A four-axis machining fixture for round bar parts
By designing a four-axis machining fixture for round bar parts, and using a combination of arc-shaped support grooves and clamping arms, multiple workpieces can be stably fixed. This solves the problems of low efficiency and unstable precision caused by multiple disassembly and assembly in existing technologies, improves machining efficiency and precision, and reduces costs.
Patent Information
- Application Number
- CN202521947553.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-09-10
AI Technical Summary
In the current process of machining round bar parts, the repeated disassembly and assembly of fixtures leads to low machining efficiency, unstable accuracy, and high cost, making it difficult to achieve stable machining of multiple processes.
Design a four-axis machining fixture for round bar parts, including a base plate, a support mechanism, a positioning mechanism and a clamping mechanism. Multiple workpieces are fixed at one time through the workpiece fixing unit. The workpieces are machined in multiple positions by using an arc-shaped support groove and a clamping arm.
It improves processing efficiency, ensures processing accuracy, reduces production costs, increases processing stability, and avoids the need to change fixed tooling multiple times.
Smart Images
Figure CN224939554U_ABST
Abstract
Description
Technical fields:
[0001] This utility model belongs to the field of round bar parts processing technology, and specifically relates to a four-axis machining fixture for round bar parts. Background technology:
[0002] After the round bar part is machined, multiple processes such as hole and slot machining are required. Since the holes and slots are located on different surfaces of the bar, each process requires corresponding tooling. Repeated disassembly and assembly not only reduces machining efficiency but also affects the accuracy of machining positions. Multiple fixed tooling also increases production costs. Currently, in the machining of round bar parts, one part is machined on several surfaces before moving on to the next. After a batch of parts is machined, the machining errors vary significantly, affecting machining stability. Therefore, designing a fixed tooling that can accommodate multiple machining processes and clamp multiple parts at once is a problem that needs to be solved.
[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content:
[0004] The purpose of this utility model is to provide a four-axis machining fixture for round bar parts, thereby overcoming the defects in the prior art.
[0005] To achieve the above objectives, this utility model provides a four-axis machining fixture for round bar parts, including a base plate, a support mechanism, a positioning mechanism, and a clamping mechanism. The clamping plate is divided into a front machining area and a rear machining area. The support mechanism and the clamping mechanism are symmetrically arranged in the front machining area, with each clamping mechanism corresponding to two support mechanisms on the same side. The positioning mechanism is located on one side of the rear machining area, with each positioning mechanism and two oppositely arranged support mechanisms on the same straight line. The two oppositely arranged support mechanisms, together with their corresponding clamping and positioning mechanisms, form a workpiece fixing unit. The support mechanism includes a support block and a support groove. The support block has a support groove. Adapted to the workpiece structure, the clamping mechanism is located above the support groove. Two opposing support blocks within a workpiece fixing unit serve as the front support block and the rear support block, respectively. The outer side of the front support block serves as the machining station for the workpiece end face and the annular groove. A machining groove is provided on the rear machining area between the rear support block and the positioning mechanism. The position of the machining groove corresponds to the machining position of the square groove on the outer surface of the workpiece. The area between the rear support block and the positioning mechanism serves as the machining station for the square groove of the workpiece. The workpiece is fixed by the workpiece fixing unit, and a corresponding number of workpieces are fixed by multiple workpiece fixing units. The four machining positions of the workpiece are machined through the machining stations for the workpiece end face and the annular groove, and the machining station for the square groove.
[0006] Preferably, in the technical solution, the support groove is a V-shaped groove, and the area where the support groove contacts the workpiece is an arc-shaped structure, which matches the workpiece structure.
[0007] Preferably, in the technical solution, the clamping mechanism includes a clamping arm and a clamping block. The clamping arm is movably mounted on the front processing area by screws. The clamping arm is located above an adjacent support block. The clamping blocks are symmetrically arranged at both ends of the bottom surface of the clamping arm. The bottom surface of the clamping block is provided with a clamping groove, and the clamping groove structure is mated with the cylindrical surface of the workpiece.
