A rotating clamping tool for automobile parts
By driving the workpiece to rotate through a worm gear mechanism, the positioning error problem caused by multiple clamping in the existing technology is solved, realizing multi-angle and multi-station machining of automotive parts using a rotary clamping fixture, and ensuring accurate positioning and consistency of the machined surface.
Patent Information
- Application Number
- CN202522126098.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-09
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-10-09
AI Technical Summary
Existing rotary clamping fixtures for automotive parts require multiple re-clamping operations when machining bent parts, leading to accumulated positioning errors, affecting the consistency of machining datum, and easily causing hole diameter deviations and positional errors.
The workpiece is rotated by a worm gear mechanism, enabling multi-angle and multi-station machining with a single clamping. The worm gear mechanism eliminates repeated clamping errors and ensures the positional accuracy between machined surfaces.
It achieves precise positioning for multi-angle, multi-station machining, eliminates repeated clamping errors, and ensures the positional accuracy and consistency of the machined surface.
Smart Images
Figure CN224674333U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining technology, specifically to a rotary clamping fixture for automotive parts. Background Technology
[0002] Rotary clamping fixtures for automotive parts are specialized process equipment used to position, clamp, and controllably rotate rotating or complex curved surface parts (such as shafts, gears, flanges, turbines, etc.) during machining, inspection, or assembly. They typically consist of a rotating mechanism (such as a rotary table or three-jaw chuck), precision fixtures, a drive unit (electric, pneumatic, or manual), and a base. Their core function is to ensure the workpiece rotates precisely and stably around a fixed axis, enabling multi-angle, multi-faceted machining operations or quality inspections at different workstations. This significantly improves machining accuracy, production efficiency, and automation levels, making them a key component of modern intelligent manufacturing production lines. When machining shaft-type parts with non-perpendicular end faces, such as gearbox housings and corner oil supply pipes, it is necessary to first cut a hole or outer circle at one position, and then re-clamp the parts to cut another hole or outer circle. Each re-clamping introduces new positioning errors, resulting in inconsistent machining datums and easily causing quality problems such as hole diameter deviation and positional tolerance. Therefore, a rotary clamping fixture for automotive parts is designed to solve the above problems. Utility Model Content
[0003] (a) Technical problems to be solved
[0004] To address the shortcomings of existing technologies, this utility model provides a rotary clamping fixture for automotive parts. This solves the problem that when processing bent parts, it is necessary to re-clamp them, and each re-clamping introduces new positioning errors, resulting in inconsistent processing datums and easily causing quality problems such as hole diameter deviation and positional error.
[0005] (II) Technical Solution
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] This utility model provides a rotary clamping fixture for automotive parts, comprising: a lathe mounting base, which is bolted to a lathe; a rotating base bolted to the lower front end of the lathe mounting base; an adjusting screw rotatably connected to the upper rear end of the rotating base, the upper end of which extends to the upper end of the lathe mounting base; a lower pressure cover on the upper end of the rotating base, the rear side of which is threaded to the adjusting screw; the rear side of the lower pressure cover slidably connected to the upper interior of the lathe mounting base; a fixture mounting base rotatably connected to the front end of the rotating base; a worm gear fixedly connected to the lower end of the fixture mounting base; a worm meshing with the rear side of the worm gear; the worm rotatably connected to the interior of the rotating base; an adjusting rod rotatably connected to the rear end of the rotating base and located behind the worm; the adjusting rod and the worm meshing with a gear; and an angle gauge fixedly connected to the middle of the lower end of the rotating base, the pointer shaft of which is fixedly connected to the lower end of the fixture mounting base.
[0008] Preferably, the lower rear end of the rotating base is positioned below the center of the lathe mounting base.
[0009] Preferably, the rotating base and the lower pressure cover are both of a split structure, with the rear section inside the lathe mounting base and the front section outside being fixed together by bolts.
[0010] Preferably, a guide post is fixed on the upper surface of the rotating base, and a guide hole that cooperates with the guide post is provided on the lower pressure cover.
[0011] Preferably, the lower surface of the lower pressure cover is a flat plane.
[0012] Preferably, the left surface of the rotating base is connected to a fixing rod by a thread, the end of the fixing rod is an arc-shaped rubber head, and the left surface of the worm gear is provided with an arc groove.
[0013] Preferably, the rotating base and the fixture mounting base are connected by a sealed bearing.
