Insert type soft claw

Abstract

The utility model discloses an insert type soft claw, and relates to the technical field of clamps. A soft claw structure in the prior art is often insufficient in clamping force, and the clamping precision is difficult to guarantee, so that the clamping device comprises a first soft claw and a second soft claw, and the first soft claw and the second soft claw are both provided with clamping cambered surfaces; the clamping cambered surface of the first soft claw is provided with a first clamping cambered surface and a first reference cambered surface, the first clamping cambered surface and the first reference cambered surface are arranged in a step shape, the cambered surface of the first clamping cambered surface is larger than that of the first reference cambered surface, the first clamping cambered surface is used for clamping, and the first reference cambered surface is a machining and detecting reference; the clamping requirements of three product parts with different shapes are met, the tool cost is saved, the tool is convenient to assemble and disassemble, the use condition is good, and the good popularization value is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fixtures, and particularly relates to an insert-type soft jaw. Background Technique

[0002] A certain product is a rotary cavity type pressure vessel, which is butt-welded by thin-walled parts such as -01 end flange, -02 end flange, -03 transition ring and bellows. Since the entire cavity of the product is pressurized, it is required that all welds have sufficient strength and sealing performance. To ensure uniform weld formation, it is necessary to strictly control the radial misalignment between the parts to be welded. Therefore, it is necessary to perform matching turning on the inner and outer diameters of the parts before welding.

[0003] When turning cylindrical thin-walled parts, especially parts with high requirements for roundness and surface quality, it is not possible to directly use general-purpose jaws for clamping. Usually, soft jaws are required for clamping. Because the clamping surface of general-purpose jaws is small, it is easy to deform or damage the product. Compared with general-purpose jaws, the clamping surface of soft jaws is greatly increased, and its clamping diameter can be machined according to the size of the parts of the product to be processed, which can ensure good fitting with the product parts and effectively prevent deformation.

[0004] In the field of machining, especially in precision machining and automated production lines, there are extremely high requirements for the clamping accuracy and stability of workpieces. The traditional soft jaw structure often has problems such as insufficient clamping force and difficulty in ensuring clamping accuracy, and it is difficult to meet the needs of high-precision machining.

[0005] In view of the above problems, the utility model document proposes an insert-type soft jaw. Content of the Utility Model

[0006] The purpose of the utility model is to provide an insert-type soft jaw, which can be compatible with the clamping requirements of three different shaped product parts, saves tooling costs, is convenient for tooling installation and disassembly, has good use conditions, has good popularization value, and solves the existing technical problems.

[0007] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0008] An insert-type soft jaw, comprising:

[0009] A first soft jaw and a second soft jaw, both of which are provided with clamping arc surfaces;

[0010] Among them, the clamping arc surface of the first soft jaw is provided with a first clamping arc surface and a first reference arc surface, the first clamping arc surface and the first reference arc surface are arranged in a stepped manner, the arc surface of the first clamping arc surface is larger than the arc surface of the first reference arc surface, the first clamping arc surface is used for clamping, and the first reference arc surface is a machining and detection reference;

[0011] An insert block, the clamping arc surface of the second soft jaw is provided with a second clamping arc surface and a second reference arc surface. The clamping arc surface of the second soft jaw is larger than that of the first soft jaw. An avoidance groove communicating with the second clamping arc surface is formed inside the second soft jaw. The insert block is arranged in the avoidance groove, and two mounting screw holes for mounting the insert block are formed inside the second soft jaw.

[0012] Optionally, the insert block is T-shaped.

[0013] Optionally, the insert block includes a side stop block and a lower convex block. The side stop block is arranged inside the lower convex block, and the lower convex block and the side stop block form a clamping arc surface.

[0014] Optionally, the lower convex block matches the avoidance groove.

[0015] Optionally, two mounting holes are formed inside the lower convex block, and the two mounting holes respectively match the two mounting screw holes.

