Rotary hydraulic clamp

Abstract

The utility model relates to a rotary hydraulic clamp which comprises a base, the base is of a rectangular structure, a set of four-axis rotary tables and a set of disc tail bases are arranged at the positions, close to the left end and the right end, of the top of the base respectively, and rotary table flange plates of the four-axis rotary tables correspond to tail base flange plates of the disc tail bases. The rotary table flange plate and the tailstock flange plate are each fixedly provided with a fixing plate, and the two fixing plates are symmetrical to each other. A bridge plate is fixedly connected between the two sets of fixing plates, the top face of the bridge plate is a plane, at least two sets of symmetrical oil pressure mechanisms are arranged at the top of the bridge plate, and a workpiece to be machined is clamped between the two sets of oil pressure mechanisms. The rotary hydraulic clamp is matched with an external mechanical arm, so that automatic feeding and discharging can be realized, manpower is saved, the labor intensity of operators is reduced, the production efficiency is improved, and the production and processing benefits are effectively increased; and the phenomena of vibration and displacement of workpieces in the production and machining process are avoided, and the machining quality of products is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to lathe processing field especially, relate to a rotary hydraulic fixture. BACKGROUND

[0002] Numerical control machine tool is a kind of automatic machine tool equipped with program control system, can make machine tool action and process parts according to the program that has been programmed.Machine tool main machine is the main body of numerical control machine tool, it includes bed, pedestal, column, crossbeam, slide, workbench, spindle box, feed mechanism, tool rest and automatic tool changer etc.Mechanical components, it is the mechanical part that various cutting processes are automatically completed on numerical control machine tool.

[0003] In the process of machining through numerical control machine tool, workpiece is clamped and disassembled by artificial, and the operator clamps the workpiece to be processed on the chuck of machine tool, for some special class workpiece processing, such as complex structure workpiece processing of automobile cylinder, conventional chuck cannot be clamped and fixed, usually workpiece is locked on the specially-made adapter plate through screw, and then workpiece and adapter plate are locked, and then artificial carrying is carried out to machine tool and fixed on the workbench of machine tool through bolt, for multi-surface machining, repeated disassembly and installation are needed, the labor intensity of operator is relatively large, and work injury accident is prone to occur;And workpiece is sometimes required to be padded according to the requirement of workpiece height, and zero positioning mechanism is positioned, work intensity is prone to weaken, tool vibration is prone to occur in the machining process of machine tool, product is damaged, product quality is affected, and in addition, this clamping mode consumes manpower, and artificial disassembly mode causes machining time to be prolonged, and production efficiency is affected. SUMMARY

[0004] The utility model wants to solve the technical problem to provide a workpiece positioning accurate, can effectively prevent the rotary hydraulic fixture that workpiece vibration and displacement phenomenon appear in the machining process.

[0005] In order to solve the above technical problem, the utility model is realized through the following technical schemes:

[0006] A rotary hydraulic fixture, including base, the base is rectangular structure, and the top part is close to the part of left and right two ends respectively set up one group four axle rotary table and one group disc tailstock, and the rotary table flange plate of four axle rotary table and the tailstock flange plate of disc tailstock correspond to each other, and the rotary table flange plate and tailstock flange plate all are fixed with a fixed plate, and two groups of fixed plate are mutually symmetrical;Bridge plate is fixedly connected between two groups of fixed plate, and the top surface of bridge plate is plane, and at least two groups of symmetrical oil pressure mechanisms are arranged on the top of bridge plate, and the workpiece to be processed is clamped between two groups of oil pressure mechanisms.

[0007] Preferably, the fixed plate is in "L" structure, which is composed of back plate and supporting plate; the supporting plate is integrally formed on the front of the back plate near the bottom; the end of the bridge plate is overlapped on the supporting plate and is fixed and connected together through bolts.

[0008] Preferably, the oil pressure mechanism comprises an oil cylinder, which is fixedly installed on the bridge plate through a fixed connecting seat; the oil cylinder is vertically arranged, the piston rod in the oil cylinder is vertically upward, and a connecting block is fixed on the piston rod near the upper end; a hinge column is arranged on the top of the fixed connecting seat and at the position of the rear end of the piston rod; a chuck is arranged above the top of the hinge column and the piston rod; the outside center of the chuck is hingedly connected with the upper end of the hinge column through a first connecting rod; the front end of the chuck is hingedly connected with the front end of the connecting block through a second connecting rod; the connecting block and the first connecting rod are hingedly connected through a third connecting rod.

