TWI581893B - Angle head C axis 1 degree positioning device - Google Patents

Description

Angle head C-axis 1 degree positioning device

The invention relates to a processing machine, in particular to an angle head C-axis 1 degree positioning device.

The machine tool has a linear movement axis and a rotation movement axis, and a commonly used linear movement axis such as an X axis, a Y axis, and a Z axis, and a rotational movement axis such as an A axis, a B axis, and a C axis. The A-axis refers to an axial direction that rotates about the X-axis, the B-axis refers to an axial direction that rotates about the Y-axis, and the C-axis refers to an axial direction that rotates about the Z-axis.

In order to be applicable to various angles and orientations, a general gantry type machining machine is provided with an angle head disposed along a C axis on one side of a spindle unit, and a motor is used to transmit power to a spindle through the spindle unit. The angle head, the angle head can be the center of rotation of the C axis, which drives a tool to rotate.

In addition, an encoder is generally built in the motor, and the encoder is used to detect the amount of rotation of the motor, and a detection signal is generated, and then replaced by a programmable control unit according to the detection signal. The angle of rotation of the angle head about the C axis.

Although the above structure can achieve the purpose of adjusting the working angle of the angle head, since the encoder corresponds to an input end of the spindle unit, the transmission structure generates a large backlash, and the transmission structure is manufactured and assembled. The resulting cumulative tolerance results in poor accuracy of the indexing of the angle head, and can only be done at 5 degrees, and at most only 2.5 degrees.

Accordingly, it is an object of the present invention to provide an angle head C-axis 1 degree positioning device that can improve angular indexing accuracy.

Therefore, the angle head C-axis 1 degree positioning device of the present invention is mounted on a spindle unit, and the rotational power of the spindle unit can drive an angle head to perform indexing positioning with a C-axis as a rotation center, and the spindle unit extends along an axis. And having an input end and an output end opposite to the input end, the angle head C-axis 1 degree positioning device comprises a positioning member, a detecting unit and a rotating member. The positioning member corresponds to the output end of the spindle unit and approaches the angle head. The detecting unit is mounted on the positioning member, and the rotating member is connectable to the output end of the spindle unit and corresponds to the detecting unit. The linkage of the spindle unit may cause the angle head to rotate by the axis as a center of rotation, and includes a plurality of sensing portions arranged at equal intervals around the axis.

The effect of the present invention is that the detecting unit is mounted on the positioning member and corresponds to the output end of the spindle unit. When the output end of the spindle unit drives the rotating member to rotate, the detecting unit is used to detect the feeling. The rotation signal of the measuring part can accurately know the rotation angle of the angle head, and can achieve the purpose of 1 degree indexing.

Referring to FIG. 1 and FIG. 2, an embodiment of the angle head C-axis 1 degree positioning device of the present invention is mounted on a spindle unit 100 extending along an axis L, and the rotational power of the spindle unit 100 can drive an angle head 200. The indexing is performed with the axis L as the center of rotation.

The spindle unit 100 has a sleeve 110, a spindle 120 rotatably disposed inside the sleeve 110, and an input end 130 corresponding to the axis L and disposed at one end of the spindle 120. The input end 130 is disposed at the output end 140 of the other end of the main shaft 120. The output end 140 has an upper member 141, a lower member 142 disposed on a side of the upper member 141 along the axis L, and a sliding portion 143 disposed between the upper member 141 and the lower member 142. The 142 has a retaining ring 144 adjacent to the sliding section 143. The main shaft 120 is driven by a motor (not shown), and the axis L can be rotated about the center of rotation, and the power is transmitted from the input end 130 to the output end 140.

The C-axis 1 degree positioning device includes a positioning member 10, a piston member 20 slidably disposed on the positioning member 10 along the axis L, and a linkage member 30 coupled to the piston member 20, and is disposed at the linkage a transmission clutch 40 between the member 30 and the output end 140, a detecting unit 50 mounted on the positioning member 10, a rotating member 60 connected to the linking member 30, and a positioning member 10 and the angle head. Positioning clutch 70 between 200.

