TWI783542B - Tool seat quick release structure - Google Patents

Abstract

The quick-release structure of the present invention includes: a turning tool is provided with a cutter bar, and the cutter bar has two sides, two sets of curved holes and two rows of notches, each row of notches is formed on the side of the tool bar, so that the curved holes are connected to the The side of the cutter bar; and two sets of quick-release parts, each quick-release part includes: an eccentric part, and a working surface and a non-working surface are connected on the outer surface of the eccentric part in the circumferential direction. The turning tool is used in a tool holder that connects two vertical walls on either side of a base for receiving the tool holder. When the working surface is inside the curved surface hole, the non-working surface faces the gap but does not exceed the side of the tool holder, allowing the tool holder to enter and exit between the two vertical walls. When the non-working surface is in the curved surface hole, the working surface is exposed on the side of the cutter bar through the gap and can press the inner side of the vertical wall. In this way, the eccentric portion can be pressed against the inner side of the vertical wall by about 1/2 turn relative to the tool holder, thereby shortening the assembly time of the tool holder and the turning tool.

Description

Tool seat quick release structure

The invention relates to assembly technology in the field of machinery, in particular to a quick-release structure, which is applied to the installation of knives and knife holders.

In the mechanical field, it is common to install a tool holder on a turret, a tool magazine or a lathe, and the tool holder is assembled with a turning tool to perform cutting operations on a workpiece, such as outer diameter turning or inner diameter turning.

The known assembly technology is divided into two structures: one structure is non-detachable, for example, the turning tool and the tool holder are designed as one; the other structure is combined, for example, a screw assembly combines the tool holder and the turning tool together.

A common screw connection assembly uses a section of external thread to lock a section of internal thread, so that the tool holder and the turning tool are combined. However, when the two inner and outer thread sections turn to the bottom, the screwed assembly can be locked. If it is not locked to the end, the screwed assembly is in an untightened loose state, and an effective assembly function cannot be obtained. As such, the threaded assembly wastes a lot of assembly time.

Therefore, how to improve the technology for assembling the turning tool in the tool holder has become an urgent problem to be solved in the present invention.

In view of this, the inventor of this case proposes a quick-release structure, the main purpose of which is to use an eccentric structure, shorten the assembly time, and quickly complete the assembly operation of the tool holder and the turning tool.

Due to the achievement of the above purpose, the quick release structure of the present invention includes: A turning tool has a tool holder, which has two sides, two sets of curved holes and two rows of notches, each row of notches forms the side of the tool holder, so that the curved holes are connected to the side of the tool holder through the notches; and two sets of quick release Each quick-release part includes: an eccentric part, and a working surface and a non-working surface connected on the outer surface of the eccentric part in the circumferential direction.

When the eccentric part is installed in the curved surface hole, the eccentric part rotates around an axis line, a longer distance from the axis line to the working surface is greater than a shorter distance from the axis line to the non-working surface, and the working surface The non-working surface and the non-working surface are moved to the curved surface in turn, so that the non-working surface is facing the gap but does not exceed the side of the tool holder, or the working surface is exposed to the side of the tool holder through the gap.

The present invention also includes: a knife seat, which connects two vertical walls on both sides of a bottom, and is used for receiving the knife rod. When the working surface is inside the curved surface hole, the non-working surface faces the gap but does not exceed the side of the tool holder, allowing the tool holder to enter and exit between the two vertical walls. When the non-working surface is in the curved surface hole, the working surface is exposed on the side of the cutter bar through the gap and can press the inner side of the vertical wall.

In this way, in the quick release structure of the tool holder of the present invention, the eccentric portion can be pressed against the inner side of the vertical wall by about 1/2 turn relative to the tool holder, shortening the assembly time of the tool holder and the turning tool, and quickly completing the assembly operation.

In order to make the purpose, structure, features and advantages of the present invention easy to understand, one or more preferred embodiments will be described in detail as follows in conjunction with the attached drawings.

10: knife tower

11: Assembly surface

12: Combination hole

13: Central axis

20: Knife seat

21: Bottom

22: Standing wall

23: Installation space

24: Fasteners

25: hole

26: inside

30: turning tool

31: cutting parts

32: blade

33: head

34: Joint

35: Connector

36: Arbor

36a: top surface

36b: bottom surface

36c: side

36d: end face

37: curved face

37a, 38a, 41a: radius

38: screw hole

39: Gap

40: quick release parts

41: screw

41b: axis line

42: Eccentric part

42a: work surface

42b: Longer distance

42c: Non-working surface

42d: short distance

43: Drive Department

44: Tool

a, b, c: contact points

d: area

h: height difference

Figure 1 draws the corresponding relationship between turning tool, tool holder and turret during installation.

Figure 2 depicts the specific structure of the turning tool from a bird's-eye view.

Figure 3 shows the corresponding relationship between the turning tool and the quick release structure.

Figure 4 shows the tool block holding the turning tool together with the turret.

Figure 5 draws the pairing relationship between the tool holder and the turning tool before the assembly of the quick release structure.

Figure 6 cuts the tool holder along the line A-A in Figure 5 to show the state before the action of the quick release structure.

