Robot casting tool clamp

Abstract

The utility model belongs to the technical field of work fixtures, and particularly relates to a robot casting work fixture. According to the robot casting tool clamp, a composite positioning structure of the circular positioning hole and the conical positioning hole is adopted, and the V-shaped positioning blocks, the first positioning block, the second positioning block and the first positioning block capable of being adjusted and locked are symmetrically distributed, so that multi-directional accurate positioning and uniform stress clamping of a robot casting are achieved; the problems of local stress concentration and workpiece deformation caused by a traditional screw locking mode are effectively solved, the problem of differential deformation caused by different workpieces or multiple times of clamping is reduced, the stability and repeated positioning precision of a machining reference are remarkably improved, and therefore the form and location tolerance controllability and machining consistency of the workpieces under the high-precision machining requirement are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of tool fixture, and particularly relates to a robot casting tool fixture. BACKGROUND

[0002] In the field of machining, robot castings usually need to be fixed on a workbench through screws for machining. However, this fixing mode has significant technical defects in actual operation: when the screws are tightened, the clamping force applied is easy to cause local or overall deformation of the casting. Since the casting itself has limited rigidity, under the action of the locking force, the machining reference surface will produce micro-deformation, and this initial deformation will be continuously amplified in the subsequent machining process. Especially in high-precision machining occasions, even if the initial reference deviation is micron-level, after the accumulation of multiple processes, the shape and position tolerances of the final workpiece are often seriously out of tolerance. More seriously, the deformation caused by clamping stress has uncertainty, and different clamping times of different workpieces or the same workpiece can produce differential deformation modes, making it difficult to control the machining consistency. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at overcoming the problem that the existing mode of fixing robot castings on a machine tool workbench by screws is easy to cause differential deformation of the robot castings, and provides a robot casting tool fixture special for robot castings.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0005] A robot casting tool fixture, comprising a base, a vertical positioning seat and a clamping assembly; the base is provided with a plurality of fastening holes on the outer periphery, and the fastening holes are used to assemble the base on a machine tool workbench through fasteners; the vertical positioning seat is vertically connected to the base, and the lateral surface of the vertical positioning seat is provided with a mounting station, and a circular positioning hole and a conical positioning hole are arranged adjacent to each other in the mounting station; the clamping assembly comprises a first positioning block, a second positioning block, a V-shaped positioning block and an adjusting positioning device; the first positioning block is symmetrically provided with two first positioning blocks on the left side of the mounting station, and the inner side of the first positioning block is provided with a first circular arc positioning surface, and the first positioning block is fixedly arranged through a first screw; the second positioning block is provided with two second positioning blocks on the lower side of the mounting station, and the inner side of the second positioning block is provided with a second circular arc positioning surface, and the second positioning block is fixedly arranged through a second screw; the V-shaped positioning block is provided on the right side of the mounting station, and the inner side of the V-shaped positioning block is provided with a V-shaped positioning surface, and the V-shaped positioning block is fixedly arranged through a third screw; the adjusting positioning device is provided with two adjusting positioning devices on the upper side of the mounting station, and the inner side of the adjusting positioning device is provided with a third circular arc positioning surface, and the adjusting positioning device is fixedly arranged through a fourth screw, and the adjusting positioning device is used to adjust the locking and fixing of the robot casting when being operated.

[0006] The utility model discloses a robot casting tool fixture, through adopting the composite positioning structure of circular positioning hole and conical positioning hole, combining the symmetrical distribution's V type positioning block and first positioning block, second positioning block and adjustable locking's first positioning block, realized the multidirectional accurate positioning of robot casting and even stress clamping, effectively avoided the local stress concentration and workpiece deformation problem caused by traditional screw locking mode, reduced the differentiation deformation problem caused by different workpieces or multiple clamping, significantly improved the stability of processing datum and repeat positioning accuracy, thereby ensured the form tolerance controllability and machining consistency of workpiece under the high-precision machining requirement.

