Fixture for numerical control lathe for punching center hole

By designing a CNC lathe fixture with a multi-directional adjustable clamping structure, the problems of high workload and low precision caused by manual fixing of existing drilling machines are solved, and the workpiece is stably clamped and accurately drilled.

CN223997891UActive Publication Date: 2026-03-17NEIJIANG YUTIAN MACHINERY MFG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-19
Publication Date
2026-03-17

AI Technical Summary

Technical Problem

Existing small drilling machines require manual fixation of the workpiece during processing, which is labor-intensive and cannot guarantee processing accuracy and has poor applicability.

Method used

A multi-directional adjustable clamping structure is designed, comprising a fixed base, a clamping bracket, an adjusting threaded rod, an adjusting clamping plate, a mounting rod, a combined connecting rod, a first fixed frame, a second fixed frame, and an adjusting locking assembly. The workpiece is fixed by the multi-directional adjustable clamping structure to meet the needs of different drilling positions.

Benefits of technology

It achieves stable clamping of the workpiece, improves machining accuracy and efficiency, reduces manpower consumption, and enhances the applicability of the drilling machine.

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    Figure CN223997891U_ABST
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Abstract

The utility model discloses a clamp for a numerical control lathe for punching a center hole, which comprises a fixed seat, a fixed seat, a clamping mechanism and a clamping mechanism, wherein the fixed seat is provided with a drilling machine multidirectional adjusting type clamping structure; the multi-directional adjusting type clamping structure of the drilling machine comprises a clamping support, an adjusting threaded rod, an adjusting clamping plate, a mounting rod, a combined connecting rod, a first fixing frame, a second fixing frame and an adjusting locking assembly. The utility model relates to the technical field of machine tool equipment, and has the beneficial effects that the problems that the working intensity is higher, the machining precision cannot be ensured, the machining efficiency is high, and the machining cost is high because a workpiece is fixed manually and directly when the conventional small drilling machine is used for machining and needs to be manually resisted against the rotating force generated during drilling are solved. And a workpiece cannot be adjusted and fixed according to the position of a hole when the workpiece is fixed through a fixed clamp, and the applicability is poor.
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Description

Technical Field

[0001] This utility model relates to the field of lathe fixture technology, specifically a CNC lathe fixture for drilling center holes. Background Technology

[0002] A drilling machine is a machine tool used to machine holes in workpieces. It is widely used in machinery manufacturing, metal processing, woodworking, construction and other fields. The drilling machine cuts the workpiece with a rotating drill bit to form a hole of the required size and shape. Existing small drilling machines mostly require manual fixation of the workpiece during processing. This requires manpower to resist the rotational force generated during drilling, which is labor-intensive and cannot guarantee processing accuracy. Fixing the workpiece with a fixed fixture cannot be adjusted according to the position of the hole, resulting in poor applicability. Utility Model Content

[0003] The purpose of this utility model is to provide a fixture for CNC lathes for drilling center holes, in order to solve the problems mentioned in the background art, that existing small drilling machines mostly require manual fixation of the workpiece during processing, which requires manpower to counteract the rotational force generated during drilling, resulting in high labor intensity and inability to guarantee processing accuracy. Furthermore, the fixed fixtures used to fix the workpiece cannot be adjusted according to the position of the hole, resulting in poor applicability.

[0004] To achieve the above objectives, this utility model is implemented through the following technical solution: a CNC lathe fixture for drilling center holes, comprising: a fixed base, on which a multi-directional adjustable clamping structure for drilling machines is installed;

[0005] The multi-directional adjustable clamping structure of the drilling machine includes: a clamping bracket, an adjusting threaded rod, an adjusting clamping plate, a mounting rod, a combined connecting rod, a first fixed frame, a second fixed frame, and an adjusting locking assembly;

[0006] The clamping bracket is mounted on the fixed base. The adjusting threaded rod is mounted on the clamping bracket through a threaded engagement. The adjusting clamping plate is movably mounted on the clamping bracket. The adjusting threaded rod is movably connected to the adjusting clamping plate. The mounting rod is mounted on the fixed base. The combined connecting rod is mounted on the mounting rod. The first fixed frame is movably mounted on the combined connecting rod. The first fixed frame and the second fixed frame are assembled together. The adjusting locking assembly is mounted on the first fixed frame and the second fixed frame.

[0007] Preferably, the mounting base is equipped with a mounting groove.

[0008] Preferably, the clamping bracket is equipped with a locking pin.

[0009] Preferably, the mounting rod is mounted on the fixing seat by a bolt body. The bottom end of the bolt body has a circular groove, and the bottom end of the circular groove is fitted with a bolt rod. A fixing ring is installed on the upper outer end of the bolt rod. An annular pressure plate, a spring, and an annular rubber sheet are fitted on the circumferential surface of the bolt rod. An extrusion block is installed at the upper edge of the annular rubber sheet.

