Fixture structure for eight-face machining of heavy long-shaft rod type workpiece
By designing a heavy long -axis stick -like workpiece structure that includes an octagonal fixture and positioning block, the eight -sided machining fixture structure is solved. Eight -sided processing effect.
Patent Information
- Application Number
- CN202421219415.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The existing multi-faceted machining fixtures have limited load capacity and cannot meet the needs of heavy-duty long-axle rod workpieces. At the same time, ordinary fixtures are difficult to achieve multi-faceted machining and ensure positional relationships between each other.
Design a fixture structure for octagonal processing of heavy long -axis stick workpieces, including the octagonal fixture at both ends of the working platform. The fixed positioning and loose adjustment of the fixture through positioning blocks, codes, support pillars, and bolts can be achieved The load of the fixture is large, the structure is simple, and the operation is convenient.
The high -load and eight -sided processing of heavy long -axis stick workpieces is realized, ensuring the stability and accuracy of processing, and reducing production costs and operating complexity.
Smart Images
Figure CN222404544U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a clamp, in particular to a clamp structure for assisting eight-sided processing of heavy-duty long-axis rod workpieces, which is mainly used in CNC machining auxiliary equipment and belongs to the technical field of mechanical machining auxiliary equipment. Background Art
[0002] With the huge demand for CNC machine tools in the manufacturing industry and the rapid progress of modern design technology, the application scope of CNC machine tools is constantly expanding, and the market's requirements for manufacturers are becoming higher and higher.
[0003] Round shaft rod workpieces are a common type of workpiece in CNC machining. The applicant found two problems in the process of machining heavy long shaft rod workpieces: ① When machining heavy long shaft rod workpieces, the clamp needs to have a large enough load capacity, but the current clamps (dividing heads) on the market have limited load capacity and cannot meet the needs of heavy long shaft rod workpieces; ② Ordinary clamps are difficult to achieve multi-faceted machining and ensure the positional relationship between each other. Therefore, it is necessary to invent a simple, reliable, stable, and eight-sided fixed clamping fixture.
[0004] After searching the Chinese patent database, no technical solution for the eight-sided processing fixture of heavy-duty long-axis rod workpieces was found to be disclosed in the Chinese patent announcement, although the Chinese patent announcement also disclosed some technical solutions for multi-sided processing fixtures, such as: utility model patents with application numbers 2023214951219, 2023201974068, 2020226539137 and 2020217792155. Although the technical solutions described can solve the technical problems of multi-sided clamping processing of workpieces and have certain technical effects. However, some of its fixture structures have limited load capacity and can only clamp small workpieces for processing, which cannot meet the load requirements of heavy-duty long-axis rod workpieces and cannot be used for heavy-duty long-axis rod workpiece processing; some have complex structures, inconvenient operation, and high costs, and are not suitable for heavy-duty long-axis rod workpiece processing. Therefore, the technical solutions described cannot solve the problems existing in the processing of heavy-duty long-axis rod workpieces in the prior art. Therefore, the present technical solution provides an eight-sided processing fixture for heavy-duty long-axis rod-like workpieces to solve the problem of eight-sided processing of heavy-duty long-axis rod-like workpieces in the prior art. Utility Model Content
[0005] The purpose of the utility model is to solve the problem that the existing multi-sided processing fixture has limited load capacity and cannot meet the needs of heavy long-axis rod workpieces, and to provide a fixture structure for eight-sided processing of heavy long-axis rod workpieces, which has substantial characteristics and improvements such as large load capacity, simple structure, low manufacturing cost, easy operation, and high reliability.
[0006] The purpose of the utility model can be achieved by adopting the following technical solutions:
[0007] A fixture structure for processing eight sides of a heavy-duty long-axis rod-like workpiece comprises a working platform, and its structural features are: a first octagonal fixture is provided at one end of the working platform, and a second octagonal fixture is provided at the other end; a first positioning block is provided on one side of the first octagonal fixture to form a side positioning structure of the first octagonal fixture; a first pressure code is provided on the top surface of the first octagonal fixture; the front part of the first pressure code contacts the top surface of the first octagonal fixture, the rear part is connected to the working platform through a first support column, and the middle part is movably screwed to the working platform through a first bolt to form a first A top surface positioning structure of the octagonal clamp; a second positioning block is provided on one side of the second octagonal clamp to form a side positioning structure of the second octagonal clamp; a second pressure code is provided on the top surface of the second octagonal clamp, the front part of the second pressure code contacts the top surface of the second octagonal clamp, the rear part is connected to the working platform through a second support column, and the middle part is movably screwed to the working platform through a second bolt to form a top surface positioning structure of the second octagonal clamp; the first octagonal clamp and the second octagonal clamp are adjustable and connected on the working platform to form a coaxial structure.
[0008] The purpose of the utility model can also be achieved by adopting the following technical solutions:
[0009] Furthermore, the first positioning block and the second positioning block are arranged on the working platform in an adjustable connection mode to form a coaxial structure. The adjustable connection mode can be a screw connection mode, a position adjustable connection mode or a strip groove position moving mode.