[0014] (III) Beneficial Effects
[0015] This utility model provides a rotary clamping fixture for automotive parts, which has at least the following advantages compared with the prior art:
[0016] This automotive parts rotary clamping fixture drives the workpiece to rotate through a worm gear mechanism, enabling multi-angle and multi-station machining with a single clamping, completely eliminating repeated clamping errors and effectively ensuring the positional accuracy between the machined surfaces. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a cross-sectional view of the present invention;
[0019] Figure 3 This is an anatomical view of the present invention;
[0020] Figure 4 This is a partial enlarged view of the present invention.
[0021] In the diagram: 1. Lathe mounting base; 2. Rotating base; 3. Adjusting screw; 4. Lower pressure cover; 5. Fixture mounting base; 6. Worm gear; 7. Worm; 8. Adjusting rod; 9. Angle gauge; 21. Guide post; 22. Fixing rod. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 This utility model provides a technical solution: a rotary clamping fixture for automotive parts, comprising: a lathe mounting base 1, which is bolted to a lathe; a rotating base 2 is bolted to the lower front end of the lathe mounting base 1; an adjusting screw 3 is rotatably connected to the upper rear end of the rotating base 2; the upper end of the adjusting screw 3 extends to the upper end of the lathe mounting base 1; a lower pressure cover 4 is provided at the upper end of the rotating base 2; the rear side of the lower pressure cover 4 is threaded to the adjusting screw 3; and the rear side of the lower pressure cover 4 is connected to the lathe mounting base 1. The upper part of the mounting base 1 is slidably connected to the interior. The front end of the rotating base 2 is rotatably connected to the fixture mounting base 5. The lower end of the fixture mounting base 5 is fixedly connected to the worm gear 6. The rear side of the worm gear 6 is meshed with the worm 7. The worm 7 is rotatably connected to the interior of the rotating base 2. The rear end of the rotating base 2 and the rear side of the worm 7 is rotatably connected to the adjusting rod 8. The adjusting rod 8 and the worm 7 are connected by gear meshing. The lower middle of the rotating base 2 is fixedly connected to the angle gauge 9. The pointer shaft of the angle gauge 9 is fixedly connected to the lower end of the fixture mounting base 5.
[0024] In use, the lathe mounting base 1 is installed on the lathe. After adjustment, the lower pressure cover 4 is pushed from the bottom to the top of the lathe mounting base 1. The upper end of the adjusting screw 3 is rotatably connected to the upper end of the lathe mounting base 1. Rotating the adjusting screw 3 causes the lower pressure cover 4 to slide upward. Then, the upper end of the rotating base 2 is connected to the lower end of the adjusting screw 3 through a bearing. The rotating base 2 is fixed to the lower side of the front surface of the lathe mounting base 1 with bolts. The pre-machined workpiece mounting fixture is fixed to the fixture mounting base 5 with bolts. During machining, the workpiece is placed on the fixture. When the worm gear 7 rotates, it drives the worm wheel 6 to rotate. The middle of the adjusting rod 8 is connected to the end of the worm wheel 6 through gear meshing. When the adjusting rod 8 rotates, it drives the worm gear 7 to advance. Rotating the handle at the end of the worm gear 7 once will rotate the fixture mounting base 5 ten degrees. Rotating the handle at the end of the adjusting rod 8 once will rotate the worm gear 7 one-tenth of a turn, and the fixture mounting base 5 will rotate one degree. First, adjust the angle of the workpiece on the fixture mounting base 5 using the worm gear 7 and the adjusting rod 8. The angle can be referred to the angle table 9 at the bottom. After adjustment, rotate the adjusting screw 3 to make the lower pressure cover 4 slide downward to clamp the upper surface of the workpiece. After processing, lift the lower pressure cover 4, and then adjust the angle again using the worm gear 7 and the adjusting rod 8 to move the other end face of the workpiece to the processing position. Then lower the lower pressure cover 4 to fix it and process it. During the process, the workpiece is always installed inside the fixture to ensure coaxiality during processing.
[0025] like Figure 1-3 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the lower rear end of the rotating base 2 is positioned below the center of the lathe mounting base 1.
[0026] Analysis of the above structure shows that the lower rear end of the rotating base 2 is lower than the center of the lathe mounting base 1 to ensure that the center of the workpiece can be aligned with the center of the lathe after the fixture is installed.
