Holders and machine tools

Abstract

To provide a holder which can be used with different tools, and to provide a machine tool.SOLUTION: A holder includes: a holder body for holding a tool; multiple candidate holes provided at the holder body; and a positioning hole making mechanism which causes a candidate hole set as a position hole for supporting a pin which positions the tool relative to the holder body when the tool is held by the holder body to function as the positioning hole.SELECTED DRAWING: Figure 9

Description

[Technical Field]

[0001] The present specification relates to a holder and a machine tool. [Background technology]

[0002] A conventional tool mounting device is disclosed in, for example, Patent Document 1. In this conventional tool mounting device, a first narrow keyway and a second wider keyway are provided on one end face of a tool holder, and a first fixed key that enters the first keyway and a second fixed key that enters the second keyway are disposed on an end face of a spindle. As a result, the phase of the tool holder, i.e., the tool, is determined by combining the keyway and the fixed key. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 48-88562 Summary of the Invention [Problem to be solved by the invention]

[0004] In the conventional tool mounting device, a pre-fixed keyway and a fixed key are provided to match the phase of the tool held in the tool holder. While this allows the phase of each tool to be determined and held with high precision, the tool holder cannot be shared by multiple tools, and a dedicated tool holder must be manufactured and used for each tool. Therefore, with the conventional tool mounting device, the number of tool holders to be manufactured increases, which may result in increased costs for manufacturing and maintenance, and the need to manage the increased number of individual tool holders is cumbersome.

[0005] The present specification aims to provide a holder and a machine tool that can be shared by different tools. [Means for solving the problem]

[0006] This specification discloses a holder comprising a holder body that holds a tool, a plurality of candidate holes provided in the holder body, and a positioning hole mechanism that causes the candidate holes that are set as positioning holes that support pins that determine the position of the tool relative to the holder body when the tool is held in the holder body to function as positioning holes.

[0007] According to this, by using a positioning hole mechanism that causes candidate holes from among a plurality of candidate holes provided in the holder body to function as positioning holes, the holder body of the holder can hold different tools. In other words, by using the positioning hole mechanism for the positioning holes set from the candidate holes, the holder can be shared by different tools. Therefore, it is possible to reduce the number of holders to be manufactured, which results in reduced costs required for manufacturing and maintenance. Furthermore, holder standardization can be achieved, making it easier to manage individual holders. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a schematic perspective view showing an entire machine tool. [Figure 2] FIG. 1 is a diagram for explaining a configuration of a machine tool. [Figure 3] FIG. 4 is a partial cross-sectional view illustrating the configuration of a holder. [Figure 4] FIG. 4 is a partial cross-sectional view illustrating the configuration of a pin support member. [Figure 5] 10A and 10B are diagrams for explaining the configuration of a filling member. [Figure 6] 10A and 10B are diagrams for explaining the configuration of the tool on the right side, which is formed symmetrically. [Figure 7] 10A and 10B are diagrams for explaining the configuration of the left tool formed symmetrically. [Figure 8] 10 is a diagram illustrating a state in which pin support members are screwed into positioning holes and hole filling members are screwed into non-positioning holes in a holder. FIG. [Figure 9]9 is a partial cross-sectional view for explaining a case where the tool shown in FIG. 6 is attached to the holder shown in FIG. 8. FIG. [Figure 10] 10 is a diagram illustrating a state in which pin support members are screwed into positioning holes and hole filling members are screwed into non-positioning holes in a holder. FIG. [Figure 11] 11 is a partial cross-sectional view for explaining a case where the tool shown in FIG. 7 is attached to the holder shown in FIG. 10. FIG. [Figure 12] 10A and 10B are diagrams illustrating a pin support member according to a first modified example. [Figure 13] 13 is a partial cross-sectional view for explaining a case where a tool is attached to a holder to which the pin support member of FIG. 12 is screwed. FIG. [Figure 14] FIG. 10 is a diagram illustrating a holder according to a second modified example. [Figure 15] 10A and 10B are diagrams illustrating a holder according to a third modified example. [Figure 16] 10A and 10B are diagrams illustrating a holder according to a fourth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0009] The holder and the machine tool will be described below with reference to the drawings. In this embodiment, a case will be described in which a tool is held via a holder in a machine tool that is a front two-spindle type lathe.

