JP2611908B2 - Super finishing plane machine for reciprocating cutting woodworking - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reversible cutting type woodworking super-finishing plane machine in which a reversible sheet feeding device and a sheet feeding guide surface provided with a plane blade are opposed to each other so as to be relatively movable.

[0002]

2. Description of the Related Art There have been proposed various reciprocating-cutting superfinishing plane machines for woodworking in which a reversible sheet-feeding device and a sheet-feeding table provided with a plane blade are provided so as to be movable relative to each other.

[0003]

In this super finishing plane for woodworking, the work material is cut twice in one reciprocating stroke by cutting the work material in the forward and backward strokes of the work material. By repeating this reciprocating process several times, a predetermined cutting amount is obtained.

[0004] By the way, this type of reciprocating cutting type super finishing machine for woodworking is usually designed to cut the material by arbitrarily setting the number of reciprocating times of the material as disclosed in Japanese Utility Model Laid-Open No. 58-74504. Is performed several times continuously. However, in response to the reduction in the thickness of the material due to the continuous cutting, there is a problem that the reversible material feeding device lacks the treading pressure of the material and causes a defective material feeding. .

On the other hand, in order to solve such a problem, a configuration in which the reversible material feeding device is mechanically moved up and down for each stroke may be proposed. However, the waiting time of the work material is long, so that the cutting efficiency is reduced. There was a problem that it was bad. An object of the present invention is to eliminate the problems of the conventional configuration.

[0006]

According to the present invention, a front end of a plane blade in a material feeding passage and a rear end of a planing blade are disposed on a side of a material feeding table to detect a rear end of a processing material in a running direction. The detection switches LS ₁ and LS ₂ and the detection switches LS ₁ and LS ₂
A timer T that operates in accordance with the detection of the passage of the rear end in the traveling direction of the workpiece by the timer T, and the time-consuming use of the timer T stops feeding of the reversible material feeding device, and from a predetermined cutting amount C,
The predetermined cutting amount c _n is subtracted, and when the predetermined cutting amount C> 0, the driving direction of the reversible sheet feeding motor is reversed without reversing the reversible sheet feeding device, and the feeding is restarted, and the predetermined cutting amount C ≦ In the case of 0, the reversible feeding device is lowered by a height substantially corresponding to the predetermined cutting amount, and the predetermined cutting amount C is set again. And a drive control means having control contents to be restarted.

[0007]

[Action] forward stroke of the workpiece and each backward stroke, a predetermined depth of cut C, by subtracting a predetermined amount of cutting c _n, when該切write amount C is digested by subtraction, the reversible Okuzai device The sheet feeding interval is lowered by a height substantially corresponding to the predetermined cut amount. For this reason, the reversible material feeding device moves for each of a plurality of reciprocating strokes, and the waiting time of the work material is significantly reduced.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.

1 to 5 show an example of a super finishing plane for woodwork to which the present invention is applied. On a base 1, a material feeding table 2 having an upper surface as a material guiding surface 2a is provided. . A rotary table 3 on which knife stocks 4a and 4b are mounted is provided at the center of the material feeding table 2, and a forward plane blade 5a and a re-plane blade 5b supported on the knife stocks 4a and 4b, respectively.
The leading end of (see FIG. 5) is made to protrude to the material feeding guide surface 2a by the elevation control means. This elevation control means is constituted by drive motors M3, M4 and the like. The knife stock 4a is tilted by the drive motor M3 and the knife stock 4b is tilted by the drive motor M4. In the case where the tip of the reshaping blade 5b projects downward from the material feeding guide surface 2a and the resurfacing blade 5b is retracted downward to reverse the work material, the tip of the reshaping blade 5b protrudes from the material feeding guiding surface 2a, and The blade 5a is retracted downward.

A reversible material feeder 7 is provided on the material feed table 2.
However, it is opposed to the base 1 via a material feeding passage. The reversible material feeding device 7 includes a lifting motor M that rotationally drives a lifting screw 8.
2 to move up and down along the guide posts 9, 9; The reversible feeding device 7 is configured by supporting a driving roll 11 driven by a reversible feeding motor M1 and a driven roll 12 back and forth, and extending a feeding belt 13 between the rolls 11 and 12. I have. Further, inside the lower running portion of the material feeding belt 13, there are arranged treading rolls 14 which are urged downward by springs or the like. These members are hidden by the frame cover 16. In addition, auxiliary tables (not shown) are provided on the entrance side and the exit side of the material feeding table 2.