Figure 7 draws the pairing relationship of the quick release structure after the tool holder and the turning tool are assembled.

Figure 8 cuts the tool holder along the line B-B in Figure 7 to show the state of the quick release structure.

Figure 9 depicts the area shown by the dotted line enclosed by the single set of quick release parts on the tool holder.

Fig. 1 is a perspective view, expressing that a machine (or equipment) is installed with a turning tool 30 through a tool holder 20 . In this embodiment, the machine described is a turret 10 (or a tool magazine), and the turret 10 is a polygon with a plurality of assembly surfaces 11 and a plurality of coupling holes 12 around the polygon. Along the length direction of a central axis 13 passing through the turret 10 , a part of the coupling hole 12 is formed on an end surface (not numbered) of the turret 10 . Along the vertical direction of the central axis 13 , other coupling holes 12 are distributed on each assembly surface 11 . Each coupling hole 12 is connected with a fastener 24, such as a bolt.

In the first figure, the knife seat 20 is a U-shaped body, and two vertical walls 22 of the U-shaped body are connected to a bottom 21 on both sides. The two separated vertical walls 22 cooperate with the bottom 21 to enclose an installation space 23 , which is equivalent to the inner space of the tool holder 20 . Each vertical wall 22 forms two holes 25 , the holes 25 are aligned with the coupling holes 12 , and the fasteners 24 are guided to fix the tool holder 20 on the assembly surface 11 of the turret 10 .

In some embodiments, the tool holder 20 is positioned on the end surface of the turret 10 by the fastener 24, which is also within the allowable scope of the present invention.

In addition, the turning tool 30 is composed of a cutting element 31 and a tool holder 36 . The cutting element 31 is composed of a blade 32 , a head 33 and a connecting portion 34 , and the blade 32 can be installed at one end of the head 33 replaceably. Described cutter bar 36 is a rectangle, and this rectangle has a A top surface 36a, a bottom surface 36b, two side surfaces 36c and two end surfaces 36d, the end surface 36d of the tool bar 36 is connected with the other end of the head 33 through the connecting portion 34. A joint 35 is arranged on the bottom surface 36 b of the tool shank 36 , which guides a fluid (eg coolant) through the turning tool 30 to the insert 32 .

From the bird's-eye view of FIG. 2 , the tool holder 36 has two sets of curved holes 37 , two sets of screw holes 38 and two rows of notches 39 . Along the length direction of an axis (not labeled), the curved surface hole 37 is connected with the screw hole 38 to form a concentric circle structure. Because a radius 37a of the curved hole 37 is greater than a distance from the axis to the side 36c, the notch 39 is formed on the side 36c of the knife bar 36, so that the curved hole 37 is connected to the side 36c of the knife bar 36 through the notch 39. There is another radius 38a from the axis to the wall of the screw hole 38 , which is smaller than the distance from the side 36c of the cutter bar 36 to the axis, so the screw hole 38 is not directly connected to the notch 39 .

It is not difficult to know from FIG. 3 that the curved surface hole 37 is inserted into the top surface 36 a of the knife rod 36 , and is connected to the bottom surface 36 b of the knife rod 36 via the screw hole 38 .

In addition, the two sets of quick release parts 40 can be installed in the curved surface hole 37 with the screw holes 38 , and together form a quick release structure realized on the tool bar 36 . Each quick release part 40 has an eccentric part 42, and a screw rod 41 extends outward from the bottom surface of the eccentric part 42, and the two are designed as one. When the screw rod 41 maintains a screw connection with the screw hole 38 , the eccentric portion 42 (or the quick release part 40 ) is rotatably mounted on the curved hole 37 of the tool rod 36 .

As shown in FIG. 4, no matter whether the tool holder 36 is received between the two vertical walls 22, or the tool holder 36 is inserted into the installation space 23 of the tool holder 20, the tool holder 20 enables the turning tool 30 and the turret 10 to have a combination effect. .

In FIG. 5 , the quick release part 40 maintains a threaded relationship with the knife rod 36 and supports the eccentric part 42 inside the curved surface hole 37 . In this embodiment, the eccentric part 42 has a driving part 43, and the driving part 43 is a hexagonal groove. In some embodiments, the driving part 43 is a polygonal cylinder, which is also within the allowable scope of the present invention.

From the cross-sectional view of FIG. 6 , the screw rod 41 maintains a screwed relationship with the screw hole 38 , and obtains the effect of installing the eccentric portion 42 in the curved hole 37 . Draw a virtual axis line 41b through the center of the screw rod 41, a radius 41a from the axis line 41b to the outer surface of the screw rod 41 is roughly equal to the radius of the screw hole 38, so the eccentric portion 42 is opposite to the axis line 41b in the curved surface hole 37 The knife bar 36 rotates.