[0009] Preferably, a guide positioning mechanism is arranged on the top of the bridge plate, which is between two groups of oil pressure mechanisms arranged symmetrically and is composed of a base and a positioning pin; the base is fixedly installed on the top of the bridge plate, and at least one pin hole is arranged on the top of the base; the positioning pin is inserted into the pin hole, and the top of the positioning pin is higher than the top of the pin hole.

[0010] Preferably, the guide positioning mechanism has two groups and is arranged symmetrically left and right.

[0011] Preferably, a hydraulic clamp is arranged on the top of the bridge plate, which is between two groups of oil pressure mechanisms arranged symmetrically, and the two clamp heads of the hydraulic clamp can be opened and closed in the horizontal direction.

[0012] Preferably, the oil pressure mechanism has four groups, and each two groups are arranged symmetrically left and right.

[0013] Preferably, a heightening block is arranged between the four-axis rotary table and the base and between the disc tail seat and the base.

[0014] Compared with the prior art, the rotary hydraulic clamp can reduce the assembly height of the workpiece, realize automatic feeding and discharging by cooperating with the external mechanical arm, save labor, reduce the labor intensity of the operator, realize automatic clamping and positioning of the workpiece through the hydraulic mechanism, facilitate loosening of the clamping and fixing of the workpiece, facilitate unloading, greatly reduce the processing time, improve the production efficiency, effectively increase the production and processing benefits, ensure the accuracy of the workpiece installation through the guide positioning mechanism and the hydraulic clamp, ensure that the workpiece does not vibrate and displace during the production and processing process, and ensure the processing quality of the product. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0016] Figure 1 is a schematic diagram of a three-dimensional structure of a rotary hydraulic clamp of the present application;

[0017] Figure 2 is a schematic diagram of a fixed plate structure in the rotary hydraulic clamp of the present application;

[0018] Figure 3 is a schematic diagram of a front shaft side of an oil pressure mechanism in the rotary hydraulic clamp of the present application;

[0019] Figure 4 is a schematic diagram of a back shaft side of the oil pressure mechanism in the rotary hydraulic clamp of the present application;

[0020] Figure 5 is a schematic diagram of a guide positioning mechanism structure in the rotary hydraulic clamp of the present application;

[0021] Figure 6 is a schematic diagram of a hydraulic clamp structure in the rotary hydraulic clamp of the present application;

[0022] Figure 7 is a schematic diagram of a structure after clamping a workpiece in the rotary hydraulic clamp of the present application.

[0023] In the drawings: 1, base; 11, cushioning block; 2, four-axis rotary table; 21, rotary table flange plate; 3, disc tailstock; 31, tailstock flange plate; 4, fixed plate; 41, back plate; 42, supporting plate; 5, bridge plate; 6, oil pressure mechanism; 61, oil cylinder; 611, piston rod; 62, fixed connecting seat; 63, hinged seat; 64, linking block; 65, chuck; 66, first connecting rod; 67, second connecting rod; 68, third connecting rod; 7, guide positioning mechanism; 71, base; 711, pin hole; 72, positioning pin; 8, hydraulic clamp; 9, workpiece. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0025] The following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the application. It should be noted that similar reference numbers and letters in the following drawings represent similar items, and therefore, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings. In the description of the embodiments of the application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are merely for the convenience of describing the application and simplifying the description, and therefore, cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, cannot be understood as limiting the application. In addition, the terms "first", "second" and the like are merely used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In addition, if the terms "horizontal", "vertical" and the like appear, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is relatively more horizontal than "vertical", and does not mean that the structure or component must be completely horizontal, but can be slightly inclined.

[0027] In the description of the embodiments of the application, "a plurality of" represents at least 2.

