WO2013013607A1

WO2013013607A1 - Cutting machine

Info

Publication number: WO2013013607A1
Application number: PCT/CN2012/079035
Authority: WO
Inventors: 索默•哈利; 布朗•沃伦; 格哈德•格雷厄姆
Original assignee: 苏州宝时得电动工具有限公司
Priority date: 2011-07-22
Filing date: 2012-07-23
Publication date: 2013-01-31
Also published as: CN102886566A; CN102886566B; TWM446669U

Abstract

Disclosed is a cutting machine (300), comprising a base (30), a worktable (32), a supporting holder (34) and a cutting unit (36) connected to the supporting holder, wherein the worktable has a first working face (50) for supporting a workpiece; on the base is provided a protection fence (46) which has an abutment face (48) abutting against a work-piece, and the abutment face and the first working face form a first working area (53) for a chamfered-cutting mode; on the base is provided a second working face (58) for supporting the work-piece, and the cutting machine has a second working area (61) formed between the second working face and the worktable for a flat-cutting mode. The second working area is provided between the second working face of the base and the worktable, so that the whole cutting machine has a simple and compact structure.

Description

Cutting machine

The present invention relates to a cutting machine, and more particularly to a cutting machine having two modes of operation. Background technique

As a cutting tool, the traditional cutting machine has a wide range of applications and can be used to cut many metal or non-metal materials, making cutting fast and convenient. A conventional cutting machine generally includes a work table, a cutting unit having a motor and a saw blade located above the work table, and a guard rail disposed on the work table for positioning the workpiece, wherein the work table has a table support surface for supporting the workpiece and is disposed on A longitudinally extending cutting groove on the table, the saw blade can at least partially extend into the cutting groove, and the cutting unit is rotatably coupled to the table around a pivot shaft fixed to the table for cutting the workpiece. However, in the conventional cutting machine, the size of the workpiece to be cut is limited due to the position of the table and the blade. Therefore, it is only necessary to use a cutting tool such as a table saw for a workpiece having a large size.

To this end, the industry's technicians have made some improvements, such as the emergence of a cutting machine with two operating modes on the market, that is, the cutting machine has a table cutting mode and a chamfering mode. The cutting machine comprises a base, a lower table pivotally disposed on the base, a cutting unit disposed on the lower table by pivoting, wherein the cutting unit comprises a fixed cover and a movable cover movably connected with respect to the fixed cover , the saw blade and the motor that drives the saw blade to rotate. In addition, the upper guard is provided with an upper table for supporting the workpiece. In the table-cut mode, the workpiece is placed on the upper table for table cutting; in the chamfer mode, the workpiece is placed on the lower table for beveling. Since the cutter needs to be additionally provided with a workbench in the fixed shield, since the workbench requires a fixed shield support, the size of the workbench is limited, and the support is not stable enough. Additional auxiliary support is required for situations where longer workpieces need to be machined. It is also necessary to set the necessary operating elements on the fixed cover under the workbench, such as the switch in the console cut mode and the necessary operating handle in the bevel mode, so the whole machine structure is complicated and not compact, and the workpiece is cut. The height will also be limited.

Summary of the invention

The technical problem to be solved by the present invention is to provide a cutting machine having a simple cutting mode and a beveling mode.

The technical solution adopted by the present invention to solve the above technical problem: a cutting machine, comprising: a base; a work table supported on the base, the work table having a first work surface supporting the workpiece; a support frame coupled to the work table; a cutting unit rotatably coupled to the support frame, the cutting unit including a fixed shroud rotatably coupled to the support frame, a motor housing coupled to the fixed shroud, a saw blade, and a motor housed in the motor housing that drives the saw blade to rotate about the first axis; a guardrail attached to the base The guard rail has an abutting surface against the workpiece, the abutting surface and the first working surface form a first working area; the base has a second working surface supporting the workpiece, and the cutting machine has a forming In the second working area between the second working surface and the worktable, the cutting machine has a chamfering mode and a table cutting mode, and in the chamfering mode, the saw blade is at least partially located in the first working area; In the desk cutting mode, the saw blade is at least partially located in the second working area.

Compared with the prior art, the beneficial effects of the invention: the cutting machine has two working areas, which can conveniently realize two cutting modes of the chamfering mode and the table cutting mode; and realize the second working area setting of the table cutting mode The structure of the entire cutting machine is simple and compact between the second working surface of the base and the work table.

Preferably, the cutting machine comprises a table locking release mechanism, and the table locking release mechanism is operable to convert the table cutting mode into a chamfer mode.

Preferably, the table locking release mechanism is disposed between the cutting unit and the table.

Preferably, the undercut lock release mechanism includes an operation button movably disposed on the workbench, a lock member coupled to the operation button, and a fitting member disposed on the cutting unit, wherein the operation button is operable to cause the lock member to The mating member cooperates to cause the cutting machine to be in the table cutting mode; the locking member and the fitting member are disengaged for converting the table cutting mode into the chamfer mode.

Preferably, the engaging member is a card slot disposed on the fixed cover, and the locking member is provided with a hook for clamping the card slot.

Preferably, the operating button is slidably disposed on the table, and a spring is disposed between the operating button and the table, and the spring keeps the operating button at a position facing the table.

Preferably, the table locking release mechanism is disposed between the cutting unit and the support frame.

Preferably, the table locking release mechanism comprises a locking pin disposed on one of the cutting unit and the support frame and a locking hole disposed on the other, the locking pin and the locking hole are matched, and the cutting machine is in the table cutting mode.

Preferably, the mode switching mechanism includes a bevel lock release mechanism, and the bevel lock release The mechanism is operable to convert the bevel mode to the desk cut mode.