In order to set the interval between the reversible material feeding device 7 and the material feeding table 2 to be optimal so that an appropriate material feeding pressure can be applied to the processed material, the reversible material feeding device 7 has an inlet side. , A detection switch LS4 is provided. That is, the lifting / lowering operation piece 20 urged downward by the ridge 21 interposed on the upper portion is disposed in the frame cover 16. The lifting operation piece 20 is supported by a receiving plate 22 that covers a roller supported at its lower end. The receiving plate 22 is rotatably supported by a support shaft 23, and is urged by a spring 24 in a direction in which the lifting operation piece 20 is supported. A detection switch LS4 is mounted on the upper end of the lifting / lowering operation piece 20, and the detection switch L
The detection end of S4 contacts the ceiling surface of the frame cover 16,
Thus, the on operation is performed.

On the other hand, the material feeding table 2 has a detection switch LS3 for detecting the supply of a work material at an entrance side thereof,
A detection switch LS1 for controlling the reverse running of the work material is sequentially arranged adjacently. Then, the detection switches LS1,
Actuating pieces 26 and 27, one end of which is pivotally supported and the other end of which is urged upward by a spike, are attached to LS3, and their curved edges slightly protrude from the material feeding guide surface 2a, respectively. Is supplied or passed, and pushes the protruding edge downward,
The detection switches LS1 and LS3 are each turned on. Further, a detection switch LS2 for controlling the normal feeding of the work material is provided at the rear end of the material feeding passage. Similarly, the detection switch LS2 is pivotally supported at one end and urged upward at the other end by an ridge, and an operating piece 28 having a curved end protruding from the material feeding guide surface 2a protrudes. Is pushed downward to turn on the detection switch LS2.

A slit plate s is fixed to a drive shaft of a lifting motor M2 for lifting and lowering the reversible material feeding device 7, and an encoder e for detecting the number of passages of the slit is provided. The drive amount of M2, that is, the amount of elevation of the reversible material feeding device 7 can be detected.

Further, a timer T for controlling the reversal position of the work material and a central control unit CPU constituting drive control means for controlling the driving of each motor are mounted on the super finishing plane machine.

Next, the operation of the reciprocating cutting type super finishing plane for woodworking having the above-mentioned construction will be described with reference to the flow charts of FIGS. This series of operations is controlled by the central control unit CPU.

First, a work material is supplied onto the material feeding table 2. At this time, if the thickness of the work material is large, the tip of the work material tilts the receiving plate 22, pushes up the lifting / lowering operation piece 20, and the detection switch LS4 is turned on. As a result, the lifting motor M2 is driven, and the reversible material feeding device 7 is raised, and accordingly, the detection switch LS4 is turned off. As a result, a timer (not shown) is operated, and the timer stops rising after t ₁ seconds from the OFF operation. This series of actions
Before performing the positioning operation of the following reversible Okuzai device 7, the plate thickness of the workpiece is for wide Okuzai passage, the time of the t ₁ seconds, ensures the detection switch LS4 This is set to secure the off position. Therefore, when the material feeding passage is wider than the thickness of the work material from the beginning (when the detection switch LS4 is not turned on by the supply of the work material), such an operation is omitted and the process directly proceeds to the step.

Then, after the provisional position of the reversible material feeding device 7 is set, a processing material is further charged (step).
Then, the operating piece 26 is pressed below the material feeding guide surface 2a, and the detection switch LS3 is turned on. Then, by turning on the detection switch LS3, in order to remove the influence of inertia accompanying the lowering of the reversible material feeding device 7, the reversible material feeding device 7 is once excessively lowered, and then raised again to perform positioning. .

More specifically, the detection switch LS3
When the switch is turned on, the lifting motor M2 is reversely driven to lower the reversible material feeding device 7, and the detection switch LS4 is turned on (step). Then, the on position is set as the origin, and further lowered until t ₂ seconds elapse. The amount of descent from the origin position is detected by an encoder e connected to the elevating motor M2. Then, after the elevating amount H is determined, the elevating motor M2 is driven forward this time to raise the reversible material feeding device 7. Then, the lift H is digested, and the lift H _{0 is} further reduced.
Then, the drive of the lift motor M2 is stopped. Thereby, the reversible material feeding device 7 is positioned. In this operation, the time t ₂ is a time appropriately determined within a reasonable range. This time, digested increases by actual lowering amount H content read inverted, which was to rise further by elevating the amount H _0, therefore, only the lift amount H ₀ has the meaning It will be.

The elevation amount H ₀ is predetermined and corresponds to a cut amount C ₀ described later. That is, if the elevation amount H ₀ changes, the cut amount C ₀ also changes. As described above, the reversible sheet feeding device 7 is once lowered, again inverted and raised again, thereby removing the influence of the amount of inertia generated by the influence of its own weight at the time of processing, and constantly removing the upper surface of the processed material irrespective of the thickness of the processed material. , The position of the reversible material feeding device 7 can be fixed.

