JP6150235B1 - Rotation holding device - Google Patents

Abstract

A rotation holding device capable of easily attaching a holding unit to a rotary table is provided. An insertion portion is inserted into a through hole from one end of a rotating shaft, and a mounting unit is inserted into the through hole from the other end of the rotating shaft. The screw hole and the end 51 are fastened by the female screw 17a and the male screw 51a of the end 51. Thereby, the insertion part 16 is fixed to the rotating shaft 31 in a state in which the outer peripheral surface of the insertion part 16 is strongly pressed against the inner peripheral surface 33 a of the matching part 33. [Selection] Figure 4

Description

  The present invention relates to a rotation holding device.

  Conventionally, a double-sided work indexing table is known (for example, Patent Document 1).

JP 2009-119568 A

  Here, in the double-sided work indexing table of Patent Document 1, the pallet (holding unit) is supported by being sandwiched between two indexing tables. That is, the double-sided work indexing table of Patent Document 1 requires two indexing tables, and as a result, the price of the entire apparatus increases as compared with the case of having one indexing table. There is also a problem that the footprint (installation area) of the entire apparatus increases.

  Therefore, an object of the present invention is to provide a rotation holding device capable of easily attaching a holding unit to a rotary table.

  In order to solve the above-mentioned problems, the invention of claim 1 is a rotation holding device that rotates the holding unit around a holding unit capable of holding an object and an axis extending in a horizontal direction. A rotary table to be mounted, and a mounting unit for attaching the holding unit to the rotary table, the rotary table having a rotary shaft having a through hole with the axis as a first central axis, The holding unit includes a plate-like base, a fixing part for fixing the object, and an insertion part whose tip is shaped like a truncated cone, provided on the main surface of the base. In addition, the adjustment is provided on the first side surface of the base, and the position of the base relative to the axis is adjusted by inserting the insertion portion into the through hole from one end of the rotating shaft. And the through hole has the When the direction in which the insertion portion is inserted is defined as the insertion direction, the outer peripheral length of the insertion portion in the direction perpendicular to the insertion direction increases as it proceeds from the distal end side to the base side, and the inner periphery of the rotating shaft Of the surfaces, the first inner peripheral surface on the one end side is shaped along the outer peripheral surface, and the insertion portion of the holding unit is inserted into the through hole from the one end side, and the attachment After the unit is inserted into the through hole from the other end side, the insertion portion is pulled from the one end side to the other end side by the mounting unit, so that the insertion portion is fixed to the rotating shaft. It is characterized by.

  The invention according to claim 2 is the rotation holding device according to claim 1, wherein when the insertion portion is inserted into the through-hole, the rotation shaft contacts a region where the rotation shaft contacts the outer peripheral surface of the insertion portion. In the case of the region, the inner peripheral length of the contact region decreases as it proceeds from the one end side to the other end side.

  Further, the invention of claim 3 is a rotary holding device, a holding unit capable of holding an object, a rotary table for rotating the holding unit around an axis extending in the horizontal direction, A mounting unit for attaching the holding unit to the rotary table, the rotary table having a rotary shaft in which a through hole having the shaft center as a first central axis is formed, and the holding unit is a plate A base, a fixing part for fixing the object, and an insertion part whose outer shape is a truncated cone. An adjustment portion that is provided on the first side surface and adjusts the position of the base relative to the axis by inserting the insertion portion into the through-hole from one end side of the rotation shaft; One where the insertion part is inserted into the through hole Is the insertion direction, the outer peripheral length of the insertion portion in a direction perpendicular to the insertion direction increases from the distal end side toward the base side, and the insertion portion is inserted into the through hole. When the region where the rotating shaft contacts the outer peripheral surface of the insertion portion is used as a contact region, the inner peripheral length of the contact region decreases from the one end side to the other end side, and the holding unit The insertion portion is inserted into the through-hole from the one end side, and the attachment unit is inserted into the through-hole from the other end side, and the insertion portion is inserted from the one end side by the attachment unit. The insertion portion is fixed to the rotating shaft by being pulled toward the end side.

  According to a fourth aspect of the present invention, in the rotary holding device according to any one of the first to third aspects, the insertion portion has a screw hole in which a female screw is formed, and the mounting unit has a male screw. The insertion part is fixed to the rotating shaft by screwing the screw hole and the end part to each other.

  According to a fifth aspect of the present invention, in the rotary holding device according to any one of the first to fourth aspects, the adjustment unit is configured such that the second central axis of the base extending along the main surface is the axis. The position of the base is adjusted so as to be located on the center.

