A double station exchange bench

Abstract

The application relates to a double-station exchange workbench and belongs to the technical field of numerical control machine tools, which comprises an exchange plate, a feeding table and a discharging table fixed on the exchange plate at intervals, a fixing frame arranged below the exchange plate and corresponding to the feeding table and the discharging table, a power mechanism, a lifting assembly and a rotating assembly, the power mechanism is fixed on the fixing frame and has output shaft A and output shaft B which are perpendicular to the exchange plate, the lifting assembly is transmissionally connected to the output shaft A, and the rotating assembly is transmissionally connected to the output shaft B. The cam of the lifting assembly and the intermittent gear C of the rotating assembly are respectively sleeved on the output shaft A and the output shaft B of one power mechanism, the exchange plate can be periodically and intermittently lifted and rotated, the exchange plate is alternately pushed to lift and rotate, the 'lifting-rotating-lowering' action is continuously realized, the positions of the feeding table and the discharging table are exchanged, the structure of the double-station exchange workbench is simplified, the feeding and discharging time is saved, and the machining efficiency of the machine tool is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of numerical control machine tools, in particular to a double-station exchange workbench. BACKGROUND

[0002] With the rapid development of modern manufacturing technology, in order to improve the processing efficiency, an exchange workbench for reducing clamping time appears. The double-station exchange workbench is an important component to ensure the continuous operation of the equipment. The exchange workbench is generally divided into three parts: an exchange mechanism, a numerical control rotary table for equipment processing, and a manual clamping loading table. The exchange mechanism can rotate 180° under system control to realize the automatic exchange of the two trays of the numerical control rotary table part and the manual loading table part, achieve high exchange accuracy, enable the clamping of workpieces to be processed, the unloading of finished products, and the machining to be synchronized, greatly save auxiliary time, and improve the processing efficiency of the machine tool.

[0003] The action flow of the double-station exchange workbench is "lift up-rotate-lower down", but the current mechanism rotation and lifting and lowering are driven by two sets of mechanisms. For example, in the invention patent with the patent number 201710898869.6 and the patent name "double-station exchange workbench", the rotation mainly uses gear rack, worm gear, etc., and the lifting and lowering is mainly driven by a hydraulic cylinder. Although the accuracy is high, the structure is complex and the structure size is large. At the same time, the current exchange mechanism does not support wiring and air or oil pipes, and the clamping of the workpiece is manual clamps, which cannot apply automatic clamps, greatly increasing the difficulty of clamping.

[0004] Therefore, how to design a double-station exchange workbench with simple structure, small size, and only a single power source to continuously complete the "lift up-rotate-lower down" action is a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] The present application provides a double-station exchange workbench to solve the technical problem of the existing double-station exchange workbench structure being too complex.

[0006] The technical solution of the present application to solve the above technical problem is as follows: a double-station exchange workbench, comprising: an exchange plate, the exchange plate is fixed with a loading table and a discharging table at intervals, further comprising: a fixed frame arranged below the exchange plate corresponding to the loading table and the discharging table, a power mechanism, a lifting assembly, and a rotating assembly,

[0007] The power mechanism is fixed on the fixed frame and has an output shaft A and an output shaft B perpendicular to the exchange plate on it;

[0008] The lifting assembly comprises a piston rod, a cam and a mover, the top end of the piston rod is fixed on the bottom surface of the exchange plate, the cam is sleeved on the output shaft A, and the mover is arranged on the fixed frame and has a top surface which is inclined upward from the direction away from the cam to the direction close to the cam, the inclined surface of the mover is in sliding contact with the bottom end of the piston rod, and the side surface of the mover is in sliding contact with the outer surface of the cam, so that the mover is periodically and intermittently reciprocated to realize the periodic and intermittent lifting of the exchange plate.

[0009] The rotating assembly comprises a rotating shaft, an intermittent gear C and an intermittent gear D, the rotating shaft is arranged in parallel with the piston rod and has a top end fixed on the bottom surface of the exchange plate, the intermittent gear C is sleeved on the output shaft B, and the intermittent gear D is sleeved on the rotating shaft and is in meshing connection with the intermittent gear C, so that the exchange plate is rotated when the exchange plate is lifted intermittently, and the periodic and intermittent rotation of the exchange plate is realized.

[0010] The beneficial effects of the present application are that the cam of the lifting assembly and the intermittent gear C of the rotating assembly are respectively sleeved on the output shaft A and the output shaft B of a power mechanism, the exchange plate can be periodically and intermittently lifted and rotated, the exchange plate is alternately lifted and rotated, the "lifting-rotating-falling" action is continuously realized, the positions of the feeding table and the discharging table are exchanged, the structure of the double-station exchange workbench is simplified, the feeding and discharging time is saved, and the machining efficiency of the machine tool is improved.

