JPH0344401Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feed bar supply device for a lathe, that is, a device for feeding the feed bar into the lathe when in use and retracting it when not in use.

When the bars are inserted one after another from the rear of the lathe and the front bar is pushed out to the chuck part by the rear bar and processed, the last bar is pushed out by the feed bar attached to the lathe. For this purpose, the feed bar needs to have a sufficient length from its feeding part to its chuck part, and normally it needs to be evacuated so that it does not get in the way of bar material feeding. It is common that the feed bar is provided on the rear side of the bar feeder, that is, at the rearmost end of the lathe, and the feed bar is fed to the lathe side using rollers, etc.
Therefore, a large installation space was required.

The present invention aims to solve the above problems and downsize the entire lathe by arranging the feed bar supply device in parallel with the bar supply section and adopting a system in which the feed bar is introduced or withdrawn from above. be.

The details will be explained below based on the drawings.

Figures 1A and 1B show the entire lathe that adopts the present invention.

This lathe is roughly divided into the following five parts A to E, each of which is organically combined to form a series of processes from loading the bar material to processing and carrying it out.

First, A is a bar feeder that has a bar stocker 1 and a feed bar feeder 2 arranged on both sides, B is a bar feeder that feeds the loaded bar or feed bar to the chuck section in front, and C is a bar feeder that feeds the loaded bar or feed bar to the chuck section in front. In the known turret lathe, D is a workpiece carrying-out device for carrying out a processed workpiece, and E is a residual material carrying-out device for carrying out the remaining material after cutting out the workpiece from the bar material.

In addition, 3 is a bar material, 4 is a feed bar, 5 is a feed roller device, 6 is a feed bar clamp device, 7 is a chuck, 8 is a turret, 9 is an unloader, 10 is a work conveyor, 11 is a residual material catcher, and 12 is a residual material. It is uke.

Each of the above devices A to E will be explained in turn.

Details of the bar supply device A are shown in Figure 2 A and B.
The bar supply device A has a bar guide 1 on which the bar 3 is placed.
4 and the cylinder 1 supporting the bar guide 14.
5 and 15, and a lifter adjustment device 17 that regulates and adjusts the lowering position of the lifter 16, and has the bar stocker 1 and the feed bar supply device 2 described above. The lifter 16 is supported by four pillars 18 so as to be able to slide up and down, and the cylinder 15 is fixed to the pillars by a mounting plate 19.
It is driven up and down by a stopper 21, and its lower surface is abutted and locked by a stopper 21 in the lowered state. The bar guide 14 is fixed on the upper surface of the lifter 16 over almost its entire length, and the upper surface serves as a bar mounting surface 14a having a V-shaped recess for stabilizing the bar 3. There is. Bar stock stoppers 22, 22 are embedded in this bar guide 14 at three equal points in the longitudinal direction with their tips protruding. Care has been taken to prevent the bar guide 14 from being overrun by force. The lifter adjustment device 17 consists of a handle 23, a horizontal rod 24, vertical rods 25, 25, and elevating plates 26, 26. By manually turning the handle 23, the horizontal rod 24 rotates, and the vertical rod 25 is rotated via a bevel gear 27. , 25 are rotated, and the vertical rods 25, 25 are rotated, and the vertical rods 25, 25 have threaded portions 25a, 25a formed thereon, through nut portions 26a, 26a screwed thereto, and the elevating plate 2 has been rotated.
6 and 26 move up and down. The above-mentioned stopper 21 is formed at the upper end of the lifting plate 26 and comes into contact with the lower surface of the lifter 16, so that the lifter 1
The lowermost position of the chuck 6 is regulated and adjusted so that the axis of the bar 3 on the bar guide 14 or the feed bar 4, which will be described later, coincides with the center line of the chuck 7.

