Variable-stroke hydraulic equally-dividing structure

Abstract

The utility model relates to the technical field of hydraulic rotating tables, in particular to a variable-stroke hydraulic equally-dividing structure which is installed in a hydraulic rotating table. The structure comprises an oil hydraulic cylinder, a piston, a rack, a cushion block, a connecting block, a seesaw A and a seesaw B, the pistons and the rack are installed in the oil hydraulic cylinder, the two pistons are connected to the left end and the right end of the rack respectively, the left end and the right end of the oil hydraulic cylinder are connected with the oil cylinder cover, the nut is arranged on the oil cylinder cover located at the left end of the oil hydraulic cylinder and connected with the oil cylinder cover in a screwed mode through threads, and the cushion block is arranged in the middle of the oil cylinder cover. And the cushion block is detachably connected with the screw cap. The cushion block is arranged in the middle of the oil cylinder cover, the cushion block is detachably connected with the nut, the size of the cushion block can be changed, the rotating angle of the fixed equally-divided hydraulic rotating table can be freely switched, and the fixed equally-divided angle of the hydraulic rotating table can be adjusted through the cushion blocks of different specifications and lengths.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic rotary tables, in particular to a variable stroke hydraulic equal division structure. Background Art

[0002] At present, with the rapid development of the manufacturing industry, multi-station combination machine tools have been widely used in the manufacturing industry as a high-efficiency and high-precision processing equipment. On multi-station combination special machines, it is possible to complete the processing of multiple stations with one clamping, thereby improving processing efficiency and reducing production costs. Multi-station combination special machines are widely used in the processing and production of various spare parts, such as automotive parts, molds, refrigeration compressor parts, precision instruments, etc. One of the core components of multi-station combination special machines is the high-precision rotary table, among which the multi-station hydraulic rotary table is widely used because the hydraulic rotary table has a simple structure and is easy to operate. At the same time, it combines the characteristics of the gear rack transmission mechanism and the three-piece plane clutch teeth to achieve fixed angle equal division and high segmentation accuracy.

[0003] The hydraulic rotary tables currently used on multi-station combination machines have fixed equally divided angles due to their structure, and the angle settings are fixed before leaving the factory. If you want to change the rotation angle later, you need to disassemble most of the parts for replacement and adjustment, which is impossible for ordinary operators to operate. On the other hand, the forward and reverse signal output of the conventional hydraulic rotary table will be confused due to the swing of the seesaw and other reasons, which makes the multi-station combination machine prone to collisions, alarms, etc. during use, resulting in an increase in the defective rate of parts produced and processed, and even damage to other parts of the machine tool.

[0004] Therefore, a variable stroke hydraulic equal division structure is needed to solve the above technical problems. Utility Model Content

[0005] The utility model is to overcome the deficiencies in the prior art and provide a variable stroke hydraulic equal division structure. The pad in the utility model is arranged in the middle position of the cylinder cover, and the pad and the nut are detachably connected. The utility model can switch the rotation angle of the fixed equal division hydraulic rotating table at will by changing the size of the pad, and the fixed equal division angle of the hydraulic rotating table can be adjusted by using pads of different specifications and lengths.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a variable stroke hydraulic equal division structure is installed inside the hydraulic rotary table;

[0007] The structure includes a hydraulic cylinder, a piston, a rack, a cushion block, a connecting block, a seesaw A and a seesaw B;

[0008] The piston and the rack are both installed inside the oil hydraulic cylinder. Two pistons are provided, and the two pistons are respectively connected to the left and right ends of the rack. The left and right ends of the oil hydraulic cylinder are both connected to oil cylinder covers. A nut is provided on the oil cylinder cover at the left end of the oil hydraulic cylinder. The nut and the oil cylinder cover are screwed together by threads. The cushion block is provided in the middle of the oil cylinder cover, and the cushion block and the nut are detachably connected.