[0010] Preferably, the first fixing frame and the second fixing frame are installed together by hinges.

[0011] Preferably, the adjusting locking assembly includes: a combination slot, an insert slot, a clamping locking block, a pair of mounting blocks, and an adjusting locking rod;

[0012] A combination slot is formed on the first fixed frame, an insert groove is formed laterally on the first fixed frame, a clamping lock block is installed in the insert groove, a pair of mounting blocks are installed on the first fixed frame and the second fixed frame, and an adjusting locking rod is installed on the pair of mounting blocks.

[0013] Preferably, a movable lever is installed on the adjusting locking rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the fixture for drilling center holes on a CNC lathe has a reasonable structural design;

[0015] This solution utilizes a multi-directional adjustable clamping structure for drilling machines. The workpiece is clamped and fixed using this multi-directional adjustable clamping structure. During use, the workpiece can be fixed and the machine position adjusted to any desired location. This allows for omnidirectional adjustment based on the required drilling position, ensuring processing efficiency. It solves the problems of existing small drilling machines, which often require manual fixation of the workpiece, necessitating manual resistance to the rotational force generated during drilling, resulting in high workload and compromised processing accuracy. Furthermore, fixed fixtures cannot be adjusted according to the hole position, leading to poor applicability. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the clamping mechanism of a machine tool according to the present invention.

[0017] Figure 2 This is a front-view perspective three-dimensional structural diagram of the first fixing frame of the clamping mechanism of the machine tool described in this utility model.

[0018] Figure 3 This is a rear-view perspective three-dimensional structural diagram of the first fixing frame of the clamping mechanism of the machine tool described in this utility model.

[0019] Figure 4 This is a three-dimensional structural diagram of the clamping locking block of the clamping mechanism of the machine tool described in this utility model.

[0020] Figure 5This is a schematic diagram of the main structure of the clamping locking block of the clamping mechanism of the machine tool described in this utility model.

[0021] Figure 6 This is a schematic diagram of the bolt body of the clamping mechanism of the machine tool described in this utility model.

[0022] In the diagram: 1-Fixed base; 2-Clamping bracket; 3-Adjusting threaded rod; 4-Adjusting clamping plate; 5-Mounting rod; 6-Combination connecting rod; 7-First fixed frame; 8-Second fixed frame; 9-Mounting groove; 10-Locking pin; 11-Fixing bolt; 12-Hinge; 13-Combination slot; 14-Embedding groove; 15-Clamping locking block; 16-Mounting block; 17-Adjusting locking rod; 18-Modible lever. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-6 This utility model provides a technical solution:

[0025] In this technical solution, a fixture for drilling center holes on a CNC lathe is provided. This solution takes into account that existing drilling machines require manual fixation of the workpiece during processing, which can lead to large force and positional movement, affecting processing accuracy. Furthermore, the heat generated during drilling can easily burn workers, affecting processing efficiency and quality. Based on the above, the following technical means are set up in this solution.

[0026] Specifically, this device includes at least a fixed base 1, a clamping bracket 2, an adjusting threaded rod 3, an adjusting clamping plate 4, a mounting rod 5, a combined connecting rod 6, a first fixed frame 7, a second fixed frame 8, and an adjusting locking assembly;

[0027] The adjusting locking assembly includes: a combination slot 13, an insert slot 14, a clamping locking block 15, a pair of mounting blocks 16, and an adjusting locking rod 17;

[0028] Place the fixed base 1 on the machining platform of the drilling machine, and then assemble and mount the first fixed frame 7 and the second fixed frame 8 onto the columnar frame of the drilling machine using hinges 12. Initial installation is then performed using a pair of mounting blocks 16 in conjunction with the adjusting locking rod 17. Insert the combined connecting rod 6, mounted on the mounting rod 5, into the combined slot 13 on the first fixed frame 7. During machining, place the workpiece on the clamping bracket 2, and rotate the adjusting threaded rod 3 to drive the adjusting clamping plate 4 to clamp and fix the workpiece. Adjust the position of the fixed base 1 and the rotation angle of the first fixed frame 7 and the second fixed frame 8 according to the position where the workpiece needs to be drilled. The length of the combined connecting rod 6 inserted into the combined slot 13 is adjusted so that the drilling point is located below the drill bit. After the position is adjusted, the adjusting locking rod 17 is rotated. The movable lever 18 causes the adjusting locking rod 17 to rotate and cooperate with the mounting block 16 to clamp and fix the first fixed frame 7 and the second fixed frame 8 on the drilling machine. When the first fixed frame 7 and the second fixed frame 8 are clamped, the clamping locking block 15 is squeezed and will be pushed outward in the embedding groove 14. The arc-shaped structure of the outer wall of the clamping locking block 15 abuts against the combined connecting rod 6 and locks it in the combined slot 13, thereby realizing the locking and fixing of the equipment and achieving the purpose of clamping the drilling machine.

