JP3161880U - Chamfering machine - Google Patents

Abstract

Provided is a chamfering machine capable of moving the position of a cutting blade up and down to easily adjust a chamfering amount, reducing a cutting resistance during chamfering, and obtaining a good finished surface. A base, a bracket movable up and down relative to the base, a position adjusting mechanism for operating the bracket up and down, a drive unit installed on the bracket and having an output shaft in a vertical direction, A cutter 13 installed on the output shaft projecting upward from the bracket and a bent portion having a substantially V-shaped cross section are positioned vertically downward of the cutter, and the workpiece is cut. A guide plate 4 having a substantially V-shaped cross-section that is installed on the base body with a slight inclination with respect to the direction, and a cutting edge is disposed so as to be orthogonal to the output shaft, and exposed from the notch. A chamfering machine comprising: a cutting blade installed on the cutter in a state of being eccentric from the output shaft. [Selection] Figure 4

Description

  The present invention relates to a chamfering machine, and particularly to a chamfering machine that can easily adjust the amount of chamfering.

  2. Description of the Related Art Conventionally, a chamfering machine that adjusts a chamfering amount by adjusting a protruding amount of a cutting blade is known. The chamfering machine employs a structure that employs a position adjusting mechanism to move a guide plate on which a workpiece is placed up and down. However, in this structure, when the weight of the workpiece is large, the guide plate cannot be easily moved up and down.

  In the chamfering machine, the cutting blade is leveled on the output shaft of the drive unit protruding at an angle of 45 degrees and fixed to the cutter. However, since the cutting blade rotates in an inclined state with respect to the processing straight line of the workpiece, there is a concern that the cutting resistance during chamfering may increase. Furthermore, since the cutting trace of the cutting blade remains in the direction perpendicular to the cutting direction on the surface to be processed, there is a concern that a good finished surface cannot be obtained (for example, see Patent Document 1).

Utility Model Registration No. 3051125

  Therefore, the present invention solves such problems, and the position of the cutting blade can be moved up and down to easily adjust the chamfering amount, and the cutting resistance at the time of chamfering can be reduced to provide a good finished surface. It is an object to provide a chamfering machine obtained.

  In order to solve the above problems, a chamfering machine according to claim 1 of the present invention includes a base, a bracket movable up and down with respect to the base, and position adjustment for operating the bracket up and down. A mechanism, a drive unit installed on the bracket and having an output shaft in the vertical direction, a cutter installed on the output shaft projecting upward from the bracket, and positioned vertically above the cutter and having a cross section of approximately V A guide plate having a substantially V-shaped cross-section having a notch, which is installed on the base body in a state where a letter-shaped bent portion is positioned vertically downward and is slightly inclined with respect to the cutting direction of the workpiece, and the output shaft And a cutting blade installed on the cutter in a state of being eccentric from the output shaft so as to be exposed from the notch.

  The chamfering machine according to claim 2 of the present invention is the chamfering machine according to claim 1, wherein the position adjusting mechanism includes an adjusting knob having a spiral groove, and the adjusting knob. And a support pin that pivotally supports the base, and a connecting pin that is slidably inserted into the groove portion at one end and fixed to the bracket at the other end.

  The chamfering machine according to claim 3 of the present invention is the chamfering machine according to claim 1 or 2, wherein the chamfering machine is configured to cover the drive unit and the bracket; A chip discharge port formed downward from the upper end of the housing, a cover installed on the housing so as to cover the periphery of the cutter and the discharge port, and the exterior of the housing from the discharge port And a chute that projects to the outside.

  A chamfering machine according to a fourth aspect of the present invention is the chamfering machine according to any one of the first to third aspects, wherein the lock for fixing the vertically movable position of the position adjusting mechanism is provided. It has a part.

  In the chamfering machine according to claim 1 and claim 2 of the present invention, the position adjustment mechanism can directly move the cutter up and down regardless of the weight of the workpiece placed on the guide plate. The chamfering amount can be easily adjusted.

  Moreover, since it cuts with the blade edge | tip arrange | positioned so that it may orthogonally cross with the output shaft of a drive part with respect to the to-be-cut surface in a to-be-processed object, it can chamfer by what is called face-cutting. As a result, cutting is performed such that the cutting edge that rotates with respect to the workpiece cuts out in a tangential direction while drawing an arc, so that cutting resistance can be reduced during chamfering.

