A lathe concentricity adjusting device
Automatic concentricity adjustment is achieved through a motor-driven rotary chuck and electric cylinder system, which solves the problem of difficult manual adjustment and improves the machining accuracy of tubular workpieces and the applicability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YICHANG XINYUEN ELECTROMECHANICAL TECH CO LTD
- Filing Date
- 2025-06-04
- Publication Date
- 2026-05-26
AI Technical Summary
When adjusting the concentricity of tubular workpieces, existing lathes are difficult to operate manually and are highly subjective, resulting in poor machining results. Furthermore, the clamping seats are limited to short workpieces and have insufficient applicability.
A motor-driven rotary chuck and electric cylinder are used to adjust the clamping blocks. The combination of the motor and electric cylinder enables automatic concentricity adjustment of the pipe fittings, which can adapt to the processing of pipe fittings of different lengths.
It improves the efficiency and accuracy of concentricity adjustment for tubular workpieces, expands the applicability of the equipment to workpieces of different lengths, and reduces the subjectivity of manual operation.
Smart Images

Figure CN224274162U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of processing equipment technology, specifically a lathe concentricity adjustment device. Background Technology
[0002] Concentricity is the degree of offset of the center of a circle. It is a special formation of coaxiality. When processing tubular workpieces, it is necessary to adjust the concentricity of the tubular workpieces to avoid jumping when the tubular workpieces are rotated, which would affect the processing effect of the tubular workpieces.
[0003] In a Chinese patent with publication number CN220515449U entitled "A Processing Device with Adjustable Concentricity," a tubular workpiece is inserted through an adjusting frame at one end, which contacts a rotating chuck at the other. A control clamp is then used to hold and fix the tubular workpiece at one end. The concentricity of the workpiece is then measured using a concentricity meter. Deviations in the concentricity of the workpiece can affect its processing. Therefore, by rotating the adjusting device, a threaded rod pushes the clamping seat to move, which in turn compresses the tubular workpiece. This allows for convenient and effective adjustment of the workpiece's concentricity. After adjustment, rotating other adjusting devices allows for clamping of the workpiece in various positions, preventing concentricity shifts during processing and ensuring optimal subsequent processing results.
[0004] When the aforementioned equipment clamps tubular workpieces using a clamping seat, the operator needs to manually rotate the threaded rod to adjust the clamping seat. However, manual adjustment makes it difficult to quickly achieve concentricity adjustment for tubular workpieces, and the subjective nature of manual operation reduces the concentricity effect. Furthermore, the clamping seat is relatively fixed, limiting its ability to clamp short or single-dimensional workpieces. To address these issues, the inventor proposes a lathe concentricity adjustment device. Utility Model Content
[0005] To address the challenges of quickly adjusting the concentricity of tubular workpieces using manual adjustment, and the inherent subjectivity of manual operation, this invention aims to provide a lathe concentricity adjustment device.
[0006] To solve the above technical problems, the present invention adopts the following technical solution: a lathe concentricity adjustment device, including a worktable, a drive slide symmetrically fixedly connected to the top of the worktable near the center of one side, a base between the two drive slides, a mounting box fixedly connected to the top of the base near the center of one side, a mounting plate rotatably connected to the center of the side end of the mounting box, a rotary chuck provided on the side end of the mounting plate, a mounting plate slidably connected to the top of the base near the mounting box, and the mounting plate and the mounting plate are at the same level, a mounting box fixedly connected to the top of the mounting plate near the center of one side, a square plate rotatably connected to the top center of the mounting box, sliding blocks symmetrically slidably connected to the top of the mounting box near the center, curved connecting rods symmetrically rotatably connected between the two sliding blocks and the square plate near the center, and the two curved connecting rods are staggered, and clamping blocks symmetrically fixedly connected to the top of the two sliding blocks near the square plate.
[0007] Preferably, a motor is provided at the center of the mounting box, and the motor output end passes through the mounting box and is fixedly connected to the square plate. A motor is provided at the center of the side wall of the mounting box, and the motor output end passes through the mounting box and is fixedly connected to the mounting plate.
[0008] Preferably, a vertical plate is fixedly connected to the center of the top of the mounting plate near the mounting box, and an annular groove is opened at the center of the top of the vertical plate. An electric cylinder is set on the side wall of the mounting box and below the motor, and the output end of the electric cylinder passes through the mounting box and is fixedly connected to the vertical plate.
[0009] Preferably, a mounting bracket is fixedly connected to the top of the workbench and near the center of the other side; the mounting box has a detachable door on the side away from the mounting plate; and the mounting box has a detachable door on the side away from the upright plate.
