TWM639345U - Positioning mechanism for accessory holder of machine tool - Google Patents

Abstract

A clamp seat positioning mechanism for machine tool accessories, including a base, which is annular and provided with a first oil pressure channel; pressure channel; a certain-angle toothed plate group, including a certain-angle lower toothed plate and a certain-angled upper toothed plate, the fixed-angle lower toothed plate is fixed on the top surface of the outer ring seat; an inner ring seat can be relatively movable sleeved on the In the outer ring seat; a driving chainring set, including a driving lower toothing plate and a driving upper toothing plate, the driving lower toothing plate is fixed on the top surface of the inner ring seat; a bearing seat, the bearing seat is sleeved on the inner ring seat center and can rotate with the inner ring seat; and a control unit, which is used to switch the meshing state of the fixed-angle chainring group and the driving chainring group, so that at least one of the fixed-angle chainring group and the driving chainring group maintains a meshing relationship .

Description

Clamp seat positioning mechanism for machine tool accessories

The invention is related to the angle positioning mechanism of the accessory clamp seat in the machine tool, especially a positioning mechanism that can keep at least one set of toothed discs engaged and avoid the angular deviation of the bearing seat.

In traditional machine tools, the clamping seat (for example: bearing seat) for clamping accessories is usually installed on a positioning mechanism. Drive the chainring set, if you want to fix the positioning angle of the accessories (for example: the object to be processed, the tool or the milling head), the positioning mechanism will connect the bearing seat and the fixed-angle toothing plate set to each other, and jointly fix the angle of the bearing seat , the processing is carried out under the condition that the fixed-angle toothed disc group maintains the meshing relationship; and if the positioning angle of the accessories is to be adjusted during the processing, the meshing relationship of the fixed-angle toothed disc group must be released first, and the bearing seat and the fixed-angled toothed disc group The connection of the chainring group is released, and it is connected with the driving chainring group instead. In this way, the bearing seat will rotate with the driving chainring group, and the processor can indirectly rotate the bearing seat to the specified angle by rotating the driving chainring group. Finally, After the adjustment of the angle is completed, the connection relationship between the bearing seat and the drive chainring group is released, and the bearing seat is connected to the fixed-angle chainring group again to fix the positioning angle.

When the bearing seat wants to switch the connection relationship between the fixed-angle toothed plate and the driving toothed plate, a two-way valve (such as: two-way piston, oil pressure solenoid valve) is usually used to achieve it. However, the bearing seat is located between the two toothed plates. There will be a small idle stroke in the switching stroke between the two. In the idle stroke, the bearing seat will not be connected with any chainring set. In the separated state, due to the additional positioning effect when connecting the chainring set, the bearing seat and the chainring The angle of the group is fixed or rotates synchronously, and the angle of the bearing seat is less likely to be offset. When the bearing seat is separated from the two toothed disc groups at the same time, if the weight of the clamped parts is too heavy or the self-weight of the bearing seat is uneven, it is very likely to cause the bearing seat to lose weight. Deflection or even slippage will cause the angle deviation of the accessories. For this reason, the user must correct the angle and even re-clamp the accessories. If the angle deviation occurs and cannot be found in time, it will cause defects in the processed object. Manpower, material and time are wasted in vain, therefore, there is room for improvement.

In view of this, how to improve the above-mentioned problems is the primary issue that this creation intends to solve.

The purpose of this creation is to provide a clamp seat positioning mechanism for machine tool accessories. The bearing seat is connected with the fixed-angle toothed set and the driving toothed set at the same time, and two sets of independently operated control valves are respectively corresponding to the two toothed sets to control the gears. The meshing relationship of the disk group makes the meshing process of the fixed-angle toothed disk group and the driving toothed disk group independent, and no longer restricts the switching meshing relationship of the two toothed disk groups to be synchronized. In this way, the bearing seat can always be in contact with the gear during the switching stroke. At least one set of meshed chainrings remains connected, so that the idle travel no longer exists, so that the bearing seat no longer shifts due to uneven self-weight or the weight of accessories, thereby reducing the risk of angular deviation when switching meshing relationships, Improve the machining accuracy of machine tools.

