JP2616919B2 - Sized feeder - Google Patents

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial application field) The present invention relates to a sizing feeding device in a band sawing machine or the like.

(Prior art) As an example of a conventional sizing feeder, for example,
Japanese Patent Application Laid-Open No. 40430 (a device for detecting a defective size of a material to be cut in a band sawing machine).

This is achieved by providing a feed vise device that is movable in the front-rear direction with respect to the main body vise device, providing a detection body for detecting that the fed material sandwiched by the feed vise device has shifted, and covering the feed vise device. By detecting the displacement of the cut material, the sizing failure is prevented.

(Problems to be solved by the invention) However, in the above-mentioned fixed-size feeding device,
Since slippage is detected and cutting is stopped when slippage occurs, it is possible to prevent inconsistent sizing, but it is necessary to manually repeat the feeding operation to improve productivity. There was a problem that it was not possible.

Therefore, an object of the present invention is to provide a sizing material feeding device capable of performing sizing material feeding fully automatically even if slippage occurs during material feeding.

[Structure of the Invention] (Means for Solving the Problems) In view of the above-described conventional problems, the present invention provides a material feeding vise device capable of reciprocating in a direction approaching and moving away from a processing position in a processing machine. A feed amount command unit for commanding a feed amount of a workpiece to be processed by the processing machine; and a stroke for calculating a reciprocating stroke value of the material feeding vice device based on the feed amount from the feed amount command unit. A value calculation unit, and a sequence control unit that controls reciprocation of the material feeding vise device based on a calculation result of the stroke value calculation unit,
Detecting a slip amount between the material feeding vise device and the work material at the time of material feeding operation of the work material by the material feeding vise device, and giving the slip amount to the stroke value calculation unit for feed correction. And a slip amount detection unit.

(Example) Hereinafter, an example of the present invention is described using an accompanying drawing.

1 and 2 are a perspective explanatory view and a plan view of a horizontal band saw machine embodying the present invention. On a base 3 of the horizontal band sawing machine 1, a support 5 on which the material to be cut M is placed,
A main body vise device 7 for holding and fixing the cut material M placed thereon and a feed vise device 9 for holding the cut material M and performing a feed operation are mounted.

A saw blade housing 11 is supported on the base 3 via a hinge pin (not shown) so as to be vertically rotatable. A drive wheel (not shown), which is rotated by a drive means such as a motor, is provided inside one housing portion 13 of the saw blade housing 11, and a driven wheel (not shown) is provided inside the other housing portion 15. (Not shown).

A loop-shaped saw blade 17 is wound around the drive wheel and the driven wheel, and the saw blade 17 is driven to run by rotating the drive wheel.

3 and 4 are a plan view and a left side view showing details of the material feeding vise device 9.

As shown in the figure, the material feeding vise device 9 has a sliding base 19 that slides along rails R ₁ and R ₂ provided on the base 3, and is fixed on the base 19. A vise 21 and a moving vise 23 are provided. The moving vise 23 is a cylinder
In this embodiment, the material M is formed so as to be able to approach and separate from the fixed vise 21 via the rod 25 by driving the Sy1, and the workpiece M can be clamped between the fixed vice 21 by driving the cylinder Sy1.

Further, a gap is provided in the vertical direction on the contact surface of the fixed vise 21 with the workpiece M, and one side of the roller 33 held by the solenoid 31 via the holder 27 and the spring 29 faces the gap. Have been. The roller 33 is retracted with respect to the gap when the solenoid 33 does not operate, and is advanced with respect to the gap when the solenoid 33 operates,
In this embodiment, one side surface of the roller 33 is elastically brought into contact with the workpiece M sandwiched between the vise 21 and 23. The holder
On the upper surface of 27, an encoder that reads the amount of rotation of roller 33
35 are provided.

Referring again to FIG. 2, the base 3 is provided with an encoder 37.
A ball screw 41 rotated by a motor 39 is provided. A stopper screwed to the ball screw 41 on the rear side of the material feeding vise device 9 and movable in the front-rear direction by the rotational driving of the ball screw. 43 are provided.

Also, at the rear side of the base 3, the material feeding vise device 9 is provided.
Is provided with a cylinder Sy2 capable of moving the cylinder back and forth.

Further, the fixed vice device 7 includes a material feeding vise device 9.
Is provided with a cylinder Sy3 for holding the cut material M fed by the above.

The stopper is provided on the rear side surface of the material feeding vise device 9.
A limit switch LS1 for detecting the position of 43 is provided. A limit switch LS2 for stopping the material feeding vise device 9 is provided on the rear side surface of the fixed vice device 7.

 FIG. 5 is a block diagram of the control device.

The feed amount command section 45 commands a fixed size L to be cut.

Stroke value calculation unit 47, with respect to sizing L, consideration of the maximum stroke L _0, the n integer, as the remaining amount of L _1, L = n
・ L ₀ + L ₁ is calculated.

The sequence control unit 49 performs a predetermined sequence process to give the stroke calculated by the stroke value calculation unit 47 to the cylinder Sy2.

The motor drive unit 51 outputs a servo command to the motor 39 in sequence according to a command from the sequence control unit 49.

The cylinder driving units 53, 55, and 57 perform sequence control of the cylinders Sy1, Sy2, and Sy3 in accordance with a command from the sequence control unit 49.

The LS signal input section 59 inputs an operation signal of the limit switches LS1 and LS2.

The slip amount detecting section 61 receives the detection signal of the encoder 35, calculates the slip amount of the workpiece M with respect to the material feeding vise 9, and calculates the calculated slip amount ΔL as the stroke value calculating section 47.
To give.