  Furthermore, since the cutting is performed with the cutting edge coming into contact with the cutting direction obliquely with respect to the cutting direction, a good finished surface can be formed. Thereby, although the burr | flash in cutting will arise in a cutting direction, the burr | flash produced in the orthogonal | vertical direction with respect to a cutting direction can be reduced. The burr generated in the cutting direction can be removed by continuously cutting in the cutting direction.

  In the chamfering machine according to claim 3 of the present invention, in the chamfering machine according to claim 1 or 2, the chips of the workpiece are discharged outside the casing without being scattered around. be able to.

  In the chamfering machine according to claim 4 of the present invention, in the chamfering machine according to any one of claims 1 to 3, the vertically movable position of the position adjusting mechanism is fixed by the lock portion. It is possible to prevent the amount of chamfering from fluctuating due to vibration during chamfering.

It is a front perspective view of the chamfering machine in the Example of this invention. It is a back perspective view of the chamfering machine in the Example of this invention. It is a front view of the chamfering machine in the Example of this invention. It is a right view of the chamfering machine in the Example of this invention. It is a partially omitted state perspective view which decomposed | disassembled the components inside the chamfering machine in the Example of this invention. It is a back perspective view showing the inside of a chamfering machine in the example of the present invention. It is a left view showing the inside of the chamfering machine in the Example of this invention. It is a front perspective view of the chamfering machine of the other Example in the Example of this invention.

  Hereinafter, the chamfering machine 1 in embodiment of this invention is demonstrated based on drawing.

  A chamfering machine 1 according to an embodiment of the present invention will be described with reference to FIGS. The chamfering machine 1 includes a bottom 2, a base 3, a guide plate 4, a housing 5, a drive unit 12, a cutter 13, and a position adjusting mechanism.

  The chamfering machine 1 is provided with a guide plate 4 having a substantially V-shaped cross section on which a workpiece is placed. The side surface of the chamfering machine 1 is covered with a housing 5 that protects internal components such as the drive unit 12. The casing 5 is provided with an operation switch 6 and a chute 21 for discharging chips. A bottom 2 is installed below the chamfering machine 1, and a base 3 is installed on the bottom 2. One side surface of the base 3 is exposed from the housing 5, and an adjustment knob 7 for a position adjustment mechanism is installed on the side surface.

  The substantially square bottom 2 is located below the chamfering machine 1 and constitutes the bottom of the chamfering machine 1. A cap 2 a that prevents slipping is provided at a corner of the bottom 2. As shown in FIGS. 6 and 7, for example, a base 3 having a substantially L-shaped cross section is installed on the bottom 2.

  The base body 3 is provided with a position adjusting mechanism for moving the cutter 13 installed inside the housing 5 up and down. The position adjustment mechanism includes an adjustment knob 7, a bracket, a column 14, a support pin 17, and a connection pin 18.

  The adjustment knob 7 is a member for operating the cutter 13 to move up and down. The adjustment knob 7 is provided on one side surface of the base body 3 exposed from the housing 5 and in the central portion in the vertical direction. The adjustment knob 7 can be rotated by a support pin 17 that pivotally supports the base 3 in the horizontal direction. As shown in FIG. 5, a spiral groove 7 a is formed on one end face of the adjustment knob 7 facing the base 3 from the substantially center toward the radial direction.

  The connecting pin 18 is a member that converts the circular motion of the adjusting knob 7 into a linear motion in the vertical direction together with the groove portion 7a. As shown in FIGS. 5 to 7, the connecting pin 18 is inserted in the horizontal direction into the long hole 3 a formed in the base body 3, and is movable within the range of the long hole 3 a. One end of the connecting pin 18 is slidably inserted into the groove 7a of the adjustment knob 7, and the other end is fixed to a second bracket 16 described later.

  The bracket is a member that holds the drive unit 12, and is a member that can be moved up and down by the circular motion of the adjustment knob 7. The bracket is formed in, for example, an inverted L-shaped cross section, and includes a first bracket 11 and a second bracket 16. The drive unit 12 and the holding unit 15 are fixed to the first bracket 11. The drive unit 12 is fixed in a state where the output shaft 12 a is positioned vertically upward and the output shaft 12 a protrudes from the upper end surface of the first bracket 11.