[0011] The lifting action principle of the double-station exchange workbench is described as follows:

[0012] The side surface and the top surface of the mover are respectively in sliding contact with the outer surface of the cam and the bottom end of the piston rod, the top surface of the mover is arranged to be inclined upward from the direction away from the cam to the direction close to the cam, when the cam (the cam is a structure in the prior art, and the outer surface of the cam comprises an outer convex arc surface and an inner concave arc surface) rotates, ① the inner concave arc surface of a part of the cam pushes the mover to slide away from the cam and pushes the piston rod to move upward, ② the outer convex arc surface of the cam maintains the mover at a predetermined position for a period of time (at the same time, the piston rod is at the highest position), and ③ the inner concave arc surface of another part of the cam loses the pushing power on the mover, at this time, the piston rod also loses the pushing power for upward movement, and is affected by the pressure of the exchange plate, the feeding table and the discharging table and its own gravity, so as to push the mover to slide close to the cam, so as to restore the initial position of the mover, and the periodic and intermittent reciprocating movement of the mover is realized, and the periodic and intermittent lifting of the exchange plate is completed.

[0013] The rotating action principle of the double-station exchange workbench is described as follows:

[0014] First, the intermittent gear C (existing structure, intermittent gear is also called incomplete gear, only a few teeth on the outer wall) is sleeved on the output shaft B, and then the intermittent gear D (existing structure, intermittent gear is also called incomplete gear, only a few teeth on the outer wall) is driven and sleeved on the rotating shaft. Since the intermittent gear D is connected with the intermittent gear C, the rotating shaft can be driven to rotate during the intermittent lifting of the exchange plate, and the periodic intermittent rotation of the rotating shaft is realized. Since the top end of the rotating shaft is fixed on the bottom surface of the exchange plate, the periodic intermittent rotation of the exchange plate can be completed synchronously.

[0015] On the basis of the above technical scheme, the present application can also be improved as follows.

[0016] Further, the exchange plate comprises a supporting plate and a rotating disc, the feeding table and the discharging table are fixed on the supporting plate, the rotating disc is located between the feeding table and the discharging table and its top surface is fixed on the bottom surface of the supporting plate, the fixed frame, the power mechanism, the lifting assembly and the rotating assembly are all located below the rotating disc, and the top end of the piston rod and the top end of the rotating shaft are fixed on the bottom surface of the rotating disc.

[0017] Further, the power mechanism comprises a motor and a double-output-shaft reducer, the motor and the double-output-shaft reducer are both fixed on the fixed frame, and the output shaft of the motor is in transmission connection with the input shaft of the double-output-shaft reducer, and the output shaft A and the output shaft B are two output shafts of the double-output-shaft reducer.

[0018] Further, the lifting assembly further comprises a rotating wheel E and a rotating wheel F, the rotating wheel E is rotationally connected on the side surface of the follower corresponding to the cam and its outer wheel surface is in rolling connection with the outer wheel surface of the cam, and the rotating wheel F is rotationally connected on the bottom end of the piston rod and rolls on the top surface of the follower.

[0019] The above further beneficial effects are: first, the rotating wheel E is rotationally connected on the side surface of the follower and in rolling connection with the outer wheel surface, and then the rotating wheel F is rotationally connected on the bottom end of the piston rod and in contact with the follower, which can reduce the friction between the follower, the cam and the piston rod and improve the smoothness of the periodic intermittent reciprocating sliding of the follower.

[0020] Further, it further comprises a sliding rail and a sliding block, the sliding rail is arranged along the sliding direction of the follower and fixed on the fixed frame, and the sliding block is sliding on the sliding rail and fixed on the follower.

[0021] The above further beneficial effects are: the sliding block is fixed on the follower and sliding on the sliding rail, which can guide the sliding direction of the follower and improve the stability of the periodic intermittent lifting of the exchange plate.

[0022] Further, the lifting assembly further comprises a reset spring, which is arranged along the sliding direction of the moving element and has one end fixed on the fixed frame and the other end fixed on the moving element.

[0023] The further beneficial effect of the above is that the two ends of the reset spring are fixed on the fixed frame and the moving element respectively, and the reset spring is arranged along the sliding direction of the moving element, so that the moving element can be pulled to move towards the cam after the cam loses the driving force for the moving element, and the initial position of the moving element is restored.