The positioning member 10 corresponds to the output end 140 of the spindle unit 100 and approaches the angle head 200. In this embodiment, the positioning member 10 is fixed on one side of the sleeve 110 along the axis L and between the sleeve 110 and the angle head 200. The positioning member 10 has a top end 11 which is close to the sleeve 110, a bottom end 12 opposite to the top end 11 along the axis L, and a cylinder chamber 13 disposed between the top end 11 and the bottom end 12. .

The piston member 20 has a piston ring 21 slidably disposed in the cylinder chamber 13 along the axis L, and a main body 22 connected to the piston ring 21 and disposed outside the output end 140. The main body 22 is a hollow cylindrical shape, and has an upper end portion 221 protruding from the outside of the top end 11, a lower end portion 222 connected to the angle head 200, an inner annular surface 224 surrounding the axis L and defining an inner hole 223, and A keyway 225 recessed in the inner annular surface 224 and extending from the upper end portion 221 toward the lower end portion 222.

The linkage member 30 is rotatably sleeved on the sliding section 143 of the output end 140 and has a key block 31 nested in the key groove 225.

The transmission clutch 40 has an upper crown ring 41 disposed at the bottom of the linkage 30 and a lower crown ring 42 disposed on the top of the retaining ring 144 opposite the upper crown ring 41. The upper crown ring 41 is indirectly driven by the piston member 20 and can be converted into an engaged position engaged by the lower crown ring 42 by a separated position away from the lower crown ring 42 (see FIGS. 1 and 2). Referring to FIG. 3), when the upper crown ring 41 is in the engaged position relative to the lower crown ring 42, the power of the main shaft 120 can be transmitted to the piston member 20 via the transmission clutch 40, and the piston member 20 is opposed to the piston member 20 The positioning member 10 produces a rotation.

The detecting unit 50 is mounted on the positioning member 10. The detecting unit 50 of the embodiment may be a decoder.

The rotating member 60 is connected to the upper end portion 221 of the piston member 20 and corresponds to the detecting unit 50. In the embodiment, the rotating member 60 is disposed along the axis L on the positioning member 10 and the detecting unit 50 side. And disposed between the sleeve 110 and the positioning member 10, when the upper crown ring 41 is in the separated position relative to the lower crown ring 42, the rotating member 60 is interlocked by the spindle unit 100, and the axis L is The rotation center 60 drives the angle head 200 to rotate. The rotation member 60 includes a plurality of sensing portions 61 arranged at equal intervals around the axis L. The number of the sensing portions 61 is 360 (that is, one is set at intervals of one degree, Not shown).

The positioning clutch 70 has a fixed toothed ring 71 fixed to the positioning member 10 and a movable toothed ring 72 fixed to the angled head 200. When the piston member 20 drives the upper crown ring 41 away from the lower crown ring 42, the movable ring 72 is engaged with the fixed ring 71 (see FIGS. 1 and 2), and the angle head 200 is opposite to the The spindle unit 100 produces a positioning. When the upper crown ring 41 is engaged with the lower crown ring 42, the movable ring 72 is separated from the fixed ring 71 (see FIG. 3), and the rotational power of the spindle 120 can drive the angle through the piston member 20. The head 200 produces an indexing adjustment with respect to the spindle unit 100. Through the arrangement of the transmission clutch 40 and the positioning clutch 70, the angle head 200 can be coupled or relatively rotatable relative to the spindle unit 100.

1 and 2, it is shown that the rotational power of the main shaft 120 of the spindle unit 100 can be transmitted to the angle head 200, and the angle head 200 can process a workpiece (not shown). At this time, the piston member 20 is located at a rising position, the piston ring 21 is located at the upper half of the cylinder chamber 13, and the linkage member 30 can be used by the piston by the nesting of the key block 31 and the recessed groove 225. The member 20 supports the upper crown ring 41 of the transmission clutch 40 away from the lower crown ring 42. Therefore, the linkage 30, the piston member 20, and the rotating member 60 are stationary. At this time, the fixed ring gear 71 of the positioning clutch 70 and the movable ring gear 72 are engaged with each other, and the angle head 200 is positioned relative to the spindle unit 100.