In order to achieve the above-mentioned purpose, this creation provides a positioning mechanism for the clamp seat of machine tool accessories, which includes: a base, which is annular and is provided with a first oil pressure channel, and the inner edge of the top side of the base is concavely provided with a first recess ; an outer ring seat, which can be relatively movably sleeved in the base, and the outer edge of the top side of the outer ring seat is extended with a first shoulder, and the first shoulder and the first recess jointly form a ring-shaped first The oil pressure space is used to store the oil pressure input from the first oil pressure channel. A second recess is recessed on the inner edge of the top side of the outer ring seat. The outer ring The seat is also provided with a second oil pressure channel; the fixed-angle toothed disc group includes a certain-angle lower toothed plate and a certain-angled upper toothed plate correspondingly arranged. The fixed-angle lower toothed plate is fixed on the top surface of the outer ring seat, and can be The outer ring seat is driven to mesh with the fixed-angle upper toothed plate; an inner ring seat is relatively movable and sleeved in the outer ring seat, and a second shoulder is extended on the top side of the inner ring seat, and the second shoulder Together with the second concave part, an annular second oil pressure space is formed to store the oil pressure input from the second oil pressure channel; a driving chainring set includes a driving lower toothing plate and a correspondingly arranged driving upper toothing The tooth plate, the driving lower tooth plate is fixed on the top surface of the inner ring seat, and can be meshed with the driving upper tooth plate as the inner ring seat is driven; a bearing seat is used to clamp the accessories of the machine tool, and the bearing seat is sleeved inside in the ring seat and can rotate with the inner ring seat; and a control unit, which is used to switch the meshing state of the fixed-angle chainring group and the driving chainring group. When the group is meshing, the hydraulic pressure is first input from the second hydraulic channel, so that the oil pressure in the second hydraulic space lifts the inner ring seat, and then drives the lower drive tooth plate to mesh with the drive upper tooth plate. After a predetermined period of time passes, then The hydraulic pressure is released from the first oil pressure channel to sink the outer ring seat to release the meshing relationship of the fixed-angle toothed disc set; First, input oil pressure from the first oil pressure channel, so that the oil pressure in the first oil pressure space lifts the outer ring seat, and then drives the fixed-angle lower toothed disc to mesh with the fixed-angle upper toothed disc. The oil pressure is released from the second oil pressure passage, so that the inner ring seat sinks to release the meshing relationship of the drive chainring set.

Preferably, the inner ring seat and the bearing seat jointly form a plurality of round holes arranged in a circle, and each of the plurality of round holes is provided with a guide pin, so that the bearing seat can only slide up and down relative to the inner ring seat, and cannot be opposite to each other. Rotate on the inner ring seat.

Preferably, a protrusion is provided on the inner edge of the top side of the outer ring seat, a protrusion is provided opposite to the top surface of the inner ring seat, and a reset element is provided between the protrusion and the protrusion.

Preferably, the inlet end of the first oil pressure channel is opened on the bottom surface of the base, and the outlet end is connected to the first oil pressure space.

Preferably, the inlet end of the second oil pressure passage is opened on the bottom surface of the outer ring seat, and the outlet end is connected to the second oil pressure space.

Through the clamp seat positioning mechanism of the machine tool accessories of this creation, two independently acting control valves ensure that the bearing seat is connected with at least one set of meshed toothed discs, and there will be no situation where the two toothed discs are disengaged at the same time. With the positioning effect attached to the group, the risk of angular deviation of the bearing seat due to the weight of the accessories or the uneven weight of the bearing will be reduced, so that this creation has the effect of improving the processing accuracy.

The above-mentioned purposes and advantages of this creation are not difficult to obtain a deep understanding from the detailed description and accompanying drawings of the following selected embodiments.

1: Clamp seat positioning mechanism for machine tool accessories

10: Base

11: The first oil pressure channel

12: The first recess

20: Outer ring seat

21: The second oil pressure channel

22: First shoulder

23: The first oil pressure space

24: Second recess

25: Bump

30: Fixed-angle chainring set

31: fixed angle lower gear

32: fixed angle upper gear plate

40: inner ring seat

41: Second shoulder

42: The second oil pressure space

43: convex part

44: Reset element

50: Drive chainring set

51: drive the lower chainring

52: Drive the upper chainring

60: bearing seat

61: round hole

62: Guide pin

Figure 1 is a three-dimensional sectional view of this creation; Figure 2 is a three-dimensional exploded view of this creation; Figure 3 is a schematic diagram of this creation during processing; Figure 4 is a schematic diagram of this creation when switching meshing states; Figure 5 is a schematic diagram of the creation angle adjustment.