[0024] Further, the piston rod, the rotating wheel F, the sliding rail, the sliding block and the reset spring are all two relatively arranged.

[0025] Further, the rotating assembly further comprises a plurality of splines, the intermittent gear C is arranged on the fixed frame and has a plurality of splines arranged on the hole wall of the shaft hole in the circumferential direction, the plurality of splines are arranged along the axial direction of the rotating shaft and pass through the top end and the bottom end of the intermittent gear C, and the plurality of splines are fixed on the outer circumferential wall of the rotating shaft in the circumferential direction and slide in the plurality of splines respectively, so that the position of the intermittent gear C is kept unchanged and the transmission relationship between the rotating shaft and the intermittent gear C is maintained after the rotating shaft moves upwards with the exchange plate.

[0026] The further beneficial effect of the above is that the plurality of splines on the rotating shaft slide in the plurality of splines on the hole wall of the shaft hole of the intermittent gear C, so that the position of the intermittent gear C is kept unchanged and the transmission relationship between the rotating shaft and the intermittent gear C is maintained after the exchange plate is lifted.

[0027] Further, the exchange plate is provided with a wire pipe laying hole, the rotating shaft is a hollow shaft, and the wire pipe laying hole is arranged opposite to the inner hole of the rotating shaft.

[0028] The further beneficial effect of the above is that the oil pipe or wire pipe is laid in the wire pipe laying hole of the rotating shaft, so that the clamp on the feeding table or the discharging table can be provided with electric energy or hydraulic energy, the labor intensity is reduced, and the automation level of clamping the workpiece on the feeding table or the discharging table is improved. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a front view of the structure of the double-station exchange workbench of the application;

[0030] Figure 2 It is a rear view of the structure of the double-station exchange workbench of the application;

[0031] Figure 3 It is a right view of the structure of the fixed frame, the power mechanism, the lifting assembly and the rotating assembly of the double-station exchange workbench of the application;

[0032] Figure 4 It is the left view stereoscopic structure schematic view of the fixed frame, power mechanism, lifting assembly and rotating assembly in a double-station exchange workbench of the present application;

[0033] Figure 5 It is the right view stereoscopic structure schematic view of the power mechanism, lifting assembly and rotating assembly in a double-station exchange workbench of the present application;

[0034] Figure 6 It is the stereoscopic structure schematic view of the cam and rotating wheel E in a double-station exchange workbench of the present application.

[0035] In the drawings, the component list represented by each reference numeral is as follows:

[0036] 1, exchange plate, 11, supporting plate, 12, rotating disc, 13, wire pipe laying hole, 2, fixed frame, 3, power mechanism, 31, motor, 32, double-output shaft speed reducer, 4, lifting assembly, 41, piston rod, 42, cam, 43, moving part, 44, rotating wheel E, 45, rotating wheel F, 46, sliding rail, 47, sliding block, 48, return spring, 5, rotating assembly, 51, rotating shaft, 52, intermittent gear C, 53, intermittent gear D, 54, spline, 6, feeding table, 7, discharging table. DETAILED DESCRIPTION

[0037] The principles and characteristics of the present application are described below in combination with the drawings, and the examples are only used to explain the present application and are not used to limit the scope of the present application.

[0038] As shown in Figure 1 , Figure 2 and Figure 3 , a double-station exchange workbench comprises: an exchange plate 1, an upper feeding table 6 and a lower discharging table 7 are fixed on the exchange plate 1 at intervals, and further comprises: a fixed frame 2, a power mechanism 3, a lifting assembly 4 and a rotating assembly 5 arranged between the upper feeding table 6 and the lower discharging table 7 below the exchange plate 1,

[0039] The power mechanism 3 is fixed on the fixed frame 2 and has an output shaft A and an output shaft B perpendicular to the exchange plate 1 on it;

[0040] The lifting assembly 4 comprises a piston rod 41, a cam 42 and a moving part 43, the top end of the piston rod 41 is fixed on the bottom surface of the exchange plate 1; the cam 42 is sleeved on the output shaft A; the moving part 43 is arranged on the fixed frame 2 and its top surface is a slope surface inclined upward from far away from the cam 42 to close to the cam 42, the slope surface is in sliding contact with the bottom end of the piston rod 41, and the side surface is in sliding contact with the outer surface of the cam 42, so as to push the moving part 43 to periodically and intermittently slide back and forth, thereby achieving the periodic and intermittent lifting of the exchange plate 1;

[0041] The rotating assembly 5 comprises a rotating shaft 51, an intermittent gear C52 and an intermittent gear D53. The rotating shaft 51 is arranged at intervals with the piston rod 41 and the top end of the rotating shaft 51 is fixed to the bottom surface of the exchange plate 1. The intermittent gear C52 is sleeved on the output shaft B. The intermittent gear D53 is sleeved on the rotating shaft 51 and is in meshing connection with the intermittent gear C52, so as to drive the exchange plate 1 to rotate when the exchange plate 1 is lifted intermittently, thereby realizing the periodic intermittent rotation of the exchange plate 1.