[0010] Furthermore, a tightening sleeve is provided in the second octagonal clamp, and a tightness adjustment structure of the second octagonal clamp is formed by tightening or loosening the tightening sleeve.
[0011] Furthermore, a fastening ring is provided in the first octagonal clamp, and a plurality of adjusting screws are evenly distributed on the fastening ring. By tightening or loosening the adjusting screws, a tightness adjustment structure of the first octagonal clamp is formed.
[0012] The utility model has the following substantial features and improvements:
[0013] 1. The utility model is provided with a first octagonal clamp at one end of the working platform and a second octagonal clamp at the other end; a first positioning block is provided on one side of the first octagonal clamp to form a side positioning structure of the first octagonal clamp and a top surface positioning structure of the first octagonal clamp; a second positioning block is provided on one side of the second octagonal clamp to form a side positioning structure of the second octagonal clamp; the top surface of the second octagonal clamp forms a top surface positioning structure; therefore, the side and top surfaces can be fixedly positioned on the clamps at both ends, solving the problem that the existing multi-faceted processing clamps have limited load capacity and cannot meet the needs of heavy long-axis rod workpieces, and has substantial characteristics and improvements such as large load capacity, simple structure, low manufacturing cost, convenient operation, and high reliability.
[0014] 2. The utility model provides an expansion sleeve at the center of the second octagonal clamp, which is tightened or loosened to form a tightness adjustment structure of the second octagonal clamp. Therefore, the clamp can be tightened by shrinking the expansion sleeve, which facilitates the parallelism of the left and right clamps, and is flexible and convenient to adjust, with high efficiency and other characteristics and improvements.
[0015] 3. The utility model has a fastening ring in the first octagonal clamp, and the fastening ring is evenly distributed with a plurality of adjusting screws. By tightening or loosening the adjusting screws, a tightness adjustment structure of the first octagonal clamp is formed. Therefore, the utility model has a simple structure and is easy to manufacture, and can ensure the accuracy of the eight-sided division on the axis.
[0016] 4. The utility model makes the coaxial outer circle connection of the clamp stable, firm and easy to operate through the addition and adjustment of the expansion sleeve. It is widely used in different divisions of heavy long shafts such as: four equal divisions and six equal divisions. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the working state structure of the utility model.
[0018] Figure 2 for Figure 1 Schematic diagram of the front view of the structure of the second octagonal clamp.
[0019] Figure 3 for Figure 1 Schematic diagram of the front view of the structure of the first octagonal clamp.
[0020] Figure 4 for Figure 1 Schematic diagram of the left view of the structure of the first octagonal clamp.
[0021] Figure 5 Schematic diagram of the workpiece structure.
[0022] Figure 6 for Figure 5 Structural section view along AA axis. DETAILED DESCRIPTION
[0023] Now the utility model is further described in conjunction with the accompanying drawings: Specific embodiment 1:
[0025] Reference Figure 1-Figure 4 The fixture structure for eight-sided processing of heavy-duty long-axis rod-like workpieces involved in this embodiment includes a working platform 10, a first octagonal fixture 2 is provided at one end of the working platform 10, and a second octagonal fixture 3 is provided at the other end. A first positioning block 5-1 is provided on one side of the first octagonal fixture 2 to form a side positioning structure of the first octagonal fixture 2. A first pressure code 8-1 is provided on the top surface of the first octagonal fixture 2. The front part of the first pressure code 8-1 contacts the top surface of the first octagonal fixture 2, the rear part is connected to the working platform 10 through the first support column 7-1, and the middle part is movably screwed with the working platform 10 through the first bolt 6-1 to form the first octagonal fixture 2. The top surface positioning structure of the second octagonal clamp 2 is provided; a second positioning block 5-2 is provided on one side of the second octagonal clamp 3 to form a side positioning structure of the second octagonal clamp 3; a second pressure code 8-2 is provided on the top surface of the second octagonal clamp 3, the front part of the second pressure code 8-2 contacts the top surface of the second octagonal clamp 3, the rear part is connected to the working platform 10 through the second support column 7-2, and the middle part is movably screwed with the working platform 10 through the second bolt 6-2, forming the top surface positioning structure of the second octagonal clamp 3; the first octagonal clamp 2 and the second octagonal clamp 3 are arranged on the working platform 10 in an adjustable connection mode and form a coaxial structure. The adjustable connection mode can be a screw connection mode, a position adjustable connection mode or a strip groove position moving mode.
[0026] In this embodiment:
[0027] The first positioning block 5-1 and the second positioning block 5-2 are arranged on the working platform 10 in an adjustable connection mode to form a coaxial structure. The adjustable connection mode can be a screw connection mode, a position adjustable connection mode or a strip groove position moving mode.
[0028] A clamping sleeve 4 is provided in the second octagonal clamp 3 , and a tightness adjustment structure of the second octagonal clamp 3 is formed by tightening or loosening the clamping sleeve 4 .
