TWI759896B - Press-down high-precision positioning device - Google Patents

Abstract

The present invention includes a base, a rotating component that rotates relative to the base, and a clutch device, wherein a first nozzle hole and a second nozzle hole are arranged on the surface of the base, and a first nozzle hole is arranged in the base at intervals. An annular flow channel and a second annular flow channel, wherein the two annular flow channels communicate with the two nozzle holes respectively, and both sides of each piston groove of the clutch device are respectively connected with the two annular flow channels, so that the present invention can penetrate The two nozzle holes can use the principle of the connecting pipe to control the multiple pistons of the clutch device to synchronously drive the engaging block up and down to achieve the effect of the clutch and complete high-precision positioning, effectively solving the existing indexing plate using multiple oil inlet pipes And the oil outlet pipe, resulting in complicated pipeline installation steps, and more problems of occupying space and pipeline entanglement, so as to provide a downward pressure type high-precision positioning device.

Description

Push-down high-precision positioning device

The invention relates to a machine tool accessory, in particular to a downward pressure positioning device applied to an indexing plate.

The existing indexing plate is a kind of machine tool attachment, which includes a turntable on which the workpiece is clamped, so that the workpiece can be rotated, indexed and positioned to facilitate various processing.

The existing indexing plate completes the above-mentioned indexing and positioning functions through a clutch device. The clutch device needs to be actuated by a plurality of pistons, and each piston corresponds to an oil inlet pipe and an oil outlet pipe respectively, resulting in the existing indexing plate. For each oil inlet pipe and oil outlet pipe, not only the pipeline installation steps are complicated, but also when the existing indexing plate is installed on the machine tool, these pipelines will also cause the problems of occupying space and causing various pipeline entanglements.

To sum up, the existing indexing plate does need to be improved.

In order to solve the problems that the existing indexing plate uses multiple oil inlet pipes and oil outlet pipes, which leads to complicated pipeline installation steps, more space occupation and pipeline entanglement, the present invention provides a downward pressure type high-precision positioning device, so as to improve the above problems and further described as follows.

The present invention relates to a push-down type high-precision positioning device, which comprises: a base, a first connecting hole and a second connecting hole are arranged on the surface of the base, and a first ring is arranged in the base at intervals shaped flow channel and a second annular flow channel, wherein the first annular flow channel is communicated with the first nozzle hole, and the second annular flow channel is communicated with the second nozzle hole; a rotating component, the rotating component is rotatably combined with the base; and a clutch device, the clutch device is provided with a piston seat, a plurality of pistons and a locking block, the piston The seat is set in the base, and a plurality of piston grooves are arranged at intervals. The bottom and top of each piston groove are respectively communicated with one of the first annular flow channel and the second annular flow channel. Correspondingly set in one of the piston grooves, and can protrude out of the piston seat through movement, the engaging block is driven by the plurality of pistons, and can move between a positioning position and a separating position, and the engaging block is The rotating component is locked at the positioning position, so that the rotating component cannot be rotated. When the engaging block moves from the positioning position to the separation position, it is pushed upward by the plurality of pistons; wherein the piston seat has a fixed a ring tooth portion, the rotating component has a positioning ring tooth portion, and the engaging block has two ring tooth portions, so that when the locking block is in the positioning position, the two ring tooth portions are correspondingly engaged with the fixed ring tooth portion and the Positioning ring teeth, the rotating assembly includes a worktable, the worktable can be rotated on the top of the base, an annular groove is recessed at the bottom of the worktable, and the engaging block can be movably located in the annular groove , and the teeth of the fixed ring and the teeth of the positioning ring extend into the annular groove.

In the above-mentioned push-down high-precision positioning device, the base has an accommodating groove, the accommodating groove has an upward bottom surface, and the bottom surface is provided with the first annular flow channel and a second annular flow channel at intervals. a flow channel, and the piston seat is arranged in the accommodating groove.

Further, in the above-mentioned press-down type high-precision positioning device, the second annular flow channel is provided on the outer side of the first annular flow channel, the piston seat is provided with a plurality of flow channels, and the bottom of each piston groove is connected to the first annular flow channel. The annular flow channels are communicated with each other, one end of each of the flow channels is communicated with the second annular flow channel, and the other end is communicated with the top of one of the piston grooves correspondingly.