[0042] As shown in Figure 2 some specific embodiments, the exchange plate 1 can comprise a supporting plate 11 and a rotating disc 12. The feeding table 6 and the discharging table 7 are fixed at intervals on the supporting plate 11. The rotating disc 12 is located between the feeding table 6 and the discharging table 7 and the top surface of the rotating disc 12 is fixed to the bottom surface of the supporting plate 11. The fixed frame 2, the power mechanism 3, the lifting assembly 4 and the rotating assembly 5 are all located below the rotating disc 12. The top end of the piston rod 41 and the top end of the rotating shaft 51 are fixed at intervals to the bottom surface of the rotating disc 12.

[0043] As shown in Figure 3 some specific embodiments, the power mechanism 3 can comprise a motor 31 and a double-output-shaft speed reducer 32. The motor 31 and the double-output-shaft speed reducer 32 are both fixed on the fixed frame 2 and the output shaft of the motor 31 is in driving connection with the input shaft of the double-output-shaft speed reducer 32. The output shaft A and the output shaft B are two output shafts of the double-output-shaft speed reducer 32.

[0044] As shown in Figure 5 some specific embodiments, the lifting assembly 4 can further comprise a rotating wheel E44 and a rotating wheel F45. The rotating wheel E44 is in rotating connection on the side surface of the cam 42 corresponding to the moving part 43 and the outer wheel surface of the rotating wheel E44 is in rolling connection with the outer wheel surface of the cam 42. The rotating wheel F45 is in rotating connection with the bottom end of the piston rod 41 and rolls on the top surface of the moving part 43.

[0045] As shown in Figure 3 some specific embodiments, the lifting assembly 4 further comprises a sliding rail 46 and a sliding block 47. The sliding rail 46 is arranged along the sliding direction of the moving part 43 and is fixed on the fixed frame 2. The sliding block 47 is in sliding on the sliding rail 46 and is fixed on the moving part 43.

[0046] As shown in Figure 3 some specific embodiments, the lifting assembly 4 can further comprise a return spring 48. The return spring 48 is arranged along the sliding direction of the moving part 43 and one end of the return spring 48 is fixed on the fixed frame 2 and the other end of the return spring 48 is fixed on the moving part 43.

[0047] Specifically, the piston rod 41, the rotating wheel F45, the sliding rail 46, the sliding block 47 and the return spring 48 can all be two relatively arranged.

[0048] As shown in Figure 4As shown in the drawings, in some embodiments, the rotating assembly 5 can further include a plurality of splines 54, the intermittent gear C52 is rotatable on the fixed frame 2 and the hole wall of the shaft hole is provided with a plurality of circumferentially distributed spline grooves, the plurality of spline grooves are arranged in the axial direction of the rotating shaft 51 and pass through the top end and the bottom end of the intermittent gear C52; the plurality of splines 54 are fixed on the outer circumferential wall of the rotating shaft 51 in a circumferential interval and are respectively slid in the plurality of spline grooves, so that after the rotating shaft 51 moves upward with the exchange plate 1, the position of the intermittent gear C52 is kept unchanged and the transmission relationship between the rotating shaft 51 and the intermittent gear C52 is maintained.

[0049] As shown in the drawings, Figure 1 , Figure 3 and Figure 4 in some embodiments, the exchange plate 1 can be provided with a wire pipe laying hole 13, the rotating shaft 51 is a hollow shaft, and the wire pipe laying hole 13 is arranged opposite to the inner hole of the rotating shaft 51.