[0010] 1. Machine tools 10 1 and 2, machine tool 10, which is a front twin-spindle type lathe, includes a bed 20, a pair of left and right headstocks 30, a pair of left and right tool rests 40, and a pair of left and right slides 50. Machine tool 10 is formed by connecting two lathes that are symmetrical to each other.

[0011] The bed 20 comprises a bed body 21, a pair of left and right headstock mounting portions 22, a pair of left and right slide mounting portions 23, and a pair of front and rear connecting members 24. The bed body 21 comprises a pair of left and right bed segments 21R, 21L. That is, the bed body 21 is divided into left and right halves, which are connected to each other by a pair of front and rear connecting members 24 (only the front side is shown in Figures 1 and 2).

[0012] The pair of left and right headstock mounting portions 22 are disposed on the upper surfaces of the bed segments 21R and 21L, respectively. That is, the right headstock mounting portion 22 and the left headstock mounting portion 22 are disposed symmetrically.

[0013] The pair of left and right slide mounting portions 23 are arranged outward in the left-right direction from the pair of left and right headstock mounting portions 22. As will be described later, the tool rest 40 is attached to the upper side of the slide portion 50, and therefore the pair of left and right slide mounting portions 23 are arranged below the pair of left and right headstock mounting portions 22. The right slide mounting portion 23 is inclined toward the right headstock 30 with respect to the direction in which the headstock 30 and the tool rest 40 are aligned. The left slide mounting portion 23 has a configuration similar to that of the right slide mounting portion 23. The right slide mounting portion 23 and the left slide mounting portion 23 are arranged so as to be symmetrical in the left-right direction.

[0014] The pair of left and right headstocks 30 are arranged above the headstock attachment portion 22 so that their respective rotation axes A1 are parallel to each other. The right headstock 30 is equipped with a spindle 31 and a spindle motor 32 that rotates the spindle 31. A workpiece W to be machined is attached to the tip of the spindle 31 by a chuck (not shown). The left headstock 30 has a similar configuration to the right headstock 30. The right headstock 30 and the left headstock 30 are arranged symmetrically.

[0015] The pair of left and right tool rests 40 are arranged above a pair of left and right slide sections 50 (described later) so that the rotation axis A2 of each is parallel to the rotation axis A1 of the main shaft 31. This allows the tool rests 40 to move in the front-to-rear and left-to-right directions. The right tool rest 40 includes a tool rest main body 41 and a turret 42. The left tool rest 40 has the same configuration as the right tool rest 40. The right tool rest 40 and the left tool rest 40 are arranged symmetrically.

[0016] The tool table body 41 is disposed on the upper surface of a second slide 53 (described later) of the slide portion 50. The turret 42 is disposed in front of the tool table body 41 so that the rotation axis A2 is parallel to the rotation axis A1 of each spindle 31. The turret 42 can be rotated by a predetermined angle by the tool table body 41. A plurality of tools 80 can be attached to the turret 42 via holders 70 (described later).

[0017] The pair of left and right slide portions 50 are each disposed above the slide mounting portion 23. The right slide portion 50 includes a first guide 51, a common slide 52, and a second slide 53. The left slide portion 50 has the same configuration as the right slide portion 50. The right slide portion 50 and the left slide portion 50 are disposed symmetrically.

[0018] The first guide 51 is disposed on the slide mounting portion 23. The first guide 51 extends in the front-rear direction. The common slide 52 includes a first slide 521 and a second guide 522. The first slide 521 is slidable in the front-rear direction along the first guide 51. The second guide 522 is disposed above the first slide 521. The second guide 522 extends in the left-right direction. The second slide 53 is slidable in the left-right direction along the second guide 522.