[0020] By positioning the reversible Okuzai device 7, previously inputted depth of cut C ₀ value 0.5 mm, cutting the number of times N, the rear cutting amount c _1, the pre-cutting quantity c ₂ are read (step). The cut amount C ₀ is a value input corresponding to the elevation amount H ₀ , and the number of cuts N is a value input in consideration of the achieved cut thickness of the workpiece. Also, in the first reciprocating stroke of the work material, the rear cutting amount c ₁ is adjusted by the forward plane blade 5a to the front cutting amount c.
Numeral ₂ is an estimate of the amount to be cut by the replaner blade 5b in the first reciprocating stroke of the work material. Therefore, these values can be changed according to various conditions. And with this reading, n representing the number of reciprocations is set to 1, depth of cut C is set as the depth of cut C _0.

Then, the reversible material feeding motor M1 is driven,
The reversible material feeding device 7 is driven in the normal feeding direction, and the workpiece is fed in advance by the driving. In this case, the height positions of the forward plane blade 5a and the return plane blade 5b are such that the forward plane blade 5a protrudes from the material feeding guide surface 2a and the return plane blade 5b is retracted downward. With the advance of this work material, by the work material tip,
The detection switch LS1 is turned on, and is turned off with the passage of the rear end of the workpiece, and the timer T is operated by this turning back. Then, the lower surface of the processed material is cut by the forward plane blade 5a, and after the rear end passes over the forward plane blade 5a, the set time limit of the timer T is consumed.

With this passage, c _n = ｛1− (n−1)
0.05} and c _1, further and depth of cut C = C-c _n (step). Here, c _n indicates the amount of cutting in the n-th round. Therefore, depth of cut C, minus the amount of cutting c _n becomes the new value.

Here, the equation {1- (n-1) 0.05} c ₁
Is an equation set in advance in consideration of the fact that the material feeding pressure decreases with reciprocating cutting, and therefore the amount of cutting in one stroke decreases. According to this equation, the amount of cutting by the first outgoing plane blade 5a is 0.100 mm (= c ₁ ), 0.095 mm for the second time, and 0.090 mm for the third time. These are numerical values only for the outward travel, and are set separately in the return travel as described later.

After such calculation, the knife stock 4a,
4b is tilted by drive motors M3 and M4,
Is projected from the material feeding guide surface 2a, and the forward plane blade 5a is retracted downward.

When the cut amount C ≦ 0, the process proceeds to the next step. If the cut amount C> 0, the process shifts to the return stroke (B). In the return stroke, the reversible material feeding motor M1 starts to be driven in the reverse direction with the expiration of the set time of the timer T. Then, n representing the number of reciprocations is compared with the number of cuts N (step). If n is less than the number of cuts N, n = n + 1 is set, and the ON operation has already been performed with the advance of the workpiece. The detection switch LS2 returns to OFF, and the timer T operates by the return to OFF. Then, by the backward running of the work material, the lower surface is cut by the replane blade 5b, and after the rear end passes over the replane blade 5b, the set time limit of the timer T is consumed.

With this passage, c _n = ｛1- (n
-1) 0.05｝ c ₂ (step), and the cutting amount C
= A C-c _n, is obtained by subtracting the amount of cutting c _n as a new value.

Here, the above {1- (n-1) 0.05} c ₂
Is a formula set in advance in consideration of the fact that the material feeding pressure decreases with the return stroke cutting, and therefore the cutting amount accompanying the supply of the work material decreases. According to this equation, the amount of cutting by the first replaner blade 5b is 0.080 mm (= c ₂ ), 0.076 mm for the second time, and 0.072 mm for the third time. These are the values for the return trip only.

Thereafter, the leading end of the forward plane blade 5a protrudes from the feed guide surface 2a, and the return plane blade 5b retreats downward.

When the cutting amount C.ltoreq.0, the process proceeds to the next stage. Otherwise, the forward stroke (F) is executed again.

On the other hand, when the cut amount C ≦ 0 in the reciprocating stroke, it means that the planned cutting amount in a state where the material feeding interval is constant has expired. Then, assuming that the cut amount C = C ₀ + C (step,), the lift motor M2 is driven, and based on the reading of a predetermined value by the encoder e, the drive of the lift motor M2 is stopped. The reversible sheet feeding device 7 corresponding to C ₀ (= 0.5 mm) is lowered, and the process proceeds to the forward stroke (F) or the return stroke (B). The reason for setting C = C ₀ + C here is to absorb a negative error in the previous stage. That is, if the cutting amount C = −0.013 in the previous stage and the condition of the cutting amount C ≦ 0 is satisfied, in the next stage, the cutting amount C = 0.5−0.013 = 0.487. It was done. Incidentally, considering the occurrence of the stop position error of the elevator motor M2, it may be calculated depth of cut C by replacing the readings of the encoder e after the stop on the depth of cut C _0.