As shown in FIG. 3, when the indexing is to be performed, a pressure source (not shown) can be activated in a state where the spindle 120 is stationary, and the pressure source enters the cylinder chamber 13 so that the piston The ring 21 is displaced downward, at which time the piston member 20 is in a lowered position, and the piston member 20 can interlock the linkage member 30, and the rotating member 60 is also moved down together, and the upper crown ring of the transmission clutch 40 is caused. Engaging the lower crown ring 42 so that when the spindle 120 is rotated, the rotational power is transmitted to the linkage 30, the piston member 20, the rotating member 60, and the transmission clutch 40. The angle head 200 is rotatable relative to the positioning member 10. At this time, the sensing portion 61 of the rotating member 60 is rotated relative to the detecting unit 50, and the detecting unit 50 can accurately detect the angle The rotation signal of the sensing portion 61 is obtained, and the rotation angle of the angle head 200 can be known.

And as shown in FIG. 3, when the upper crown ring 41 is engaged with the lower crown ring 42, the movable ring 72 is separated from the fixed ring 71, so the rotational power of the spindle 120 can smoothly drive the The angle head 200 produces an indexing adjustment with respect to the spindle unit 100.

Therefore, the present invention utilizes the detecting unit 50 to be mounted on the positioning member 10 and corresponds to the output end 140 of the spindle unit 100. When the output end 140 indirectly drives the rotating member 60 to rotate relative to the detecting unit 50, the present invention utilizes The detecting unit 50 detects the rotation signal of the sensing unit 61, and can accurately know the rotation angle of the angle head 200, and can achieve the purpose of 1 degree indexing.

Compared with the existing processing machine, the encoder is disposed at the input end of the spindle unit, and the present invention utilizes the detecting unit 50 and corresponds to the output end 140 of the spindle unit 100, so that the back caused by the transmission structure can be avoided. The gap, and the cumulative tolerance generated by the transmission structure in manufacturing and assembly, can ensure the accuracy of the indexing positioning of the angle head 200, and can achieve the purpose of 1 degree indexing.

However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.

100‧‧‧ spindle unit
L‧‧‧ axis
110‧‧‧ bushings
120‧‧‧ Spindle
130‧‧‧ Input end
140‧‧‧Export
141‧‧‧Upper piece
142‧‧‧ Lower section
143‧‧‧Sliding section
144‧‧ ‧ retaining ring
200‧‧‧ angle head
10‧‧‧ Positioning parts
11‧‧‧Top
12‧‧‧ bottom
13‧‧‧Cylinder room
20‧‧‧ piston parts
21‧‧‧Piston ring
22‧‧‧ Subject
221‧‧‧ upper end
222‧‧‧ lower end
223‧‧‧ 内孔
224‧‧‧ Inner torus
225‧‧‧ keyway
30‧‧‧ linkages
31‧‧‧Key block
40‧‧‧Drive clutch
41‧‧‧Upper crown ring
42‧‧‧ lower crown ring
50‧‧‧Detection unit
60‧‧‧Rotating parts
61‧‧‧Sensor Department
70‧‧‧Positioning clutch
71‧‧‧Fixed ring
72‧‧‧ movable ring

BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: Figure 1 is a cross-sectional view of an embodiment of an angled head C-axis 1 degree positioning device of the present invention; A partial enlarged view of 1; and FIG. 3 is a schematic view similar to the operation of FIG. 1, illustrating that an angle head can be indexed relative to a spindle unit.

