A quick clamping tool for machining center
Patent Information
- Application Number
- CN202522512877.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-26
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-11-26
AI Technical Summary
Thin-walled ring-shaped parts are difficult to clamp and position directly in machining centers, which affects production efficiency and accuracy.
A tooling for quick clamping of a machining center was designed, including a tooling body, a large pressure ring, an open spacer, and a hexagonal screw. The large pressure ring is inserted into the center hole of the part and clamped with the hexagonal screw. The machining center spindle is used for positioning and clamping to achieve precise positioning and clamping of the part.
It enables precise positioning and clamping of thin-walled ring-shaped parts in machining centers, avoiding deformation, improving machining efficiency and accuracy, and allowing multiple parts to be clamped at once for multi-station machining.
Smart Images
Figure CN224927484U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mechanical processing technology, and relates to a tooling for positioning and clamping thin-walled ring parts in a machining center to ensure positional accuracy. Background Technology
[0002] Thin-walled ring-shaped parts are difficult to clamp in subsequent processes during production. Due to their shape, structure, and production conditions, they require machining centers for processing. However, these parts often cannot be directly clamped and positioned during machining due to the lack of suitable tooling fixtures, impacting production progress. For example, a thin-walled ring-shaped part (such as...) Figure 2 In the machining of the part (as shown), because the outer circle of the part is an annular part with an M100×2 thread, the diameter of the middle hole of the part is φ78.5, and the thickness of the part is only 5mm, it belongs to a thin-walled part. After the inner and outer circles of the part are machined in the first operation (as shown), Figure 1 As shown, the shapes of the holes and grooves on the part need to be completed in subsequent processes, but the outer thread of the part cannot be directly clamped when milling the part. We analyzed the structure of the part and found that the previous processing was slow and cumbersome. In order to improve production efficiency and enable the part to be quickly positioned and clamped in the machining center, this utility model tooling is needed to quickly position and clamp the semi-finished part, and complete the hole drilling and groove milling of the ring part in one operation in the machining center.
[0003] Therefore, how to accurately position and clamp thin-walled ring-shaped parts in machining centers is a problem that we need to solve. Utility Model Content
[0004] (a) Purpose of the utility model The purpose of this invention is to provide a tooling for positioning and clamping thin-walled annular parts in a machining center to ensure relative positional accuracy.
[0005] (II) Technical Solution To solve the above-mentioned technical problems, this utility model provides a tooling for quick clamping in a machining center, which includes a tooling body, a large pressure ring, an open spacer, and a hexagonal screw. The tooling body is plate-shaped and has multiple part clamping areas. Each part clamping area has multiple large circular holes as positioning holes, and a threaded through hole is opened in the center of each large circular hole. The large pressure ring is a circular plate with a central through hole. After the large pressure ring passes through the central hole of the annular part, the lower part of the large pressure ring is embedded in the large circular hole of the tooling body. The open spacer is arranged above the through hole of the large pressure ring. The hexagonal screw passes through the open spacer and the through hole of the large pressure ring, and its lower end is screwed into the threaded hole in the center of the large circular hole, thereby positioning and clamping the annular part on the tooling body.
[0006] Furthermore, when the tooling is used for part processing, the tooling body is straightened on the side using a lever gauge in the machining center and then secured with bolts. The lever gauge is then clamped onto the machining center spindle to find the center of one of the large circular holes on the tooling body as the origin for part processing.
[0007] Furthermore, the diameter of the hole at the center of the large pressure ring is larger than the diameter of the screw head of the hexagonal socket screw.
[0008] Furthermore, the outer circle of the large pressure ring is a cylindrical surface with an upper cone and a lower circle.
[0009] Furthermore, while the inner holes of the cylindrical and annular parts under the large pressure ring and the large circular hole of the tooling body are positioned and fitted, the upper conical surface presses the edge of the inner hole of the annular part tightly.
[0010] Furthermore, the height of the cylinder under the large pressure ring is equal to the depth of the large circular hole plus the height of the part.