[0019] 2. Holder 70 The holder 70 is attached to the symmetrically arranged turrets 42 of the machine tool 10, and holds a tool 80 for machining (cutting) a workpiece W mounted on the symmetrical headstocks 30. The tool 80 is formed symmetrically (in a mirror image relationship) as described below, corresponding to its attachment to the symmetrical turrets 42 (see FIGS. 6 and 7).

[0020] As shown in Fig. 3, the holder 70 has a holder body 701 that holds the tool 80. The holder body 701 is formed, for example, in a cylindrical shape. Furthermore, the holder 70 has a plurality of candidate holes 702 formed on the end surface of the holder body 701 that faces the tool 80. In this embodiment, two candidate holes 702 are formed in the holder body 701. Furthermore, the holder 70 has an assembly hole 703 formed on the side surface of the holder body 701 to fix the holder 70 to the turret 42.

[0021] Here, the candidate holes 702 are holes formed in advance to determine the phase (rotational position) of the different tools 80 (symmetrical tools 80R and 80L, which will be described later) about the axis A3 of the tool 80 relative to the holder 70 (holder body 701), or the phase (rotational position) relative to the spindle 31 (or the workpiece W attached to the spindle 31). Note that the candidate holes 702 are also used to encourage the worker to assemble the different tools 80 (symmetrical tools 80R and 80L) to the holder 70 in the correct positional relationship.

[0022] 2-1. Positioning hole mechanism and non-positioning hole mechanism In this embodiment, a pin support member 71 serving as a positioning hole mechanism and a hole filling member 72 serving as a non-positioning hole mechanism are assembled to each of two candidate holes 702 formed in a holder body 701 of the holder 70. As will be described later, the pin support member 71 causes the candidate holes 702, which support pins 83 that determine the position of the tool 80 relative to the holder body 701 when the tool 80 is held in the holder body 701, to function as positioning holes 704 (see FIG. 8). The hole filling member 72 causes the candidate holes 702, which do not support pins 83 unlike the positioning holes 704, to function as non-positioning holes 705 (see FIG. 8).

[0023] 4, the pin support member 71 has an insertion hole 711 through which the pin 83 is inserted to support the pin. The pin support member 71 also has a threaded portion 712 that is screwed into a candidate hole 702, i.e., a positioning hole 704, of the holder main body 701. The pin support member 71 supports the pin 83 fixed to the tool 80 by inserting it into the insertion hole 711 in a state where it is screwed into the positioning hole 704 of the candidate holes 702 provided in the holder main body 701.

[0024] 5 , the hole filling member 72 has a hole filling portion 721 that prevents the pin 83 from being inserted therethrough. The hole filling member 72 also has a threaded portion 722 that is screwed into a candidate hole 702, i.e., a non-positioning hole 705, of the holder main body 701. The hole filling member 72 blocks the non-positioning hole 705 (candidate hole 702) when screwed into the non-positioning hole 705 of the candidate holes 702 provided in the holder main body 701. As a result, for example, in a situation where the mounting posture (orientation) of the tool 80 to the holder 70 (holder main body 701) is incorrect and the pin 83 attempts to be inserted toward the non-positioning hole 705, the hole filling member 72 prevents the pin 83 from being inserted into the non-positioning hole 705.

[0025] 3.Tools 80 As shown in Figures 6 and 7, the tools 80 correspond to the left and right symmetrical turrets 42, and are formed to be symmetrical (i.e., mirror images of each other). Here, the tool 80 shown in Figure 6 is, for example, the right tool 80R attached to the right turret 42 in Figure 2 via the holder 70. Also, the tool 80 shown in Figure 7 is, for example, the left tool 80L attached to the left turret 42 in Figure 2 via the holder 70. In the following description, when there is no need to distinguish between the right and left sides, they will simply be referred to as the tool 80.