  The two holding portions 15 are members that guide the support column 14. The two struts 14 are fixed in the vertical direction via a holding portion 15 installed on the first bracket 11. The upper end of the column 14 is inserted into the through hole of the fixing portion 9 fixed to the base 3. On the other hand, the lower end of the column 14 is fixed to the lower end surface of the base body 3 bent in a substantially L shape.

  The other end of the connecting pin 18 is fixed to the second bracket 16. Accordingly, the first bracket 11 and the second bracket 16 can be moved up and down with respect to the support column 14 via the holding portion 15. The first bracket 11 and the second bracket 16 may be formed from one integrated bracket.

  A lock portion 8 is installed on the base 3 near the adjustment knob 7. The lock portion 8 is a member that fixes the movable position in the vertical direction of the position adjustment mechanism. The lock portion 8 is inserted in the horizontal direction through the long hole 3b formed in the base 3, and is movable within the range of the long hole 3b. One end portion of the lock portion 8 protrudes toward the adjustment knob 7, and a knob for facilitating rotation is installed at the tip portion. The other end of the lock is screwed into the second bracket 16.

  As shown in FIG. 7, the cutter 13 is installed on the output shaft 12 a of the drive unit 12. The cutter 13 includes a base portion 13a and one or a plurality of cutting blades 13b. The cutting blade 13b is detachably installed on the base portion 13a. The cutting blade 13b has a shape in which a substantially isosceles triangle is cut out from a substantially rhombus corner, the cut-out straight line portion is a wiper blade 13c, and the four sides of the rhombus are shoulder blades 13d.

  The wiper blade 13c for cutting the workpiece protrudes from the upper end surface of the base portion 13a, and the cutting blade 13b is arranged so that the vertical direction of the output shaft 12a and the wiper blade 13c are orthogonal to each other. Installed. The cutting blade 13b is installed with a predetermined dimension A eccentric from the output shaft 12a.

  In addition, a control unit 23 for safely operating the drive unit 12 is installed on the base 3 via the mounting unit 22. As shown in FIG. 1 to FIG. 4, the housing 5 has internal parts such as the upper end surface of the first bracket 11 and the drive unit 12 in a state where the side surface of the base 3 on which the adjustment knob 7 is installed is exposed. Installed to cover.

  As shown in FIGS. 1 and 4, the connecting portion 10 located above the chamfering machine 1 is installed on the base 3 in a state of being placed on the fixing portion 9. A guide plate 4 is installed in the connecting portion 10. The guide plate 4 is fixed with a substantially V-shaped bent portion positioned vertically downward in a state where the guide plate 4 is slightly inclined with respect to the cutting direction of the workpiece. A cutout that exposes the cutter 13 is formed in the bent portion.

  As shown in FIGS. 2 and 4, a discharge port 5 a for discharging chips is formed on the upper end surface of the housing 5. The discharge port 5a is provided along the side surface of the housing 5 and vertically downward. The discharge port 5 a is provided on the side opposite to the base 3 via the guide plate 4.

  The cover 19 is formed so that one end portion surrounds the periphery of the cutter 13 and the other end portion surrounds the periphery of the discharge port 5 a, and is detachably installed on the housing 5 via the fixing member 20. Thereby, the chips of the workpiece are conveyed to the discharge port 5a without being scattered around.

  A chute 21 for discharging chips to the outside of the housing 5 is installed below the discharge port 5a. The chute 21 is provided so as to protrude from the inside of the discharge port 5 a in the housing 5 to the outside of the housing 5. An operation switch 6 for operating the drive unit 12 is installed on the side surface of the housing 5.

  The chamfering amount of the chamfering machine 1 configured as described above is adjusted as follows. When the adjustment knob 7 of the position adjustment mechanism is rotated, the connecting pin 18 moves along the spiral groove 7a. Thereby, circular motion is converted into linear motion, and the connecting pin 18 moves within the range of the long hole 3a of the base 3a. As a result, the position of the bracket fixed to the connecting pin 18 and the cutter 13 installed on the drive unit 12 is displaced up and down as indicated by an arrow B shown in FIG. 7, and the amount of chamfering can be adjusted.