Further, the above-mentioned pressing type high-precision positioning device, wherein the pressing type high-precision positioning device includes a driving mechanism, and the driving mechanism includes a worm and a worm wheel that mesh with each other, the worm is arranged in the base, and can Connected with an external driving source, the worm gear is connected with the rotating component and can drive the rotating component to rotate.

With the above-mentioned technical features, the present invention enables the down-pressure type high-precision control of the present invention through the first annular flow channel and the second annular flow channel arranged at intervals and the structural configuration of the clutch device. The position device can control the synchronous up and down movements of the plurality of pistons by using the principle of the connecting pipe through the two nozzle holes, so as to achieve the effect of clutching, so as to complete the high-precision positioning. Therefore, the present invention effectively solves the problem of using multiple oil inlet pipes and The oil outlet pipe leads to complicated pipeline installation steps, and also has the problems of occupying space and pipeline entanglement, so as to provide a downward pressure type high-precision positioning device.

10: Pedestal

101: The first nozzle hole

102: The second nozzle hole

11: accommodating slot

111: The first annular runner

112: Second annular runner

20: Rotary components

201: Spindle

21: Workbench

211: Annular groove

22: Positioning block

221: Positioning ring teeth

30: clutch device

31: Piston seat

310: Notch

311: Piston groove

312: runner

313: Fixed ring teeth

32: Pistons

33: Snap block

331: The first ring tooth

332:Second ring teeth

40: Drive mechanism

41: Worm

42: worm gear

FIG. 1 is a three-dimensional external view of a preferred embodiment of the present invention.

2 is an exploded perspective view of a partial cross-section of the preferred embodiment of the present invention.

FIG. 3 is a top view of a partial cross-section of the base according to the preferred embodiment of the present invention.

FIG. 4 is a side sectional view taken along the line A-A in FIG. 3 .

5 is a partially enlarged side sectional view of a preferred embodiment of the present invention.

FIG. 6 is a schematic view of the operation of the clutch device according to the preferred embodiment of the present invention.

FIG. 7 is a schematic diagram of the use state of the preferred embodiment of the present invention.

In order to understand the technical features and practical effects of the present invention in detail, and to realize it according to the contents of the description, the preferred embodiments shown in the drawings are further described in detail as follows: The present invention is a push-down type high-precision positioning device. , its preferred embodiment is shown in Figure 1 to Figure 3 and Figure 5, including a base 10, a rotating assembly 20, a clutch device 30 and a driving mechanism 40, wherein: as shown in Figures 2 to 4 As shown, the base 10 has an accommodating groove 11, the accommodating groove 11 has an upward bottom surface, and a first annular flow channel 111 and a second annular flow channel 111 are spaced on the bottom surface of the accommodating groove 11. Flow channel 112, the two annular flow channels 111, 112 are spaced apart and not communicated with each other in the horizontal direction, the two annular flow channels 111, 112 are arranged concentrically, and the second annular flow channel 112 is located in the first annular flow channel 111 The outer side of the base 10 is provided with a first take-over hole 101 and a second take-over hole 102, wherein the The first annular flow channel 111 communicates with the first nozzle hole 101 through an L-shaped flow channel, and the second annular flow channel 112 communicates with the second nozzle hole 102 through another L-shaped flow channel. The nozzle hole 101 and the second nozzle hole 102 can be respectively connected to an oil guide pipe, so that the oil can enter and exit the two annular flow channels 111 and 112 .

As shown in FIG. 2 , FIG. 3 and FIG. 5 , the rotating assembly 20 is rotatably combined with the base 10 . The rotating assembly 20 includes a rotating shaft 201 , a worktable 21 and a positioning block 22 , wherein the rotating shaft 201 is rotatably located in the center of the base 10; the worktable 21 is combined with the shaft 201 to be able to rotate on the top of the base 10, and an annular groove 211 is recessed at the bottom of the worktable 21; as shown in FIG. 5 , the positioning block 22 is combined with the bottom of the table 21 near the outer side, and is located in the accommodating groove 11, the positioning block 22 is shown in FIG. , and the positioning ring teeth 221 partially protrude into the annular groove 211 at the bottom of the worktable 21; the above-mentioned worktable 21 and the rotating shaft 201, and the positioning block 22 and the worktable 21 are fixed in a manner similar to that in the prior art. are the same, so they are not described in detail here.