[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0011] 1. In this utility model, the tubular workpiece is clamped and limited by a rotating chuck. When the concentricity of the tubular workpiece deviates, the working motor can drive the relevant components to move the clamping blocks in opposite directions to clamp and adjust the workpiece. This effectively avoids the concentricity deviation of the tubular workpiece during processing. Compared with manual operation by rotating the bolts to move the clamping blocks, this method can improve the concentricity of the tubular workpiece.
[0012] 2. In this utility model, when processing longer pipe fittings, the electric cylinder can be activated to make the vertical plate drive the mounting plate to move horizontally above the base, thereby limiting other positions of the longer pipe fittings, meeting the processing needs of pipe fittings of different lengths, improving the practicality of the equipment and expanding the scope of application of the equipment. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a cross-sectional view of the mounting box of this utility model.
[0016] Figure 3 This is a cross-sectional view of the mounting box of this utility model.
[0017] Figure 4 This utility model Figure 2 Enlarged structural diagram at point A in the middle.
[0018] In the diagram: 1-Workbench; 11-Drive slide; 2-Mounting frame; 3-Base; 31-Mounting box; 32-Motor; 33-Electric cylinder; 34-Rotary chuck; 35-Mounting plate; 4-Mounting plate; 41-Upright plate; 42-Mounting box; 43-Square plate; 44-Sliding block; 45-Bent connecting rod; 46-Motor; 47-Clamping block. Detailed Implementation
[0019] 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.
[0020] Example:
[0021] like Figures 1 to 4 As shown, this utility model provides a lathe concentricity adjustment device, specifically including a worktable 1. A drive slide 11 is symmetrically fixedly connected to the top of the worktable 1 near the center of one side. A base 3 is provided between the two drive slides 11. A connecting seat adapted to the slider of the drive slide 11 is provided at the bottom of the base 3. The connection is fastened by T-bolts, which can realize the precise lateral movement of the base 3 on the drive slide 11. A mounting box 31 is fixedly connected to the top of the base 3 near the center of one side. A mounting plate 35 is rotatably connected to the center of the side end of the mounting box 31. A rotary chuck 34 is provided on the side end of the mounting plate 35. The rotary chuck 34 can be a three-jaw self-centering chuck. The surface of the jaws is hardened to stably clamp the workpiece.
[0022] A mounting plate 4 is slidably connected to the top of the base 3 near the mounting box 31, and the mounting plate 4 and the mounting disk 35 are at the same level. A mounting box 42 is fixedly connected to the top of the mounting plate 4 near the center of one side. A square plate 43 is rotatably connected to the top center of the mounting box 42. A dovetail groove guide rail is symmetrically arranged near the center of the top of the mounting box 42. Two sliding blocks 44 are slidably connected to the dovetail groove guide rail through matching dovetail groove sliders. Sliding blocks 44 are symmetrically slidably connected to the top center of the mounting box 42. A curved connecting rod 45 is symmetrically rotatably connected between the two sliding blocks 44 and the square plate 43 near the center, and the two curved connecting rods 45 are staggered. Clamping blocks 47 are symmetrically fixedly connected to the top of the two sliding blocks 44 near the square plate 43. The inner side of the clamping block 47 is provided with anti-slip texture and inlaid with wear-resistant ceramic pieces, which can effectively prevent the workpiece from slipping during clamping and reduce wear. The electrical components in this application are electrically connected to their compatible power supplies via wires, and a suitable controller should be selected according to the actual situation to meet the control requirements. The detailed connection methods are well known in the art.
[0023] See Figure 3 A motor 46 is located at the center of the mounting box 42, and the output end of the motor 46 passes through the mounting box 42 and is fixedly connected to the square plate 43. By adopting the above technical solution, the motor 46 can achieve precise angle control, and its output end passes through the mounting box 42 and is fixedly connected to the square plate 43 via a flexible coupling.
[0024] See Figure 2 A motor 32 is installed at the center of the side wall of the mounting box 31, and the output end of the motor 32 passes through the mounting box 31 and is fixedly connected to the mounting plate 35. By adopting the above technical solution, the speed of the motor 32 can be adjusted according to the usage requirements, and its output end is fixedly connected to the mounting plate 35 through the mounting box 31 via a high-precision expansion coupling.
[0025] See Figure 2 and Figure 3 A vertical plate 41 is fixedly connected to the center of the top of the mounting plate 4, near the center of the mounting box 31. An annular groove is formed at the center of the top of the vertical plate 41. By adopting the above technical solution, an annular groove is formed at the center of the top of the vertical plate 41. The annular groove has an annular cross-section, which allows the rotary chuck 34 to work normally.
