Combined hydraulic chuck cluster

Abstract

The utility model discloses a combined hydraulic chuck cluster which comprises a chuck base and a plurality of chuck assemblies fixedly installed on the chuck base. The chuck assembly comprises a chuck body, three clamping jaws and a connecting piece arranged in the chuck body. A plurality of hydraulic ejector rods are arranged on the chuck base and abut against the connecting piece, so that the connecting piece abuts against the three clamping jaws, and the three clamping jaws move towards the center of the chuck body. The connecting piece comprises a connecting block and three top blocks inserted into the connecting block; according to the combined hydraulic clamp, a plurality of hydraulic chucks are integrated, compared with a single hydraulic chuck structure, a plurality of products can be clamped at a time, hydraulic automatic clamping is achieved, the machining efficiency is effectively improved, the number of parts where tools are replaced and frequently disassembled and assembled is reduced, the labor intensity of workers is further reduced, and the combined hydraulic clamp is suitable for drilling machining of a driving shaft and also suitable for machining of a workpiece. And the device is also suitable for machining different types of disc and shaft products, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the field of tooling fixtures, in particular to a combined hydraulic chuck cluster. Background Art

[0002] The drive shaft of an existing tractor has multiple mounting holes. Using a three-jaw chuck to process a single piece takes 20 minutes per piece, which has low processing efficiency. In addition, the machine tool requires multiple tool changes, resulting in wasted motion and increased wear on the equipment, which cannot meet the growing production needs. It is necessary to design efficient tooling and fixtures to concentrate product replacement time, reduce tool changes, optimize tool paths, improve processing efficiency, and reduce labor intensity. Utility Model Content

[0003] The utility model provides a combined hydraulic chuck cluster, which can at least solve one problem pointed out in the background technology.

[0004] A combined hydraulic chuck cluster comprises a chuck base and a plurality of chuck assemblies fixedly mounted on the chuck base;

[0005] The chuck assembly includes a chuck body, three jaws, and a connecting piece arranged in the chuck body;

[0006] The chuck base is provided with a plurality of hydraulic push rods corresponding to the plurality of chuck assemblies one by one. The hydraulic push rods abut against the connecting piece, so that the connecting piece abuts against the three claws, and the three claws move toward the center of the chuck body.

[0007] Preferably, the connecting member includes a connecting block and three ejector blocks plugged into the connecting block, and the hydraulic ejector rod can abut against the connecting block and drive the connecting block to move axially along the chuck body;

[0008] The chuck body is provided with three slots for accommodating three claws respectively. The claw is provided with a guide inclined groove 1, which has a guide inclined surface. The guide inclined surface is located on the moving path of the ejector block. Under the action of the hydraulic ejector rod, the three ejector blocks respectively contact the three guide inclined surfaces, driving the three claws to retract inward to complete the fixation of the workpiece.

[0009] Preferably, a sliding groove is provided at the bottom of the clamping slot, a portion of the clamping claw extends into the sliding groove, and a return spring connected to the clamping claw is also installed in the sliding groove.

[0010] Preferably, the device further comprises an adjusting mechanism for adjusting the length of the top block extending outside the connecting block, the adjusting mechanism comprising:

[0011] Three inclined sliders, corresponding to the three top blocks respectively; and

[0012] An adjusting assembly, used for driving the three inclined slider assemblies to move toward corresponding top blocks;

[0013] A second guiding inclined groove is provided on the top block. Under the action of the adjusting assembly, the inclined sliding block can be inserted into the second guiding inclined groove, and the top block is moved axially along the chuck body.

[0014] Preferably, the adjustment assembly includes three cams corresponding to the three inclined sliders respectively, and a driving assembly for driving the three cams to rotate, the inclined sliders are inserted into a slider, and the slider is slidably arranged in the chuck body, and the cams will abut against the slider during rotation, causing the slider to slide and the inclined slider to be inserted into the second guide inclined groove;

[0015] When the hydraulic push rod drives the connecting piece to move, the inclined slider moves along with the push block.

[0016] Preferably, the driving assembly includes a ring gear, a driving wheel and three driven wheels;

[0017] The driven wheel is coaxially arranged with the cam, the driven wheel is meshed with the inner ring of the gear ring, the driving wheel is meshed with the outer ring of the gear ring, and the central axis of the driving wheel extends out of the chuck body and is connected to an adjusting knob.

[0018] Preferably, a plurality of the chuck assemblies are arranged in a matrix on the chuck base.