[0009] The connecting plate is located below the oil hydraulic cylinder, and a fine motion shaft A and a fine motion shaft B are respectively installed on the connecting plate. A connecting block is fixedly connected to the upper end of the fine motion shaft A. The fine motion shaft A is connected to the turntable of the hydraulic rotary table through the connecting block, and a baffle is fixedly connected to the upper end of the fine motion shaft B;

[0010] The seesaw A is sleeved on the micro-motion shaft A, and a locking proximity switch and a releasing proximity switch are respectively arranged below the seesaw A; the seesaw B is sleeved on the micro-motion shaft B, and a right-hand proximity switch and a left-hand proximity switch are respectively arranged below the seesaw B;

[0011] The micro-motion shaft B is connected with a steel wire, and the steel wire is used to keep the seesaw B in a horizontal state.

[0012] Furthermore, the connecting plate is provided with an adjustment hole A and an adjustment hole B respectively, the rack is provided with an adjustment screw A and an adjustment screw B, and the baffle is provided between the adjustment screw A and the adjustment screw B.

[0013] Furthermore, the cushion block is any one of a six-station cushion block or an eight-station cushion block.

[0014] The advantages of the utility model are: the utility model provides a variable stroke hydraulic equal division structure, which has the following technical effects:

[0015] 1. The utility model includes a hydraulic cylinder, a piston, a rack, a cushion block, a connecting block, a seesaw A and a seesaw B, wherein the piston and the rack are installed inside the hydraulic cylinder, two pistons are provided, and the two pistons are respectively connected to the left and right ends of the rack. The rack and the piston can be controlled to move left and right inside the hydraulic cylinder through an external hydraulic system, and the rotation angle of the fixed equally divided hydraulic rotary table can be changed externally. The operation is simple, and the use scope of the fixed equally divided hydraulic rotary table is increased.

[0016] 2. The gasket in the utility model is arranged in the middle position of the cylinder cover, and the gasket and the nut are detachably connected. The utility model can switch the rotation angle of the fixed equally divided hydraulic rotating table at will by changing the size of the gasket, and the fixed equally divided angle of the hydraulic rotating table can be adjusted by using gaskets of different specifications and lengths.

[0017] 3. The utility model has a steel wire connected to the micro-motion shaft B, which can be used to balance the left and right seesaws B, so that the signal of the hydraulic rotary table is in a disconnected state during the rotation process, avoiding interference and affecting the use of the overall equipment. It can make the application of multi-station combination special machines more stable, improve productivity and reduce maintenance costs.

[0018] 4. The utility model is provided with an adjusting screw A and an adjusting screw B on the rack. When the rack stroke changes, the adjusting screw A or the adjusting screw B can be properly adjusted through the adjusting hole A and the adjusting hole B. By adjusting the distance between the two, the seesaw B can swing normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the top cross-sectional structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the connection structure between the eight-station cushion block and the cylinder cover in the utility model;

[0022] Figure 3 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 4 It is an enlarged structural schematic diagram of the rack in the utility model;

[0024] in:

[0025] 1. Hydraulic cylinder; 2. Piston; 3. Rack;

[0026] 4. Nut; 5. Six-position spacer; 6. Eight-position spacer;

[0027] 7. Cylinder cover; 8. Micro-motion shaft A; 9. Connecting block;

[0028] 10. Micro-motion axis B; 11. Baffle; 12. Seesaw A;

[0029] 13. Seesaw B; 14. Lock the proximity switch; 15. Release the proximity switch;

[0030] 16. Right-hand proximity switch; 17. Left-hand proximity switch; 18. Steel wire;

[0031] 19. Adjustment hole A; 20. Adjustment hole B; 21. Adjustment screw A;