Preferably, the bevel lock release mechanism includes a stopper movably disposed on one of the support frame and the cutting unit and a stopper disposed on the other, the stopper and the stopper being disengaged, Used to convert the bevel mode to the desk cut mode.

Preferably, the stopper is a stopper pin movably disposed on the support frame, the stopper is a groove fixedly disposed on the fixed shield, the stopper pin is received in the groove, and the cutting The machine is in chamfer mode.

Preferably, the support frame is further provided with an adjusting screw for engaging with the stopping pin.

Preferably, the stopper is a rotatable rotating block disposed on the support frame, and the stopper is a boss fixedly disposed on the fixed cover, and when the rotating block is engaged with the boss, The cutter is in a chamfer mode and the cutting unit is in a lower limit position.

Preferably, the cutting machine comprises a first switch for controlling the operation of the motor in the bevel mode; a second switch for controlling the operation of the motor in the table cutting mode, the cutting machine further comprising a safety switch, the safety switch having Two states, in the first state, the cutting machine is in a chamfering mode, the safety switch allows the first switch to control the motor and the second switch to control the motor; in the second state, the cutting machine is in the table cutting mode, The safety switch allows the second switch to control the motor to limit the first switch to control the motor.

Preferably, the support frame is provided with a protrusion, and the safety switch has a contact, and the protrusion is selectively engageable with the contact for the safety switch in the first state and the second state. Conversion between.

Preferably, a positioning mechanism is disposed between the cutting unit and the base, and in the undercut mode, the positioning mechanism is used to ensure that the saw blade is perpendicular to the second working surface.

Preferably, the positioning mechanism includes a positioning hole disposed on the motor housing and a positioning pin disposed on the guard rail. When the positioning hole and the positioning pin are engaged, the saw blade is perpendicular to the second working surface. .

Preferably, the cutting machine is further provided with a workpiece pressing mechanism, the workpiece pressing mechanism comprising a pressing plate movably disposed on the working table and a limiting mechanism for restraining the pressing plate at a predetermined position.

Preferably, the pressure plate is rotatably connected to the worktable by a parallel four-bar linkage mechanism, and an elastic member is disposed between the pressure plate and the work table, and the elastic member keeps the pressure plate in the orientation at all times. The position of the second table.

Preferably, the limiting mechanism comprises a limiting member matched with the pressure plate, a driving mechanism and a driving member for driving the limiting member, and a fixing device for fixing the driving member with respect to the working table, wherein the driving member is movable On the workbench, and the driving mechanism drives the limiting member to cooperate with the pressure plate.

Preferably, the driving member is rotatably connected to the work table and is provided with an eccentric pin, and the driving mechanism comprises a first rod connected to the eccentric pin and a second rod pivotally connected to the first rod, A slide bar disposed on the table, wherein the drive member is operable to move the first rod and the second rod to drive the limit member to slide along the slide rod.

Preferably, the limiting member is provided with a limiting surface, and the pressing plate is provided with a limiting block, and the limiting surface cooperates with the limiting block to limit the pressing plate to a predetermined position.

Preferably, the cutting machine further includes an auxiliary guiding attachment, the auxiliary guiding attachment comprising a body that can be placed on the second working surface and a locking mechanism that locks the main body on the base, wherein the main body has a guiding mechanism a guiding surface of the workpiece, and the height of the body is smaller than a minimum distance between the pressing plate and the second working surface.

Preferably, the first and second working faces are located on the same side of the first axis.

Preferably, the first and second working faces are parallel.

Preferably, the distance between the first working surface and the second working surface is smaller than the height of the base. Preferably, the distance between the first working surface and the second working surface is smaller than the radius of the saw blade. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a cutting machine in an embodiment of the present invention.

2 is a partial perspective view of a cutting machine in an embodiment of the present invention.

Figure 3 is a schematic illustration of a cutting machine in accordance with an embodiment of the present invention.

Figure 4 is an exploded perspective view of the bevel lock release mechanism of the cutting machine in the embodiment of the present invention.

Fig. 5 is a cross-sectional view showing the undercut lock release mechanism of the cutting machine in the embodiment of the present invention, in which case the cutting unit is in the locked state.

Figure 6 is a cross-sectional view showing the undercut lock release mechanism of the cutting machine in the embodiment of the present invention, in which case the cutting unit is in an unlocked state.

Fig. 7 is a schematic view showing the undercut locking release mechanism of the cutting machine in the embodiment of the present invention.

Figure 8 is a perspective view of a cutting machine in an embodiment of the present invention.

Figure 9 is a perspective view of the cutting machine in the embodiment of the present invention, in which case the cutting machine is in the table cutting mode Style.

Figure 10 is a circuit schematic diagram of a safety switch of a cutting machine in an embodiment of the present invention.

Figure 11 is a schematic view of the safety switch of the cutting machine in the embodiment of the present invention, in which the safety switch is in the first state.

Figure 12 is a schematic view of the safety switch of the cutting machine in the embodiment of the present invention, in which the safety switch is in the second state.

Figure 13 is a perspective view showing the workpiece pressing mechanism of the cutting machine in the embodiment of the present invention.

Figure 14 is a perspective view of a pressure plate of a cutting machine in an embodiment of the present invention.

Figure 15 is a perspective view showing the driving mechanism of the cutting machine in the embodiment of the present invention.

Figure 16 is a perspective view showing the driving mechanism of the cutting machine in the embodiment of the present invention.

Figure 17 is a perspective view of a cutting machine in an embodiment of the present invention.

Figure 18 is a schematic view of the workpiece pressing mechanism of the cutting machine in the embodiment of the present invention.

Figure 19 is a schematic view of a workpiece pressing mechanism of a cutting machine in an embodiment of the present invention.