[0019] Compared with the existing technology, the beneficial effects of the present invention are: the present invention integrates multiple hydraulic chucks, which can clamp multiple products at a time compared with a single hydraulic chuck structure, and the hydraulic automatic clamping effectively improves the processing efficiency, reduces the time of changing tools and frequent disassembly and assembly, and also reduces the labor intensity of workers. This combined hydraulic clamp is not only suitable for drive shaft drilling, but also for the processing of different types of discs and shaft products, and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a top view of the utility model;

[0021] Figure 2 This is the main view of the utility model;

[0022] Figure 3 This is a schematic structural diagram of the chuck body of the present utility model;

[0023] Figure 4 It is a cross-sectional view of the chuck body of the present utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the chuck body of the present utility model.

[0025] Description of reference numerals:

[0026] 1-Chuck base, 2-Chuck body, 3-Claw, 4-Hydraulic ejector, 5-Guide bevel groove 1, 6-Connecting block, 7-Ejector block, 8-Card groove, 9-Slide groove, 10-Reset spring, 11-Inclined slider, 12-Guide bevel groove 2, 13-Cam, 14-Slider, 15-Gear ring, 16-Drive wheel, 17-Driven wheel, 18-Adjustment knob. DETAILED DESCRIPTION

[0027] A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0028] like Figures 1 to 5 As shown, an embodiment of the present invention provides a combined hydraulic chuck cluster, comprising a chuck base 1 and a plurality of chuck assemblies fixedly mounted on the chuck base 1. Specifically, the plurality of chuck assemblies are fixed to the chuck base 1 by bolts;

[0029] The chuck assembly includes a chuck body 2, three jaws 3, and a connecting piece arranged in the chuck body 2;

[0030] The chuck base 1 is provided with a plurality of hydraulic push rods 4 corresponding to the plurality of chuck assemblies. The hydraulic push rods 4 are of existing structure and will not be described in detail here. When working, the hydraulic push rods 4 abut against the connecting piece, so that the connecting piece abuts against the three claws 3, and the three claws 3 move toward the center of the chuck body 2 to complete the clamping of the workpiece.

[0031] In this embodiment, a plurality of chuck assemblies are arranged in a matrix on the chuck base 1. Specifically, six chuck assemblies are provided on the chuck base 1 of this embodiment;

[0032] The connecting member of this embodiment includes a connecting block 6 and three ejector blocks 7 plugged into the connecting block 6. The hydraulic ejector rod 4 can abut against the connecting block 6 and drive the connecting block 6 to move axially along the chuck body 2.

[0033] The chuck body 2 is provided with three slots 8 for accommodating the three jaws 3 respectively. The jaws 3 are provided with a guide bevel 5. The guide bevel 5 has a guide slope, which is located on the moving path of the ejector block 7. Under the action of the hydraulic ejector rod 4, the three ejector blocks 7 respectively contact the three guide slopes, driving the three jaws 3 to retract inward, thereby completing the fixation of the workpiece.

[0034] In addition, a chute 9 is provided at the bottom of the slot 8, into which a portion of the claw 3 extends. A return spring 10 connected to the claw 3 is also installed in the chute 9. When the workpiece processing is completed, the hydraulic push rod 4 is reset, the ejector block 7 descends, and the three claws 3 open under the action of the return spring 10, releasing the workpiece.

[0035] In order to reduce costs, in this embodiment, all hydraulic push rods 4 are integrated into a set of hydraulic systems. If at least two sizes of workpieces need to be clamped at the same time during a workpiece clamping, it is also necessary to consider the different strokes of different hydraulic push rods 4 and set different control logics, which is more troublesome. Therefore, this embodiment is also designed with an adjustment mechanism for adjusting the length of the push block 7 extending outside the connecting block 6. By adjusting the length of the push block 7 extending outside the connecting block 6, the overall height of the connecting piece can be adjusted, so that the hydraulic push rods 4 of the hydraulic chuck corresponding to workpieces of different sizes can move with the same stroke. Specifically, the adjustment mechanism includes an adjustment component and three inclined slide blocks 11, wherein the three inclined slide blocks 11 correspond to the three push blocks 7 one by one; the adjustment component is used to drive the three inclined slide blocks 11 assemblies toward the corresponding push block 7; a guide inclined groove 2 12 is provided on the push block 7, and under the action of the adjustment component, the inclined slide block 11 can be inserted into the guide inclined groove 2 12, and the push block 7 moves axially along the chuck body 2;

[0036] The adjustment assembly includes three cams 13 corresponding to the three inclined sliders 11, and a drive assembly for driving the three cams 13 to rotate. The inclined sliders 11 are inserted into a slider 14, and the slider 14 is slidably disposed in the chuck body. During the rotation process, the cams 13 will abut against the slider 14, causing the slider 14 to slide and the inclined slider 11 to be inserted into the second guide inclined slot 12.

[0037] When the hydraulic jack 4 drives the connecting piece to move, the inclined sliding block 11 moves along with the jack block 7 .