Please refer to Figures 1 to 3, which show the positioning mechanism 1 of the machine tool accessories clamp seat provided by this creation, including a base 10, an outer ring seat 20, a certain angle tooth plate set 30, an inner ring seat 40, A drive chainring set 50, a bearing seat 60 and a control unit (not shown in the figure), wherein: the base 10 is annular and is provided with a first oil pressure channel 11, the top inner edge of the base 10 A first recess 12 is recessed.

The outer ring seat 20 is sheathed in the base 10 in a relatively movable manner, and the outer ring seat 20 is provided with a second oil pressure passage 21, and a first shoulder 22 is extended on the outer edge of the top side of the outer ring seat 20. A shoulder 22 and the first recess 12 jointly form a first oil pressure space 23 for storing the oil pressure input from the first oil pressure passage 11. In this embodiment, the inlet end of the first oil pressure passage 11 Opened on the bottom surface of the base 10, the outlet port is connected to the first oil pressure space 23. As shown in Figures 1 to 3, a second recess 24 is recessed on the inner edge of the top side of the outer ring seat 20 and the top surface is also provided with There is an annular protrusion 25 , and the protrusion 25 relatively covers part of the inner ring seat 40 .

The fixed-angle gear set 30 includes a certain-angle lower gear 31 and a correspondingly arranged certain-angle upper gear 32 , the fixed-angle lower gear 31 is fixed on the top surface of the outer ring seat 20 and can be driven by the outer ring seat 20 And mesh with the fixed angle upper chainring 32 .

The inner ring seat 40 is sheathed in the outer ring seat 20 so as to be relatively movable. A second shoulder 41 extends from the top outer edge of the inner ring seat 40 . The second shoulder 41 and the second recess 24 jointly form a first The second oil pressure space 42 is used to store the oil pressure input from the second oil pressure passage 21. In this embodiment, the inlet end of the second oil pressure passage 21 is opened on the bottom surface of the outer ring seat 20, and the outlet end is connected to To the second oil pressure space 42, the top surface of the inner ring seat 40 is provided with a convex portion 43 opposite to the convex block 25, and a reset is provided between the convex block 25 and the convex portion 43. Element 44, when the drive chainring set 50 is engaged, the reset element 44 begins to accumulate elastic restoring force because it is pressed by the bump 25 and the convex portion 43, and when the drive tooth set 50 is disengaged, the accumulated elastic restoring force of the reset element 44 The elastic restoring force will push the inner ring seat 40 back to the second shoulder 41 of the outer ring seat 20 .

The driving chainring group 50 includes a driving lower toothing plate 51 and a correspondingly arranged driving upper toothing plate 52. The driving lower toothing plate 51 is fixed on the top surface of the inner ring seat 40, and can be driven with the inner ring seat 40 to drive. The upper chainring 52 meshes.

The bearing seat 60 is used to clamp the accessories of the machine tool. The bearing seat 60 is sleeved in the inner ring seat 40 and can rotate together with the inner ring seat 40. Preferably, as shown in Figure 1, in this embodiment, The contact surfaces between the inner ring seat 40 and the bearing seat 60 jointly form a plurality of circular holes 61 arranged in a surrounding arrangement, and each of the plurality of circular holes 61 is provided with a guide pin 62, and the setting of the guide pin 62 has The blocking effect prevents the bearing seat 60 from rotating relative to the inner ring seat 40 , thereby allowing the inner ring seat 40 to drive the bearing seat 60 synchronously when rotating.

The control unit (not shown in the figure) is used to switch the meshing state of the fixed-angle toothed disc group 30 and the driving toothed disc group 50. The oil pressure channel 11 and the second oil pressure channel 21 input or discharge oil pressure, and the preset programming of the control unit is as follows: when the meshing state of the fixed-angle toothed disc group 30 is switched to the meshing state of the driving toothed disc group 50, the The second oil pressure channel 21 inputs oil pressure, so that the oil pressure in the second oil pressure space 42 lifts the inner ring seat 40, and then drives the driving lower toothed plate 51 to mesh with the driving upper toothed plate 52. An oil pressure channel 11 releases the oil pressure, causing the outer ring seat 20 to sink to release the meshing relationship of the fixed-angle toothed set 30; When meshing, the oil pressure is first input from the first oil pressure channel 11, so that the oil pressure in the first oil pressure space 23 lifts the outer ring seat 20, and then drives the fixed-angle lower toothed disc 31 to mesh with the fixed-angle upper toothed disc 32. After a predetermined period of time passes, the oil pressure is released from the second oil pressure channel 21 to make the inner ring seat 40 sink to release the meshing relationship of the driving chainring set 50 .