[0007] Further, the lateral connecting seat is provided with a lateral assembly hole, and the assembly hole is used for assembling the base on the machine tool workbench through fasteners; by such arrangement, the overall rigidity of the clamp is further enhanced through the lateral reinforcing structure, the connection between the base and the machine tool workbench is more stable and reliable, and vibration and displacement that may be generated in the machining process are effectively inhibited; meanwhile, the lateral assembly hole provides multi-angle installation options, so that the clamp can adapt to the installation interface requirements of different machine tool workbenches, and the universality and clamping stability of the clamp are improved, thereby further ensuring the high-precision machining quality of the robot casting.

[0008] Further, the adjusting and positioning device sequentially includes a fixed seat, an adjusting seat and a locking seat, the third circular arc positioning surface is arranged on the locking seat, the fixed seat and the adjusting seat are connected through a vertical dovetail guide structure, the adjusting seat and the locking seat are connected through an oblique dovetail guide structure, the fixed seat is arranged and fixed on the upper side of the mounting station through a fourth screw, the adjusting seat is provided with a threaded adjusting piece penetrating the inner side, the upper side of the mounting station is provided with a threaded adjusting hole matched with the threaded adjusting piece, the locking seat is adjusted and locked relative movement through screwing the threaded adjusting piece, so that the robot casting is locked and fixed or loosened and disassembled; by such arrangement, a high-precision progressive clamping control is adopted: the oblique dovetail structure realizes smooth oblique locking movement, and the threaded adjusting piece provides accurate fine adjustment function, so that the clamping force can be accurately controlled and uniformly distributed, the clamping rigidity is ensured and the casting deformation caused by over-clamping is avoided, and the oblique locking design significantly improves the mounting and dismounting efficiency, and the overall structure has high precision, high stability and operation convenience.

[0009] Further, the robot casting includes first and second adapter seats at two ends, and the first and second adapter seats are connected through a connecting arm, the first and second adapter seats are circular in shape, the first adapter seat is provided with a circular-shaped sink, the top surface of the sink is provided with a first adapter groove, the bottom surface of the second adapter seat is provided with a second adapter groove, and the bottom surface of the first adapter seat is formed with a conical positioning portion in a conical shape.

[0010] Further, the first adapter seat is positioned and matched with the conical positioning hole through the conical positioning part, the second adapter seat is positioned and matched in the circular positioning hole, the first circular arc positioning surface is adapted to the outer surface of the second adapter seat, and the second circular arc positioning surface and the third circular arc positioning surface are adapted to the outer surface of the connecting arm; through such setting, the first adapter seat is accurately axially positioned through the taper surface matching of the conical positioning part and the conical positioning hole, and the second adapter seat is radially limited through the circular positioning hole, and the first circular arc positioning surface, the second circular arc positioning surface and the third circular arc positioning surface are respectively adapted to the outer surface of the adapter seat and the side surface of the connecting arm, so that a full-range positioning system for the "two ends and one arm" of the robot casting is formed: the taper surface matching ensures the axial positioning accuracy, the arc surface matching provides radial support, and the sink and the adapter groove structure realize the unification of the process datum, the composite positioning mode effectively disperses the clamping stress, ensures the positioning accuracy, significantly reduces the casting deformation risk, and is particularly suitable for the high-precision machining requirement of the robot casting with a complex adapter structure.

[0011] Further, the tool fixture is used for clamping and fixing the robot casting so that the machine tool processes the connecting holes in the top surfaces of the sink, the connecting arm, the second adapter groove and the second adapter seat.

[0012] Further, the installation station and the clamping assembly are vertically provided with two groups, and the two groups of installation stations and clamping assemblies are symmetrically arranged along the horizontal direction; through such setting, the machining efficiency of the robot casting is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 A schematic view of a robot casting tool fixture clamping a robot casting.

[0014] Figure 2 A front view of a robot casting tool fixture.

[0015] Figure 3 A structural exploded view of a robot casting tool fixture.

[0016] Figure 4 A schematic view of a robot casting tool fixture.

[0017] Figure 5 A schematic view of an adjusting and positioning device.

[0018] Figure 6 A top surface schematic view of a robot casting before machining.

[0019] Figure 7 A bottom surface schematic view of a robot casting before machining.

[0020] Figure 8 The top surface diagram after the robot casting is machined with connecting holes.

[0021] Figure 9 The bottom surface diagram after the robot casting is machined with connecting holes.

