A machining apparatus using a general-purpose small round workpiece clamp
By using a lifting mechanism and piston plate design in CNC machining equipment, the problem of cooling water splashing was solved, achieving precise cooling of the inner wall of the workpiece and safe machining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- KUNSHAN DIANFU PRECISION COMPONENTS CO LTD
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-07
AI Technical Summary
In current CNC machining, cooling water sprayed onto the workpiece surface is prone to splashing, affecting machining accuracy and safety, and may also cause interference to equipment and operators.
Design a fixture that includes a base, a conical pressure block, and a lifting mechanism. A motor drives a threaded screw to move a lifting rod and a piston plate, enabling precise spraying and sealing of cooling water on the inner wall of the workpiece to prevent splashing.
It enables concentrated spraying of cooling water onto the inner wall of the workpiece, preventing splashing, improving machining accuracy and safety, and avoiding interference with the surrounding environment.
Smart Images

Figure CN224464203U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fixture technology, specifically a processing equipment that uses a general-purpose small round part fixture. Background Technology
[0002] CNC machining is an advanced manufacturing process that uses pre-programmed digital instructions to control machine tools for high-precision cutting and manufacturing. It utilizes milling, turning, or drilling to process materials such as metals and plastics into complex geometries.
[0003] In the prior art, the authorized announcement number CN222660871U discloses a CNC round part quick clamping fixture, including a base, a movable block, a pressure plate and a screw. The base has multiple parallel sliding grooves, and a movable block is slidably connected in each sliding groove. The upper end of the movable block has a lower clamping groove, and the base has an upper clamping groove corresponding to the upper part of the movable block. The upper clamping groove and the lower clamping groove are used to clamp the workpiece to be processed.
[0004] The aforementioned fixtures can be used to position round parts, facilitating machine tool processing. However, during processing, due to factors such as mechanical friction and energy conversion, the workpiece heats up rapidly. This rapid temperature increase not only affects the machining accuracy but may also lead to changes in material properties. To effectively reduce the workpiece temperature, cooling water spraying is commonly used. This method involves directly spraying cooling water onto the workpiece surface, utilizing the principle of heat absorption through evaporation to remove heat and achieve cooling. However, in practice, the cooling water sprayed onto the workpiece often splashes everywhere due to factors such as pressure and spray angle, potentially affecting surrounding equipment and operators, and interfering with the smooth progress of the processing. Utility Model Content
[0005] The purpose of this invention is to provide a processing device that uses a universal small round part fixture to solve the problems in the prior art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a processing device using a general-purpose small round part fixture, comprising a base, a conical groove on the base, a conical pressure block above the base, a connecting nut fixedly installed on the conical pressure block, a workpiece body disposed between the conical pressure block and the conical groove, a lifting mechanism installed on the base, the lifting mechanism comprising a motor fixedly installed at the bottom of the base and a positioning sleeve fixedly installed at the bottom of the conical groove, a threaded screw fixedly installed at the output end of the motor, a screw nut threadedly installed on the screw, a lifting rod fixedly installed on the screw nut, and a cooling mechanism installed at the upper end of the lifting rod.
[0007] Preferably, limit protrusions are fixedly installed on both sides of the lifting rod, and a bearing seat is fixedly installed inside the base.
[0008] Preferably, a bearing is installed in the bearing housing, and the threaded screw is rotatably installed in the bearing housing through the bearing. A hydraulic cylinder is provided above the conical pressure block, and the conical pressure block is connected to the output end of the hydraulic cylinder through a connecting nut.
[0009] Preferably, the lifting rod is slidably installed in the base via a positioning sleeve, the threaded screw is rotatably installed in the base via a bearing seat, and a coupling is fixedly installed at the output end of the motor, with the threaded screw fixedly installed at the output end of the motor via the coupling.
[0010] Preferably, the cooling mechanism includes a lifting seat fixedly installed on the upper end of the lifting rod, a nozzle fixedly installed around the lifting seat, a water pipe connected to the nozzle, a threaded groove on the lifting seat, a threaded seat threadedly installed in the threaded groove, a piston plate fixedly installed on the threaded seat, and a sealing ring fitted on the piston plate.
[0011] Preferably, the piston plate has an installation groove on its edge, and the sealing ring is installed on the piston plate through the installation groove.
[0012] Preferably, the threaded seat is connected to the lifting seat via a threaded groove, the piston plate is connected to the lifting seat via a threaded seat, and the lifting seat is movably installed in the workpiece body via a lifting rod.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. In this application, after the workpiece body is fixed between the base and the conical pressure block, the motor can be started. The start of the motor will drive the threaded screw to rotate, thereby causing the screw nut to move in the vertical direction. As the screw nut rises, the lifting rod also moves upward, ultimately causing the piston plate to move upward, thereby achieving the closure of the upper port of the workpiece body.