Figure 20 is a perspective view of the cutting machine in the embodiment of the present invention, in which the cutting machine is in the table cutting mode.

Figure 21 is a perspective view of the cutting machine in the embodiment of the present invention, in which the cutting machine is in the table cutting mode.

Figure 22 is a schematic view of a cutting machine in an embodiment of the present invention.

Its towel

30. Base 31. Flange 32. Workbench

33. Boss 34. Support frame 35. Fixed shield

36. Cutting unit 37. Motor housing 38. Pivot shaft

39. Saw blade 40. Axis of the pivot shaft 41. Operating handle

42. Tilt locking mechanism 43. Movable shield 44. Base support surface

45. First axis 46. Guardrail 48. Abutment surface

50. First working surface 52. First cutting groove 53. First working area

54. Bevel locking mechanism 56. Locking screw 58. Second working surface

60. Second cutting groove 61. Second working area 62. Bevel locking release mechanism

64. Table locking release mechanism 65. Round hole 66. Stop pin

67. End face 68. Groove 69. End face

70. Adjustment screw 72. Operating button 74. Locking member

76. Mating parts 78. Mounting 80. Pin 82. Card hook 83. Scythe 84. Positioning mechanism

86. Positioning hole 88. Locating pin 89. Adjustment structure

90. First switch 92. Switch box 94. Control panel

96. Second switch 98. Display light 100. Overload protector

102. Safety switch 104. Bump 106. Contact

112. Positioning seat 114. Workpiece pressing mechanism 116. Pressure plate

118. Limiting mechanism 120. Elastic element 122. Connecting rod

124. Slot 126. Contact surface 128. Mountain

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130. The other end 132. Limiting parts 134. Drive mechanism

136. Drive 138. Fixing device 140. Fixing knob

142. Eccentric pin 1 44 . First rod 146. Connecting pin

147. Second rod 148. Slide rod 150. Chute

152. Guide pin 154. Guide groove 156. Connecting rod

158. Limiting surface 160. Limiting block 162. 孑曰 T clothing straight

164. Scale 166. Pointer 168. Main guide attachment

170. Base 172. Locking mechanism 174. Stop face

176. Workpiece pusher 178. Body 180. Pusher

182. Auxiliary guide attachments 184. Main body 186. Locking mechanism

188. Guide surface 300. Cutting machine

detailed description

The invention will now be further described with reference to the drawings and preferred embodiments.

As shown in Fig. 1, the cutter 300 includes a base 30, a table 32 disposed on the base 30, a support frame 34 coupled to the table 32, and a cutting unit 36 mated with the support frame 34. The cutting unit 36 is pivotally coupled to the support frame 34 by a pivot shaft 38 such that the cutting unit 36 can pivot up and down relative to the base 30 about the pivot axis 40.

The cutter 300 has a chamfering mode and a table cutting mode. In the description of the present invention, directional terms, such as left, right, front, back, up and down, etc., are referenced to the direction in which the cutter in the chamfer mode is normally operated, unless otherwise indicated. If the operator is close to the front side of the cutting machine, away from the operator is the rear side of the cutting machine. The main operation mode of the chamfering mode is the same as that of the conventional oblique cutting machine, that is, the workpiece is fixed relative to the table 32, and the workpiece is cut by the cutting unit 36; the main operation mode of the table cutting mode is the same as that of the conventional table saw, that is, the cutting unit is opposite to the table 32 or Base 30 fixed, by shift Move the workpiece to cut.

The support frame 34 can be tilted at an angle relative to the table 32 in both clockwise and counterclockwise directions to obliquely cut the workpiece. A tilt locking mechanism 42 (see Fig. 3) for locking the bracket 34 to the table 32 is provided between the support frame 34 and the table 32. The tilt lock mechanism 42 locks the support frame 34 to different tilt positions to cut the workpiece at different oblique angles.

The base 30 has a base support surface 44 that supports the workpiece in a horizontal direction. A guard rail 46 is provided on the base 30, and the guard rail 46 has an abutment surface 48 disposed perpendicularly to the base support surface 44, and is mainly used for abutting against the workpiece in the vertical direction for cutting.

The table 32 is supported on the base 30 and has a first working surface 50 for supporting the workpiece in the horizontal direction. The first working surface 50 is substantially flush with the base support surface 44, and the two cooperate to support the workpiece together. The table 32 is further provided with a first cutting groove 52 extending in the longitudinal direction.

The first working surface 50 and the abutting surface 48 form a first working area 53. When the cutter is in the bevel mode, the workpiece is placed in the first working area 53.

The table 32 is rotatably disposed on the base 30 such that the table 32 can rotate the cutting unit 36 relative to the base 30 to facilitate cutting of the workpiece at different oblique angles.

In the present embodiment, as shown in Fig. 2, the table 32 is provided with a flange 3 1 on which the boss 33 is provided to cooperate with the flange 31. The table 32 is rotatably disposed on the base 30. In order to make the rotation of the table 32 relative to the base 30 more convenient, a circular arc-shaped groove (not numbered) is further provided on the table 32, and a pin received in the circular-shaped groove is provided on the guard rail 46 ( Not numbered). When the table 32 is rotated relative to the base 30, the pin slides in a circular arc-shaped groove to guide the oblique angle.

Referring again to Figure 1, the cutting machine is provided with a beveled locking mechanism 54 that locks the table 32 to the base 30. In the present embodiment, the bevel locking mechanism 54 includes a locking screw 56 threaded onto the guard rail 46. The table 32 is locked relative to the base 30 by tightening the locking screw 56 so that its end face is in contact with the first working surface 50 of the table 32.