  Further, the invention of claim 6 is the rotary holding device according to claim 5, further comprising a tailstock arranged on the opposite side of the rotary table with the holding unit interposed therebetween, and the second central axis Of the side surfaces of the bases that intersect, a second side surface is formed on the opposite side of the first side surface that is disposed in the vicinity of the adjustment portion, and intersects the second central axis on the second side surface. The holding unit attached to the rotary table is supported by pressing the recess with a tail shaft of the tailstock.

  According to the first to sixth aspects of the present invention, the holding unit inserted into the through hole is only fixed to the rotating shaft by the mounting unit, and the holding unit is held with respect to the axis of the rotating table. The position of the base is adjusted.

  That is, the holding unit can be attached to the rotary table without performing complicated adjustment work. Therefore, the man-hour required for the attaching operation of the holding unit can be reduced.

  In particular, according to the fourth aspect of the present invention, the insertion portion of the holding unit is fixed to the rotating shaft of the rotary table by screw fastening. Therefore, not only the man-hour required for the attaching operation of the holding unit but also the man-hour required for removing the holding unit from the rotary table can be reduced.

It is a front perspective view which shows an example of a structure of the rotation holding | maintenance apparatus in embodiment of this invention. It is a back perspective view showing an example of composition of a rotation holding device in an embodiment of the invention. It is a side view which shows an example of a structure of a rotation table vicinity. It is sectional drawing which shows an example of a structure of a rotation table vicinity. It is a front perspective view for demonstrating rotation operation of the holding unit by a turntable. It is a front perspective view for demonstrating rotation operation of the holding unit by a turntable. It is a front perspective view for demonstrating rotation operation of the holding unit by a turntable.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<1. Configuration of Rotation Holding Device>
1 and 2 are a front perspective view and a rear perspective view, respectively, showing an example of the configuration of the rotation holding device 100 according to the embodiment of the present invention. Here, the rotation holding device 100 is a device that rotates while holding the mounted workpiece, and is interlocked with the operation of a machine tool such as a machining center. As shown in FIGS. 1 and 2, the rotation holding device 100 mainly includes a holding unit 10, a rotary table 30, a tailstock 40, and an attachment unit 50.

  In FIG. 1 and the subsequent drawings, in order to facilitate understanding of each component described in the drawings, an XYZ orthogonal coordinate system in which the Z-axis direction is a vertical direction and the XY plane is a horizontal plane as necessary. Is attached.

  The holding unit 10 has an object (for example, a cylindrical coordinate system formed by the rotary table 30 (more specifically, a cylindrical coordinate system having the axis 30a of the rotary table 30 as a central axis (vertical axis)). This is a jig that can hold a workpiece. The detailed configuration of the holding unit 10 will be described later.

  The rotary table 30 is a so-called index table, and is used for setting (indexing) the rotation angle with high accuracy. As shown in FIGS. 1 and 2, the rotary table 30 rotates the holding unit 10 around an axis 30a extending in the horizontal direction DR1 (a direction parallel to the X axis). The detailed configuration of the rotary table 30 will be described later.

  As shown in FIGS. 1 and 2, the tailstock 40 is disposed on the opposite side of the rotary table 30 with the holding unit 10 interposed therebetween. The tailstock 40 mainly includes a tailstock 41 and a mounting base 42.

  The tailstock 41 can be moved back and forth in the horizontal direction DR1 along the axis 30a with respect to the mount 42. The tailstock 40 can support the holding unit 10 attached to the turntable 30 by pressing the depression 11 d formed on the side surface 11 b of the holding unit 10.

  The attachment unit 50 is an element for attaching the holding unit 10 to the turntable 30. As shown in FIG. 2, in the present embodiment, a so-called bolt is employed as the mounting unit 50. Of the constituent elements of the mounting unit 50, the elements hidden in the turntable 30 when the holding unit 10 is mounted will be described later.

<2. Configuration of holding unit, rotary table, and mounting unit>
3 and 4 are a side view and a cross-sectional view showing an example of the configuration in the vicinity of the rotary table 30, respectively. Here, the configuration of the holding unit 10, the rotary table 30, and the mounting unit 50 will be described with reference to FIGS.

  As shown in FIG. 1, the rotary table 30 mainly includes a rotary shaft 31 and a motor storage unit 35. The motor storage unit 35 stores a motor (not shown) that is interlocked and connected to the rotary shaft 31, and this motor applies a rotational force to the rotary shaft 31. Thereby, the rotating shaft 31 is rotated around the axis 30a by transmission of this rotational force.