[0022] Label explanation: clamp 1, base 2, vertical positioning seat 3, fastening hole 21, installation station 14, circular positioning hole 41, conical positioning hole 42, first positioning block 5, second positioning block 6, V-shaped positioning block 7, adjusting positioning device 8, first circular arc positioning surface 51, first screw 52, second circular arc positioning surface 61, second screw 62, V-shaped positioning surface 71, third screw 72, third circular arc positioning surface 81, lateral connecting seat 23, lateral assembly hole 24, fixed seat 82, adjusting seat 83, locking seat 84, vertical dovetail guide structure 85, oblique dovetail guide structure 86, threaded adjusting piece 87, fourth screw 88, threaded adjusting hole 89, robot casting 9, first adapter seat 91, second adapter seat 92, connecting arm 93, sink 911, first adapter groove 912, second adapter groove 921, conical positioning part 913, connecting hole 99. DETAILED DESCRIPTION

[0023] The specific embodiments of the present application will be described below with reference to the accompanying drawings. In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0024] Reference Figures 1 to 9The utility model discloses a kind of robot casting tool fixture 1, including base 2, vertical positioning seat 3 and clamping assembly;Base 2 outer periphery is equipped with several fastening holes 21, fastening hole 21 is used to pass through fastener and is assembled on machine tool workbench with base 2, fastener is for example screw;Vertical positioning seat 3 is vertically connected on base 2, its lateral surface is equipped with installation station 14, circular positioning hole 41 and conical positioning hole 42 are arranged adjacent in installation station 14;Clamping assembly includes first positioning block 5, second positioning block 6, V-shaped positioning block 7 and adjusting positioning device 8;Two first positioning blocks 5 are symmetrically arranged on the upper and lower sides of first positioning block 5 and located on the left side of installation station 14, and a first circular arc positioning surface 51 is arranged on the inner side of first positioning block 5, and first positioning block 5 is fixed by a first screw 52;Two second positioning blocks 6 are symmetrically arranged on the upper and lower sides of second positioning block 6 and located on the left side of installation station 14, and a second circular arc positioning surface 61 is arranged on the inner side of second positioning block 6, and second positioning block 6 is fixed by a second screw 62;V-shaped positioning block 7 is located on the right side of installation station 14, and a V-shaped positioning surface 71 is arranged on the inner side of V-shaped positioning block 7, and the V-shaped positioning block 7 is fixed by a third screw 72;Two adjusting positioning devices 8 are symmetrically arranged on the upper and lower sides of adjusting positioning device 8 and located on the right side of installation station 14, and a third circular arc positioning surface 81 is arranged on the inner side of adjusting positioning device 8, and adjusting positioning device 8 is fixed by a fourth screw 88, and adjusting positioning device 8 is used for adjusting the locking and fixing of robot casting 9 when being operated.

[0025] The robot casting tool fixture 1 of the utility model, through adopting the composite positioning structure of circular positioning hole 41 and conical positioning hole 42, combining the symmetrically distributed V-shaped positioning block 7 and first positioning block 5, second positioning block 6 and the first positioning block 5 that can be adjusted and locked, realizes the multidirectional accurate positioning and uniform stress clamping of robot casting 9, effectively avoids the local stress concentration and workpiece deformation problem caused by the traditional screw locking mode, reduces the differential deformation problem caused by different workpieces or multiple clamping, significantly improves the stability of the machining reference and the repeat positioning accuracy, so as to ensure the form tolerance controllability and machining consistency of workpiece under the high-precision machining requirement.

[0026] Referring to Figures 2 to 5 In an embodiment, the base 2 is provided with a lateral connecting seat 23 on the outer side, and the lateral connecting seat 23 is provided with a lateral assembly hole 24. The assembly hole is used for assembling the base 2 on the machine tool workbench through the fastener. Through such a design, the overall rigidity of the clamp 1 is further enhanced through the lateral reinforcing structure, the connection between the base 2 and the machine tool workbench is more stable and reliable, and the vibration and displacement that may be generated during the machining process are effectively inhibited. At the same time, the lateral assembly hole 24 provides multiple-angle installation options, so that the clamp 1 can adapt to the installation interface requirements of different machine tool workbenches, improving the versatility and clamping stability of the clamp 1, and further ensuring the high-precision machining quality of the robot casting 9.