Please refer to FIG. 2 , FIG. 3 , FIG. 5 and FIG. 6 , the clutch device 30 is provided with a piston seat 31 , a plurality of pistons 32 and an engaging block 33 , wherein the piston seat 31 is provided on the base 10 In the accommodating groove 11, as shown in FIG. 5 , a gap 310 is formed at the top of the piston seat 31 near the outer side, so that the gap 310 and the inner side wall of the accommodating groove 11 together form a space, and the rotating assembly 20 The positioning block 22 is rotatably located in the space; the piston seat 31 is provided with a plurality of piston grooves 311, a plurality of flow channels 312 and a fixed ring tooth 313 at intervals, and the bottom and top of each piston groove 311 are respectively connected with the One of the first annular flow channel 111 and the second annular flow channel 112 is in communication, wherein in the preferred embodiment of the present invention, the bottom of each piston groove 311 is directly connected to the first annular flow channel 111 communication, so that the oil can flow into each of the piston grooves 311 through the first nozzle hole 101 and the first annular flow channel 111, and one end of each of the flow channels 312 is communicated with the second annular flow channel 112, And the other end is correspondingly connected with the top of one of the piston grooves 311, so that the oil can flow into each of the piston grooves 311 through the second nozzle hole 102, the second annular flow channel 112 and each of the flow channels 312, and further , the fixed ring tooth portion 313 is protruded from the top of the piston seat 31 near the inner side, Part of the fixing ring teeth 313 extends into the annular groove 211 at the bottom of the worktable 21 , and is spaced apart from the positioning ring teeth 221 of the positioning block 22 .

Each of the pistons 32 is correspondingly disposed in one of the piston grooves 311, and is moved up and down by the oil entering the piston groove 311 from the first annular flow passage 111 or the second annular flow passage 112. , the plurality of pistons 32 move up and down synchronously, and each of the pistons 32 can protrude from the top of the piston seat 31 by moving upward.

The engaging block 33 is driven by the plurality of pistons 32 to move between a positioning position as shown in FIG. 5 and a separation position as shown in FIG. 6 , and when the engaging block 33 is in the positioning position , as shown in FIG. 5 , the positioning block 22 of the rotating assembly 20 is engaged, so that the rotating assembly 20 cannot be rotated.

Further, as shown in FIG. 2 , FIG. 5 and FIG. 6 , the engaging block 33 moves up and down in the annular groove 211 at the bottom of the worktable 21 , and the bottom of the engaging block 33 is provided with two The ring gears are respectively a first ring gear 331 and a second ring gear 332 . The first ring gear 331 is located inside the second ring gear 332 . When the engaging block 33 is positioned in the position When in position, the first ring tooth 331 correspondingly engages with the fixed ring tooth 313 of the piston seat 31 , and the second ring tooth 332 correspondingly engages with the positioning ring tooth 221 of the rotating assembly 20 .

Please refer to FIG. 3 , the driving mechanism 40 includes a worm 41 and a worm wheel 42 that mesh with each other. The worm 41 is installed in the base 10 and can be connected to an external driving source. The worm wheel 42 It is connected with the rotating assembly 20 and sleeved on the rotating shaft 201 so as to drive the rotating assembly 20 to rotate.

Please refer to Fig. 1, Fig. 5 to Fig. 7. During use, a workpiece can be fixed on the top of the worktable 21 to be processed. When the angle of the workpiece needs to be rotated, the oil can be controlled to enter the workpiece. The first annular flow channel 111 makes the plurality of pistons 32 push the engaging block 33 upward, so that the second ring teeth 332 of the engaging block 33 are separated from the positioning ring teeth 221 of the rotating assembly 20, and then pass through When the driving mechanism 40 is actuated, the rotating shaft 201 of the rotating assembly 20 can drive the table 21 to rotate, thereby changing the rotation of the workpiece. After rotating to an appropriate angle, control the oil to enter the second annular flow channel 112, so that the oil enters the top of the corresponding piston groove 311 through each of the flow channels 312, and presses the corresponding piston 32 downward, so that the The engaging block 33 moves downward and re-engages the fixed ring teeth 313 and the positioning ring teeth 221 , so that the rotating assembly 20 cannot continue to rotate, and can be accurately indexed and positioned.