  As shown in FIGS. 1 and 2, the rotating shaft 31 is a rotating body arranged side by side with the motor storage portion 35, and has a matching portion 33. In addition, a through hole 32 having a central axis 32a as a central axis 32a (first central axis) is formed in the rotary shaft 31.

  The adapting portion 33 is a so-called adapter, and is used to adapt the shape of the inner peripheral surface 32 b of the through hole 32 of the rotating shaft 31 to the holding unit 10. That is, in the present embodiment, the inner space of the fitting portion 33 attached to the through hole 32 constitutes a part of the through hole 32. As shown in FIGS. 3 and 4, among the inner peripheral surface 33 a of the fitting portion 33, the one on the one end 31 a side of the rotating shaft 31 (first inner peripheral surface) is shaped along the outer peripheral surface 16 b of the insertion portion 16. It is said that.

  More specifically, when the region where the inner peripheral surface 33a of the fitting portion 33 contacts the outer peripheral surface 16b of the insertion portion 16 when the insertion portion 16 is inserted into the rotating shaft 31, this contact region is defined. The length of the inner circumference NR1 (see FIG. 3) is set so as to gradually decrease from the one end 31a side of the rotating shaft 31 toward the other end 31b side.

  The holding unit 10 is a fixing jig that can rotate around an axis 30a. As shown in FIGS. 1 to 4, the holding unit 10 mainly includes a plate-like base 11, a plurality of fixing portions 13, and an adjusting portion 15.

  A plurality of (four in the present embodiment) fixing portions 13 are provided on the main surface 11e of the base 11, as shown in FIGS. Here, in the present embodiment, the “main surface” refers to a surface having a larger area than other surfaces among a plurality of flat surfaces forming the outer surface of the plate-like body. For example, the “main surface” in FIGS. 1 and 2 corresponds to surfaces (upper surface and lower surface) parallel to the XY plane.

  Each of the plurality of fixing portions 13 has a fixing claw 14. Each fixed claw 14 can be moved up and down in a direction perpendicular to the main surface 11e. And each fixed nail | claw 14 presses a target object, falling to the target object side. As a result, the object is fixed to the base 11.

  The base 11 is a plate-like body that holds an object. As shown in FIGS. 1 and 2, when the holding unit 10 is mounted on the rotary table 30, the central axis 11c (second central axis: see FIG. 4) extending along the main surface 11e of the base 11 is rotated. It coincides with the axis 30a of the table 30. As shown in FIG. 3, an adjustment unit 15 is provided on the side surface 11 a (first side surface) side of the base 11. That is, the adjustment part 15 is arrange | positioned adjacent to the side surface 11a.

  Furthermore, as shown in FIG. 1, a side surface 11b is formed on the side opposite to the side surface 11a among the side surfaces intersecting with the axis 30a (that is, the central axis 11c). Further, a concave 11d is formed on the side surface 11b so as to intersect with the axis 30a. Then, when the depression 11d is pressed by the tailstock 41 of the tailstock 40, the tailstock 40 is moved to the rotary table 30 (more specifically, in a cantilever shape with respect to the rotary table 30). The attached holding unit 10 is supported.

  The adjustment unit 15 adjusts the position of the base 11 with respect to the axis 30 a when the holding unit 10 is attached to the turntable 30. As shown in FIGS. 3 and 4, the adjustment unit 15 includes an insertion unit 16.

  The insertion portion 16 is provided on the opposite side of the base 11 with the mounting block 12 interposed therebetween. As shown in FIGS. 3 and 4, the outer shape of the distal end 16 a of the insertion portion 16 is a truncated cone shape. When the direction in which the insertion portion 16 is inserted into the through hole 32 is the insertion direction DR2, the length of the outer periphery TR1 (see FIG. 3) of the insertion portion 16 in the direction perpendicular to the insertion direction DR2 is the insertion portion 16 It is set to gradually increase from the tip 16a side to the base 11 side. Furthermore, as shown in FIG. 3, the insertion portion 16 has a screw hole 17 in which a female screw 17a is formed.

  Here, when the holding unit 10 is attached to the turntable 30, as shown in FIG. 4, the insertion portion 16 has an inner space (substantially the through hole 32) of the fitting portion 33 from the one end 31 a side of the rotation shaft 31. Inserted into. Thereby, the position (more specifically, the position and posture) of the base 11 is adjusted so that the central axis 11c of the base 11 extending along the main surface 11e is positioned on the axis 30a.

  The attachment unit 50 is a coupling element for screwing the holding unit 10 to the rotary table 30. As shown in FIG. 4, the mounting unit 50 has an end portion 51 in which a male screw 51 a is formed.