The bar stocker 1 is constructed by fixing inclined plates 28 to three upright support frames 27 to form inclined surfaces 29, on which the bars 3 are placed. The bar 3 on the left end of Figure 4 is the inclined plate 28
It comes into contact with a guide surface 30 formed on the surface and is stopped.
A cylinder 31 is attached to the inclined plate 28, and its piston rod 32 is connected to a lever 33 which is pivotally supported on the inclined plate 28, while a slide plate 35 is slidably supported on the inclined plate 28 by a guide 34. is connected to the lever 3 by the rod 36.
As the piston rod 32 moves forward, the slide plate 35 moves in the direction of the arrow 37 to push up one bar 3, overcome the guide plate 30, and throw it onto the bar guide 14 mentioned above. .

Details of the feed bar supply device 2 are as shown in FIGS. 2 and 3. Three brackets 39, 40, 41 are fixed to the bar guide 14 on the side opposite to the bar stocker 2, and a shaft 42 of approximately the same length as the bar guide 14 is attached to the bar guide 1.
4 and is rotatably supported. A lifting device, that is, a cylinder 43 is fixedly installed at a position of the lifter 16 near the bracket 40.
One end of a hook-shaped arm 45 fixed to the shaft 42 is connected to the piston rod 44 of No. 3. The arm 45 has a feed bar 4 at one end thereof.
It has a C-shaped hook 46 that supports the piston rod 44, and is connected to the piston rod 44 by a lever 47 extending to the other end via the shaft 42. Further, arms 48, 48 having substantially the same shape as the arm 45 are fixed to both ends of the shaft 42, and the feed bar 4 is supported by these arms 45, 48, 48 in a state parallel to the bar guide 14 at all times. This is the state shown in FIG.
The lifter 16 is raised by the action of the cylinder 15 to the position indicated by the dotted chain line. This is the same as when inserting the bar material 3 described above, but from this, the arm 45,
48, 48 are largely rotated to the position indicated by the dashed-dotted line by the drive of the cylinder 43, and the feed bar 4, which was being supported, is placed on the bar guide 14. Here, the bar guide 14 has its respective arms 45, 48, 4.
Grooves 50, 50, 50 are formed at positions corresponding to 8, 48, and when the arms 45, 48, 48 reach the lowest position, the lower part of the hook 46 fits into the groove, and the feed bar 4 is placed on the mounting surface 1 of the bar guide 14 while remaining in the hook 46.
4a.

The lifter 16 is then lowered to the solid line position and stopped by the stopper 21.

To explain the operation of the bar supply device A, first, several bars 3 to be processed are placed on the inclined surface 29 of the bar stocker 1, and the bar stocker 1 is placed on the inclined surface 29 of the bar stocker 1, and The feed bar 4 is supported within arms 45 and 48, and the height of the bar guide 14 is adjusted by a lifter adjustment device 17. Next, the cylinder 15 is driven and the lifter 16 is raised, and stopped by a stopper (not shown) when the upper edge 30a of the guide plate 30 and the bar mounting surface 14a are substantially flush with each other. In this state, the fourth
As shown in the figure, the cylinder 31 operates and the slide plate 3
5, one bar 3 crosses the guide plate 30 and rotates its upper edge 30a to move to the bar guide 27.
placed on top. And lifter 16 is cylinder 1
5, the bar 3 is gently lowered again and comes into contact with the stopper 21 and stopped, and the bar 3 on the bar guide 14 is fed into the lathe C in front by a feed roller 5, which will be described later. These operations are repeated until there is no longer a bar 3 on the bar stocker 1, but when a sensing device (not shown) confirms that there is no next bar 3 on the inclined surface 29, the lifter 16 When the bar 3 is raised, the cylinder 43 is operated as described above, the arms 45 and 48 are rotated downward as shown in FIG. 3, and the feed bar 4 is thrown onto the bar guide 14 instead of the bar 3. Then, the feed bar 4 is transferred forward in the same manner as the bar 3, comes into contact with the rear end of the bar 3 immediately in front of it, and feeds the bar 3 into the chuck portion 7.
to be pushed and transferred. Also, as will be detailed later,
The feed bar 4 fed into the lathe C stops just before the chuck 7, and then moves to the bar guide 14 again.
The system is such that it is sent back to the top. During this time, the arms 45 and 48 remain rotated downward, and when the returned feed bar 4 is completely inserted into the hook 46, the cylinder 43 is activated by a sensing device (not shown). and arm 45,4
8 returns to rotation, and the feed bar 4 is again lifted and supported at its original position.