[0029] The length of workpiece 1 is L = 2457 mm, and the diameter
[0030] The working principle of this embodiment is as follows:
[0031] 1) First, level the first positioning block 5-1 and the second positioning block 5-2, adjust and fix them on the machine workbench, and lock the positioning blocks at both ends (the first positioning block 5-1 and the second positioning block 5-2). The first octagonal fixture 2 is matched with the outer circle of the workpiece 1 and is locked on the workpiece 1 with the screw fastening ring 2-1. The first octagonal fixture 2 is pressed by the first pressing code 8-1; the expansion sleeve 4 in the second octagonal fixture 3 is loosened so that the second octagonal fixture 3 covers the workpiece 1 at the same time, and then the expansion sleeve 4 is contracted so that the second octagonal fixture 3 is tightly covered with the workpiece 1 as a whole, and the second octagonal fixture 3 is pressed by the second pressing code 8-2;
[0032] 2) Then, the two ends of the workpiece 1 are locked by the first octagonal fixture 2 and the second octagonal fixture 3 coaxially, and then one surface of the workpiece 1 is processed. After the first surface is processed, the other surfaces are processed, and the first octagonal fixture 2 and the second octagonal fixture 3 can be used for accurate indexing;
[0033] 3) After the eight sides of the workpiece 1 are processed, the processing of the workpiece 1 is completed.
[0034] In the actual application of this embodiment, the first octagonal clamp 2 and the second octagonal clamp 3 are synchronously inserted into the workpiece axis, the weight of the workpiece is used to make the left and right clamps parallel, the expansion sleeve 4 is tightened to stabilize the second octagonal clamp 3 on the workpiece axis, and the parallelism of the two clamps is checked with a dial indicator. The two clamps are close to the positioning block and locked by the first pressure code 8-1 and the second pressure code 8-2. After processing one side, the first pressure code 8-1 and the second pressure code 8-2 are released, and the workpiece is slowly turned over by a crane, and the other processing surfaces are processed by the clamp indexing.
[0035] The first octagonal clamp 2 and the second octagonal clamp 3 form an octagonal clamp at both ends to lock the coaxial parts of the workpiece. After processing the first surface, when it is necessary to transfer and process other surfaces, the clamp is used to obtain stable and accurate division. Specific embodiment 2:
[0037] The characteristic of the specific embodiment 2 of the present utility model is that the first positioning block 5-1 and the second positioning block 5-2 are fixedly connected and arranged on the working platform 10 to form a coaxial structure. Specific embodiment 3
[0039] The characteristic of the specific embodiment 3 of the present utility model is that the expansion sleeve 4 in the second octagonal clamp 3 is omitted. The rest is the same as the specific embodiment 1 or the specific embodiment 2.
[0040] The utility model is suitable for multi-faceted processing of various heavy long shafts, with high applicability, simple operation, firm connection, stable and reliable indexing, which reduces clamping time and improves work efficiency.
Claims
1. A fixture structure for eight-sided processing of heavy-duty long-axis rod-like workpieces, comprising a working platform (10), characterized in that: A first octagonal clamp (2) is provided at one end of the working platform (10), and a second octagonal clamp (3) is provided at the other end; a first positioning block (5-1) is provided on one side of the first octagonal clamp (2) to form a side positioning structure of the first octagonal clamp (2); a first pressure code (8-1) is provided on the top surface of the first octagonal clamp (2); the front part of the first pressure code (8-1) contacts the top surface of the first octagonal clamp (2), the rear part is connected to the working platform (10) through a first support column (7-1), and the middle part is movably screwed to the working platform (10) through a first bolt (6-1), so as to form a top surface positioning structure of the first octagonal clamp (2); A second positioning block (5-2) is provided on one side of the rectangular clamp (3) to form a side positioning structure of the second octagonal clamp (3); a second pressure code (8-2) is provided on the top surface of the second octagonal clamp (3); the front portion of the second pressure code (8-2) contacts the top surface of the second octagonal clamp (3), the rear portion is connected to the working platform (10) through a second support column (7-2), and the middle portion is movably screwed to the working platform (10) through a second bolt (6-2), thereby forming a top surface positioning structure of the second octagonal clamp (3); the first octagonal clamp (2) and the second octagonal clamp (3) are arranged on the working platform (10) in an adjustable connection manner to form a coaxial structure.
2. According to claim 1, a fixture structure for eight-sided processing of heavy-duty long-axis rod-like workpieces is characterized by: The first positioning block (5-1) and the second positioning block (5-2) are arranged on the working platform (10) in an adjustable connection manner and form a coaxial structure.
3. A fixture structure for eight-sided processing of heavy-duty long-axis rod workpieces according to claim 1 or 2, characterized in that: A tension sleeve (4) is provided in the second octagonal clamp (3), and a tension adjustment structure of the second octagonal clamp (3) is formed by tightening or loosening the tension sleeve (4).
4. A fixture structure for eight-sided processing of heavy-duty long-axis rod-like workpieces according to claim 1 or 2, characterized in that: A fastening ring (2-1) is provided in the first octagonal clamp (2), and a plurality of adjusting screws are evenly distributed on the fastening ring (2-1). By tightening or loosening the adjusting screws, a tightness adjustment structure of the first octagonal clamp (2) is formed.