CN102430801A

CN102430801A - Cutting machine

Info

Publication number: CN102430801A
Application number: CN2011100272394A
Authority: CN
Inventors: 哈利·索默; 沃伦·布朗; 格雷厄姆·格哈德
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2010-09-29
Filing date: 2011-01-19
Publication date: 2012-05-02
Anticipated expiration: 2031-01-19
Also published as: CN102430802A; CN202015879U; TWM415766U; CN102430801B; CN202015878U

Abstract

The invention relates to a cutting machine which comprises a base, a saw mechanism connected to the base and a support leg component for supporting the base, wherein the support leg component comprises at least three support legs connected with the base. Each support leg is provided with a first positioning surface and a second positioning surface which are connected with each other and arranged at an angle; a first matching surface and a second matching surface which are corresponding to the first positioning surface and the second positioning surface are arranged on the side wall of the base; an included angle greater than 90 degrees is formed between the first and second matching surfaces and the upper surface of the base; and the cutting machine also comprises a fixing device for fixing the support legs on the base so that the first and second positioning surfaces are respectively contacted with the first and second matching surfaces. Compared with the prior art, the fixing device in the invention has a simple structure and provides stable support.

Description

Cutting machine

Technical Field

The present invention relates to a cutting machine.

Background

In the prior art, there are a variety of supports for supporting the cutting machine so that the operator can comfortably operate the cutting machine. The support in the prior art has the advantages of stable support, heavy weight, inconvenient carrying and high cost. For the purposes of reducing cost, facilitating transportation and the like, a cutting machine with a bracket and a very simple structure appears in the market at present.

The support consists of four support legs for supporting the cutting machine and a locking mechanism for connecting the support legs to the base of the cutting machine. The locking mechanism comprises a clamping block arranged on the base, a rectangular frame used for accommodating the supporting leg, and a bolt and a knob which are used for connecting the clamping block and the rectangular frame. During installation, the supporting legs are inserted into the rectangular frame and then fixed through screwing the knob. The rectangular frame is required to be matched with the appearance of the supporting leg, so that the requirement on precision is high, and the cost is increased; in addition, the supporting legs need to be inserted into the rectangular frame which is matched with the shape of the supporting legs, but has small gaps with the supporting legs, so that the installation is troublesome.

Disclosure of Invention

The invention provides a cutting machine which is simple in structure and convenient to install.

In order to achieve the purpose, the technical scheme of the invention is as follows: a cutting machine comprises a base, a cutting mechanism and a cutting mechanism, wherein the base is provided with an upper surface for supporting a workpiece, a lower surface arranged opposite to the upper surface and a base side wall for connecting the upper surface and the lower surface; the saw mechanism is connected to the base and comprises a motor and a saw blade rotationally driven by the motor; the supporting leg assembly comprises at least three supporting legs which are connected with the base and used for supporting the base; the supporting legs are provided with a first positioning surface and a second positioning surface which are connected with each other and arranged at an angle; a first matching surface and a second matching surface corresponding to the first positioning surface and the second positioning surface are arranged on the side wall of the base, and the first matching surface and the second matching surface form an included angle of more than 90 degrees with the upper surface; the cutting machine further comprises a fixing device for fixing the supporting leg on the base, so that the first positioning surface and the second positioning surface are respectively in contact with the first matching surface and the second matching surface.

Compared with the prior art, the support frame has the advantages that the first positioning surface and the second positioning surface can be respectively contacted with the first matching surface and the second matching surface through the fixing device, so that the support leg is fixed on the base of the cutting machine. The structure is simple and the installation is very convenient.

Preferably, the base is provided with a limiting surface opposite to the first matching surface and the second matching surface, and the supporting leg is provided with a limiting edge abutted against the limiting surface. And the distance between the limiting edge and the first matching surface or the second matching surface is greater than the thickness of the first side plate and the second side plate of the supporting leg. So, when the supporting leg is installed on the base, the supporting leg supports the base more stably.

Preferably, the sum of the angle formed between the limiting surface and the upper surface and the angle between the first mating surface and the upper surface is greater than 180 degrees.

Preferably, a guide groove with one end penetrating out of the lower surface is arranged on the side wall of the base, the fixing device comprises a locking element penetrating through the supporting leg and the side wall of the base and an operating piece matched with the locking element, and the locking element can slide along the extending direction of the guide groove.