Bar feeder B will be explained next. The bar feeder B has a second bar guide 5 on which the bar 3 is placed.
3, a feed roller device 5 that transfers or returns the bar material 3 into the lathe c, a bar guide adjustment device 55 that adjusts the height of the bar material guide 53, and a feed bar 4 that has been transferred so as to be unrotatable. It is composed of a supporting feed bar clamp device 6.

Among the above configurations, first, the second bar guide 53
The bar guide adjustment device 55 will be explained with reference to FIG. 4B and FIGS. Cam chambers 57, 57 are each formed in a recessed manner, and the upper surface has a bar mounting surface 53a having the same shape as the mounting surface 14a of the first bar guide 14.
It is becoming. The bar guide 53 has a cam follower 5 rotatably supported in the cam chamber 57.
8 and 58 are mounted and supported on cams 59 and 59 of a bar guide adjustment device 55, which will be described next.
The bar guide adjustment device 55 has a central gear section 60.
It consists of a shaft 62 rotated by a handle 61 via the gear part 60, and cams 59, 59 at both ends of the shaft 62, and serves to adjust the vertical position of the bar guide 53 on the base 63. . The gear portion 60 is a first bevel gear 6 directly connected to the handle 61.
4 is transmitted to the shaft 62 via the second bevel gears 65, 65, and the bar guide 53
Figure B: Bar guide 5
3 through the support plates 67, 67, 6.
7 and 67 are in a sandwiched state.

Threaded portions 68, 68 are formed at both ends of the shaft 62, and the aforementioned cams 59, 59 are screwed into these threaded portions 68, 68. The cam 59 has a multistage cam surface 59 whose upper surface supports the cam follower 58.
a, and slides left and right as the shaft 62 rotates to adjust and support the bar guide 53 at an appropriate height.

The feed roller device 5 is as shown in FIG. and a bar gripping mechanism. The feeding mechanism will be explained with a focus on the feed roller mechanism 70.
A pair of feed rollers 73, 74 located on both sides of the bar material 3 to pinch the bar 3 have their shafts 75, 76 passing through cylindrical support cylinders 77, 78.
It is rotatably supported on 78. The shaft 75,
76 is operatively connected to pulleys 85, 86, 87, 88 in a box 84 via belts 82, 83 from pulleys 80, 81 fixed at its lower end.

Gears (not shown) are coaxially connected and meshed with these pulleys 85, 86, 87, and 88, respectively, so that the pulleys 85 and 88 at both ends rotate in opposite directions by following each other in rotation.

Note that the feed roller mechanism 71 on the right side has a substantially symmetrical configuration with the feed roller mechanism 70 on the left side described above, so a description thereof will be omitted. The pulley 86 is connected via a belt 89 to a pulley 91 of a motor 90 of the feed roller drive section 72 described above. Therefore, when the pulley 91 is rotated by the drive of the motor 90, the pulley 86 is rotated via the belt 89. , the pulleys 85 and 88 rotate in opposite directions, and the feed rollers 73 and 74 rotate in the direction to feed the bar 3 to the lathe C or vice versa. Here, reference numerals 92, 93, and 94 are free rollers that press against each of the belts 82, 83, and 89 from the inside to prevent belt loosening. Regarding the bar gripping mechanism, the support tubes 77 and 78 of each feed roller 73 and 74 are supported by arms 96 and 96 fixed thereto.
The cylinder 101 and its piston rod 102 are pivoted to levers 98 and 99 fixed to the sides of the support tubes 77 and 78, and the cylinder 101 drives the feed rollers 73 and 7.
4 clamps and grips the bar 3 from both sides. 103,1
Reference numeral 04 denotes a pin device fixed to the upper side of the support tubes 77, 78, in which pins 107, 108 are urged to protrude from boxes 105, 106 by springs. Regarding the effect of this, the cylinder 101 is supported by the swingable support cylinder 7 as described above.
Since the feed rollers 7 and 78 are only supported at both ends by levers 98 and 99, each feed roller 73 and 74 moves simultaneously by the drive of the cylinder 101 to pinch the bar 3, but the movements are not performed equally. Therefore, there is a possibility that the bar 3 is held while being deviated to one side of the bar guide 53. The pin devices 103 and 104 are provided to eliminate such a situation, that is, when the bar 3 is pressed, the pin 10
The pins 107 and 108 come into contact with the bar 3 before the feed rollers 73 and 74, but since the pins 107 and 108 are urged with the same force by the spring, the forces of both interfere with each other. Bar material 3 on bar material guide 53 and each feed roller 73, 7
It acts to make the interval with 4 the same distance.