[0026] See Figure 3 and Figure 4 An electric cylinder 33 is installed on the side wall of the mounting box 31 and below the motor 32. The output end of the electric cylinder 33 passes through the mounting box 31 and is fixedly connected to the upright plate 41. By adopting the above technical solution, the electric cylinder 33 is activated, thereby causing the fixedly connected upright plate 41 to drive the mounting plate 4 to move horizontally.
[0027] See Figure 1A mounting bracket 2 is fixedly connected to the top of the workbench 1 and near the center of the other side. By adopting the above technical solution, the mounting bracket 2 is used to install ejector pins or other equipment, and the top of the base 3 can be equipped with auxiliary processing equipment (dial indicator) according to actual usage requirements.
[0028] See Figure 2 and Figure 3 The mounting box 31 has a detachable door on the side away from the mounting plate 35, and the mounting box 42 has a detachable door on the side away from the upright plate 41. The use of these technical solutions, including the installation of the box and the door, facilitates the maintenance and repair of the internal components.
[0029] The working principle of this application is as follows: When using this device, the pipe to be processed is first placed at the center of the side end of the rotary chuck 34. Then, the rotary chuck 34 is used to clamp and limit it, and the device on the mounting frame 2 is used to process it. When the concentricity of the tubular workpiece deviates, the working motor 46 is used to rotate the fixedly connected square plate 43. Then, with the cooperation between the two bent connecting rods 45, the two sliding blocks 44 can drive the clamping blocks 47 to move towards each other, thereby realizing the clamping of the tubular workpiece. This can avoid the concentricity of the tubular workpiece from shifting during the processing, which would affect the subsequent processing effect.
[0030] When the pipe fitting being processed is long, the electric cylinder 33 is activated, which causes the fixedly connected vertical plate 41 to move horizontally above the base 3 along with the mounting plate 4. This allows for limiting other positions of the long pipe fitting, thereby improving the practicality of the equipment during use.
[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.
[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A lathe concentricity adjustment device, comprising a worktable (1), characterized in that: The workbench (1) is symmetrically and fixedly connected to a drive slide (11) near the center of one side at the top of the workbench (1). A base (3) is provided between the two drive slides (11). A mounting box (31) is fixedly connected to the center of one side at the top of the base (3). A mounting plate (35) is rotatably connected to the center of the side end of the mounting box (31). A rotating chuck (34) is provided on the side end of the mounting plate (35). A mounting plate (4) is slidably connected to the top of the base (3) near the mounting box (31), and the mounting plate (4) and the mounting disk (35) are at the same level. A mounting box (42) is fixedly connected to the top of the mounting plate (4) near the center of one side. A square plate (43) is rotatably connected to the center of the top of the mounting box (42). A sliding block (44) is symmetrically slidably connected to the top of the mounting box (42) near the center. A curved connecting rod (45) is symmetrically rotatably connected between the two sliding blocks (44) and the square plate (43) near the center, and the two curved connecting rods (45) are staggered. A clamping block (47) is symmetrically fixedly connected to the top of the two sliding blocks (44) near the square plate (43).
2. The lathe concentricity adjustment device as described in claim 1, characterized in that, A motor (46) is provided at the center of the mounting box (42), and the output end of the motor (46) passes through the mounting box (42) and is fixedly connected to the square plate (43).
3. The lathe concentricity adjustment device as described in claim 1, characterized in that, A motor (32) is provided at the center of the side wall of the mounting box (31), and the output end of the motor (32) passes through the mounting box (31) and is fixedly connected to the mounting plate (35).
4. The lathe concentricity adjustment device as described in claim 1, characterized in that, A vertical plate (41) is fixedly connected to the center of the top of the mounting plate (4) near the mounting box (31), and an annular groove is provided at the center of the top of the vertical plate (41).
5. A lathe concentricity adjustment device as described in claim 4, characterized in that, An electric cylinder (33) is provided on the side wall of the mounting box (31) and below the motor (32). The output end of the electric cylinder (33) passes through the mounting box (31) and is fixedly connected to the upright plate (41).
6. The lathe concentricity adjustment device as described in claim 1, characterized in that, A mounting bracket (2) is fixedly connected to the top of the workbench (1) and near the center of the other side.
7. A lathe concentricity adjustment device as described in claim 1, characterized in that, The mounting box (31) has a detachable door on the side away from the mounting plate (35), and the mounting box (42) has a detachable door on the side away from the upright plate (41).