Preferably, the supporting leg comprises a first side plate and a second side plate which are connected with each other and arranged at an angle, and a supporting plate for connecting the first side plate and the second side plate, wherein the supporting plate is provided with a through hole through which the locking element can pass.

Preferably, the support leg is provided with a matching part matched and connected with the base and a support part connected with the matching part, and the cross section of the matching part is gradually increased from one end matched and connected with the base to the other end matched and connected with the support part.

Preferably, the support portion includes one end connected to the fitting portion and the other end disposed opposite thereto, wherein a cross section of the support portion is gradually reduced from the one end to the other end.

Preferably, a supporting rod is arranged on the base, and a supporting component used for supporting the workpiece together with the base is arranged on the supporting rod.

Preferably, a locking mechanism is arranged between the support rod and the base, and the support rod is directly arranged on the base through the locking mechanism.

Preferably, the locking mechanism comprises a connecting member mounted on the base, a locking member movably arranged on the connecting member, and an operating knob for driving the locking member to move, wherein the connecting member and a groove on the base form a space for the support rod to pass through, the locking member comprises a matching surface for supporting the support rod, and the support member can be fixed between the groove and the matching surface by rotating the operating knob.

Drawings

The invention is further described with reference to the following figures and embodiments.

Fig. 1 is a perspective view of the cutting machine of the present invention.

Fig. 2 is a perspective view of the base of the cutting machine of the present invention.

Fig. 3 is a perspective view of a portion of the base of the cutting machine of the present invention, with the base turned upside down.

Fig. 4 is a top view of the cutting machine of the present invention with the turntable and saw mechanism removed.

Figure 5 is a schematic view of a support leg of the cutting machine of the present invention.

FIG. 6 is a partially exploded perspective view of the support leg of the cutting machine of the present invention mounted to a base.

Fig. 7 is a sectional view taken along line a-a of fig. 4.

Fig. 8 is a partially enlarged view of fig. 7.

Fig. 9 is a schematic view of the supporting assembly of the cutting machine of the present invention placed on both sides of the base to support a workpiece together with the base.

Fig. 10 is a schematic view of the cutting machine of the present invention with the turntable and saw mechanism removed.

Wherein,

20. cutting machine 22, base 24 and rotary table

26. Saw mechanism 28, saw blade 30, turntable surface

32. Cutting groove 34, locking device 36, upper surface

38. Accommodating cavity 40, circular boss face 42, inner side wall

43. Stop surface 44, lower surface 45, edge

46a-d, base side walls 46e-f, boss side walls 47, webs

48a-b, connecting wall 49, receiving groove 50, cavity

51. First and second mating surfaces 53 of

flanges

52a, 52b bosses

54. Intersection line 55,

guide grooves

56a, 56b, first and second side plates

58a-b mating portion 61, first and second locating surfaces for

retaining edges

62a, 62b

63.

Support plates

64, 64a foot pads 65 through holes

66. Support legs 68a-b, first support 70a-b, second support

71. Button 72, first connecting plate 73, threaded hole

74. Connecting portion 75, support bar 76 second connecting plate.

77. Containing space 78, waist-shaped hole 80 and fixing device

82. Bolt 86, knob 90 support assembly

92. Body 94, support 96, bearing surface

98. Lower bottom surfaces 100a-d, body sidewalls 102, and upper top surface

104. Receiving cavity 106, stop plate 108, stop surface

110. Concave 112,

support rod

114, 114a locking mechanism

116, 1146 connecting piece 120, side rod 122, bottom rod

124. Groove 126, end rod 130, hole

132. Locking member 134, operating knob 136, mating surface

138. Opening of the container

Detailed Description

Referring to fig. 1, a cutter 20 includes a base 22, a turntable 24 pivotally connected to the base 22, and a saw mechanism 26 connected to the turntable 24, wherein the saw mechanism 26 includes a motor (not numbered), a saw blade 28 rotatably driven by the motor. A saw mechanism 26 is pivotably provided on the turntable 24 by a rotary shaft (not numbered) to effect cutting of the workpiece.

According to the usual way of use of such a cutting machine by an operator, it is defined that the front portion of the cutting machine 20 is close to the operator and the rear portion of the cutting machine 20 is far from the operator.

The turntable 24 has a turntable surface 30 for supporting a workpiece, and the turntable 24 is rotatably provided on the base 22 about a pivot axis (not shown) perpendicular to the turntable surface 30. The turntable 24 is provided with a longitudinally extending cutting slot 32 through which the saw blade 28 passes. The saw mechanism 26 and turntable 24 move together pivotally relative to the base 22 to achieve beveling at various angles. A locking device 34 for locking the turntable 24 to the base 22 is provided at the front of the turntable 24. And the turntable 24 and the base 22 are both symmetrically disposed with respect to the center line of the cutting groove 32.