As a result, each feed roller 73, 74 approaches the bar 3 in an equal manner and grips it directly above the bar guide 53.

The feed bar clamp device 6 is constructed as shown in FIG. 6, and is located directly above the bar guide 53 between the feed roller device 5 and the lathe C. This is a lathe 63 that straddles the bar guide 53.
The frame body 111 is fixed to the frame body 111, and the clamping tool 113 is driven to open and close by a cylinder 112 fixed to the upper surface of the frame body 111. This is to stop the vehicle. Frame 1
A cylinder 112 is fixed to the top surface of a top plate 114, and a piston rod 115 projects downward from a hole 116 in the top plate 114. Further, a horizontal frame 118 having two support shafts 117, 117 is attached to the vertical center of the frame body 111, and vertically elongated openings 120, 120 are formed in the lower side of the side frames 119, 119, respectively. be.

The clamp tool 113 consists of two connecting plates 121 and 12.
1 is also constructed symmetrically from two claw plates 122, 122, and the substantially S-shaped claw plates 122, 122 are pivotally supported by the support shafts 117, 117 through their central holes, and have a shaft at their upper ends. attached connecting plate 121,
The piston rod 115 is pivotally connected to the lower end of the piston rod 115 via a cylinder 112, and the claw plates 122, 122 can be opened and closed widely as shown in the figure by driving the cylinder 112 to freely clamp the feed bar 4 on the bar guide 53. It is.

The function of the bar feeder B is that after adjusting the second bar guide 53 to the same height as the bar guide 14 by the second bar guide adjusting device 55, the bar feeder B adjusts the second bar guide 53 to the same height as the bar guide 14. As described above, the bar stocker 1 feeds the bar stocker 1. At this time, the bar stocker 1 is placed so that one end of the bar stocker 3 is always located inside the feed roller mechanism 70 on the left side described above.
Assume that it is positioned above.

When it is confirmed by a sensing device (not shown) that the first bar 3 has been inserted, the bar 3 is transferred to the cylinder 10.
1 is positioned by the pin devices 103, 104 and held by the feed rollers 73, 74, and at the same time, the motor 9 of the feed roller drive unit 72
0 is driven to feed and rotate the feed rollers 73 and 74, and the bar 3 is fed from the bar guide 14 to the lathe C via the second bar guide 53. Here, the tip of the bar 3 is connected to the feed roller mechanism 71 on the right side.
At the time when it advances upward, the feed roller mechanism 71 performs the same operation as the feed roller mechanism 70 on the left side described above to transport the bar material 3.

Also, just before the rear end of the bar 3 leaves the left feed roller mechanism 70, the cylinder 101 is driven back, and both feed rollers 73 and 74 separate and return to their original positions, and at the same time the next bar 3 The feed roller mechanism 70 on the left side operates again after the material is introduced from the stocker 1, grips it, and transports it. The first bar 3 moves forward a predetermined distance and is stopped by the chuck 7 in front of it, and during that time the next bar 3 moves forward and comes into contact with the rear end of the first bar 3. and stop.