100‧‧‧ spindle unit

22‧‧‧ Subject

L‧‧‧ axis

221‧‧‧ upper end

110‧‧‧ bushings

222‧‧‧ lower end

120‧‧‧ Spindle

223‧‧‧ 内孔

140‧‧‧Export

224‧‧‧ Inner torus

141‧‧‧Upper piece

225‧‧‧ keyway

142‧‧‧ Lower section

30‧‧‧ linkages

143‧‧‧Sliding section

31‧‧‧Key block

144‧‧ ‧ retaining ring

40‧‧‧Drive clutch

200‧‧‧ angle head

41‧‧‧Upper crown ring

10‧‧‧ Positioning parts

42‧‧‧ lower crown ring

11‧‧‧Top

50‧‧‧Detection unit

12‧‧‧ bottom

60‧‧‧Rotating parts

13‧‧‧Cylinder room

61‧‧‧Sensor Department

20‧‧‧ piston parts

70‧‧‧Positioning clutch

21‧‧‧Piston ring

71‧‧‧Fixed ring

72‧‧‧ movable ring

Claims (6)

An angle head C-axis 1 degree positioning device is mounted on a spindle unit, and the rotary power of the spindle unit can drive an angle head to perform indexing positioning with a C axis as a rotation center, the spindle unit extends along an axis and has a force input end and a power output end opposite to the input end, the angle head C-axis 1 degree positioning device comprises: a positioning member corresponding to the output end of the spindle unit and approaching the angle head; a detecting unit, installing And the rotating member is coupled to the output end of the spindle unit and corresponds to the detecting unit, and the axis unit is coupled to the axis to rotate the center to drive the angle head to generate rotation, and includes a plurality of surrounding The sensing unit is arranged at equal intervals on the axis. The angle head C-axis 1 degree positioning device according to claim 1, wherein the number of the sensing portions of the rotating member is 360. The angle head C-axis 1 degree positioning device according to claim 2, wherein the rotating member is disposed along the axis on the positioning member and the detecting unit side. The angle head C-axis 1 degree positioning device according to claim 1, wherein the spindle unit has a sleeve and a spindle rotatably disposed inside the sleeve, and the positioning member is fixed to the sleeve along the axis. On one side, the rotating member is disposed between the sleeve and the positioning member. The angle head C-axis 1 degree positioning device according to claim 1, further comprising a piston member slidably disposed on the positioning member along the axis, a linkage member coupled to the piston member, and a linkage a transmission clutch between the member and the output end, and a positioning clutch disposed between the positioning member and the angle head, the rotating member is coupled to the piston member, and the angle is transmitted through the transmission clutch and the positioning clutch. The head can be coupled or relatively rotatable relative to the spindle unit. The angle head C-axis 1 degree positioning device of claim 5, wherein the positioning member has a top end that is adjacent to the spindle unit, a bottom end of the phase opposite the top end along the axis, and a top end disposed at the top end a piston chamber between the bottom end and the bottom end, the piston member has a piston ring slidably disposed in the cylinder chamber along the axis, and a body coupled to the piston ring and disposed outside the output end. The main body has an upper end portion exposed to the outer portion of the top end, a lower end portion connected to the angle head, an inner annular surface surrounding the axis and defining an inner hole, and a recessed surface of the inner ring surface a keyway extending from the upper end portion toward the lower end portion, the linkage member is rotatably sleeved on the output end, and has a key block nested in the key groove, the transmission clutch having an upper crown disposed at the bottom of the linkage member a ring gear and a lower crown ring disposed at the output end opposite to the upper crown ring, the upper crown ring being indirectly driven by the piston member, and being convertible into a position away from the lower crown ring Engaging in the meshing position of the lower crown ring, the upper crown ring phase When the lower crown ring is in the engaged position, the power of the spindle unit can be transmitted to the piston member via the transmission clutch, and the piston member is rotated relative to the positioning member, and the rotating member is coupled to the upper end of the piston member. The positioning clutch has a fixed toothed ring fixed to the positioning member and a movable toothed ring fixed to the angled head. The piston member drives the upper crown ring away from the lower crown ring. The toothed ring is engaged with the fixed toothed ring, and the angular head is positioned relative to the main shaft unit. When the upper crown ring is engaged with the lower crown ring, the movable toothed ring is separated from the fixed toothed ring. The rotational power of the piston member can drive the angle head to produce an index adjustment relative to the spindle unit.