  The insertion portion 16 is inserted into the through hole 32 from the one end 31a side of the rotating shaft 31, and the attachment unit 50 is inserted into the through hole 32 from the other end 31b side of the rotating shaft 31. The screw hole 17 and the end 51 are screwed together by the female screw 17 a and the male screw 51 a of the end 51. That is, at the time of screw fastening, the insertion portion 16 is pulled from the one end 31 a side to the other end 31 b side by the mounting unit 50. Thereby, the insertion part 16 is fixed to the rotating shaft 31 in a state where the outer peripheral surface 16 b of the insertion part 16 is strongly pressed against the inner peripheral surface 33 a of the matching part 33.

  Each of FIGS. 5 to 7 is a front perspective view for explaining the rotation operation of the holding unit 10 by the rotary table 30. 5 to 7, for convenience of illustration, the fixing unit 13 of the holding unit 10, the motor storage unit 35 of the rotary table 30, and the mounting base 42 of the tailstock 40 are omitted.

  As described above, the position of the base 11 with respect to the axis 30a of the rotating shaft 31 is accurately adjusted by the shapes of the inner peripheral surface 33a of the fitting portion 33 of the rotating shaft 31 and the outer peripheral surface 16b of the inserting portion 16. Therefore, as shown in FIGS. 5 to 7, the rotation holding device 100 can favorably rotate the base 11 around the axis 30 a.

<3. Advantages of Rotation Holding Device in Present Embodiment>
As described above, in the rotary holding device 100 according to the present embodiment, the insertion portion 16 of the holding unit 10 inserted into the through hole 32 is simply fixed to the rotary shaft 31 by the mounting unit 50. The position of the base 11 of the holding unit 10 is adjusted with respect to the axis 30a.

  That is, the holding unit 10 can be attached to the rotary table 30 without performing complicated adjustment work (for example, work for aligning the center axis 11c of the base 11 and the axis 30a of the rotary shaft 31). it can. Therefore, the man-hour required for the attachment work of the holding unit 10 can be reduced.

  In the rotation holding device 100 of the present embodiment, the insertion portion 16 of the holding unit 10 is fixed to the rotation shaft 31 of the turntable 30 by screw fastening. Therefore, not only the attaching operation of the holding unit 10 but also the man-hour required for the operation of removing the holding unit 10 from the rotary table 30 can be reduced.

<4. Modification>
Although the embodiments of the present invention have been described above, the present invention is not limited to the above embodiments, and various modifications can be made.

  (1) In the present embodiment, it has been described that the holding unit 10 is attached to the turntable 30 by screwing the screw hole 17 of the insertion portion 16 of the holding unit 10 and the end 51 of the mounting unit 50. However, it is not limited to this.

  That is, the attachment unit 50 may be any unit that can pull the insertion portion 16 from the one end 31a side to the other end 31b side of the rotating shaft 31, and is limited to the one in the present embodiment (for example, a bolt). It is not what is done.

  (2) In the present embodiment, the inner peripheral surface 33a of the fitting portion 33 has been described as having a shape along the outer peripheral surface 16b of the insertion portion 16 in the holding unit 10, but the present invention is not limited to this. It is not something. The fitting portion 33 is configured integrally with the rotation shaft 31, and the inner peripheral surface (first inner peripheral surface) on the one end 31 a side of the rotation shaft 31 among the inner peripheral surface 32 b of the through hole 32 is the insertion portion 16. It may be a shape along the outer peripheral surface 16b. In this case, the insertion portion 16 is inserted into the through hole 32 from the one end 31 a side of the rotating shaft 31.

  That is, it is sufficient if the one on the one end 31 a side of the inner peripheral surface of the rotating shaft 31 has a shape along the outer peripheral surface 16 b of the insertion portion 16. More specifically, when the region where the rotating shaft 31 contacts the outer peripheral surface 16b of the inserting portion 16 when the inserting portion 16 is inserted into the rotating shaft 31, the inner peripheral length of the contact region is The rotation shaft 31 may be set so as to decrease from the one end 31a side toward the other end 31b side.

  (3) Furthermore, in the present embodiment, the base 11 of the holding unit 10 has been described as being supported by the tailstock 40, but is not limited thereto. For example, when the size of the base 11 in the direction of the axis 30a is small and the influence of the deflection in the direction of the axis 30a is small, the tailstock 40 may not be used as the configuration of the rotation holding device 100.