During this time, the feed rollers 73 and 74 continue to idle, and feed the bar 3 forward every time one workpiece is separated from the bar 3 in front. Bar feeder B repeats the above operation and transports the feed bar 4, which is fed in last, in the same manner.
When the feed bar 4 advances to just before the chuck 7, it is detected by the sensing device, clamped by the clamp device 6, and stopped. And the last bar 3
When it is confirmed by a separate sensing device that the processing of It is returned to the position shown in FIG.

As shown in FIG. 1 A and B, the turret lathe C has a turret slide 126 that slides on a base 125 in the vertical direction in FIG. A rotatable turret 8 is fixed to the tip of the turret shaft 127 and has a plurality of tool mounting surfaces 128 on its outer periphery, and a chuck 7 rotates while supporting the bar 3. It is growing. The bar material 3 sent out by the feed roller device 5 is chucked at its tip by the chuck 7, and simultaneously rotated at high speed and sequentially processed by various tools attached to the turret 8. .

Next, the workpiece unloading device D will be explained.

This lathe consists of an unloader 9 that removes and transports a workpiece 131 machined from a bar 3 from a chuck 7, and a workpiece conveyor 10 that receives the workpiece 131 from the unloader 9, rolls it, and transfers it. This is for moving on to the next process.

Details of the unloader 9 are shown in FIGS. 7A and 7B. The unloader 9 is composed of an L-shaped work guide 133 having a work mounting tool 132 at its tip, and a work guide drive section 134 for operating the work guide 133. Fixed.

The work guide 133 has a round bar-shaped shaft 136.
A workpiece mounting tool 132 that fixes the base end of the arm 137 to the tip of the arm 137 and fits into the workpiece hole 131a of the workpiece 131 machined at the tip of the arm 137.
is removably attached to the shaft 136.
It is attached to the work guide driving section 134 at the base end thereof, and is rotatably supported with respect to the lathe C by a flange 138. The work mounting tool 132, which has a cylindrical tip, is available in various diameters and can be easily replaced depending on the type of work. The work guide drive unit 134 includes a rotation mechanism 140 for rotating the work guide 133.
, a positioning mechanism 141 for regulating the rotation angle thereof, and an advancing/retracting mechanism 142 for moving the entire work guide 133 forward and backward. The rotation mechanism 140 is specifically a rotary actuator, and the shaft 136 of the work guide 133 is connected to the rotation plate 143, the positioning plate 144, and the advance/retreat plate 14.
5 in order and is directly connected to the shaft of the actuator 140. Here, the shaft 136 is fixed to the rotating plate 143, and the positioning plate 14
4 and the advance/retreat plate 145. The positioning mechanism 141 is the positioning plate 1
A cylinder 146 is fixed to the rotary plate 144, and its piston rod 147 is inserted through a hole 148 formed in the positioning plate 144 so as to face a positioning hole 149 formed in the upper center of the rotary plate 143. The advancing/retracting mechanism 142 includes guide shafts 151 and 15 fixed on the lathe C and installed parallel to each other.
The reciprocating plate 145 is slidably supported between the piston rods 153 of the cylinder 152 fixed to the lathe C, and
The work guide 133 is driven by the cylinder 152.
The whole can be moved forward or backward.

Here, the rotary actuator 140 moves the work guide 133 into three positions a, b, and c shown in FIG.
A metal projecting piece 154 is formed protruding from the upper end of the rotating plate 143, and three protruding pieces 154 are formed on the upper part of the positioning plate 144, corresponding to the above-mentioned positions a, b, and c, respectively. Solenoid 155, 15
6,157 are installed, each solenoid 15
5, 156, and 157 sequentially attract the protruding pieces 154, thereby positioning the work guide 133 at each of the positions a, b, and c. Further, when the work guide 133 is in position b, the cylinder 146 moves its piston rod 147 into the positioning hole 1.
44 to enhance its stopping function.

The work conveyor 10 will also be explained with reference to FIG.
It is located just outside.