The base 22 is supported on a work surface such as a table, stand or the like so that the operator can comfortably operate the cutting machine, although the base 22 may also be supported directly on the work surface formed by the ground by its base lower support surface. Referring to fig. 2, the base 22 has an upper surface 36 for supporting a workpiece, a lower surface 44, and a receiving cavity 38 for receiving a turntable, wherein the upper surface 36 is for supporting a workpiece and is substantially flush with the turntable surface 30, and the two cooperate to support a workpiece; the lower surface 44 is parallel to and opposite the upper surface 36, so here the lower surface 44 is the base lower support surface, although the lower surface 44 may also be curved, but the base lower support surface must be parallel to the upper surface 36.

The base 22 also has a circular boss face 40 that is lower in height than the upper surface 36, the circular boss face 40 being used to support the turntable 24. An inner sidewall 42 of the base 22 extends downwardly from the upper surface 36 to the circular boss face 40, and the inner sidewall 42 may extend obliquely outwardly relative to the upper surface 36. The four base sidewalls 46a-d of the base extend downwardly from the upper surface 36 to the lower surface 44. the base sidewalls 46a-d may extend obliquely outwardly relative to the upper surface 36, with the inner surfaces of the base sidewalls 46a-d forming an angle greater than 90 degrees with the upper surface 36 (as shown in fig. 4 and 8). Boss sidewalls 46e-f of the base extend downwardly from the circular boss face 40 to the lower surface 44. The connecting walls 48a-b of the base extend downwardly from the upper surface 36 to the lower surface 44 and the rounded boss face 40. Thus, two symmetrically disposed connecting walls 48a are used for the connection of the inner side wall 42 and the base side wall 46a and the connection of the base side wall 46a and the boss side wall 46 e; two symmetrically disposed connecting walls 48b are used to connect base side wall 46c to inner side wall 42 and base side wall 46c to boss side wall 46 f. As such, base sidewalls 46a-d, connecting walls 48a-b, and boss sidewalls 46e-f extend upwardly around a perimeter from edge 45 of lower surface 44. The upper surface 36 and the base side walls 46a-d, the connecting walls 48a-b, and the inner wall 42 form two symmetrical cavities 50 (only one of which is shown in FIG. 3), which cavities 50 reduce the weight and cost of the overall base.

As shown in fig. 2, 3 and 8, the four base side walls 46a-d define a perimeter forming the four corners of the base 22. First and second mating surfaces 52a-b are provided at the four corners of the base 22 in sequence, and a side of the base 22 will now be described in detail as the base 22 is symmetrically disposed with respect to the center line of the cutting slot. Referring to FIG. 3, the first and second mating surfaces 52a-b are formed directly on the inner surfaces of the base side walls 46a-d and form an angle greater than 90 degrees with the upper surface 36. And first and second mating surfaces 52a-b perpendicularly intersect at intersection line 54 at the four corners of base 22. As shown in fig. 4, the intersection lines 54 are each angled outwardly relative to the upper surface 36 such that each of the four corners forms a tapered mating surface, thereby making the base support more stable.

As shown in fig. 3 and 8, the base 22 is provided with a position-limiting surface 43 disposed opposite to the first and second engagement surfaces 52a-b, the position-limiting surface 43 is not parallel to the first and second engagement surfaces 52a-b, and the sum of the angle formed between the position-limiting surface 43 and the upper surface 36 and the angle formed between the first engagement surface 52a and the upper surface 36 is greater than 180 degrees. In the present embodiment, the angle formed between the position-limiting surface 43 and the upper surface 36 is equal to the angle formed between the first mating surface 52a and the upper surface 36, and is greater than 90 degrees. Rib plates 47 extending from the upper surface 36 to the lower surface 44 and forming an included angle of 90 degrees are arranged at the corners of the base 22, the limiting surfaces 43 are directly formed on the surfaces of the rib plates 47 opposite to the base side walls 46a-d, and the rib plates 47 and the base side walls 46c-d form accommodating grooves 49. The function of the stopper surface 43 and the receiving groove 49 will be described later in detail.