[0027] like Figure 1-3 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the rotating base 2 and the lower pressure cover 4 both adopt a split structure, and the rear section located inside the lathe mounting base 1 and the front section located outside are fixedly connected by bolts.
[0028] Analysis of the above structure shows that different workpieces can be quickly changed by altering the positions of the rotating base 2 and the front end of the lower pressure cover 4.
[0029] like Figure 1-3 As shown in the figure, this utility model embodiment provides an implementation method. Based on the above implementation method, a guide post 21 is fixed on the upper surface of the rotating base 2, and a guide hole that cooperates with the guide post 21 is opened on the lower pressure cover 4.
[0030] Analysis of the above structure shows that the guide post 21 and the guide hole can further prevent the position of the lower cover 4 from shifting when it is pressed down.
[0031] like Figure 1-3 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the lower surface of the lower pressure cover 4 is a flat plane.
[0032] Analysis of the above structure shows that the lower surface of the lower pressure cover 4 is a flat plane to ensure that the lower surface of the lower pressure cover 4 contacts the workpiece first.
[0033] like Figure 1-4 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the left surface of the rotating base 2 is connected to a fixing rod 22 by a thread. The end of the fixing rod 22 is an arc-shaped rubber head, and the left surface of the worm gear 7 is provided with an arc groove.
[0034] Analysis of the above structure shows that when the fixing rod 22 is turned inward, the rubber head at the end will press against the inside of the arc groove on the surface of the worm gear 7, thereby further preventing the fixture mounting base 5 from rotating accidentally.
[0035] like Figure 1-3 As shown, this utility model embodiment provides an implementation method. Based on the above implementation method, the rotating base 2 and the fixture mounting base 5 are connected by a sealed bearing.
[0036] Analysis of the above structure shows that the rotating base 2 and the fixture mounting base 5 are connected by a sealed bearing to prevent cutting fluid from entering the interior of the rotating base 2 through gaps.
[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rotary clamping fixture for automotive parts, characterized in that, include: A lathe mounting base (1) is bolted to the lathe. A rotating base (2) is bolted to the lower front end of the lathe mounting base (1). An adjusting screw (3) is rotatably connected to the upper rear end of the rotating base (2). The upper end of the adjusting screw (3) extends to the upper end of the lathe mounting base (1). A lower pressure cover (4) is provided at the upper end of the rotating base (2). The rear side of the lower pressure cover (4) is threaded to the adjusting screw (3). The rear side of the lower pressure cover (4) is slidably connected to the upper interior of the lathe mounting base (1). (2) is rotatably connected to a fixture mounting base (5) at its front end. A worm gear (6) is fixedly connected to the lower end of the fixture mounting base (5). A worm (7) is meshed with the rear side of the worm gear (6). The worm (7) is rotatably connected to the interior of the rotating base (2). An adjusting rod (8) is rotatably connected to the rear end of the rotating base (2) and located behind the worm (7). The adjusting rod (8) is meshed with the worm (7) through gears. An angle gauge (9) is fixedly connected to the middle of the lower end of the rotating base (2). The pointer shaft of the angle gauge (9) is fixedly connected to the lower end of the fixture mounting base (5).
2. The rotary clamping fixture for automotive parts according to claim 1, characterized in that: The lower rear end of the rotating base (2) is lower than the center of the lathe mounting base (1).
3. The rotary clamping fixture for automotive parts according to claim 1, characterized in that: The rotating base (2) and the lower pressure cover (4) are both of a split structure. The rear section inside the lathe mounting base (1) and the front section outside are fixed by bolts.
4. The rotary clamping fixture for automotive parts according to claim 1, characterized in that: The upper surface of the rotating base (2) is fixed with a guide post (21), and the lower pressure cover (4) is provided with a guide hole that cooperates with the guide post (21).
5. The rotary clamping fixture for automotive parts according to claim 1, characterized in that: The lower surface of the lower cover (4) is a flat plane.
6. The rotary clamping fixture for automotive parts according to claim 1, characterized in that: The left surface of the rotating base (2) is connected to a fixing rod (22) by a thread. The end of the fixing rod (22) is an arc-shaped rubber head. The left surface of the worm gear (7) is provided with an arc groove.
7. The rotary clamping fixture for automotive parts according to claim 1, characterized in that: The rotating base (2) and the fixture mounting base (5) are connected by a sealed bearing.