Thin-wall conical structure turning tool capable of achieving rapid clamping
By designing a quick-clamping fixture that combines a conical block, a conical wedge, and a spring with a three-jaw chuck, the deformation problem of thin-walled conical structures during machining was solved, achieving high-precision machining with high surface roughness.
Patent Information
- Application Number
- CN202423245493.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Traditional clamping methods cannot prevent the deformation of thin-walled conical structures during machining, affecting machining accuracy and surface roughness.
A quick-clamping machining fixture for thin-walled conical structures was designed. It uses a conical block, a conical wedge, and a spring in conjunction with a three-jaw chuck. The tensioning mechanism tightly fits the inner conical surface of the workpiece, increasing rigidity and preventing deformation.
It effectively reduces or avoids deformation of thin-walled conical structures during machining, improves machining accuracy and surface roughness, and is convenient and practical to use.
Smart Images
Figure CN223670707U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model mainly relates to thin wall conical structure part machining technical field, concretely relates to a kind of quick clamping and anti-deformation design's machining frock. BACKGROUND
[0002] Lathe is mainly used to the rotating workpiece of turning tool and can be used on lathe Drill, reamer, tap, die and knurling tool to carry out corresponding processing, and the workpiece is installed by claw clamp on lathe, and the outer cylindrical surface or inner cylindrical surface of part is clamped and fixed, and air cylinder or manual locking is used.
[0003] Part of lathe workpiece outer circle has good rigidity, but when internal thin wall conical structure exists, the claw clamp mode of traditional clamping outer surface or inner surface cannot avoid the deformation of internal thin wall conical structure in the processing process, it is difficult to guarantee the high dimensional accuracy and surface roughness of thin wall conical structure, clamping is very inconvenient, and processing is more difficult.Therefore, it is necessary to propose a kind of processing frock to solve the above technical problems.
[0004] It should be noted that the above content belongs to the technical cognition of the inventor, and due to the vast and complex technical content in the field, the above content of the present application does not necessarily constitute the prior art. UTILITY MODEL CONTENT
[0005] 1. Technical problem to be solved by the utility model:
[0006] The utility model provides a thin wall conical structure lathe processing frock of quick clamping to solve the technical problems existing in the above background technology.
[0007] 2. Technical scheme:
[0008] To achieve the above purpose, the utility model provides a technical scheme: a thin wall conical structure lathe processing frock of quick clamping, comprising a bottom plate, the bottom plate rear end is installed on a three-jaw chuck, a conical wedge capable of pressing expansion is slidably installed at the middle of the bottom plate front end, and a spring is installed between the conical wedge and the bottom plate;The three claws of the three-jaw chuck correspond to the four corners of the bottom plate front end, the inner side of the claw front end is provided with a clamping groove, and a conical block capable of radial sliding is installed in the clamping groove;When the spring is in free state, the outer side of the conical wedge protrudes from the outer side of the conical block, when the thin wall conical workpiece is installed, the boss at the edge of the thin wall conical workpiece rear end is clamped and engaged with the clamping groove of the three claws, and the inner end surface of the thin wall conical workpiece is pressed against the conical wedge, so that the conical block is tightened outward, and the outer side of the conical block can be tightly combined with the inner conical surface of the thin wall conical workpiece, and the thin wall conical workpiece can be locked by the three-jaw chuck.
[0009] Further, the outer side of the conical block can be attached to the inner conical surface of the thin-walled conical workpiece, and the inner side of the conical block can be attached to the four sides of the conical wedge.
[0010] Further, the middle part of the front end of the bottom plate is provided with a second bolt, the conical wedge is slidably sleeved on the second bolt, the spring is sleeved on the outer side of the second bolt, one end of the spring is connected to the bottom plate, and the other end of the spring is connected to the conical wedge.
[0011] Further, the conical block is installed on the claw through a first bolt, a rectangular groove is formed in the rear end of the claw, a rectangular hole is formed in the groove bottom of the rectangular groove, the rod part of the first bolt can slide radially in the rectangular hole, and the head part of the first bolt can slide radially in the rectangular groove.
[0012] Further, the bottom plate has a Y-shaped structure, and three edges thereof are uniformly distributed at intervals of 120 degrees; and the three claws of the three-jaw chuck are respectively located at the middle positions of the adjacent two edges of the bottom plate.