With the above-mentioned technical features, the present invention makes the push-down high-precision positioning device of the present invention through the first annular flow channel 111 and the second annular flow channel 112 arranged at intervals and the structural configuration of the clutch device 30 . Through the two nozzle holes 101, 102, the plurality of pistons 32 can be controlled to move up and down synchronously by the principle of the connecting pipe, so as to achieve the effect of clutching, so as to complete high-precision positioning. Therefore, the present invention effectively solves the problem of using multiple The oil inlet pipe and the oil outlet pipe lead to complicated pipeline installation steps, and also have the problems of occupying space and pipeline entanglement, so as to provide a downward pressure type high-precision positioning device.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Anyone with ordinary knowledge in the technical field can utilize the present invention without departing from the scope of the technical solutions proposed by the present invention. Equivalent embodiments with partial changes or modifications made to the disclosed technical content, which do not depart from the technical solution content of the present invention, are still within the scope of the technical solution of the present invention.

10: Pedestal

20: Rotary components

201: Spindle

21: Workbench

211: Annular groove

22: Positioning block

221: Positioning ring teeth

30: clutch device

31: Piston seat

313: Fixed ring teeth

32: Pistons

33: Snap block

331: The first ring tooth

332:Second ring teeth

40: Drive mechanism

Claims (4)

A push-down high-precision positioning device, which includes: a base, a first nozzle hole and a second nozzle hole are arranged on the surface of the base, and a first annular flow channel is arranged in the base at intervals And a second annular flow channel, wherein the first annular flow channel is communicated with the first nozzle hole, the second annular flow channel is communicated with the second nozzle hole; a rotating assembly, the rotating assembly is rotatable combined with the base; and a clutch device, the clutch device is provided with a piston seat, a plurality of pistons and a clamping block, the piston seat is arranged in the base, and is provided with a plurality of piston grooves at intervals, each of which is The bottom and the top of the piston groove are respectively communicated with one of the first annular flow channel and the second annular flow channel, each of the pistons is correspondingly arranged in one of the piston grooves, and can protrude out of the piston seat through movement , the engaging block is driven by the plurality of pistons, and can move between a positioning position and a separating position, and the engaging block engages the rotating component at the positioning position, so that the rotating component cannot rotate. When the engaging block moves from the positioning position to the separating position, it is pushed upward by the plurality of pistons; wherein the piston seat has a fixed ring tooth portion, the rotating component has a positioning ring tooth portion, and the engaging block has a Two ring teeth, when the engaging block is in the positioning position, the two ring teeth are correspondingly engaged with the fixed ring teeth and the positioning ring teeth, the rotating assembly includes a worktable, the worktable can be The top of the base rotates, and the bottom of the worktable is recessed with an annular groove, the engaging block can be movably located in the annular groove, and parts of the fixing ring teeth and the positioning ring teeth extend into the annular groove in the groove. The press-down type high-precision positioning device according to claim 1, wherein the base has an accommodating groove, the accommodating groove has an upward bottom surface, and the bottom surface is provided with the first annular flow at intervals channel and a second annular flow channel, and the piston seat is arranged in the accommodating groove. The downward pressure type high-precision positioning device according to claim 2, wherein the second annular flow channel is provided on the outer side of the first annular flow channel, the piston seat is provided with a plurality of flow channels, and the bottom of each piston groove is provided with a plurality of flow channels. communicated with the first annular flow channel, one end of each of the flow channels is communicated with the second annular flow channel, and the other One end is correspondingly communicated with the top of one of the piston grooves. The push-down high-precision positioning device according to claim 1, wherein the push-down high-precision positioning device includes a drive mechanism, and the drive mechanism includes a worm and a worm gear that mesh with each other, and the worm is arranged on the base and can be connected with an external driving source, the worm gear is connected with the rotating assembly, and can drive the rotating assembly to rotate.

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