[0011] Furthermore, one side of the open pad is a through groove.
[0012] Furthermore, hexagonal screws are standard parts.
[0013] Furthermore, the part clamping area is evenly distributed on the tooling body.
[0014] Furthermore, the diameter of the large pressure ring through hole is larger than the diameter of the threaded through hole.
[0015] (III) Beneficial Effects The tooling for quick clamping of machining centers provided by the above technical solution can meet the requirements of uniform machining datum and stable clamping state when machining holes and shapes of ring parts. It effectively solves the problems of easy deformation during clamping of such ring parts, inability to accurately position them in the machining center and difficulty in clamping. It can clamp multiple parts at once and complete multi-station milling at the same time, thereby improving machining efficiency. Attached Figure Description
[0016] Figure 1 Figure I is a schematic diagram of the ring-shaped part processed by the tooling of this utility model; Figure II is a cross-sectional view AA of Figure I.
[0017] Figure 2 Figure I is a schematic diagram of the tooling body of this utility model; Figure II is a BB sectional view of Figure I.
[0018] Figure 3 Figure I is a schematic diagram of the large pressure ring of the tooling of this utility model; Figure II is a top view of Figure I.
[0019] Figure 4 Figure I is a schematic diagram of the opening pad of the tooling of this utility model; Figure II is a bottom view of Figure I.
[0020] Figure 5 Figure I is an overall assembly diagram of the tooling of this utility model after clamping the parts; Figure II is a CC sectional view of Figure I.
[0021] Figure 6 This is a three-dimensional cross-sectional schematic diagram of the tooling of this utility model after clamping the parts. Detailed Implementation
[0022] To make the objectives, contents, and advantages of this utility model clearer, the specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples.
[0023] Figure 1 The image shows the thin-walled annular part to be machined in this embodiment. When milling the thin-walled annular part on a machining center, the part needs to be positioned and clamped to ensure accurate positioning of each semi-finished part. Based on the shape and structure of the thin-walled annular part, the outer diameter is threaded and cannot be directly clamped to avoid damaging the threads. Machining requires using the pre-machined inner hole as the part's positioning point. However, since the part is thin-walled and annular, the inner hole surface area is very small. Directly clamping it with the inner hole makes it difficult to clamp flat and easily causes deformation. Therefore, a new tooling design is needed for positioning and clamping the thin-walled annular part.
[0024] In this embodiment, the tooling for quick clamping of machining centers is used for positioning and clamping thin-walled annular parts in CNC machining centers. When milling thin annular parts on a machining center machine tool, it is necessary to position and clamp the parts to ensure that the machining position relative to the center of the parts is accurate after positioning. The shape and structure of the annular parts to be machined are analyzed, and the shape of the parts is used to position the parts during machining.
[0025] like Figures 2 to 5 As shown, the quick-clamping fixture for the machining center in this embodiment includes a fixture body, a large pressure ring, an open spacer, and hexagonal screws. The fixture body is plate-shaped with multiple part clamping areas. Each part clamping area has multiple large circular holes as positioning holes, and a threaded through hole is opened in the center of each large circular hole. The large pressure ring is a circular plate with a central through hole. After the large pressure ring passes through the central hole of the annular part, its lower part is embedded in the large circular hole of the fixture body. The open spacer is arranged above the through hole of the large pressure ring. The hexagonal screw passes through the open spacer and the through hole of the large pressure ring, and its lower end is screwed into the threaded hole in the center of the large circular hole. The annular part is positioned and clamped on the fixture body, allowing for milling machining of the part in the machining center. This satisfies the clamping requirements for secondary precise positioning of the annular part. By sequentially clamping multiple annular parts into the evenly distributed large circular holes in the fixture body, multiple parts can be machined simultaneously, improving efficiency and ensuring manufacturing accuracy.
[0026] When the tooling is used for part machining, the tooling body is straightened on the side by a lever indicator on the machining center and then the body is fastened with bolts. The lever indicator is clamped on the machining center spindle to find the center of one of the large circular holes on the tooling body as the origin of part machining.