[0026] The tool 80R has a cutting edge 82 formed on the right side of the tool body 81 in Fig. 6 (on the left side in Fig. 2 where the tool is attached to the machine tool 10 via the holder 70), and a pin 83 is erected on the upper side in a direction perpendicular to the plane of the page in Fig. 6. The tool 80R also has a plurality of assembly holes 84 (four in Fig. 6) formed in the tool body 81, through which bolts (not shown) for fixing the tool to the holder 70 are inserted.

[0027] The tool 80L is formed to be bilaterally symmetrical (mirror image) with the tool 80R, and has a cutting edge 82 formed on the left side of the tool body 81 in Fig. 7 (the right side in Fig. 2 where the tool is attached to the machine tool 10 via the holder 70), and a pin 83 is erected on the lower side in Fig. 7 in a direction perpendicular to the page. Furthermore, the tool 80L has a plurality of assembly holes 84 (four in Fig. 7) formed in the tool body 81, through which bolts (not shown) for fixing the tool to the holder 70 are inserted.

[0028] 4. Fixing the tools 80R and 80L to the holder 70 Next, a description will be given of how the tools 80R and 80L, which are formed symmetrically on the left and right, can be fixed to the holder 70. First, a description will be given of the case where the tool 80R is fixed to the right turret 42 shown in FIG.

[0029] When tool 80R is attached to machine tool 10 via holder 70, cutting edge 82 is located on the left side facing spindle 31, i.e., a pin 83 is fixed to the upper side of tool body 81 in the vertical direction so that tool 80R is positioned relative to holder 70 (see FIG. 6). Therefore, when tool 80R is to be appropriately fixed via holder 70 in right-side turret 42, it is necessary to position tool 80R by inserting pin 83 that protrudes from the upper side of tool 80R toward holder 70.

[0030] 8, when the tool 80R is attached to the right turret 42, of the two candidate holes 702 provided in the holder body 701 along the vertical direction, the upper candidate hole 702 is set as the positioning hole 704, and the lower candidate hole 702 is set as the non-positioning hole 705. As a result, the pin support member 71 is screwed into the upper positioning hole 704, and the hole filling member 72 is screwed into the lower non-positioning hole 705.

[0031] 9, when the tool 80R is fixed to the holder 70, the pin 83 fixed to the tool body 81 of the tool 80R is inserted through the insertion hole 711 of the pin support member 71 and supported, thereby appropriately determining the position (phase or rotational position) of the tool 80R. As a result, the tool 80R is appropriately fixed to the right turret 42 via the holder 70. Here, when the tool 80R is fixed to the holder 70, the hole filling member 72 is screwed into the lower non-positioning hole 705. Therefore, even if the tool 80R is rotated 180 degrees, i.e., the pin 83 is positioned on the lower side, the hole filling member 72 prevents the pin 83 from being inserted. Therefore, the tool 80R is prevented from being attached to the right turret 42 via the holder 70 in an incorrect position (phase or rotational position).

[0032] Next, referring to FIG. 2, a case where the tool 80L is fixed to the left turret 42 via the holder 70 will be described.

[0033] When the tool 80L is attached to the machine tool 10 via the holder 70, the cutting edge 82 is located on the right side facing the spindle 31, that is, a pin 83 is fixed to the lower side of the tool body 81 in the vertical direction so that the tool 80L is positioned relative to the holder 70 (see FIG. 7). Therefore, when the tool 80L is to be appropriately fixed via the holder 70 in the left turret 42, it is necessary to position the tool 80L by inserting the pin 83 that protrudes from the underside of the tool 80L toward the holder 70.