[0008] Preferably, in the technical solution, the positioning mechanism includes a connecting part and a positioning part. The connecting part is connected to one side of the rear processing area, and the positioning part is provided on the connecting part. The positioning part is located on the same straight line as the front support block and the rear support block. The positioning part is located in front of the line connecting the two support grooves, and a processing groove is provided on the rear processing area between the positioning part and the rear support block.
[0009] Preferably, in the technical solution, side plates are provided on both sides of the base plate, and rotary grooves are provided on the side plates. The rotary grooves are connected to external rotating equipment, which facilitates the rotation of the base plate when processing the square groove at the bottom of the workpiece, so that the processing area of the square groove at the bottom of the workpiece is rotated to the top.
[0010] Compared with the prior art, the present invention has the following beneficial effects:
[0011] Using the machining fixture of this patent, when machining the end face, annular groove, and two square grooves of a workpiece, there is no need to change to other fixtures, which improves machining efficiency, ensures machining accuracy, and reduces production costs. This patented machining fixture can fix multiple workpieces at once, allowing the next process to be performed only after all workpieces have completed the same process, increasing machining stability. Attached image description:
[0012] Figure 1 This is a schematic diagram of the four-axis machining fixture structure for round bar parts according to this utility model;
[0013] Figure 2 This is the main view of the four-axis machining fixture for round bar parts according to this utility model;
[0014] Figure 3 This diagram shows the usage state of the four-axis machining fixture for round bar parts according to this utility model. Detailed implementation method:
[0015] The specific embodiments of this utility model are described in detail below, but it should be understood that the scope of protection of this utility model is not limited to the specific embodiments.
[0016] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.
[0017] like Figure 1-2 As shown, a four-axis machining fixture for round bar parts includes a base plate 1, a support mechanism 2, a positioning mechanism 3, a clamping mechanism 4, and a side plate 5. The clamping plate 1 is divided into a front machining area 10 and a rear machining area 11. The support mechanism 2 and the clamping mechanism 4 are symmetrically arranged in the front machining area 10, and each clamping mechanism 4 corresponds to two support mechanisms 2 on the same side. The positioning mechanism 3 is arranged on one side of the rear machining area 11. Each positioning mechanism 3 and two oppositely arranged support mechanisms 2 are located on the same straight line. The two oppositely arranged support mechanisms 2 and the corresponding clamping mechanism 4 and positioning mechanism 3 form a workpiece fixing unit.
[0018] The support mechanism 2 includes a support block and a support groove 20. The support block is provided with a support groove 20, which is a V-shaped groove. The area of the support groove 20 that contacts the workpiece 6 is an arc-shaped structure 21, which is matched with the structure of the workpiece 6. Two support blocks arranged opposite to each other in a workpiece fixing unit are respectively used as the front support block 22 and the rear support block 23. The outer side of the front support block 22 is used as the processing station for the workpiece end face and the annular groove.
[0019] The positioning mechanism 3 includes a connecting part 30 and a positioning part 31. The connecting part 30 is connected to one side of the rear processing area 11. The positioning part 31 is provided on the connecting part 30. The positioning part 31 is located on the same straight line as the front support block 22 and the rear support block 23. The positioning part 31 is located in front of the line connecting the two support grooves 20. A processing groove 12 is provided on the rear processing area 11 between the positioning part 31 and the rear support block 23. The position of the processing groove 12 corresponds to the processing position of the square groove on the outer surface of the workpiece 6. The area between the rear support block 23 and the positioning part 31 serves as the processing station for the square groove of the workpiece.
[0020] The clamping mechanism 4 includes a clamping arm 40 and a clamping block 41. The clamping arm 40 is vertically mounted on the front processing area 10 by screws 42. The clamping arm 40 is located above the adjacent support block. The clamping blocks 41 are symmetrically arranged at both ends of the bottom surface of the clamping arm 40. The bottom surface of the clamping block 41 is provided with a clamping groove 43. The structure of the clamping groove 43 is in sync with the cylindrical surface of the workpiece 6.