Please refer to Figures 3 to 5, the action sequence of the clamp seat positioning mechanism 1 of the machine tool accessory of this invention is described in detail as follows in actual use: During normal processing, as shown in Figure 3, it is the positioning angle of the fixed bearing seat 60 , the control element issues an instruction to make the control valve input oil pressure from the first oil pressure passage 11, and the oil pressure accumulated in the first oil pressure space 23 lifts the outer ring seat 20, and drives the fixed-angle lower gear plate 31 to mesh with the fixed angle. Angle upper toothed plate 32, such that the fixed-angle toothed plate set 30 completes the meshing and will remain in the meshing state during the machining process; and when the positioning angle of the bearing seat 60 is to be adjusted, it must be switched from the meshing state of the fixed-angle toothed plate set 30 To be meshed by the drive chainring set 50, firstly, the control element issues an instruction, so that the control valve first inputs oil pressure from the second oil pressure passage 21, so that the oil pressure in the second oil pressure space 42 lifts the inner ring seat 40, and then Drive and drive the lower toothed disc 51 to mesh with the driven upper toothed disc 52. At this time, as shown in the 4th figure, the fixed-angle toothed disc group 30 and the driving toothed disc group 50 are in the meshing state, and keep in this state for a predetermined period of time ( In this embodiment, it is 1 to 3 seconds), and then order the control valve to release the oil pressure from the first oil pressure passage 11, so that the outer ring seat 20 sinks to release the meshing relationship of the fixed-angle toothed disc group 30, as As shown in Figure 5, only the drive chainring group 50 is in the meshing state, and the rotation of the driving chainring group 50 can jointly rotate the bearing seat 60 to a predetermined positioning angle; and when the angle adjustment of the bearing seat 60 is completed, the driving chainring When the meshing state of the group 50 is switched to meshing with the fixed-angle chainring group 30, first, the control element first issues an instruction to make the control valve input hydraulic pressure from the first oil pressure passage 11, so that the oil pressure in the first oil pressure space 23 is raised. The outer ring seat 20 further drives the fixed-angle lower toothed disc 31 to mesh with the fixed-angle upper toothed disc 32. At this time, as shown in FIG. Keep this state for a predetermined period of time (1 to 3 seconds in this embodiment), and then the control unit issues an instruction to make the control valve release the oil pressure from the second oil pressure passage 21, so that the inner ring seat 40 sinks to release the pressure. The meshing relationship of the driving chainring set 50, as shown in Figure 3, only the fixed-angle toothing plate set 30 is in the meshing state, so that the positioning angle of the bearing seat 60 remains fixed before reprocessing.

It is worth mentioning that when it is necessary to adjust the positioning angle of the bearing seat 60 and switch to the meshing relationship of the drive chainring set 50, as shown in FIG. Pushed by the pressure to lift, the reset element 44 located between the bump 25 and the convex portion 43 is squeezed by the lift of the inner ring seat 40, and begins to deform and accumulate elastic restoring force. When the angle of the bearing seat 60 is adjusted and Switch back to the meshing relationship of the fixed-angle toothed disc set 30, as shown in Figure 3, the inner ring seat 40 sinks due to the oil pressure in the second oil pressure space 42 leaking, originally applied to the reset element 44 and connected with the elastic When the external force that the restoring force cancels each other is released, the elastic restoring force pushes the inner ring seat 40 to return to the second shoulder 41 of the outer ring seat 20 .

Other structural elements that are not described in detail in the foregoing description are all based on the positioning mechanism of the machine tool accessory clamp seat of the conventional technology, and the relevant structural features are well known to those with ordinary skills in the relevant fields of this creation, so they will not be repeated here.

Through the clamp seat positioning mechanism 1 of the machine tool accessory of this invention, the control unit controls the input and release of the oil pressure in the first oil pressure passage 11 and the second oil pressure passage 21 respectively, so that the engagement or disengagement process of the two toothed disc groups They are independent of each other. In this way, during the process of switching the meshing relationship, at least one set of toothed discs will remain meshed, and the positioning effect of the bearing seat 60 will be obtained, so as to solve the problem of idle travel during the switching process in the conventional technology. The bearing seat 60 will reduce the risk of deviation due to uneven self-weight or excessive weight of accessories, so that this invention has the effect of improving machining accuracy.