[0027] like Figure 3 As shown, the diameter of the hole at the center of the large pressure ring is larger than the head diameter of the hexagonal screw. During installation or disassembly, after loosening the hexagonal screw, it is not necessary to completely unscrew it from the fixture body; the large pressure ring and the ring-shaped part can be directly assembled and disassembled. The outer circle of the large pressure ring is a cylindrical surface with an upper cone and a lower circle. While the lower cylinder and the inner hole of the ring-shaped part and the large circular hole of the fixture body are positioned and fitted, the upper cone surface presses the edge of the inner hole of the ring-shaped part tightly. The height of the lower cylinder is equal to the depth of the large circular hole plus the height of the part.
[0028] like Figure 4 As shown, one side of the open spacer has a through groove. When installing or removing it with the hex screw, it is not necessary to loosen the hex screw and completely unscrew it from the body. The open spacer can be easily installed and removed.
[0029] like Figure 5 As shown, first screw four hexagonal screws into the threaded holes at the center of each of the round holes on the fixture body. Then, sequentially insert the annular part, the large pressure ring, and the open spacer. Finally, tighten all the hexagonal screws to position and clamp the annular part on the fixture body. The clamping process is simple and quick. More large round holes can be provided on the fixture body as needed to clamp more thin-walled annular parts at once, while simultaneously performing milling operations, greatly improving product quality and production efficiency.
[0030] The internal hexagonal screws used in the tooling of this utility model are standard parts.
[0031] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A tooling for quick clamping in a machining center, characterized in that, The fixture includes a fixture body, a large pressure ring, an open spacer, and hexagonal screws. The fixture body is plate-shaped with multiple part clamping areas. Each part clamping area has multiple large circular holes as positioning holes, and a threaded through hole is opened in the center of each large circular hole. The large pressure ring is a circular plate with a central through hole. After the large pressure ring passes through the central hole of the annular part, the lower part of the large pressure ring is embedded in the large circular hole of the fixture body. The open spacer is placed above the through hole of the large pressure ring. The hexagonal screws pass through the open spacer and the through hole of the large pressure ring, and the lower end is screwed into the threaded hole in the center of the large circular hole, thus positioning and clamping the annular part on the fixture body.
2. The tooling for quick clamping of a machining center as described in claim 1, characterized in that, When the tooling is used for part machining, the tooling body is straightened on the side by a lever indicator on the machining center and then the body is fastened with bolts. The lever indicator is clamped on the machining center spindle to find the center of one of the large circular holes on the tooling body as the origin of part machining.
3. The tooling for quick clamping of a machining center as described in claim 1, characterized in that, The diameter of the hole in the center of the large pressure ring is larger than the diameter of the screw head of the hexagonal screw.
4. The tooling for quick clamping of a machining center as described in claim 3, characterized in that, The outer circle of the large pressure ring is a cylindrical surface with an upper cone and a lower circle.
5. The tooling for quick clamping in a machining center as described in claim 4, characterized in that, While the inner holes of the cylindrical and annular parts under the large pressure ring are positioned and fitted with the large circular hole of the tooling body, the upper conical surface presses the edge of the inner hole of the annular part tightly.
6. The tooling for quick clamping of a machining center as described in claim 5, characterized in that, The height of the cylinder under the large pressure ring is equal to the depth of the large circular hole plus the height of the part.
7. The tooling for quick clamping of a machining center as described in claim 6, characterized in that, One side of the open pad is a through groove.
8. The tooling for quick clamping in a machining center as described in claim 7, characterized in that, Hex socket screws are standard parts.
9. The tooling for quick clamping of a machining center as described in claim 1, characterized in that, The part clamping area is evenly distributed on the tooling body.
10. The tooling for quick clamping of a machining center as described in claim 1, characterized in that, The diameter of the through hole of the large pressure ring is larger than the diameter of the threaded through hole.