limited to the embodiments described above, and may be modified as appropriate. Accordingly, other embodiments may also be implemented. For example, transmission coupler 157 is embedded in the side of the upper turret and the proximity switch 159 is fixed to the lower frame 41. It can also be supported by a fixed bracket.

[0074]

[Effect of the idea]

As can be understood from the explanation of the embodiments above, the touch sensor has a narrow relationship. A transmission coupler that is ultra-compact and can be installed around the stopper, and also faces the proximity switch. Since the operation power supply is also small because the capacity is small, the moving tool holder support member It can also be easily installed.

[0075] Therefore, the signal that the locking member engages and disengages from the engagement member in the tool holder is accurately transmitted. The tool holder may become loose during the next machining process, causing damage to the workpiece or tool. Accidents such as being kicked or damaged can be avoided.

[0076] Furthermore, the tool holder positioning confirmation device inside the tool holder support member is small and simple. As a result, failures can be reduced and costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is an explanatory cross-sectional view of an upper turret in a radial direction including a locking member and an engaging member.

FIG. 2 is an explanatory cross-sectional view taken in a right angle direction of FIG. 1, including a locking member and an engaging member.

FIG. 3 is an electrical circuit connection diagram of the tool holder positioning confirmation device of the present invention.

FIG. 4 is an explanatory diagram of the operating principle in FIG. 3;

FIG. 5 is a three-dimensional explanatory diagram showing an example of the arrangement of parts in FIG. 4;

6 is an enlarged sectional view taken in the direction of arrow VI in FIG. 7. FIG.

FIG. 7 is a perspective view of a turret punch press according to an embodiment of the invention.

[Explanation of symbols]

1 Turret punch press 9 Turret (tool holder support member) 29 Mold set (tool holder set) 33 Mold set mounting area (tool holder mounting area) 69P Upper lock release member 79P upper chuck device 89 Upper mold base (upper tool holder) 93 Engagement member 95 Locking member 101 Cam follower 127 Lower mold base (lower tool holder) 137 Touch sensor 157 Transmission coupler 159 Proximity switch 165 Tool holder positioning confirmation device

Claims (1)

[Scope of utility model registration request] 1. A tool holder mounting area is provided at an appropriate number of locations on a tool holder support member, an engaging member is provided on the tool holder for storing and positioning a removable tool holder in the tool holder mounting area, and the tool holder is provided with an engaging member for storing and positioning a removable tool holder. A tool holder positioning confirmation device comprising: a locking member that is engaged with a mating member; provided on the tool holder support member; a touch sensor capable of contacting and separating from the locking member; A tool holder positioning confirmation device characterized in that the frame is provided with a proximity switch that is activated when it comes into contact with or leaves a touch sensor.