The cutting unit 36 includes a fixed shroud 35 pivotally coupled to the support frame 34, a motor housing 37 coupled to the fixed shroud 35, a motor (not shown) housed in the motor housing 37, and a saw blade driven by the motor. 39. A movable shield 43 connected to the fixed shield 35. Therein, the saw blade 39 rotates about the first axis 45. An operating handle 41 is also provided on the cutting unit 36, and pressing the operating handle 41 causes the cutting unit 36 to pivot about the pivot axis 40 to perform the cutting operation. Fixed shield 35 usually with motor The housing 37 is fixedly attached to cover a portion of the saw blade 39. The movable shield 43 is hinged to the fixed shield 35 for covering the remaining saw blade 39 when the cutter 300 is in the non-cutting position, and the movable shield 43 is rotatable relative to the fixed shield 35 to expose the saw blade 39. Used to cut the workpiece.

As shown in Fig. 3, when the cutter is in the bevel mode, the workpiece is placed in the first working area 53, and the saw blade 39 is at least partially located in the first working area 53. In operation, the workpiece is placed on the first work surface 50 while resting against the abutment surface 48. The handle 41 is then operated by the operator and pressed down to pivot the cutting unit 36 about the pivot axis 40. At this point, the saw blade 39 is lowered to cut the workpiece. If it is necessary to cut the workpiece, the saw blade 39 will pass through the first cutting groove 52, and if it is not necessary to cut the workpiece, it is only necessary to press the cutting unit 36 down to a certain position.

Referring again to Figures 1 and 2, the base 30 has a second working surface 58 for supporting the workpiece in a horizontal direction, and the base 30 is further provided with a second cutting groove 60 extending in the longitudinal direction. The second cutting groove 60 is parallel to the first cutting groove 52 and located below the first cutting groove 52. In the present embodiment, the plane formed by the center line of the second cutting groove 60 and the center line of the first cutting groove 52 is perpendicular to the first work surface 50. Of course, it will be appreciated by those skilled in the art that the base 30 can also be provided with only a recess that receives a partial saw blade 39 and allows the saw blade 39 to rotate about the table 32 within a certain range.

The cutter has a second working area 61 formed between the second work surface 58 and the table 32. When the workpiece is placed in the second working area 61, the saw blade 39 is at least partially located in the second working area 61. When the cutter is in the table cutting mode, the saw blade 39 passes through the first cutting groove 52 into the second working area 61. At this time, the saw blade 39 may pass through the second cutting groove 60 for cutting the workpiece; or may not pass through the second cutting groove 60 for cutting the workpiece.

In order to make the structure of the cutting machine simpler and more compact. The first working face 50 and the second working face 58 are located on the same side of the first axis 45. That is, the first and second working faces 50 and 58 are both located below the first axis 45. In the present embodiment, the first and second working faces 50 and 58 are disposed in parallel, and the distance between the two planes is smaller than the height of the base 30. Moreover, the distance between the first working surface 50 and the second working surface 58 is smaller than the radius of the saw blade 39.

The second working surface 50 is placed on the base 30, and only the size of the base 30 needs to be changed to increase the cutting ability in the table cutting mode.

The second working surface 50 is disposed on the base 30, and the cutting ability of the cutting machine in the chamfer mode is not affected.

Since the distance between the second working surface 50 and the lower bottom surface of the base 30 is small, the cutting machine of the present invention does not need to add additional auxiliary support as compared with the solution in which the second working table is disposed on the fixed shield. The device can also process longer workpieces.

The cutting machine also has a mode switching mechanism that converts between the chamfering mode and the table cutting mode. The mode switching mechanism includes a table locking release mechanism 64 that operatively converts the cutter from the table cutting mode to the bevel mode.

The mode switching mechanism further includes a bevel lock release mechanism 62 that operatively converts the bevel mode to a desk cut mode. Of course, those skilled in the art will also appreciate that the table locking release mechanism 64 and the bevel lock release mechanism 62 can be a mechanism.

In the present embodiment, the bevel lock release mechanism 62 is disposed between the cutting unit 36 and the support frame 34 for controlling the pivoting range of the cutting unit 36 in the bevel mode. At the same time, the bevel mode can also be converted to the table cut mode by operating the bevel lock release mechanism 62.

The bevel lock release mechanism 62 includes a stopper movably disposed on one of the support frame 34 and the cutting unit 36 and a stopper disposed on the other one, when the stopper and the stopper are disengaged, for Convert the bevel mode to the desk cut mode.

In this embodiment, as shown in FIG. 4, the stopper is a stopper pin 66 movably disposed on the support frame 34, and the stopper is a groove 68 fixedly disposed on the fixed shield 35, and the stopper pin 66 is received in In the groove 68, the cutter is in the chamfer mode.

The support frame 34 is provided with a circular hole 65 through which the stopper pin 66 is received in the recess 68. Also provided between the stop pin 66 and the support frame 34 is a spring (not shown) which causes the stop pin 66 to remain in the recess 68 at all times.

The groove 68 is a circular groove having both end faces 67 and 69. The stop pin 66 is slidable within the recess 68 when the cutting unit 36 pivots about the pivot axis 40 relative to the support frame 34. When the stopper pin 66 is engaged with the end surface 67, the upper limit position of the cutting unit 36 is defined, thereby preventing the cutting unit 36 from moving excessively upward; when the stopper pin 66 is engaged with the end surface 69, the lowermost position of the cutting unit 36 is defined, The cutting unit 36 is prevented from being excessively lowered.

When the chamfering mode needs to be converted into the table cutting mode, the stopper pin 66 is pulled to overcome the spring force, so that the stopper pin 66 is disengaged from the groove 68, and at the same time, pressing the cutting unit 36 can make the saw blade 39 enter the second work. Area 61 (see Figure 1), thus entering the desk cut mode.