[0032] 22. Adjust screw B; 23. Connecting plate. DETAILED DESCRIPTION

[0033] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] Figure 1 It is a schematic diagram of the top cross-sectional structure of the utility model. Figure 2 This is a schematic diagram of the connection structure between the eight-station cushion block and the cylinder cover in the utility model. Figure 3 This is a schematic diagram of the main structure of the utility model. Figure 4 FIG. 1 is an enlarged structural diagram of the rack in the utility model, as shown in FIG. Figure 1 , Figure 2 , Figure 3 and Figure 4 A variable stroke hydraulic equal division structure is shown, which is installed inside the hydraulic rotary table; the structure includes an oil hydraulic cylinder 1, a piston 2, a rack 3, a cushion block, a connecting block 9, a seesaw A12 and a seesaw B13;

[0037] like Figure 1 , Figure 2As shown, the piston 2 and the rack 3 in the utility model are both installed inside the oil hydraulic cylinder 1, and the piston 2 is provided with two, and the two pistons 2 are respectively connected to the left and right ends of the rack 3, and the left and right ends of the oil hydraulic cylinder 1 are connected with a cylinder cover 7, and the rack 3 and the piston 2 can be controlled by an external hydraulic system to move left and right inside the oil hydraulic cylinder 1, and a nut 4 is provided on the oil cylinder cover 7 located at the left end of the oil hydraulic cylinder 1, and the nut 4 is screwed with the oil cylinder cover 7 by a thread, and the cushion block is provided in the middle position of the oil cylinder cover 7, and the cushion block and the nut 4 are detachably connected; the utility model is provided with an external screw on the oil cylinder cover 7 The nut 4 matched therewith is provided with an inner thread. By replacing the pads with different station numbers and connecting with the nut 4, the stroke of the rack 3 in the oil hydraulic cylinder 1 can be adjusted, thereby changing the rotation angle of the turntable in the hydraulic rotary table. Specifically, the utility model can shorten the stroke of the rack 3 in the oil hydraulic cylinder 1 by adding the six-station pad 5, so that the rotation angle of the hydraulic rotary table is changed from 90 degrees to 60 degrees each time; under the same condition, the six-station pad 5 is removed and replaced with the eight-station pad 6, so that the rotation angle of the rotary table can be changed from 60 degrees to 45 degrees each time, that is, taking the right cylinder cover 7 as the reference, each time the stroke is changed, it is only necessary to dismantle and replace the pad;

[0038] The connecting plate in the utility model is located below the oil hydraulic cylinder 1, and a fine-motion shaft A8 and a fine-motion shaft B10 are respectively mounted on the connecting plate. A connecting block 9 is fixedly connected to the upper end of the fine-motion shaft A8. The fine-motion shaft A8 is connected to the turntable of the hydraulic rotary table through the connecting block 9, so that the piston 2 can be clamped or loosened, and the fine-motion shaft A8 can be swung through the connecting block 9; a baffle 11 is fixedly connected to the upper end of the fine-motion shaft B10; the function of the baffle 11 is to enable the fine-motion shaft B10 to swing left and right when the rack 3 moves left and right into position in the oil hydraulic cylinder 1.

[0039] like Figure 1 , Figure 2 and Figure 3As shown, the seesaw A12 in the utility model is sleeved on the micro-motion shaft A8, and a locking proximity switch 14 and a releasing proximity switch 15 are respectively arranged below the seesaw A12. When the hydraulic rotary table is clamped or released under the drive of the external hydraulic system, the seesaw A12 can be swung left and right to the locking proximity switch 14 or the releasing proximity switch 15 to output a signal; the seesaw B13 in the utility model is sleeved on the micro-motion shaft B10, and a right-hand proximity switch 16 and a left-hand proximity switch 17 are respectively arranged below the seesaw B13. Under the drive of the external hydraulic system, the rack 3 is moved, and the hydraulic rotary table The right-hand proximity switch and the left-hand proximity switch output the in-position signal. Due to the tolerance matching problem of the mechanical structure processing, it is easy to cause the right-hand or left-hand in-position signal to exist during the rotation of the rack 3, which is easy to cause the host computer to report an error. Therefore, the utility model is connected with a steel wire 18 on the micro-motion shaft B10. This steel wire 18 is easy to restore to its original shape after being bent through a special process. During the rotation of the hydraulic rotary table, the steel wire 18 can keep the seesaw B13 in a horizontal state, so that the right-hand proximity switch 16 and the left-hand proximity switch 17 are respectively in a no-signal state, thus ensuring the accuracy of the host computer receiving the signal.