However, the disclosure of the above embodiments is only used to illustrate this creation, not to limit this creation, and any replacement of equivalent components should still fall within the scope of this creation.

To sum up, those skilled in the art can understand that this creation can indeed achieve the above-mentioned purpose, and it actually complies with the provisions of the Patent Law, so they should file an application according to the law.

1: Clamp seat positioning mechanism for machine tool accessories

10: Base

11: The first oil pressure channel

20: Outer ring seat

21: The second oil pressure channel

23: The first oil pressure space

25: Bump

30: Fixed-angle chainring set

31: fixed angle lower gear

32: fixed angle upper gear plate

40: inner ring seat

42: The second oil pressure space

43: convex part

50: Drive chainring set

51: drive the lower chainring

52: Drive the upper chainring

60: bearing seat

61: round hole

62: Guide pin

Claims (5)

A clamp seat positioning mechanism for machine tool accessories, comprising: A base, which is annular and provided with a first oil pressure passage, and a first recess is recessed on the inner edge of the top side of the base; An outer ring seat is sheathed in the base so as to be relatively movable, and a first shoulder extends from the top outer edge of the outer ring seat, and the first shoulder and the first recess jointly form a first The oil pressure space is used to store the oil pressure input from the first oil pressure channel, the inner edge of the top side of the outer ring seat is recessed with a second recess, and the outer ring seat is also provided with a second oil pressure channel; The fixed-angle toothed disc set includes a certain-angle lower toothed plate and a correspondingly arranged certain-angle upper toothed plate. The fixed-angle lower toothed plate is fixed on the top surface of the outer ring seat and can be driven by the outer ring seat. Engagement of the upper toothed disc at a fixed angle; An inner ring seat is sheathed in the outer ring seat so as to be relatively movable, and a second shoulder is extended from the top outer edge of the inner ring seat, and the second shoulder and the second recess jointly form a second an oil pressure space, used to store the oil pressure input from the second oil pressure channel; A driving chainring set includes a driving lower toothing plate and a correspondingly arranged driving upper toothing plate. The driving lower toothing plate is fixed on the top surface of the inner ring seat and can be driven with the driving upper toothing plate by the inner ring seat. toothed disc meshing; A bearing seat for clamping the accessories of the machine tool, the bearing seat is sleeved in the inner ring seat and can rotate together with the inner ring seat; and A control unit is used to switch the meshing state of the fixed-angle toothed set and the driving toothed set. When switching from the meshing state of the fixed-angle toothed set to the driving toothed set, the second The oil pressure is input from the oil pressure channel, so that the oil pressure in the second oil pressure space lifts the inner ring seat, and then drives the lower driving toothed plate to mesh with the upper driving toothed plate. The oil pressure channel releases the oil pressure, causing the outer ring seat to sink to release the meshing relationship of the fixed-angle toothed set; and when the meshing state of the driving toothed set is switched to the fixed-angle toothed set , first input oil pressure from the first oil pressure passage, so that the oil pressure in the first oil pressure space lifts the outer ring seat, and then drives the fixed-angle lower toothed disc to mesh with the fixed-angle upper toothed disc, and wait for a predetermined period of time After time elapses, the oil pressure is released from the second oil pressure passage, so that the inner ring seat sinks to release the meshing relationship of the drive chainring set. The positioning mechanism for the clamping seat of the machine tool accessory as described in claim 1, wherein a plurality of circular holes arranged around the inner ring seat and the bearing seat are jointly formed, and a guide pin is provided in each of the plurality of circular holes , so that the bearing seat can only slide up and down relative to the inner ring seat, and cannot rotate relative to the inner ring seat. According to the positioning mechanism of the machine tool accessory clamp seat described in claim 1, a protrusion is provided on the inner edge of the top side of the outer ring seat, and a protrusion is provided on the top surface of the inner ring seat oppositely, and the protrusion and the protrusion There is a reset element between the parts. The positioning mechanism for the clamp seat of the machine tool accessory according to claim 1, wherein the inlet end of the first oil pressure channel is opened on the bottom surface of the base, and the outlet end is connected to the first oil pressure space. The positioning mechanism for the clamp seat of the machine tool accessory according to claim 1, wherein the inlet end of the second oil pressure channel is opened on the bottom surface of the outer ring seat, and the outlet end is connected to the second oil pressure space.

Images