[0034] 10, when the tool 80L is attached to the left turret 42, of the two candidate holes 702 provided in the holder body 701 along the vertical direction, the upper candidate hole 702 is set as the non-positioning hole 705, and the lower candidate hole 702 is set as the positioning hole 704. As a result, the hole filling member 72 is screwed into the upper non-positioning hole 705, and the pin support member 71 is screwed into the lower positioning hole 704.

[0035] 11 , when the tool 80L is fixed to the holder 70, the pin 83 fixed to the tool body 81 of the tool 80L is inserted through the insertion hole 711 of the pin support member 71 and supported, thereby appropriately determining the position (phase or rotational position) of the tool 80L. As a result, the tool 80L is appropriately fixed to the left turret 42 via the holder 70. Here, when the tool 80L is fixed to the holder 70, the hole filling member 72 is screwed into the upper non-positioning hole 705. Therefore, even if the tool 80L is rotated 180 degrees, i.e., the pin 83 is positioned on the upper side, the hole filling member 72 prevents the pin 83 from being inserted. Therefore, the tool 80L is prevented from being attached to the left turret 42 via the holder 70 in an incorrect position (phase or rotational position).

[0036] In this embodiment, two candidate holes 702 are provided in a holder body 701 of the holder 70, and the positioning hole 704 and the non-positioning hole 705 are changed depending on the tools 80R and 80L. A pin support member 71 is screwed into the positioning hole 704 as a positioning hole conversion mechanism, and a hole filling member 72 is screwed into the non-positioning hole 705 as a non-positioning hole conversion mechanism. Therefore, in this embodiment, the non-positioning hole 705 is determined by screwing the pin support member 71 into the positioning hole 704, so the pin support member 71 also functions as a non-positioning hole conversion mechanism. Furthermore, in this embodiment, the positioning hole 704 is determined by screwing the hole filling member 72 into the non-positioning hole 705, so the hole filling member 72 also functions as a positioning hole conversion mechanism.

[0037] As can be understood from the above explanation, the holder 70 comprises a holder body 701 that holds the tool 80 (tool 80R, 80L), a plurality of candidate holes 702 provided in the holder body 701, and a pin support member 71 that serves as a positioning hole mechanism that causes the candidate holes 702 set as positioning holes 704 that support pins 83 that determine the position of the tool 80 relative to the holder body 701 when the tool 80 is held in the holder body 701 to function as positioning holes 704.

[0038] According to this, by using the pin support member 71 that causes the candidate holes 702, among the plurality of candidate holes 702 provided in the holder body 701, to function as positioning holes 704, the holder body 701 of the holder 70 can hold different tools 80 (tools 80R, 80L). In other words, by using the pin support member 71 as a positioning hole mechanism for the positioning holes 704 set from the candidate holes 702, the holder 70 can be shared by different tools 80 (tools 80R, 80L). Therefore, it is possible to reduce the number of holders 70 to be manufactured, which results in reduced costs for manufacturing and maintenance. Furthermore, by realizing standardization of the holders 70, individual holders 70 can be easily managed.

[0039] 5. Variations 5-1. First variant In the above-described embodiment, the pin 83 is fixed to the tool 80, and the pin support member 71, which has an insertion hole 711 through which the pin 83 is inserted, is screwed into the positioning hole 704 of the holder 70. As a result, the pin 83 fixed to the tool 80 is inserted through the insertion hole 711 of the pin support member 71 and supported, thereby positioning the position of the tool 80 (the phase or rotation position around the axis A3).

[0040] Incidentally, as the positioning hole mechanism to be screwed into the positioning hole 704, instead of the pin support member 71 having the insertion hole 711 described above, it is also possible to use a pin support member 73 having an erected pin 731 as shown in Fig. 12. The pin support member 73 has the pin 731 that determines the position (phase or rotation position) of the tool 80, and a threaded portion 732 that is screwed into the candidate hole 702 of the holder body 701, i.e., the positioning hole 704.