[0027] Referring to Figures 1 to 5 In an embodiment, the adjusting positioning device 8 sequentially comprises a fixing seat 82, an adjusting seat 83 and a locking seat 84, the third circular arc positioning surface 81 is arranged on the locking seat 84, the fixing seat 82 and the adjusting seat 83 are connected through a vertical dovetail guide structure 85, the adjusting seat 83 and the locking seat 84 are connected through an oblique dovetail guide structure 86, the fixing seat 82 is fixed on the upper side of the mounting station 14 through a fourth screw 88, the adjusting seat 83 is provided with a threaded adjusting piece 87 penetrating the inner side, the upper side of the mounting station 14 is provided with a threaded adjusting hole 89 matched with the threaded adjusting piece 87, the relative movement of the locking seat 84 can be adjusted by screwing the threaded adjusting piece 87, so as to realize the locking and fixing or loosening and dismounting of the robot casting 9; by such arrangement, high-precision progressive clamping control is adopted: the oblique dovetail structure realizes smooth oblique locking movement, and the threaded adjusting piece 87 provides precise fine adjustment function, so that the clamping force can be accurately controlled and uniformly distributed, which not only ensures clamping rigidity but also avoids casting deformation caused by over-clamping, and at the same time, the oblique locking design significantly improves the mounting and dismounting efficiency, and the overall structure has high precision, high stability and convenient operation.

[0028] Referring to Figures 6 to 9 In an embodiment, the robot casting 9 comprises a first adapter seat 91 and a second adapter seat 92 at two ends, the first adapter seat 91 and the second adapter seat 92 are connected through a connecting arm 93, the first adapter seat 91 and the second adapter seat 92 are respectively in circular shape, the first adapter seat 91 is provided with a circular-shaped sink 911, the first adapter seat 91 is provided with a first adapter groove 912 on the top surface of the sink 911, the second adapter seat 92 is provided with a second adapter groove 921 on the bottom surface, and the bottom surface of the first adapter seat 91 is formed with a tapered positioning portion 913 in tapered shape.

[0029] Referring to Figures 1 to 9In an embodiment, the first adapter 91 is positioned and matched with the conical positioning hole 42 through the conical positioning part 913, the second adapter 92 is positioned and matched with the circular positioning hole 41, the first circular arc positioning surface 51 is matched with the outer side surface of the second adapter 92, and the second circular arc positioning surface 61 and the third circular arc positioning surface 81 are used for positioning and matching with the outer side surface of the connecting arm 93, and the second circular arc positioning surface 61 and the third circular arc positioning surface 81 are matched with the outer side surface of the connecting arm 93 respectively. By such an arrangement, the first adapter 91 is accurately positioned in the axial direction through the matching of the conical positioning part 913 and the conical surface of the conical positioning hole 42, and the second adapter 92 is radially limited through the circular positioning hole 41, and the first circular arc positioning surface 51, the second circular arc positioning surface 61 and the third circular arc positioning surface 81 are respectively matched with the outer circular surface of the adapter and the side surface of the connecting arm 93, so as to form a full-direction positioning system for the robot casting 9" two-end one-arm". The conical surface matching ensures the axial positioning accuracy, the circular arc surface matching provides radial support, and the sink 911 and the adapter groove structure realize the unification of the process datum. Such a composite positioning mode effectively disperses the clamping stress, ensures the positioning accuracy, significantly reduces the casting deformation risk, and is particularly suitable for the high-precision machining requirement of the robot casting 9 with a complex adapter structure.

[0030] Referring to Figures 1 to 9 In an embodiment, the tool clamp 1 is used for clamping and fixing the robot casting 9 so that the machine tool machines the connecting hole 99 on the top surface of the sink 911, the connecting arm 93, the second adapter groove 921 and the second adapter 92 respectively.

[0031] Referring to Figures 1 to 5 In an embodiment, the mounting station 14 and the clamping assembly are vertically arranged in two groups in the vertical positioning seat 3, and the two groups of the mounting station 14 and the clamping assembly 3 are symmetrically arranged in the horizontal direction. By such an arrangement, the machining efficiency of the robot casting 9 is effectively improved.