Referring again to fig. 2, for aesthetic reasons and for added strength, flanges 51 having bosses 53 are fixedly disposed on the base side walls 46a-d at the four corners of the base 22. The boss 53 is provided with a guide groove 55 having one end penetrating the lower surface 44, and the center line of the guide groove 55 coincides with the intersection line 54. The function of the guide groove 55 will be described later in detail.

Referring again to fig. 1, the cutting machine 20 further includes a support leg assembly removably attached to the base 22 for supporting the base 22. The support leg assembly includes at least three support legs 66 connected to the base. In the present embodiment, the support leg assembly includes four support legs 66 substantially distributed at four corners of the base 1, so as to support the entire cutting machine 20 to a suitable height for an operator to cut a workpiece.

The specific structure of one of the support legs 66 and the connection with the base 22 will be described in detail below. Referring to fig. 4-8, the support leg 66 includes a first side plate 56a and a second side plate 56b connected to the first side plate 56a, wherein the first side plate 56a and the second side plate 56b are disposed at an angle of about 90 degrees. The first side plate 56a and the second side plate 56b are respectively provided with a fitting part 58a-b connected with the base 22 and a supporting part connected with the fitting part 58 a-b. Here, the first side plate 56a and the second side plate 56b may be two side plates each having an angle formed by bending one side plate. And the first and

second side plates

56a, 56b can be bent, flanged, etc. to increase the strength of the side plates. And the first and

second side plates

56a, 56b may be made of a metal material such as steel, iron, alloy, etc.

As shown in FIG. 6, the mating portions 58a-b include first and

second locating surfaces

62a, 62b that correspond to the first and

second mating surfaces

52a, 52b of the base 22. The first and second positioning surfaces 62a and 62b are formed directly on the first and

second side plates

56a and 56b and are disposed at an angle of about 90 degrees. The cross-section of the mating portions 58a-b increases from one end mating with the base 22 to the other end mating with the support portion.

The support leg 66 is further provided with a support plate 63 fixedly connected to the first and

second side plates

56a, 56b, wherein the support plate 63 is provided with a through hole 65. The function of the through hole 65 will be described later in detail. The supporting plate 63 may be fixedly connected to the first and

second side plates

56a and 56b by screws, and the supporting plate 63 may be made of a non-metallic material such as plastic and rubber.

The support portion includes one end connected to the mating portions 58a-b and the other end contacting the ground, and a foot pad 64 is provided at the other end contacting the ground for enhancing friction and preventing damage to the ground. Because some ground is uneven and the supporting leg 66 needs to be adjusted sometimes, the adjustable foot pad 64a is arranged on one of the four supporting legs, so that the adjustment is convenient. The support portion includes one end connected to the mating portions 58a-b and an oppositely disposed other end, with the cross-section of the support portion gradually decreasing from one end to the other.

As shown in fig. 4, the support portion may be a unitary body. Of course, the support can also be provided in two parts in order to save packaging. As shown in fig. 5, the support portions include first support portions 68a-b and second support portions 70a-b connected to the mating portions 58 a-b. In this embodiment, the first and second support portions 68a-b and 70a-b are coupled together via a taper, wherein the first support portion 68a-b includes a first end coupled to the mating portion 58a-b and an oppositely disposed second end, and the cross-section of the first support portion 68a-b decreases from the first end coupled to the mating portion 58a-b to the second end. A first connecting plate 72 is provided at a second end of the first support portion 68a-b, the first connecting plate 72 being connected to the first support portion 68a and the first support portion 68b and forming a tapered connecting portion 74. A screw hole 73 through which a screw can pass is provided in the first connection plate 72.

The second support portions 70a-b include a first end connected to the first support portions 68a-b and an oppositely disposed second end, the second support portions 70a-b having a cross-section that gradually decreases from the first end to the second end. A second connecting plate 76 is provided at a first end of the second support portion 70a-b, the second connecting plate 76 connects the second support portion 70a and the second support portion 70b to form a tapered receiving space 77, and a kidney-shaped hole 78 is provided in the second connecting plate 76. At a second end of the second support 70a-b is a foot pad 64.