[0041] 13, the pin support member 73 is threaded into a positioning hole 704 among the candidate holes 702 provided in the holder main body 701, and the pin 731 is inserted into the pin insertion hole 85 provided in the tool 80 (tool 80R). As a result, the position (phase or rotational position) of the tool 80 can be determined when the tool 80 is attached to the holder 70, similar to the above-described embodiment.

[0042] 5-2. Second variant In the above-described embodiment and the first modified example, two candidate holes 702 are provided in the holder body 701 of the holder 70. Then, depending on the tool 80 (tools 80R, 80L) to be attached to the holder 70, each candidate hole 702 is determined to be a positioning hole 704 or a non-positioning hole 705, and the pin support member 71 is screwed into the positioning hole 704, and the hole filling member 72 is screwed into the non-positioning hole 705.

[0043] The number of candidate holes 702 provided in the holder body 701 is not limited to two, and as shown in FIG. 14 , three or more candidate holes 702 can be provided, and each candidate hole 702 can be determined as a positioning hole 704 or a non-positioning hole 705. In this case, as shown in FIG. 14 , the candidate holes 702 are arranged along the circumferential direction on the circumference of concentric circles. Then, it is possible to selectively determine the positioning hole 704 or the non-positioning hole 705 from among the candidate holes 702 arranged along the circumferential direction. This not only achieves the same effects as the above-described embodiment, but also makes it possible to adjust and position the position (phase or rotational position) of the tool 80 (tools 80R and 80L) around the axis A3 relative to the holder body 701 by screwing the pin support member 71 into an appropriately selected positioning hole 704.

[0044] 14, in the second modified example, hole filling members 72 are screwed into all of the non-positioning holes 705, which are candidate holes 702 other than the positioning hole 704. As a result, even if the tool 80 (tools 80R, 80L) is rotated by mistake, for example, the hole filling members 72 prevent the pin 83 from being inserted, thereby preventing the tool 80 (tools 80R, 80L) from being erroneously attached to the holder 70.

[0045] 5-3.Third modified example In the second modified example described above, a pin support member 71 having an insertion hole 711 is screwed into the positioning hole 704 to insert the pin 83 fixed to the tool 80. Then, hole filling members 72 are screwed into all of the non-positioning holes 705 to prevent the pin 83 fixed to the tool 80 from being mistakenly inserted into the non-positioning holes 705 other than the positioning hole 704.

[0046] Incidentally, as in the case of the first modified example described above, when the tool 80 is provided with a pin insertion hole 85 and a pin support member 73 having a pin 731 to be inserted into the pin insertion hole 85 is used, it is possible to omit screwing the hole filling member 72 into the non-positioning hole 705, as shown in Fig. 15. That is, in the case of the third modified example, the position (phase or rotation position) of the tool 80 can be determined by screwing only the pin support member 73, which is a positioning hole mechanism having a pin 731 protruding toward the tool 80, to the holder 70 and inserting the pin 731 into the pin insertion hole 85.

[0047] Furthermore, by screwing the pin support member 73, which is a positioning hole conversion mechanism, into the positioning hole 704, the candidate holes 702 other than the positioning hole 704 are determined as non-positioning holes 705. Therefore, in the third modified example, by using the pin support member 73 as a non-positioning hole conversion mechanism, the candidate holes 702 other than the positioning hole 704 can be made to function as non-positioning holes 705.

[0048] In this case, as long as the pin 731 is inserted into the pin insertion hole 85 when attaching the tool 80 to the holder 70, there is an extremely small possibility that the tool 80 will be positioned at an incorrect position (phase or rotation position). Therefore, in the third modified example, by using the pin support member 73 having the pin 731, the same effects as those of the above-described embodiment can be obtained, and the hole filling member 72 can be omitted. This makes it possible to reduce, for example, the cost of manufacturing the hole filling member 72 and shorten the work time required to screw the hole filling member 72. It goes without saying that, as in the above-described embodiment, the hole filling member 72 may be screwed into any or all of the non-positioning holes 705, as indicated by the dashed line in FIG. 15.