The opening/closing lid 161 is attached adjacent to the work guide 133 so as to be able to freely open downward, and when it comes from the work conveyor 10 to the C position, it comes into contact with a pressing tool 162 provided on the side thereof and is pushed open. It's getting old.

The workpiece conveyor 10 is arranged at an angle below the opening/closing lid 161, and the workpiece chute 163 fixed to the upper part has a box shape with an upper opening and a hook-shaped engagement plate 164 is formed at the tip. There is.

Referring to FIGS. 8 and 9 regarding the operation of the workpiece carry-out device D, the workpiece guide 133 is in the advanced state at position a1 while the bar material 3 is being processed, and when the processing is almost completed, cutting off for separation is started. At the same time, the cylinder 152 is driven to retreat to position a2, and the work mounting tool 132 at the tip is inserted into the work hole 131a of the work 131 and stands by.

When the cut-off is completed, rotary actuator 1
40 and solenoid 157 are activated, the work guide 133 is rotated to position C1 and stopped.
At this time, the pressing tool 162 attached to the side of the arm 137 comes into contact with the opening/closing lid 161 of the window 160 to open it, and at the same time, the engagement plate 164 moves into the gap 165 between the arm 137 and the workpiece 131 shown in FIG. is inserted and engaged. From this state, the cylinder 152 is then driven and the work guide 133 is placed at position C.
2, the workpiece 131 is prevented from advancing by the engaging portion 164 and detached from the workpiece mounting tool 132,
It falls into the work chute 163 and is transferred while rolling.

Next, the solenoid 157 is de-energized, and at the same time another solenoid 156 is energized, causing the cylinder 14
6, the rotary actuator 140 operates with the tip of the piston rod 147 in contact with the positioning plate 144, the work guide 133 rotates to the position b, and the piston rod 147 moves into the positioning hole 149 of the rotation plate 143. It gets stuck in and stops.
Then, when the machining of the bar 3 approaches the end, the piston rod 147 retreats from the positioning hole 149, the solenoid 156 becomes emergency energized, another solenoid 155 is energized, the rotary actuator 140 is operated, and the work guide 133 is a again
Rotate to position 1. The workpiece guide 133 repeatedly performs the above operation to remove the processed workpiece 13.
1 is transferred from the chuck 7 to the work conveyor 10.

Note that the position C of the workpiece guide 133 is adjusted so that the center lines of the chuck 7 and the workpiece mounting tool 132 are aligned, and the opening/closing lid 161 has a slit through which the engagement plate 164 of the workpiece chute 163 passes when opening and closing. is assumed to have been formed.

The remaining material carrying out device E consists of a remaining material catcher 11 shown in FIG. 10 and a remaining material receiver 12 shown in FIGS. 1A and 1B. The residual material catcher 11 includes a base 166 fixed to one tool mounting surface 128 of the turret 8, a piston 167 that is driven up and down by hydraulic pressure within the base 166, and a piston 167 that is pivotally supported by the base 166 and has the above-mentioned components. Grip 16 connected to piston 167 to open and close
It consists of 8. The remaining material 169 remaining after cutting out the workpiece 131 from the bar 3 is gripped by the gripper 168, and then the turret 8 advances while rotating and is released on the box-shaped residual material receiver 12 to collect the residual material. Uke 1
It falls and is stored inside 2.

Incidentally, reference numerals 177 and 178 indicate ports through which oil flows into and discharges from the cylinder 179.

Further, in front of the residual material catcher 11, a sizing stopper 170 shown in FIG. 15 is fixed on the same tool mounting surface 128. The sizing stopper 170 is provided with a sliding shaft 174 in a base 171 which is biased to protrude by a spring 172 and has an abutment plate 173 at its tip, so that the bar 3 pushed out from the chuck 7 is pushed out against the abutment plate 173. By pressing the contact plate 173, the inclined surface 175 provided at the center of the sliding shaft 174 pushes down the ball-shaped valve 176, fluctuating the oil pressure of the hydraulic circuit including the valve 176, and converting this into an electric signal. This is what is converted and transmitted to chuck 7. That is, by appropriately changing the thickness of the abutment plate 173, the time point at which the chuck 7 chucks the bar 3 can be freely set, but the machining dimensions of the bar 3 using this method can be measured by changing the turret every time one workpiece is cut out. does this by rotating, so
Once the dimensions are set, it is possible to obtain the same dimensions for all workpieces with high accuracy.