[0040] like Figure 3 and Figure 4 As shown, the utility model is provided with adjustment holes A19 and adjustment holes B20 on the connecting plate, and adjustment screws A21 and adjustment screws B22 are provided on the rack 3. The baffle 11 is provided between the adjustment screws A21 and B22. When the rack 3 moves into position, the baffle 11 can be blocked by the adjustment screws A21 or B22, so that the baffle 11 drives the micro-motion shaft B10 and the seesaw B13 to swing left and right. When the stroke of the rack 3 changes, the adjustment screws A21 or B22 can be properly adjusted through the adjustment holes A19 and B20, and the distance between the two can be adjusted to make the seesaw B13 swing normally.

[0041] In summary, the utility model can change the stroke of the rack 3 in the hydraulic cylinder 1 by changing the gasket at the left cylinder cover 7, thereby changing the rotation angle of the hydraulic rotary table. The set steel wire 18 can balance the seesaw to avoid the problem of abnormal alarm of the host computer caused by unstable signal output. The spacing between the adjusting screws A21 and B22 on the rack 3 can be adjusted through the adjusting holes A19 and B20 to achieve normal swing of the seesaw B13.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some or all of the technical features therein can be replaced by equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A variable stroke hydraulic equal division structure installed inside the hydraulic rotary table; It is characterized in that The structure comprises a hydraulic cylinder (1), a piston (2), a rack (3), a cushion block, a connecting block (9), a seesaw A (12) and a seesaw B (13); The piston (2) and the rack (3) are both installed inside the oil hydraulic cylinder (1). Two pistons (2) are provided. The two pistons (2) are respectively connected to the left and right ends of the rack (3). The left and right ends of the oil hydraulic cylinder (1) are both connected to a cylinder cover (7). A nut (4) is provided on the cylinder cover (7) at the left end of the oil hydraulic cylinder (1). The nut (4) and the cylinder cover (7) are screwed together by threads. The cushion block is provided in the middle position of the cylinder cover (7). The cushion block and the nut (4) are detachably connected. A connecting plate (23) is provided below the oil hydraulic cylinder (1), a fine-motion shaft A (8) and a fine-motion shaft B (10) are respectively mounted on the connecting plate (23), a connecting block (9) is fixedly connected to the upper end of the fine-motion shaft A (8), the fine-motion shaft A (8) is connected to the turntable of the hydraulic rotary table via the connecting block (9), and a baffle (11) is fixedly connected to the upper end of the fine-motion shaft B (10); The seesaw A (12) is sleeved on the micro-motion shaft A (8), and a locking proximity switch (14) and a releasing proximity switch (15) are respectively arranged below the seesaw A (12); the seesaw B (13) is sleeved on the micro-motion shaft B (10), and a right-hand proximity switch (16) and a left-hand proximity switch (17) are respectively arranged below the seesaw B (13); The micro-motion shaft B (10) is connected with a steel wire (18), and the steel wire (18) is used to keep the seesaw B (13) in a horizontal state.

2. A variable stroke hydraulic equal division structure according to claim 1, It is characterized in that The connecting plate (23) is provided with an adjustment hole A (19) and an adjustment hole B (20), respectively; the rack (3) is provided with an adjustment screw A (21) and an adjustment screw B (22); and the baffle (11) is provided between the adjustment screw A (21) and the adjustment screw B (22).

3. A variable stroke hydraulic equal division structure according to claim 1, It is characterized in that The cushion block is any one of a six-station cushion block (5) or an eight-station cushion block (6).

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