[0049] 5-4.Fourth modified example In the above-described embodiment and each of the above-described modified examples, the pin support member 71 or the pin support member 73, which is a positioning hole mechanism, is used to enable the holder 70 to be shared by different tools 80 (tools 80R, 80L). However, when a pin 83 is fixed to the tool 80, as shown in Fig. 16, by using a hole filling member 72, which is a non-positioning hole mechanism, as a positioning hole mechanism to determine a positioning hole 704 in the holder 70, it is possible to enable the holder 70 to be shared by different tools 80 (tools 80R, 80L).

[0050] That is, in the fourth modified example, a positioning hole 704 is determined from among a plurality of candidate holes 702, and hole filling members 72 are screwed into all of the candidate holes 702 other than the candidate hole 702 determined as the positioning hole 704. As a result, the pin 83 fixed to the tool 80 only passes through the candidate holes 702 that are not blocked by the hole filling member 72, i.e., the positioning holes 704. Therefore, in the fourth modified example, the position (phase or rotation position) of the tool 80 can be determined by using the hole filling member 72 as a positioning hole mechanism.

[0051] When the position (phase or rotation position) of the tool 80 is determined without using the pin support member 71, it is preferable that the outer diameter of the pin 83 is slightly smaller than the inner diameter of the positioning hole 704 (candidate hole 702). This makes it possible to accurately determine the position (phase or rotation position) of the tool 80 when the pin 83 is inserted through the positioning hole 704 (candidate hole 702). It goes without saying that in the fourth modified example, the pin support member 71 may be screwed into the positioning hole 704, as in the second modified example.

[0052] 5-5. Fifth Modification In the above-described embodiment and each of the above-described modified examples, machine tool 10 is equipped with two spindles 31 and turret 42 (tool rest 40) arranged so that rotation axis A2 is parallel to rotation axis A1 of each of the spindles 31, and holder 70 is applied to machine tool 10. However, the configuration of the machine tool is not limited to this, and holder 70 can also be applied to a machine tool equipped with, for example, one spindle and a turret (tool rest) having a rotation axis parallel to or perpendicular to the rotation axis of the spindle. [Explanation of symbols]

[0053] 10...machine tool, 20...bed, 21...bed body, 21R, 21L...bed segments, 22...headstock mounting portion, 23...slide mounting portion, 24...connecting member, 30...headstock, 31...spindle, 32...spindle motor, 40...tool rest, 41...tool rest body, 42...turret, 50...slide portion, 51...first guide, 52...common slide, 521...first slide, 522...second guide, 53...second slide, 70...holder, 701...holder body, 702...candidate hole, 703...assembly hole, 704...position Positioning hole, 705...non-positioning hole, 71...pin support member (positioning hole mechanism), 711...through hole, 712...threaded portion, 72...hole filling member (non-positioning hole mechanism), 721...hole filling portion, 722...threaded portion, 73...pin support member (positioning hole mechanism), 731...pin, 732...threaded portion, 80 (80R, 80L)...tool, 81...tool body, 82...cutting edge, 83...pin, 84...assembly hole, W...workpiece, A1...rotation axis (of spindle), A2...rotation axis (of turret), A3...axis (of tool)

Claims

1. a holder body that holds the tool; a plurality of candidate holes provided in the holder body; a positioning hole conversion mechanism that causes the candidate holes, which are set as positioning holes supporting pins that determine the position of the tool relative to the holder body when the tool is held in the holder body, to function as the positioning holes; Equipped with the positioning hole mechanism has a pin support member that is assembled into the positioning hole and supports the pin, The pin support member is a holder that is assembled to the positioning hole by screwing.

2. The positioning hole mechanism is The holder according to claim 1 , further comprising a hole filling member that is assembled to the candidate holes that are set as non-positioning holes that do not support the pins so that the candidate holes function as the non-positioning holes.