[0038] The driving assembly of this embodiment includes a ring gear 15, a driving wheel 16 and three driven wheels 17. The driving wheel 16 and the driven wheels 17 are all rotatably disposed in the internal cavity of the chuck body;

[0039] The gear ring 15 is rotatably disposed in the chuck body, and specifically the chuck body has a cavity capable of accommodating the adjustment mechanism;

[0040] The driven wheel 17 is coaxially arranged with the cam 13. The driven wheel 17 is meshed with the inner ring of the ring gear 15, and the driving wheel 16 is meshed with the outer ring of the ring gear 15. The central axis of the driving wheel 16 extends out of the chuck body and is connected to the adjusting knob 18. By rotating the adjusting knob 18, the driving wheel 16 is rotated. Under the transmission of the ring gear 15, the three driven wheels 17 rotate simultaneously, and the cam 13 abuts against the slider 14, so that the inclined slider 11 is inserted into the second guide inclined groove 12, the ejector block 7 is raised, and the overall height of the connecting piece is increased. When the hydraulic ejector rod 4 moves the same stroke, the gap between the three jaws 3 of the hydraulic chuck is minimized, so that smaller workpieces can be clamped.

[0041] Previously, loading, unloading, and adjusting a product took 7 minutes, and machining took 13 minutes, resulting in a combined 20 minutes to complete. Now, with a hydraulic chuck cluster, six products can be clamped at once, with automatic hydraulic clamping and no calibration required. On average, each product is completed in 10 minutes, increasing machining efficiency by 50%. The hydraulic chuck assembly offers stable performance and is suitable for high-speed machining, significantly improving production efficiency while reducing worker workload. This combined hydraulic fixture is suitable not only for drilling drive shafts but also for clamping various disc and shaft models ranging from 20-250mm, encompassing a wide range of applications.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit and essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0043] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A combined hydraulic chuck cluster, characterized in that: It includes a chuck base and a plurality of chuck assemblies fixedly mounted on the chuck base; The chuck assembly includes a chuck body, three jaws, and a connecting piece arranged in the chuck body; The chuck base is provided with a plurality of hydraulic push rods corresponding to the plurality of chuck assemblies one by one, the hydraulic push rods abutting against the connecting piece, causing the connecting piece to abut against the three claws, and causing the three claws to move toward the center of the chuck body; The connecting member includes a connecting block and three ejector blocks plugged into the connecting block, and the hydraulic ejector rod can abut against the connecting block and drive the connecting block to move axially along the chuck body; The chuck body is provided with three slots for accommodating three clamping jaws respectively. The clamping jaws are provided with a first guiding inclined groove. The first guiding inclined groove has a guiding inclined surface. The guiding inclined surface is located on the moving path of the ejector block. Under the action of the hydraulic ejector rod, the three ejector blocks respectively contact the three guiding inclined surfaces, driving the three clamping jaws to retract inward to complete the fixation of the workpiece. It also includes an adjustment mechanism for adjusting the length of the top block extending outside the connecting block, the adjustment mechanism including: Three inclined sliders, corresponding to the three top blocks one by one; as well as An adjusting assembly, used for driving the three inclined slider assemblies to move toward corresponding top blocks; A second guiding inclined groove is provided on the top block. Under the action of the adjusting assembly, the inclined sliding block can be inserted into the second guiding inclined groove, and the top block is moved axially along the chuck body.

2. A combined hydraulic chuck cluster according to claim 1, characterized in that: A sliding groove is provided at the bottom of the clamping slot, a part of the clamping claw extends into the sliding groove, and a return spring connected to the clamping claw is also installed in the sliding groove.

3. The combined hydraulic chuck cluster according to claim 1, characterized in that: The adjustment assembly includes three cams corresponding to the three inclined sliders and a driving assembly for driving the three cams to rotate. The inclined sliders are inserted into a slider, and the slider is slidably arranged in the chuck body. During the rotation process, the cams will abut against the slider, causing the slider to slide and the inclined slider to be inserted into the second guide inclined groove. When the hydraulic push rod drives the connecting piece to move, the inclined slider moves along with the push block.

4. A combined hydraulic chuck cluster according to claim 3, characterized in that: The driving assembly includes a ring gear, a driving wheel and three driven wheels; The driven wheel is coaxially arranged with the cam, the driven wheel is meshed with the inner ring of the gear ring, the driving wheel is meshed with the outer ring of the gear ring, and the central axis of the driving wheel extends out of the chuck body and is connected to an adjusting knob.

5. The combined hydraulic chuck cluster according to claim 1, characterized in that: A plurality of the chuck assemblies are arranged in a matrix on the chuck base.

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