To summarize the operation of the lathe configured as above again, from the bar stocker 1 to the bar guides 14, 53.
The bar material 3 loaded above is sequentially fed into the lathe C by the feed roller device 5, and after being dimensioned by the sizing stopper 170, it is gripped by the chuck 7 and processed, and the cut workpiece 131 is transferred to the unloader 9. The workpiece is conveyed to the workpiece conveyor 10 by the workpiece conveyor 10. Further, the remaining material 169 is stored in the remaining material receiver 12 by the remaining material catcher 11. When the remaining material stocker 1 runs out of bars 3, a feed bar 4 is then fed by the feed bar supply device 2 and transported in the same manner as the bars 3, but this feed bar 4 is placed in the feed bar clamp device immediately before the chuck 7. At the same time, the feed roller device 5 is reversely rotated and returned to its original position, and is again supported by the feed bar supply device 2, completing the entire stroke.

Note that the configuration of the feed bar supply device 2 is not limited to that described above, and the shaft 42 is directly connected and fixed to the piston rod 44 of the cylinder 43, and the arms 45, 48, 48 are not rotated, but are supported by this. With the cylinder 43, the arm 45,
The feed bar 4 may be placed on or retracted from the bar guide 14 by driving the feed bars 48 and 48 up and down.

As described above, the present invention relates to a feeding device for the feed bar in the above-mentioned process. According to this device, the feed bar is provided in parallel with the bar feeding section, and moreover, it is configured to be retracted upward when not in use.

Therefore, the entire lathe can be downsized by eliminating the extra floor space required for installing the feed bar supply device, and this has been achieved using an extremely simple mechanism without causing any problems in feeding the bar material. .
In addition, we installed a device that detects when the feed bar has advanced to just before the chuck, and a device that clamps the feed bar and stops the feed bar upon confirmation of this sensing device. Can be used as a means of transportation. Therefore, the overall configuration can be simplified compared to a system in which a feed bar transfer device is provided separately (see, for example, Japanese Patent Publication No. 54-6291).

[Brief explanation of drawings]

Fig. 1A is a plan view showing the entire lathe that employs this device, Fig. 2B is a side view of the same, Fig. 2A is a side view of the bar supply device, Fig. 3 is a front view of the same, and Fig. 3 is a feed roller. 4A is a plan view showing the feed roller device, FIG. 5A is a plan view showing the feed roller device, FIG. 6 is a longitudinal sectional view showing the feed bar clamp device, FIG. 7 A is a plan view showing the unloader, FIG. 7 B is a side view, and FIGS. 8 and 9 are FIG. 10 is a vertical sectional view showing the remaining material catcher, and FIG. 11 is a partially vertical sectional side view showing the sizing stopper. 3...Bar, 4...Feed bar, 7...Chuck, 14...Bar guide, 42...Shaft,
43... Lifting device, 45... Arm.

Claims (1)

[Scope of utility model registration request] A bar guide on which a bar to be processed is placed and guided to the chuck section, a bar feeder that transfers the bar placed on the bar guide to the chuck section, and a bar feeder arranged parallel to the bar guide. a feed bar that abuts against the rear end of the bar on the bar guide and feeds the bar to the chuck; an arm that is pivotally supported by the shaft to support the feed bar; and a feed bar that is connected to one end of the arm. a device for sensing that the feed bar has advanced to just before the chuck portion, and a device for clamping the feed bar upon confirmation of the sensing device,
A feed bar supply device for a lathe that places the feed bar on a bar guide by driving the lifting device and clamps the feed bar to stop the feed bar upon confirmation by the sensing device.