As described above, the reversible material feeding device 7 performs the reciprocating cutting of the work material while maintaining the position until the predetermined cutting amount C is reduced in the calculation, and the reversible material feeding device 7 keeps the cutting value. As a result, the reversible sheet feeding device 7 descends by a height corresponding to the predetermined cutting value, and shifts to the next reciprocating cutting stroke.

If the number of cuts N = n in the return stroke (B) after the stepwise cutting, the leading end of the working material in the feeding direction (the rear end of the working material) is detected by the detection switch LS3.
Is turned on and returns off with the passage of the work material, the drive of the reversible material feed motor M1 is stopped, the tip of the forward plane blade 5a protrudes from the material feed guide surface 2a, and the return plane blade 5b is moved downward. After evacuating to and preparing for the next time, the cutting of the work material will expire.

In the above-mentioned number-of-times specification, the total number of reciprocations is specified, but the number of steps may be specified. In this case, for example, by specifying three stages, it is possible to specify a cutting of approximately 3 × 0.5 = 1.5 mm.

[0034]

According to the present invention, as described above, by subtracting a predetermined amount of cutting c _n from a predetermined depth of cut C per forward stroke as and backward stroke,
When the predetermined cutting amount C is consumed by reciprocating cutting, the process proceeds to the next stage, where the reversible material feeding device 7 is lowered, and the predetermined cutting amount C is further reduced.
Until the digestion, the reciprocating operation is performed while the reversible material feeding device 7 is stopped, and the cutting operation is performed a predetermined number of times by repeating the stepwise operation. In contrast to the configuration in which the reversible material feeding device 7 is always lowered for each reciprocating cutting without causing the material feeding failure due to the above, there are excellent effects such as a short waiting time of the work material and efficient cutting. is there.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram of a super finishing plane machine for woodwork of the present invention.

FIG. 2 is a front view of a super finishing plane for woodworking according to the present invention.

FIG. 3 is a side view of the same.

FIG. 4 is a plan view of the same.

5 is a vertical sectional side view of a part of the material feeding table 2. FIG.

FIG. 6 is a flowchart illustrating drive control.

FIG. 7 is a flowchart illustrating drive control.

FIG. 8 is a flowchart illustrating drive control.

[Explanation of symbols]

2 Feeding Table 5a Outgoing Plane Blade 5b Return Plane Blade 7 Reversible Feeding Device LS1 to LS4 Detection Switch M1 Reversible Feeding Motor M2 Elevating Motor C Cut Amount c _n Cutting Amount

Claims (2)

(57) [Claims] 1. A woodworking super-finishing plane machine in which a reversible material feeding device driven by a reversible material feeding motor and a material feeding table having a plane blade are opposed to each other so as to be relatively movable. Detection switches LS ₁ and LS ₂ which are respectively disposed on the side of the sheet feeding table at the front position and the rear position of the plane of the sheet feeding passage to detect the rear end of the workpiece in the traveling direction, and the detection switches LS
₁ and LS ₂ , a timer T that operates in response to the detection of the passage of the rear end of the work material in the running direction, and stops the material feeding of the reversible material feeding device with the expiration of the timer T, and sets a predetermined cutting amount C
, A predetermined cutting amount c _n is subtracted from the reversible material feeding motor M without raising / lowering the reversible material feeding device when the predetermined cutting amount C> 0.
1 and the feeding direction is restarted, and the predetermined cutting amount C ≦ 0
In the case of, after lowering the reversible material feeding device by a height substantially corresponding to the predetermined cutting amount, and again setting the predetermined cutting amount C,
A reciprocating cutting type super finishing machine for woodworking, comprising: a drive control means having control contents for reversing a driving direction of a reversible material feeding motor M1 and restarting material feeding. Of Okuzai passage inlet of 2. A workpiece, and the detection switch LS ₄ disposed reversible Okuzai apparatus further slightly behind the detection switch LS _4, disposed Okuzai table side provided with a detection switch LS _3, wherein the drive control means, with the insertion into Okuzai passage of the workpiece, when the front end of the workpiece is detected switch LS ₃ detects, drives the elevator motor M2 of the reversible Okuzai device to, to set the height position of the reversible Okuzai device on position of the detection switch LS ₄ as a reference, while Okuzai initiated by said position setting, along with the expiration of the predetermined grinding times, the running of the workpiece to be reverse feeding claim 1 reciprocating cutting formula woodworking Superfinishing planer according to characterized in that it comprises a control content so as to reverse feeding stopped by detecting the direction trailing end detection switch LS _3.