[0013] 3. Beneficial effects:
[0014] Compared with the prior art, the technical scheme has the beneficial effects that:
[0015] The utility model discloses a reasonable design, through setting up conical block, conical wedge, spring and so on component and three -jaw chuck cooperation work, on the basis of the original claw clamping mode increases a kind of expansion mechanism, tightly fits workpiece inner conical surface and end surface, to be able to increase the conformal support structure in the inside of thin-walled conical structure when clamping workpiece, increase thin-walled conical structure rigidity, reduce or avoid the deformation of workpiece in the process of turning, better satisfy the requirement of workpiece high accuracy and surface roughness, its overall design is ingenious, convenient to use, and practical.
[0016] It should be noted that the structures not introduced in the utility model are the same as the prior art or can be realized by using the prior art, and do not involve the design points and improvement direction of the utility model, and therefore will not be described here. DRAWINGS
[0017] Figure 1 It is a front view structural schematic drawing of the processing tool of the utility model;
[0018] Figure 2 It is a front view structural schematic drawing of the processing tool of the utility model; Figure 1 It is a side sectional view schematic drawing of the utility model at A-A;
[0019] Figure 3 It is a side sectional view schematic drawing of the processing tool of the utility model when installing workpiece.
[0020] Reference signs:
[0021] 1, base plate; 2, clamping jaw; 201, clamping groove; 202, rectangular groove; 203, rectangular hole; 3, tapered block; 4, conical wedge; 5, first bolt; 6, second bolt; 7, spring; 8, thin-walled tapered workpiece. DETAILED DESCRIPTION
[0022] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings, in which several embodiments of the present application are given. However, the present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.
[0023] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "page", "bottom", "inner", "outer", "clockwise", "counterclockwise" are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description. Therefore, it cannot be understood as indicating or implying 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 limiting the present application.
[0024] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.
[0025] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing", "provided with", "provided in" and the like should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. EMBODIMENT
[0026] Because thin-walled structures are prone to deformation during high-speed rotary turning due to traditional clamping methods and centrifugal force, this affects the final dimensional accuracy and surface roughness of the workpiece. Therefore, this embodiment provides a new quick-clamping machining fixture for thin-walled conical structures, as shown in the attached figure. Figures 1-3 Specifically, it includes a base plate 1, which has a Y-shaped structure with its three sides evenly distributed at 120° intervals. A pressable and retractable conical wedge 4 is slidably installed at the center of the front end of the base plate 1, and a spring 7 is correspondingly installed between the conical wedge 4 and the base plate 1. The three jaws 2 of the three-jaw chuck are located around the front end of the base plate 1; specifically, in this embodiment, the three jaws 2 of the three-jaw chuck are respectively located at the middle positions of two adjacent sides of the base plate 1. A groove 201 is provided on the inner side of the front end of the jaw 2, and a radially sliding conical block 3 is installed in the groove 201. The outer side of the conical block 3 can fit against the inner conical surface of the thin-walled conical workpiece 8, and the inner side of the conical block 3 can fit against the periphery of the conical wedge 4. When the spring 7 is in a free state, the outer side of the conical wedge 4 protrudes beyond the outer side of the conical block 3 by a certain length. When installing the thin-walled conical workpiece 8, the bosses at the four edges of the rear end of the thin-walled conical workpiece 8 engage with the slots 201 of the three jaws 2. The inner end face of the thin-walled conical workpiece 8 presses against the conical wedge 4, causing the three conical blocks 3 to expand outwards simultaneously, so that the outer side of the conical blocks 3 can fit tightly against the inner conical surface of the thin-walled conical workpiece 8. The thin-walled conical workpiece 8 can be locked by the three-jaw chuck.
[0027] Specifically, a second bolt 6 is installed at the center of the front end of the base plate 1, the conical wedge 4 is slidably fitted onto the second bolt 6, the spring 7 is fitted onto the outside of the second bolt 6, one end of the spring 7 is connected to the base plate 1, and the other end of the spring 7 is connected to the conical wedge 4, thereby realizing the elastic extension and retraction of the conical wedge 4.
[0028] The conical block 3 is mounted on the jaw 2 by a first bolt 5. A rectangular groove 202 is formed at the rear end of the jaw 2, and a rectangular hole 203 is formed at the bottom of the groove 202. The shank of the first bolt 5 can slide radially within the rectangular hole 203, and the head of the first bolt 5 can also slide radially within the rectangular groove 202, thus enabling the conical block 3 to slide radially. The width of the rectangular groove 202 matches the diameter of the head of the first bolt 5, and the width of the rectangular hole 203 matches the diameter of the shank of the first bolt 5. The depth of the rectangular groove 202 is slightly greater than the thickness of the head of the first bolt 5.