[0029] More specifically, the clamping bracket 2 is installed on the fixed base 1, the adjusting threaded rod 3 is installed on the clamping bracket 2 through threaded engagement, the adjusting clamping plate 4 is movably installed on the clamping bracket 2, the adjusting threaded rod 3 is movably connected to the adjusting clamping plate 4, the mounting rod 5 is installed on the fixed base 1, the combined connecting rod 6 is installed on the mounting rod 5, the first fixed frame 7 is movably installed on the combined connecting rod 6, the first fixed frame 7 and the second fixed frame 8 are assembled together, and the adjusting locking assembly is installed on the first fixed frame 7 and the second fixed frame 8;

[0030] The combination slot 13 is opened on the first fixed frame 7, the mounting groove 14 is opened horizontally on the first fixed frame 7, the clamping lock block 15 is installed in the mounting groove 14, a pair of mounting blocks 16 are installed on the first fixed frame 7 and the second fixed frame 8, and the adjusting locking rod 17 is installed on the pair of mounting blocks 16.

[0031] In the specific implementation process, furthermore, the mounting base 1 is equipped with a mounting groove 9.

[0032] In the specific implementation process, a locking pin 10 is further installed on the clamping bracket 2.

[0033] In the specific implementation process, the mounting rod 5 is further installed on the fixing seat 1 by the bolt body 11. The bottom end of the bolt body 11 is provided with a circular groove 111. The bottom end of the circular groove 111 is equipped with a bolt rod 113. The upper outer end of the bolt rod 113 is equipped with a fixing ring 116. The circumferential surface of the bolt rod 113 is fitted with an annular pressure plate 115, a spring 117 and an annular rubber sheet 112. The upper edge of the annular rubber sheet 112 is equipped with a compression block 114.

[0034] In the specific implementation process, the first fixing frame 7 and the second fixing frame 8 are further installed together by hinge 12.

[0035] In the specific implementation process, a movable lever 18 is further installed on the adjusting locking lever 17.

[0036] 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.

[0037] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A fixture for a center-boring numerical control lathe, comprising: The utility model discloses a fixed seat (1), its characterized in that, the fixed seat (1) is installed with the drilling machine multidirectional adjusting type clamping structure, The drilling machine multidirectional adjusting type clamping structure includes a clamping support (2), an adjusting threaded rod (3), an adjusting clamping plate (4), a mounting rod (5), a combined connecting rod (6), a first fixed frame (7), a second fixed frame (8) and an adjusting locking assembly, The clamping support (2) is installed on the fixed seat (1), the adjusting threaded rod (3) is installed on the clamping support (2) through threaded cooperation, the adjusting clamping plate (4) is movably installed on the clamping support (2), the adjusting threaded rod (3) is movably connected with the adjusting clamping plate (4), the mounting rod (5) is installed on the fixed seat (1), the combined connecting rod (6) is installed on the mounting rod (5), the first fixed frame (7) is movably installed on the combined connecting rod (6), the first fixed frame (7) and the second fixed frame (8) are combinedly installed together, and the adjusting locking assembly is installed on the first fixed frame (7) and the second fixed frame (8).

2. The center drilling CNC lathe fixture according to claim 1, characterized in that, The fixed seat (1) is provided with a mounting groove (9).

3. The center boring numerical control lathe fixture according to claim 1, wherein, The clamping support (2) is provided with a locking pin (10).

4. The center boring numerical control lathe fixture according to claim 1, wherein, The mounting rod (5) is installed on the fixed seat (1) through a bolt body (11), the bottom end of the bolt body (11) is provided with a circular groove (111), the bottom end of the circular groove (111) is provided with a bolt rod (113), the outer upper end of the bolt rod (113) is provided with a fixed ring (116), the circumferential surface of the bolt rod (113) is sleeved with an annular pressing sheet (115), a spring (117) and an annular rubber sheet (112), and the upper end edge of the annular rubber sheet (112) is provided with an extrusion block (114).

5. The center boring numerical control lathe fixture according to claim 1, wherein, The first fixed frame (7) and the second fixed frame (8) are installed together through a hinge (12).

6. The center boring numerical control lathe fixture according to claim 1, wherein, The adjusting locking assembly includes a combined insertion slot (13), an embedded groove (14), a clamping lock block (15), a pair of mounting blocks (16) and an adjusting locking rod (17); The combined insertion slot (13) is arranged on the first fixed frame (7), the embedded groove (14) is horizontally arranged on the first fixed frame (7), the clamping lock block (15) is installed in the embedded groove (14), the pair of mounting blocks (16) are installed on the first fixed frame (7) and the second fixed frame (8), and the adjusting locking rod (17) is installed on the pair of mounting blocks (16).

7. The center boring numerical control lathe fixture according to claim 6, wherein, The adjusting locking rod (17) is provided with a movable lever (18).