[0028] In the description of the embodiments of the application, it should also be noted that unless otherwise explicitly specified and limited, if the terms "provided", "installed", "connected", "connected" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication between the two elements inside. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0029] Embodiments

[0030] Please refer to the drawings of the specification Figure 1 and 7 , the drawings of the specification Figure 1 and 7The utility model discloses a rotary hydraulic clamp, install on the workstation of machine tool, cooperate the external mechanical arm and can realize the automatic clamping and unload of work piece, also convenient multi -faced work piece is under the condition of not disassembling and carries out the overturning, the continuous processing of machine tool is convenient, guarantees the machining accuracy of work piece, the rotary hydraulic clamp includes base 1, base 1 is rectangular structure, is thick plate spare part, and base 1 is fixedly installed on the workstation of machine tool through bolt, and the top of base 1 is close to the parts of left and right two ends and is provided with a group of four -axis turntable 2 and a group of disc tailstock 3 respectively, and four -axis turntable 2 and disc tailstock 3 are fixedly installed on base 1 through bolt, for some larger work piece, in order to avoid the interference with base 1 when rotating, can set up the pad high block 11 between four -axis turntable 2 bottom and base 1 and between disc tailstock 3 bottom and base 1, and the height of four -axis turntable 2 and disc tailstock 3 can be raised through pad high block 11, and the clamping use of larger work piece is convenient, the turntable flange plate 21 of four -axis turntable 2 and the tailstock flange plate 31 of disc tailstock 3 correspond to each other, and the center of turntable flange plate 21 of four -axis turntable 2 and the center of tailstock flange plate 31 of disc tailstock 3 are at the same horizontal height, and the center correspond to each other, and a fixed plate 4 is fixed on turntable flange plate 21 and tailstock flange plate 31, and two fixed plates 4 are fixedly connected on turntable flange plate 21 and tailstock flange plate 31 through bolt respectively, and the dismounting is convenient, and the fixed plate 4 of different size can be replaced according to the size difference of work piece, and the two fixed plates 4 on turntable flange plate 21 and tailstock flange plate 31 are symmetrical to each other, refer to the drawing of the utility model Figure 2 As shown in the description, the fixed plate 4 is "L" shaped structure, which is composed of back plate 41 and supporting plate 42; the back plate 41 is provided with connecting hole, and the back plate 41 is fixedly connected with the corresponding flange plate through bolt passing through the connecting hole on the front surface; the supporting plate 42 is located at the position close to the bottom of the front surface of the back plate 41, and is integrally formed; the two fixed plates 4 are fixedly connected with the bridge plate 5, and the bridge plate 5 is rectangular structure, and the upper and lower surfaces are plane, the end of the bridge plate 5 is stacked on the supporting plate 42 and is fixedly connected together through bolt, and a plurality of threaded connection holes are arranged on the supporting plate 42 along the length direction, the connecting hole is arranged on the bridge plate 5 close to the end, and the bridge plate 5 is fixedly connected with the threaded connection hole on the supporting plate 42 through bolt passing through the connecting hole on the end, which is convenient for dismounting the bridge plate 5 and the fixed plate 4; a plurality of threaded connection holes are arranged on the top surface of the bridge plate 5, which is convenient for mounting the tooling jig, at least two groups of oil pressure mechanisms 6 are arranged on the top of the bridge plate 5, and the two groups of oil pressure mechanisms 6 are symmetrically arranged on the left and right sides of the top surface of the bridge plate 5, and the work piece 9 to be processed is placed between the two groups of oil pressure mechanisms 6 and is clamped and fixed on both sides through the oil pressure device 6; the oil pressure device 6 can be flexibly arranged on the bridge plate 5 according to the structure of the work piece, so as to ensure the flexibility of clamping the work piece 9, refer to the drawing of the utility model Figure 1 and 7As shown in the embodiment, the oil pressure mechanism 6 has four groups, which are symmetrically arranged left and right in pairs, clamped on both sides of the workpiece 9, and ensures the stability of the clamping of the workpiece 9. In order to facilitate the automatic clamping and relaxation of the workpiece, refer to the description Figure 3 and 4 As shown in the embodiment, the oil pressure mechanism 6 includes a cylinder 61, which is fixedly installed on the bridge plate 5 through a fixed connecting seat 62, and the bridge plate 5 is provided with a socket hole for facilitating the embedding of the cylinder 61. The cylinder 61 is vertically arranged and embedded in the socket hole. The fixed connecting seat 62 is fixedly connected with the top of the cylinder 61, and the fixed connecting seat 62 is fixedly connected with the top of the bridge plate 5 through bolts. The piston rod 611 in the cylinder 61 is vertically upward. The fixed connecting seat 62 is provided with an engaging hole for facilitating the passing of the piston rod 611. The engaging hole is clearance fitted with the piston rod, and does not interfere with the up and down movement of the piston rod 611. The piston rod 611 is fixedly connected with an engaging block 64 near the upper end. The engaging block 64 is sleeved and fixed on the outside of the piston rod 61, and the engaging block 64 can move synchronously up and down with the piston rod 61. The fixed connecting seat 62 is provided with a hinge column 63 at the position of the rear end of the piston rod 611. The hinge column 63 is fixedly installed on the fixed connecting seat 62 through bolts. The hinge column 63 and the top of the piston rod 611 are provided with a chuck 65. The outside center of the chuck 65 is hingedly connected with the upper end of the hinge column 63 through a first connecting rod 66. Specifically, one end of the first connecting rod 66 is hingedly connected with the outside center of the chuck 65, and the other end is hingedly connected with the position near the upper end of the hinge column 63. The front end of the chuck 65 is hingedly connected with the front end of the engaging block 64 through a second connecting rod 67. Specifically, one end of the second connecting rod 67 is hingedly connected with the position near the front end of the side surface of the chuck 65, and the other end is hingedly connected with the position near the front end of the side surface of the engaging block 64. The engaging block 64 and the first connecting rod 64 are hingedly connected through a third connecting rod 68. Specifically, one end of the third connecting rod 68 is hingedly connected with the position near the rear end of the side surface of the engaging block 64, and the pin shaft of the end part penetrates the engaging block 64 and the piston rod 611 to fixedly connect the engaging block 64 and the piston rod 611 together. The other end of the third connecting rod 68 is hingedly connected with the position near the middle of the side surface of the first connecting rod 64. When the piston rod 611 drives the engaging block 64 to rise, it drives the chuck 65 to rise and lift up, and at the same time, the second connecting rod 67 drives the chuck 65 to move backward, which facilitates the separation of the clamped workpiece 9. When the piston rod 611 drives the engaging block 64 to descend, the third connecting rod 68 drives the first connecting rod 66 to pull the chuck, and through the second connecting rod 67, it pulls the chuck 65 forward, so as to realize the descent of the chuck 65 to the lower front end, which is used for clamping the workpiece 9.