In order to adjust the lower limit position of the cutter in the bevel mode, an adjustment screw 70 is further disposed on the fixed shield 35, and the adjustment screw 70 passes through the end surface 69 of the recess 68 and is screwed to the fixed shield 35. The end face of the adjusting screw 70 can be engaged with the retaining pin 66 instead of the end face 69 of the recess 68 to adjust the lower limit position of the cutter by adjusting the length of the screw 70 into the recess 68. Of course, there are many specific implementations of the bevel lock release mechanism 62. For example, the stopper is a rotatable rotating block disposed on the support frame 34, and the stopper is a convex surface fixedly disposed on the fixed shield 35. When the rotating block is mated with the convex surface, the cutting machine is in the chamfering mode and the cutting unit 36 is in the lower limit position. When the chamfering mode needs to be converted into the table cutting mode, the rotating block is rotated to disengage the convex surface from the rotating block, and at the same time, the cutting unit 36 is pressed down, and the cutting unit 36 can be further pressed down to enter the table cutting mode.

The table locking release mechanism 64 may be disposed between the cutting unit 36 and the table 32, or between the cutting unit 36 and the base 30, or between the cutting unit 36 and the support frame 34, or at the cutting unit 36. Between the guard rails 46. Moreover, the table locking release mechanism 64 is mainly used for controlling the cutting unit 36 to be fixed relative to the table 32 or the base 30 in the table cutting mode, and the vertical movement cannot be generated. Thereby maintaining the cutting machine in the table cutting mode, safe operation. At the same time, the table cutting mode can also be converted to the chamfer mode by operating the table locking release mechanism 64, i.e., the locking of the cutting unit 36 is released, so that the cutting unit 36 can be moved relative to the table 32 or the base 30.

In the present embodiment, the table locking release mechanism 64 is disposed between the cutting unit 36 and the table 32.

As shown in FIGS. 5 to 7, the table locking release mechanism 64 includes an operating button 72 movably disposed on the table 32, a locking member 74 coupled to the operating button 72, and a fitting member 76 disposed on the cutting unit 36. The operating button 72 is operable to engage the locking member 74 with the mating member 76 to cause the cutting machine to be in the table-cut mode; when the locking member 74 is disengaged from the mating member 76, it is used to convert the table-cut mode to the bevel mode.

In the present embodiment, the operating button 72 is slidably disposed on the table 32 by the mounting seat 78. The mounting seat 78 is fixed to the front side of the table 32 by screws and is symmetrically disposed with respect to the first cutting groove 52 (as shown in Fig. 1). The mounting seat 78 is provided with a sliding slot (not labeled) for sliding the operating button 72, and a spring is provided between the operating button 72 and the mounting seat 78, which spring keeps the operating button 72 at all times so that the locking member 74 cooperates The locking position of the piece 76 is matched.

The fitting member 76 is a card slot 76 provided on the fixed shield 35.

One end of the locking member 74 is locked on the operating button 72, and the other end is pivotally connected to the table 32 via a pin 80, and a hook 82 is formed on the locking slot 76. Under the action of the spring, the hook 82 will always stop the slot 76 (as shown in Figure 5), thereby causing the cutting unit 36 to be fixed relative to the table 32 or base 30. When the operating button 72 is pushed away from the table 32, the operating button 72 will move the locking member 74 to the end while rotating about the axis of the pin 80, thereby The hook 82 is disengaged from the slot 76 (as shown in Figure 6); the cutting unit 36 can be pivoted upward to convert the cutter from the table-cut mode to the bevel mode.

In order to operate the cutter safely in the table-cut mode, a boring tool 83 is also provided on the mount 78. When the cutter is in the table-cut mode, the saw blade 39 enters the second working area 61 (see Fig. 1), and the boring tool 83 is aligned with the saw blade 39.

Of course, there are many specific implementations of the table locking release mechanism 64, such as placing a table locking release mechanism between the cutting unit and the support frame. The table locking release mechanism 64 includes a locking pin disposed on one of the cutting unit 36 and the support frame 34 and a locking hole provided on the other, the locking pin and the locking hole being engaged, the cutting machine being in the table cutting mode. When the locking pin is disengaged from the locking hole, the table cutting mode is switched to the chamfer mode.

As shown in Fig. 8, in order to make the cutting machine in the table cutting mode, the saw blade 39 is perpendicular to the second working surface 58, the cutting machine is further provided with a positioning mechanism 84.

In the present embodiment, the positioning mechanism 84 is disposed between the cutting unit 36 and the base 30. The positioning mechanism 84 includes a positioning hole 86 provided in the motor housing 37 and a positioning pin 88 provided on the guard rail 46. As shown in Fig. 9, the cutting machine is in the table cutting mode, the positioning hole 86 is engaged with the positioning pin 88, the saw blade 39 is perpendicular to the second working surface 58, and the saw blade 39 is perpendicular to the abutment surface 48 of the guard rail 46.

Of course, in the table cutting mode, the positioning hole 86 and the positioning pin 88 can be precisely matched, and the guard rail 46 is further provided with an adjusting structure 89 for adjusting the relative position of the positioning pin 88.

Referring again to Figures 8 and 9, a first switch 90 is provided on the operating handle 41 for controlling the motor in the bevel mode. According to the operating habit of the bevel mode, the first switch 90 is a non-self-locking switch. The first switch 90 is operated to control the rotation of the motor; and when the first switch 90 is released, the motor stops rotating.

A switch box 92 and a control panel 94 are also provided on the fixed shield 35. The switch box 92 is mainly used to cover electronic components. A second switch 96 is provided on the control panel 94 for controlling the motor in the table mode. Further, the control panel 94 is provided with a display lamp 98 which can indicate whether the cutting machine is in the table cutting mode and an overload protector 100 which is powered off in the event of an overload. The principle of the display lamp 98 which is illuminated by the energization and the overload protector 100 which is de-energized in the event of an overload is well known to those skilled in the art and will not be described again.