The operation of the horizontal band sawing machine having the above configuration will be described with reference to FIGS. 6 and 7. FIG.

Figure 6 is a feeding amount L ₁ is a flowchart illustrating a processing method when shorter than the maximum stroke L _0.

In step 601, inputs the feeding amount L _1.

In step 602, the stroke value is at L = L _1, n = 0
Since it is, to position the stopper 43 in the position L _1.

In step 603, the limit switch LS1 is
The material-feeding vise device 9 is retracted until it comes into contact with the material, and then the material to be cut is sandwiched between the vise 21 and 23 to feed the material toward the fixed vise 7.

In step 604, the slip amount at this time is detected by the encoder 35, and if there is a slip, the process proceeds to step 605;

In step 605, the slip amount ΔL is set to a new feed amount in order to perform additional feeding according to the slip amount ΔL, and the stopper 43 is positioned in step 602. As a result, the slip amount ΔL is corrected in step 603.

In step 606, the cylinder Sy3 of the fixed vice device 7 is operated to hold the workpiece M, and then cut the workpiece M while lowering the housing 11.

At step 607, the end of the work is determined, and steps 602 to 607 are repeated until the end of the work.

In this example, performed repeatedly cut sizing L _1, since during this period the slip is performed automatically corrected via step 605 even if it is possible to keep the cutting dimensions constantly sizing L _1, the full work There is no need for manual intervention until termination.

Figure 7 is a feed amount is a flowchart illustrating a processing method when longer than the maximum Sukuroku L _0.

When the feed amount L is set in Step 701, Step 702
Then, L = n · L ₀ + L ₁ is calculated, and in step 703, the material is fed n times with the maximum stroke L ₀ .

Then, calculates the total amount △ L slippage as the integrated amount of slippage at each stroke at step 704, then in ,, step 705, and Okuzai added this amount △ L in the remaining amount L _1, at step 706 Disconnect.

In this example, since the slip amount for each stroke is integrated in step 704 and added to the last stroke, it is possible to cut the long material effectively without errors.

In order to perform cutting with higher precision, a correction process of step 604 and subsequent steps shown in FIG. 6 may be added after step 706.

Also, integration of the slip amount △ L performed in step 704 may be performed subsequent to the stroke motion of the remaining amount L _1.

For example, in the embodiment shown in FIG. 6, when the slip amount is detected during the material feeding operation of the material feeding vise device 9, the stopper 43 is made to depend on the material feeding vise device 9 from that point and the front end is stopped. It is efficient to move in the direction.

The present invention is not limited to the above embodiment, but can be applied to a processing machine other than the band saw machine, for example, a drill machine. In addition, the present invention can be implemented in other modes by making appropriate design changes.

[Effects of the Invention] As can be understood from the above description of the embodiments, in short, the present invention provides a material feeding vise device (9) which is reciprocally movable in a direction approaching and moving away from a processing position in a processing machine.
A feed amount command unit (45) for commanding a feed amount (L) of the workpiece (M) processed by the processing machine; and the feed amount (L) from the feed amount command unit (45). A stroke value calculator (47) for calculating a reciprocating stroke value of the material vise device (9) based on the calculation result of the stroke value calculator (47); A sequence controller (49) for controlling the movement, and between the material feeding vise device (9) and the material (M) when the material feeding device (9) feeds the material (M). And a slip amount detection section (61) for detecting the slip amount and providing the slip amount to the stroke value calculation section (47) for feed correction.

With the above configuration, according to the present invention, the feed amount command unit 45
When the feed amount L of the workpiece is given to the stroke value calculator 47, the reciprocating stroke value of the material feeding vise device 9 is calculated based on the feed amount L, and the sequence controller 49 controls the stroke value based on the calculation result. The necessary reciprocating operation of the material feeding vise device 9 is performed in order to feed the work material underneath.

When a slip occurs between the material feeding vise device 9 and the workpiece during the material feeding operation of the workpiece by the material feeding vise device 9,
The slip amount is detected by a slip amount detecting section 61 and is given to the stroke value calculating section 47 so that the slip amount is corrected.
Command, the workpiece can be fed automatically, and when slippage occurs, the slip amount is automatically corrected. The material can be made.

[Brief description of the drawings]

FIG. 1 is a perspective view of a band saw machine embodying the present invention, FIG. 2 is a plan view of the band saw machine, FIGS. 3 and 4 are a plan view and a left side view of a material feeding vise apparatus, and FIG. FIG. 6 and FIG. 7 are block diagrams of the control device, and are flowcharts of the material feeding process. 7 ...... fixed vise assembly, 9 ...... Okuzai vise assembly 35 ...... encoder, 39 ...... motor 47 ...... stroke value calculation unit, M ...... workpiece L ...... feeding amount, L ₀ ...... maximum stroke L ₁ …… Remaining feed amount

Claims (1)

(57) [Claims] 1. A material feeding vise device (9) reciprocally movable in a direction approaching and moving away from a processing position in a processing machine, and a feed amount (L) of a workpiece (M) processed by the processing machine. And a stroke value calculating unit for calculating a reciprocating stroke value of the material vise device (9) based on the feed amount (L) from the feed amount command unit (45). (47), a sequence control unit (49) for controlling reciprocation of the material feeding vise device (9) based on the calculation result of the stroke value calculating unit (47), and the material feeding vise device (9). When the material (M) is fed, the slip amount between the material vise device (9) and the material (M) is detected, and the stroke value calculation value (47) is corrected for the feed amount. A slip amount detector (61) that gives the slip amount to
And a sizing feeder comprising: