JPH11277503A - Ultrafinishing plane machine for woodworking - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a movable supporting piece from running excessively by inertia force in an ultrafinishing plane machine for woodworking with a constitution which controls elevating/lowering of a plane base by means of a movable supporting piece. SOLUTION: A rack 38 is formed on the side face of a movable supporting piece 35 and a pinion 31 linked with a driving shaft of elevating/lowering motors M3 and M4 is meshed with the rack 38. In the ultrafinishing plane machine for woodworking, the lowering/stopping position of a plane base is provided by a terminal end e of the rack on one side and after the pinion 31 is disconnected with the terminal end e of the rack, lowering/stopping the elevating/ lowering motors M3 and M4 are controlled and furthermore, a counterforce by means of an elastic body 42a is generated in the moving direction of the movable supporting piece 35 to which the plane base is to be lowered. In this case, at the same time when the pinion 31 is disconnected with the terminal end e of the rack, movement of the movable supporting piece 35 is stopped and its lowering/stopping position is provided. It is possible thereby to prevent the movable supporting piece 35 from running excessively by inertia force and elevating, lowering and inclination of the plane base can be optimized.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plane table having a sheet feeding device and a sheet feeding table provided with a plane blade, and having a plane blade mounted with a plane blade protruding above a sheet guide surface. The present invention relates to a woodworking super-finishing plane machine capable of being converted into a position where the cutting edge protrudes from a table and a position where it retreats.

[0002]

2. Description of the Related Art Various super finishing planes for woodworking have been proposed in which a reversible sheet feeding device and a sheet feeding table provided with a plane blade are opposed to each other so as to be movable relative to each other. In this woodworking super-finishing plane machine, by cutting the work material in the forward and backward strokes of the work material, in one reciprocation stroke, to cut twice, and by repeating this reciprocation stroke several times Japanese Patent Application Laid-Open No. 6-238604 discloses a method for obtaining a predetermined cutting amount.
No. has been proposed.

[0003] In this type, a plane table having a re-planing blade protruding the cutting edge rearward and a plane table mounting a forward plane blade protruding the cutting edge forward in a blade mounting groove disposed on a material feeding table. The inclined guide surface is formed along the width direction on the lower surface of the outer edge of each of the plane tables or the base frame supporting the same, and the movable support piece is located immediately below the inclined guide surface. Interposed to support one edge of the plane table, further formed a rack on the side of the movable support piece, meshed each rack with a pinion linked to the drive shaft of the elevating motor, and movable by the drive of the elevating motor The support piece is moved along the inclined support surface, and the plane table is tilted with the inner edge as a fulcrum. In addition, the structure which controls the elevation of this plane table by the movable support piece is not only a super finish plane machine for reciprocating cutting type woodworking with two plane tables as described above, but also a superstructure plane for woodworking with a single plane table. It is also applied to finishing planes.

[0004]

In such a conventional structure, the stop timing of the movable support piece is controlled by controlling a stop detection portion provided on the movable support piece by an ascending detector and a descending detector. At the time of each detection, the lift motor is controlled to stop. However, on the movable support piece, the plane table is mounted from above via the inclined support surface, and the load is moved by the inclined guide surface in the direction of movement of the movable support piece on the side where the plane table descends. Acts as a component force along. For this reason, by driving the lifting / lowering motor, and moving the movable support piece in the direction in which the plane table descends, when the detected portion is detected and stopped by the detector, the inertia force is greatly exerted by the component force, A case where the movable support piece runs excessively occurs.

By the way, in order to reliably detect the detected part by the detecting part, the stop position of the movable supporting piece is usually designed so that the detected part and the detecting part face each other. However, if the above-described excessive running occurs, the detected portion stops after passing through the detecting portion, and thus the detecting portion may not catch the detected portion, and a detection error is likely to occur. For this reason, a separate control mechanism for crisis management is required, which complicates the control mechanism and increases the required driving time when the lifting motor is driven up in the next step. There may be cases where the timing is shifted and non-grinding or grinding is performed halfway. An object of the present invention is to prevent such an excessive running of the movable support piece due to the inertial force.

[0006]

According to the present invention, the lowering end position of the plane table is defined by the rack end on one side, and the lifting motor is controlled to lower and stop after the pinion comes off the rack end. A first stop timing mechanism, and a second stop timing mechanism for controlling the lifting and lowering of the lifting / lowering motor when the predetermined rising / stopping position of the plane table is reached, and the detector for detecting the rising / stopping detected portion provided on the movable support piece by the detector. A second stop timing mechanism for controlling the lifting / lowering of the lifting / lowering motor at the time of detection, and having an elastic body that generates a reaction force in the moving direction of the movable support piece in which the plane table descends. It is characterized by the following.

Here, the first stop timing mechanism includes a timer for defining the descent stop position of the plane table by the end of the rack on one side, and for expiring the time after the pinion comes off the end of the rack. The lifting motor may be controlled to stop descending in synchronization with the digestion.
Thus, after the pinion is securely removed from the end of the rack, the elevating motor stops due to timed digestion.

In this configuration, when the pinion comes off the end of the rack, the driving force of the lifting motor does not act on the movable support piece. In this state, the descent stop position of the plane table is defined. On the other hand, due to its inertia, the movable support piece may move excessively after the pinion comes off the end of the rack. However, due to the elastic body, the movable support piece receives a load (reaction force) opposite to the moving direction. As a result, the movable support piece stops moving as soon as the pinion comes off the end of the rack, and is held at a position where the teeth of the pinion abut the end of the rack. For this reason, the influence of the inertia force is prevented, and excessive running is prevented, and when the pinion is counter-rotated in the next step, the pinion surely meshes with the rack.

On the other hand, the lifting stop of the plane table is performed by a second stop timing mechanism. As the second stop timing mechanism, as before, a mechanism for controlling the ascending / descending motor to ascend / descend by detecting the ascending / stopping detected portion provided on the movable support piece by a detector, or a first stopping mechanism Similarly to the timing mechanism, a configuration is proposed in which the lift stop position of the plane table is defined by the end of the rack on the other side and the lift motor is controlled to stop after the pinion comes off the end of the rack on the other side. .

As another means, there is provided a stop timing mechanism for stopping and controlling the elevating motor when the stop detecting portion provided on the movable support piece is detected by the ascending detector and the descending detector, respectively. In addition, a configuration has been proposed that includes an elastic body that generates a reaction force in the moving direction of the movable support piece in which the plane table descends. In this configuration, an elastic body is applied to the conventional configuration in order to prevent excessive running due to its inertial force.

In other words, an elastic body such as a spring is interposed between the end surface of the movable support piece on the moving direction side and the fixed surface of the apparatus, and a load is applied in the moving direction, whereby excessive running due to inertia can be prevented. The drive is stopped at the same time when the detector detects the descending stop detection target portion.

In each of the above structures, the movable support piece may be provided with an elastic body which generates a reaction force also in the moving direction in which the plane table moves up. That is, in the ascending direction of the plane table, the load of the plane table is acting in the direction opposite to the moving direction of the movable support piece, so that excessive running due to inertia is smaller than when machining is stopped. However, since the inertial force still acts, for example, when the top of the plane table is defined by the table, the movable support piece serves as a wedge to support the inclined guide surface of the plane table and the support of the base. In some cases, a large force is required to extract the movable support piece,
Problems such as troublesome restoration are caused. Therefore, as described above, by providing the elastic body, such a problem can be solved.

[0013]

An embodiment of the present invention will be described with reference to the accompanying drawings. 1 to 4 show an example of a woodworking super-finishing plane machine to which the present invention is applied, and a base 1 is provided with a feeder table 2 having an upper surface as a feed guide surface 2a. A rotary table 3 is provided at a central portion of the material feeding table 2, and plane tables 4a and 4b are mounted in a blade mounting groove 6 formed in the rotary table 3 so as to be tiltable slightly. These plane tables 4a and 4b have forward plane blades 5a and return plane blades 5b mounted on their lower surfaces in an inclined manner, and the tips project from the plane tables 4a and 4b.
The blade is opposed to the cutting edge via a clearance space for polishing debris.

The leading ends of the forward plane blade 5a and the return plane blade 5b supported by the plane tables 4a and 4b, respectively, are alternately protruded to the material guide surface 2a by the lifting drive means. The elevation driving means is constituted by a lifting motor M _3, M _4, etc., the lifting motor M ₄ the鉋台4a,鉋台4b
Tilted by the lifting motor M ₃ to protrude the workpiece when the positive feed is the tip of往鉋blade 5a from Okuzai guide surface 2a,
In the case where the return plane blade 5b is retracted downward and the work material runs backward, the tip of the return plane blade 5b is protruded from the material feeding guide surface 2a, and the forward plane blade 5a is retracted downward. . The details of the elevation drive means will be described later.

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 Okuzai device 7 moves up and down along the guide post 9 and 9 by Okuzai lifting motor M ₂ for rotating the lifting screw 8. The reversible material feeding device 7 supports a driving roll 11 driven by a reversible material feeding motor M ₁ and a driven roll 12 back and forth,
The feed belt 13 is wound around the rolls 11 and 12. A treading roll 14 urged downward by a spring or the like is provided inside a lower traveling portion of the material feeding belt 13.
Are lined up. Each of these members is a frame cover 1
6 is hidden. 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 make the interval between the material feeding passages of the reversible material feeding device 7 with respect to the material feeding table 2 optimal so that an appropriate material feeding pressure can be applied to the work material, the reversible material feeding device 7 has an inlet side. , the detection switch LS ₄ is disposed. 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 LS ₄ is mounted on the upper end of the lifting / lowering operation piece 20.
The detection end of S ₄ contacts the ceiling surface of the frame cover 16,
Thus, the on operation is performed.

On the other hand, a detection switch LS ₃ for detecting the supply of the work material is provided at the entrance side of the material feed table 2,
Detection switch LS ₁ for backhaul control of the workpiece are sequentially disposed adjacent. And the detection switch LS
₁ and LS ₃ are fitted with actuating pieces 26 and 27 having one end pivotally supported and the other end urged upward by a spline, and their curved edges slightly project from the material feeding guide surface 2a, respectively, as will be described later. When the processing material is supplied or passed through and the protruding edge is pushed downward, the detection switches LS ₁ and LS ₃ are each turned on. Furthermore, in the rear end of Okuzai passage detection switch LS ₂ for positive feed control of the workpiece is arranged. This is pivoted detection switch LS ₂ is similarly one end, is upwardly urged at the other end by a spring, a operating piece 28 protruding curved end from Okuzai guide surface 2a protrudes, by the traveling of the workpiece, the projecting edge There has been so pushed downward or is it produces a on-operation of the detection switch LS _2.

Further, the slit plate s is fixed to Okuzai the lifting motor M ₂ drive shaft for raising and lowering said reversible Okuzai device 7,
And an encoder E is provided for detecting the number of passing the slit, thereby, the driving amount of Okuzai lifting motor M _2, that is, to be capable of detecting the amount of vertical movement of the reversible Okuzai device 7.

In addition, the super-finishing plane machine has a timer T ₁ for stopping the feeding of the work material, and a timer T ₂ for controlling the stop of the elevating motors M ₃ and M ₄ described later.
And a central control unit CPU for controlling the driving of each motor.

Next, the structure of the lifting drive means for tilting the plane tables 4a and 4b will be described with reference to FIGS.

A knife mounting groove 6 is formed in the rotary table 3, and base frames 30 a, 3 are provided on a base 37 of the knife mounting groove 6.
0b is mounted, and the plane tables 4a, 4b are further mounted on the upper part. Also, the before and after part of the rotary table 3 is mounted condensate planer blade for lifting motor M ₃ or往鉋blade for lifting motor M ₄ is by positioning the drive shaft upward. A pinion 31 is fixed to the drive shaft via a torque limiter 32 for protecting the drive shaft from overload.

On the other hand, on the lower surfaces of the outer edges of the base frames 30a, 30b, as shown in FIGS. 6 and 7, an inclined guide surface 34 is formed along the width direction. A wedge-shaped movable support piece 35 supported by a base 37 is provided directly below the inclined guide surface 34. An inclined support surface 36 is formed on the upper surface of the movable support piece 35 at the same angle as the inclined guide surface 34.
Further, a rack 38 is formed on the side surface of the movable support piece 35, and the above-described pinion 31 is engaged with the rack 38 as shown in FIGS.

[0023] Thus, the recovery planer blade for lifting motor M ₃ or往鉋blade for lifting motor M ₄ is driven, the movable support piece 35 by the feed operation of the rack 38 moves on the base portion 37, the movable support piece The base frames 30a, 30b and the plane bases 4a, 4b supported by contacting the inclined guide surface 34 with the inclined support surface 36 due to the guide action of the inclined support surface 36 at 35 have one ends due to their height deviation. It will be moved up and down. By this operation, the plane tables 4a and 4b are tilted with the other inner end supported by the base portion 37 as a fulcrum.
When tilting upward, the tips of the plane blades 5a, 5b are
a, 2b, and the tip of the plane blades 5a, 5b is retracted downward from the material feeding guide surfaces 2a, 2b when tilted downward. Here, FIG. 5 shows a case where the plane tables 4a and 4b are both in the upwardly inclined position. In this upwardly tilted position, the upper surface is substantially flush with the material feeding guide surface 2a, and only the leading ends of the forward plane blade 5a and the return plane blade 5b protrude. The upper limit position is such that the stopper 39 formed on the lower edge of the side wall of the blade mounting groove 6 of the rotary table 3 is attached to the base frame 30a,
30b is defined by abutting against the edge, and its upward tilting is impossible.

The up and down movement (up and down tilting) of the plane tables 4a and 4b is set by defining the amount of movement of the movable support piece 35. The amount of elevation generated at the ends of the plane tables 4a and 4b is about 2 mm.

The movable support piece 35 has a movement control mechanism shown in FIGS. 7 to 9 according to the main part of the present invention in order to prevent the inertial running.

Here, in the downward tilt of the plane tables 4a and 4b, the downward stop position is defined by the rack end e of the rack 38. That is, when the pinion 31 is disengaged from the rack end e, the driving force of the lifting / lowering motors M ₃ and M ₄ does not act on the movable support pieces.
The lowering stop position of 4b is defined. In addition, the drive stop control of the lift motors M ₃ and M _{4 during} the downward tilt is performed by the above-described timer T ₂ . This is the timer T ₂ times the pinion 31 is disengaged to ensure the rack end e is set in advance. This timer T ₂ are also used to control the inversion driving timing of the workpiece. And Thus, the rack end e of the rack 38, the timer T _2, the first stop timing mechanism according to the present invention is constituted.

A plate-like detected portion 40 for stopping the stop is fixed to the end face of the movable support piece 35, and its detection end is protruded to the side. On the side of the traveling path of the movable support piece 35, a detector S composed of a proximity switch or the like for detecting the detected portion 40 for ascending or stopping is fixed to the material feeding table 2 via a mounting piece 41. This detector S detects when the movable support piece 35 has moved in the direction of raising the plane tables 4a, 4b in the direction of the arrow y in FIG. The drive of the lift motors M ₃ and M ₄ is stopped. That is, the rising stop detected part 40 and the detector S
Together, they constitute the second stop timing mechanism according to the present invention. In addition, as the second stop timing mechanism, the lift stop position of the plane table is defined by the other end of the rack, and the lift motor is controlled to stop after the pinion comes off from the other end of the rack. good. That is, the same configuration as the first stop timing mechanism can be applied.

Further, at both ends of the movable support piece 35, springs 42a, 42b (one end is fixed to the material feeding table 2 and the other end is arranged to face the end surface of the movable support piece 35). (Elastic body) is provided. The springs 42a and 42b are connected to the plane table 4 of the movable support piece 35.
a, 4b at the descent stop position and the descent stop position,
Each is elastically contacted with the end of the movable support piece 35, and by the reaction force,
This prevents excessive running.

Here, the plane supports 4a and 4b are mounted on the movable support piece 35 from above via an inclined support surface 36, and the load is applied to the movable support piece 3 by the inclined guide surface 36.
5, the plane table 4a, 4b acts as a component force along the moving direction x (see FIG. 7) on the side of the lowering. Therefore, the lifting motor M is driven to move the movable support piece 35,
Even if the lift motors M ₃ and M ₄ stop driving after the plane tables 4 a and 4 b move in the lowering direction, the inertia force acts largely due to the component force, and the motor attempts to move forward excessively. However, as described above, when the pinion 31 comes off from the rack end e, the movable support piece 35 does not transmit the running force from the pinion 31 of the lifting / lowering motors M ₃ and M ₄ , and further, the pinion 31 is moved from the rack end e. The spring 4
2a is compressed, and as a reaction force, a force for pushing back the movable support piece 35 acts. Therefore, the rack end e
At the same time, the movable support piece 35 stops, and the elastic force of the spring 42a causes the pinion 31 to move.
Is held at a position where it comes into contact with the rack end e. Thus, when the influence of the inertia force is prevented, excessive running is prevented, and when the pinion 31 rotates counterclockwise next time,
The pinion 31 surely meshes with the rack 38.

On the other hand, in order to raise the plane tables 4a, 4b, the lifting / lowering motors M ₃ , M ₄ are driven in the reverse direction to move the movable support piece 35 in the direction of the arrow y in FIG. The inertia force acts, whereby the base frames 30a, 30b supporting the plane tables 4a, 4b are
Since the uppermost position is specified, the movable support piece 35 may stop as a wedge between the inclined guide surface 34 and the upper surface of the base 37 due to an inertial force. In this case, the detachment is not easy and the recovery becomes troublesome. However, as described above, at the position where the detector S has detected the edge of the detected portion 40 for ascending and stopping, since the reaction force of the spring 42b is largely acting on the end surface of the movable support piece 35, the inertia force is reduced. As a result, the movable support piece 35 stops at the same time that the detector S has detected the ascending stop detected portion 40. For this reason, the detector S and the ascending stop detected portion 40
Therefore, the stop is reliably performed, so that no detection error occurs, and the ascent / stop position of the plane tables 4a and 4b is reliably defined. The movement control of these movable support pieces 35 is also performed by the above-described central control unit CPU connected to each detector S and the lifting / lowering motors M ₃ and M ₄ , similarly to the reciprocating operation control of the workpiece.

Next, the operation of the reciprocating cutting type superfinishing plane machine for woodworking having the above-described configuration will be described. First, the processing material is sent to the table 2
Supply on top. In this case, the plate thickness of the workpiece is thick, the tip is tilted receiving plate 22, pushes up the lift operating piece 20, the detection switch LS ₄ is turned on actuation. And thereby drives the Okuzai lifting motor M _2, a reversible Okuzai 7
There rises, causing off return detection switch LS ₄ accordingly. Then, a timer (not shown) is activated, and stops rising several seconds (predetermined value) after the return from the OFF state. This series of operations is for widening the material feeding path with respect to the thickness of the work material before performing the positioning operation of the next reversible material feeding device 7, and the stop time can be surely detected. LS
_It is set to secure the off position of ₄ .
Therefore, Okuzai passage from the beginning is the case wider than the thickness of the workpiece (when the detection by the supply of the workpiece switch LS ₄ is not turned on operation), such operation is omitted.

[0032] After the tentative position of the reversible Okuzai device 7 is set in this way, or thin plate thickness of the workpiece, when the detection switch LS ₄ is not turned on actuation, to further charged workpiece. Thus, the operating piece 26 is pressed against the lower side of Okuzai guide surface 2a, resulting in on-operation of the detection switch LS _3. Then, by the ON operation of the detection switch LS _3, since in order to eliminate the influence of the inertia accompanying the lowering of the reversible Okuzai device 7, is temporarily excessively lowered reversible Okuzai device 7,
It is raised again to perform positioning.

Thereafter, when the positioning of the reversible material feeding device 7 is completed, the normal feeding drive of the reversible material feeding device 7 is started, and the workpiece is fed forward. In this case, by feeding the previous workpiece, detection switch LS ₁ is turned actuated and further off return with the rear passage of the workpiece, the timer T ₁ is activated. At this time, the forward plane blade 5a has a leading end projecting from the material feeding guide surface 2a,
The leading end of b is located at a position retracted downward from the material feeding guide surface 2b. Thus, in the outward stroke, the workpiece is cut by the outward plane blade 5a (the reverse position in FIG. 6). The setting time period of the timer T ₁ of the above with to digest, reversible Okuzai motor M ₁ is driven stop.

Further, the cutting edge is changed in accordance with the time limit set by the timer T ₁ . That is, the lifting motor M ₃ and a positive drive, the movable support piece 35 of鉋台4b is traveling in the direction of FIG. 7 taken along line y, driving stopped when raised stop portion to be detected 40 is detected by the detectors S Then, as shown in FIG.
The tip of the replane blade 5b protrudes from the material guide surface 2b. Similarly, the lifting motor M ₄ is driven in reverse, and the movable support piece 3 of the plane table 4a is moved.
5 drives in the direction of arrow x in FIG. And pinion 3
1 is disengaged from rack end e of the rack 38, after lowering is stopped, elevating motor M ₄ by timed digestion of the timer T ₂ is driven down, determined position to the lowered position. At this time, the blade of the pinion 31 is positioned at a position where the blade edge of the pinion 31 abuts on the rack end e of the rack 38 by the urging force of the spring 42a. Thereby, the tip of the outgoing plane blade 5a retreats downward from the material feeding guide surface 2a.

[0035] After such conversion, the reversible Okuzai motor M ₁ starts driving backhaul. The detection switch LS ₂ which had already turned operate with the feed before the workpiece is turned off return,
By this return to the off state, the timer T ₁ (a timer separate from the timer T ₁ may be used) is operated, the lower surface of the workpiece is cut by the replane blade 5b, and the rear end passes over the replane blade 5b. after setting timed the timer T ₁ is digested. And after this, reversible Okuzai motor M ₁ is driven stop.

As the timer T ₁ expires, the elevating motors M ₃ and M ₄ are driven again, and the plane tables 4 a and 4
b tilt in opposite directions, the leading end of the forward plane blade 5a protrudes from the material feeding guide surface 2a, and the return plane blade 5b retreats downward, returns to the reverse position of FIG. ₁ starts normal feed driving, and the forward stroke is started again. This operation is the same as described above, and the description is omitted. Then, with the timed digestion of the above timer T _2, backward stroke starts.

In this way, the work material reciprocates and the forward plane blade 5a and the return plane blade 5b are sequentially cut. In this process, when the thickness of the work material is reduced by reciprocating cutting,
Since feed material pressure decreases, with the digestion achieve a predetermined cutting amount, and driving Okuzai lifting motor M _2, a reversible Okuzai device 7 so that the predetermined amount downward. This lowering control is performed based on the signal output of the encoder E described above.

When the predetermined number of cuts has been exhausted, the front end (rear end of the processed material) of the processed material in the feed direction is detected by the detection switch LS.
₃ is turned on activating the, and with the workpiece passing, it is turned off returns, stops driving of the reversible Okuzai motor M _1, further
The leading end of the forward plane blade 5a protrudes from the material feeding guide surface 2a, and the return plane blade 5b retreats downward, and after the next preparation, the cutting of the workpiece is completed.

In the above-described embodiment, the ends of the plane tables 4a and 4b may be directly moved up and down by the movable support pieces 35 without the base frames 30a and 30b.

[0040] Figure 10 shows another configuration of the present invention, the running stop control of the movable support piece 35, the rising stop detected portions 50 provided to the movable support piece 35, detectors S ₅ and raising lowering is detected by use detectors S _6, it is obtained so as to set by defining the amount of movement

Even in this case, the movable support piece 35
, Springs 42a and 42b are respectively provided. And, thereby, lowering the detector S ₅ detects the rising stop the detection unit 40 at the same time lifting motor M _3,
With M ₄ is driven down, the spring 42 on the end face
The biasing force a acts, so that the vehicle does not run excessively due to the inertial force, and the movable support piece 35 stops steeply. Therefore, at this stop position, the descending detector S
₅ is opposed to the stop detection target 50. Similarly, the lifting motor M _3, M ₄ is driven simultaneously stopped and the stop detected portions 50 are detected by an increase for detectors S _6,
The stop position is held by the spring 42b. For this reason, even in this configuration, the spring 4
By 2a and 42b, excessive running of the movable support piece 35 is prevented, and the elevation control of the plane tables 4a and 4b can be properly performed.

In the above-described embodiment, the two plane tables 4a and 4b are used.
Although the present invention is applied to a reciprocating cutting type super finishing plane machine for woodworking provided with the above, the present invention is also applied to a super finishing plane machine for woodworking having a single plane stand.

[0043]

According to the present invention, a rack is formed on a side surface of a movable support piece, and a pinion linked to a drive shaft of a lifting motor is engaged with the rack. In addition to defining the descent stop position of the plane table, the lowering control of the elevating motor is performed after the pinion comes off the end of the rack, and the movable support piece is elastic in the moving direction in which the plane table is lowered. As a result, the movable support piece stops moving at the same time as the pinion comes off the end of the rack, and the descent stop position is defined. For this reason, excessive running due to the inertia of the movable support piece is prevented, and the up / down tilting of the plane table is optimally performed.

Further, the apparatus further comprises a stop timing mechanism for stopping and controlling the elevating motor when the stop detecting portion provided on the movable supporting piece is detected by the ascending detector and the descending detector, respectively. Even in the configuration in which the piece has an elastic body that generates a reaction force in the moving direction in which the plane table descends, the elastic body prevents excessive running due to inertial force.

Further, in the above configuration, when the movable support piece is provided with an elastic body that generates a reaction force also in the moving direction in which the plane table rises,
Even in the ascending direction of the plane table, excessive running of the movable support piece can be prevented, and smoother vertical movement of the plane table can be guaranteed.

[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.

FIG. 5 is a vertical sectional side view of the turntable 3;

FIG. 6 is a vertical sectional side view conceptually showing a lifting drive means.

FIG. 7 is a plan view showing a drive control mechanism of the movable support piece 35.

FIG. 8 is a side view showing a drive control mechanism of the movable support piece 35.

FIG. 9 is a sectional view of FIG. 7A-A.

FIG. 10 is a side view conceptually showing another configuration.

[Explanation of symbols]

Reference Signs List 2 material feeding table 3 rotary table 4a, 4b plane table 5a forward plane blade 5b replane plane blade 6 blade mounting groove 7 reversible material feeding device 30a, 30b base frame 31 pinion 34 inclined guide surface 35 movable support piece 36 inclined support surface 37 part 38 racks 42a, 42b spring LS ₁ ~LS ₄ detection switches M _3, M ₄ lift motor S, S _5, S ₆ detectors

Claims (4)

[Claims] 1. A plane table having a plane mounted with a plane blade for projecting a cutting edge onto a material guide surface is housed in a blade mounting groove provided on a material table opposite to a material feeding apparatus so as to be tiltable. Or, a movable support piece having an inclined guide surface formed along the width direction on a lower surface of an outer edge of a base frame for supporting the same, and an inclined support surface having an equal angle with the inclined guide surface at a position directly below the inclined guide surface. Each of them is interposed, each edge of the plane table is supported on the inclined support surface, and a rack is formed on the side of the movable support piece, and the rack is engaged with a pinion connected to the drive shaft of the lifting motor, In the super finishing plane for woodworking, which moves the movable support piece along the inclined support surface by driving the motor to tilt the plane table with the inside edge as a fulcrum, the descent stop position of the plane table by the end of one side rack And the pinion moves from the end of the rack A first stop timing mechanism configured to control the descending stop control of the elevating motor after being disengaged, and a second stop timing mechanism configured to control the elevating motor to ascend and stop when the predetermined elevating stop position of the plane table is reached, A reciprocating cutting woodworking super-finishing plane machine comprising an elastic body that generates a reaction force in a moving direction of a movable support piece in which a plane table moves down. 2. The timer according to claim 1, wherein the first stop timing mechanism is provided with a timer for defining a stop position of the plane table by one end of the rack and for time-consuming after the pinion comes off the end of the rack. 2. A reciprocating cutting type superfinishing planner for woodworking according to claim 1, wherein the lifting / lowering motor is controlled to stop descending in synchronism with the above. 3. A plane table having a plane mounted with a plane blade for projecting a cutting edge onto a material guiding surface is housed in a blade mounting groove disposed on a material table opposite to the material feeding apparatus so as to be tiltable. Alternatively, a movable support piece having an inclined guide surface formed along the width direction on the lower surface of the outer edge of the base 1 that supports the base, and a tilt support surface having an angle equal to the inclined guide surface at a position directly below the inclined guide surface. Each of them is interposed, each edge of the plane table is supported on the inclined support surface, and a rack is formed on the side of the movable support piece, and the rack is engaged with a pinion connected to the drive shaft of the lifting motor, In a woodworking super-finishing plane machine for tilting a plane table with an inner edge as a fulcrum by moving a movable support piece along an inclined support surface by driving a motor, a detected stop part provided on the movable support piece. Are detected by the ascending and descending detectors, respectively. Woodworking characterized by comprising a stop timing mechanism for stopping and controlling the elevating motor at the point of time, and having an elastic body that generates a reaction force in the moving direction of the movable support piece, in which the plane table descends. For super finishing plane machine. 4. A superstructure for woodworking according to claim 1, further comprising an elastic body which generates a reaction force in a moving direction of said movable support piece in which the plane table rises. Finishing plane machine.