According to the operating habit of the cutting mode, the second switch 96 is a self-locking switch, that is to say, pressing the second switch 96 can control the motor to start and keep rotating; and when the second switch 96 is pressed again, the motor stops. Turn. As shown in Figures 10 through 12, the cutter is also provided with a safety switch 102 in order to be able to safely operate the cutter and the differences in different modes of operation.

As shown in FIG. 10, the safety switch 102 has two states. In the first state, the cutting machine is in a bevel mode, the safety switch 102 allows the first switch 90 to control the motor and the second switch 96 to control the motor; The cutting machine is in the table cutting mode, and the safety switch 102 allows the second switch 96 to control the motor to limit the first switch 90 to control the motor.

As shown in Fig. 11, the control safety switch 102 is in the first state or the second state and can be implemented in a variety of electronic and mechanical manners. In the present embodiment, the safety switch 102 is fixedly disposed on the fixed shield 35. The safety switch 102 will rotate about the pivot axis 40 as the cutting unit 36. The safety switch 102 has a contact 106 on which a projection 104 is disposed. The contact 106 will rotate about the pivot axis 40 with the cutting unit 36. The contact 106 is selectively contacted and disengaged from the projection 104 such that the safety switch 102 switches between the first state and the second state.

When the cutting machine is in the chamfering mode, the cutting unit 36 pivots about the pivot axis 40 at the upper limit position and the lower limit position, and the pivoting angle ranges from about 40 degrees to about 90 degrees, within which the safety switch 102 is not caused. The contact 106 is in contact with the projection 104. At this time, the safety switch 102 is in the first state, the operator operates the first switch 90 to control the motor, and the second switch 96 does not control the motor.

As shown in Figure 12, the cutter is in the table cut mode. At this time, since the cutting unit 36 is moved beyond the lower limit position about the pivot axis 40 and continues to move downward, the contact 106 of the safety switch 102 is brought into contact 104. At this time, the safety switch 102 is in the second state, the operator can operate the second switch 96 to control the motor, and the first switch 90 does not control the motor.

In the preferred embodiment, in order to improve the operator's comfort in consideration of the rotational direction of the saw blade 39, the advancement direction of the workpiece is from the rear side to the front side in the table cutting mode. Of course, the direction of advancement of the workpiece can also be used from front to back.

In order to make the cutting machine in the table cutting mode, the workpiece is not driven to move in the direction of the table 32 due to the rotation of the saw blade 39. The cutting machine is further provided with a workpiece pressing mechanism 114, as shown in FIG. The workpiece pressing mechanism 114 prevents the workpiece from moving in the direction of the table 32 but does not hinder the pushing of the workpiece in the direction of the second cutting groove 52.

As shown in Fig. 13, the workpiece pressing mechanism 114 includes a platen 116 movably disposed on the table 32 and a stopper mechanism 118 for restraining the platen 116 at a predetermined position.

As shown in FIG. 14, in the preferred embodiment, the pressure plate 116 is rotatably connected to the connecting rod mechanism. On the table 32, and between the pressure plate 116 and the table 32, an elastic member 120 is provided for maintaining the pressure plate 116 at a position close to the second working surface 58 at all times.

The pressure plate 116 is pivotally coupled to the link 122 and the link 122 is pivotally coupled to the table 32. The platen 116, the link 122 and the table 32 constitute a parallel four-bar linkage. Thereby, the platen 116 can be moved parallel to the table 32 through the four links 122.

In the preferred embodiment, to stabilize the workpiece pressing mechanism 114, the pressure plate 116 is pivotally coupled to the table 32 by four links 122.

An elastic member 120 is disposed between the link 122 and the table 32 to maintain the platen 116 in a position close to the second working surface 58 at all times. In the preferred embodiment, the resilient member 120 is configured as a torsion spring. Of course, the elastic member 120 can also be provided as a tension spring or the like.

The pressure plate 116 is provided with a groove 124 through which the saw blade 39 passes, and the pressure plate 116 further has a contact surface 126 which is in contact with the workpiece, and the pressure plate 116 extends longitudinally in the direction in which the workpiece is advanced. There is one end 128 that is upwardly lifted in the longitudinal extension direction and the other end 130 opposite thereto. One end 128 is set to tilt upwards to facilitate the pushing of the workpiece.

As shown in FIG. 15 and FIG. 16, the limiting mechanism 118 includes a limiting member 132 that cooperates with the pressure plate 116, a driving mechanism 134 that drives the limiting member 132, and a driving member 136, and fixes the driving member 136 to the table. The device 138, wherein the driving member 136 is movably disposed on the table, and the limiting member 132 is driven by the driving mechanism 134 to cooperate with the pressing plate 116.

In the preferred embodiment, the fixing device 138 is bolted to the structure. To improve the operational comfort, one end of the bolt is provided with a convenient knob 140 for easy operation. In addition, the limiting mechanism 118 can directly control the preset position of the pressure plate 116 by using a screw or control the preset position of the pressure plate 116 by a single cam mechanism.

In the preferred embodiment, the drive member 136 is provided with an eccentric pin 142. The drive mechanism 134 includes a first rod 144 coupled to the eccentric pin 142 and a second rod 147 pivotally coupled to the first rod 144 by a coupling pin 146, and a slide bar 148 disposed on the table by bolts. The sliding bar 148 is provided with a sliding slot 150. The limiting member 132 is slidably disposed in the sliding slot 150, and the limiting member 132 is coupled to the second rod 147, so that the driving member 136 can be operatively disposed to the first rod 144. The second rod 147 is moved to drive the stopper 132 to slide along the slide bar 148. The direction in which the chute 150 extends is parallel to the extending direction of the second cutting groove 60, so that the driving member 136 causes the stopper 132 to move along the extending direction of the second cutting groove 60.