[0029] In the embodiment, the conical wedge 4 and the spring 7 are installed on the bottom plate 1 by the second bolt 6, and the spring 7 is in a free (or slightly compressed) state; the tapered block 3 is connected with the claw 2 by the first bolt 5, so as to ensure smooth sliding of the tapered block 3 in the clamping groove 201 of the claw 2. In work, the machining tool is installed on the three-jaw chuck of the numerical control lathe, the rear end of the bottom plate 1 is installed on the chuck, three claws 2 are installed, the installation and connection are realized by bolts, the thin-walled tapered workpiece 8 is placed on the end face of the three-jaw chuck, the inner end face of the thin-walled tapered workpiece 8 is pressed against the end face of the conical wedge 4 in the tool, the conical wedge 4 is pressed inward and the bottom spring 7 is compressed, so that the three tapered blocks 3 around the conical wedge 4 are synchronously expanded outward, and the three tapered blocks 3 are tightly attached to the inner conical surface of the thin-walled tapered workpiece 8; the workpiece is locked by the three-jaw chuck, and the machining program is started; after the machining is completed, the three claws 2 of the three-jaw chuck are loosened, the conical wedge 4 is ejected under the action of the spring 7, the thin-walled tapered workpiece 8 is loosened, and the workpiece can be taken out. It should be pointed out that the parts machined by the machining tool are generally thin-walled tapered parts, and in the embodiment, the thin-walled tapered parts such as rear protective covers can be machined.
[0030] The above-described embodiments only express certain embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application; it should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application; therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A quick clamping thin-walled conical structure turning tooling, characterized in that: The utility model provides a kind of thin-walled conical workpiece locking device, including bottom plate (1), the bottom plate (1) rear end corresponds to be installed on three-jaw chuck, the bottom plate (1) front end middle part sliding installation can press out the conical wedge (4) of expansion and contraction, spring (7) is correspondingly installed between the conical wedge (4) and bottom plate (1);Three clamping claws (2) of the three-jaw chuck correspond to be located at the four around of bottom plate (1) front end, the inner side of the clamping claw (2) front end is equipped with the clamping groove (201) correspondingly, the conical block (3) that can slide radially is correspondingly installed in the clamping groove (201);When spring (7) is in free state, the outer side of the conical wedge (4) protrudes the outer side of conical block (3), when installing thin-walled conical workpiece (8), the boss at the edge of the rear end four around of thin-walled conical workpiece (8) is engaged with the clamping groove (201) of three clamping claws (2) correspondingly, thin-walled conical workpiece (8) inner end surface is pressed tightly conical wedge (4), so that conical block (3) is outwardly tight, so that the outer side of conical block (3) can be tightly attached with the inner conical surface of thin-walled conical workpiece (8), and thin-walled conical workpiece (8) can be locked by three-jaw chuck.
2. A quick clamping thin walled conical structure machining tooling fixture as claimed in claim 1 wherein: The outer side of the conical block (3) can be attached with the inner conical surface of the thin-walled conical workpiece (8), and the inner side of the conical block (3) can be attached with the four around of the conical wedge (4).
3. A quick clamping thin walled conical structure machining tooling fixture as claimed in claim 1 wherein: The second bolt (6) is correspondingly installed in the middle part of the front end of the bottom plate (1), the conical wedge (4) is correspondingly sleeved on the second bolt (6), the spring (7) is correspondingly sleeved on the outer side of the second bolt (6), one end of the spring (7) is correspondingly connected to the bottom plate (1), and the other end of the spring (7) is correspondingly connected to the conical wedge (4).
4. A quick clamping thin walled conical structure machining tooling fixture as claimed in claim 1 wherein: The conical block (3) is correspondingly installed on the clamping claw (2) by the first bolt (5), the rear end of the clamping claw (2) is correspondingly provided with a rectangular groove (202), the groove bottom of the rectangular groove (202) is correspondingly provided with a rectangular hole (203), the rod part of the first bolt (5) can be correspondingly radially slid in the rectangular hole (203), and the head part of the first bolt (5) can be correspondingly radially slid in the rectangular groove (202).
5. A quick clamping thin walled conical structure machining tooling fixture as claimed in claim 1 wherein: The bottom plate (1) is Y-shaped structure, and the three edges are uniformly distributed at intervals of 120 degrees; the three clamping claws (2) of the three-jaw chuck are correspondingly located at the middle positions of the adjacent two edges of the bottom plate (1).