[0031] In order to facilitate the position positioning of the workpiece 9 during clamping, according to the structural characteristics of the workpiece 9, a guide positioning mechanism 7 can be arranged on the top of the bridge plate 5.Figure 1 As shown in the drawings, in this embodiment, the guide positioning mechanism 7 has two groups, symmetrically arranged between the two groups of oil pressure mechanisms 6, and the two groups of guide positioning mechanisms 7 are symmetrically arranged left and right; refer to the drawings Figure 5 As shown in the drawings, the guide positioning mechanism 7 is composed of a base 71 and a positioning pin 72, the base 71 is fixedly installed on the top of the bridge plate 5 through bolts, convenient to disassemble and assemble, and at least one pin hole 711 is arranged on the top of the base 71, the positioning pin 72 is inserted into the pin hole 711, and the top of the positioning pin 72 is higher than the top of the pin hole 711, when the workpiece is installed, the groove hole at the bottom of the workpiece 9 can be correspondingly matched with the positioning pin 72 and sleeved together, and the workpiece is coarsely positioned.

[0032] In order to facilitate the workpiece 9 with a cavity at the bottom, refer to the drawings Figure 1 and 6 As shown in the drawings, the bridge plate 5 is provided with a hydraulic clamp 8 between the two groups of oil pressure mechanisms 6, the hydraulic clamp 8 has two clamp heads, and the two clamp heads can be opened and closed in the horizontal direction, after the cavity at the bottom of the workpiece is sleeved outside the hydraulic clamp 8, the two clamp heads at the top of the hydraulic clamp 8 are driven to open outward to realize the tensioning of the workpiece 9 at the bottom, and realize the fixation of the workpiece 9.

[0033] In this embodiment, the guide positioning mechanism 7 can cooperate with the workpiece 9 to coarsely position, the oil pressure mechanism 6 and the hydraulic clamp 8 can clamp and fix the workpiece to realize accurate positioning of the workpiece, after the workpiece is fixed on the bridge plate 5, the stability of the workpiece during machining is ensured, and vibration and displacement do not occur; when the side of the workpiece 9 needs to be machined, the bridge plate 5 is turned over through the four-axis rotary table 2 and the disc tail seat 3, and then the workpiece 9 on the bridge plate 5 is rotated, so that the workpiece 9 is conveniently rotated to the required machining angle for machining, and the machining efficiency is improved.