[0016] In this application, during use, when an insert block is installed inside the second soft jaw, it can be used for processing non-interfering parts. When no insert block is installed inside the second soft jaw and the avoidance groove is empty, it can be used for processing parts with lugs and interference. The clamping parts of the first soft jaw, the second soft jaw and the insert block all need to be processed to a diameter adapted to the product flange. To ensure accuracy, each soft jaw and the insert block need to be installed on the chuck for turning and machining the reference arc surface and the clamping arc surface. The first flange is the turned - 01 end flange product, the second flange is the turned - 02 end flange, and the transition ring is the - 03 transition ring. When turning the - 01 end flange product, install the first soft jaw and the second soft jaw on the chuck base jaws, and install the lug near the center of the - 01 end flange into the groove of the second soft jaw. After installation in place, turning and machining can be carried out. When turning the - 02 end flange and the - 03 transition ring, install the insert block into the groove of the second soft jaw, and after installing the - 02 end flange or the - 03 transition ring in place, turning and machining can be carried out.

[0017] In this utility model, by setting stepped clamping arc surfaces and reference arc surfaces on the first soft jaw and the second soft jaw, and adopting a replaceable insert block structure, high-precision clamping of the workpiece is achieved, effectively improving the machining accuracy;

[0018] In this utility model, the design of the insert block enhances the clamping force, and through the tight fit with the avoidance groove, it prevents the workpiece from slipping or shifting during the machining process, improving the stability of the machining process;

[0019] In this technical solution, a set of soft jaws meets the clamping requirements of three different-shaped product parts, saving the tooling cost. The tooling is convenient to install and disassemble, has a good usage condition, and has good promotion value.

[0020] Of course, it is not necessary for any product implementing the present utility model to simultaneously achieve all the above-mentioned advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for describing the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 is a cross-sectional view of the clamping state of the present utility model;

[0023] Figure 2 is a schematic diagram of clamping the first flange of the present utility model;

[0024] Figure 3 is a schematic diagram of clamping the second flange of the present utility model;

[0025] Figure 4 is a schematic diagram of clamping the transition ring of the present utility model;

[0026] Figure 5 is a three-dimensional schematic diagram of the first soft jaw of the present utility model;

[0027] Figure 6 is a front view of the first soft jaw of the present utility model;

[0028] Figure 7 is a cross-sectional view of the first soft jaw of the present utility model;

[0029] Figure 8 is a three-dimensional schematic diagram of the second soft jaw of the present utility model;

[0030] Figure 9 is a front view of the second soft jaw of the present utility model;

[0031] Figure 10 is a cross-sectional view of the second soft jaw of the present utility model;

[0032] Figure 11 is a three-dimensional schematic diagram of the insert block of the present utility model.

[0033] In the figures: 1, first soft jaw; 2, second soft jaw; 3, avoidance groove; 4, mounting screw hole; 5, insert block; 51, side stop block; 52, lower convex block; 53, mounting hole; 6, first clamping arc surface; 7, first reference arc surface; 8, second reference arc surface; 9, second clamping arc surface; 91, first flange; 92, second flange; 93, transition ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0035] In the description of the present utility model, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc. indicating orientations or positional relationships are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation to the present utility model.

[0036] In order to keep the following description of the embodiments of the present utility model clear and concise, the detailed descriptions of known functions and known components are omitted in the present utility model.

[0037] Embodiment 1

[0038] Please refer to Figures 1-11 As shown, in this embodiment, a block-type soft jaw is provided, which includes a first flange 91, a second flange 92, a transition ring 93, a first soft jaw 1, a second soft jaw 2, and a block 5. Among them, the first soft jaw 1 and the second soft jaw 2 form an integral clamping structure.

[0039] The outer shape of the first soft jaw 1 is convenient for installation and positioning. Its clamping arc surface is provided with a first clamping arc surface 6 and a first reference arc surface 7, and the two are arranged in a stepped manner. The arc surface of the first clamping arc surface 6 is designed to be larger than the arc surface of the first reference arc surface 7, which is used to directly contact the workpiece to be clamped to achieve a stable clamping effect. The first reference arc surface 7 serves as a reference surface during the processing and inspection processes to ensure the clamping accuracy.