In the preferred embodiment, the limiting members 132 are disposed in two, and the two limiting members 132 pass through the connecting rods 156. Connections, correspondingly, the slide bars 148 that cooperate with the limit members 132 are also provided in two.

As shown in Figure 17, the drive member 136 is rotatably coupled to the table 32. The driving member 136 is further provided with a guiding pin 152 (shown in Fig. 16). Correspondingly, the working table 32 is provided with a guiding groove 154 which cooperates with the guiding pin 152. When the drive member 136 is operated, the drive member 136 is moved along the guide groove 154 under the guidance of the guide pin 152.

The cutter is also provided with indicating means 162 for indicating that the limiting mechanism 118 can limit the upper limit position of the pressure plate 116. The indicating device 162 includes a scale 164 disposed outside the guide slot 154 and a pointer 166 disposed on the driver member 136. When the drive member 136 is rotated, the scale 164 corresponding to the pointer 166, that is, the limit mechanism 118, can limit the height of the pressure plate 116.

Referring to FIG. 18 and FIG. 19, the limiting member 132 is provided with a limiting surface 158. The pressing plate 116 is provided with a limiting block 160. The limiting surface 158 cooperates with the limiting block 160 to limit the pressing plate 116 to a predetermined position.

The workpiece pressing mechanism 114 is operated as follows: First, the fixing knob 140 is loosened, and then the driving member 136 is rotated. At this time, the driving member 136 can be rotated to the desired position by the pointer 166 and the corresponding scale 164; During the rotation of the member 136, the driving member 136 drives the driving mechanism 134 to urge the limiting member 132 to move along the extending direction of the second cutting groove 60. Then, the workpiece is placed in the second working area 61, and is pushed from the rear of the cutting machine, that is, the one end 128 which is lifted from the pressing plate 116 is pushed in. Under the pushing of the workpiece, the pressing plate 116 overcomes the force of the elastic member 120 toward the working table. The direction of motion of 32 is maintained until the stop surface 158 of the stop member 132 mates with the stop block 160 on the pressure plate 116 such that the pressure plate 116 is constrained to a predetermined position and the fixed knob 140 is finally tightened.

As shown in Figs. 20 and 21, when the cutter is in the table-cut mode, the main working surface 58 of the base 30 is also provided with a main guide 168 for guiding the workpiece.

The main guide attachment 168 has a base 170, a locking mechanism 172 for locking the base 170 to the base 30, and a pointer (not shown) having a stop face 174 for stopping the workpiece. A scale (not shown) is provided on the base 30 in a direction perpendicular to the second cutting groove 52. When the table cutting operation is performed, the main guide attachment 168 is first moved to the corresponding scale indicated by the pointer according to the predetermined size to be cut, and then the base 170 is locked to the base 30 by the locking mechanism 172. In operation, the workpiece is abutted against the stop surface 174 of the base 170, so that the workpiece can be easily pushed and the cutting can be performed accurately.

To facilitate advancement of the workpiece into the second working area 61, the cutting machine is also provided with a workpiece pusher 176 having a body 178 and a pusher 180 that can be used to push the workpiece. Ontology 178 It can be operatively sleeved on the base 170 of the main guide 168. When the workpiece is advanced, the body 178 of the workpiece pushing member 176 is sleeved on the base 170 of the main guide 168, and the pushing portion 180 abuts against the workpiece, so that the operating body 178 can advance the workpiece along the main guide 168. A second work area 61 is launched.

The cutting machine also includes an auxiliary guide attachment 182 that includes a body 184 that can be placed over the second work surface 58 and a locking mechanism 186 that locks the body 184 to the base 30.

As shown in Figures 20 through 22, the body 184 has a guide surface 188 for guiding the workpiece, and the height of the body 184 is less than the minimum distance between the platen 116 and the second work surface. When the table cutting operation is performed, the main guide member 168 is first moved to the corresponding position according to the predetermined size to be cut, and then the base body 170 is locked on the base 30 by the locking mechanism 172; the workpiece to be cut is placed next, and the workpiece is moved according to the cutting workpiece. The guide attachment 182 is such that one side of the workpiece to be cut abuts against the stop surface 174 of the main guide attachment 168; the other side abuts against the guide surface 188 of the auxiliary guide attachment; and finally the auxiliary guide attachment is assisted by the locking mechanism 186 The 182 is locked to the base 30. Thus, in operation, the auxiliary guide attachment 182 can prevent the workpiece being swayed and affect the cutting accuracy; at the same time, the auxiliary guide attachment 182 also prevents the workpiece from being moved toward the operator in the direction of the operator, thereby causing injury to the operator.

The above-described embodiments are merely the most preferred embodiments provided by those skilled in the art in understanding the present invention. The invention is not limited to the specific embodiments described above. Any modifications that are easily conceivable by those skilled in the art are within the inventive concept of the present invention.

Claims

Claim

A cutting machine comprising:

Base

a workbench supported on the base, the workbench having a first work surface supporting the workpiece; a support frame coupled to the workbench;

a cutting unit rotatably coupled to the support frame, the cutting unit including a fixed shield rotatably coupled to the support frame, a motor housing coupled to the fixed shield, a saw blade, and being housed in the motor housing a motor that drives the saw blade to rotate about the first axis;

a guard rail connected to the base, the guard rail having an abutting surface against the workpiece, the abutting surface and the first working surface forming a first working area;

It is characterized by:

The base has a second working surface supporting the workpiece, the cutting machine has a second working area formed between the second working surface and the worktable, the cutting machine has a chamfering mode and a table cutting In the mode, the saw blade is at least partially located in the first working area; in the desk cutting mode, the saw blade is at least partially located in the second working area.