[0021] Side plates 5 are provided on both sides of the base plate 1. Rotary grooves 50 are provided on the side plates 5. The rotary grooves 50 are connected to external rotating equipment, so that when processing the square groove at the bottom of the workpiece 6, the base plate 1 can be rotated so that the processing area of the square groove at the bottom of the workpiece 6 can be rotated to the top.
[0022] like Figure 3 As shown, six workpieces 6 are placed on their corresponding workpiece fixing units, with the rear ends of workpieces 6 abutting against the positioning part 31. Rotating the screw 42 causes the clamping arm 40 to descend, and the clamping block 41 presses the workpieces 6 firmly. First, holes are machined on the end faces of the workpieces 6 at the machining stations for the end faces and annular grooves. After the end faces of all six workpieces 6 are machined, the annular grooves are machined. After the annular grooves are machined, the square grooves on the top surface of the workpieces 6 are machined at the workpiece square groove machining station. After the square grooves on the top surfaces of all six workpieces 6 are machined, an external rotating device rotates the base plate 1 180° to machine the square grooves on the bottom surfaces of the six workpieces 6, until all workpieces 6 are machined. During the machining process, no other fixing fixtures need to be changed, improving machining efficiency, ensuring machining accuracy, and reducing production costs. When machining multiple workpieces 6, all workpieces 6 are completed in the same process before proceeding to the next process, increasing machining stability.
[0023] The description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical applications, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the invention, as well as various different choices and variations. The scope of the invention is intended to be defined by the claims and their equivalents.
Claims
1. A round bar part four-axis machining fixing tool, characterized in that: The system includes a base plate, a support mechanism, a positioning mechanism, and a clamping mechanism. The base plate is divided into a front processing area and a rear processing area. The support mechanism and the clamping mechanism are symmetrically arranged in the front processing area, with each clamping mechanism corresponding to two support mechanisms on the same side. The positioning mechanism is located on one side of the rear processing area, with each positioning mechanism and two oppositely arranged support mechanisms on the same straight line. The two oppositely arranged support mechanisms, together with their corresponding clamping and positioning mechanisms, form a workpiece fixing unit. The support mechanism includes a support block and a support groove. The support block has a support groove that is adapted to the workpiece structure. The clamping mechanism is located above the support groove. Two oppositely arranged support blocks within a workpiece fixing unit serve as the front support block and the rear support block, respectively. The outer side of the front support block serves as the processing station for the workpiece end face and the annular groove. A processing groove is provided in the rear processing area between the rear support block and the positioning mechanism. The position of the processing groove corresponds to the processing position of the square groove on the outer surface of the workpiece. The area between the rear support block and the positioning mechanism serves as the processing station for the square groove of the workpiece.
2. The round bar part four-axis machining fixing tooling of claim 1, wherein: The support groove is a V-shaped groove, and the area where the support groove contacts the workpiece is an arc-shaped structure that matches the workpiece structure.
3. The round bar part four-axis machining fixing tooling of claim 1, wherein: The clamping mechanism includes a clamping arm and a clamping block. The clamping arm is mounted on the front processing area in a height-adjustable manner by screws. The clamping arm is located above the adjacent support block. The clamping blocks are symmetrically arranged at both ends of the bottom surface of the clamping arm. The bottom surface of the clamping block is provided with a clamping groove, and the clamping groove structure is matched with the cylindrical surface of the workpiece.
4. The round bar part four-axis machining fixing tooling of claim 1, wherein: The positioning mechanism includes a connecting part and a positioning part. The connecting part is connected to one side of the rear processing area. The positioning part is provided on the connecting part. The positioning part, the front support block, and the rear support block are on the same straight line. The positioning part is located in front of the line connecting the two support grooves. A processing groove is provided on the rear processing area between the positioning part and the rear support block.
5. The round bar part four-axis machining fixing tooling of claim 1, wherein: Side plates are provided on both sides of the base plate, and rotary grooves are provided on the side plates, which are connected to external rotating equipment.