10 holding unit 11 base 11a side surface (first side surface)
11b Side surface (second side surface)
11c Center axis (second center axis)
11d Concave 11e Main surface 13 Fixing part 15 Adjustment part 16 Insertion part 16a Tip 16b Outer peripheral surface 17 Screw hole 17a Female thread 30 Rotary table 30a Axis 31 Rotary axis 31a One end 31b The other end 32 Through hole 32a Central axis (first central axis)
32b, 33a Inner peripheral surface 33a Inner peripheral surface 40 Tailstock 41 Tailstock shaft 50 Mounting unit 51 End 51a Male thread 100 Rotation holding device DR1 Horizontal direction DR2 Insertion direction NR1 Inner periphery TR1 Outer periphery

Claims (6)

A rotation holding device,
(a) a holding unit capable of holding an object;
(b) a rotary table that rotates the holding unit around an axis extending in the horizontal direction;
(c) an attachment unit for attaching the holding unit to the rotary table;
With
The rotary table is
(b-1) a rotating shaft in which a through hole having the axis as a first central axis is formed;
Have
The holding unit is
(a-1) a plate-like base;
(a-2) provided on the main surface of the base, and a fixing portion for fixing the object;
(a-3) includes an insertion portion whose tip outer shape is a truncated cone, and is provided on the first side surface side of the base, and the insertion portion extends from the one end side of the rotating shaft to the through hole. An adjustment unit that adjusts the position of the base relative to the axis by being inserted into
Have
When the insertion direction is the direction in which the insertion portion is inserted into the through hole, the outer peripheral length of the insertion portion in the direction perpendicular to the insertion direction increases as it advances from the distal end side to the base side,
Of the inner peripheral surface of the rotating shaft, the first inner peripheral surface on the one end side is shaped along the outer peripheral surface,
The insertion portion of the holding unit is inserted into the through hole from the one end side, and the attachment unit is inserted into the through hole from the other end side, and the insertion portion is inserted into the through hole by the attachment unit. The rotation holding device is characterized in that the insertion portion is fixed to the rotating shaft by being pulled to the other end side. The rotation holding device according to claim 1,
When the region where the rotating shaft contacts the outer peripheral surface of the insertion portion when the insertion portion is inserted into the through hole is a contact region, the inner peripheral length of the contact region is A rotation holding device, wherein the rotation holding device decreases as it proceeds to the other end side. A rotation holding device,
(a) a holding unit capable of holding an object;
(b) a rotary table that rotates the holding unit around an axis extending in the horizontal direction;
(c) an attachment unit for attaching the holding unit to the rotary table;
With
The rotary table is
(b-1) a rotating shaft in which a through hole having the axis as a first central axis is formed;
Have
The holding unit is
(a-1) a plate-like base;
(a-2) provided on the main surface of the base, and a fixing portion for fixing the object;
(a-3) includes an insertion portion whose tip outer shape is a truncated cone, and is provided on the first side surface side of the base, and the insertion portion extends from the one end side of the rotating shaft to the through hole. An adjustment unit that adjusts the position of the base relative to the axis by being inserted into
Have
When the insertion direction is the direction in which the insertion portion is inserted into the through hole, the outer peripheral length of the insertion portion in the direction perpendicular to the insertion direction increases as it advances from the distal end side to the base side,
When the region where the rotating shaft contacts the outer peripheral surface of the insertion portion when the insertion portion is inserted into the through hole is a contact region, the inner peripheral length of the contact region is Decrease as you go to the other end,
The insertion portion of the holding unit is inserted into the through hole from the one end side, and the attachment unit is inserted into the through hole from the other end side, and the insertion portion is inserted into the through hole by the attachment unit. The rotation holding device is characterized in that the insertion portion is fixed to the rotating shaft by being pulled to the other end side. In the rotation holding device according to any one of claims 1 to 3,
The insertion portion has a screw hole in which a female screw is formed,
The mounting unit has an end portion on which a male screw is formed,
The rotation holding device, wherein the screw hole and the end portion are screwed to fix the insertion portion to the rotating shaft. In the rotation holding device according to any one of claims 1 to 4,
The rotation holding device, wherein the adjustment unit adjusts the position of the base so that a second central axis of the base extending along the main surface is positioned on the axis. The rotation holding device according to claim 5,
(d) a tailstock arranged on the opposite side of the rotary table across the holding unit;
Further comprising
Of the side surface of the base that intersects with the second central axis, a second side surface is formed on the opposite side of the first side surface that is disposed in proximity to the adjustment unit,
A recess is formed on the second side surface so as to intersect the second central axis,
The rotation holding device, wherein the holding unit attached to the turntable is supported by pressing the depression with a tailstock shaft of the tailstock.

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