2. The cutting machine according to claim 1, wherein: the cutting machine comprises a table locking release mechanism, and the table locking release mechanism is operable to convert the table cutting mode into a bevel mode.

3. The cutting machine according to claim 2, wherein: the undercut lock release mechanism is disposed between the cutting unit and the table.

4. The cutting machine according to claim 3, wherein: the table locking release mechanism comprises an operation button movably disposed on the table, a locking member coupled to the operation button, and a fitting member disposed on the cutting unit The operation button is operable to engage the locking member with the fitting member to cause the cutting machine to be in the table cutting mode; the locking member and the fitting member are disengaged for converting the table cutting mode into the chamfer mode.

The cutting machine according to claim 4, wherein the fitting member is a card slot disposed on the fixed shield, and the locking member is provided with a hook for clamping the card slot.

6. The cutting machine according to claim 4, wherein: the operating button is slidably disposed on the table, and a spring is disposed between the operating button and the table, the spring The operating button is always held towards the table.

7. The cutting machine according to claim 2, wherein: the undercut lock release mechanism is disposed between the cutting unit and the support frame.

8. The cutting machine according to claim 7, wherein: the table locking release mechanism comprises a locking pin disposed on one of the cutting unit and the support frame and a locking hole provided on the other, the locking The pin cooperates with the locking hole, and the cutting machine is in the table cutting mode.

9. The cutting machine according to claim 2, wherein: said mode switching mechanism comprises a bevel lock release mechanism operable to convert the bevel mode to a table mode.

The cutting machine according to claim 9, wherein: the bevel lock release mechanism includes a stopper movably disposed on one of the support frame and the cutting unit and a stopper disposed on the other one The stopper and the stopper are disengaged for converting the chamfering mode into the table cutting mode.

1 . The cutting machine according to claim 10 , wherein: the stopper is a stop pin movably disposed on the support frame, and the stop member is a groove fixedly disposed on the fixed cover. The stopper pin is received in the groove, and the cutter is in a chamfering mode.

The cutting machine according to claim 11, wherein: the support frame is further provided with an adjusting screw for engaging with the stopper pin.

The cutting machine according to claim 10, wherein: the stopper is a rotatable rotating block disposed on the support frame, and the stopper is a boss fixedly disposed on the fixed cover When the rotating block is engaged with the boss, the cutting machine is in a chamfering mode and the cutting unit is in a lower limit position.

The cutting machine according to claim 2, wherein: the cutting machine comprises a first switch for controlling the operation of the motor in the bevel mode; and a second switch for controlling the operation of the motor in the table cutting mode The cutting machine further includes a safety switch having two states. In the first state, the cutting machine is in a chamfering mode, and the safety switch allows the first switch to control the motor to limit the second switch to control the motor; In the second state, the cutting machine is in a table-cut mode, and the safety switch allows the second switch to control the motor to limit the first switch to control the motor.

The cutting machine according to claim 14, wherein: the support frame is provided with a protrusion, The safety switch has a contact that is selectively engageable with the contact for the safety switch to transition between a first state and a second state.

The cutting machine according to claim 1, wherein: a positioning mechanism is provided between the cutting unit and the base, and in the table cutting mode, the positioning mechanism is used to ensure that the saw blade is perpendicular to the The second working surface.

The cutting machine according to claim 16, wherein: the positioning mechanism comprises a positioning hole provided on the motor housing and a positioning pin disposed on the guard rail, and the positioning hole and the positioning pin cooperate The saw blade is perpendicular to the second working surface.

A cutting machine according to claim 1, wherein: said cutting machine is further provided with a workpiece pressing mechanism, said workpiece pressing mechanism comprising a pressure plate movably disposed on said table and restricting said platen The limit mechanism of the predetermined position.

A cutting machine according to claim 18, wherein: said pressure plate is rotatably coupled to the table by a parallel four-bar linkage mechanism, and an elastic member is provided between the pressure plate and the table, said elasticity The element maintains the pressure plate at a position towards the second table. The cutting machine according to claim 18, wherein: the limiting mechanism comprises a limiting member engaged with the pressure plate, a driving mechanism and a driving member for driving the limiting member, and fixing the driving member to the table. The device, wherein the driving member is movably disposed on the worktable, and the driving member drives the limiting member to cooperate with the pressure plate.

A cutting machine according to claim 20, wherein: said driving member is rotatably coupled to said table and is provided with an eccentric pin, said driving mechanism comprising a first rod connected to the eccentric pin and A second rod pivotally coupled to the first rod, a slide rod disposed on the table, wherein the drive member is operable to move the first rod and the second rod to drive the limit member to slide along the slide rod.

The cutting machine according to claim 20, wherein: the limiting member is provided with a limiting surface, and the pressing plate is provided with a limiting block, and the limiting plate cooperates with the limiting block to clamp the pressing plate Limited to the predetermined location.

The cutting machine according to claim 1, wherein: said cutting machine further comprises an auxiliary guiding attachment, said auxiliary guiding attachment comprising a body positionable on said second working surface and locking said main body on said base a locking mechanism, wherein the body has a guide for guiding a workpiece And a height of the body is less than a minimum distance between the pressure plate and the second work surface. The cutting machine according to claim 1, wherein: said first and second working faces are located on the same side of said first axis.

The cutting machine according to claim 1, wherein: said first and second working faces are parallel.

A cutting machine according to claim 25, wherein: a distance between said first working surface and said second working surface is smaller than a height of said base.

The cutting machine according to claim 25, wherein: a distance between said first working surface and said second working surface is smaller than a radius of said saw blade.