As shown in fig. 4 and 5, the connection portion 74 having a taper shape is received in the receiving space 77, and since the taper of the connection portion 74 and the receiving space 77 is gradually reduced toward the ground, the connection portion 74 is gradually tightened after being inserted into the receiving space 77, so that the first support portions 68a-b and the second support portions 70a-b can be directly connected together by the taper. In this embodiment, screws (not shown) or threaded knobs can be inserted through the waist-shaped holes 78 on the second connecting plate 76 to engage with the threaded holes 73 on the first connecting plate 72, so as to lock the second supporting portions 70a-b on the first supporting portions 68a-b, thereby making the support more secure. Of course, the second web 76 is provided with the kidney-shaped apertures 78 so that the relative positions of the second support portions 70a-b and the first support portions 68a-b, i.e., the height of the support cutter 22, can be adjusted.

As shown in FIG. 6, the cutter 20 also includes a fixture 80 that locks the support legs 66 to the base 22. The securing device 80 includes a locking element that passes through the support leg 66 and the base side walls 46a-d and an operating member that cooperates with the locking element. In the present embodiment, the locking element is a bolt 82, and the operating member is a nut (not shown) that engages with the bolt 82. For convenience of operation, a knob 86 is also fixedly connected to the nut. Of course, it will be appreciated by those skilled in the art that many variations in the specific structure of the fastening device of the present invention are possible, such as screws and threads and cam connections.

The bolt 82 passes through the through hole 65 in the support plate 63, the hole (not shown) in the support leg 66 and the guide groove 55 to engage with the knob 86. When the knob 86 is tightened, the first and

second positioning surfaces

62a, 62b of the support leg 66 are brought into close contact with the first and

second mating surfaces

52a, 52b, reducing the distance therebetween, thereby locking the support leg 66 to the base 22. When the knob 86 is unscrewed, the distance between the first and

second positioning surfaces

62a, 62b on the support leg 66 and the first and

second engagement surfaces

52a, 52b is increased, so that the support leg 66 can be easily disconnected from the base 22.

And the bolt 82 is slidable in the extending direction of the guide groove 55 due to the provision of the guide groove 55 having one end opened. When the support leg 66 is detached from the base 22, the knob 86 is not required to be unscrewed to disengage the bolt 82, but only the knob 86 is unscrewed, so that the support leg 66 can move relative to the base 22, and then the bolt 82 is moved in a direction away from the base 22 along the extending direction of the guide groove 55, so that the support leg 66 is detached from the base 22; during installation, the bolt 82 is moved along the extending direction of the guide slot 55 toward the base 22, and the knob 86 is tightened to lock the support leg 66 on the base 22. Thus, the support legs 66 can be easily disassembled.

As shown in fig. 7 and 8, at least a portion of the mating portion 58a-b is received in the receiving slot 49, and the mating portion 58a-b further includes a limiting edge 61 abutting against the limiting surface 43. The position-limiting edge 61 is not in the same plane as the first and

second positioning surfaces

62a, 62b, and the distance from the position-limiting edge 61 to the first and

second positioning surfaces

62a, 62b is greater than the thickness of the first and

second side plates

56a, 56 b. When the support leg 66 is mounted on the base 22, the mating portion 58a-b of the support leg 66 is received in the receiving groove 49, and the limiting edge 61 abuts against the limiting surface 43 of the rib plate 47, so that the mounting stability can be increased.

The specific operation can be as follows: the operator inserts the support leg 66 into the cavity 50 of the base, inserts the mating portions 58a-b of the support leg 66 into the receiving slot 49, abuts the limiting edge 61 against the limiting surface 43 of the rib plate 47, and screws the knob 86 to attach the first and

second positioning surfaces

62a, 62b of the support leg 66 to the first and

second mating surfaces

52a, 52b of the base 22, thereby locking the support leg 66 to the base 22. To remove the support leg 66, the knob 86 is simply unscrewed.

Support leg 66 is mounted on base 22 such that the intersection of first and

second side panels

56a, 56b of support leg 66 coincides with intersection 54 of first and second mating surfaces 52 a-b. As shown in fig. 4, the intersection of the first and

second side panels

56a, 56b and the intersection 54 are angled outwardly relative to the upper surface 36, which provides more stability to the base support and provides more room for the operator to operate and better ergonomics.

Referring again to FIG. 1, to increase the strength of the support leg assembly, the cutting machine 20 is also provided with four support bars 75 connecting the four support legs 66. Wherein, through holes (not shown) are arranged at both ends of each supporting bar 75, the button 71 passes through the through holes on the two supporting bars 75 and the waist-shaped hole 78 on the second connecting plate 76 in turn to be matched with the threaded hole 73 on the first connecting plate 72, so that one end of each supporting bar 75 is locked on the supporting leg 66, and each supporting bar 75 can be locked between the two supporting legs 66 by the same method. As such, the stability of the support leg assembly is increased.