[0050] The above is only the preferred embodiment of the present application, and is not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dual station swap station comprising: The utility model relates to a kind of exchange plate (1), and the upper feeding table (6) and the lower feeding table (7) are fixed with interval on the exchange plate (1), it is characterized by further comprising: fixed frame (2), power mechanism (3), lifting assembly (4) and rotating assembly (5) are arranged between the upper feeding table (6) and the lower feeding table (7) corresponding to the fixed frame (2) below the exchange plate (1), The power mechanism (3) is fixed on the fixed frame (2), and has output shaft A and output shaft B perpendicular to the exchange plate (1) on it; The lifting assembly (4) includes piston rod (41), cam (42) and follower (43), the top end of the piston rod (41) is fixed on the bottom surface of the exchange plate (1);The cam (42) is sleeved on the output shaft A;The follower (43) is placed on the fixed frame (2), and the top surface thereof is inclined surface that is inclined upward in turn from the direction away from the cam (42) to the direction close to the cam (42), the inclined surface thereof is in sliding contact with the bottom end of the piston rod (41), and the side surface thereof is in sliding contact with the outer wheel surface of the cam (42), to push the follower (43) to reciprocate periodically intermittently, realize the periodic intermittent lifting of the exchange plate (1); The rotating assembly (5) includes rotating shaft (51), intermittent gear C (52) and intermittent gear D (53), the rotating shaft (51) is arranged with interval with the piston rod (41), and the top end thereof is fixed on the bottom surface of the exchange plate (1);The intermittent gear C (52) is sleeved on the output shaft B;The intermittent gear D (53) is sleeved on the rotating shaft (51) and is engagedly connected with the intermittent gear C (52), to push the exchange plate (1) to rotate when the exchange plate (1) is intermittently lifted, realize the periodic intermittent rotation of the exchange plate (1); The exchange plate (1) includes supporting plate (11) and rotating disc (12), the upper feeding table (6) and the lower feeding table (7) are fixed with interval on the supporting plate (11);The rotating disc (12) is located between the upper feeding table (6) and the lower feeding table (7), and the top surface thereof is fixed on the bottom surface of the supporting plate (11);The fixed frame (2), the power mechanism (3), the lifting assembly (4) and the rotating assembly (5) are all located below the rotating disc (12);The top end of the piston rod (41) and the top end of the rotating shaft (51) are fixed with interval on the bottom surface of the rotating disc (12).

2. A dual station exchange bench according to claim 1, characterised in that, The power mechanism (3) includes motor (31) and double-output-shaft speed reducer (32), the motor (31) and the double-output-shaft speed reducer (32) are both fixed on the fixed frame (2), and the output shaft of the motor (31) is in driving connection with the input shaft of the double-output-shaft speed reducer (32);The output shaft A and the output shaft B are two output shafts of the double-output-shaft speed reducer (32).

3. A dual station interchange work station according to claim 1 wherein, The lifting assembly (4) further comprises a rotating wheel E (44) and a rotating wheel F (45), the rotating wheel E (44) is rotatably connected on the side of the follower (43) corresponding to the cam (42) and the outer wheel surface thereof is rollingly connected with the outer wheel surface of the cam (42); the rotating wheel F (45) is rotatably connected on the bottom end of the piston rod (41) and rolls on the top surface of the follower (43).

4. A dual station exchange bench according to claim 3, characterised in that, Further comprising a slide rail (46) and a slide block (47), the slide rail (46) is arranged along the sliding direction of the follower (43) and is fixed on the fixed frame (2); the slide block (47) slides on the slide rail (46) and is fixed on the follower (43).

5. A dual station exchange bench according to claim 4, characterised in that, The lifting assembly (4) further comprises a reset spring (48), the reset spring (48) is arranged along the sliding direction of the follower (43) and one end thereof is fixed on the fixed frame (2) and the other end thereof is fixed on the follower (43).

6. A dual station exchange bench according to claim 5, characterised in that, The piston rod (41), the rotating wheel F (45), the slide rail (46), the slide block (47) and the reset spring (48) are all relatively arranged.

7. A dual station interchange work station according to claim 1 wherein, The rotating assembly (5) further comprises a plurality of splines (54), the intermittent gear C (52) rotates on the fixed frame (2) and the hole wall of the shaft hole thereof is provided with a plurality of circumferentially distributed spline grooves, the plurality of spline grooves are arranged in the axial direction of the rotating shaft (51) and pass through the top end and the bottom end of the intermittent gear C (52); the plurality of splines (54) are circumferentially spaced fixed on the outer circumferential wall of the rotating shaft (51) and respectively slide in the plurality of spline grooves, so that after the rotating shaft (51) moves upward with the exchange board (1), the position of the intermittent gear C (52) remains unchanged and the transmission relationship between the rotating shaft (51) and the intermittent gear C (52) is maintained.

8. A dual station interchange work station according to claim 1 wherein, The exchange board (1) is provided with a wire pipe laying hole (13), the rotating shaft (51) is a hollow shaft, and the wire pipe laying hole (13) is arranged opposite to the inner hole of the rotating shaft (51).

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