[0015] 2. In this application, after the upper end of the workpiece body is sealed, cooling water can be introduced into the nozzle through a water supply pipe. This cooling water is then sprayed onto the inner wall of the workpiece body to achieve a cooling effect. Because the cooling water is continuously sprayed onto the inner wall of the round part, splashing of the cooling water can be effectively avoided. After the processing is completed, the piston plate can be controlled to retract. During the retraction process, the piston plate will scrape off water droplets on the inner wall, thereby preventing cooling water from remaining inside the workpiece body. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2This is a partial structural schematic diagram of the present invention;
[0018] Figure 3 This is a schematic diagram of the lifting mechanism of this utility model;
[0019] Figure 4 This is a schematic diagram of the cooling mechanism of this utility model.
[0020] The markings in the diagram are: 1. Base; 2. Conical groove; 3. Conical pressure block; 4. Connecting nut; 5. Workpiece body; 6. Lifting mechanism; 601. Motor; 602. Bearing seat; 603. Lifting rod; 604. Positioning sleeve; 605. Limiting protrusion; 606. Screw nut; 607. Threaded screw; 7. Cooling mechanism; 701. Piston plate; 702. Sealing ring; 703. Threaded seat; 704. Threaded groove; 705. Lifting seat; 706. Nozzle; 707. Water pipe. Detailed Implementation
[0021] 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.
[0022] like Figure 1 and Figure 2 As shown, this utility model provides a technical solution for a processing equipment using a general-purpose small round part fixture, including a base 1, a conical groove 2 on the base 1, a conical pressure block 3 above the base 1, a connecting nut 4 fixedly installed on the conical pressure block 3, a workpiece body 5 between the conical pressure block 3 and the conical groove 2, a lifting mechanism 6 installed on the base 1, and a cooling mechanism 7 installed at the upper end of the lifting rod 603. Through the cooperation of the lifting mechanism 6 and the cooling mechanism 7, cooling water can be prevented from splashing everywhere while cooling is being achieved.
[0023] like Figure 2 and Figure 3 As shown, the lifting mechanism 6 includes a motor 601 fixedly installed at the bottom of the base 1 and a positioning sleeve 604 fixedly installed at the bottom of the conical groove 2. A threaded screw 607 is fixedly installed at the output end of the motor 601. A screw nut 606 is threaded onto the screw nut 606. A lifting rod 603 is fixedly installed on the screw nut 606. Limiting protrusions 605 are fixedly installed on both sides of the lifting rod 603. A bearing seat 602 is fixedly installed inside the base 1. A bearing is installed inside the bearing seat 602, and the threaded screw 607 is rotatably installed in the bearing seat 602 through the bearing. A hydraulic cylinder is provided above the conical pressure block 3, and the conical pressure block 3 is connected to the output end of the hydraulic cylinder through a connecting nut 4.
[0024] Specifically, after precise positioning and installation, the workpiece body 5 is securely fixed at a specific position between the base 1 and the conical pressure block 3. After this step is completed, the operator can start the motor 601. Once started, the motor 601 will drive the connected threaded screw 607 to rotate. During rotation, the threaded screw 607 will drive the mating screw nut 606 to move upwards. The upward movement of the screw nut 606 will drive the lifting rod 603 to move upwards synchronously. The upward movement of the lifting rod 603 will drive the piston plate 701 to move upwards. This upward movement of the piston plate 701 will block the upper port of the workpiece body 5.
[0025] like Figure 2 and Figure 4 As shown, the cooling mechanism 7 includes a lifting seat 705 fixedly installed on the upper end of the lifting rod 603. Spray nozzles 706 are fixedly installed around the lifting seat 705. Water pipes 707 are connected to the spray nozzles 706. A threaded groove 704 is opened on the lifting seat 705. A threaded seat 703 is installed in the threaded groove 704. A piston plate 701 is fixedly installed on the threaded seat 703. A sealing ring 702 is sleeved on the piston plate 701. An installation groove is opened on the edge of the piston plate 701. The sealing ring 702 is installed on the piston plate 701 through the installation groove.