As shown in fig. 9, the cutting machine is further provided with a support assembly 90 that supports the workpiece together with the base 22. The support assembly 90 may be adapted for use with a cutting machine that is not equipped with a support leg assembly and thus may be independently positioned on one or both sides of the base 22 as desired. In the embodiment, the left side of the cutting groove is defined as one side according to the conventional use mode of an operator; the right side of the cutting groove is the other side.

The support assembly 90 includes a body 92 and a support surface 96 disposed on the body 92 for supporting a workpiece, wherein the body 92 is further provided with a body lower support surface parallel to the support surface 96. The lower bottom surface 98 of the body 92 is parallel to the support surface 96, so here the lower bottom surface 98 is the body lower support surface, although the lower bottom surface 98 could be curved, but the body lower support surface must be parallel to the support surface 96.

The distance between the support surface 96 and the lower body support surface, i.e., the lower floor surface 98, is the same as the distance between the upper surface 36 and the lower base support surface, i.e., the lower surface 44. When the support assembly 90 and the base 22 are placed on the same plane, the upper surface 36 of the base 22 is at the same level as the support surface 96 so that the two cooperate to support a workpiece together. And because the supporting component 90 can be arranged independently of the base 22 and support the workpiece together with the base 22, the supporting component 90 can freely adjust the distance between the supporting component and the base 22 according to the length of the workpiece, so that the workpiece is conveniently supported, and the precision and the operation safety of the cutting machine 20 can be ensured. Because the support assembly 90 is independent of the base 22, the support assembly 90 can also be used with other tools.

The support assembly 90 further includes a support 94 pivotally connected to the body 92, the support 94 in this embodiment being a roller having a support surface 96. Of course, it will be appreciated by those skilled in the art that the support member of the present invention may have many forms, such as a support plate fixedly disposed on the main body and having a support plane, etc.

The body 92 includes body sidewalls 100a-d, the body sidewalls 100a-d surrounding a perimeter extending upwardly from the lower bottom surface 98 to an upper top surface 102. The main

body side walls

100a and 100c are disposed facing each other, and the main

body side walls

100b and 100d are disposed facing each other. The centerline of the body sidewall 100a and the centerline of the body sidewall 100c form a central plane about which the body 92 is symmetrically disposed.

The upper top surface 102 of the main body 92 is provided with a receiving cavity 104 for at least partially receiving the support member 94, and the support member 94 is pivotally disposed in the receiving cavity 104 about a pivot axis (not shown) having an axis X slightly lower than the upper top surface 102. And in use the axis X of the pivot axis of the support 94 is parallel to the centre line of the cutting slot 32.

Threaded holes are also provided at the four corners of the main body 92 to allow it to be secured to the floor or other support when such securing is desired.

The support assembly 90 further includes a stop plate 106 for abutting the work pieces, the stop plate 106 being mounted on the body 92 for cutting a plurality of work pieces of equal length.

The stop plate 106 has a stop surface 108 perpendicular to the support surface 96, and the stop plate 106 is pivotably arranged on the body side walls 100b and/or 100d of the body 92 about a pivot axis (not shown) perpendicular to the X-axis, and the

body side walls

100b and 100d are provided with recesses 110 matching the shape of the stop plate 106 for receiving the stop plate 106.

The stop plate 106 is rotatable between a first position in which the workpiece contacts both the stop surface 108 and the support surface 96; in the second position, the workpiece contacts only the support surface 96, and the stop plate 106 is received in the recess 110.

And because the stop plate 106 is shaped to match the recess 110, the stop plate 106 is relatively fixed relative to the body 92 in both the first and second positions without additional locking structure.

Thus, when the cutting machine 20 is operated, as shown in fig. 9, to cut a plurality of fixed-length workpieces, the stop plate 106 is first pivoted to a first position, the workpieces (not shown) are placed on the support surface 96 and the upper surface 36, and one end of the workpiece abuts against the stop surface 108, so that the plurality of fixed-length workpieces can be cut. If the cut workpiece is longer or does not require a fixed length, the stopper plate 106 can be pivoted to the second position such that the stopper plate 106 is received in the recess 110 (not shown).

Referring again to fig. 1 and 10, the support assembly 90 is equally applicable to a cutting machine to which the support leg assembly is mounted.