3. a holder body that holds the tool; a plurality of candidate holes provided in the holder body; a positioning hole conversion mechanism that causes the candidate holes, which are set as positioning holes supporting pins that determine the position of the tool relative to the holder body when the tool is held in the holder body, to function as the positioning holes; Equipped with The positioning hole mechanism is a pin support member that is assembled into the positioning hole and supports the pin; a hole filling member that is assembled to cause the candidate holes that are set as non-positioning holes that do not support the pins among the candidate holes to function as the non-positioning holes, The hole filling member is a holder that is assembled to the non-positioning hole by screwing.

4. The pin is fixed to the tool; The holder according to claim 1 or 2, wherein the pin support member supports the pin by inserting the pin therethrough.

5. a holder body that holds the tool; a plurality of candidate holes provided in the holder body; a positioning hole conversion mechanism that causes the candidate holes, which are set as positioning holes supporting pins that determine the position of the tool relative to the holder body when the tool is held in the holder body, to function as the positioning holes; Equipped with the positioning hole mechanism has a pin support member that is assembled into the positioning hole and supports the pin, the pin is supported by the pin support member and inserted through an insertion hole provided in the tool, The pin support member is a holder that is assembled into the positioning hole while supporting the pin.

6. a holder body that holds the tool; a plurality of candidate holes provided in the holder body; a non-positioning hole making mechanism that makes the candidate holes set as non-positioning holes that do not support pins function as non-positioning holes, unlike positioning holes that support pins that determine the position of the tool relative to the holder body when the tool is held in the holder body; and Equipped with the non-positioning hole mechanism includes a hole filling member that is assembled into the non-positioning hole, The hole filling member is a holder that is assembled to the non-positioning hole by screwing.

7. a holder body that holds the tool; a plurality of candidate holes provided in the holder body; a non-positioning hole making mechanism that makes the candidate holes set as non-positioning holes that do not support pins function as non-positioning holes, unlike positioning holes that support pins that determine the position of the tool relative to the holder body when the tool is held in the holder body; and Equipped with the non-locating hole mechanism has a pin support member that is assembled to the locating hole and supports the pin, The pin support member is a holder that is assembled to the positioning hole by screwing.

8. a holder body that holds the tool; a plurality of candidate holes provided in the holder body; a positioning hole conversion mechanism that causes the candidate holes, which are set as positioning holes supporting pins that determine the position of the tool relative to the holder body when the tool is held in the holder body, to function as the positioning holes; Equipped with the candidate holes are arranged along a circumferential direction on the circumference of concentric circles, A holder in which the phase of the tool around the axis line relative to the holder body is determined by supporting the pin in the positioning hole of the candidate holes.

9. a holder body that holds the tool; a plurality of candidate holes provided in the holder body; a non-positioning hole making mechanism that makes the candidate holes set as non-positioning holes that do not support pins function as non-positioning holes, unlike positioning holes that support pins that determine the position of the tool relative to the holder body when the tool is held in the holder body; and Equipped with the candidate holes are arranged along a circumferential direction on the circumference of concentric circles, A holder in which the phase of the tool around the axis line relative to the holder body is determined by supporting the pin in the positioning hole of the candidate holes.

10. The pin is fixed to the tool; The holder according to claim 9 , wherein the positioning hole supports the pin by inserting it therethrough.

11. A device comprising the holder according to any one of claims 1 to 10, A machine tool that performs machining on a workpiece using the tool held in the holder.

12. Two spindles arranged parallel to each other and on which the workpiece is mounted; 12. The machine tool according to claim 11, further comprising: a tool table arranged so that its axis is parallel to each of the two main spindles, and supporting the tool via the holder.

13. the tool rest has a turret; 13. The machine tool according to claim 12, wherein the rotation axis of the main spindle and the rotation axis of the turret are arranged parallel to each other.

Images