According to the circumferential direction, the outer surface of the eccentric portion 42 forms a connected working surface 42 a and a non-working surface 42 c. A longer distance 42b from the working surface 42a to the axis 41b is greater than a shorter distance 42d from the axis 41b to the non-working surface 42c, but less than the radius 37a of the curved surface hole 37, so that the working surface 42a is on the curved surface. In the face hole 37 , the non-working surface 42 c faces the notch 39 and does not exceed the side surface 36 c of the cutter bar 36 . At this moment, the inner side 26 of the vertical wall 22 does not contact the side 36c of the tool bar 36, so the free turning tool 30 can enter and exit the installation space 23 of the tool holder 20 (see FIG. 4).

In addition, the drive portion 43 is formed on the top surface of the eccentric portion 42 along the longitudinal direction of the axis line 41b. As shown in FIG. 7 , the drive part 43 receives a form-fitting tool 44 , such as a hexagonal wrench. The tool 44 drives the eccentric part 42 (or quick release part 40) to rotate about 1/2 circle relative to the tool bar 36 in the curved surface hole 37, until the inner side 26 of the pressing vertical wall 22 is pressed, and the turning tool 30 is fixed on the tool holder 20.

It is not difficult to find from Fig. 8 that according to the driving direction of the tool 44, the non-working surface 42c of the eccentric part 42 is in the curved surface hole 37, and the working surface 42a is exposed to the side 36c of the tool bar 36 through the notch 39, and through the torque mode Applying a force to the inner side 26 of the upstanding wall 22 produces a compressive action.

Finally, see Fig. 9, under the cooperation of the screw rod and the screw hole, the height of the eccentric part 42 on the turning tool 30 can be adjusted so that the group of quick release parts 40 are not on the same horizontal line.

In this embodiment, the height of the quick release parts 40 in the middle is adjusted so that there is a height difference h between the whole set of quick release parts 40 . The group of quick release parts 40 is pressed against the vertical wall to form three contact points a, b, c to form an area d, one side of the area d is formed by two contact points a, b, and two contact points b, c Connect to form another edge, and connect two contact points a and c to form a third edge. In this way, the area d is similar to a triangle, which helps the turning tool 30 not to shake easily in the tool holder 20 and achieves the purpose of stabilizing the blade 32 .

20: Knife seat

21: Bottom

22: Standing wall

23: Installation space

26: inside

30: turning tool

31: cutting parts

32: blade

33: head

34: Joint

36: Arbor

36a: top surface

36c: side

36d: end face

37: curved face

39: Gap

40: quick release parts

42: Eccentric part

43: Drive Department

44: Tool

Claims (7)

A quick-release structure for a tool seat, comprising: A turning tool (30) is equipped with a tool bar (36), and this tool bar (36) has two sides (36c), two groups of curved surface holes (37) and two rows of notches (39), and each row of notches (39) is formed on the side (36c) of the shank (36) such that the curved hole (37) is connected to the side (36c) of the shank (36) via the notch (39); and Two sets of quick release parts (40), each quick release part (40) includes: an eccentric part (42), a work surface (42a) and a non work work surface connected on the outer surface of the eccentric part (42) in the circumferential direction face (42c); When the eccentric part (42) is installed in the curved surface hole (37), the eccentric part (42) rotates around an axis line (41b), and a longer distance from the axis line (41b) to the work surface (42a) (42b), a shorter distance (42d) from the axis line (41b) to the non-working surface (42c), the working surface (42a) and the non-working surface (42c) are moved to the curved surface hole (37) in turn, Make the non-working surface (42c) face the notch (39) but not beyond the side (36c) of the knife bar (36), or allow the working surface (42a) to be exposed to the side of the knife bar (36) through the breach (39) ( 36c). The quick release structure of the knife seat as described in claim 1, wherein the curved surface hole (37) sinks into a top surface (36a) of the knife bar (36), and is connected via a screw hole (38) with a smaller radius (38a). To a bottom surface (36b) of the cutter bar (36), the screw hole (38) is not directly connected to the notch (39). The quick release structure of the tool holder as described in claim 2, wherein the quick release part (40) also has a screw (41), along the length direction of the axis line (41b), the screw (41) and the eccentric part (42) is designed as one, and can be screwed into the screw hole (38) of the tool bar (36). The quick release structure of the tool seat according to claim 3, wherein the screw (41) cooperates with the screw hole (38) to adjust the height drop of the eccentric part (42), and there is at least one height drop ( h). The quick release structure of the tool seat according to claim 1, wherein the eccentric part (42) has a drive part (43) that receives an external force, and the drive part (43) along the length direction of the axis (41b) Formed on the top surface of the eccentric part (42). The quick release structure of the tool seat according to claim 1, wherein the tool bar (36) also has a joint (35) for guiding liquid through the turning tool (30). The quick release structure of the knife seat as described in any one of the request items 1 to 6 also includes: a knife seat (20), connecting two vertical walls (22) on both sides of a bottom (21) for receiving the knife rod(36); When the active surface (42a) is inside the curved surface hole (37), the non-active surface (42c) is facing the gap (39) but does not exceed the side (36c) of the knife bar (36), allowing the knife bar (36) to go in and out of both sides. Between two vertical walls (22); When the non-work surface (42c) is inside the curved surface hole (37), the work surface (42a) is exposed to the side (36c) of the knife bar (36) through the gap (39) and can press the inboard of the vertical wall (22) ( 26).

Images