[0026] Specifically, after the upper end of the workpiece body 5 is effectively blocked, cooling water can be delivered to the nozzle 706 through the water supply pipe 707. Once the cooling water is delivered to the nozzle 706, it will be sprayed onto the inner wall surface of the workpiece body 5. This design ensures that the cooling water can directly and effectively contact the inner wall of the workpiece body 5, thereby achieving a rapid cooling effect on the workpiece body 5. Furthermore, the spraying of the cooling water is always precisely concentrated on the inner wall area of the workpiece body 5, effectively preventing the cooling water from splashing everywhere and avoiding unnecessary interference and damage to the surrounding environment and equipment. During the retraction of the piston plate 701, its edge will make close contact with the inner wall of the workpiece body 5, thereby scraping off the water droplets adhering to the inner wall.
[0027] Working Principle: During use, the workpiece body 5 is first placed in the conical groove 2. Then, the conical pressure block 3 is driven downwards by a hydraulic cylinder, thus fixing the workpiece body 5 between the base 1 and the conical pressure block 3. After the workpiece body 5 is fixed between the base 1 and the conical pressure block 3, the motor 601 can be started. Starting the motor 601 will drive the threaded screw 607 to rotate. The rotation of the threaded screw 607 will then drive the screw nut 606 to move upwards. The upward movement of the screw nut 606 will then drive the lifting rod 603 to move upwards. The upward movement of the lifting rod 603 will then drive the piston plate 701 to move upwards, thereby blocking the upper end of the workpiece body 5. After the upper end of the workpiece body 5 is blocked, cooling water can be supplied to the nozzle 706 through the water supply pipe 707. The cooling water supplied to the nozzle 706 will eventually be sprayed onto the inner wall of the workpiece body 5, thereby cooling the workpiece body 5. The cooling water is always sprayed onto the inner wall of the workpiece body 5, preventing it from splashing everywhere. Furthermore, after processing is completed, the piston plate 701 can be retracted. When the piston plate 701 is retracted, it will scrape off the water droplets on the inner wall of the workpiece body 5, preventing cooling water from remaining in the workpiece body 5.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A processing device using a general-purpose small round part fixture, comprising a base (1), wherein a conical groove (2) is provided on the base (1), a conical pressure block (3) is provided above the base (1), and a connecting nut (4) is fixedly installed on the conical pressure block (3), characterized in that: The workpiece body (5) is set between the conical pressure block (3) and the conical groove (2). A lifting mechanism (6) is installed on the base (1). The lifting mechanism (6) includes a motor (601) fixedly installed at the bottom of the base (1) and a positioning sleeve (604) fixedly installed at the bottom of the conical groove (2). A threaded screw (607) is fixedly installed at the output end of the motor (601). A screw nut (606) is threaded on the screw (607). A lifting rod (603) is fixedly installed on the screw nut (606). A cooling mechanism (7) is installed at the upper end of the lifting rod (603).
2. The processing equipment using a general-purpose small round part fixture according to claim 1, characterized in that: Limiting protrusions (605) are fixedly installed on both sides of the lifting rod (603), and a bearing seat (602) is fixedly installed inside the base (1).
3. The processing equipment using a general-purpose small round part fixture according to claim 2, characterized in that: The bearing housing (602) is equipped with a bearing, and the threaded screw (607) is rotatably installed in the bearing housing (602) through the bearing. The conical pressure block (3) is equipped with an oil cylinder above it, and the conical pressure block (3) is connected to the output end of the oil cylinder through a connecting nut (4).
4. The processing equipment using a general-purpose small round part fixture according to claim 3, characterized in that: The lifting rod (603) is slidably installed in the base (1) through the positioning sleeve (604), the threaded screw (607) is rotatably installed in the base (1) through the bearing seat (602), and a coupling is fixedly installed at the output end of the motor (601). The threaded screw (607) is fixedly installed at the output end of the motor (601) through the coupling.
5. A processing device using a general-purpose small round part fixture according to claim 4, characterized in that: The cooling mechanism (7) includes a lifting seat (705) fixedly installed on the upper end of the lifting rod (603). Spray nozzles (706) are fixedly installed around the lifting seat (705). A water supply pipe (707) is connected to the spray nozzles (706). A threaded groove (704) is opened on the lifting seat (705). A threaded seat (703) is threadedly installed in the threaded groove (704). A piston plate (701) is fixedly installed on the threaded seat (703). A sealing ring (702) is fitted on the piston plate (701).
6. A processing device using a general-purpose small round part fixture according to claim 5, characterized in that: The piston plate (701) has an installation groove on its edge, and the sealing ring (702) is installed on the piston plate (701) through the installation groove.
7. A processing device using a general-purpose small round part fixture according to claim 6, characterized in that: The threaded seat (703) is connected to the lifting seat (705) through the threaded groove (704), the piston plate (701) is connected to the lifting seat (705) through the threaded seat (703), and the lifting seat (705) is movably installed in the workpiece body (5) through the lifting rod (603).