  Further, at the time of chamfering, the cutter 13 is rotated with a minute inclination angle of the guide plate 4 with respect to the workpiece, so that only the wiper blade 13c in the cutting blade 13b rotating forward with respect to the cutting direction is used. It will cut with. Thereby, since it does not cut with the wiper blade 13c rotating on the rear side, the same surface is not cut twice and a good finished surface can be obtained.

  As described above, according to the chamfering machine 1 according to the present invention described above, a mechanism for directly moving the position of the cutter 13 up and down is employed, so that it is easy to perform regardless of the weight of the workpiece placed on the guide plate 4. The chamfering amount can be adjusted.

  Further, since the cutting is performed with the wiper blade 13c arranged so as to be orthogonal to the output shaft 12a of the drive unit 12 installed in the vertical direction with respect to the work surface of the work piece, the chamfering can be performed by so-called face grinding. it can. As a result, the cutting is performed such that the wiper blade 13c rotating with respect to the workpiece cuts in a tangential direction while drawing an arc, so that the cutting resistance can be reduced during chamfering.

  Furthermore, since the cutting resistance at the time of chamfering can be reduced, vibration transmitted to the operator can be reduced, and the drive unit 12 can be made to have a low horsepower.

  In addition, since the wiper blade 13c is in contact with the workpiece from an oblique direction with respect to the cutting direction to perform cutting, a good finished surface can be formed. Thereby, although the burr | flash in cutting will arise in a cutting direction, the burr | flash produced in the orthogonal | vertical direction with respect to a cutting direction can be reduced. The burr generated in the cutting direction can be removed by continuously cutting in the cutting direction.

  Apart from the guide plate 4 of the chamfering machine 1 in the above embodiment, as shown in FIG. 8, a chamfering machine 1a provided with a movable guide plate 24 may be used. The movable guide plate 24 can move only the guide plate using a slide rail (not shown) while being installed on the base 3. By adopting the movable guide plate 24, as shown by the arrow C, the movable guide plate 24 can be moved in a state where the workpiece is placed, which is suitable for chamfering a heavy workpiece. It can be.

DESCRIPTION OF SYMBOLS 1, 1a Chamfering machine 2 Bottom part 2a Cap 3 Base | substrate 3a Long hole 4 Guide plate 5 Case 5a Outlet 6 Operation switch 7 Adjustment knob 7a Groove part 8 Lock part 9 Fixing part 10 Connection part 11 1st bracket 12 Drive part 12a Output shaft 13 Cutter 13a Base portion 13b Cutting blade 13c Wiper blade 13d Shoulder blade 14 Strut 15 Holding portion 16 Second bracket 17 Support pin 18 Connecting pin 19 Cover 20 Fixing member 21 Chute 22 Mounting portion 23 Control portion 24 Movable guide plate

Claims (4)

A substrate;
A bracket movable up and down with respect to the base;
A position adjustment mechanism for operating the bracket vertically movable;
A drive unit installed on the bracket and having an output shaft in a vertical direction;
A cutter installed on the output shaft protruding upward from the bracket;
The cutter is positioned on the substrate in a vertically upward direction, and a bent portion having a substantially V-shaped cross section is positioned in a vertically downward direction and is slightly inclined with respect to the cutting direction of the workpiece. A guide plate having a substantially V-shaped cross section,
A cutting blade that is disposed on the cutter in a state of being arranged eccentric from the output shaft so as to be exposed from the notch while arranging the cutting edge so as to be orthogonal to the output shaft,
A chamfering machine characterized by comprising: The position adjusting mechanism is
An adjustment knob having a spiral groove;
A support pin that pivotally supports the adjustment knob on the base body;
One end is slidably inserted into the groove, and the other end is fixed to the bracket;
A chamfering machine according to claim 1, comprising: A housing installed to cover the drive unit and the bracket;
Chip discharge port formed downward from the upper end of the housing,
A cover installed on the casing so as to cover the periphery of the cutter and the discharge port;
A chute protruding from the outlet to the outside of the housing;
A chamfering machine according to claim 1 or 2, comprising:   The chamfering machine according to any one of claims 1 to 3, further comprising a lock portion that fixes a vertically movable position of the position adjusting mechanism.

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