[0032] According to the disclosure and teaching of the above description, those skilled in the art of the present application can also make changes and modifications to the above embodiments. Therefore, the present application is not limited to the specific embodiments disclosed and described above, and some modifications and changes of the present application should also fall within the protection scope of the claims of the present application. In addition, although some specific terms are used in the present specification, these terms are only for convenience of description and do not constitute any limitation on the present application.

Claims

1. A robotic foundry tooling fixture, characterized by, The utility model relates to a robot casting fixture, including: The base is provided with a plurality of fastening holes in the outer periphery, and the fastening holes are used for assembling the base on the machine tool workbench through fasteners; The vertical positioning seat is vertically connected to the base, and the lateral surface of the vertical positioning seat is provided with a mounting station, and the mounting station is provided with a circular positioning hole and a conical positioning hole adjacent to each other; The clamping assembly includes a first positioning block, a second positioning block, a V-shaped positioning block, and an adjusting positioning device; The first positioning block is symmetrically provided with two first positioning blocks on the upper and lower sides and is arranged on the left side of the mounting station, and the inner side of the first positioning block is provided with a first circular arc positioning surface; The second positioning block is provided with two second positioning blocks on the opposite side and is arranged on the lower side of the mounting station, and the inner side of the second positioning block is provided with a second circular arc positioning surface; The V-shaped positioning block is arranged on the right side of the mounting station, and the inner side of the V-shaped positioning block is provided with a V-shaped positioning surface, and the V-shaped positioning block is fixed through a third screw; The adjusting positioning device is provided with two adjusting positioning devices on the opposite side and is arranged on the upper side of the mounting station, and the inner side of the adjusting positioning device is provided with a third circular arc positioning surface, and the adjusting positioning device is fixed through a fourth screw, and the adjusting positioning device is used for adjusting the locking and fixing of the robot casting when being operated.

2. The robotic foundry tooling clamp of claim 1, wherein, The outer side of the base is provided with a lateral connecting seat, and the lateral connecting seat is provided with a lateral assembly hole, and the assembly hole is used for assembling the base on the machine tool workbench through fasteners.

3. The robotic foundry tooling clamp of claim 1, wherein, The adjusting positioning device sequentially includes a fixed seat, an adjusting seat, and a locking seat, the third circular arc positioning surface is arranged on the locking seat, the fixed seat and the adjusting seat are connected through a vertical dovetail guide structure, the adjusting seat and the locking seat are connected through an inclined dovetail guide structure, the fixed seat is fixed on the upper side of the mounting station through a fourth screw, the adjusting seat is provided with a threaded adjusting member penetrating the inner side, the upper side of the mounting station is provided with a threaded adjusting hole matched with the threaded adjusting member, and the locking seat is adjusted to move relatively by rotating the threaded adjusting member, so that the locking and fixing or loosening and dismounting of the robot casting are realized.

4. The robotic foundry tooling clamp of claim 1, wherein, The robot casting includes first and second adapter seats at two ends, and the first and second adapter seats are connected through a connecting arm, the first and second adapter seats are circular in shape, the first adapter seat is provided with a circular-shaped sink, the top surface of the sink is provided with a first adapter groove, the bottom surface of the second adapter seat is provided with a second adapter groove, and the outer periphery of the bottom surface of the first adapter seat is formed with a conical positioning part in a conical shape.

5. The robotic foundry tooling clamp of claim 4, wherein, The first adapter seat is positioned and matched with the conical positioning hole through the conical positioning part, the second adapter seat is positioned and matched in the circular positioning hole, the first circular arc positioning surface is matched with the outer side surface of the second adapter seat, the second circular arc positioning surface and the third circular arc positioning surface are used for positioning and matching with the outer side surface of the connecting arm, and the second circular arc positioning surface and the third circular arc positioning surface are respectively matched with the outer side surface of the connecting arm.

6. The robotic foundry tooling clamp of claim 5, wherein, The tool clamp is used for clamping and fixing the robot casting to enable the machine tool to process connecting holes in the top surfaces of the sink, the connecting arm, the second adapter groove, and the second adapter seat.

7. The robotic foundry tooling clamp of any one of claims 1 to 6, wherein, The mounting station and clamping assembly are vertically provided with two groups, and the two groups of mounting station and clamping assembly are symmetrically arranged along the horizontal direction.

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