[0034] This rotary hydraulic clamp reduces the assembly height of the workpiece, cooperates with the external mechanical arm to realize automatic feeding and discharging, saves labor, reduces the labor intensity of the operator, realizes automatic clamping and positioning of the workpiece through the hydraulic mechanism, and also facilitates loosening the clamping and fixation of the workpiece, facilitates unloading, greatly reduces the machining time, improves the production efficiency, and effectively increases the production and processing benefits; the guide positioning mechanism and the hydraulic clamp ensure the accuracy of the workpiece installation, ensure that the workpiece does not vibrate and displace during production and processing, and ensure the processing quality of the product.

[0035] It should be emphasized that the above is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary hydraulic clamp characterized by: The system includes a base (1), which has a rectangular structure. A set of four-axis turntables (2) and a set of disc tailstocks (3) are respectively provided on the top of the base near the left and right ends. The turntable flange (21) of the four-axis turntable (2) corresponds to the tailstock flange (31) of the disc tailstock (3). A fixing plate (4) is fixed on both the turntable flange (21) and the tailstock flange (31). The two sets of fixing plates (4) are symmetrical to each other. A bridge plate (5) is fixedly connected between the two sets of fixing plates (4). The top surface of the bridge plate (5) is flat. At least two sets of symmetrical hydraulic mechanisms (6) are provided on its top. The workpiece (9) to be processed is clamped between the two sets of hydraulic mechanisms (6).

2. A rotary hydraulic clamp according to claim 1, wherein: The fixing plate (4) has an "L" shaped structure and is composed of a back plate (41) and a support plate (42). The support plate (42) is located on the front of the back plate (41) near the bottom and is integrally formed. The ends of the bridge plate (5) are stacked on the support plate (42) and are fixed together by bolts.

3. A rotary hydraulic clamp according to claim 1, wherein: The hydraulic mechanism (6) includes a hydraulic cylinder (61), which is fixedly mounted on the bridge plate (5) via a fixed connecting seat (62). The hydraulic cylinder (61) is vertically arranged, and the piston rod (611) inside the hydraulic cylinder (61) is vertically upward. A connecting block (64) is fixed on the upper part of the piston rod (611). A hinge column (63) is provided at the top of the fixed connecting seat (62) at the rear end of the piston rod (611). A chuck (65) is provided above the top of the hinge column (63) and the piston rod (611). The outer center of the chuck (65) is hinged to the upper end of the hinge column (63) via a first connecting rod (66). The front end of the chuck (65) is hinged to the front end of the connecting block (64) via a second connecting rod (67). The connecting block (64) is hinged to the first connecting rod via a third connecting rod (68).

4. A rotary hydraulic clamp according to claim 1, wherein: The bridge plate (5) is provided with a guide positioning mechanism (7) at the top. The guide positioning mechanism (7) is located between two sets of hydraulic mechanisms (6) arranged symmetrically. It consists of a base (71) and a positioning pin (72). The base (71) is fixedly installed on the top of the bridge plate (5). The top of the base (71) is provided with at least one pin hole (711). The positioning pin (72) is inserted into the pin hole (711), and the top of the positioning pin (72) is higher than the top of the pin hole (711).

5. A rotary hydraulic clamp according to claim 4, wherein: The guide positioning mechanism (7) has two sets, which are arranged symmetrically on the left and right.

6. A rotary hydraulic clamp according to claim 1, wherein: The bridge plate (5) is provided with a hydraulic clamp (8) on top. The hydraulic clamp (8) is located between two sets of symmetrically arranged hydraulic mechanisms (6). The two clamp heads of the hydraulic clamp (8) can open and close in the horizontal direction.

7. A rotary hydraulic clamp according to claim 1, wherein: The hydraulic mechanism (6) has four sets, arranged symmetrically in pairs.

8. A rotary hydraulic clamp according to claim 1, wherein: Elevating blocks (11) are provided between the bottom of the four-axis turntable (2) and the base (1) and between the bottom of the disc tailstock (3) and the base (1).

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