[0040] The clamping arc surface of the second soft jaw 2 is larger than that of the first soft jaw 1 to adapt to the clamping requirements of workpieces of different sizes. Its clamping arc surface is provided with a second clamping arc surface 9 and a second reference arc surface 8, which are used for further clamping adjustment or as a backup reference. A relief groove 3 is also opened inside the second soft jaw 2, and this groove cooperates with the subsequently installed block 5 to ensure that the block 5 can be stably installed and effectively participate in the clamping work. In addition, the second soft jaw 2 is also provided with mounting screw holes 4 for fixing the block 5 in the relief groove 3 through fasteners such as bolts.

[0041] The insert block 5 is designed in a T-shaped structure, specifically including a side stop block 51 and a lower convex block 52. The side stop block 51 is fixed inside the lower convex block 52, and the two together form a clamping arc surface to enhance the clamping force and prevent the workpiece from slipping off. The shape of the lower convex block 52 matches the avoidance groove 3 to ensure that the insert block can be accurately installed. To fix the insert block 5, two mounting holes 53 are also provided inside the lower convex block 52. Fasteners such as bolts pass through the mounting holes 53 and are screwed into the mounting screw holes 4 to achieve the stable installation of the insert block 5.

[0042] Embodiment 2

[0043] Based on Embodiment 1 for improvement: Refer to the attached Figure 1 - Attachment Figure 11 , the clamping parts of the first soft jaw 1, the second soft jaw 2 and the insert block 5 need to be machined to a diameter suitable for the product flange. To ensure accuracy, each soft jaw and the insert block need to be installed on the chuck for machining the reference arc surface and the clamping arc surface. The first flange 91 is the machined -01 end flange product, the second flange 92 is the machined -02 end flange, and the transition ring 93 is the -03 transition ring. When machining the -01 end flange product, install the first soft jaw 1 and the second soft jaw 2 on the chuck base jaws, and install the lug near the center of the -01 end flange into the 3 of 2. After installation in place, machining can be carried out. When machining the -02 end flange and the -03 transition ring, install the insert block 5 into the 3 of the second soft jaw 2. After installing the -02 end flange or the -03 transition ring in place, machining can be carried out.

[0044] It should be noted that in the description of this specification, descriptions such as "first", "second", etc. are only used to distinguish each feature, and do not have an actual order or directional meaning. This application is not limited thereto.

[0045] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0046] The above-disclosed preferred embodiments of the present utility model are only used to help explain the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to the specific embodiments described. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the art in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A block-type soft claw, characterized in that: include: Two first soft claws (1) and a second soft claw (2), each of the first soft claws (1) and the second soft claw (2) being provided with a clamping arc surface; The clamping arc surfaces of the two first soft claws (1) are provided with a first clamping arc surface (6) and a first reference arc surface (7); the first clamping arc surface (6) and the first reference arc surface (7) are arranged in a stepped shape; the arc surface of the first clamping arc surface (6) is larger than the arc surface of the first reference arc surface (7); the first clamping arc surface (6) is used for clamping, and the first reference arc surface (7) is a processing and detection reference; The insert (5) is provided with a second clamping camber (9) and a second reference camber (8) on the clamping camber of the second soft claw (2), the clamping camber of the second soft claw (2) being larger than the clamping camber of the first soft claw (1), the second soft claw (2) being provided with an avoidance groove (3) connected to the second clamping camber (9), the insert (5) being arranged in the avoidance groove (3), and the second soft claw (2) being provided with two mounting screw holes (4) for mounting the insert (5).

2. The insert-type soft jaw according to claim 1, characterized in that: The insert (5) is T-shaped.

3. The insert-type soft jaw according to claim 2, characterized in that: The insert (5) comprises a side block (51) and a lower protrusion (52); the side block (51) is arranged in the lower protrusion (52); and the lower protrusion (52) and the side block (51) form a clamping arc surface.

4. The insert-type soft jaw according to claim 3, characterized in that: The lower protrusion (52) matches the avoidance groove (3).

5. The insert-type soft jaw according to claim 3, characterized in that: Two mounting holes (53) are provided in the lower protrusion (52), and the two mounting holes (53) match the two mounting screw holes (4) respectively.

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