The base 22 is provided with a support rod 112 extending in the direction of the Y-axis perpendicular to the extending direction of the cutting groove 32. A support assembly 90 is slidably disposed on the support rods 112 for supporting a workpiece with the base 22. Here, the support rods 112 may be wood, or may be a section bar or other material that can be obtained by the user from the local source, so that transportation is not required and cost is saved.

Since the main body 92 is symmetrically disposed with respect to a central plane formed by the central lines of the main body side wall 100a and the main body side wall 100c, the support assembly 90 disposed on the support bar 112 may be disposed on one side and both sides of the base 22 as needed.

A locking mechanism 114 for locking the support rod 112 on the base 22 is arranged between the support rod 112 and the base 22. The locking mechanisms 114 are symmetrically disposed on both sides of the base 22, and one of the two locking mechanisms 114 will be described.

As shown in fig. 10, the locking mechanism 114 includes a connecting member 116 mounted on the base 22 and through which the support rod 112 passes, a locking member 132 movably disposed on the connecting member 116, and an operating knob 134 for driving the locking member 132 to move.

The connecting member 116 is substantially U-shaped and made of metal. The connecting member 116 includes two side bars 120 and a bottom bar 122 connecting the two side bars 120, and the two side bars 120 and the bottom bar 122 and the groove 124 of the base 22 form a space for the supporting bar 112 to pass through. The groove 124 at least partially receives the brace 112, and therefore the width of the groove 124 preferably corresponds to the width of the brace 112, thereby limiting the displacement of the brace 112 across its width.

The connecting member 116 further includes end rods 126 at the ends of the side rods 120 remote from the bottom rod 122 and a threaded rod (not shown) disposed on the bottom rod 122, wherein the end rods 126 extend perpendicularly from the ends of the side rods 120 along the Y-axis, and the base 22 is provided with holes 130 through which the end rods 126 pass. The connecting member 116 is inserted through the hole 130 of the base 22 via the end rod 126, thereby suspending the connecting member 116 on the base 22. The threaded rod is provided at a middle portion of the bottom bar 122 perpendicular to the bottom bar 122 and extends in a direction away from the side bars 120.

The locker 132 has a substantially U-shape formed of two side walls and a bottom, and the upper ends of the two side walls form coupling surfaces 136 for supporting the support pole 112, and is more stable than the bolt fastening since the locker 132 is in surface contact with the support pole 112. Two side walls of the locking member 132 are engaged with two sides of the bottom rod 122 of the connecting member 116, and a circular hole (not shown) for a threaded rod to pass through is formed at the bottom of the locking member 132.

Here, the operating knob 134 is a nut or a knob that engages with an external thread on a threaded rod that passes through a circular hole in the locker 132 to engage with the operating knob 134, and when the operating knob 134 is rotated, the locker 132 is pushed to move relative to the connector 116.

In detail, the supporting rod 112 is inserted through the space formed by the two side rods 120, the bottom rod 122 and the groove 124, and the operation knob 134 is rotated in the screw direction, so that the locking member 132 moves along with the operation knob 134 toward the bottom rod 122, and the engaging surface 136 of the locking member 132 pushes the supporting rod 112 to be in close contact with the bottom surface of the groove 124 of the base 22. Thus, the support rod 112 is firmly fixed between the bottom surface of the groove 124 and the mating surface 136.

The knob 134 is rotated in a direction opposite to the thread direction so that the locking member 132 moves away from the bottom bar 122 along with the knob 134, and the supporting bar 112 is released from the tight contact with the bottom surface of the recess 124. the supporting bar 112 is supported by the mating surface 136 of the locking member 132 due to the gravity, and thus the position of the supporting bar 112 relative to the base 22 can be adjusted or the supporting bar 112 can be directly removed as desired.

As shown in fig. 10, the support assembly 90 may also be secured to the support rod 112 by a locking mechanism 114a, as desired, to support the workpiece with the base 22.

Here, the locking mechanism 114a is substantially the same as the locking mechanism 114 described above, except that: the connecting member 116a of the locking mechanism 114a is inserted through a hole (not shown) in the body 92 via an end rod (not shown), thereby suspending the connecting member 116a from the body 92. The holes through which the end rods 126a can be inserted are symmetrically arranged inside the main body 92 and below the accommodating cavity 104 with respect to the Y-axis of the support rod 112.

When the main body 92 is mounted on the support bar 112, the main

body side walls

100a and 100c are substantially parallel to the Y-axis of the support bar 112 and are located on both sides of the support bar 112. The main

body side walls

100b and 100d are substantially perpendicular to the Y-axis of the support rod 112, and the main

body side walls

100b and 100d are provided with openings 138 through which the support rod 112 passes. The opening 138 at least partially receives the brace 112, and therefore the opening 138 preferably corresponds to the width of the brace 112, thereby limiting the movement of the brace 112 across its width.

The specific operation is as follows: placing the body 92 over the support pole 112 with the opening 138 of the body 92 at least partially receiving the support pole 112; the knob 134 is then rotated in a threading direction so that the locking member 132 moves with the knob 134 in a direction toward the bottom bar 122, and the mating surface 136 on the locking member 132 pushes the support bar 112 into close contact with the bottom surface of the opening 138. Thus, the main body 92 is firmly fixed to the support rod 112. Of course, if the operation knob 134 is rotated in the opposite direction of the screw threads so that the locking member 132 moves in a direction away from the bottom bar 122 with the operation knob 134, and thus the support bar 112 is out of close contact with the bottom surface of the opening 138, the position of the main body 92 and the support 94 with respect to the support bar 112 can be adjusted or the main body 92 and the support 94 can be directly removed as desired.

While the present invention has been described in its entirety and with reference to the disclosed embodiments, it is not to be considered limited thereto. Modifications and substitutions will occur to those skilled in the art, having the benefit of the teachings presented herein, and are intended to be included within the scope of the present invention.

Claims

1. A cutting machine comprises a cutting machine,

a base having an upper surface for supporting a workpiece, a lower surface disposed opposite to the upper surface, and a base sidewall connecting the upper and lower surfaces;

the saw mechanism is connected to the base and comprises a motor and a saw blade rotationally driven by the motor;

the supporting leg assembly comprises at least three supporting legs which are connected with the base and used for supporting the base;

the method is characterized in that:

the supporting legs are provided with a first positioning surface and a second positioning surface which are connected with each other and arranged at an angle;

a first matching surface and a second matching surface which correspond to the first positioning surface and the second positioning surface are arranged on the inner surface of the side wall of the base, and the first matching surface and the second matching surface form an included angle of more than 90 degrees with the upper surface;

the cutting machine further comprises a fixing device for fixing the supporting leg on the base, so that the first positioning surface and the second positioning surface are respectively in contact with the first matching surface and the second matching surface.

2. The cutting machine according to claim 1, characterized in that: the base is provided with a limiting surface opposite to the first matching surface and the second matching surface, and the supporting legs are provided with limiting edges abutted against the limiting surface.

3. The cutting machine according to claim 2, characterized in that: the sum of the angle formed between the limiting surface and the upper surface and the angle between the first matching surface and the upper surface is larger than 180 degrees.

4. The cutting machine according to claim 1, characterized in that: the fixing device comprises a locking element and an operating piece, wherein one end of the locking element penetrates through the supporting leg and the side wall of the base, the operating piece is matched with the locking element, and the locking element can slide along the extending direction of the guide groove.

5. The cutting machine according to claim 4, characterized in that: the supporting leg comprises a first side plate, a second side plate and a supporting plate, wherein the first side plate and the second side plate are mutually connected and are arranged at an angle, the supporting plate is connected with the first side plate and the second side plate, and a through hole for the locking element to pass through is formed in the supporting plate.

6. The cutting machine according to claim 1, characterized in that: the supporting leg is provided with a matching part matched and connected with the base and a supporting part connected with the matching part, and the cross section of the matching part is gradually increased from one end matched and connected with the base to the other end matched and connected with the supporting part.

7. The cutting machine according to claim 6, characterized in that: the supporting part comprises one end connected with the matching part and the other end arranged oppositely, wherein the cross section of the supporting part is gradually reduced from one end to the other end.

8. The cutting machine according to claim 1, characterized in that: the base is provided with a support rod, and the support rod is provided with a support component which is used for supporting the workpiece together with the base.

9. The cutting machine according to claim 8, characterized in that: the supporting rod and the base are provided with a locking mechanism therebetween, and the supporting rod is directly arranged on the base through the locking mechanism.

10. The cutting machine according to claim 9, characterized in that: the locking mechanism comprises a connecting piece arranged on the base, a locking piece movably arranged on the connection and an operating button for driving the locking piece to move, wherein the connecting piece and a groove on the base form a space for the supporting rod to pass through, the locking piece comprises a matching surface for supporting the supporting rod, and the rotating operating button can cause the supporting piece to be fixed between the groove and the matching surface.